+++ /dev/null
-Lua License
------------
-
-Lua is licensed under the terms of the MIT license reproduced below.
-This means that Lua is free software and can be used for both academic
-and commercial purposes at absolutely no cost.
-
-For details and rationale, see http://www.lua.org/license.html .
-
-===============================================================================
-
-Copyright (C) 2003-2004 Tecgraf, PUC-Rio.
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-
-===============================================================================
-
-(end of COPYRIGHT)
+++ /dev/null
-This is Lua 5.0.
-
-* Changes from version 4.0 to 5.0
- -------------------------------
- Language:
- + lexical scoping.
- + Lua coroutines.
- + standard libraries now packaged in tables.
- + tags replaced by metatables and tag methods replaced by metamethods,
- stored in metatables.
- + proper tail calls.
- + each function can have its own global table, which can be shared.
- + new __newindex metamethod, called when we insert a new key into a table.
- + new block comments: --[[ ... ]].
- + new generic for.
- + new weak tables.
- + new boolean type.
- + new syntax "local function".
- + (f()) returns the first value returned by f.
- + {f()} fills a table with all values returned by f.
- + \n ignored in [[\n .
- + fixed and-or priorities.
- + more general syntax for function definition (e.g. function a.x.y:f()...end).
- + more general syntax for function calls (e.g. (print or write)(9)).
- + new functions (time/date, tmpfile, unpack, require, load*, etc.).
- API:
- + chunks are loaded by using lua_load; new luaL_loadfile and luaL_loadbuffer.
- + introduced lightweight userdata, a simple "void*" without a metatable.
- + new error handling protocol: the core no longer prints error messages;
- all errors are reported to the caller on the stack.
- + new lua_atpanic for host cleanup.
- + new, signal-safe, hook scheme.
- Implementation:
- + new license: MIT.
- + new, faster, register-based virtual machine.
- + support for external multithreading and coroutines.
- + new and consistent error message format.
- + the core no longer needs "stdio.h" for anything (except for a single
- use of sprintf to convert numbers to strings).
- + lua.c now runs the environment variable LUA_INIT, if present. It can
- be "@filename", to run a file, or the chunk itself.
- + support for user extensions in lua.c.
- sample implementation given for command line editing.
- + new dynamic loading library, active by default on several platforms.
- + safe garbage-collector metamethods.
- + precompiled bytecodes checked for integrity (secure binary dostring).
- + strings are fully aligned.
- + position capture in string.find.
- + read('*l') can read lines with embedded zeros.
-
-* Changes from version 3.2 to 4.0
- -------------------------------
- Language:
- + new "break" and "for" statements (both numerical and for tables).
- + uniform treatment of globals: globals are now stored in a Lua table.
- + improved error messages.
- + no more '$debug': full speed *and* full debug information.
- + new read form: read(N) for next N bytes.
- + general read patterns now deprecated.
- (still available with -DCOMPAT_READPATTERNS.)
- + all return values are passed as arguments for the last function
- (old semantics still available with -DLUA_COMPAT_ARGRET)
- + garbage collection tag methods for tables now deprecated.
- + there is now only one tag method for order.
- API:
- + New API: fully re-entrant, simpler, and more efficient.
- + New debug API.
- Implementation:
- + faster than ever: cleaner virtual machine and new hashing algorithm.
- + non-recursive garbage-collector algorithm.
- + reduced memory usage for programs with many strings.
- + improved treatment for memory allocation errors.
- + improved support for 16-bit machines (we hope).
- + code now compiles unmodified as both ANSI C and C++.
- + numbers in bases other than 10 are converted using strtoul.
- + new -f option in Lua to support #! scripts.
- + luac can now combine text and binaries.
-
-* Changes from version 3.1 to 3.2
- -------------------------------
- + redirected all output in Lua's core to _ERRORMESSAGE and _ALERT.
- + increased limit on the number of constants and globals per function
- (from 2^16 to 2^24).
- + debugging info (lua_debug and hooks) moved into lua_state and new API
- functions provided to get and set this info.
- + new debug lib gives full debugging access within Lua.
- + new table functions "foreachi", "sort", "tinsert", "tremove", "getn".
- + new io functions "flush", "seek".
-
-* Changes from version 3.0 to 3.1
- -------------------------------
- + NEW FEATURE: anonymous functions with closures (via "upvalues").
- + new syntax:
- - local variables in chunks.
- - better scope control with DO block END.
- - constructors can now be also written: { record-part; list-part }.
- - more general syntax for function calls and lvalues, e.g.:
- f(x).y=1
- o:f(x,y):g(z)
- f"string" is sugar for f("string")
- + strings may now contain arbitrary binary data (e.g., embedded zeros).
- + major code re-organization and clean-up; reduced module interdependecies.
- + no arbitrary limits on the total number of constants and globals.
- + support for multiple global contexts.
- + better syntax error messages.
- + new traversal functions "foreach" and "foreachvar".
- + the default for numbers is now double.
- changing it to use floats or longs is easy.
- + complete debug information stored in pre-compiled chunks.
- + sample interpreter now prompts user when run interactively, and also
- handles control-C interruptions gracefully.
-
-* Changes from version 2.5 to 3.0
- -------------------------------
- + NEW CONCEPT: "tag methods".
- Tag methods replace fallbacks as the meta-mechanism for extending the
- semantics of Lua. Whereas fallbacks had a global nature, tag methods
- work on objects having the same tag (e.g., groups of tables).
- Existing code that uses fallbacks should work without change.
- + new, general syntax for constructors {[exp] = exp, ... }.
- + support for handling variable number of arguments in functions (varargs).
- + support for conditional compilation ($if ... $else ... $end).
- + cleaner semantics in API simplifies host code.
- + better support for writing libraries (auxlib.h).
- + better type checking and error messages in the standard library.
- + luac can now also undump.
-
-* Changes from version 2.4 to 2.5
- -------------------------------
- + io and string libraries are now based on pattern matching;
- the old libraries are still available for compatibility
- + dofile and dostring can now return values (via return statement)
- + better support for 16- and 64-bit machines
- + expanded documentation, with more examples
-
-* Changes from version 2.2 to 2.4
- -------------------------------
- + external compiler creates portable binary files that can be loaded faster
- + interface for debugging and profiling
- + new "getglobal" fallback
- + new functions for handling references to Lua objects
- + new functions in standard lib
- + only one copy of each string is stored
- + expanded documentation, with more examples
-
-* Changes from version 2.1 to 2.2
- -------------------------------
- + functions now may be declared with any "lvalue" as a name
- + garbage collection of functions
- + support for pipes
-
-* Changes from version 1.1 to 2.1
- -------------------------------
- + object-oriented support
- + fallbacks
- + simplified syntax for tables
- + many internal improvements
-
-(end of HISTORY)
+++ /dev/null
-noinst_LTLIBRARIES = liblua.la
-noinst_PROGRAMS = lua/lua luac/luac
-
-EXTRA_DIST = \
- COPYRIGHT \
- HISTORY \
- local/modemuncher.c \
- local/userconfig.c \
- local/linit.lua
-
-LDADD = liblua.la
-AM_CPPFLAGS = -I. -I$(srcdir) -I$(top_builddir)
-AM_CPPFLAGS += -I$(srcdir)/include -I$(srcdir)/local
-
-lua_lua_SOURCES = lua/lua.c
-lua_lua_CPPFLAGS = $(AM_CPPFLAGS) -DLUA_USERCONFIG='"$(srcdir)/local/userconfig.c"'
-lua_lua_CPPFLAGS += -DRPMCONFIGDIR="\"$(RPMCONFIGDIR)\""
-lua_lua_LDADD = $(LDADD)
-luac_luac_SOURCES = luac/luac.c luac/print.c lopcodes.c
-luac_luac_CPPFLAGS = $(AM_CPPFLAGS) -DLUA_OPNAMES
-
-liblua_la_CPPFLAGS = $(AM_CPPFLAGS) -DUSE_DLOPEN -DWITH_POSIX
-liblua_la_LIBADD = -lm -ldl
-liblua_la_SOURCES = \
- local/linit.h \
- local/linit.c \
- local/linit.lch \
- local/lposix.h \
- local/lposix.c \
- local/lrexlib.h \
- local/lrexlib.c \
- include/lauxlib.h \
- include/lua.h \
- include/lualib.h \
- lib/lauxlib.c \
- lib/lbaselib.c \
- lib/ldblib.c \
- lib/liolib.c \
- lib/lmathlib.c \
- lib/loadlib.c \
- lib/lstrlib.c \
- lib/ltablib.c \
- lapi.c \
- lapi.h \
- lcode.c \
- lcode.h \
- ldebug.c \
- ldebug.h \
- ldo.c \
- ldo.h \
- ldump.c \
- lfunc.c \
- lfunc.h \
- lgc.c \
- lgc.h \
- llex.c \
- llex.h \
- llimits.h \
- lmem.c \
- lmem.h \
- lobject.c \
- lobject.h \
- lopcodes.c \
- lopcodes.h \
- lparser.c \
- lparser.h \
- lstate.c \
- lstate.h \
- lstring.c \
- lstring.h \
- ltable.c \
- ltable.h \
- ltests.c \
- ltm.c \
- ltm.h \
- lundump.c \
- lundump.h \
- lvm.c \
- lvm.h \
- lzio.c \
- lzio.h
-
-local/linit.lch: local/linit.lua
- bin2c local/linit.lua > local/linit.lch
+++ /dev/null
-This is Lua 5.0.
-See HISTORY for a summary of changes since the last released version.
-
-* What is Lua?
- ------------
- Lua is a powerful, light-weight programming language designed for extending
- applications. Lua is also frequently used as a general-purpose, stand-alone
- language. Lua is free software.
-
- For complete information, visit Lua's web site at http://www.lua.org/ .
- For an executive summary, see http://www.lua.org/about.html .
-
- Lua has been used in many different projects around the world.
- For a short list, see http://www.lua.org/uses.html .
-
-* Availability
- ------------
- Lua is freely available for both academic and commercial purposes.
- See COPYRIGHT and http://www.lua.org/license.html for details.
- Lua can be downloaded from its official site http://www.lua.org/ and
- several other sites aroung the world. For a complete list of mirror sites,
- see http://www.lua.org/mirrors.html .
-
-* Installation
- ------------
- Lua is implemented in pure ANSI C, and compiles unmodified in all known
- platforms that have an ANSI C compiler. Under Unix, simply typing "make"
- should work. See INSTALL for detailed instructions.
-
-* Contacting the authors
- ----------------------
- Send your comments, questions, and bug reports to lua@tecgraf.puc-rio.br.
- For more information about the authors, see http://www.lua.org/authors.html .
- For reporting bugs, try also the mailing list: lua-l@tecgraf.puc-rio.br.
- For more information about this list, including instructions on how to
- subscribe and access the archives, see http://www.lua.org/lua-l.html .
-
-* Origin
- ------
- Lua is developed at Tecgraf, the Computer Graphics Technology Group
- of PUC-Rio (the Pontifical Catholic University of Rio de Janeiro in Brazil).
- Tecgraf is a laboratory of the Department of Computer Science.
-
-(end of README)
+++ /dev/null
-/*
-** $Id: lauxlib.h,v 1.3 2004/03/23 05:09:14 jbj Exp $
-** Auxiliary functions for building Lua libraries
-** See Copyright Notice in lua.h
-*/
-
-
-#ifndef lauxlib_h
-#define lauxlib_h
-
-
-#include <stddef.h>
-#include <stdio.h>
-
-#include "lua.h"
-
-
-#ifndef LUALIB_API
-#define LUALIB_API LUA_API
-#endif
-
-
-
-typedef struct luaL_reg {
- const char *name;
- lua_CFunction func;
-} luaL_reg;
-
-
-LUALIB_API void luaL_openlib (lua_State *L, const char *libname,
- const luaL_reg *l, int nup);
-LUALIB_API int luaL_getmetafield (lua_State *L, int obj, const char *e);
-LUALIB_API int luaL_callmeta (lua_State *L, int obj, const char *e);
-LUALIB_API int luaL_typerror (lua_State *L, int narg, const char *tname);
-LUALIB_API int luaL_argerror (lua_State *L, int numarg, const char *extramsg);
-LUALIB_API const char *luaL_checklstring (lua_State *L, int numArg, size_t *l);
-LUALIB_API const char *luaL_optlstring (lua_State *L, int numArg,
- const char *def, size_t *l);
-LUALIB_API lua_Number luaL_checknumber (lua_State *L, int numArg);
-LUALIB_API lua_Number luaL_optnumber (lua_State *L, int nArg, lua_Number def);
-
-LUALIB_API void luaL_checkstack (lua_State *L, int sz, const char *msg);
-LUALIB_API void luaL_checktype (lua_State *L, int narg, int t);
-LUALIB_API void luaL_checkany (lua_State *L, int narg);
-
-LUALIB_API int luaL_newmetatable (lua_State *L, const char *tname);
-LUALIB_API void luaL_getmetatable (lua_State *L, const char *tname);
-LUALIB_API void *luaL_checkudata (lua_State *L, int ud, const char *tname);
-
-LUALIB_API void luaL_where (lua_State *L, int lvl);
-LUALIB_API int luaL_error (lua_State *L, const char *fmt, ...);
-
-LUALIB_API int luaL_findstring (const char *st, const char *const lst[]);
-
-LUALIB_API int luaL_ref (lua_State *L, int t);
-LUALIB_API void luaL_unref (lua_State *L, int t, int ref);
-
-LUALIB_API int luaL_getn (lua_State *L, int t);
-LUALIB_API void luaL_setn (lua_State *L, int t, int n);
-
-LUALIB_API int luaL_loadfile (lua_State *L, const char *filename);
-LUALIB_API int luaL_loadbuffer (lua_State *L, const char *buff, size_t sz,
- const char *name);
-
-
-
-/*
-** ===============================================================
-** some useful macros
-** ===============================================================
-*/
-
-#define luaL_argcheck(L, cond,numarg,extramsg) if (!(cond)) \
- luaL_argerror(L, numarg,extramsg)
-#define luaL_checkstring(L,n) (luaL_checklstring(L, (n), NULL))
-#define luaL_optstring(L,n,d) (luaL_optlstring(L, (n), (d), NULL))
-#define luaL_checkint(L,n) ((int)luaL_checknumber(L, n))
-#define luaL_checklong(L,n) ((long)luaL_checknumber(L, n))
-#define luaL_optint(L,n,d) ((int)luaL_optnumber(L, n,(lua_Number)(d)))
-#define luaL_optlong(L,n,d) ((long)luaL_optnumber(L, n,(lua_Number)(d)))
-
-
-/*
-** {======================================================
-** Generic Buffer manipulation
-** =======================================================
-*/
-
-
-#ifndef LUAL_BUFFERSIZE
-#define LUAL_BUFFERSIZE BUFSIZ
-#endif
-
-
-typedef struct luaL_Buffer {
- char *p; /* current position in buffer */
- int lvl; /* number of strings in the stack (level) */
- lua_State *L;
- char buffer[LUAL_BUFFERSIZE];
-} luaL_Buffer;
-
-#define luaL_putchar(B,c) \
- ((void)((B)->p < ((B)->buffer+LUAL_BUFFERSIZE) || luaL_prepbuffer(B)), \
- (*(B)->p++ = (char)(c)))
-
-#define luaL_addsize(B,n) ((B)->p += (n))
-
-LUALIB_API void luaL_buffinit (lua_State *L, luaL_Buffer *B);
-LUALIB_API char *luaL_prepbuffer (luaL_Buffer *B);
-LUALIB_API void luaL_addlstring (luaL_Buffer *B, const char *s, size_t l);
-LUALIB_API void luaL_addstring (luaL_Buffer *B, const char *s);
-LUALIB_API void luaL_addvalue (luaL_Buffer *B);
-LUALIB_API void luaL_pushresult (luaL_Buffer *B);
-
-
-/* }====================================================== */
-
-
-
-/*
-** Compatibility macros and functions
-*/
-
-LUALIB_API int lua_dofile (lua_State *L, const char *filename);
-LUALIB_API int lua_dostring (lua_State *L, const char *str);
-LUALIB_API int lua_dobuffer (lua_State *L, const char *buff, size_t sz,
- const char *n);
-
-
-#define luaL_check_lstr luaL_checklstring
-#define luaL_opt_lstr luaL_optlstring
-#define luaL_check_number luaL_checknumber
-#define luaL_opt_number luaL_optnumber
-#define luaL_arg_check luaL_argcheck
-#define luaL_check_string luaL_checkstring
-#define luaL_opt_string luaL_optstring
-#define luaL_check_int luaL_checkint
-#define luaL_check_long luaL_checklong
-#define luaL_opt_int luaL_optint
-#define luaL_opt_long luaL_optlong
-
-
-#endif
-
-
+++ /dev/null
-/*
-** $Id: lua.h,v 1.3 2004/03/23 02:27:55 jbj Exp $
-** Lua - An Extensible Extension Language
-** Tecgraf: Computer Graphics Technology Group, PUC-Rio, Brazil
-** http://www.lua.org mailto:info@lua.org
-** See Copyright Notice at the end of this file
-*/
-
-
-#ifndef lua_h
-#define lua_h
-
-#include <stdarg.h>
-#include <stddef.h>
-
-
-#define LUA_VERSION "Lua 5.0.2"
-#define LUA_COPYRIGHT "Copyright (C) 1994-2004 Tecgraf, PUC-Rio"
-#define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo & W. Celes"
-
-
-
-/* option for multiple returns in `lua_pcall' and `lua_call' */
-#define LUA_MULTRET (-1)
-
-
-/*
-** pseudo-indices
-*/
-#define LUA_REGISTRYINDEX (-10000)
-#define LUA_GLOBALSINDEX (-10001)
-#define lua_upvalueindex(i) (LUA_GLOBALSINDEX-(i))
-
-
-/* error codes for `lua_load' and `lua_pcall' */
-#define LUA_ERRRUN 1
-#define LUA_ERRFILE 2
-#define LUA_ERRSYNTAX 3
-#define LUA_ERRMEM 4
-#define LUA_ERRERR 5
-
-
-typedef struct lua_State lua_State;
-
-typedef int (*lua_CFunction) (lua_State *L);
-
-
-/*
-** functions that read/write blocks when loading/dumping Lua chunks
-*/
-typedef const char * (*lua_Chunkreader) (lua_State *L, void *ud, size_t *sz);
-
-typedef int (*lua_Chunkwriter) (lua_State *L, const void* p,
- size_t sz, void* ud);
-
-
-/*
-** basic types
-*/
-#define LUA_TNONE (-1)
-
-#define LUA_TNIL 0
-#define LUA_TBOOLEAN 1
-#define LUA_TLIGHTUSERDATA 2
-#define LUA_TNUMBER 3
-#define LUA_TSTRING 4
-#define LUA_TTABLE 5
-#define LUA_TFUNCTION 6
-#define LUA_TUSERDATA 7
-#define LUA_TTHREAD 8
-
-
-/* minimum Lua stack available to a C function */
-#define LUA_MINSTACK 20
-
-
-/*
-** generic extra include file
-*/
-#ifdef LUA_USER_H
-#include LUA_USER_H
-#endif
-
-
-/* type of numbers in Lua */
-#ifndef LUA_NUMBER
-typedef double lua_Number;
-#else
-typedef LUA_NUMBER lua_Number;
-#endif
-
-
-/* mark for all API functions */
-#ifndef LUA_API
-#define LUA_API extern
-#endif
-
-
-/*
-** state manipulation
-*/
-LUA_API lua_State *lua_open (void);
-LUA_API void lua_close (lua_State *L);
-LUA_API lua_State *lua_newthread (lua_State *L);
-
-LUA_API lua_CFunction lua_atpanic (lua_State *L, lua_CFunction panicf);
-
-
-/*
-** basic stack manipulation
-*/
-LUA_API int lua_gettop (lua_State *L);
-LUA_API void lua_settop (lua_State *L, int idx);
-LUA_API void lua_pushvalue (lua_State *L, int idx);
-LUA_API void lua_remove (lua_State *L, int idx);
-LUA_API void lua_insert (lua_State *L, int idx);
-LUA_API void lua_replace (lua_State *L, int idx);
-LUA_API int lua_checkstack (lua_State *L, int sz);
-
-LUA_API void lua_xmove (lua_State *from, lua_State *to, int n);
-
-
-/*
-** access functions (stack -> C)
-*/
-
-LUA_API int lua_isnumber (lua_State *L, int idx);
-LUA_API int lua_isstring (lua_State *L, int idx);
-LUA_API int lua_iscfunction (lua_State *L, int idx);
-LUA_API int lua_isuserdata (lua_State *L, int idx);
-LUA_API int lua_type (lua_State *L, int idx);
-LUA_API const char *lua_typename (lua_State *L, int tp);
-
-LUA_API int lua_equal (lua_State *L, int idx1, int idx2);
-LUA_API int lua_rawequal (lua_State *L, int idx1, int idx2);
-LUA_API int lua_lessthan (lua_State *L, int idx1, int idx2);
-
-LUA_API lua_Number lua_tonumber (lua_State *L, int idx);
-LUA_API int lua_toboolean (lua_State *L, int idx);
-LUA_API const char *lua_tostring (lua_State *L, int idx);
-LUA_API size_t lua_strlen (lua_State *L, int idx);
-LUA_API lua_CFunction lua_tocfunction (lua_State *L, int idx);
-LUA_API void *lua_touserdata (lua_State *L, int idx);
-LUA_API lua_State *lua_tothread (lua_State *L, int idx);
-LUA_API const void *lua_topointer (lua_State *L, int idx);
-
-
-/*
-** push functions (C -> stack)
-*/
-LUA_API void lua_pushnil (lua_State *L);
-LUA_API void lua_pushnumber (lua_State *L, lua_Number n);
-LUA_API void lua_pushlstring (lua_State *L, const char *s, size_t l);
-LUA_API void lua_pushstring (lua_State *L, const char *s);
-LUA_API const char *lua_pushvfstring (lua_State *L, const char *fmt,
- va_list argp);
-LUA_API const char *lua_pushfstring (lua_State *L, const char *fmt, ...);
-LUA_API void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n);
-LUA_API void lua_pushboolean (lua_State *L, int b);
-LUA_API void lua_pushlightuserdata (lua_State *L, void *p);
-
-
-/*
-** get functions (Lua -> stack)
-*/
-LUA_API void lua_gettable (lua_State *L, int idx);
-LUA_API void lua_rawget (lua_State *L, int idx);
-LUA_API void lua_rawgeti (lua_State *L, int idx, int n);
-LUA_API void lua_newtable (lua_State *L);
-LUA_API void *lua_newuserdata (lua_State *L, size_t sz);
-LUA_API int lua_getmetatable (lua_State *L, int objindex);
-LUA_API void lua_getfenv (lua_State *L, int idx);
-
-
-/*
-** set functions (stack -> Lua)
-*/
-LUA_API void lua_settable (lua_State *L, int idx);
-LUA_API void lua_rawset (lua_State *L, int idx);
-LUA_API void lua_rawseti (lua_State *L, int idx, int n);
-LUA_API int lua_setmetatable (lua_State *L, int objindex);
-LUA_API int lua_setfenv (lua_State *L, int idx);
-
-
-/*
-** `load' and `call' functions (load and run Lua code)
-*/
-LUA_API void lua_call (lua_State *L, int nargs, int nresults);
-LUA_API int lua_pcall (lua_State *L, int nargs, int nresults, int errfunc);
-LUA_API int lua_cpcall (lua_State *L, lua_CFunction func, void *ud);
-LUA_API int lua_load (lua_State *L, lua_Chunkreader reader, void *dt,
- const char *chunkname);
-
-LUA_API int lua_dump (lua_State *L, lua_Chunkwriter writer, void *data);
-
-
-/*
-** coroutine functions
-*/
-LUA_API int lua_yield (lua_State *L, int nresults);
-LUA_API int lua_resume (lua_State *L, int narg);
-
-/*
-** garbage-collection functions
-*/
-LUA_API int lua_getgcthreshold (lua_State *L);
-LUA_API int lua_getgccount (lua_State *L);
-LUA_API void lua_setgcthreshold (lua_State *L, int newthreshold);
-
-/*
-** miscellaneous functions
-*/
-
-LUA_API const char *lua_version (void);
-
-LUA_API int lua_error (lua_State *L);
-
-LUA_API int lua_next (lua_State *L, int idx);
-
-LUA_API void lua_concat (lua_State *L, int n);
-
-
-
-/*
-** ===============================================================
-** some useful macros
-** ===============================================================
-*/
-
-#define lua_boxpointer(L,u) \
- (*(void **)(lua_newuserdata(L, sizeof(void *))) = (u))
-
-#define lua_unboxpointer(L,i) (*(void **)(lua_touserdata(L, i)))
-
-#define lua_pop(L,n) lua_settop(L, -(n)-1)
-
-#define lua_register(L,n,f) \
- (lua_pushstring(L, n), \
- lua_pushcfunction(L, f), \
- lua_settable(L, LUA_GLOBALSINDEX))
-
-#define lua_pushcfunction(L,f) lua_pushcclosure(L, f, 0)
-
-#define lua_isfunction(L,n) (lua_type(L,n) == LUA_TFUNCTION)
-#define lua_istable(L,n) (lua_type(L,n) == LUA_TTABLE)
-#define lua_islightuserdata(L,n) (lua_type(L,n) == LUA_TLIGHTUSERDATA)
-#define lua_isnil(L,n) (lua_type(L,n) == LUA_TNIL)
-#define lua_isboolean(L,n) (lua_type(L,n) == LUA_TBOOLEAN)
-#define lua_isnone(L,n) (lua_type(L,n) == LUA_TNONE)
-#define lua_isnoneornil(L, n) (lua_type(L,n) <= 0)
-
-#define lua_pushliteral(L, s) \
- lua_pushlstring(L, "" s, (sizeof(s)/sizeof(char))-1)
-
-
-
-/*
-** compatibility macros and functions
-*/
-
-
-LUA_API int lua_pushupvalues (lua_State *L);
-
-#define lua_getregistry(L) lua_pushvalue(L, LUA_REGISTRYINDEX)
-#define lua_setglobal(L,s) \
- (lua_pushstring(L, s), lua_insert(L, -2), lua_settable(L, LUA_GLOBALSINDEX))
-
-#define lua_getglobal(L,s) \
- (lua_pushstring(L, s), lua_gettable(L, LUA_GLOBALSINDEX))
-
-
-/* compatibility with ref system */
-
-/* pre-defined references */
-#define LUA_NOREF (-2)
-#define LUA_REFNIL (-1)
-
-#define lua_ref(L,lock) ((lock) ? luaL_ref(L, LUA_REGISTRYINDEX) : \
- (lua_pushstring(L, "unlocked references are obsolete"), lua_error(L), 0))
-
-#define lua_unref(L,ref) luaL_unref(L, LUA_REGISTRYINDEX, (ref))
-
-#define lua_getref(L,ref) lua_rawgeti(L, LUA_REGISTRYINDEX, ref)
-
-
-
-/*
-** {======================================================================
-** useful definitions for Lua kernel and libraries
-** =======================================================================
-*/
-
-/* formats for Lua numbers */
-#ifndef LUA_NUMBER_SCAN
-#define LUA_NUMBER_SCAN "%lf"
-#endif
-
-#ifndef LUA_NUMBER_FMT
-#define LUA_NUMBER_FMT "%.14g"
-#endif
-
-/* }====================================================================== */
-
-
-/*
-** {======================================================================
-** Debug API
-** =======================================================================
-*/
-
-
-/*
-** Event codes
-*/
-#define LUA_HOOKCALL 0
-#define LUA_HOOKRET 1
-#define LUA_HOOKLINE 2
-#define LUA_HOOKCOUNT 3
-#define LUA_HOOKTAILRET 4
-
-
-/*
-** Event masks
-*/
-#define LUA_MASKCALL (1 << LUA_HOOKCALL)
-#define LUA_MASKRET (1 << LUA_HOOKRET)
-#define LUA_MASKLINE (1 << LUA_HOOKLINE)
-#define LUA_MASKCOUNT (1 << LUA_HOOKCOUNT)
-
-typedef struct lua_Debug lua_Debug; /* activation record */
-
-typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar);
-
-
-LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar);
-LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar);
-LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n);
-LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n);
-LUA_API const char *lua_getupvalue (lua_State *L, int funcindex, int n);
-LUA_API const char *lua_setupvalue (lua_State *L, int funcindex, int n);
-
-LUA_API int lua_sethook (lua_State *L, lua_Hook func, int mask, int count);
-LUA_API lua_Hook lua_gethook (lua_State *L);
-LUA_API int lua_gethookmask (lua_State *L);
-LUA_API int lua_gethookcount (lua_State *L);
-
-
-#define LUA_IDSIZE 60
-
-struct lua_Debug {
- int event;
- const char *name; /* (n) */
- const char *namewhat; /* (n) `global', `local', `field', `method' */
- const char *what; /* (S) `Lua', `C', `main', `tail' */
- const char *source; /* (S) */
- int currentline; /* (l) */
- int nups; /* (u) number of upvalues */
- int linedefined; /* (S) */
- char short_src[LUA_IDSIZE]; /* (S) */
- /* private part */
- int i_ci; /* active function */
-};
-
-/* }====================================================================== */
-
-
-/******************************************************************************
-* Copyright (C) 1994-2004 Tecgraf, PUC-Rio. All rights reserved.
-*
-* Permission is hereby granted, free of charge, to any person obtaining
-* a copy of this software and associated documentation files (the
-* "Software"), to deal in the Software without restriction, including
-* without limitation the rights to use, copy, modify, merge, publish,
-* distribute, sublicense, and/or sell copies of the Software, and to
-* permit persons to whom the Software is furnished to do so, subject to
-* the following conditions:
-*
-* The above copyright notice and this permission notice shall be
-* included in all copies or substantial portions of the Software.
-*
-* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-******************************************************************************/
-
-
-#endif
+++ /dev/null
-/*
-** $Id: lualib.h,v 1.3 2004/03/23 05:09:14 jbj Exp $
-** Lua standard libraries
-** See Copyright Notice in lua.h
-*/
-
-
-#ifndef lualib_h
-#define lualib_h
-
-#include "lua.h"
-
-
-#ifndef LUALIB_API
-#define LUALIB_API LUA_API
-#endif
-
-
-#define LUA_COLIBNAME "coroutine"
-LUALIB_API int luaopen_base (lua_State *L);
-
-#define LUA_TABLIBNAME "table"
-LUALIB_API int luaopen_table (lua_State *L);
-
-#define LUA_IOLIBNAME "io"
-#define LUA_OSLIBNAME "os"
-LUALIB_API int luaopen_io (lua_State *L);
-
-#define LUA_STRLIBNAME "string"
-LUALIB_API int luaopen_string (lua_State *L);
-
-#define LUA_MATHLIBNAME "math"
-LUALIB_API int luaopen_math (lua_State *L);
-
-#define LUA_DBLIBNAME "debug"
-LUALIB_API int luaopen_debug (lua_State *L);
-
-
-LUALIB_API int luaopen_loadlib (lua_State *L);
-
-
-/* to help testing the libraries */
-#ifndef lua_assert
-#define lua_assert(c) /* empty */
-#endif
-
-
-/* compatibility code */
-#define lua_baselibopen luaopen_base
-#define lua_tablibopen luaopen_table
-#define lua_iolibopen luaopen_io
-#define lua_strlibopen luaopen_string
-#define lua_mathlibopen luaopen_math
-#define lua_dblibopen luaopen_debug
-
-#endif
+++ /dev/null
-/*
-** $Id: lapi.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Lua API
-** See Copyright Notice in lua.h
-*/
-
-
-#include <assert.h>
-#include <string.h>
-
-#define lapi_c
-
-#include "lua.h"
-
-#include "lapi.h"
-#include "ldebug.h"
-#include "ldo.h"
-#include "lfunc.h"
-#include "lgc.h"
-#include "lmem.h"
-#include "lobject.h"
-#include "lstate.h"
-#include "lstring.h"
-#include "ltable.h"
-#include "ltm.h"
-#include "lundump.h"
-#include "lvm.h"
-
-
-const char lua_ident[] =
- "$Lua: " LUA_VERSION " " LUA_COPYRIGHT " $\n"
- "$Authors: " LUA_AUTHORS " $\n"
- "$URL: www.lua.org $\n";
-
-
-
-#ifndef api_check
-#define api_check(L, o) /*{ assert(o); }*/
-#endif
-
-#define api_checknelems(L, n) api_check(L, (n) <= (L->top - L->base))
-
-#define api_incr_top(L) {api_check(L, L->top < L->ci->top); L->top++;}
-
-
-
-
-static TObject *negindex (lua_State *L, int idx)
-{
- if (idx > LUA_REGISTRYINDEX) {
- api_check(L, idx != 0 && -idx <= L->top - L->base);
- return L->top+idx;
- }
- else switch (idx) { /* pseudo-indices */
- case LUA_REGISTRYINDEX: return registry(L);
- case LUA_GLOBALSINDEX: return gt(L);
- default: {
- TObject *func = (L->base - 1);
- idx = LUA_GLOBALSINDEX - idx;
- lua_assert(iscfunction(func));
- return (idx <= clvalue(func)->c.nupvalues)
- ? &clvalue(func)->c.upvalue[idx-1]
- : NULL;
- }
- }
-}
-
-
-static TObject *luaA_index (lua_State *L, int idx)
-{
- if (idx > 0) {
- api_check(L, idx <= L->top - L->base);
- return L->base + idx - 1;
- }
- else {
- TObject *o = negindex(L, idx);
- api_check(L, o != NULL);
- return o;
- }
-}
-
-
-static TObject *luaA_indexAcceptable (lua_State *L, int idx)
-{
- if (idx > 0) {
- TObject *o = L->base+(idx-1);
- api_check(L, idx <= L->stack_last - L->base);
- if (o >= L->top) return NULL;
- else return o;
- }
- else
- return negindex(L, idx);
-}
-
-
-void luaA_pushobject (lua_State *L, const TObject *o) {
- setobj2s(L->top, o);
- incr_top(L);
-}
-
-
-LUA_API int lua_checkstack (lua_State *L, int size) {
- int res;
- lua_lock(L);
- if ((L->top - L->base + size) > LUA_MAXCSTACK)
- res = 0; /* stack overflow */
- else {
- luaD_checkstack(L, size);
- if (L->ci->top < L->top + size)
- L->ci->top = L->top + size;
- res = 1;
- }
- lua_unlock(L);
- return res;
-}
-
-
-LUA_API void lua_xmove (lua_State *from, lua_State *to, int n) {
- int i;
- lua_lock(to);
- api_checknelems(from, n);
- from->top -= n;
- for (i = 0; i < n; i++) {
- setobj2s(to->top, from->top + i);
- api_incr_top(to);
- }
- lua_unlock(to);
-}
-
-
-LUA_API lua_CFunction lua_atpanic (lua_State *L, lua_CFunction panicf) {
- lua_CFunction old;
- lua_lock(L);
- old = G(L)->panic;
- G(L)->panic = panicf;
- lua_unlock(L);
- return old;
-}
-
-
-LUA_API lua_State *lua_newthread (lua_State *L) {
- lua_State *L1;
- lua_lock(L);
- luaC_checkGC(L);
- L1 = luaE_newthread(L);
- setthvalue(L->top, L1);
- api_incr_top(L);
- lua_unlock(L);
- lua_userstateopen(L1);
- return L1;
-}
-
-
-
-/*
-** basic stack manipulation
-*/
-
-
-LUA_API int lua_gettop (lua_State *L) {
- return (L->top - L->base);
-}
-
-
-LUA_API void lua_settop (lua_State *L, int idx) {
- lua_lock(L);
- if (idx >= 0) {
- api_check(L, idx <= L->stack_last - L->base);
- while (L->top < L->base + idx)
- setnilvalue(L->top++);
- L->top = L->base + idx;
- }
- else {
- api_check(L, -(idx+1) <= (L->top - L->base));
- L->top += idx+1; /* `subtract' index (index is negative) */
- }
- lua_unlock(L);
-}
-
-
-LUA_API void lua_remove (lua_State *L, int idx) {
- StkId p;
- lua_lock(L);
- p = luaA_index(L, idx);
- while (++p < L->top) setobjs2s(p-1, p);
- L->top--;
- lua_unlock(L);
-}
-
-
-LUA_API void lua_insert (lua_State *L, int idx) {
- StkId p;
- StkId q;
- lua_lock(L);
- p = luaA_index(L, idx);
- for (q = L->top; q>p; q--) setobjs2s(q, q-1);
- setobjs2s(p, L->top);
- lua_unlock(L);
-}
-
-
-LUA_API void lua_replace (lua_State *L, int idx) {
- lua_lock(L);
- api_checknelems(L, 1);
- setobj(luaA_index(L, idx), L->top - 1); /* write barrier */
- L->top--;
- lua_unlock(L);
-}
-
-
-LUA_API void lua_pushvalue (lua_State *L, int idx) {
- lua_lock(L);
- setobj2s(L->top, luaA_index(L, idx));
- api_incr_top(L);
- lua_unlock(L);
-}
-
-
-
-/*
-** access functions (stack -> C)
-*/
-
-
-LUA_API int lua_type (lua_State *L, int idx) {
- StkId o = luaA_indexAcceptable(L, idx);
- return (o == NULL) ? LUA_TNONE : ttype(o);
-}
-
-
-LUA_API const char *lua_typename (lua_State *L, int t) {
- UNUSED(L);
- return (t == LUA_TNONE) ? "no value" : luaT_typenames[t];
-}
-
-
-LUA_API int lua_iscfunction (lua_State *L, int idx) {
- StkId o = luaA_indexAcceptable(L, idx);
- return (o == NULL) ? 0 : iscfunction(o);
-}
-
-
-LUA_API int lua_isnumber (lua_State *L, int idx) {
- TObject n;
- const TObject *o = luaA_indexAcceptable(L, idx);
- return (o != NULL && tonumber(o, &n));
-}
-
-
-LUA_API int lua_isstring (lua_State *L, int idx) {
- int t = lua_type(L, idx);
- return (t == LUA_TSTRING || t == LUA_TNUMBER);
-}
-
-
-LUA_API int lua_isuserdata (lua_State *L, int idx) {
- const TObject *o = luaA_indexAcceptable(L, idx);
- return (o != NULL && (ttisuserdata(o) || ttislightuserdata(o)));
-}
-
-
-LUA_API int lua_rawequal (lua_State *L, int index1, int index2) {
- StkId o1 = luaA_indexAcceptable(L, index1);
- StkId o2 = luaA_indexAcceptable(L, index2);
- return (o1 == NULL || o2 == NULL) ? 0 /* index out of range */
- : luaO_rawequalObj(o1, o2);
-}
-
-
-LUA_API int lua_equal (lua_State *L, int index1, int index2) {
- StkId o1, o2;
- int i;
- lua_lock(L); /* may call tag method */
- o1 = luaA_indexAcceptable(L, index1);
- o2 = luaA_indexAcceptable(L, index2);
- i = (o1 == NULL || o2 == NULL) ? 0 /* index out of range */
- : equalobj(L, o1, o2);
- lua_unlock(L);
- return i;
-}
-
-
-LUA_API int lua_lessthan (lua_State *L, int index1, int index2) {
- StkId o1, o2;
- int i;
- lua_lock(L); /* may call tag method */
- o1 = luaA_indexAcceptable(L, index1);
- o2 = luaA_indexAcceptable(L, index2);
- i = (o1 == NULL || o2 == NULL) ? 0 /* index out-of-range */
- : luaV_lessthan(L, o1, o2);
- lua_unlock(L);
- return i;
-}
-
-
-
-LUA_API lua_Number lua_tonumber (lua_State *L, int idx) {
- TObject n;
- const TObject *o = luaA_indexAcceptable(L, idx);
- if (o != NULL && tonumber(o, &n))
- return nvalue(o);
- else
- return 0;
-}
-
-
-LUA_API int lua_toboolean (lua_State *L, int idx) {
- const TObject *o = luaA_indexAcceptable(L, idx);
- return (o != NULL) && !l_isfalse(o);
-}
-
-
-LUA_API const char *lua_tostring (lua_State *L, int idx) {
- StkId o = luaA_indexAcceptable(L, idx);
- if (o == NULL)
- return NULL;
- else if (ttisstring(o))
- return svalue(o);
- else {
- const char *s;
- lua_lock(L); /* `luaV_tostring' may create a new string */
- s = (luaV_tostring(L, o) ? svalue(o) : NULL);
- luaC_checkGC(L);
- lua_unlock(L);
- return s;
- }
-}
-
-
-LUA_API size_t lua_strlen (lua_State *L, int idx) {
- StkId o = luaA_indexAcceptable(L, idx);
- if (o == NULL)
- return 0;
- else if (ttisstring(o))
- return tsvalue(o)->tsv.len;
- else {
- size_t l;
- lua_lock(L); /* `luaV_tostring' may create a new string */
- l = (luaV_tostring(L, o) ? tsvalue(o)->tsv.len : 0);
- lua_unlock(L);
- return l;
- }
-}
-
-
-LUA_API lua_CFunction lua_tocfunction (lua_State *L, int idx) {
- StkId o = luaA_indexAcceptable(L, idx);
- return (o == NULL || !iscfunction(o)) ? NULL : clvalue(o)->c.f;
-}
-
-
-LUA_API void *lua_touserdata (lua_State *L, int idx) {
- StkId o = luaA_indexAcceptable(L, idx);
- if (o == NULL) return NULL;
- switch (ttype(o)) {
- case LUA_TUSERDATA: return (uvalue(o) + 1);
- case LUA_TLIGHTUSERDATA: return pvalue(o);
- default: return NULL;
- }
-}
-
-
-LUA_API lua_State *lua_tothread (lua_State *L, int idx) {
- StkId o = luaA_indexAcceptable(L, idx);
- return (o == NULL || !ttisthread(o)) ? NULL : thvalue(o);
-}
-
-
-LUA_API const void *lua_topointer (lua_State *L, int idx) {
- StkId o = luaA_indexAcceptable(L, idx);
- if (o == NULL) return NULL;
- else {
- switch (ttype(o)) {
- case LUA_TTABLE: return hvalue(o);
- case LUA_TFUNCTION: return clvalue(o);
- case LUA_TTHREAD: return thvalue(o);
- case LUA_TUSERDATA:
- case LUA_TLIGHTUSERDATA:
- return lua_touserdata(L, idx);
- default: return NULL;
- }
- }
-}
-
-
-
-/*
-** push functions (C -> stack)
-*/
-
-
-LUA_API void lua_pushnil (lua_State *L) {
- lua_lock(L);
- setnilvalue(L->top);
- api_incr_top(L);
- lua_unlock(L);
-}
-
-
-LUA_API void lua_pushnumber (lua_State *L, lua_Number n) {
- lua_lock(L);
- setnvalue(L->top, n);
- api_incr_top(L);
- lua_unlock(L);
-}
-
-
-LUA_API void lua_pushlstring (lua_State *L, const char *s, size_t len) {
- lua_lock(L);
- luaC_checkGC(L);
- setsvalue2s(L->top, luaS_newlstr(L, s, len));
- api_incr_top(L);
- lua_unlock(L);
-}
-
-
-LUA_API void lua_pushstring (lua_State *L, const char *s) {
- if (s == NULL)
- lua_pushnil(L);
- else
- lua_pushlstring(L, s, strlen(s));
-}
-
-
-LUA_API const char *lua_pushvfstring (lua_State *L, const char *fmt,
- va_list argp) {
- const char *ret;
- lua_lock(L);
- luaC_checkGC(L);
- ret = luaO_pushvfstring(L, fmt, argp);
- lua_unlock(L);
- return ret;
-}
-
-
-LUA_API const char *lua_pushfstring (lua_State *L, const char *fmt, ...) {
- const char *ret;
- va_list argp;
- lua_lock(L);
- luaC_checkGC(L);
- va_start(argp, fmt);
- ret = luaO_pushvfstring(L, fmt, argp);
- va_end(argp);
- lua_unlock(L);
- return ret;
-}
-
-
-LUA_API void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n) {
- Closure *cl;
- lua_lock(L);
- luaC_checkGC(L);
- api_checknelems(L, n);
- cl = luaF_newCclosure(L, n);
- cl->c.f = fn;
- L->top -= n;
- while (n--)
- setobj2n(&cl->c.upvalue[n], L->top+n);
- setclvalue(L->top, cl);
- api_incr_top(L);
- lua_unlock(L);
-}
-
-
-LUA_API void lua_pushboolean (lua_State *L, int b) {
- lua_lock(L);
- setbvalue(L->top, (b != 0)); /* ensure that true is 1 */
- api_incr_top(L);
- lua_unlock(L);
-}
-
-
-LUA_API void lua_pushlightuserdata (lua_State *L, void *p) {
- lua_lock(L);
- setpvalue(L->top, p);
- api_incr_top(L);
- lua_unlock(L);
-}
-
-
-
-/*
-** get functions (Lua -> stack)
-*/
-
-
-LUA_API void lua_gettable (lua_State *L, int idx) {
- StkId t;
- lua_lock(L);
- t = luaA_index(L, idx);
- setobj2s(L->top - 1, luaV_gettable(L, t, L->top - 1, 0));
- lua_unlock(L);
-}
-
-
-LUA_API void lua_rawget (lua_State *L, int idx) {
- StkId t;
- lua_lock(L);
- t = luaA_index(L, idx);
- api_check(L, ttistable(t));
- setobj2s(L->top - 1, luaH_get(hvalue(t), L->top - 1));
- lua_unlock(L);
-}
-
-
-LUA_API void lua_rawgeti (lua_State *L, int idx, int n) {
- StkId o;
- lua_lock(L);
- o = luaA_index(L, idx);
- api_check(L, ttistable(o));
- setobj2s(L->top, luaH_getnum(hvalue(o), n));
- api_incr_top(L);
- lua_unlock(L);
-}
-
-
-LUA_API void lua_newtable (lua_State *L) {
- lua_lock(L);
- luaC_checkGC(L);
- sethvalue(L->top, luaH_new(L, 0, 0));
- api_incr_top(L);
- lua_unlock(L);
-}
-
-
-LUA_API int lua_getmetatable (lua_State *L, int objindex) {
- const TObject *obj;
- Table *mt = NULL;
- int res;
- lua_lock(L);
- obj = luaA_indexAcceptable(L, objindex);
- if (obj != NULL) {
- switch (ttype(obj)) {
- case LUA_TTABLE:
- mt = hvalue(obj)->metatable;
- break;
- case LUA_TUSERDATA:
- mt = uvalue(obj)->uv.metatable;
- break;
- }
- }
- if (mt == NULL || mt == hvalue(defaultmeta(L)))
- res = 0;
- else {
- sethvalue(L->top, mt);
- api_incr_top(L);
- res = 1;
- }
- lua_unlock(L);
- return res;
-}
-
-
-LUA_API void lua_getfenv (lua_State *L, int idx) {
- StkId o;
- lua_lock(L);
- o = luaA_index(L, idx);
- setobj2s(L->top, isLfunction(o) ? &clvalue(o)->l.g : gt(L));
- api_incr_top(L);
- lua_unlock(L);
-}
-
-
-/*
-** set functions (stack -> Lua)
-*/
-
-
-LUA_API void lua_settable (lua_State *L, int idx) {
- StkId t;
- lua_lock(L);
- api_checknelems(L, 2);
- t = luaA_index(L, idx);
- luaV_settable(L, t, L->top - 2, L->top - 1);
- L->top -= 2; /* pop index and value */
- lua_unlock(L);
-}
-
-
-LUA_API void lua_rawset (lua_State *L, int idx) {
- StkId t;
- lua_lock(L);
- api_checknelems(L, 2);
- t = luaA_index(L, idx);
- api_check(L, ttistable(t));
- setobj2t(luaH_set(L, hvalue(t), L->top-2), L->top-1); /* write barrier */
- L->top -= 2;
- lua_unlock(L);
-}
-
-
-LUA_API void lua_rawseti (lua_State *L, int idx, int n) {
- StkId o;
- lua_lock(L);
- api_checknelems(L, 1);
- o = luaA_index(L, idx);
- api_check(L, ttistable(o));
- setobj2t(luaH_setnum(L, hvalue(o), n), L->top-1); /* write barrier */
- L->top--;
- lua_unlock(L);
-}
-
-
-LUA_API int lua_setmetatable (lua_State *L, int objindex) {
- TObject *obj, *mt;
- int res = 1;
- lua_lock(L);
- api_checknelems(L, 1);
- obj = luaA_index(L, objindex);
- mt = (!ttisnil(L->top - 1)) ? L->top - 1 : defaultmeta(L);
- api_check(L, ttistable(mt));
- switch (ttype(obj)) {
- case LUA_TTABLE: {
- hvalue(obj)->metatable = hvalue(mt); /* write barrier */
- break;
- }
- case LUA_TUSERDATA: {
- uvalue(obj)->uv.metatable = hvalue(mt); /* write barrier */
- break;
- }
- default: {
- res = 0; /* cannot set */
- break;
- }
- }
- L->top--;
- lua_unlock(L);
- return res;
-}
-
-
-LUA_API int lua_setfenv (lua_State *L, int idx) {
- StkId o;
- int res = 0;
- lua_lock(L);
- api_checknelems(L, 1);
- o = luaA_index(L, idx);
- L->top--;
- api_check(L, ttistable(L->top));
- if (isLfunction(o)) {
- res = 1;
- clvalue(o)->l.g = *(L->top);
- }
- lua_unlock(L);
- return res;
-}
-
-
-/*
-** `load' and `call' functions (run Lua code)
-*/
-
-LUA_API void lua_call (lua_State *L, int nargs, int nresults) {
- StkId func;
- lua_lock(L);
- api_checknelems(L, nargs+1);
- func = L->top - (nargs+1);
- luaD_call(L, func, nresults);
- lua_unlock(L);
-}
-
-
-
-/*
-** Execute a protected call.
-*/
-struct CallS { /* data to `f_call' */
- StkId func;
- int nresults;
-};
-
-
-static void f_call (lua_State *L, void *ud)
-{
- struct CallS *c = cast(struct CallS *, ud);
- luaD_call(L, c->func, c->nresults);
-}
-
-
-
-LUA_API int lua_pcall (lua_State *L, int nargs, int nresults, int errfunc) {
- struct CallS c;
- int status;
- ptrdiff_t func;
- lua_lock(L);
- func = (errfunc == 0) ? 0 : savestack(L, luaA_index(L, errfunc));
- c.func = L->top - (nargs+1); /* function to be called */
- c.nresults = nresults;
- status = luaD_pcall(L, f_call, &c, savestack(L, c.func), func);
- lua_unlock(L);
- return status;
-}
-
-
-/*
-** Execute a protected C call.
-*/
-struct CCallS { /* data to `f_Ccall' */
- lua_CFunction func;
- void *ud;
-};
-
-
-static void f_Ccall (lua_State *L, void *ud)
-{
- struct CCallS *c = cast(struct CCallS *, ud);
- Closure *cl;
- cl = luaF_newCclosure(L, 0);
- cl->c.f = c->func;
- setclvalue(L->top, cl); /* push function */
- incr_top(L);
- setpvalue(L->top, c->ud); /* push only argument */
- incr_top(L);
- luaD_call(L, L->top - 2, 0);
-}
-
-
-LUA_API int lua_cpcall (lua_State *L, lua_CFunction func, void *ud) {
- struct CCallS c;
- int status;
- lua_lock(L);
- c.func = func;
- c.ud = ud;
- status = luaD_pcall(L, f_Ccall, &c, savestack(L, L->top), 0);
- lua_unlock(L);
- return status;
-}
-
-
-LUA_API int lua_load (lua_State *L, lua_Chunkreader reader, void *data,
- const char *chunkname) {
- ZIO z;
- int status;
- int c;
- lua_lock(L);
- if (!chunkname) chunkname = "?";
- luaZ_init(&z, reader, data, chunkname);
- c = luaZ_lookahead(&z);
- status = luaD_protectedparser(L, &z, (c == LUA_SIGNATURE[0]));
- lua_unlock(L);
- return status;
-}
-
-
-LUA_API int lua_dump (lua_State *L, lua_Chunkwriter writer, void *data) {
- int status;
- TObject *o;
- lua_lock(L);
- api_checknelems(L, 1);
- o = L->top - 1;
- if (isLfunction(o) && clvalue(o)->l.nupvalues == 0) {
- luaU_dump(L, clvalue(o)->l.p, writer, data);
- status = 1;
- }
- else
- status = 0;
- lua_unlock(L);
- return status;
-}
-
-
-/*
-** Garbage-collection functions
-*/
-
-/* GC values are expressed in Kbytes: #bytes/2^10 */
-#define GCscalel(x) ((x)>>10)
-#define GCscale(x) (cast(int, GCscalel(x)))
-#define GCunscale(x) (cast(lu_mem, x)<<10)
-
-LUA_API int lua_getgcthreshold (lua_State *L) {
- int threshold;
- lua_lock(L);
- threshold = GCscale(G(L)->GCthreshold);
- lua_unlock(L);
- return threshold;
-}
-
-LUA_API int lua_getgccount (lua_State *L) {
- int count;
- lua_lock(L);
- count = GCscale(G(L)->nblocks);
- lua_unlock(L);
- return count;
-}
-
-LUA_API void lua_setgcthreshold (lua_State *L, int newthreshold) {
- lua_lock(L);
- if (cast(lu_mem, newthreshold) > GCscalel(MAX_LUMEM))
- G(L)->GCthreshold = MAX_LUMEM;
- else
- G(L)->GCthreshold = GCunscale(newthreshold);
- luaC_checkGC(L);
- lua_unlock(L);
-}
-
-
-/*
-** miscellaneous functions
-*/
-
-
-LUA_API const char *lua_version (void) {
- return LUA_VERSION;
-}
-
-
-LUA_API int lua_error (lua_State *L) {
- lua_lock(L);
- api_checknelems(L, 1);
- luaG_errormsg(L);
- lua_unlock(L);
- return 0; /* to avoid warnings */
-}
-
-
-LUA_API int lua_next (lua_State *L, int idx) {
- StkId t;
- int more;
- lua_lock(L);
- t = luaA_index(L, idx);
- api_check(L, ttistable(t));
- more = luaH_next(L, hvalue(t), L->top - 1);
- if (more) {
- api_incr_top(L);
- }
- else /* no more elements */
- L->top -= 1; /* remove key */
- lua_unlock(L);
- return more;
-}
-
-
-LUA_API void lua_concat (lua_State *L, int n) {
- lua_lock(L);
- luaC_checkGC(L);
- api_checknelems(L, n);
- if (n >= 2) {
- luaV_concat(L, n, L->top - L->base - 1);
- L->top -= (n-1);
- }
- else if (n == 0) { /* push empty string */
- setsvalue2s(L->top, luaS_newlstr(L, NULL, 0));
- api_incr_top(L);
- }
- /* else n == 1; nothing to do */
- lua_unlock(L);
-}
-
-
-LUA_API void *lua_newuserdata (lua_State *L, size_t size) {
- Udata *u;
- lua_lock(L);
- luaC_checkGC(L);
- u = luaS_newudata(L, size);
- setuvalue(L->top, u);
- api_incr_top(L);
- lua_unlock(L);
- return u + 1;
-}
-
-
-LUA_API int lua_pushupvalues (lua_State *L) {
- Closure *func;
- int n, i;
- lua_lock(L);
- api_check(L, iscfunction(L->base - 1));
- func = clvalue(L->base - 1);
- n = func->c.nupvalues;
- luaD_checkstack(L, n + LUA_MINSTACK);
- for (i=0; i<n; i++) {
- setobj2s(L->top, &func->c.upvalue[i]);
- L->top++;
- }
- lua_unlock(L);
- return n;
-}
-
-
-static const char *aux_upvalue (lua_State *L, int funcindex, int n,
- TObject **val)
-{
- Closure *f;
- StkId fi = luaA_index(L, funcindex);
- if (!ttisfunction(fi)) return NULL;
- f = clvalue(fi);
- if (f->c.isC) {
- if (n > f->c.nupvalues) return NULL;
- *val = &f->c.upvalue[n-1];
- return "";
- }
- else {
- Proto *p = f->l.p;
- if (n > p->sizeupvalues) return NULL;
- *val = f->l.upvals[n-1]->v;
- return getstr(p->upvalues[n-1]);
- }
-}
-
-
-LUA_API const char *lua_getupvalue (lua_State *L, int funcindex, int n) {
- const char *name;
- TObject *val;
- lua_lock(L);
- name = aux_upvalue(L, funcindex, n, &val);
- if (name) {
- setobj2s(L->top, val);
- api_incr_top(L);
- }
- lua_unlock(L);
- return name;
-}
-
-
-LUA_API const char *lua_setupvalue (lua_State *L, int funcindex, int n) {
- const char *name;
- TObject *val;
- lua_lock(L);
- api_checknelems(L, 1);
- name = aux_upvalue(L, funcindex, n, &val);
- if (name) {
- L->top--;
- setobj(val, L->top); /* write barrier */
- }
- lua_unlock(L);
- return name;
-}
-
+++ /dev/null
-/*
-** $Id: lapi.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Auxiliary functions from Lua API
-** See Copyright Notice in lua.h
-*/
-
-#ifndef lapi_h
-#define lapi_h
-
-
-#include "lobject.h"
-
-
-void luaA_pushobject (lua_State *L, const TObject *o);
-
-#endif
+++ /dev/null
-/*
-** $Id: lcode.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Code generator for Lua
-** See Copyright Notice in lua.h
-*/
-
-
-#include <stdlib.h>
-
-#define lcode_c
-
-#include "lua.h"
-
-#include "lcode.h"
-#include "ldebug.h"
-#include "ldo.h"
-#include "llex.h"
-#include "lmem.h"
-#include "lobject.h"
-#include "lopcodes.h"
-#include "lparser.h"
-#include "ltable.h"
-
-
-#define hasjumps(e) ((e)->t != (e)->f)
-
-
-void luaK_nil (FuncState *fs, int from, int n) {
- Instruction *previous;
- if (fs->pc > fs->lasttarget && /* no jumps to current position? */
- GET_OPCODE(*(previous = &fs->f->code[fs->pc-1])) == OP_LOADNIL) {
- int pfrom = GETARG_A(*previous);
- int pto = GETARG_B(*previous);
- if (pfrom <= from && from <= pto+1) { /* can connect both? */
- if (from+n-1 > pto)
- SETARG_B(*previous, from+n-1);
- return;
- }
- }
- luaK_codeABC(fs, OP_LOADNIL, from, from+n-1, 0); /* else no optimization */
-}
-
-
-int luaK_jump (FuncState *fs) {
- int jpc = fs->jpc; /* save list of jumps to here */
- int j;
- fs->jpc = NO_JUMP;
- j = luaK_codeAsBx(fs, OP_JMP, 0, NO_JUMP);
- luaK_concat(fs, &j, jpc); /* keep them on hold */
- return j;
-}
-
-
-static int luaK_condjump (FuncState *fs, OpCode op, int A, int B, int C)
-{
- luaK_codeABC(fs, op, A, B, C);
- return luaK_jump(fs);
-}
-
-
-static void luaK_fixjump (FuncState *fs, int pc, int dest)
-{
- Instruction *jmp = &fs->f->code[pc];
- int offset = dest-(pc+1);
- lua_assert(dest != NO_JUMP);
- if (abs(offset) > MAXARG_sBx)
- luaX_syntaxerror(fs->ls, "control structure too long");
- SETARG_sBx(*jmp, offset);
-}
-
-
-/*
-** returns current `pc' and marks it as a jump target (to avoid wrong
-** optimizations with consecutive instructions not in the same basic block).
-*/
-int luaK_getlabel (FuncState *fs) {
- fs->lasttarget = fs->pc;
- return fs->pc;
-}
-
-
-static int luaK_getjump (FuncState *fs, int pc)
-{
- int offset = GETARG_sBx(fs->f->code[pc]);
- if (offset == NO_JUMP) /* point to itself represents end of list */
- return NO_JUMP; /* end of list */
- else
- return (pc+1)+offset; /* turn offset into absolute position */
-}
-
-
-static Instruction *getjumpcontrol (FuncState *fs, int pc)
-{
- Instruction *pi = &fs->f->code[pc];
- if (pc >= 1 && testOpMode(GET_OPCODE(*(pi-1)), OpModeT))
- return pi-1;
- else
- return pi;
-}
-
-
-/*
-** check whether list has any jump that do not produce a value
-** (or produce an inverted value)
-*/
-static int need_value (FuncState *fs, int list, int cond)
-{
- for (; list != NO_JUMP; list = luaK_getjump(fs, list)) {
- Instruction i = *getjumpcontrol(fs, list);
- if (GET_OPCODE(i) != OP_TEST || GETARG_C(i) != cond) return 1;
- }
- return 0; /* not found */
-}
-
-
-static void patchtestreg (Instruction *i, int reg)
-{
- if (reg == NO_REG) reg = GETARG_B(*i);
- SETARG_A(*i, reg);
-}
-
-
-static void luaK_patchlistaux (FuncState *fs, int list,
- int ttarget, int treg, int ftarget, int freg, int dtarget)
-{
- while (list != NO_JUMP) {
- int next = luaK_getjump(fs, list);
- Instruction *i = getjumpcontrol(fs, list);
- if (GET_OPCODE(*i) != OP_TEST) {
- lua_assert(dtarget != NO_JUMP);
- luaK_fixjump(fs, list, dtarget); /* jump to default target */
- }
- else {
- if (GETARG_C(*i)) {
- lua_assert(ttarget != NO_JUMP);
- patchtestreg(i, treg);
- luaK_fixjump(fs, list, ttarget);
- }
- else {
- lua_assert(ftarget != NO_JUMP);
- patchtestreg(i, freg);
- luaK_fixjump(fs, list, ftarget);
- }
- }
- list = next;
- }
-}
-
-
-static void luaK_dischargejpc (FuncState *fs)
-{
- luaK_patchlistaux(fs, fs->jpc, fs->pc, NO_REG, fs->pc, NO_REG, fs->pc);
- fs->jpc = NO_JUMP;
-}
-
-
-void luaK_patchlist (FuncState *fs, int list, int target) {
- if (target == fs->pc)
- luaK_patchtohere(fs, list);
- else {
- lua_assert(target < fs->pc);
- luaK_patchlistaux(fs, list, target, NO_REG, target, NO_REG, target);
- }
-}
-
-
-void luaK_patchtohere (FuncState *fs, int list) {
- luaK_getlabel(fs);
- luaK_concat(fs, &fs->jpc, list);
-}
-
-
-void luaK_concat (FuncState *fs, int *l1, int l2) {
- if (l2 == NO_JUMP) return;
- else if (*l1 == NO_JUMP)
- *l1 = l2;
- else {
- int list = *l1;
- int next;
- while ((next = luaK_getjump(fs, list)) != NO_JUMP) /* find last element */
- list = next;
- luaK_fixjump(fs, list, l2);
- }
-}
-
-
-void luaK_checkstack (FuncState *fs, int n) {
- int newstack = fs->freereg + n;
- if (newstack > fs->f->maxstacksize) {
- if (newstack >= MAXSTACK)
- luaX_syntaxerror(fs->ls, "function or expression too complex");
- fs->f->maxstacksize = cast(lu_byte, newstack);
- }
-}
-
-
-void luaK_reserveregs (FuncState *fs, int n) {
- luaK_checkstack(fs, n);
- fs->freereg += n;
-}
-
-
-static void freereg (FuncState *fs, int reg)
-{
- if (reg >= fs->nactvar && reg < MAXSTACK) {
- fs->freereg--;
- lua_assert(reg == fs->freereg);
- }
-}
-
-
-static void freeexp (FuncState *fs, expdesc *e)
-{
- if (e->k == VNONRELOC)
- freereg(fs, e->info);
-}
-
-
-static int addk (FuncState *fs, TObject *k, TObject *v)
-{
- const TObject *idx = luaH_get(fs->h, k);
- if (ttisnumber(idx)) {
- lua_assert(luaO_rawequalObj(&fs->f->k[cast(int, nvalue(idx))], v));
- return cast(int, nvalue(idx));
- }
- else { /* constant not found; create a new entry */
- Proto *f = fs->f;
- luaM_growvector(fs->L, f->k, fs->nk, f->sizek, TObject,
- MAXARG_Bx, "constant table overflow");
- setobj2n(&f->k[fs->nk], v);
- setnvalue(luaH_set(fs->L, fs->h, k), cast(lua_Number, fs->nk));
- return fs->nk++;
- }
-}
-
-
-int luaK_stringK (FuncState *fs, TString *s) {
- TObject o;
- setsvalue(&o, s);
- return addk(fs, &o, &o);
-}
-
-
-int luaK_numberK (FuncState *fs, lua_Number r) {
- TObject o;
- setnvalue(&o, r);
- return addk(fs, &o, &o);
-}
-
-
-static int nil_constant (FuncState *fs)
-{
- TObject k, v;
- setnilvalue(&v);
- sethvalue(&k, fs->h); /* cannot use nil as key; instead use table itself */
- return addk(fs, &k, &v);
-}
-
-
-void luaK_setcallreturns (FuncState *fs, expdesc *e, int nresults) {
- if (e->k == VCALL) { /* expression is an open function call? */
- SETARG_C(getcode(fs, e), nresults+1);
- if (nresults == 1) { /* `regular' expression? */
- e->k = VNONRELOC;
- e->info = GETARG_A(getcode(fs, e));
- }
- }
-}
-
-
-void luaK_dischargevars (FuncState *fs, expdesc *e) {
- switch (e->k) {
- case VLOCAL: {
- e->k = VNONRELOC;
- break;
- }
- case VUPVAL: {
- e->info = luaK_codeABC(fs, OP_GETUPVAL, 0, e->info, 0);
- e->k = VRELOCABLE;
- break;
- }
- case VGLOBAL: {
- e->info = luaK_codeABx(fs, OP_GETGLOBAL, 0, e->info);
- e->k = VRELOCABLE;
- break;
- }
- case VINDEXED: {
- freereg(fs, e->aux);
- freereg(fs, e->info);
- e->info = luaK_codeABC(fs, OP_GETTABLE, 0, e->info, e->aux);
- e->k = VRELOCABLE;
- break;
- }
- case VCALL: {
- luaK_setcallreturns(fs, e, 1);
- break;
- }
- default: break; /* there is one value available (somewhere) */
- }
-}
-
-
-static int code_label (FuncState *fs, int A, int b, int jump)
-{
- luaK_getlabel(fs); /* those instructions may be jump targets */
- return luaK_codeABC(fs, OP_LOADBOOL, A, b, jump);
-}
-
-
-static void discharge2reg (FuncState *fs, expdesc *e, int reg)
-{
- luaK_dischargevars(fs, e);
- switch (e->k) {
- case VNIL: {
- luaK_nil(fs, reg, 1);
- break;
- }
- case VFALSE: case VTRUE: {
- luaK_codeABC(fs, OP_LOADBOOL, reg, e->k == VTRUE, 0);
- break;
- }
- case VK: {
- luaK_codeABx(fs, OP_LOADK, reg, e->info);
- break;
- }
- case VRELOCABLE: {
- Instruction *pc = &getcode(fs, e);
- SETARG_A(*pc, reg);
- break;
- }
- case VNONRELOC: {
- if (reg != e->info)
- luaK_codeABC(fs, OP_MOVE, reg, e->info, 0);
- break;
- }
- default: {
- lua_assert(e->k == VVOID || e->k == VJMP);
- return; /* nothing to do... */
- }
- }
- e->info = reg;
- e->k = VNONRELOC;
-}
-
-
-static void discharge2anyreg (FuncState *fs, expdesc *e)
-{
- if (e->k != VNONRELOC) {
- luaK_reserveregs(fs, 1);
- discharge2reg(fs, e, fs->freereg-1);
- }
-}
-
-
-static void luaK_exp2reg (FuncState *fs, expdesc *e, int reg)
-{
- discharge2reg(fs, e, reg);
- if (e->k == VJMP)
- luaK_concat(fs, &e->t, e->info); /* put this jump in `t' list */
- if (hasjumps(e)) {
- int final; /* position after whole expression */
- int p_f = NO_JUMP; /* position of an eventual LOAD false */
- int p_t = NO_JUMP; /* position of an eventual LOAD true */
- if (need_value(fs, e->t, 1) || need_value(fs, e->f, 0)) {
- int fj = NO_JUMP; /* first jump (over LOAD ops.) */
- if (e->k != VJMP)
- fj = luaK_jump(fs);
- p_f = code_label(fs, reg, 0, 1);
- p_t = code_label(fs, reg, 1, 0);
- luaK_patchtohere(fs, fj);
- }
- final = luaK_getlabel(fs);
- luaK_patchlistaux(fs, e->f, p_f, NO_REG, final, reg, p_f);
- luaK_patchlistaux(fs, e->t, final, reg, p_t, NO_REG, p_t);
- }
- e->f = e->t = NO_JUMP;
- e->info = reg;
- e->k = VNONRELOC;
-}
-
-
-void luaK_exp2nextreg (FuncState *fs, expdesc *e) {
- luaK_dischargevars(fs, e);
- freeexp(fs, e);
- luaK_reserveregs(fs, 1);
- luaK_exp2reg(fs, e, fs->freereg - 1);
-}
-
-
-int luaK_exp2anyreg (FuncState *fs, expdesc *e) {
- luaK_dischargevars(fs, e);
- if (e->k == VNONRELOC) {
- if (!hasjumps(e)) return e->info; /* exp is already in a register */
- if (e->info >= fs->nactvar) { /* reg. is not a local? */
- luaK_exp2reg(fs, e, e->info); /* put value on it */
- return e->info;
- }
- }
- luaK_exp2nextreg(fs, e); /* default */
- return e->info;
-}
-
-
-void luaK_exp2val (FuncState *fs, expdesc *e) {
- if (hasjumps(e))
- luaK_exp2anyreg(fs, e);
- else
- luaK_dischargevars(fs, e);
-}
-
-
-int luaK_exp2RK (FuncState *fs, expdesc *e) {
- luaK_exp2val(fs, e);
- switch (e->k) {
- case VNIL: {
- if (fs->nk + MAXSTACK <= MAXARG_C) { /* constant fit in argC? */
- e->info = nil_constant(fs);
- e->k = VK;
- return e->info + MAXSTACK;
- }
- else break;
- }
- case VK: {
- if (e->info + MAXSTACK <= MAXARG_C) /* constant fit in argC? */
- return e->info + MAXSTACK;
- else break;
- }
- default: break;
- }
- /* not a constant in the right range: put it in a register */
- return luaK_exp2anyreg(fs, e);
-}
-
-
-void luaK_storevar (FuncState *fs, expdesc *var, expdesc *exp) {
- switch (var->k) {
- case VLOCAL: {
- freeexp(fs, exp);
- luaK_exp2reg(fs, exp, var->info);
- return;
- }
- case VUPVAL: {
- int e = luaK_exp2anyreg(fs, exp);
- luaK_codeABC(fs, OP_SETUPVAL, e, var->info, 0);
- break;
- }
- case VGLOBAL: {
- int e = luaK_exp2anyreg(fs, exp);
- luaK_codeABx(fs, OP_SETGLOBAL, e, var->info);
- break;
- }
- case VINDEXED: {
- int e = luaK_exp2RK(fs, exp);
- luaK_codeABC(fs, OP_SETTABLE, var->info, var->aux, e);
- break;
- }
- default: {
- lua_assert(0); /* invalid var kind to store */
- break;
- }
- }
- freeexp(fs, exp);
-}
-
-
-void luaK_self (FuncState *fs, expdesc *e, expdesc *key) {
- int func;
- luaK_exp2anyreg(fs, e);
- freeexp(fs, e);
- func = fs->freereg;
- luaK_reserveregs(fs, 2);
- luaK_codeABC(fs, OP_SELF, func, e->info, luaK_exp2RK(fs, key));
- freeexp(fs, key);
- e->info = func;
- e->k = VNONRELOC;
-}
-
-
-static void invertjump (FuncState *fs, expdesc *e)
-{
- Instruction *pc = getjumpcontrol(fs, e->info);
- lua_assert(testOpMode(GET_OPCODE(*pc), OpModeT) &&
- GET_OPCODE(*pc) != OP_TEST);
- SETARG_A(*pc, !(GETARG_A(*pc)));
-}
-
-
-static int jumponcond (FuncState *fs, expdesc *e, int cond)
-{
- if (e->k == VRELOCABLE) {
- Instruction ie = getcode(fs, e);
- if (GET_OPCODE(ie) == OP_NOT) {
- fs->pc--; /* remove previous OP_NOT */
- return luaK_condjump(fs, OP_TEST, NO_REG, GETARG_B(ie), !cond);
- }
- /* else go through */
- }
- discharge2anyreg(fs, e);
- freeexp(fs, e);
- return luaK_condjump(fs, OP_TEST, NO_REG, e->info, cond);
-}
-
-
-void luaK_goiftrue (FuncState *fs, expdesc *e) {
- int pc; /* pc of last jump */
- luaK_dischargevars(fs, e);
- switch (e->k) {
- case VK: case VTRUE: {
- pc = NO_JUMP; /* always true; do nothing */
- break;
- }
- case VFALSE: {
- pc = luaK_jump(fs); /* always jump */
- break;
- }
- case VJMP: {
- invertjump(fs, e);
- pc = e->info;
- break;
- }
- default: {
- pc = jumponcond(fs, e, 0);
- break;
- }
- }
- luaK_concat(fs, &e->f, pc); /* insert last jump in `f' list */
-}
-
-
-void luaK_goiffalse (FuncState *fs, expdesc *e) {
- int pc; /* pc of last jump */
- luaK_dischargevars(fs, e);
- switch (e->k) {
- case VNIL: case VFALSE: {
- pc = NO_JUMP; /* always false; do nothing */
- break;
- }
- case VTRUE: {
- pc = luaK_jump(fs); /* always jump */
- break;
- }
- case VJMP: {
- pc = e->info;
- break;
- }
- default: {
- pc = jumponcond(fs, e, 1);
- break;
- }
- }
- luaK_concat(fs, &e->t, pc); /* insert last jump in `t' list */
-}
-
-
-static void codenot (FuncState *fs, expdesc *e)
-{
- luaK_dischargevars(fs, e);
- switch (e->k) {
- case VNIL: case VFALSE: {
- e->k = VTRUE;
- break;
- }
- case VK: case VTRUE: {
- e->k = VFALSE;
- break;
- }
- case VJMP: {
- invertjump(fs, e);
- break;
- }
- case VRELOCABLE:
- case VNONRELOC: {
- discharge2anyreg(fs, e);
- freeexp(fs, e);
- e->info = luaK_codeABC(fs, OP_NOT, 0, e->info, 0);
- e->k = VRELOCABLE;
- break;
- }
- default: {
- lua_assert(0); /* cannot happen */
- break;
- }
- }
- /* interchange true and false lists */
- { int temp = e->f; e->f = e->t; e->t = temp; }
-}
-
-
-void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k) {
- t->aux = luaK_exp2RK(fs, k);
- t->k = VINDEXED;
-}
-
-
-void luaK_prefix (FuncState *fs, UnOpr op, expdesc *e) {
- if (op == OPR_MINUS) {
- luaK_exp2val(fs, e);
- if (e->k == VK && ttisnumber(&fs->f->k[e->info]))
- e->info = luaK_numberK(fs, -nvalue(&fs->f->k[e->info]));
- else {
- luaK_exp2anyreg(fs, e);
- freeexp(fs, e);
- e->info = luaK_codeABC(fs, OP_UNM, 0, e->info, 0);
- e->k = VRELOCABLE;
- }
- }
- else /* op == NOT */
- codenot(fs, e);
-}
-
-
-void luaK_infix (FuncState *fs, BinOpr op, expdesc *v) {
- switch (op) {
- case OPR_AND: {
- luaK_goiftrue(fs, v);
- luaK_patchtohere(fs, v->t);
- v->t = NO_JUMP;
- break;
- }
- case OPR_OR: {
- luaK_goiffalse(fs, v);
- luaK_patchtohere(fs, v->f);
- v->f = NO_JUMP;
- break;
- }
- case OPR_CONCAT: {
- luaK_exp2nextreg(fs, v); /* operand must be on the `stack' */
- break;
- }
- default: {
- luaK_exp2RK(fs, v);
- break;
- }
- }
-}
-
-
-static void codebinop (FuncState *fs, expdesc *res, BinOpr op,
- int o1, int o2)
-{
- if (op <= OPR_POW) { /* arithmetic operator? */
- OpCode opc = cast(OpCode, (op - OPR_ADD) + OP_ADD); /* ORDER OP */
- res->info = luaK_codeABC(fs, opc, 0, o1, o2);
- res->k = VRELOCABLE;
- }
- else { /* test operator */
- static const OpCode ops[] = {OP_EQ, OP_EQ, OP_LT, OP_LE, OP_LT, OP_LE};
- int cond = 1;
- if (op >= OPR_GT) { /* `>' or `>='? */
- int temp; /* exchange args and replace by `<' or `<=' */
- temp = o1; o1 = o2; o2 = temp; /* o1 <==> o2 */
- }
- else if (op == OPR_NE) cond = 0;
- res->info = luaK_condjump(fs, ops[op - OPR_NE], cond, o1, o2);
- res->k = VJMP;
- }
-}
-
-
-void luaK_posfix (FuncState *fs, BinOpr op, expdesc *e1, expdesc *e2) {
- switch (op) {
- case OPR_AND: {
- lua_assert(e1->t == NO_JUMP); /* list must be closed */
- luaK_dischargevars(fs, e2);
- luaK_concat(fs, &e1->f, e2->f);
- e1->k = e2->k; e1->info = e2->info; e1->aux = e2->aux; e1->t = e2->t;
- break;
- }
- case OPR_OR: {
- lua_assert(e1->f == NO_JUMP); /* list must be closed */
- luaK_dischargevars(fs, e2);
- luaK_concat(fs, &e1->t, e2->t);
- e1->k = e2->k; e1->info = e2->info; e1->aux = e2->aux; e1->f = e2->f;
- break;
- }
- case OPR_CONCAT: {
- luaK_exp2val(fs, e2);
- if (e2->k == VRELOCABLE && GET_OPCODE(getcode(fs, e2)) == OP_CONCAT) {
- lua_assert(e1->info == GETARG_B(getcode(fs, e2))-1);
- freeexp(fs, e1);
- SETARG_B(getcode(fs, e2), e1->info);
- e1->k = e2->k; e1->info = e2->info;
- }
- else {
- luaK_exp2nextreg(fs, e2);
- freeexp(fs, e2);
- freeexp(fs, e1);
- e1->info = luaK_codeABC(fs, OP_CONCAT, 0, e1->info, e2->info);
- e1->k = VRELOCABLE;
- }
- break;
- }
- default: {
- int o1 = luaK_exp2RK(fs, e1);
- int o2 = luaK_exp2RK(fs, e2);
- freeexp(fs, e2);
- freeexp(fs, e1);
- codebinop(fs, e1, op, o1, o2);
- }
- }
-}
-
-
-void luaK_fixline (FuncState *fs, int line) {
- fs->f->lineinfo[fs->pc - 1] = line;
-}
-
-
-int luaK_code (FuncState *fs, Instruction i, int line) {
- Proto *f = fs->f;
- luaK_dischargejpc(fs); /* `pc' will change */
- /* put new instruction in code array */
- luaM_growvector(fs->L, f->code, fs->pc, f->sizecode, Instruction,
- MAX_INT, "code size overflow");
- f->code[fs->pc] = i;
- /* save corresponding line information */
- luaM_growvector(fs->L, f->lineinfo, fs->pc, f->sizelineinfo, int,
- MAX_INT, "code size overflow");
- f->lineinfo[fs->pc] = line;
- return fs->pc++;
-}
-
-
-int luaK_codeABC (FuncState *fs, OpCode o, int a, int b, int c) {
- lua_assert(getOpMode(o) == iABC);
- return luaK_code(fs, CREATE_ABC(o, a, b, c), fs->ls->lastline);
-}
-
-
-int luaK_codeABx (FuncState *fs, OpCode o, int a, unsigned int bc) {
- lua_assert(getOpMode(o) == iABx || getOpMode(o) == iAsBx);
- return luaK_code(fs, CREATE_ABx(o, a, bc), fs->ls->lastline);
-}
-
+++ /dev/null
-/*
-** $Id: lcode.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Code generator for Lua
-** See Copyright Notice in lua.h
-*/
-
-#ifndef lcode_h
-#define lcode_h
-
-#include "llex.h"
-#include "lobject.h"
-#include "lopcodes.h"
-#include "lparser.h"
-
-
-/*
-** Marks the end of a patch list. It is an invalid value both as an absolute
-** address, and as a list link (would link an element to itself).
-*/
-#define NO_JUMP (-1)
-
-
-/*
-** grep "ORDER OPR" if you change these enums
-*/
-typedef enum BinOpr {
- OPR_ADD, OPR_SUB, OPR_MULT, OPR_DIV, OPR_POW,
- OPR_CONCAT,
- OPR_NE, OPR_EQ,
- OPR_LT, OPR_LE, OPR_GT, OPR_GE,
- OPR_AND, OPR_OR,
- OPR_NOBINOPR
-} BinOpr;
-
-#define binopistest(op) ((op) >= OPR_NE)
-
-typedef enum UnOpr { OPR_MINUS, OPR_NOT, OPR_NOUNOPR } UnOpr;
-
-
-#define getcode(fs,e) ((fs)->f->code[(e)->info])
-
-#define luaK_codeAsBx(fs,o,A,sBx) luaK_codeABx(fs,o,A,(sBx)+MAXARG_sBx)
-
-int luaK_code (FuncState *fs, Instruction i, int line);
-int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx);
-int luaK_codeABC (FuncState *fs, OpCode o, int A, int B, int C);
-void luaK_fixline (FuncState *fs, int line);
-void luaK_nil (FuncState *fs, int from, int n);
-void luaK_reserveregs (FuncState *fs, int n);
-void luaK_checkstack (FuncState *fs, int n);
-int luaK_stringK (FuncState *fs, TString *s);
-int luaK_numberK (FuncState *fs, lua_Number r);
-void luaK_dischargevars (FuncState *fs, expdesc *e);
-int luaK_exp2anyreg (FuncState *fs, expdesc *e);
-void luaK_exp2nextreg (FuncState *fs, expdesc *e);
-void luaK_exp2val (FuncState *fs, expdesc *e);
-int luaK_exp2RK (FuncState *fs, expdesc *e);
-void luaK_self (FuncState *fs, expdesc *e, expdesc *key);
-void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k);
-void luaK_goiftrue (FuncState *fs, expdesc *e);
-void luaK_goiffalse (FuncState *fs, expdesc *e);
-void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e);
-void luaK_setcallreturns (FuncState *fs, expdesc *var, int nresults);
-int luaK_jump (FuncState *fs);
-void luaK_patchlist (FuncState *fs, int list, int target);
-void luaK_patchtohere (FuncState *fs, int list);
-void luaK_concat (FuncState *fs, int *l1, int l2);
-int luaK_getlabel (FuncState *fs);
-void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v);
-void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
-void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1, expdesc *v2);
-
-
-#endif
+++ /dev/null
-/*
-** $Id: ldebug.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Debug Interface
-** See Copyright Notice in lua.h
-*/
-
-
-#include <stdlib.h>
-#include <string.h>
-
-#define ldebug_c
-
-#include "lua.h"
-
-#include "lapi.h"
-#include "lcode.h"
-#include "ldebug.h"
-#include "ldo.h"
-#include "lfunc.h"
-#include "lobject.h"
-#include "lopcodes.h"
-#include "lstate.h"
-#include "lstring.h"
-#include "ltable.h"
-#include "ltm.h"
-#include "lvm.h"
-
-
-
-static const char *getfuncname (CallInfo *ci, const char **name);
-
-
-#define isLua(ci) (!((ci)->state & CI_C))
-
-
-static int currentpc (CallInfo *ci)
-{
- if (!isLua(ci)) return -1; /* function is not a Lua function? */
- if (ci->state & CI_HASFRAME) /* function has a frame? */
- ci->u.l.savedpc = *ci->u.l.pc; /* use `pc' from there */
- /* function's pc is saved */
- return pcRel(ci->u.l.savedpc, ci_func(ci)->l.p);
-}
-
-
-static int currentline (CallInfo *ci)
-{
- int pc = currentpc(ci);
- if (pc < 0)
- return -1; /* only active lua functions have current-line information */
- else
- return getline(ci_func(ci)->l.p, pc);
-}
-
-
-void luaG_inithooks (lua_State *L) {
- CallInfo *ci;
- for (ci = L->ci; ci != L->base_ci; ci--) /* update all `savedpc's */
- currentpc(ci);
- L->hookinit = 1;
-}
-
-
-/*
-** this function can be called asynchronous (e.g. during a signal)
-*/
-LUA_API int lua_sethook (lua_State *L, lua_Hook func, int mask, int count) {
- if (func == NULL || mask == 0) { /* turn off hooks? */
- mask = 0;
- func = NULL;
- }
- L->hook = func;
- L->basehookcount = count;
- resethookcount(L);
- L->hookmask = cast(lu_byte, mask);
- L->hookinit = 0;
- return 1;
-}
-
-
-LUA_API lua_Hook lua_gethook (lua_State *L) {
- return L->hook;
-}
-
-
-LUA_API int lua_gethookmask (lua_State *L) {
- return L->hookmask;
-}
-
-
-LUA_API int lua_gethookcount (lua_State *L) {
- return L->basehookcount;
-}
-
-
-LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar) {
- int status;
- CallInfo *ci;
- lua_lock(L);
- for (ci = L->ci; level > 0 && ci > L->base_ci; ci--) {
- level--;
- if (!(ci->state & CI_C)) /* Lua function? */
- level -= ci->u.l.tailcalls; /* skip lost tail calls */
- }
- if (level > 0 || ci == L->base_ci) status = 0; /* there is no such level */
- else if (level < 0) { /* level is of a lost tail call */
- status = 1;
- ar->i_ci = 0;
- }
- else {
- status = 1;
- ar->i_ci = ci - L->base_ci;
- }
- lua_unlock(L);
- return status;
-}
-
-
-static Proto *getluaproto (CallInfo *ci)
-{
- return (isLua(ci) ? ci_func(ci)->l.p : NULL);
-}
-
-
-LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n) {
- const char *name;
- CallInfo *ci;
- Proto *fp;
- lua_lock(L);
- name = NULL;
- ci = L->base_ci + ar->i_ci;
- fp = getluaproto(ci);
- if (fp) { /* is a Lua function? */
- name = luaF_getlocalname(fp, n, currentpc(ci));
- if (name)
- luaA_pushobject(L, ci->base+(n-1)); /* push value */
- }
- lua_unlock(L);
- return name;
-}
-
-
-LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n) {
- const char *name;
- CallInfo *ci;
- Proto *fp;
- lua_lock(L);
- name = NULL;
- ci = L->base_ci + ar->i_ci;
- fp = getluaproto(ci);
- L->top--; /* pop new value */
- if (fp) { /* is a Lua function? */
- name = luaF_getlocalname(fp, n, currentpc(ci));
- if (!name || name[0] == '(') /* `(' starts private locals */
- name = NULL;
- else
- setobjs2s(ci->base+(n-1), L->top);
- }
- lua_unlock(L);
- return name;
-}
-
-
-static void funcinfo (lua_Debug *ar, StkId func)
-{
- Closure *cl = clvalue(func);
- if (cl->c.isC) {
- ar->source = "=[C]";
- ar->linedefined = -1;
- ar->what = "C";
- }
- else {
- ar->source = getstr(cl->l.p->source);
- ar->linedefined = cl->l.p->lineDefined;
- ar->what = (ar->linedefined == 0) ? "main" : "Lua";
- }
- luaO_chunkid(ar->short_src, ar->source, LUA_IDSIZE);
-}
-
-
-static const char *travglobals (lua_State *L, const TObject *o)
-{
- Table *g = hvalue(gt(L));
- int i = sizenode(g);
- while (i--) {
- Node *n = gnode(g, i);
- if (luaO_rawequalObj(o, gval(n)) && ttisstring(gkey(n)))
- return getstr(tsvalue(gkey(n)));
- }
- return NULL;
-}
-
-
-static void info_tailcall (lua_State *L, lua_Debug *ar)
-{
- ar->name = ar->namewhat = "";
- ar->what = "tail";
- ar->linedefined = ar->currentline = -1;
- ar->source = "=(tail call)";
- luaO_chunkid(ar->short_src, ar->source, LUA_IDSIZE);
- ar->nups = 0;
- setnilvalue(L->top);
-}
-
-
-static int auxgetinfo (lua_State *L, const char *what, lua_Debug *ar,
- StkId f, CallInfo *ci)
-{
- int status = 1;
- for (; *what; what++) {
- switch (*what) {
- case 'S': {
- funcinfo(ar, f);
- break;
- }
- case 'l': {
- ar->currentline = (ci) ? currentline(ci) : -1;
- break;
- }
- case 'u': {
- ar->nups = clvalue(f)->c.nupvalues;
- break;
- }
- case 'n': {
- ar->namewhat = (ci) ? getfuncname(ci, &ar->name) : NULL;
- if (ar->namewhat == NULL) {
- /* try to find a global name */
- if ((ar->name = travglobals(L, f)) != NULL)
- ar->namewhat = "global";
- else ar->namewhat = ""; /* not found */
- }
- break;
- }
- case 'f': {
- setobj2s(L->top, f);
- break;
- }
- default: status = 0; /* invalid option */
- }
- }
- return status;
-}
-
-
-LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar) {
- int status = 1;
- lua_lock(L);
- if (*what == '>') {
- StkId f = L->top - 1;
- if (!ttisfunction(f))
- luaG_runerror(L, "value for `lua_getinfo' is not a function");
- status = auxgetinfo(L, what + 1, ar, f, NULL);
- L->top--; /* pop function */
- }
- else if (ar->i_ci != 0) { /* no tail call? */
- CallInfo *ci = L->base_ci + ar->i_ci;
- lua_assert(ttisfunction(ci->base - 1));
- status = auxgetinfo(L, what, ar, ci->base - 1, ci);
- }
- else
- info_tailcall(L, ar);
- if (strchr(what, 'f')) incr_top(L);
- lua_unlock(L);
- return status;
-}
-
-
-/*
-** {======================================================
-** Symbolic Execution and code checker
-** =======================================================
-*/
-
-#define check(x) if (!(x)) return 0;
-
-#define checkjump(pt,pc) check(0 <= pc && pc < pt->sizecode)
-
-#define checkreg(pt,reg) check((reg) < (pt)->maxstacksize)
-
-
-
-static int precheck (const Proto *pt)
-{
- check(pt->maxstacksize <= MAXSTACK);
- check(pt->sizelineinfo == pt->sizecode || pt->sizelineinfo == 0);
- lua_assert(pt->numparams+pt->is_vararg <= pt->maxstacksize);
- check(GET_OPCODE(pt->code[pt->sizecode-1]) == OP_RETURN);
- return 1;
-}
-
-
-static int checkopenop (const Proto *pt, int pc)
-{
- Instruction i = pt->code[pc+1];
- switch (GET_OPCODE(i)) {
- case OP_CALL:
- case OP_TAILCALL:
- case OP_RETURN: {
- check(GETARG_B(i) == 0);
- return 1;
- }
- case OP_SETLISTO: return 1;
- default: return 0; /* invalid instruction after an open call */
- }
-}
-
-
-static int checkRK (const Proto *pt, int r)
-{
- return (r < pt->maxstacksize || (r >= MAXSTACK && r-MAXSTACK < pt->sizek));
-}
-
-
-static Instruction luaG_symbexec (const Proto *pt, int lastpc, int reg)
-{
- int pc;
- int last; /* stores position of last instruction that changed `reg' */
- last = pt->sizecode-1; /* points to final return (a `neutral' instruction) */
- check(precheck(pt));
- for (pc = 0; pc < lastpc; pc++) {
- const Instruction i = pt->code[pc];
- OpCode op = GET_OPCODE(i);
- int a = GETARG_A(i);
- int b = 0;
- int c = 0;
- checkreg(pt, a);
- switch (getOpMode(op)) {
- case iABC: {
- b = GETARG_B(i);
- c = GETARG_C(i);
- if (testOpMode(op, OpModeBreg)) {
- checkreg(pt, b);
- }
- else if (testOpMode(op, OpModeBrk))
- check(checkRK(pt, b));
- if (testOpMode(op, OpModeCrk))
- check(checkRK(pt, c));
- break;
- }
- case iABx: {
- b = GETARG_Bx(i);
- if (testOpMode(op, OpModeK)) check(b < pt->sizek);
- break;
- }
- case iAsBx: {
- b = GETARG_sBx(i);
- break;
- }
- }
- if (testOpMode(op, OpModesetA)) {
- if (a == reg) last = pc; /* change register `a' */
- }
- if (testOpMode(op, OpModeT)) {
- check(pc+2 < pt->sizecode); /* check skip */
- check(GET_OPCODE(pt->code[pc+1]) == OP_JMP);
- }
- switch (op) {
- case OP_LOADBOOL: {
- check(c == 0 || pc+2 < pt->sizecode); /* check its jump */
- break;
- }
- case OP_LOADNIL: {
- if (a <= reg && reg <= b)
- last = pc; /* set registers from `a' to `b' */
- break;
- }
- case OP_GETUPVAL:
- case OP_SETUPVAL: {
- check(b < pt->nups);
- break;
- }
- case OP_GETGLOBAL:
- case OP_SETGLOBAL: {
- check(ttisstring(&pt->k[b]));
- break;
- }
- case OP_SELF: {
- checkreg(pt, a+1);
- if (reg == a+1) last = pc;
- break;
- }
- case OP_CONCAT: {
- /* `c' is a register, and at least two operands */
- check(c < MAXSTACK && b < c);
- break;
- }
- case OP_TFORLOOP:
- checkreg(pt, a+c+5);
- if (reg >= a) last = pc; /* affect all registers above base */
- /* go through */
- case OP_FORLOOP:
- checkreg(pt, a+2);
- /* go through */
- case OP_JMP: {
- int dest = pc+1+b;
- check(0 <= dest && dest < pt->sizecode);
- /* not full check and jump is forward and do not skip `lastpc'? */
- if (reg != NO_REG && pc < dest && dest <= lastpc)
- pc += b; /* do the jump */
- break;
- }
- case OP_CALL:
- case OP_TAILCALL: {
- if (b != 0) {
- checkreg(pt, a+b-1);
- }
- c--; /* c = num. returns */
- if (c == LUA_MULTRET) {
- check(checkopenop(pt, pc));
- }
- else if (c != 0)
- checkreg(pt, a+c-1);
- if (reg >= a) last = pc; /* affect all registers above base */
- break;
- }
- case OP_RETURN: {
- b--; /* b = num. returns */
- if (b > 0) checkreg(pt, a+b-1);
- break;
- }
- case OP_SETLIST: {
- checkreg(pt, a + (b&(LFIELDS_PER_FLUSH-1)) + 1);
- break;
- }
- case OP_CLOSURE: {
- int nup;
- check(b < pt->sizep);
- nup = pt->p[b]->nups;
- check(pc + nup < pt->sizecode);
- for (; nup>0; nup--) {
- OpCode op1 = GET_OPCODE(pt->code[pc+nup]);
- check(op1 == OP_GETUPVAL || op1 == OP_MOVE);
- }
- break;
- }
- default: break;
- }
- }
- return pt->code[last];
-}
-
-#undef check
-#undef checkjump
-#undef checkreg
-
-/* }====================================================== */
-
-
-int luaG_checkcode (const Proto *pt) {
- return luaG_symbexec(pt, pt->sizecode, NO_REG);
-}
-
-
-static const char *kname (Proto *p, int c)
-{
- c = c - MAXSTACK;
- if (c >= 0 && ttisstring(&p->k[c]))
- return svalue(&p->k[c]);
- else
- return "?";
-}
-
-
-static const char *getobjname (CallInfo *ci, int stackpos, const char **name)
-{
- if (isLua(ci)) { /* a Lua function? */
- Proto *p = ci_func(ci)->l.p;
- int pc = currentpc(ci);
- Instruction i;
- *name = luaF_getlocalname(p, stackpos+1, pc);
- if (*name) /* is a local? */
- return "local";
- i = luaG_symbexec(p, pc, stackpos); /* try symbolic execution */
- lua_assert(pc != -1);
- switch (GET_OPCODE(i)) {
- case OP_GETGLOBAL: {
- int g = GETARG_Bx(i); /* global index */
- lua_assert(ttisstring(&p->k[g]));
- *name = svalue(&p->k[g]);
- return "global";
- }
- case OP_MOVE: {
- int a = GETARG_A(i);
- int b = GETARG_B(i); /* move from `b' to `a' */
- if (b < a)
- return getobjname(ci, b, name); /* get name for `b' */
- break;
- }
- case OP_GETTABLE: {
- int k = GETARG_C(i); /* key index */
- *name = kname(p, k);
- return "field";
- }
- case OP_SELF: {
- int k = GETARG_C(i); /* key index */
- *name = kname(p, k);
- return "method";
- }
- default: break;
- }
- }
- return NULL; /* no useful name found */
-}
-
-
-static const char *getfuncname (CallInfo *ci, const char **name)
-{
- Instruction i;
- if ((isLua(ci) && ci->u.l.tailcalls > 0) || !isLua(ci - 1))
- return NULL; /* calling function is not Lua (or is unknown) */
- ci--; /* calling function */
- i = ci_func(ci)->l.p->code[currentpc(ci)];
- if (GET_OPCODE(i) == OP_CALL || GET_OPCODE(i) == OP_TAILCALL)
- return getobjname(ci, GETARG_A(i), name);
- else
- return NULL; /* no useful name can be found */
-}
-
-
-/* only ANSI way to check whether a pointer points to an array */
-static int isinstack (CallInfo *ci, const TObject *o)
-{
- StkId p;
- for (p = ci->base; p < ci->top; p++)
- if (o == p) return 1;
- return 0;
-}
-
-
-void luaG_typeerror (lua_State *L, const TObject *o, const char *op)
-{
- const char *name = NULL;
- const char *t = luaT_typenames[ttype(o)];
- const char *kind = (isinstack(L->ci, o)) ?
- getobjname(L->ci, o - L->base, &name) : NULL;
- if (kind)
- luaG_runerror(L, "attempt to %s %s `%s' (a %s value)",
- op, kind, name, t);
- else
- luaG_runerror(L, "attempt to %s a %s value", op, t);
-}
-
-
-void luaG_concaterror (lua_State *L, StkId p1, StkId p2) {
- if (ttisstring(p1)) p1 = p2;
- lua_assert(!ttisstring(p1));
- luaG_typeerror(L, p1, "concatenate");
-}
-
-
-void luaG_aritherror (lua_State *L, const TObject *p1, const TObject *p2) {
- TObject temp;
- if (luaV_tonumber(p1, &temp) == NULL)
- p2 = p1; /* first operand is wrong */
- luaG_typeerror(L, p2, "perform arithmetic on");
-}
-
-
-int luaG_ordererror (lua_State *L, const TObject *p1, const TObject *p2) {
- const char *t1 = luaT_typenames[ttype(p1)];
- const char *t2 = luaT_typenames[ttype(p2)];
- if (t1[2] == t2[2])
- luaG_runerror(L, "attempt to compare two %s values", t1);
- else
- luaG_runerror(L, "attempt to compare %s with %s", t1, t2);
- return 0;
-}
-
-
-static void addinfo (lua_State *L, const char *msg)
-{
- CallInfo *ci = L->ci;
- if (isLua(ci)) { /* is Lua code? */
- char buff[LUA_IDSIZE]; /* add file:line information */
- int line = currentline(ci);
- luaO_chunkid(buff, getstr(getluaproto(ci)->source), LUA_IDSIZE);
- luaO_pushfstring(L, "%s:%d: %s", buff, line, msg);
- }
-}
-
-
-void luaG_errormsg (lua_State *L) {
- if (L->errfunc != 0) { /* is there an error handling function? */
- StkId errfunc = restorestack(L, L->errfunc);
- if (!ttisfunction(errfunc)) luaD_throw(L, LUA_ERRERR);
- setobjs2s(L->top, L->top - 1); /* move argument */
- setobjs2s(L->top - 1, errfunc); /* push function */
- incr_top(L);
- luaD_call(L, L->top - 2, 1); /* call it */
- }
- luaD_throw(L, LUA_ERRRUN);
-}
-
-
-void luaG_runerror (lua_State *L, const char *fmt, ...) {
- va_list argp;
- va_start(argp, fmt);
- addinfo(L, luaO_pushvfstring(L, fmt, argp));
- va_end(argp);
- luaG_errormsg(L);
-}
-
+++ /dev/null
-/*
-** $Id: ldebug.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Auxiliary functions from Debug Interface module
-** See Copyright Notice in lua.h
-*/
-
-#ifndef ldebug_h
-#define ldebug_h
-
-
-#include "lstate.h"
-
-
-#define pcRel(pc, p) (cast(int, (pc) - (p)->code) - 1)
-
-#define getline(f,pc) (((f)->lineinfo) ? (f)->lineinfo[pc] : 0)
-
-#define resethookcount(L) (L->hookcount = L->basehookcount)
-
-
-void luaG_inithooks (lua_State *L);
-void luaG_typeerror (lua_State *L, const TObject *o, const char *opname);
-void luaG_concaterror (lua_State *L, StkId p1, StkId p2);
-void luaG_aritherror (lua_State *L, const TObject *p1, const TObject *p2);
-int luaG_ordererror (lua_State *L, const TObject *p1, const TObject *p2);
-void luaG_runerror (lua_State *L, const char *fmt, ...);
-void luaG_errormsg (lua_State *L);
-int luaG_checkcode (const Proto *pt);
-
-
-#endif
+++ /dev/null
-/*
-** $Id: ldo.c,v 1.3 2004/03/23 05:09:14 jbj Exp $
-** Stack and Call structure of Lua
-** See Copyright Notice in lua.h
-*/
-
-
-#include <setjmp.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define ldo_c
-
-#include "lua.h"
-
-#include "ldebug.h"
-#include "ldo.h"
-#include "lfunc.h"
-#include "lgc.h"
-#include "lmem.h"
-#include "lobject.h"
-#include "lopcodes.h"
-#include "lparser.h"
-#include "lstate.h"
-#include "lstring.h"
-#include "ltable.h"
-#include "ltm.h"
-#include "lundump.h"
-#include "lvm.h"
-#include "lzio.h"
-
-
-
-
-/*
-** {======================================================
-** Error-recovery functions (based on long jumps)
-** =======================================================
-*/
-
-
-/* chain list of long jump buffers */
-struct lua_longjmp {
- struct lua_longjmp *previous;
- jmp_buf b;
- volatile int status; /* error code */
-};
-
-
-static void seterrorobj (lua_State *L, int errcode, StkId oldtop)
-{
- switch (errcode) {
- case LUA_ERRMEM: {
- setsvalue2s(oldtop, luaS_new(L, MEMERRMSG));
- break;
- }
- case LUA_ERRERR: {
- setsvalue2s(oldtop, luaS_new(L, "error in error handling"));
- break;
- }
- case LUA_ERRSYNTAX:
- case LUA_ERRRUN: {
- setobjs2s(oldtop, L->top - 1); /* error message on current top */
- break;
- }
- }
- L->top = oldtop + 1;
-}
-
-
-void luaD_throw (lua_State *L, int errcode) {
- if (L->errorJmp) {
- L->errorJmp->status = errcode;
- longjmp(L->errorJmp->b, 1);
- }
- else {
- G(L)->panic(L);
- exit(EXIT_FAILURE);
- }
-}
-
-
-int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud) {
- struct lua_longjmp lj;
- lj.status = 0;
- lj.previous = L->errorJmp; /* chain new error handler */
- L->errorJmp = &lj;
- if (setjmp(lj.b) == 0)
- (*f)(L, ud);
- L->errorJmp = lj.previous; /* restore old error handler */
- return lj.status;
-}
-
-
-static void restore_stack_limit (lua_State *L)
-{
- L->stack_last = L->stack+L->stacksize-1;
- if (L->size_ci > LUA_MAXCALLS) { /* there was an overflow? */
- int inuse = (L->ci - L->base_ci);
- if (inuse + 1 < LUA_MAXCALLS) /* can `undo' overflow? */
- luaD_reallocCI(L, LUA_MAXCALLS);
- }
-}
-
-/* }====================================================== */
-
-
-static void correctstack (lua_State *L, TObject *oldstack)
-{
- CallInfo *ci;
- GCObject *up;
- L->top = (L->top - oldstack) + L->stack;
- for (up = L->openupval; up != NULL; up = up->gch.next)
- gcotouv(up)->v = (gcotouv(up)->v - oldstack) + L->stack;
- for (ci = L->base_ci; ci <= L->ci; ci++) {
- ci->top = (ci->top - oldstack) + L->stack;
- ci->base = (ci->base - oldstack) + L->stack;
- }
- L->base = L->ci->base;
-}
-
-
-void luaD_reallocstack (lua_State *L, int newsize) {
- TObject *oldstack = L->stack;
- luaM_reallocvector(L, L->stack, L->stacksize, newsize, TObject);
- L->stacksize = newsize;
- L->stack_last = L->stack+newsize-1-EXTRA_STACK;
- correctstack(L, oldstack);
-}
-
-
-void luaD_reallocCI (lua_State *L, int newsize) {
- CallInfo *oldci = L->base_ci;
- luaM_reallocvector(L, L->base_ci, L->size_ci, newsize, CallInfo);
- L->size_ci = cast(unsigned short, newsize);
- L->ci = (L->ci - oldci) + L->base_ci;
- L->end_ci = L->base_ci + L->size_ci;
-}
-
-
-void luaD_growstack (lua_State *L, int n) {
- if (n <= L->stacksize) /* double size is enough? */
- luaD_reallocstack(L, 2*L->stacksize);
- else
- luaD_reallocstack(L, L->stacksize + n + EXTRA_STACK);
-}
-
-
-static void luaD_growCI (lua_State *L)
-{
- if (L->size_ci > LUA_MAXCALLS) /* overflow while handling overflow? */
- luaD_throw(L, LUA_ERRERR);
- else {
- luaD_reallocCI(L, 2*L->size_ci);
- if (L->size_ci > LUA_MAXCALLS)
- luaG_runerror(L, "stack overflow");
- }
-}
-
-
-void luaD_callhook (lua_State *L, int event, int line) {
- lua_Hook hook = L->hook;
- if (hook && L->allowhook) {
- ptrdiff_t top = savestack(L, L->top);
- ptrdiff_t ci_top = savestack(L, L->ci->top);
- lua_Debug ar;
- ar.event = event;
- ar.currentline = line;
- if (event == LUA_HOOKTAILRET)
- ar.i_ci = 0; /* tail call; no debug information about it */
- else
- ar.i_ci = L->ci - L->base_ci;
- luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */
- L->ci->top = L->top + LUA_MINSTACK;
- L->allowhook = 0; /* cannot call hooks inside a hook */
- lua_unlock(L);
- (*hook)(L, &ar);
- lua_lock(L);
- lua_assert(!L->allowhook);
- L->allowhook = 1;
- L->ci->top = restorestack(L, ci_top);
- L->top = restorestack(L, top);
- }
-}
-
-
-static void adjust_varargs (lua_State *L, int nfixargs, StkId base)
-{
- int i;
- Table *htab;
- TObject nname;
- int actual = L->top - base; /* actual number of arguments */
- if (actual < nfixargs) {
- luaD_checkstack(L, nfixargs - actual);
- for (; actual < nfixargs; ++actual)
- setnilvalue(L->top++);
- }
- actual -= nfixargs; /* number of extra arguments */
- htab = luaH_new(L, actual, 1); /* create `arg' table */
- for (i=0; i<actual; i++) /* put extra arguments into `arg' table */
- setobj2n(luaH_setnum(L, htab, i+1), L->top - actual + i);
- /* store counter in field `n' */
- setsvalue(&nname, luaS_newliteral(L, "n"));
- setnvalue(luaH_set(L, htab, &nname), cast(lua_Number, actual));
- L->top -= actual; /* remove extra elements from the stack */
- sethvalue(L->top, htab);
- incr_top(L);
-}
-
-
-static StkId tryfuncTM (lua_State *L, StkId func)
-{
- const TObject *tm = luaT_gettmbyobj(L, func, TM_CALL);
- StkId p;
- ptrdiff_t funcr = savestack(L, func);
- if (!ttisfunction(tm))
- luaG_typeerror(L, func, "call");
- /* Open a hole inside the stack at `func' */
- for (p = L->top; p > func; p--) setobjs2s(p, p-1);
- incr_top(L);
- func = restorestack(L, funcr); /* previous call may change stack */
- setobj2s(func, tm); /* tag method is the new function to be called */
- return func;
-}
-
-
-StkId luaD_precall (lua_State *L, StkId func) {
- LClosure *cl;
- ptrdiff_t funcr = savestack(L, func);
- if (!ttisfunction(func)) /* `func' is not a function? */
- func = tryfuncTM(L, func); /* check the `function' tag method */
- if (L->ci + 1 == L->end_ci) luaD_growCI(L);
- else condhardstacktests(luaD_reallocCI(L, L->size_ci));
- cl = &clvalue(func)->l;
- if (!cl->isC) { /* Lua function? prepare its call */
- CallInfo *ci;
- Proto *p = cl->p;
- if (p->is_vararg) /* varargs? */
- adjust_varargs(L, p->numparams, func+1);
- luaD_checkstack(L, p->maxstacksize);
- ci = ++L->ci; /* now `enter' new function */
- L->base = L->ci->base = restorestack(L, funcr) + 1;
- ci->top = L->base + p->maxstacksize;
- ci->u.l.savedpc = p->code; /* starting point */
- ci->u.l.tailcalls = 0;
- ci->state = CI_SAVEDPC;
- while (L->top < ci->top)
- setnilvalue(L->top++);
- L->top = ci->top;
- return NULL;
- }
- else { /* if is a C function, call it */
- CallInfo *ci;
- int n;
- luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */
- ci = ++L->ci; /* now `enter' new function */
- L->base = L->ci->base = restorestack(L, funcr) + 1;
- ci->top = L->top + LUA_MINSTACK;
- ci->state = CI_C; /* a C function */
- if (L->hookmask & LUA_MASKCALL)
- luaD_callhook(L, LUA_HOOKCALL, -1);
- lua_unlock(L);
-#ifdef LUA_COMPATUPVALUES
- lua_pushupvalues(L);
-#endif
- n = (*clvalue(L->base - 1)->c.f)(L); /* do the actual call */
- lua_lock(L);
- return L->top - n;
- }
-}
-
-
-static StkId callrethooks (lua_State *L, StkId firstResult)
-{
- ptrdiff_t fr = savestack(L, firstResult); /* next call may change stack */
- luaD_callhook(L, LUA_HOOKRET, -1);
- if (!(L->ci->state & CI_C)) { /* Lua function? */
- while (L->ci->u.l.tailcalls--) /* call hook for eventual tail calls */
- luaD_callhook(L, LUA_HOOKTAILRET, -1);
- }
- return restorestack(L, fr);
-}
-
-
-void luaD_poscall (lua_State *L, int wanted, StkId firstResult) {
- StkId res;
- if (L->hookmask & LUA_MASKRET)
- firstResult = callrethooks(L, firstResult);
- res = L->base - 1; /* res == final position of 1st result */
- L->ci--;
- L->base = L->ci->base; /* restore base */
- /* move results to correct place */
- while (wanted != 0 && firstResult < L->top) {
- setobjs2s(res++, firstResult++);
- wanted--;
- }
- while (wanted-- > 0)
- setnilvalue(res++);
- L->top = res;
-}
-
-
-/*
-** Call a function (C or Lua). The function to be called is at *func.
-** The arguments are on the stack, right after the function.
-** When returns, all the results are on the stack, starting at the original
-** function position.
-*/
-void luaD_call (lua_State *L, StkId func, int nResults) {
- StkId firstResult;
- lua_assert(!(L->ci->state & CI_CALLING));
- if (++L->nCcalls >= LUA_MAXCCALLS) {
- if (L->nCcalls == LUA_MAXCCALLS)
- luaG_runerror(L, "C stack overflow");
- else if (L->nCcalls >= (LUA_MAXCCALLS + (LUA_MAXCCALLS>>3)))
- luaD_throw(L, LUA_ERRERR); /* error while handing stack error */
- }
- firstResult = luaD_precall(L, func);
- if (firstResult == NULL) /* is a Lua function? */
- firstResult = luaV_execute(L); /* call it */
- luaD_poscall(L, nResults, firstResult);
- L->nCcalls--;
- luaC_checkGC(L);
-}
-
-
-static void resume (lua_State *L, void *ud)
-{
- StkId firstResult;
- int nargs = *cast(int *, ud);
- CallInfo *ci = L->ci;
- if (ci == L->base_ci) { /* no activation record? */
- lua_assert(nargs < L->top - L->base);
- luaD_precall(L, L->top - (nargs + 1)); /* start coroutine */
- }
- else { /* inside a yield */
- lua_assert(ci->state & CI_YIELD);
- if (ci->state & CI_C) { /* `common' yield? */
- /* finish interrupted execution of `OP_CALL' */
- int nresults;
- lua_assert((ci-1)->state & CI_SAVEDPC);
- lua_assert(GET_OPCODE(*((ci-1)->u.l.savedpc - 1)) == OP_CALL ||
- GET_OPCODE(*((ci-1)->u.l.savedpc - 1)) == OP_TAILCALL);
- nresults = GETARG_C(*((ci-1)->u.l.savedpc - 1)) - 1;
- luaD_poscall(L, nresults, L->top - nargs); /* complete it */
- if (nresults >= 0) L->top = L->ci->top;
- }
- else { /* yielded inside a hook: just continue its execution */
- ci->state &= ~CI_YIELD;
- }
- }
- firstResult = luaV_execute(L);
- if (firstResult != NULL) /* return? */
- luaD_poscall(L, LUA_MULTRET, firstResult); /* finalize this coroutine */
-}
-
-
-static int resume_error (lua_State *L, const char *msg)
-{
- L->top = L->ci->base;
- setsvalue2s(L->top, luaS_new(L, msg));
- incr_top(L);
- lua_unlock(L);
- return LUA_ERRRUN;
-}
-
-
-LUA_API int lua_resume (lua_State *L, int nargs)
-{
- int status;
- lu_byte old_allowhooks;
- lua_lock(L);
- if (L->ci == L->base_ci) {
- if (nargs >= L->top - L->base)
- return resume_error(L, "cannot resume dead coroutine");
- }
- else if (!(L->ci->state & CI_YIELD)) /* not inside a yield? */
- return resume_error(L, "cannot resume non-suspended coroutine");
- old_allowhooks = L->allowhook;
- lua_assert(L->errfunc == 0 && L->nCcalls == 0);
- status = luaD_rawrunprotected(L, resume, &nargs);
- if (status != 0) { /* error? */
- L->ci = L->base_ci; /* go back to initial level */
- L->base = L->ci->base;
- L->nCcalls = 0;
- luaF_close(L, L->base); /* close eventual pending closures */
- seterrorobj(L, status, L->base);
- L->allowhook = old_allowhooks;
- restore_stack_limit(L);
- }
- lua_unlock(L);
- return status;
-}
-
-
-LUA_API int lua_yield (lua_State *L, int nresults)
-{
- CallInfo *ci;
- lua_lock(L);
- ci = L->ci;
- if (L->nCcalls > 0)
- luaG_runerror(L, "attempt to yield across metamethod/C-call boundary");
- if (ci->state & CI_C) { /* usual yield */
- if ((ci-1)->state & CI_C)
- luaG_runerror(L, "cannot yield a C function");
- if (L->top - nresults > L->base) { /* is there garbage in the stack? */
- int i;
- for (i=0; i<nresults; i++) /* move down results */
- setobjs2s(L->base + i, L->top - nresults + i);
- L->top = L->base + nresults;
- }
- } /* else it's an yield inside a hook: nothing to do */
- ci->state |= CI_YIELD;
- lua_unlock(L);
- return -1;
-}
-
-
-int luaD_pcall (lua_State *L, Pfunc func, void *u,
- ptrdiff_t old_top, ptrdiff_t ef) {
- int status;
- unsigned short oldnCcalls = L->nCcalls;
- ptrdiff_t old_ci = saveci(L, L->ci);
- lu_byte old_allowhooks = L->allowhook;
- ptrdiff_t old_errfunc = L->errfunc;
- L->errfunc = ef;
- status = luaD_rawrunprotected(L, func, u);
- if (status != 0) { /* an error occurred? */
- StkId oldtop = restorestack(L, old_top);
- luaF_close(L, oldtop); /* close eventual pending closures */
- seterrorobj(L, status, oldtop);
- L->nCcalls = oldnCcalls;
- L->ci = restoreci(L, old_ci);
- L->base = L->ci->base;
- L->allowhook = old_allowhooks;
- restore_stack_limit(L);
- }
- L->errfunc = old_errfunc;
- return status;
-}
-
-
-
-/*
-** Execute a protected parser.
-*/
-struct SParser { /* data to `f_parser' */
- ZIO *z;
- Mbuffer buff; /* buffer to be used by the scanner */
- int bin;
-};
-
-static void f_parser (lua_State *L, void *ud)
-{
- struct SParser *p;
- Proto *tf;
- Closure *cl;
- luaC_checkGC(L);
- p = cast(struct SParser *, ud);
- tf = p->bin ? luaU_undump(L, p->z, &p->buff) : luaY_parser(L, p->z, &p->buff);
- cl = luaF_newLclosure(L, 0, gt(L));
- cl->l.p = tf;
- setclvalue(L->top, cl);
- incr_top(L);
-}
-
-
-int luaD_protectedparser (lua_State *L, ZIO *z, int bin) {
- struct SParser p;
- int status;
- ptrdiff_t oldtopr = savestack(L, L->top); /* save current top */
- p.z = z; p.bin = bin;
- luaZ_initbuffer(L, &p.buff);
- status = luaD_rawrunprotected(L, f_parser, &p);
- luaZ_freebuffer(L, &p.buff);
- if (status != 0) { /* error? */
- StkId oldtop = restorestack(L, oldtopr);
- seterrorobj(L, status, oldtop);
- }
- return status;
-}
-
-
+++ /dev/null
-/*
-** $Id: ldo.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Stack and Call structure of Lua
-** See Copyright Notice in lua.h
-*/
-
-#ifndef ldo_h
-#define ldo_h
-
-
-#include "lobject.h"
-#include "lstate.h"
-#include "lzio.h"
-
-
-/*
-** macro to control inclusion of some hard tests on stack reallocation
-*/
-#ifndef HARDSTACKTESTS
-#define condhardstacktests(x) { /* empty */ }
-#else
-#define condhardstacktests(x) x
-#endif
-
-
-#define luaD_checkstack(L,n) \
- if ((char *)L->stack_last - (char *)L->top <= (n)*(int)sizeof(TObject)) \
- luaD_growstack(L, n); \
- else condhardstacktests(luaD_reallocstack(L, L->stacksize));
-
-
-#define incr_top(L) {luaD_checkstack(L,1); L->top++;}
-
-#define savestack(L,p) ((char *)(p) - (char *)L->stack)
-#define restorestack(L,n) ((TObject *)((char *)L->stack + (n)))
-
-#define saveci(L,p) ((char *)(p) - (char *)L->base_ci)
-#define restoreci(L,n) ((CallInfo *)((char *)L->base_ci + (n)))
-
-
-/* type of protected functions, to be ran by `runprotected' */
-typedef void (*Pfunc) (lua_State *L, void *ud);
-
-void luaD_resetprotection (lua_State *L);
-int luaD_protectedparser (lua_State *L, ZIO *z, int bin);
-void luaD_callhook (lua_State *L, int event, int line);
-StkId luaD_precall (lua_State *L, StkId func);
-void luaD_call (lua_State *L, StkId func, int nResults);
-int luaD_pcall (lua_State *L, Pfunc func, void *u,
- ptrdiff_t oldtop, ptrdiff_t ef);
-void luaD_poscall (lua_State *L, int wanted, StkId firstResult);
-void luaD_reallocCI (lua_State *L, int newsize);
-void luaD_reallocstack (lua_State *L, int newsize);
-void luaD_growstack (lua_State *L, int n);
-
-void luaD_throw (lua_State *L, int errcode);
-int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud);
-
-
-#endif
+++ /dev/null
-/*
-** $Id: ldump.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** save bytecodes
-** See Copyright Notice in lua.h
-*/
-
-#include <stddef.h>
-
-#define ldump_c
-
-#include "lua.h"
-
-#include "lobject.h"
-#include "lopcodes.h"
-#include "lstate.h"
-#include "lundump.h"
-
-#define DumpVector(b,n,size,D) DumpBlock(b,(n)*(size),D)
-#define DumpLiteral(s,D) DumpBlock("" s,(sizeof(s))-1,D)
-
-typedef struct {
- lua_State* L;
- lua_Chunkwriter write;
- void* data;
-} DumpState;
-
-static void DumpBlock(const void* b, size_t size, DumpState* D)
-{
- lua_unlock(D->L);
- (*D->write)(D->L,b,size,D->data);
- lua_lock(D->L);
-}
-
-static void DumpByte(int y, DumpState* D)
-{
- char x=(char)y;
- DumpBlock(&x,sizeof(x),D);
-}
-
-static void DumpInt(int x, DumpState* D)
-{
- DumpBlock(&x,sizeof(x),D);
-}
-
-static void DumpSize(size_t x, DumpState* D)
-{
- DumpBlock(&x,sizeof(x),D);
-}
-
-static void DumpNumber(lua_Number x, DumpState* D)
-{
- DumpBlock(&x,sizeof(x),D);
-}
-
-static void DumpString(TString* s, DumpState* D)
-{
- if (s==NULL || getstr(s)==NULL)
- DumpSize(0,D);
- else
- {
- size_t size=s->tsv.len+1; /* include trailing '\0' */
- DumpSize(size,D);
- DumpBlock(getstr(s),size,D);
- }
-}
-
-static void DumpCode(const Proto* f, DumpState* D)
-{
- DumpInt(f->sizecode,D);
- DumpVector(f->code,f->sizecode,sizeof(*f->code),D);
-}
-
-static void DumpLocals(const Proto* f, DumpState* D)
-{
- int i,n=f->sizelocvars;
- DumpInt(n,D);
- for (i=0; i<n; i++)
- {
- DumpString(f->locvars[i].varname,D);
- DumpInt(f->locvars[i].startpc,D);
- DumpInt(f->locvars[i].endpc,D);
- }
-}
-
-static void DumpLines(const Proto* f, DumpState* D)
-{
- DumpInt(f->sizelineinfo,D);
- DumpVector(f->lineinfo,f->sizelineinfo,sizeof(*f->lineinfo),D);
-}
-
-static void DumpUpvalues(const Proto* f, DumpState* D)
-{
- int i,n=f->sizeupvalues;
- DumpInt(n,D);
- for (i=0; i<n; i++) DumpString(f->upvalues[i],D);
-}
-
-static void DumpFunction(const Proto* f, const TString* p, DumpState* D) ;
-
-static void DumpConstants(const Proto* f, DumpState* D)
-{
- int i,n;
- DumpInt(n=f->sizek,D);
- for (i=0; i<n; i++)
- {
- const TObject* o=&f->k[i];
- DumpByte(ttype(o),D);
- switch (ttype(o))
- {
- case LUA_TNUMBER:
- DumpNumber(nvalue(o),D);
- break;
- case LUA_TSTRING:
- DumpString(tsvalue(o),D);
- break;
- case LUA_TNIL:
- break;
- default:
- lua_assert(0); /* cannot happen */
- break;
- }
- }
- DumpInt(n=f->sizep,D);
- for (i=0; i<n; i++) DumpFunction(f->p[i],f->source,D);
-}
-
-static void DumpFunction(const Proto* f, const TString* p, DumpState* D)
-{
- DumpString((f->source==p) ? NULL : f->source,D);
- DumpInt(f->lineDefined,D);
- DumpByte(f->nups,D);
- DumpByte(f->numparams,D);
- DumpByte(f->is_vararg,D);
- DumpByte(f->maxstacksize,D);
- DumpLines(f,D);
- DumpLocals(f,D);
- DumpUpvalues(f,D);
- DumpConstants(f,D);
- DumpCode(f,D);
-}
-
-static void DumpHeader(DumpState* D)
-{
- DumpLiteral(LUA_SIGNATURE,D);
- DumpByte(VERSION,D);
- DumpByte(luaU_endianness(),D);
- DumpByte(sizeof(int),D);
- DumpByte(sizeof(size_t),D);
- DumpByte(sizeof(Instruction),D);
- DumpByte(SIZE_OP,D);
- DumpByte(SIZE_A,D);
- DumpByte(SIZE_B,D);
- DumpByte(SIZE_C,D);
- DumpByte(sizeof(lua_Number),D);
- DumpNumber(TEST_NUMBER,D);
-}
-
-/*
-** dump function as precompiled chunk
-*/
-void luaU_dump (lua_State* L, const Proto* Main, lua_Chunkwriter w, void* data)
-{
- DumpState D;
- D.L=L;
- D.write=w;
- D.data=data;
- DumpHeader(&D);
- DumpFunction(Main,NULL,&D);
-}
-
+++ /dev/null
-/*
-** $Id: lfunc.c,v 1.1 2004/03/16 21:58:30 niemeyer Exp $
-** Auxiliary functions to manipulate prototypes and closures
-** See Copyright Notice in lua.h
-*/
-
-
-#include <stdlib.h>
-
-#define lfunc_c
-
-#include "lua.h"
-
-#include "lfunc.h"
-#include "lgc.h"
-#include "lmem.h"
-#include "lobject.h"
-#include "lstate.h"
-
-
-#define sizeCclosure(n) (cast(int, sizeof(CClosure)) + \
- cast(int, sizeof(TObject)*((n)-1)))
-
-#define sizeLclosure(n) (cast(int, sizeof(LClosure)) + \
- cast(int, sizeof(TObject *)*((n)-1)))
-
-
-
-Closure *luaF_newCclosure (lua_State *L, int nelems) {
- Closure *c = cast(Closure *, luaM_malloc(L, sizeCclosure(nelems)));
- luaC_link(L, valtogco(c), LUA_TFUNCTION);
- c->c.isC = 1;
- c->c.nupvalues = cast(lu_byte, nelems);
- return c;
-}
-
-
-Closure *luaF_newLclosure (lua_State *L, int nelems, TObject *e) {
- Closure *c = cast(Closure *, luaM_malloc(L, sizeLclosure(nelems)));
- luaC_link(L, valtogco(c), LUA_TFUNCTION);
- c->l.isC = 0;
- c->l.g = *e;
- c->l.nupvalues = cast(lu_byte, nelems);
- return c;
-}
-
-
-UpVal *luaF_findupval (lua_State *L, StkId level) {
- GCObject **pp = &L->openupval;
- UpVal *p;
- UpVal *v;
- while ((p = ngcotouv(*pp)) != NULL && p->v >= level) {
- if (p->v == level) return p;
- pp = &p->next;
- }
- v = luaM_new(L, UpVal); /* not found: create a new one */
- v->tt = LUA_TUPVAL;
- v->marked = 1; /* open upvalues should not be collected */
- v->v = level; /* current value lives in the stack */
- v->next = *pp; /* chain it in the proper position */
- *pp = valtogco(v);
- return v;
-}
-
-
-void luaF_close (lua_State *L, StkId level) {
- UpVal *p;
- while ((p = ngcotouv(L->openupval)) != NULL && p->v >= level) {
- setobj(&p->value, p->v); /* save current value (write barrier) */
- p->v = &p->value; /* now current value lives here */
- L->openupval = p->next; /* remove from `open' list */
- luaC_link(L, valtogco(p), LUA_TUPVAL);
- }
-}
-
-
-Proto *luaF_newproto (lua_State *L) {
- Proto *f = luaM_new(L, Proto);
- luaC_link(L, valtogco(f), LUA_TPROTO);
- f->k = NULL;
- f->sizek = 0;
- f->p = NULL;
- f->sizep = 0;
- f->code = NULL;
- f->sizecode = 0;
- f->sizelineinfo = 0;
- f->sizeupvalues = 0;
- f->nups = 0;
- f->upvalues = NULL;
- f->numparams = 0;
- f->is_vararg = 0;
- f->maxstacksize = 0;
- f->lineinfo = NULL;
- f->sizelocvars = 0;
- f->locvars = NULL;
- f->lineDefined = 0;
- f->source = NULL;
- return f;
-}
-
-
-void luaF_freeproto (lua_State *L, Proto *f) {
- luaM_freearray(L, f->code, f->sizecode, Instruction);
- luaM_freearray(L, f->p, f->sizep, Proto *);
- luaM_freearray(L, f->k, f->sizek, TObject);
- luaM_freearray(L, f->lineinfo, f->sizelineinfo, int);
- luaM_freearray(L, f->locvars, f->sizelocvars, struct LocVar);
- luaM_freearray(L, f->upvalues, f->sizeupvalues, TString *);
- luaM_freelem(L, f);
-}
-
-
-void luaF_freeclosure (lua_State *L, Closure *c) {
- int size = (c->c.isC) ? sizeCclosure(c->c.nupvalues) :
- sizeLclosure(c->l.nupvalues);
- luaM_free(L, c, size);
-}
-
-
-/*
-** Look for n-th local variable at line `line' in function `func'.
-** Returns NULL if not found.
-*/
-const char *luaF_getlocalname (const Proto *f, int local_number, int pc) {
- int i;
- for (i = 0; i<f->sizelocvars && f->locvars[i].startpc <= pc; i++) {
- if (pc < f->locvars[i].endpc) { /* is variable active? */
- local_number--;
- if (local_number == 0)
- return getstr(f->locvars[i].varname);
- }
- }
- return NULL; /* not found */
-}
-
+++ /dev/null
-/*
-** $Id: lfunc.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Auxiliary functions to manipulate prototypes and closures
-** See Copyright Notice in lua.h
-*/
-
-#ifndef lfunc_h
-#define lfunc_h
-
-
-#include "lobject.h"
-
-
-Proto *luaF_newproto (lua_State *L);
-Closure *luaF_newCclosure (lua_State *L, int nelems);
-Closure *luaF_newLclosure (lua_State *L, int nelems, TObject *e);
-UpVal *luaF_findupval (lua_State *L, StkId level);
-void luaF_close (lua_State *L, StkId level);
-void luaF_freeproto (lua_State *L, Proto *f);
-void luaF_freeclosure (lua_State *L, Closure *c);
-
-const char *luaF_getlocalname (const Proto *func, int local_number, int pc);
-
-
-#endif
+++ /dev/null
-/*
-** $Id: lgc.c,v 1.3 2004/03/23 05:09:14 jbj Exp $
-** Garbage Collector
-** See Copyright Notice in lua.h
-*/
-
-#include <string.h>
-
-#define lgc_c
-
-#include "lua.h"
-
-#include "ldebug.h"
-#include "ldo.h"
-#include "lfunc.h"
-#include "lgc.h"
-#include "lmem.h"
-#include "lobject.h"
-#include "lstate.h"
-#include "lstring.h"
-#include "ltable.h"
-#include "ltm.h"
-
-
-typedef struct GCState {
- GCObject *tmark; /* list of marked objects to be traversed */
- GCObject *wk; /* list of traversed key-weak tables (to be cleared) */
- GCObject *wv; /* list of traversed value-weak tables */
- GCObject *wkv; /* list of traversed key-value weak tables */
- global_State *g;
-} GCState;
-
-
-/*
-** some userful bit tricks
-*/
-#define setbit(x,b) ((x) |= (1<<(b)))
-#define resetbit(x,b) ((x) &= cast(lu_byte, ~(1<<(b))))
-#define testbit(x,b) ((x) & (1<<(b)))
-
-#define unmark(x) resetbit((x)->gch.marked, 0)
-#define ismarked(x) ((x)->gch.marked & ((1<<4)|1))
-
-#define stringmark(s) setbit((s)->tsv.marked, 0)
-
-
-#define isfinalized(u) (!testbit((u)->uv.marked, 1))
-#define markfinalized(u) resetbit((u)->uv.marked, 1)
-
-
-#define KEYWEAKBIT 1
-#define VALUEWEAKBIT 2
-#define KEYWEAK (1<<KEYWEAKBIT)
-#define VALUEWEAK (1<<VALUEWEAKBIT)
-
-
-
-#define markobject(st,o) { checkconsistency(o); \
- if (iscollectable(o) && !ismarked(gcvalue(o))) reallymarkobject(st,gcvalue(o)); }
-
-#define condmarkobject(st,o,c) { checkconsistency(o); \
- if (iscollectable(o) && !ismarked(gcvalue(o)) && (c)) \
- reallymarkobject(st,gcvalue(o)); }
-
-#define markvalue(st,t) { if (!ismarked(valtogco(t))) \
- reallymarkobject(st, valtogco(t)); }
-
-
-
-static void reallymarkobject (GCState *st, GCObject *o)
-{
- lua_assert(!ismarked(o));
- setbit(o->gch.marked, 0); /* mark object */
- switch (o->gch.tt) {
- case LUA_TUSERDATA: {
- markvalue(st, gcotou(o)->uv.metatable);
- break;
- }
- case LUA_TFUNCTION: {
- gcotocl(o)->c.gclist = st->tmark;
- st->tmark = o;
- break;
- }
- case LUA_TTABLE: {
- gcotoh(o)->gclist = st->tmark;
- st->tmark = o;
- break;
- }
- case LUA_TTHREAD: {
- gcototh(o)->gclist = st->tmark;
- st->tmark = o;
- break;
- }
- case LUA_TPROTO: {
- gcotop(o)->gclist = st->tmark;
- st->tmark = o;
- break;
- }
- default: lua_assert(o->gch.tt == LUA_TSTRING);
- }
-}
-
-
-static void marktmu (GCState *st)
-{
- GCObject *u;
- for (u = st->g->tmudata; u; u = u->gch.next) {
- unmark(u); /* may be marked, if left from previous GC */
- reallymarkobject(st, u);
- }
-}
-
-
-/* move `dead' udata that need finalization to list `tmudata' */
-size_t luaC_separateudata (lua_State *L) {
- size_t deadmem = 0;
- GCObject **p = &G(L)->rootudata;
- GCObject *curr;
- GCObject *collected = NULL; /* to collect udata with gc event */
- GCObject **lastcollected = &collected;
- while ((curr = *p) != NULL) {
- lua_assert(curr->gch.tt == LUA_TUSERDATA);
- if (ismarked(curr) || isfinalized(gcotou(curr)))
- p = &curr->gch.next; /* don't bother with them */
-
- else if (fasttm(L, gcotou(curr)->uv.metatable, TM_GC) == NULL) {
- markfinalized(gcotou(curr)); /* don't need finalization */
- p = &curr->gch.next;
- }
- else { /* must call its gc method */
- deadmem += sizeudata(gcotou(curr)->uv.len);
- *p = curr->gch.next;
- curr->gch.next = NULL; /* link `curr' at the end of `collected' list */
- *lastcollected = curr;
- lastcollected = &curr->gch.next;
- }
- }
- /* insert collected udata with gc event into `tmudata' list */
- *lastcollected = G(L)->tmudata;
- G(L)->tmudata = collected;
- return deadmem;
-}
-
-
-static void removekey (Node *n)
-{
- setnilvalue(gval(n)); /* remove corresponding value ... */
- if (iscollectable(gkey(n)))
- setttype(gkey(n), LUA_TNONE); /* dead key; remove it */
-}
-
-
-static void traversetable (GCState *st, Table *h)
-{
- int i;
- int weakkey = 0;
- int weakvalue = 0;
- const TObject *mode;
- markvalue(st, h->metatable);
- lua_assert(h->lsizenode || h->node == st->g->dummynode);
- mode = gfasttm(st->g, h->metatable, TM_MODE);
- if (mode && ttisstring(mode)) { /* is there a weak mode? */
- weakkey = (strchr(svalue(mode), 'k') != NULL);
- weakvalue = (strchr(svalue(mode), 'v') != NULL);
- if (weakkey || weakvalue) { /* is really weak? */
- GCObject **weaklist;
- h->marked &= ~(KEYWEAK | VALUEWEAK); /* clear bits */
- h->marked |= cast(lu_byte, (weakkey << KEYWEAKBIT) |
- (weakvalue << VALUEWEAKBIT));
- weaklist = (weakkey && weakvalue) ? &st->wkv :
- (weakkey) ? &st->wk :
- &st->wv;
- h->gclist = *weaklist; /* must be cleared after GC, ... */
- *weaklist = valtogco(h); /* ... so put in the appropriate list */
- }
- }
- if (!weakvalue) {
- i = h->sizearray;
- while (i--)
- markobject(st, &h->array[i]);
- }
- i = sizenode(h);
- while (i--) {
- Node *n = gnode(h, i);
- if (!ttisnil(gval(n))) {
- lua_assert(!ttisnil(gkey(n)));
- condmarkobject(st, gkey(n), !weakkey);
- condmarkobject(st, gval(n), !weakvalue);
- }
- }
-}
-
-
-static void traverseproto (GCState *st, Proto *f)
-{
- int i;
- stringmark(f->source);
- for (i=0; i<f->sizek; i++) { /* mark literal strings */
- if (ttisstring(f->k+i))
- stringmark(tsvalue(f->k+i));
- }
- for (i=0; i<f->sizeupvalues; i++) /* mark upvalue names */
- stringmark(f->upvalues[i]);
- for (i=0; i<f->sizep; i++) /* mark nested protos */
- markvalue(st, f->p[i]);
- for (i=0; i<f->sizelocvars; i++) /* mark local-variable names */
- stringmark(f->locvars[i].varname);
- lua_assert(luaG_checkcode(f));
-}
-
-
-
-static void traverseclosure (GCState *st, Closure *cl)
-{
- if (cl->c.isC) {
- int i;
- for (i=0; i<cl->c.nupvalues; i++) /* mark its upvalues */
- markobject(st, &cl->c.upvalue[i]);
- }
- else {
- int i;
- lua_assert(cl->l.nupvalues == cl->l.p->nups);
- markvalue(st, hvalue(&cl->l.g));
- markvalue(st, cl->l.p);
- for (i=0; i<cl->l.nupvalues; i++) { /* mark its upvalues */
- UpVal *u = cl->l.upvals[i];
- if (!u->marked) {
- markobject(st, &u->value);
- u->marked = 1;
- }
- }
- }
-}
-
-
-static void checkstacksizes (lua_State *L, StkId max)
-{
- int used = L->ci - L->base_ci; /* number of `ci' in use */
- if (4*used < L->size_ci && 2*BASIC_CI_SIZE < L->size_ci)
- luaD_reallocCI(L, L->size_ci/2); /* still big enough... */
- else condhardstacktests(luaD_reallocCI(L, L->size_ci));
- used = max - L->stack; /* part of stack in use */
- if (4*used < L->stacksize && 2*(BASIC_STACK_SIZE+EXTRA_STACK) < L->stacksize)
- luaD_reallocstack(L, L->stacksize/2); /* still big enough... */
- else condhardstacktests(luaD_reallocstack(L, L->stacksize));
-}
-
-
-static void traversestack (GCState *st, lua_State *L1)
-{
- StkId o, lim;
- CallInfo *ci;
- markobject(st, gt(L1));
- lim = L1->top;
- for (ci = L1->base_ci; ci <= L1->ci; ci++) {
- lua_assert(ci->top <= L1->stack_last);
- lua_assert(ci->state & (CI_C | CI_HASFRAME | CI_SAVEDPC));
- if (lim < ci->top)
- lim = ci->top;
- }
- for (o = L1->stack; o < L1->top; o++)
- markobject(st, o);
- for (; o <= lim; o++)
- setnilvalue(o);
- checkstacksizes(L1, lim);
-}
-
-
-static void propagatemarks (GCState *st)
-{
- while (st->tmark) { /* traverse marked objects */
- switch (st->tmark->gch.tt) {
- case LUA_TTABLE: {
- Table *h = gcotoh(st->tmark);
- st->tmark = h->gclist;
- traversetable(st, h);
- break;
- }
- case LUA_TFUNCTION: {
- Closure *cl = gcotocl(st->tmark);
- st->tmark = cl->c.gclist;
- traverseclosure(st, cl);
- break;
- }
- case LUA_TTHREAD: {
- lua_State *th = gcototh(st->tmark);
- st->tmark = th->gclist;
- traversestack(st, th);
- break;
- }
- case LUA_TPROTO: {
- Proto *p = gcotop(st->tmark);
- st->tmark = p->gclist;
- traverseproto(st, p);
- break;
- }
- default: lua_assert(0);
- }
- }
-}
-
-
-static int valismarked (const TObject *o)
-{
- if (ttisstring(o))
- stringmark(tsvalue(o)); /* strings are `values', so are never weak */
- return !iscollectable(o) || testbit(o->value.gc->gch.marked, 0);
-}
-
-
-/*
-** clear collected keys from weaktables
-*/
-static void cleartablekeys (GCObject *l)
-{
- while (l) {
- Table *h = gcotoh(l);
- int i = sizenode(h);
- lua_assert(h->marked & KEYWEAK);
- while (i--) {
- Node *n = gnode(h, i);
- if (!valismarked(gkey(n))) /* key was collected? */
- removekey(n); /* remove entry from table */
- }
- l = h->gclist;
- }
-}
-
-
-/*
-** clear collected values from weaktables
-*/
-static void cleartablevalues (GCObject *l)
-{
- while (l) {
- Table *h = gcotoh(l);
- int i = h->sizearray;
- lua_assert(h->marked & VALUEWEAK);
- while (i--) {
- TObject *o = &h->array[i];
- if (!valismarked(o)) /* value was collected? */
- setnilvalue(o); /* remove value */
- }
- i = sizenode(h);
- while (i--) {
- Node *n = gnode(h, i);
- if (!valismarked(gval(n))) /* value was collected? */
- removekey(n); /* remove entry from table */
- }
- l = h->gclist;
- }
-}
-
-
-static void freeobj (lua_State *L, GCObject *o)
-{
- switch (o->gch.tt) {
- case LUA_TPROTO: luaF_freeproto(L, gcotop(o)); break;
- case LUA_TFUNCTION: luaF_freeclosure(L, gcotocl(o)); break;
- case LUA_TUPVAL: luaM_freelem(L, gcotouv(o)); break;
- case LUA_TTABLE: luaH_free(L, gcotoh(o)); break;
- case LUA_TTHREAD: {
- lua_assert(gcototh(o) != L && gcototh(o) != G(L)->mainthread);
- luaE_freethread(L, gcototh(o));
- break;
- }
- case LUA_TSTRING: {
- luaM_free(L, o, sizestring(gcotots(o)->tsv.len));
- break;
- }
- case LUA_TUSERDATA: {
- luaM_free(L, o, sizeudata(gcotou(o)->uv.len));
- break;
- }
- default: lua_assert(0);
- }
-}
-
-
-static int sweeplist (lua_State *L, GCObject **p, int limit)
-{
- GCObject *curr;
- int count = 0; /* number of collected items */
- while ((curr = *p) != NULL) {
- if (curr->gch.marked > limit) {
- unmark(curr);
- p = &curr->gch.next;
- }
- else {
- count++;
- *p = curr->gch.next;
- freeobj(L, curr);
- }
- }
- return count;
-}
-
-
-static void sweepstrings (lua_State *L, int all)
-{
- int i;
- for (i=0; i<G(L)->strt.size; i++) { /* for each list */
- G(L)->strt.nuse -= sweeplist(L, &G(L)->strt.hash[i], all);
- }
-}
-
-
-static void checkSizes (lua_State *L, size_t deadmem)
-{
- /* check size of string hash */
- if (G(L)->strt.nuse < cast(ls_nstr, G(L)->strt.size/4) &&
- G(L)->strt.size > MINSTRTABSIZE*2)
- luaS_resize(L, G(L)->strt.size/2); /* table is too big */
- /* check size of buffer */
- if (luaZ_sizebuffer(&G(L)->buff) > LUA_MINBUFFER*2) { /* buffer too big? */
- size_t newsize = luaZ_sizebuffer(&G(L)->buff) / 2;
- luaZ_resizebuffer(L, &G(L)->buff, newsize);
- }
- G(L)->GCthreshold = 2*G(L)->nblocks - deadmem; /* new threshold */
-}
-
-
-static void do1gcTM (lua_State *L, Udata *udata)
-{
- const TObject *tm = fasttm(L, udata->uv.metatable, TM_GC);
- if (tm != NULL) {
- setobj2s(L->top, tm);
- setuvalue(L->top+1, udata);
- L->top += 2;
- luaD_call(L, L->top - 2, 0);
- }
-}
-
-
-void luaC_callGCTM (lua_State *L) {
- lu_byte oldah = L->allowhook;
- L->allowhook = 0; /* stop debug hooks during GC tag methods */
- L->top++; /* reserve space to keep udata while runs its gc method */
- while (G(L)->tmudata != NULL) {
- GCObject *o = G(L)->tmudata;
- Udata *udata = gcotou(o);
- G(L)->tmudata = udata->uv.next; /* remove udata from `tmudata' */
- udata->uv.next = G(L)->rootudata; /* return it to `root' list */
- G(L)->rootudata = o;
- setuvalue(L->top - 1, udata); /* keep a reference to it */
- unmark(o);
- markfinalized(udata);
- do1gcTM(L, udata);
- }
- L->top--;
- L->allowhook = oldah; /* restore hooks */
-}
-
-
-void luaC_sweep (lua_State *L, int all) {
- if (all) all = 256; /* larger than any mark */
- sweeplist(L, &G(L)->rootudata, all);
- sweepstrings(L, all);
- sweeplist(L, &G(L)->rootgc, all);
-}
-
-
-/* mark root set */
-static void markroot (GCState *st, lua_State *L)
-{
- global_State *g = st->g;
- markobject(st, defaultmeta(L));
- markobject(st, registry(L));
- traversestack(st, g->mainthread);
- if (L != g->mainthread) /* another thread is running? */
- markvalue(st, L); /* cannot collect it */
-}
-
-
-static size_t mark (lua_State *L)
-{
- size_t deadmem;
- GCState st;
- GCObject *wkv;
- st.g = G(L);
- st.tmark = NULL;
- st.wkv = st.wk = st.wv = NULL;
- markroot(&st, L);
- propagatemarks(&st); /* mark all reachable objects */
- cleartablevalues(st.wkv);
- cleartablevalues(st.wv);
- wkv = st.wkv; /* keys must be cleared after preserving udata */
- st.wkv = NULL;
- st.wv = NULL;
- deadmem = luaC_separateudata(L); /* separate userdata to be preserved */
- marktmu(&st); /* mark `preserved' userdata */
- propagatemarks(&st); /* remark, to propagate `preserveness' */
- cleartablekeys(wkv);
- /* `propagatemarks' may resuscitate some weak tables; clear them too */
- cleartablekeys(st.wk);
- cleartablevalues(st.wv);
- cleartablekeys(st.wkv);
- cleartablevalues(st.wkv);
- return deadmem;
-}
-
-
-void luaC_collectgarbage (lua_State *L) {
- size_t deadmem = mark(L);
- luaC_sweep(L, 0);
- checkSizes(L, deadmem);
- luaC_callGCTM(L);
-}
-
-
-void luaC_link (lua_State *L, GCObject *o, lu_byte tt) {
- o->gch.next = G(L)->rootgc;
- G(L)->rootgc = o;
- o->gch.marked = 0;
- o->gch.tt = tt;
-}
-
+++ /dev/null
-/*
-** $Id: lgc.h,v 1.3 2004/03/23 05:09:14 jbj Exp $
-** Garbage Collector
-** See Copyright Notice in lua.h
-*/
-
-#ifndef lgc_h
-#define lgc_h
-
-
-#include "lobject.h"
-
-
-#define luaC_checkGC(L) { lua_assert(!(L->ci->state & CI_CALLING)); \
- if (G(L)->nblocks >= G(L)->GCthreshold) luaC_collectgarbage(L); }
-
-
-size_t luaC_separateudata (lua_State *L);
-void luaC_callGCTM (lua_State *L);
-void luaC_sweep (lua_State *L, int all);
-void luaC_collectgarbage (lua_State *L);
-void luaC_link (lua_State *L, GCObject *o, lu_byte tt);
-
-
-#endif
+++ /dev/null
-This is the standard Lua library.
-
-The code of the standard library can be read as an example of how to export
-C functions to Lua. The easiest library to read is lmathlib.c.
-
-The library is implemented entirely on top of the official Lua API as declared
-in lua.h, using lauxlib.c, which contains several useful functions for writing
-libraries. We encourage developers to use lauxlib.c in their own libraries.
+++ /dev/null
-/*
-** $Id: lauxlib.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Auxiliary functions for building Lua libraries
-** See Copyright Notice in lua.h
-*/
-
-
-#include <ctype.h>
-#include <errno.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <string.h>
-
-
-/* This file uses only the official API of Lua.
-** Any function declared here could be written as an application function.
-*/
-
-#define lauxlib_c
-
-#include "lua.h"
-
-#include "lauxlib.h"
-
-
-/* number of prereserved references (for internal use) */
-#define RESERVED_REFS 2
-
-/* reserved references */
-#define FREELIST_REF 1 /* free list of references */
-#define ARRAYSIZE_REF 2 /* array sizes */
-
-
-/* convert a stack index to positive */
-#define abs_index(L, i) ((i) > 0 || (i) <= LUA_REGISTRYINDEX ? (i) : \
- lua_gettop(L) + (i) + 1)
-
-
-/*
-** {======================================================
-** Error-report functions
-** =======================================================
-*/
-
-
-LUALIB_API int luaL_argerror (lua_State *L, int narg, const char *extramsg) {
- lua_Debug ar;
- lua_getstack(L, 0, &ar);
- lua_getinfo(L, "n", &ar);
- if (strcmp(ar.namewhat, "method") == 0) {
- narg--; /* do not count `self' */
- if (narg == 0) /* error is in the self argument itself? */
- return luaL_error(L, "calling `%s' on bad self (%s)", ar.name, extramsg);
- }
- if (ar.name == NULL)
- ar.name = "?";
- return luaL_error(L, "bad argument #%d to `%s' (%s)",
- narg, ar.name, extramsg);
-}
-
-
-LUALIB_API int luaL_typerror (lua_State *L, int narg, const char *tname) {
- const char *msg = lua_pushfstring(L, "%s expected, got %s",
- tname, lua_typename(L, lua_type(L,narg)));
- return luaL_argerror(L, narg, msg);
-}
-
-
-static void tag_error (lua_State *L, int narg, int tag)
-{
- luaL_typerror(L, narg, lua_typename(L, tag));
-}
-
-
-LUALIB_API void luaL_where (lua_State *L, int level) {
- lua_Debug ar;
- if (lua_getstack(L, level, &ar)) { /* check function at level */
- lua_getinfo(L, "Snl", &ar); /* get info about it */
- if (ar.currentline > 0) { /* is there info? */
- lua_pushfstring(L, "%s:%d: ", ar.short_src, ar.currentline);
- return;
- }
- }
- lua_pushliteral(L, ""); /* else, no information available... */
-}
-
-
-LUALIB_API int luaL_error (lua_State *L, const char *fmt, ...) {
- va_list argp;
- va_start(argp, fmt);
- luaL_where(L, 1);
- lua_pushvfstring(L, fmt, argp);
- va_end(argp);
- lua_concat(L, 2);
- return lua_error(L);
-}
-
-/* }====================================================== */
-
-
-LUALIB_API int luaL_findstring (const char *name, const char *const list[]) {
- int i;
- for (i=0; list[i]; i++)
- if (strcmp(list[i], name) == 0)
- return i;
- return -1; /* name not found */
-}
-
-
-LUALIB_API int luaL_newmetatable (lua_State *L, const char *tname) {
- lua_pushstring(L, tname);
- lua_rawget(L, LUA_REGISTRYINDEX); /* get registry.name */
- if (!lua_isnil(L, -1)) /* name already in use? */
- return 0; /* leave previous value on top, but return 0 */
- lua_pop(L, 1);
- lua_newtable(L); /* create metatable */
- lua_pushstring(L, tname);
- lua_pushvalue(L, -2);
- lua_rawset(L, LUA_REGISTRYINDEX); /* registry.name = metatable */
- lua_pushvalue(L, -1);
- lua_pushstring(L, tname);
- lua_rawset(L, LUA_REGISTRYINDEX); /* registry[metatable] = name */
- return 1;
-}
-
-
-LUALIB_API void luaL_getmetatable (lua_State *L, const char *tname) {
- lua_pushstring(L, tname);
- lua_rawget(L, LUA_REGISTRYINDEX);
-}
-
-
-LUALIB_API void *luaL_checkudata (lua_State *L, int ud, const char *tname) {
- const char *tn;
- if (!lua_getmetatable(L, ud)) return NULL; /* no metatable? */
- lua_rawget(L, LUA_REGISTRYINDEX); /* get registry[metatable] */
- tn = lua_tostring(L, -1);
- if (tn && (strcmp(tn, tname) == 0)) {
- lua_pop(L, 1);
- return lua_touserdata(L, ud);
- }
- else {
- lua_pop(L, 1);
- return NULL;
- }
-}
-
-
-LUALIB_API void luaL_checkstack (lua_State *L, int space, const char *mes) {
- if (!lua_checkstack(L, space))
- luaL_error(L, "stack overflow (%s)", mes);
-}
-
-
-LUALIB_API void luaL_checktype (lua_State *L, int narg, int t) {
- if (lua_type(L, narg) != t)
- tag_error(L, narg, t);
-}
-
-
-LUALIB_API void luaL_checkany (lua_State *L, int narg) {
- if (lua_type(L, narg) == LUA_TNONE)
- luaL_argerror(L, narg, "value expected");
-}
-
-
-LUALIB_API const char *luaL_checklstring (lua_State *L, int narg, size_t *len) {
- const char *s = lua_tostring(L, narg);
- if (!s) tag_error(L, narg, LUA_TSTRING);
- if (len) *len = lua_strlen(L, narg);
- return s;
-}
-
-
-LUALIB_API const char *luaL_optlstring (lua_State *L, int narg,
- const char *def, size_t *len) {
- if (lua_isnoneornil(L, narg)) {
- if (len)
- *len = (def ? strlen(def) : 0);
- return def;
- }
- else return luaL_checklstring(L, narg, len);
-}
-
-
-LUALIB_API lua_Number luaL_checknumber (lua_State *L, int narg) {
- lua_Number d = lua_tonumber(L, narg);
- if (d == 0 && !lua_isnumber(L, narg)) /* avoid extra test when d is not 0 */
- tag_error(L, narg, LUA_TNUMBER);
- return d;
-}
-
-
-LUALIB_API lua_Number luaL_optnumber (lua_State *L, int narg, lua_Number def) {
- if (lua_isnoneornil(L, narg)) return def;
- else return luaL_checknumber(L, narg);
-}
-
-
-LUALIB_API int luaL_getmetafield (lua_State *L, int obj, const char *event) {
- if (!lua_getmetatable(L, obj)) /* no metatable? */
- return 0;
- lua_pushstring(L, event);
- lua_rawget(L, -2);
- if (lua_isnil(L, -1)) {
- lua_pop(L, 2); /* remove metatable and metafield */
- return 0;
- }
- else {
- lua_remove(L, -2); /* remove only metatable */
- return 1;
- }
-}
-
-
-LUALIB_API int luaL_callmeta (lua_State *L, int obj, const char *event) {
- obj = abs_index(L, obj);
- if (!luaL_getmetafield(L, obj, event)) /* no metafield? */
- return 0;
- lua_pushvalue(L, obj);
- lua_call(L, 1, 1);
- return 1;
-}
-
-
-LUALIB_API void luaL_openlib (lua_State *L, const char *libname,
- const luaL_reg *l, int nup) {
- if (libname) {
- lua_pushstring(L, libname);
- lua_gettable(L, LUA_GLOBALSINDEX); /* check whether lib already exists */
- if (lua_isnil(L, -1)) { /* no? */
- lua_pop(L, 1);
- lua_newtable(L); /* create it */
- lua_pushstring(L, libname);
- lua_pushvalue(L, -2);
- lua_settable(L, LUA_GLOBALSINDEX); /* register it with given name */
- }
- lua_insert(L, -(nup+1)); /* move library table to below upvalues */
- }
- for (; l->name; l++) {
- int i;
- lua_pushstring(L, l->name);
- for (i=0; i<nup; i++) /* copy upvalues to the top */
- lua_pushvalue(L, -(nup+1));
- lua_pushcclosure(L, l->func, nup);
- lua_settable(L, -(nup+3));
- }
- lua_pop(L, nup); /* remove upvalues */
-}
-
-
-
-/*
-** {======================================================
-** getn-setn: size for arrays
-** =======================================================
-*/
-
-static int checkint (lua_State *L, int topop)
-{
- int n = (int)lua_tonumber(L, -1);
- if (n == 0 && !lua_isnumber(L, -1)) n = -1;
- lua_pop(L, topop);
- return n;
-}
-
-
-static void getsizes (lua_State *L)
-{
- lua_rawgeti(L, LUA_REGISTRYINDEX, ARRAYSIZE_REF);
- if (lua_isnil(L, -1)) { /* no `size' table? */
- lua_pop(L, 1); /* remove nil */
- lua_newtable(L); /* create it */
- lua_pushvalue(L, -1); /* `size' will be its own metatable */
- lua_setmetatable(L, -2);
- lua_pushliteral(L, "__mode");
- lua_pushliteral(L, "k");
- lua_rawset(L, -3); /* metatable(N).__mode = "k" */
- lua_pushvalue(L, -1);
- lua_rawseti(L, LUA_REGISTRYINDEX, ARRAYSIZE_REF); /* store in register */
- }
-}
-
-
-void luaL_setn (lua_State *L, int t, int n) {
- t = abs_index(L, t);
- lua_pushliteral(L, "n");
- lua_rawget(L, t);
- if (checkint(L, 1) >= 0) { /* is there a numeric field `n'? */
- lua_pushliteral(L, "n"); /* use it */
- lua_pushnumber(L, (lua_Number)n);
- lua_rawset(L, t);
- }
- else { /* use `sizes' */
- getsizes(L);
- lua_pushvalue(L, t);
- lua_pushnumber(L, (lua_Number)n);
- lua_rawset(L, -3); /* sizes[t] = n */
- lua_pop(L, 1); /* remove `sizes' */
- }
-}
-
-
-int luaL_getn (lua_State *L, int t) {
- int n;
- t = abs_index(L, t);
- lua_pushliteral(L, "n"); /* try t.n */
- lua_rawget(L, t);
- if ((n = checkint(L, 1)) >= 0) return n;
- getsizes(L); /* else try sizes[t] */
- lua_pushvalue(L, t);
- lua_rawget(L, -2);
- if ((n = checkint(L, 2)) >= 0) return n;
- for (n = 1; ; n++) { /* else must count elements */
- lua_rawgeti(L, t, n);
- if (lua_isnil(L, -1)) break;
- lua_pop(L, 1);
- }
- lua_pop(L, 1);
- return n - 1;
-}
-
-/* }====================================================== */
-
-
-
-/*
-** {======================================================
-** Generic Buffer manipulation
-** =======================================================
-*/
-
-
-#define bufflen(B) ((B)->p - (B)->buffer)
-#define bufffree(B) ((size_t)(LUAL_BUFFERSIZE - bufflen(B)))
-
-#define LIMIT (LUA_MINSTACK/2)
-
-
-static int emptybuffer (luaL_Buffer *B)
-{
- size_t l = bufflen(B);
- if (l == 0) return 0; /* put nothing on stack */
- else {
- lua_pushlstring(B->L, B->buffer, l);
- B->p = B->buffer;
- B->lvl++;
- return 1;
- }
-}
-
-
-static void adjuststack (luaL_Buffer *B)
-{
- if (B->lvl > 1) {
- lua_State *L = B->L;
- int toget = 1; /* number of levels to concat */
- size_t toplen = lua_strlen(L, -1);
- do {
- size_t l = lua_strlen(L, -(toget+1));
- if (B->lvl - toget + 1 >= LIMIT || toplen > l) {
- toplen += l;
- toget++;
- }
- else break;
- } while (toget < B->lvl);
- lua_concat(L, toget);
- B->lvl = B->lvl - toget + 1;
- }
-}
-
-
-LUALIB_API char *luaL_prepbuffer (luaL_Buffer *B) {
- if (emptybuffer(B))
- adjuststack(B);
- return B->buffer;
-}
-
-
-LUALIB_API void luaL_addlstring (luaL_Buffer *B, const char *s, size_t l) {
- while (l--)
- luaL_putchar(B, *s++);
-}
-
-
-LUALIB_API void luaL_addstring (luaL_Buffer *B, const char *s) {
- luaL_addlstring(B, s, strlen(s));
-}
-
-
-LUALIB_API void luaL_pushresult (luaL_Buffer *B) {
- emptybuffer(B);
- lua_concat(B->L, B->lvl);
- B->lvl = 1;
-}
-
-
-LUALIB_API void luaL_addvalue (luaL_Buffer *B) {
- lua_State *L = B->L;
- size_t vl = lua_strlen(L, -1);
- if (vl <= bufffree(B)) { /* fit into buffer? */
- memcpy(B->p, lua_tostring(L, -1), vl); /* put it there */
- B->p += vl;
- lua_pop(L, 1); /* remove from stack */
- }
- else {
- if (emptybuffer(B))
- lua_insert(L, -2); /* put buffer before new value */
- B->lvl++; /* add new value into B stack */
- adjuststack(B);
- }
-}
-
-
-LUALIB_API void luaL_buffinit (lua_State *L, luaL_Buffer *B) {
- B->L = L;
- B->p = B->buffer;
- B->lvl = 0;
-}
-
-/* }====================================================== */
-
-
-LUALIB_API int luaL_ref (lua_State *L, int t) {
- int ref;
- t = abs_index(L, t);
- if (lua_isnil(L, -1)) {
- lua_pop(L, 1); /* remove from stack */
- return LUA_REFNIL; /* `nil' has a unique fixed reference */
- }
- lua_rawgeti(L, t, FREELIST_REF); /* get first free element */
- ref = (int)lua_tonumber(L, -1); /* ref = t[FREELIST_REF] */
- lua_pop(L, 1); /* remove it from stack */
- if (ref != 0) { /* any free element? */
- lua_rawgeti(L, t, ref); /* remove it from list */
- lua_rawseti(L, t, FREELIST_REF); /* (t[FREELIST_REF] = t[ref]) */
- }
- else { /* no free elements */
- ref = luaL_getn(L, t);
- if (ref < RESERVED_REFS)
- ref = RESERVED_REFS; /* skip reserved references */
- ref++; /* create new reference */
- luaL_setn(L, t, ref);
- }
- lua_rawseti(L, t, ref);
- return ref;
-}
-
-
-LUALIB_API void luaL_unref (lua_State *L, int t, int ref) {
- if (ref >= 0) {
- t = abs_index(L, t);
- lua_rawgeti(L, t, FREELIST_REF);
- lua_rawseti(L, t, ref); /* t[ref] = t[FREELIST_REF] */
- lua_pushnumber(L, (lua_Number)ref);
- lua_rawseti(L, t, FREELIST_REF); /* t[FREELIST_REF] = ref */
- }
-}
-
-
-
-/*
-** {======================================================
-** Load functions
-** =======================================================
-*/
-
-typedef struct LoadF {
- FILE *f;
- char buff[LUAL_BUFFERSIZE];
-} LoadF;
-
-
-static const char *getF (lua_State *L, void *ud, size_t *size)
-{
- LoadF *lf = (LoadF *)ud;
- (void)L;
- if (feof(lf->f)) return NULL;
- *size = fread(lf->buff, 1, LUAL_BUFFERSIZE, lf->f);
- return (*size > 0) ? lf->buff : NULL;
-}
-
-
-static int errfile (lua_State *L, int fnameindex)
-{
- const char *filename = lua_tostring(L, fnameindex) + 1;
- lua_pushfstring(L, "cannot read %s: %s", filename, strerror(errno));
- lua_remove(L, fnameindex);
- return LUA_ERRFILE;
-}
-
-
-LUALIB_API int luaL_loadfile (lua_State *L, const char *filename) {
- LoadF lf;
- int status, readstatus;
- int c;
- int fnameindex = lua_gettop(L) + 1; /* index of filename on the stack */
- if (filename == NULL) {
- lua_pushliteral(L, "=stdin");
- lf.f = stdin;
- }
- else {
- lua_pushfstring(L, "@%s", filename);
- lf.f = fopen(filename, "r");
- }
- if (lf.f == NULL) return errfile(L, fnameindex); /* unable to open file */
- c = ungetc(getc(lf.f), lf.f);
- if (!(isspace(c) || isprint(c)) && lf.f != stdin) { /* binary file? */
- fclose(lf.f);
- lf.f = fopen(filename, "rb"); /* reopen in binary mode */
- if (lf.f == NULL) return errfile(L, fnameindex); /* unable to reopen file */
- }
- status = lua_load(L, getF, &lf, lua_tostring(L, -1));
- readstatus = ferror(lf.f);
- if (lf.f != stdin) fclose(lf.f); /* close file (even in case of errors) */
- if (readstatus) {
- lua_settop(L, fnameindex); /* ignore results from `lua_load' */
- return errfile(L, fnameindex);
- }
- lua_remove(L, fnameindex);
- return status;
-}
-
-
-typedef struct LoadS {
- const char *s;
- size_t size;
-} LoadS;
-
-
-static const char *getS (lua_State *L, void *ud, size_t *size)
-{
- LoadS *ls = (LoadS *)ud;
- (void)L;
- if (ls->size == 0) return NULL;
- *size = ls->size;
- ls->size = 0;
- return ls->s;
-}
-
-
-LUALIB_API int luaL_loadbuffer (lua_State *L, const char *buff, size_t size,
- const char *name) {
- LoadS ls;
- ls.s = buff;
- ls.size = size;
- return lua_load(L, getS, &ls, name);
-}
-
-/* }====================================================== */
-
-
-/*
-** {======================================================
-** compatibility code
-** =======================================================
-*/
-
-
-static void callalert (lua_State *L, int status)
-{
- if (status != 0) {
- lua_getglobal(L, "_ALERT");
- if (lua_isfunction(L, -1)) {
- lua_insert(L, -2);
- lua_call(L, 1, 0);
- }
- else { /* no _ALERT function; print it on stderr */
- fprintf(stderr, "%s\n", lua_tostring(L, -2));
- lua_pop(L, 2); /* remove error message and _ALERT */
- }
- }
-}
-
-
-static int aux_do (lua_State *L, int status)
-{
- if (status == 0) { /* parse OK? */
- status = lua_pcall(L, 0, LUA_MULTRET, 0); /* call main */
- }
- callalert(L, status);
- return status;
-}
-
-
-LUALIB_API int lua_dofile (lua_State *L, const char *filename) {
- return aux_do(L, luaL_loadfile(L, filename));
-}
-
-
-LUALIB_API int lua_dobuffer (lua_State *L, const char *buff, size_t size,
- const char *name) {
- return aux_do(L, luaL_loadbuffer(L, buff, size, name));
-}
-
-
-LUALIB_API int lua_dostring (lua_State *L, const char *str) {
- return lua_dobuffer(L, str, strlen(str), str);
-}
-
-/* }====================================================== */
+++ /dev/null
-/*
-** $Id: lbaselib.c,v 1.3 2004/03/23 05:09:14 jbj Exp $
-** Basic library
-** See Copyright Notice in lua.h
-*/
-
-
-
-#include <ctype.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define lbaselib_c
-
-#include "lua.h"
-
-#include "lauxlib.h"
-#include "lualib.h"
-
-
-
-
-/*
-** If your system does not support `stdout', you can just remove this function.
-** If you need, you can define your own `print' function, following this
-** model but changing `fputs' to put the strings at a proper place
-** (a console window or a log file, for instance).
-*/
-static int luaB_print (lua_State *L)
-{
- int n = lua_gettop(L); /* number of arguments */
- int i;
- lua_getglobal(L, "tostring");
- for (i=1; i<=n; i++) {
- const char *s;
- lua_pushvalue(L, -1); /* function to be called */
- lua_pushvalue(L, i); /* value to print */
- lua_call(L, 1, 1);
- s = lua_tostring(L, -1); /* get result */
- if (s == NULL)
- return luaL_error(L, "`tostring' must return a string to `print'");
- if (i>1) fputs("\t", stdout);
- fputs(s, stdout);
- lua_pop(L, 1); /* pop result */
- }
- fputs("\n", stdout);
- return 0;
-}
-
-
-static int luaB_tonumber (lua_State *L)
-{
- int base = luaL_optint(L, 2, 10);
- if (base == 10) { /* standard conversion */
- luaL_checkany(L, 1);
- if (lua_isnumber(L, 1)) {
- lua_pushnumber(L, lua_tonumber(L, 1));
- return 1;
- }
- }
- else {
- const char *s1 = luaL_checkstring(L, 1);
- char *s2;
- unsigned long n;
- luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range");
- n = strtoul(s1, &s2, base);
- if (s1 != s2) { /* at least one valid digit? */
- while (isspace((unsigned char)(*s2))) s2++; /* skip trailing spaces */
- if (*s2 == '\0') { /* no invalid trailing characters? */
- lua_pushnumber(L, (lua_Number)n);
- return 1;
- }
- }
- }
- lua_pushnil(L); /* else not a number */
- return 1;
-}
-
-
-static int luaB_error (lua_State *L)
-{
- int level = luaL_optint(L, 2, 1);
- luaL_checkany(L, 1);
- if (!lua_isstring(L, 1) || level == 0)
- lua_pushvalue(L, 1); /* propagate error message without changes */
- else { /* add extra information */
- luaL_where(L, level);
- lua_pushvalue(L, 1);
- lua_concat(L, 2);
- }
- return lua_error(L);
-}
-
-
-static int luaB_getmetatable (lua_State *L)
-{
- luaL_checkany(L, 1);
- if (!lua_getmetatable(L, 1)) {
- lua_pushnil(L);
- return 1; /* no metatable */
- }
- luaL_getmetafield(L, 1, "__metatable");
- return 1; /* returns either __metatable field (if present) or metatable */
-}
-
-
-static int luaB_setmetatable (lua_State *L)
-{
- int t = lua_type(L, 2);
- luaL_checktype(L, 1, LUA_TTABLE);
- luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
- "nil or table expected");
- if (luaL_getmetafield(L, 1, "__metatable"))
- luaL_error(L, "cannot change a protected metatable");
- lua_settop(L, 2);
- lua_setmetatable(L, 1);
- return 1;
-}
-
-
-static void getfunc (lua_State *L)
-{
- if (lua_isfunction(L, 1)) lua_pushvalue(L, 1);
- else {
- lua_Debug ar;
- int level = luaL_optint(L, 1, 1);
- luaL_argcheck(L, level >= 0, 1, "level must be non-negative");
- if (lua_getstack(L, level, &ar) == 0)
- luaL_argerror(L, 1, "invalid level");
- lua_getinfo(L, "f", &ar);
- if (lua_isnil(L, -1))
- luaL_error(L, "no function environment for tail call at level %d",
- level);
- }
-}
-
-
-static int aux_getfenv (lua_State *L)
-{
- lua_getfenv(L, -1);
- lua_pushliteral(L, "__fenv");
- lua_rawget(L, -2);
- return !lua_isnil(L, -1);
-}
-
-
-static int luaB_getfenv (lua_State *L)
-{
- getfunc(L);
- if (!aux_getfenv(L)) /* __fenv not defined? */
- lua_pop(L, 1); /* remove it, to return real environment */
- return 1;
-}
-
-
-static int luaB_setfenv (lua_State *L)
-{
- luaL_checktype(L, 2, LUA_TTABLE);
- getfunc(L);
- if (aux_getfenv(L)) /* __fenv defined? */
- luaL_error(L, "`setfenv' cannot change a protected environment");
- else
- lua_pop(L, 2); /* remove __fenv and real environment table */
- lua_pushvalue(L, 2);
- if (lua_isnumber(L, 1) && lua_tonumber(L, 1) == 0)
- lua_replace(L, LUA_GLOBALSINDEX);
- else if (lua_setfenv(L, -2) == 0)
- luaL_error(L, "`setfenv' cannot change environment of given function");
- return 0;
-}
-
-
-static int luaB_rawequal (lua_State *L)
-{
- luaL_checkany(L, 1);
- luaL_checkany(L, 2);
- lua_pushboolean(L, lua_rawequal(L, 1, 2));
- return 1;
-}
-
-
-static int luaB_rawget (lua_State *L)
-{
- luaL_checktype(L, 1, LUA_TTABLE);
- luaL_checkany(L, 2);
- lua_rawget(L, 1);
- return 1;
-}
-
-static int luaB_rawset (lua_State *L)
-{
- luaL_checktype(L, 1, LUA_TTABLE);
- luaL_checkany(L, 2);
- luaL_checkany(L, 3);
- lua_rawset(L, 1);
- return 1;
-}
-
-
-static int luaB_gcinfo (lua_State *L)
-{
- lua_pushnumber(L, (lua_Number)lua_getgccount(L));
- lua_pushnumber(L, (lua_Number)lua_getgcthreshold(L));
- return 2;
-}
-
-
-static int luaB_collectgarbage (lua_State *L)
-{
- lua_setgcthreshold(L, luaL_optint(L, 1, 0));
- return 0;
-}
-
-
-static int luaB_type (lua_State *L)
-{
- luaL_checkany(L, 1);
- lua_pushstring(L, lua_typename(L, lua_type(L, 1)));
- return 1;
-}
-
-
-static int luaB_next (lua_State *L)
-{
- luaL_checktype(L, 1, LUA_TTABLE);
- lua_settop(L, 2); /* create a 2nd argument if there isn't one */
- if (lua_next(L, 1))
- return 2;
- else {
- lua_pushnil(L);
- return 1;
- }
-}
-
-
-static int luaB_pairs (lua_State *L)
-{
- luaL_checktype(L, 1, LUA_TTABLE);
- lua_pushliteral(L, "next");
- lua_rawget(L, LUA_GLOBALSINDEX); /* return generator, */
- lua_pushvalue(L, 1); /* state, */
- lua_pushnil(L); /* and initial value */
- return 3;
-}
-
-
-static int luaB_ipairs (lua_State *L)
-{
- lua_Number i = lua_tonumber(L, 2);
- luaL_checktype(L, 1, LUA_TTABLE);
- if (i == 0 && lua_isnone(L, 2)) { /* `for' start? */
- lua_pushliteral(L, "ipairs");
- lua_rawget(L, LUA_GLOBALSINDEX); /* return generator, */
- lua_pushvalue(L, 1); /* state, */
- lua_pushnumber(L, 0); /* and initial value */
- return 3;
- }
- else { /* `for' step */
- i++; /* next value */
- lua_pushnumber(L, i);
- lua_rawgeti(L, 1, (int)i);
- return (lua_isnil(L, -1)) ? 0 : 2;
- }
-}
-
-
-static int load_aux (lua_State *L, int status)
-{
- if (status == 0) /* OK? */
- return 1;
- else {
- lua_pushnil(L);
- lua_insert(L, -2); /* put before error message */
- return 2; /* return nil plus error message */
- }
-}
-
-
-static int luaB_loadstring (lua_State *L)
-{
- size_t l;
- const char *s = luaL_checklstring(L, 1, &l);
- const char *chunkname = luaL_optstring(L, 2, s);
- return load_aux(L, luaL_loadbuffer(L, s, l, chunkname));
-}
-
-
-static int luaB_loadfile (lua_State *L)
-{
- const char *fname = luaL_optstring(L, 1, NULL);
- return load_aux(L, luaL_loadfile(L, fname));
-}
-
-
-static int luaB_dofile (lua_State *L)
-{
- const char *fname = luaL_optstring(L, 1, NULL);
- int n = lua_gettop(L);
- int status = luaL_loadfile(L, fname);
- if (status != 0) lua_error(L);
- lua_call(L, 0, LUA_MULTRET);
- return lua_gettop(L) - n;
-}
-
-
-static int luaB_assert (lua_State *L)
-{
- luaL_checkany(L, 1);
- if (!lua_toboolean(L, 1))
- return luaL_error(L, "%s", luaL_optstring(L, 2, "assertion failed!"));
- lua_settop(L, 1);
- return 1;
-}
-
-
-static int luaB_unpack (lua_State *L)
-{
- int n, i;
- luaL_checktype(L, 1, LUA_TTABLE);
- n = luaL_getn(L, 1);
- luaL_checkstack(L, n, "table too big to unpack");
- for (i=1; i<=n; i++) /* push arg[1...n] */
- lua_rawgeti(L, 1, i);
- return n;
-}
-
-
-static int luaB_pcall (lua_State *L)
-{
- int status;
- luaL_checkany(L, 1);
- status = lua_pcall(L, lua_gettop(L) - 1, LUA_MULTRET, 0);
- lua_pushboolean(L, (status == 0));
- lua_insert(L, 1);
- return lua_gettop(L); /* return status + all results */
-}
-
-
-static int luaB_xpcall (lua_State *L)
-{
- int status;
- luaL_checkany(L, 2);
- lua_settop(L, 2);
- lua_insert(L, 1); /* put error function under function to be called */
- status = lua_pcall(L, 0, LUA_MULTRET, 1);
- lua_pushboolean(L, (status == 0));
- lua_replace(L, 1);
- return lua_gettop(L); /* return status + all results */
-}
-
-
-static int luaB_tostring (lua_State *L)
-{
- char buff[128];
- luaL_checkany(L, 1);
- if (luaL_callmeta(L, 1, "__tostring")) /* is there a metafield? */
- return 1; /* use its value */
- switch (lua_type(L, 1)) {
- case LUA_TNUMBER:
- lua_pushstring(L, lua_tostring(L, 1));
- return 1;
- case LUA_TSTRING:
- lua_pushvalue(L, 1);
- return 1;
- case LUA_TBOOLEAN:
- lua_pushstring(L, (lua_toboolean(L, 1) ? "true" : "false"));
- return 1;
- case LUA_TTABLE:
- sprintf(buff, "table: %p", lua_topointer(L, 1));
- break;
- case LUA_TFUNCTION:
- sprintf(buff, "function: %p", lua_topointer(L, 1));
- break;
- case LUA_TUSERDATA:
- case LUA_TLIGHTUSERDATA:
- sprintf(buff, "userdata: %p", lua_touserdata(L, 1));
- break;
- case LUA_TTHREAD:
- sprintf(buff, "thread: %p", (void *)lua_tothread(L, 1));
- break;
- case LUA_TNIL:
- lua_pushliteral(L, "nil");
- return 1;
- }
- lua_pushstring(L, buff);
- return 1;
-}
-
-
-static int luaB_newproxy (lua_State *L)
-{
- lua_settop(L, 1);
- lua_newuserdata(L, 0); /* create proxy */
- if (lua_toboolean(L, 1) == 0)
- return 1; /* no metatable */
- else if (lua_isboolean(L, 1)) {
- lua_newtable(L); /* create a new metatable `m' ... */
- lua_pushvalue(L, -1); /* ... and mark `m' as a valid metatable */
- lua_pushboolean(L, 1);
- lua_rawset(L, lua_upvalueindex(1)); /* weaktable[m] = true */
- }
- else {
- int validproxy = 0; /* to check if weaktable[metatable(u)] == true */
- if (lua_getmetatable(L, 1)) {
- lua_rawget(L, lua_upvalueindex(1));
- validproxy = lua_toboolean(L, -1);
- lua_pop(L, 1); /* remove value */
- }
- luaL_argcheck(L, validproxy, 1, "boolean or proxy expected");
- lua_getmetatable(L, 1); /* metatable is valid; get it */
- }
- lua_setmetatable(L, 2);
- return 1;
-}
-
-
-/*
-** {======================================================
-** `require' function
-** =======================================================
-*/
-
-
-/* name of global that holds table with loaded packages */
-#define REQTAB "_LOADED"
-
-/* name of global that holds the search path for packages */
-#define LUA_PATH "LUA_PATH"
-
-#ifndef LUA_PATH_SEP
-#define LUA_PATH_SEP ';'
-#endif
-
-#ifndef LUA_PATH_MARK
-#define LUA_PATH_MARK '?'
-#endif
-
-#ifndef LUA_PATH_DEFAULT
-#define LUA_PATH_DEFAULT "?;?.lua"
-#endif
-
-
-static const char *getpath (lua_State *L)
-{
- const char *path;
- lua_getglobal(L, LUA_PATH); /* try global variable */
- path = lua_tostring(L, -1);
- lua_pop(L, 1);
- if (path) return path;
- path = getenv(LUA_PATH); /* else try environment variable */
- if (path) return path;
- return LUA_PATH_DEFAULT; /* else use default */
-}
-
-
-static const char *pushnextpath (lua_State *L, const char *path)
-{
- const char *l;
- if (*path == '\0') return NULL; /* no more paths */
- if (*path == LUA_PATH_SEP) path++; /* skip separator */
- l = strchr(path, LUA_PATH_SEP); /* find next separator */
- if (l == NULL) l = path+strlen(path);
- lua_pushlstring(L, path, l - path); /* directory name */
- return l;
-}
-
-
-static void pushcomposename (lua_State *L)
-{
- const char *path = lua_tostring(L, -1);
- const char *wild;
- int n = 1;
- while ((wild = strchr(path, LUA_PATH_MARK)) != NULL) {
- /* is there stack space for prefix, name, and eventual last sufix? */
- luaL_checkstack(L, 3, "too many marks in a path component");
- lua_pushlstring(L, path, wild - path); /* push prefix */
- lua_pushvalue(L, 1); /* push package name (in place of MARK) */
- path = wild + 1; /* continue after MARK */
- n += 2;
- }
- lua_pushstring(L, path); /* push last sufix (`n' already includes this) */
- lua_concat(L, n);
-}
-
-
-static int luaB_require (lua_State *L)
-{
- const char *path;
- int status = LUA_ERRFILE; /* not found (yet) */
- luaL_checkstring(L, 1);
- lua_settop(L, 1);
- lua_getglobal(L, REQTAB);
- if (!lua_istable(L, 2)) return luaL_error(L, "`" REQTAB "' is not a table");
- path = getpath(L);
- lua_pushvalue(L, 1); /* check package's name in book-keeping table */
- lua_rawget(L, 2);
- if (lua_toboolean(L, -1)) /* is it there? */
- return 1; /* package is already loaded; return its result */
- else { /* must load it */
- while (status == LUA_ERRFILE) {
- lua_settop(L, 3); /* reset stack position */
- if ((path = pushnextpath(L, path)) == NULL) break;
- pushcomposename(L);
- status = luaL_loadfile(L, lua_tostring(L, -1)); /* try to load it */
- }
- }
- switch (status) {
- case 0: {
- lua_getglobal(L, "_REQUIREDNAME"); /* save previous name */
- lua_insert(L, -2); /* put it below function */
- lua_pushvalue(L, 1);
- lua_setglobal(L, "_REQUIREDNAME"); /* set new name */
- lua_call(L, 0, 1); /* run loaded module */
- lua_insert(L, -2); /* put result below previous name */
- lua_setglobal(L, "_REQUIREDNAME"); /* reset to previous name */
- if (lua_isnil(L, -1)) { /* no/nil return? */
- lua_pushboolean(L, 1);
- lua_replace(L, -2); /* replace to true */
- }
- lua_pushvalue(L, 1);
- lua_pushvalue(L, -2);
- lua_rawset(L, 2); /* mark it as loaded */
- return 1; /* return value */
- }
- case LUA_ERRFILE: { /* file not found */
- return luaL_error(L, "could not load package `%s' from path `%s'",
- lua_tostring(L, 1), getpath(L));
- }
- default: {
- return luaL_error(L, "error loading package `%s' (%s)",
- lua_tostring(L, 1), lua_tostring(L, -1));
- }
- }
-}
-
-/* }====================================================== */
-
-
-static const luaL_reg base_funcs[] = {
- {"error", luaB_error},
- {"getmetatable", luaB_getmetatable},
- {"setmetatable", luaB_setmetatable},
- {"getfenv", luaB_getfenv},
- {"setfenv", luaB_setfenv},
- {"next", luaB_next},
- {"ipairs", luaB_ipairs},
- {"pairs", luaB_pairs},
- {"print", luaB_print},
- {"tonumber", luaB_tonumber},
- {"tostring", luaB_tostring},
- {"type", luaB_type},
- {"assert", luaB_assert},
- {"unpack", luaB_unpack},
- {"rawequal", luaB_rawequal},
- {"rawget", luaB_rawget},
- {"rawset", luaB_rawset},
- {"pcall", luaB_pcall},
- {"xpcall", luaB_xpcall},
- {"collectgarbage", luaB_collectgarbage},
- {"gcinfo", luaB_gcinfo},
- {"loadfile", luaB_loadfile},
- {"dofile", luaB_dofile},
- {"loadstring", luaB_loadstring},
- {"require", luaB_require},
- {NULL, NULL}
-};
-
-
-/*
-** {======================================================
-** Coroutine library
-** =======================================================
-*/
-
-static int auxresume (lua_State *L, lua_State *co, int narg)
-{
- int status;
- if (!lua_checkstack(co, narg))
- luaL_error(L, "too many arguments to resume");
- lua_xmove(L, co, narg);
- status = lua_resume(co, narg);
- if (status == 0) {
- int nres = lua_gettop(co);
- if (!lua_checkstack(L, nres))
- luaL_error(L, "too many results to resume");
- lua_xmove(co, L, nres); /* move yielded values */
- return nres;
- }
- else {
- lua_xmove(co, L, 1); /* move error message */
- return -1; /* error flag */
- }
-}
-
-
-static int luaB_coresume (lua_State *L)
-{
- lua_State *co = lua_tothread(L, 1);
- int r;
- luaL_argcheck(L, co, 1, "coroutine expected");
- r = auxresume(L, co, lua_gettop(L) - 1);
- if (r < 0) {
- lua_pushboolean(L, 0);
- lua_insert(L, -2);
- return 2; /* return false + error message */
- }
- else {
- lua_pushboolean(L, 1);
- lua_insert(L, -(r + 1));
- return r + 1; /* return true + `resume' returns */
- }
-}
-
-
-static int luaB_auxwrap (lua_State *L)
-{
- lua_State *co = lua_tothread(L, lua_upvalueindex(1));
- int r = auxresume(L, co, lua_gettop(L));
- if (r < 0) {
- if (lua_isstring(L, -1)) { /* error object is a string? */
- luaL_where(L, 1); /* add extra info */
- lua_insert(L, -2);
- lua_concat(L, 2);
- }
- lua_error(L); /* propagate error */
- }
- return r;
-}
-
-
-static int luaB_cocreate (lua_State *L)
-{
- lua_State *NL = lua_newthread(L);
- luaL_argcheck(L, lua_isfunction(L, 1) && !lua_iscfunction(L, 1), 1,
- "Lua function expected");
- lua_pushvalue(L, 1); /* move function to top */
- lua_xmove(L, NL, 1); /* move function from L to NL */
- return 1;
-}
-
-
-static int luaB_cowrap (lua_State *L)
-{
- luaB_cocreate(L);
- lua_pushcclosure(L, luaB_auxwrap, 1);
- return 1;
-}
-
-
-static int luaB_yield (lua_State *L)
-{
- return lua_yield(L, lua_gettop(L));
-}
-
-
-static int luaB_costatus (lua_State *L)
-{
- lua_State *co = lua_tothread(L, 1);
- luaL_argcheck(L, co, 1, "coroutine expected");
- if (L == co) lua_pushliteral(L, "running");
- else {
- lua_Debug ar;
- if (lua_getstack(co, 0, &ar) == 0 && lua_gettop(co) == 0)
- lua_pushliteral(L, "dead");
- else
- lua_pushliteral(L, "suspended");
- }
- return 1;
-}
-
-
-static const luaL_reg co_funcs[] = {
- {"create", luaB_cocreate},
- {"wrap", luaB_cowrap},
- {"resume", luaB_coresume},
- {"yield", luaB_yield},
- {"status", luaB_costatus},
- {NULL, NULL}
-};
-
-/* }====================================================== */
-
-
-
-static void base_open (lua_State *L)
-{
- lua_pushliteral(L, "_G");
- lua_pushvalue(L, LUA_GLOBALSINDEX);
- luaL_openlib(L, NULL, base_funcs, 0); /* open lib into global table */
- lua_pushliteral(L, "_VERSION");
- lua_pushliteral(L, LUA_VERSION);
- lua_rawset(L, -3); /* set global _VERSION */
- /* `newproxy' needs a weaktable as upvalue */
- lua_pushliteral(L, "newproxy");
- lua_newtable(L); /* new table `w' */
- lua_pushvalue(L, -1); /* `w' will be its own metatable */
- lua_setmetatable(L, -2);
- lua_pushliteral(L, "__mode");
- lua_pushliteral(L, "k");
- lua_rawset(L, -3); /* metatable(w).__mode = "k" */
- lua_pushcclosure(L, luaB_newproxy, 1);
- lua_rawset(L, -3); /* set global `newproxy' */
- lua_rawset(L, -1); /* set global _G */
-}
-
-
-LUALIB_API int luaopen_base (lua_State *L) {
- base_open(L);
- luaL_openlib(L, LUA_COLIBNAME, co_funcs, 0);
- lua_newtable(L);
- lua_setglobal(L, REQTAB);
- return 0;
-}
-
+++ /dev/null
-/*
-** $Id: ldblib.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Interface from Lua to its debug API
-** See Copyright Notice in lua.h
-*/
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define ldblib_c
-
-#include "lua.h"
-
-#include "lauxlib.h"
-#include "lualib.h"
-
-
-
-static void settabss (lua_State *L, const char *i, const char *v)
-{
- lua_pushstring(L, i);
- lua_pushstring(L, v);
- lua_rawset(L, -3);
-}
-
-
-static void settabsi (lua_State *L, const char *i, int v)
-{
- lua_pushstring(L, i);
- lua_pushnumber(L, (lua_Number)v);
- lua_rawset(L, -3);
-}
-
-
-static int getinfo (lua_State *L)
-{
- lua_Debug ar;
- const char *options = luaL_optstring(L, 2, "flnSu");
- if (lua_isnumber(L, 1)) {
- if (!lua_getstack(L, (int)(lua_tonumber(L, 1)), &ar)) {
- lua_pushnil(L); /* level out of range */
- return 1;
- }
- }
- else if (lua_isfunction(L, 1)) {
- lua_pushfstring(L, ">%s", options);
- options = lua_tostring(L, -1);
- lua_pushvalue(L, 1);
- }
- else
- return luaL_argerror(L, 1, "function or level expected");
- if (!lua_getinfo(L, options, &ar))
- return luaL_argerror(L, 2, "invalid option");
- lua_newtable(L);
- for (; *options; options++) {
- switch (*options) {
- case 'S':
- settabss(L, "source", ar.source);
- settabss(L, "short_src", ar.short_src);
- settabsi(L, "linedefined", ar.linedefined);
- settabss(L, "what", ar.what);
- break;
- case 'l':
- settabsi(L, "currentline", ar.currentline);
- break;
- case 'u':
- settabsi(L, "nups", ar.nups);
- break;
- case 'n':
- settabss(L, "name", ar.name);
- settabss(L, "namewhat", ar.namewhat);
- break;
- case 'f':
- lua_pushliteral(L, "func");
- lua_pushvalue(L, -3);
- lua_rawset(L, -3);
- break;
- }
- }
- return 1; /* return table */
-}
-
-
-static int getlocal (lua_State *L)
-{
- lua_Debug ar;
- const char *name;
- if (!lua_getstack(L, luaL_checkint(L, 1), &ar)) /* level out of range? */
- return luaL_argerror(L, 1, "level out of range");
- name = lua_getlocal(L, &ar, luaL_checkint(L, 2));
- if (name) {
- lua_pushstring(L, name);
- lua_pushvalue(L, -2);
- return 2;
- }
- else {
- lua_pushnil(L);
- return 1;
- }
-}
-
-
-static int setlocal (lua_State *L)
-{
- lua_Debug ar;
- if (!lua_getstack(L, luaL_checkint(L, 1), &ar)) /* level out of range? */
- return luaL_argerror(L, 1, "level out of range");
- luaL_checkany(L, 3);
- lua_pushstring(L, lua_setlocal(L, &ar, luaL_checkint(L, 2)));
- return 1;
-}
-
-
-static int auxupvalue (lua_State *L, int get)
-{
- const char *name;
- int n = luaL_checkint(L, 2);
- luaL_checktype(L, 1, LUA_TFUNCTION);
- if (lua_iscfunction(L, 1)) return 0; /* cannot touch C upvalues from Lua */
- name = get ? lua_getupvalue(L, 1, n) : lua_setupvalue(L, 1, n);
- if (name == NULL) return 0;
- lua_pushstring(L, name);
- lua_insert(L, -(get+1));
- return get + 1;
-}
-
-
-static int getupvalue (lua_State *L)
-{
- return auxupvalue(L, 1);
-}
-
-
-static int setupvalue (lua_State *L)
-{
- luaL_checkany(L, 3);
- return auxupvalue(L, 0);
-}
-
-
-
-static const char KEY_HOOK = 'h';
-
-
-static void hookf (lua_State *L, lua_Debug *ar)
-{
- static const char *const hooknames[] =
- {"call", "return", "line", "count", "tail return"};
- lua_pushlightuserdata(L, (void *)&KEY_HOOK);
- lua_rawget(L, LUA_REGISTRYINDEX);
- if (lua_isfunction(L, -1)) {
- lua_pushstring(L, hooknames[(int)ar->event]);
- if (ar->currentline >= 0)
- lua_pushnumber(L, (lua_Number)ar->currentline);
- else lua_pushnil(L);
- lua_assert(lua_getinfo(L, "lS", ar));
- lua_call(L, 2, 0);
- }
- else
- lua_pop(L, 1); /* pop result from gettable */
-}
-
-
-static int makemask (const char *smask, int count)
-{
- int mask = 0;
- if (strchr(smask, 'c')) mask |= LUA_MASKCALL;
- if (strchr(smask, 'r')) mask |= LUA_MASKRET;
- if (strchr(smask, 'l')) mask |= LUA_MASKLINE;
- if (count > 0) mask |= LUA_MASKCOUNT;
- return mask;
-}
-
-
-static char *unmakemask (int mask, char *smask)
-{
- int i = 0;
- if (mask & LUA_MASKCALL) smask[i++] = 'c';
- if (mask & LUA_MASKRET) smask[i++] = 'r';
- if (mask & LUA_MASKLINE) smask[i++] = 'l';
- smask[i] = '\0';
- return smask;
-}
-
-
-static int sethook (lua_State *L)
-{
- if (lua_isnoneornil(L, 1)) {
- lua_settop(L, 1);
- lua_sethook(L, NULL, 0, 0); /* turn off hooks */
- }
- else {
- const char *smask = luaL_checkstring(L, 2);
- int count = luaL_optint(L, 3, 0);
- luaL_checktype(L, 1, LUA_TFUNCTION);
- lua_sethook(L, hookf, makemask(smask, count), count);
- }
- lua_pushlightuserdata(L, (void *)&KEY_HOOK);
- lua_pushvalue(L, 1);
- lua_rawset(L, LUA_REGISTRYINDEX); /* set new hook */
- return 0;
-}
-
-
-static int gethook (lua_State *L)
-{
- char buff[5];
- int mask = lua_gethookmask(L);
- lua_Hook hook = lua_gethook(L);
- if (hook != NULL && hook != hookf) /* external hook? */
- lua_pushliteral(L, "external hook");
- else {
- lua_pushlightuserdata(L, (void *)&KEY_HOOK);
- lua_rawget(L, LUA_REGISTRYINDEX); /* get hook */
- }
- lua_pushstring(L, unmakemask(mask, buff));
- lua_pushnumber(L, (lua_Number)lua_gethookcount(L));
- return 3;
-}
-
-
-static int debug (lua_State *L)
-{
- for (;;) {
- char buffer[250];
- fputs("lua_debug> ", stderr);
- if (fgets(buffer, sizeof(buffer), stdin) == 0 ||
- strcmp(buffer, "cont\n") == 0)
- return 0;
- lua_dostring(L, buffer);
- lua_settop(L, 0); /* remove eventual returns */
- }
-}
-
-
-#define LEVELS1 12 /* size of the first part of the stack */
-#define LEVELS2 10 /* size of the second part of the stack */
-
-static int errorfb (lua_State *L)
-{
- int level = 1; /* skip level 0 (it's this function) */
- int firstpart = 1; /* still before eventual `...' */
- lua_Debug ar;
- if (lua_gettop(L) == 0)
- lua_pushliteral(L, "");
- else if (!lua_isstring(L, 1)) return 1; /* no string message */
- else lua_pushliteral(L, "\n");
- lua_pushliteral(L, "stack traceback:");
- while (lua_getstack(L, level++, &ar)) {
- if (level > LEVELS1 && firstpart) {
- /* no more than `LEVELS2' more levels? */
- if (!lua_getstack(L, level+LEVELS2, &ar))
- level--; /* keep going */
- else {
- lua_pushliteral(L, "\n\t..."); /* too many levels */
- while (lua_getstack(L, level+LEVELS2, &ar)) /* find last levels */
- level++;
- }
- firstpart = 0;
- continue;
- }
- lua_pushliteral(L, "\n\t");
- lua_getinfo(L, "Snl", &ar);
- lua_pushfstring(L, "%s:", ar.short_src);
- if (ar.currentline > 0)
- lua_pushfstring(L, "%d:", ar.currentline);
- switch (*ar.namewhat) {
- case 'g': /* global */
- case 'l': /* local */
- case 'f': /* field */
- case 'm': /* method */
- lua_pushfstring(L, " in function `%s'", ar.name);
- break;
- default: {
- if (*ar.what == 'm') /* main? */
- lua_pushfstring(L, " in main chunk");
- else if (*ar.what == 'C' || *ar.what == 't')
- lua_pushliteral(L, " ?"); /* C function or tail call */
- else
- lua_pushfstring(L, " in function <%s:%d>",
- ar.short_src, ar.linedefined);
- }
- }
- lua_concat(L, lua_gettop(L));
- }
- lua_concat(L, lua_gettop(L));
- return 1;
-}
-
-
-static const luaL_reg dblib[] = {
- {"getlocal", getlocal},
- {"getinfo", getinfo},
- {"gethook", gethook},
- {"getupvalue", getupvalue},
- {"sethook", sethook},
- {"setlocal", setlocal},
- {"setupvalue", setupvalue},
- {"debug", debug},
- {"traceback", errorfb},
- {NULL, NULL}
-};
-
-
-LUALIB_API int luaopen_debug (lua_State *L) {
- luaL_openlib(L, LUA_DBLIBNAME, dblib, 0);
- lua_pushliteral(L, "_TRACEBACK");
- lua_pushcfunction(L, errorfb);
- lua_settable(L, LUA_GLOBALSINDEX);
- return 1;
-}
-
+++ /dev/null
-/*
-** $Id: liolib.c,v 1.3 2004/03/23 05:09:14 jbj Exp $
-** Standard I/O (and system) library
-** See Copyright Notice in lua.h
-*/
-
-
-#include <errno.h>
-#include <locale.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-
-#define liolib_c
-
-#include "lua.h"
-
-#include "lauxlib.h"
-#include "lualib.h"
-
-
-
-/*
-** by default, gcc does not get `tmpname'
-*/
-#ifndef USE_TMPNAME
-#ifdef __GNUC__
-#define USE_TMPNAME 0
-#else
-#define USE_TMPNAME 1
-#endif
-#endif
-
-
-/*
-** by default, posix systems get `popen'
-*/
-#ifndef USE_POPEN
-#ifdef _POSIX_C_SOURCE
-#if _POSIX_C_SOURCE >= 2
-#define USE_POPEN 1
-#endif
-#endif
-#endif
-
-#ifndef USE_POPEN
-#define USE_POPEN 0
-#endif
-
-
-
-
-/*
-** {======================================================
-** FILE Operations
-** =======================================================
-*/
-
-
-#if !USE_POPEN
-#define pclose(f) (-1)
-#endif
-
-
-#define FILEHANDLE "FILE*"
-
-#define IO_INPUT "_input"
-#define IO_OUTPUT "_output"
-
-
-static int pushresult (lua_State *L, int i, const char *filename)
-{
- if (i) {
- lua_pushboolean(L, 1);
- return 1;
- }
- else {
- lua_pushnil(L);
- if (filename)
- lua_pushfstring(L, "%s: %s", filename, strerror(errno));
- else
- lua_pushfstring(L, "%s", strerror(errno));
- lua_pushnumber(L, errno);
- return 3;
- }
-}
-
-
-static FILE **topfile (lua_State *L, int findex)
-{
- FILE **f = (FILE **)luaL_checkudata(L, findex, FILEHANDLE);
- if (f == NULL) luaL_argerror(L, findex, "bad file");
- return f;
-}
-
-
-static int io_type (lua_State *L)
-{
- FILE **f = (FILE **)luaL_checkudata(L, 1, FILEHANDLE);
- if (f == NULL) lua_pushnil(L);
- else if (*f == NULL)
- lua_pushliteral(L, "closed file");
- else
- lua_pushliteral(L, "file");
- return 1;
-}
-
-
-static FILE *tofile (lua_State *L, int findex)
-{
- FILE **f = topfile(L, findex);
- if (*f == NULL)
- luaL_error(L, "attempt to use a closed file");
- return *f;
-}
-
-
-
-/*
-** When creating file handles, always creates a `closed' file handle
-** before opening the actual file; so, if there is a memory error, the
-** file is not left opened.
-*/
-static FILE **newfile (lua_State *L)
-{
- FILE **pf = (FILE **)lua_newuserdata(L, sizeof(FILE *));
- *pf = NULL; /* file handle is currently `closed' */
- luaL_getmetatable(L, FILEHANDLE);
- lua_setmetatable(L, -2);
- return pf;
-}
-
-
-/*
-** assumes that top of the stack is the `io' library, and next is
-** the `io' metatable
-*/
-static void registerfile (lua_State *L, FILE *f, const char *name,
- const char *impname)
-{
- lua_pushstring(L, name);
- *newfile(L) = f;
- if (impname) {
- lua_pushstring(L, impname);
- lua_pushvalue(L, -2);
- lua_settable(L, -6); /* metatable[impname] = file */
- }
- lua_settable(L, -3); /* io[name] = file */
-}
-
-
-static int aux_close (lua_State *L)
-{
- FILE *f = tofile(L, 1);
- if (f == stdin || f == stdout || f == stderr)
- return 0; /* file cannot be closed */
- else {
- int ok = (pclose(f) != -1) || (fclose(f) == 0);
- if (ok)
- *(FILE **)lua_touserdata(L, 1) = NULL; /* mark file as closed */
- return ok;
- }
-}
-
-
-static int io_close (lua_State *L)
-{
- if (lua_isnone(L, 1) && lua_type(L, lua_upvalueindex(1)) == LUA_TTABLE) {
- lua_pushstring(L, IO_OUTPUT);
- lua_rawget(L, lua_upvalueindex(1));
- }
- return pushresult(L, aux_close(L), NULL);
-}
-
-
-static int io_gc (lua_State *L)
-{
- FILE **f = topfile(L, 1);
- if (*f != NULL) /* ignore closed files */
- aux_close(L);
- return 0;
-}
-
-
-static int io_tostring (lua_State *L)
-{
- char buff[128];
- FILE **f = topfile(L, 1);
- if (*f == NULL)
- strcpy(buff, "closed");
- else
- sprintf(buff, "%p", lua_touserdata(L, 1));
- lua_pushfstring(L, "file (%s)", buff);
- return 1;
-}
-
-
-static int io_open (lua_State *L)
-{
- const char *filename = luaL_checkstring(L, 1);
- const char *mode = luaL_optstring(L, 2, "r");
- FILE **pf = newfile(L);
- *pf = fopen(filename, mode);
- return (*pf == NULL) ? pushresult(L, 0, filename) : 1;
-}
-
-
-static int io_popen (lua_State *L)
-{
-#if !USE_POPEN
- luaL_error(L, "`popen' not supported");
- return 0;
-#else
- const char *filename = luaL_checkstring(L, 1);
- const char *mode = luaL_optstring(L, 2, "r");
- FILE **pf = newfile(L);
- *pf = popen(filename, mode);
- return (*pf == NULL) ? pushresult(L, 0, filename) : 1;
-#endif
-}
-
-
-static int io_tmpfile (lua_State *L)
-{
- FILE **pf = newfile(L);
- *pf = tmpfile();
- return (*pf == NULL) ? pushresult(L, 0, NULL) : 1;
-}
-
-
-static FILE *getiofile (lua_State *L, const char *name)
-{
- lua_pushstring(L, name);
- lua_rawget(L, lua_upvalueindex(1));
- return tofile(L, -1);
-}
-
-
-static int g_iofile (lua_State *L, const char *name, const char *mode)
-{
- if (!lua_isnoneornil(L, 1)) {
- const char *filename = lua_tostring(L, 1);
- lua_pushstring(L, name);
- if (filename) {
- FILE **pf = newfile(L);
- *pf = fopen(filename, mode);
- if (*pf == NULL) {
- lua_pushfstring(L, "%s: %s", filename, strerror(errno));
- luaL_argerror(L, 1, lua_tostring(L, -1));
- }
- }
- else {
- tofile(L, 1); /* check that it's a valid file handle */
- lua_pushvalue(L, 1);
- }
- lua_rawset(L, lua_upvalueindex(1));
- }
- /* return current value */
- lua_pushstring(L, name);
- lua_rawget(L, lua_upvalueindex(1));
- return 1;
-}
-
-
-static int io_input (lua_State *L)
-{
- return g_iofile(L, IO_INPUT, "r");
-}
-
-
-static int io_output (lua_State *L)
-{
- return g_iofile(L, IO_OUTPUT, "w");
-}
-
-
-static int io_readline (lua_State *L);
-
-
-static void aux_lines (lua_State *L, int idx, int close)
-{
- lua_pushliteral(L, FILEHANDLE);
- lua_rawget(L, LUA_REGISTRYINDEX);
- lua_pushvalue(L, idx);
- lua_pushboolean(L, close); /* close/not close file when finished */
- lua_pushcclosure(L, io_readline, 3);
-}
-
-
-static int f_lines (lua_State *L)
-{
- tofile(L, 1); /* check that it's a valid file handle */
- aux_lines(L, 1, 0);
- return 1;
-}
-
-
-static int io_lines (lua_State *L)
-{
- if (lua_isnoneornil(L, 1)) { /* no arguments? */
- lua_pushstring(L, IO_INPUT);
- lua_rawget(L, lua_upvalueindex(1)); /* will iterate over default input */
- return f_lines(L);
- }
- else {
- const char *filename = luaL_checkstring(L, 1);
- FILE **pf = newfile(L);
- *pf = fopen(filename, "r");
- luaL_argcheck(L, *pf, 1, strerror(errno));
- aux_lines(L, lua_gettop(L), 1);
- return 1;
- }
-}
-
-
-/*
-** {======================================================
-** READ
-** =======================================================
-*/
-
-
-static int read_number (lua_State *L, FILE *f)
-{
- lua_Number d;
- if (fscanf(f, LUA_NUMBER_SCAN, &d) == 1) {
- lua_pushnumber(L, d);
- return 1;
- }
- else return 0; /* read fails */
-}
-
-
-static int test_eof (lua_State *L, FILE *f)
-{
- int c = getc(f);
- ungetc(c, f);
- lua_pushlstring(L, NULL, 0);
- return (c != EOF);
-}
-
-
-static int read_line (lua_State *L, FILE *f)
-{
- luaL_Buffer b;
- luaL_buffinit(L, &b);
- for (;;) {
- size_t l;
- char *p = luaL_prepbuffer(&b);
- if (fgets(p, LUAL_BUFFERSIZE, f) == NULL) { /* eof? */
- luaL_pushresult(&b); /* close buffer */
- return (lua_strlen(L, -1) > 0); /* check whether read something */
- }
- l = strlen(p);
- if (p[l-1] != '\n')
- luaL_addsize(&b, l);
- else {
- luaL_addsize(&b, l - 1); /* do not include `eol' */
- luaL_pushresult(&b); /* close buffer */
- return 1; /* read at least an `eol' */
- }
- }
-}
-
-
-static int read_chars (lua_State *L, FILE *f, size_t n)
-{
- size_t rlen; /* how much to read */
- size_t nr; /* number of chars actually read */
- luaL_Buffer b;
- luaL_buffinit(L, &b);
- rlen = LUAL_BUFFERSIZE; /* try to read that much each time */
- do {
- char *p = luaL_prepbuffer(&b);
- if (rlen > n) rlen = n; /* cannot read more than asked */
- nr = fread(p, sizeof(char), rlen, f);
- luaL_addsize(&b, nr);
- n -= nr; /* still have to read `n' chars */
- } while (n > 0 && nr == rlen); /* until end of count or eof */
- luaL_pushresult(&b); /* close buffer */
- return (n == 0 || lua_strlen(L, -1) > 0);
-}
-
-
-static int g_read (lua_State *L, FILE *f, int first)
-{
- int nargs = lua_gettop(L) - 1;
- int success;
- int n;
- if (nargs == 0) { /* no arguments? */
- success = read_line(L, f);
- n = first+1; /* to return 1 result */
- }
- else { /* ensure stack space for all results and for auxlib's buffer */
- luaL_checkstack(L, nargs+LUA_MINSTACK, "too many arguments");
- success = 1;
- for (n = first; nargs-- && success; n++) {
- if (lua_type(L, n) == LUA_TNUMBER) {
- size_t l = (size_t)lua_tonumber(L, n);
- success = (l == 0) ? test_eof(L, f) : read_chars(L, f, l);
- }
- else {
- const char *p = lua_tostring(L, n);
- luaL_argcheck(L, p && p[0] == '*', n, "invalid option");
- switch (p[1]) {
- case 'n': /* number */
- success = read_number(L, f);
- break;
- case 'l': /* line */
- success = read_line(L, f);
- break;
- case 'a': /* file */
- read_chars(L, f, ~((size_t)0)); /* read MAX_SIZE_T chars */
- success = 1; /* always success */
- break;
- case 'w': /* word */
- return luaL_error(L, "obsolete option `*w' to `read'");
- default:
- return luaL_argerror(L, n, "invalid format");
- }
- }
- }
- }
- if (!success) {
- lua_pop(L, 1); /* remove last result */
- lua_pushnil(L); /* push nil instead */
- }
- return n - first;
-}
-
-
-static int io_read (lua_State *L)
-{
- return g_read(L, getiofile(L, IO_INPUT), 1);
-}
-
-
-static int f_read (lua_State *L)
-{
- return g_read(L, tofile(L, 1), 2);
-}
-
-
-static int io_readline (lua_State *L)
-{
- FILE *f = *(FILE **)lua_touserdata(L, lua_upvalueindex(2));
- if (f == NULL) /* file is already closed? */
- luaL_error(L, "file is already closed");
- if (read_line(L, f)) return 1;
- else { /* EOF */
- if (lua_toboolean(L, lua_upvalueindex(3))) { /* generator created file? */
- lua_settop(L, 0);
- lua_pushvalue(L, lua_upvalueindex(2));
- aux_close(L); /* close it */
- }
- return 0;
- }
-}
-
-/* }====================================================== */
-
-
-static int g_write (lua_State *L, FILE *f, int arg)
-{
- int nargs = lua_gettop(L) - 1;
- int status = 1;
- for (; nargs--; arg++) {
- if (lua_type(L, arg) == LUA_TNUMBER) {
- /* optimization: could be done exactly as for strings */
- status = status &&
- fprintf(f, LUA_NUMBER_FMT, lua_tonumber(L, arg)) > 0;
- }
- else {
- size_t l;
- const char *s = luaL_checklstring(L, arg, &l);
- status = status && (fwrite(s, sizeof(char), l, f) == l);
- }
- }
- return pushresult(L, status, NULL);
-}
-
-
-static int io_write (lua_State *L)
-{
- return g_write(L, getiofile(L, IO_OUTPUT), 1);
-}
-
-
-static int f_write (lua_State *L)
-{
- return g_write(L, tofile(L, 1), 2);
-}
-
-
-static int f_seek (lua_State *L)
-{
- static const int mode[] = {SEEK_SET, SEEK_CUR, SEEK_END};
- static const char *const modenames[] = {"set", "cur", "end", NULL};
- FILE *f = tofile(L, 1);
- int op = luaL_findstring(luaL_optstring(L, 2, "cur"), modenames);
- long offset = luaL_optlong(L, 3, 0);
- luaL_argcheck(L, op != -1, 2, "invalid mode");
- op = fseek(f, offset, mode[op]);
- if (op)
- return pushresult(L, 0, NULL); /* error */
- else {
- lua_pushnumber(L, ftell(f));
- return 1;
- }
-}
-
-
-static int io_flush (lua_State *L)
-{
- return pushresult(L, fflush(getiofile(L, IO_OUTPUT)) == 0, NULL);
-}
-
-
-static int f_flush (lua_State *L)
-{
- return pushresult(L, fflush(tofile(L, 1)) == 0, NULL);
-}
-
-
-static const luaL_reg iolib[] = {
- {"input", io_input},
- {"output", io_output},
- {"lines", io_lines},
- {"close", io_close},
- {"flush", io_flush},
- {"open", io_open},
- {"popen", io_popen},
- {"read", io_read},
- {"tmpfile", io_tmpfile},
- {"type", io_type},
- {"write", io_write},
- {NULL, NULL}
-};
-
-
-static const luaL_reg flib[] = {
- {"flush", f_flush},
- {"read", f_read},
- {"lines", f_lines},
- {"seek", f_seek},
- {"write", f_write},
- {"close", io_close},
- {"__gc", io_gc},
- {"__tostring", io_tostring},
- {NULL, NULL}
-};
-
-
-static void createmeta (lua_State *L)
-{
- luaL_newmetatable(L, FILEHANDLE); /* create new metatable for file handles */
- /* file methods */
- lua_pushliteral(L, "__index");
- lua_pushvalue(L, -2); /* push metatable */
- lua_rawset(L, -3); /* metatable.__index = metatable */
- luaL_openlib(L, NULL, flib, 0);
-}
-
-/* }====================================================== */
-
-
-/*
-** {======================================================
-** Other O.S. Operations
-** =======================================================
-*/
-
-static int io_execute (lua_State *L)
-{
- lua_pushnumber(L, system(luaL_checkstring(L, 1)));
- return 1;
-}
-
-
-static int io_remove (lua_State *L)
-{
- const char *filename = luaL_checkstring(L, 1);
- return pushresult(L, remove(filename) == 0, filename);
-}
-
-
-static int io_rename (lua_State *L)
-{
- const char *fromname = luaL_checkstring(L, 1);
- const char *toname = luaL_checkstring(L, 2);
- return pushresult(L, rename(fromname, toname) == 0, fromname);
-}
-
-
-static int io_tmpname (lua_State *L)
-{
-#if !USE_TMPNAME
- luaL_error(L, "`tmpname' not supported");
- return 0;
-#else
- char buff[L_tmpnam];
- if (tmpnam(buff) != buff)
- return luaL_error(L, "unable to generate a unique filename in `tmpname'");
- lua_pushstring(L, buff);
- return 1;
-#endif
-}
-
-
-static int io_getenv (lua_State *L)
-{
- lua_pushstring(L, getenv(luaL_checkstring(L, 1))); /* if NULL push nil */
- return 1;
-}
-
-
-static int io_clock (lua_State *L)
-{
- lua_pushnumber(L, ((lua_Number)clock())/(lua_Number)CLOCKS_PER_SEC);
- return 1;
-}
-
-
-/*
-** {======================================================
-** Time/Date operations
-** { year=%Y, month=%m, day=%d, hour=%H, min=%M, sec=%S,
-** wday=%w+1, yday=%j, isdst=? }
-** =======================================================
-*/
-
-static void setfield (lua_State *L, const char *key, int value)
-{
- lua_pushstring(L, key);
- lua_pushnumber(L, value);
- lua_rawset(L, -3);
-}
-
-static void setboolfield (lua_State *L, const char *key, int value)
-{
- lua_pushstring(L, key);
- lua_pushboolean(L, value);
- lua_rawset(L, -3);
-}
-
-static int getboolfield (lua_State *L, const char *key)
-{
- int res;
- lua_pushstring(L, key);
- lua_gettable(L, -2);
- res = lua_toboolean(L, -1);
- lua_pop(L, 1);
- return res;
-}
-
-
-static int getfield (lua_State *L, const char *key, int d)
-{
- int res;
- lua_pushstring(L, key);
- lua_gettable(L, -2);
- if (lua_isnumber(L, -1))
- res = (int)(lua_tonumber(L, -1));
- else {
- if (d == -2)
- return luaL_error(L, "field `%s' missing in date table", key);
- res = d;
- }
- lua_pop(L, 1);
- return res;
-}
-
-
-static int io_date (lua_State *L)
-{
- const char *s = luaL_optstring(L, 1, "%c");
- time_t t = (time_t)(luaL_optnumber(L, 2, -1));
- struct tm *stm;
- if (t == (time_t)(-1)) /* no time given? */
- t = time(NULL); /* use current time */
- if (*s == '!') { /* UTC? */
- stm = gmtime(&t);
- s++; /* skip `!' */
- }
- else
- stm = localtime(&t);
- if (stm == NULL) /* invalid date? */
- lua_pushnil(L);
- else if (strcmp(s, "*t") == 0) {
- lua_newtable(L);
- setfield(L, "sec", stm->tm_sec);
- setfield(L, "min", stm->tm_min);
- setfield(L, "hour", stm->tm_hour);
- setfield(L, "day", stm->tm_mday);
- setfield(L, "month", stm->tm_mon+1);
- setfield(L, "year", stm->tm_year+1900);
- setfield(L, "wday", stm->tm_wday+1);
- setfield(L, "yday", stm->tm_yday+1);
- setboolfield(L, "isdst", stm->tm_isdst);
- }
- else {
- char b[256];
- if (strftime(b, sizeof(b), s, stm))
- lua_pushstring(L, b);
- else
- return luaL_error(L, "`date' format too long");
- }
- return 1;
-}
-
-
-static int io_time (lua_State *L)
-{
- if (lua_isnoneornil(L, 1)) /* called without args? */
- lua_pushnumber(L, time(NULL)); /* return current time */
- else {
- time_t t;
- struct tm ts;
- luaL_checktype(L, 1, LUA_TTABLE);
- lua_settop(L, 1); /* make sure table is at the top */
- ts.tm_sec = getfield(L, "sec", 0);
- ts.tm_min = getfield(L, "min", 0);
- ts.tm_hour = getfield(L, "hour", 12);
- ts.tm_mday = getfield(L, "day", -2);
- ts.tm_mon = getfield(L, "month", -2) - 1;
- ts.tm_year = getfield(L, "year", -2) - 1900;
- ts.tm_isdst = getboolfield(L, "isdst");
- t = mktime(&ts);
- if (t == (time_t)(-1))
- lua_pushnil(L);
- else
- lua_pushnumber(L, t);
- }
- return 1;
-}
-
-
-static int io_difftime (lua_State *L)
-{
- lua_pushnumber(L, difftime((time_t)(luaL_checknumber(L, 1)),
- (time_t)(luaL_optnumber(L, 2, 0))));
- return 1;
-}
-
-/* }====================================================== */
-
-
-static int io_setloc (lua_State *L)
-{
- static const int cat[] = {LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY,
- LC_NUMERIC, LC_TIME};
- static const char *const catnames[] = {"all", "collate", "ctype", "monetary",
- "numeric", "time", NULL};
- const char *l = lua_tostring(L, 1);
- int op = luaL_findstring(luaL_optstring(L, 2, "all"), catnames);
- luaL_argcheck(L, l || lua_isnoneornil(L, 1), 1, "string expected");
- luaL_argcheck(L, op != -1, 2, "invalid option");
- lua_pushstring(L, setlocale(cat[op], l));
- return 1;
-}
-
-
-static int io_exit (lua_State *L)
-{
- exit(luaL_optint(L, 1, EXIT_SUCCESS));
- return 0; /* to avoid warnings */
-}
-
-static const luaL_reg syslib[] = {
- {"clock", io_clock},
- {"date", io_date},
- {"difftime", io_difftime},
- {"execute", io_execute},
- {"exit", io_exit},
- {"getenv", io_getenv},
- {"remove", io_remove},
- {"rename", io_rename},
- {"setlocale", io_setloc},
- {"time", io_time},
- {"tmpname", io_tmpname},
- {NULL, NULL}
-};
-
-/* }====================================================== */
-
-
-
-LUALIB_API int luaopen_io (lua_State *L) {
- luaL_openlib(L, LUA_OSLIBNAME, syslib, 0);
- createmeta(L);
- lua_pushvalue(L, -1);
- luaL_openlib(L, LUA_IOLIBNAME, iolib, 1);
- /* put predefined file handles into `io' table */
- registerfile(L, stdin, "stdin", IO_INPUT);
- registerfile(L, stdout, "stdout", IO_OUTPUT);
- registerfile(L, stderr, "stderr", NULL);
- return 1;
-}
-
+++ /dev/null
-/*
-** $Id: lmathlib.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Standard mathematical library
-** See Copyright Notice in lua.h
-*/
-
-
-#include <stdlib.h>
-#include <math.h>
-
-#define lmathlib_c
-
-#include "lua.h"
-
-#include "lauxlib.h"
-#include "lualib.h"
-
-
-#undef PI
-#define PI (3.14159265358979323846)
-#define RADIANS_PER_DEGREE (PI/180.0)
-
-
-
-/*
-** If you want Lua to operate in degrees (instead of radians),
-** define USE_DEGREES
-*/
-#ifdef USE_DEGREES
-#define FROMRAD(a) ((a)/RADIANS_PER_DEGREE)
-#define TORAD(a) ((a)*RADIANS_PER_DEGREE)
-#else
-#define FROMRAD(a) (a)
-#define TORAD(a) (a)
-#endif
-
-
-static int math_abs (lua_State *L)
-{
- lua_pushnumber(L, fabs(luaL_checknumber(L, 1)));
- return 1;
-}
-
-static int math_sin (lua_State *L)
-{
- lua_pushnumber(L, sin(TORAD(luaL_checknumber(L, 1))));
- return 1;
-}
-
-static int math_cos (lua_State *L)
-{
- lua_pushnumber(L, cos(TORAD(luaL_checknumber(L, 1))));
- return 1;
-}
-
-static int math_tan (lua_State *L)
-{
- lua_pushnumber(L, tan(TORAD(luaL_checknumber(L, 1))));
- return 1;
-}
-
-static int math_asin (lua_State *L)
-{
- lua_pushnumber(L, FROMRAD(asin(luaL_checknumber(L, 1))));
- return 1;
-}
-
-static int math_acos (lua_State *L)
-{
- lua_pushnumber(L, FROMRAD(acos(luaL_checknumber(L, 1))));
- return 1;
-}
-
-static int math_atan (lua_State *L)
-{
- lua_pushnumber(L, FROMRAD(atan(luaL_checknumber(L, 1))));
- return 1;
-}
-
-static int math_atan2 (lua_State *L)
-{
- lua_pushnumber(L, FROMRAD(atan2(luaL_checknumber(L, 1), luaL_checknumber(L, 2))));
- return 1;
-}
-
-static int math_ceil (lua_State *L)
-{
- lua_pushnumber(L, ceil(luaL_checknumber(L, 1)));
- return 1;
-}
-
-static int math_floor (lua_State *L)
-{
- lua_pushnumber(L, floor(luaL_checknumber(L, 1)));
- return 1;
-}
-
-static int math_mod (lua_State *L)
-{
- lua_pushnumber(L, fmod(luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
- return 1;
-}
-
-static int math_sqrt (lua_State *L)
-{
- lua_pushnumber(L, sqrt(luaL_checknumber(L, 1)));
- return 1;
-}
-
-static int math_pow (lua_State *L)
-{
- lua_pushnumber(L, pow(luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
- return 1;
-}
-
-static int math_log (lua_State *L)
-{
- lua_pushnumber(L, log(luaL_checknumber(L, 1)));
- return 1;
-}
-
-static int math_log10 (lua_State *L)
-{
- lua_pushnumber(L, log10(luaL_checknumber(L, 1)));
- return 1;
-}
-
-static int math_exp (lua_State *L)
-{
- lua_pushnumber(L, exp(luaL_checknumber(L, 1)));
- return 1;
-}
-
-static int math_deg (lua_State *L)
-{
- lua_pushnumber(L, luaL_checknumber(L, 1)/RADIANS_PER_DEGREE);
- return 1;
-}
-
-static int math_rad (lua_State *L)
-{
- lua_pushnumber(L, luaL_checknumber(L, 1)*RADIANS_PER_DEGREE);
- return 1;
-}
-
-static int math_frexp (lua_State *L)
-{
- int e;
- lua_pushnumber(L, frexp(luaL_checknumber(L, 1), &e));
- lua_pushnumber(L, e);
- return 2;
-}
-
-static int math_ldexp (lua_State *L)
-{
- lua_pushnumber(L, ldexp(luaL_checknumber(L, 1), luaL_checkint(L, 2)));
- return 1;
-}
-
-
-
-static int math_min (lua_State *L)
-{
- int n = lua_gettop(L); /* number of arguments */
- lua_Number dmin = luaL_checknumber(L, 1);
- int i;
- for (i=2; i<=n; i++) {
- lua_Number d = luaL_checknumber(L, i);
- if (d < dmin)
- dmin = d;
- }
- lua_pushnumber(L, dmin);
- return 1;
-}
-
-
-static int math_max (lua_State *L)
-{
- int n = lua_gettop(L); /* number of arguments */
- lua_Number dmax = luaL_checknumber(L, 1);
- int i;
- for (i=2; i<=n; i++) {
- lua_Number d = luaL_checknumber(L, i);
- if (d > dmax)
- dmax = d;
- }
- lua_pushnumber(L, dmax);
- return 1;
-}
-
-
-static int math_random (lua_State *L)
-{
- /* the `%' avoids the (rare) case of r==1, and is needed also because on
- some systems (SunOS!) `rand()' may return a value larger than RAND_MAX */
- lua_Number r = (lua_Number)(rand()%RAND_MAX) / (lua_Number)RAND_MAX;
- switch (lua_gettop(L)) { /* check number of arguments */
- case 0: { /* no arguments */
- lua_pushnumber(L, r); /* Number between 0 and 1 */
- break;
- }
- case 1: { /* only upper limit */
- int u = luaL_checkint(L, 1);
- luaL_argcheck(L, 1<=u, 1, "interval is empty");
- lua_pushnumber(L, (int)floor(r*u)+1); /* int between 1 and `u' */
- break;
- }
- case 2: { /* lower and upper limits */
- int l = luaL_checkint(L, 1);
- int u = luaL_checkint(L, 2);
- luaL_argcheck(L, l<=u, 2, "interval is empty");
- lua_pushnumber(L, (int)floor(r*(u-l+1))+l); /* int between `l' and `u' */
- break;
- }
- default: return luaL_error(L, "wrong number of arguments");
- }
- return 1;
-}
-
-
-static int math_randomseed (lua_State *L)
-{
- srand(luaL_checkint(L, 1));
- return 0;
-}
-
-
-static const luaL_reg mathlib[] = {
- {"abs", math_abs},
- {"sin", math_sin},
- {"cos", math_cos},
- {"tan", math_tan},
- {"asin", math_asin},
- {"acos", math_acos},
- {"atan", math_atan},
- {"atan2", math_atan2},
- {"ceil", math_ceil},
- {"floor", math_floor},
- {"mod", math_mod},
- {"frexp", math_frexp},
- {"ldexp", math_ldexp},
- {"sqrt", math_sqrt},
- {"min", math_min},
- {"max", math_max},
- {"log", math_log},
- {"log10", math_log10},
- {"exp", math_exp},
- {"deg", math_deg},
- {"pow", math_pow},
- {"rad", math_rad},
- {"random", math_random},
- {"randomseed", math_randomseed},
- {NULL, NULL}
-};
-
-
-/*
-** Open math library
-*/
-LUALIB_API int luaopen_math (lua_State *L) {
- luaL_openlib(L, LUA_MATHLIBNAME, mathlib, 0);
- lua_pushliteral(L, "pi");
- lua_pushnumber(L, PI);
- lua_settable(L, -3);
- lua_pushliteral(L, "__pow");
- lua_pushcfunction(L, math_pow);
- lua_settable(L, LUA_GLOBALSINDEX);
- return 1;
-}
-
+++ /dev/null
-/*
-** $Id: loadlib.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Dynamic library loader for Lua
-** See Copyright Notice in lua.h
-*
-* This Lua library exports a single function, called loadlib, which is
-* called from Lua as loadlib(lib,init), where lib is the full name of the
-* library to be loaded (including the complete path) and init is the name
-* of a function to be called after the library is loaded. Typically, this
-* function will register other functions, thus making the complete library
-* available to Lua. The init function is *not* automatically called by
-* loadlib. Instead, loadlib returns the init function as a Lua function
-* that the client can call when it thinks is appropriate. In the case of
-* errors, loadlib returns nil and two strings describing the error.
-* The first string is supplied by the operating system; it should be
-* informative and useful for error messages. The second string is "open",
-* "init", or "absent" to identify the error and is meant to be used for
-* making decisions without having to look into the first string (whose
-* format is system-dependent).
-*
-* This module contains an implementation of loadlib for Unix systems that
-* have dlfcn, an implementation for Windows, and a stub for other systems.
-* See the list at the end of this file for some links to available
-* implementations of dlfcn and interfaces to other native dynamic loaders
-* on top of which loadlib could be implemented.
-*
-*/
-
-#include "lua.h"
-#include "lauxlib.h"
-#include "lualib.h"
-
-
-#undef LOADLIB
-
-
-#ifdef USE_DLOPEN
-#define LOADLIB
-/*
-* This is an implementation of loadlib based on the dlfcn interface.
-* The dlfcn interface is available in Linux, SunOS, Solaris, IRIX, FreeBSD,
-* NetBSD, AIX 4.2, HPUX 11, and probably most other Unix flavors, at least
-* as an emulation layer on top of native functions.
-*/
-
-#include <dlfcn.h>
-
-static int loadlib(lua_State *L)
-{
- const char *path=luaL_checkstring(L,1);
- const char *init=luaL_checkstring(L,2);
- void *lib=dlopen(path,RTLD_NOW);
- if (lib!=NULL)
- {
- lua_CFunction f=(lua_CFunction) dlsym(lib,init);
- if (f!=NULL)
- {
- lua_pushlightuserdata(L,lib);
- lua_pushcclosure(L,f,1);
- return 1;
- }
- }
- /* else return appropriate error messages */
- lua_pushnil(L);
- lua_pushstring(L,dlerror());
- lua_pushstring(L,(lib!=NULL) ? "init" : "open");
- if (lib!=NULL) dlclose(lib);
- return 3;
-}
-
-#endif
-
-
-
-/*
-** In Windows, default is to use dll; otherwise, default is not to use dll
-*/
-#ifndef USE_DLL
-#ifdef _WIN32
-#define USE_DLL 1
-#else
-#define USE_DLL 0
-#endif
-#endif
-
-
-#if USE_DLL
-#define LOADLIB
-/*
-* This is an implementation of loadlib for Windows using native functions.
-*/
-
-#include <windows.h>
-
-static void pusherror(lua_State *L)
-{
- int error=GetLastError();
- char buffer[128];
- if (FormatMessage(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM,
- 0, error, 0, buffer, sizeof(buffer), 0))
- lua_pushstring(L,buffer);
- else
- lua_pushfstring(L,"system error %d\n",error);
-}
-
-static int loadlib(lua_State *L)
-{
- const char *path=luaL_checkstring(L,1);
- const char *init=luaL_checkstring(L,2);
- HINSTANCE lib=LoadLibrary(path);
- if (lib!=NULL)
- {
- lua_CFunction f=(lua_CFunction) GetProcAddress(lib,init);
- if (f!=NULL)
- {
- lua_pushlightuserdata(L,lib);
- lua_pushcclosure(L,f,1);
- return 1;
- }
- }
- lua_pushnil(L);
- pusherror(L);
- lua_pushstring(L,(lib!=NULL) ? "init" : "open");
- if (lib!=NULL) FreeLibrary(lib);
- return 3;
-}
-
-#endif
-
-
-
-#ifndef LOADLIB
-/* Fallback for other systems */
-
-/*
-** Those systems support dlopen, so they should have defined USE_DLOPEN.
-** The default (no)implementation gives them a special error message.
-*/
-#ifdef linux
-#define LOADLIB
-#endif
-
-#ifdef sun
-#define LOADLIB
-#endif
-
-#ifdef sgi
-#define LOADLIB
-#endif
-
-#ifdef BSD
-#define LOADLIB
-#endif
-
-#ifdef _WIN32
-#define LOADLIB
-#endif
-
-#ifdef LOADLIB
-#undef LOADLIB
-#define LOADLIB "`loadlib' not installed (check your Lua configuration)"
-#else
-#define LOADLIB "`loadlib' not supported"
-#endif
-
-static int loadlib(lua_State *L)
-{
- lua_pushnil(L);
- lua_pushliteral(L,LOADLIB);
- lua_pushliteral(L,"absent");
- return 3;
-}
-#endif
-
-LUALIB_API int luaopen_loadlib (lua_State *L)
-{
- lua_register(L,"loadlib",loadlib);
- return 0;
-}
-
-/*
-* Here are some links to available implementations of dlfcn and
-* interfaces to other native dynamic loaders on top of which loadlib
-* could be implemented. Please send contributions and corrections to us.
-*
-* AIX
-* Starting with AIX 4.2, dlfcn is included in the base OS.
-* There is also an emulation package available.
-* http://www.faqs.org/faqs/aix-faq/part4/section-21.html
-*
-* HPUX
-* HPUX 11 has dlfcn. For HPUX 10 use shl_*.
-* http://www.geda.seul.org/mailinglist/geda-dev37/msg00094.html
-* http://www.stat.umn.edu/~luke/xls/projects/dlbasics/dlbasics.html
-*
-* Macintosh, Windows
-* http://www.stat.umn.edu/~luke/xls/projects/dlbasics/dlbasics.html
-*
-* Mac OS X/Darwin
-* http://www.opendarwin.org/projects/dlcompat/
-*
-* GLIB has wrapper code for BeOS, OS2, Unix and Windows
-* http://cvs.gnome.org/lxr/source/glib/gmodule/
-*
-*/
+++ /dev/null
-/*
-** $Id: lstrlib.c,v 1.1 2004/03/16 21:58:30 niemeyer Exp $
-** Standard library for string operations and pattern-matching
-** See Copyright Notice in lua.h
-*/
-
-
-#include <ctype.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define lstrlib_c
-
-#include "lua.h"
-
-#include "lauxlib.h"
-#include "lualib.h"
-
-
-/* macro to `unsign' a character */
-#ifndef uchar
-#define uchar(c) ((unsigned char)(c))
-#endif
-
-
-typedef long sint32; /* a signed version for size_t */
-
-
-static int str_len (lua_State *L) {
- size_t l;
- luaL_checklstring(L, 1, &l);
- lua_pushnumber(L, (lua_Number)l);
- return 1;
-}
-
-
-static sint32 posrelat (sint32 pos, size_t len) {
- /* relative string position: negative means back from end */
- return (pos>=0) ? pos : (sint32)len+pos+1;
-}
-
-
-static int str_sub (lua_State *L) {
- size_t l;
- const char *s = luaL_checklstring(L, 1, &l);
- sint32 start = posrelat(luaL_checklong(L, 2), l);
- sint32 end = posrelat(luaL_optlong(L, 3, -1), l);
- if (start < 1) start = 1;
- if (end > (sint32)l) end = (sint32)l;
- if (start <= end)
- lua_pushlstring(L, s+start-1, end-start+1);
- else lua_pushliteral(L, "");
- return 1;
-}
-
-
-static int str_lower (lua_State *L) {
- size_t l;
- size_t i;
- luaL_Buffer b;
- const char *s = luaL_checklstring(L, 1, &l);
- luaL_buffinit(L, &b);
- for (i=0; i<l; i++)
- luaL_putchar(&b, tolower(uchar(s[i])));
- luaL_pushresult(&b);
- return 1;
-}
-
-
-static int str_upper (lua_State *L) {
- size_t l;
- size_t i;
- luaL_Buffer b;
- const char *s = luaL_checklstring(L, 1, &l);
- luaL_buffinit(L, &b);
- for (i=0; i<l; i++)
- luaL_putchar(&b, toupper(uchar(s[i])));
- luaL_pushresult(&b);
- return 1;
-}
-
-static int str_rep (lua_State *L) {
- size_t l;
- luaL_Buffer b;
- const char *s = luaL_checklstring(L, 1, &l);
- int n = luaL_checkint(L, 2);
- luaL_buffinit(L, &b);
- while (n-- > 0)
- luaL_addlstring(&b, s, l);
- luaL_pushresult(&b);
- return 1;
-}
-
-
-static int str_byte (lua_State *L) {
- size_t l;
- const char *s = luaL_checklstring(L, 1, &l);
- sint32 pos = posrelat(luaL_optlong(L, 2, 1), l);
- if (pos <= 0 || (size_t)(pos) > l) /* index out of range? */
- return 0; /* no answer */
- lua_pushnumber(L, uchar(s[pos-1]));
- return 1;
-}
-
-
-static int str_char (lua_State *L) {
- int n = lua_gettop(L); /* number of arguments */
- int i;
- luaL_Buffer b;
- luaL_buffinit(L, &b);
- for (i=1; i<=n; i++) {
- int c = luaL_checkint(L, i);
- luaL_argcheck(L, uchar(c) == c, i, "invalid value");
- luaL_putchar(&b, uchar(c));
- }
- luaL_pushresult(&b);
- return 1;
-}
-
-
-static int writer (lua_State *L, const void* b, size_t size, void* B) {
- (void)L;
- luaL_addlstring((luaL_Buffer*) B, (const char *)b, size);
- return 1;
-}
-
-
-static int str_dump (lua_State *L) {
- luaL_Buffer b;
- luaL_checktype(L, 1, LUA_TFUNCTION);
- luaL_buffinit(L,&b);
- if (!lua_dump(L, writer, &b))
- luaL_error(L, "unable to dump given function");
- luaL_pushresult(&b);
- return 1;
-}
-
-
-
-/*
-** {======================================================
-** PATTERN MATCHING
-** =======================================================
-*/
-
-#ifndef MAX_CAPTURES
-#define MAX_CAPTURES 32 /* arbitrary limit */
-#endif
-
-
-#define CAP_UNFINISHED (-1)
-#define CAP_POSITION (-2)
-
-typedef struct MatchState {
- const char *src_init; /* init of source string */
- const char *src_end; /* end (`\0') of source string */
- lua_State *L;
- int level; /* total number of captures (finished or unfinished) */
- struct {
- const char *init;
- sint32 len;
- } capture[MAX_CAPTURES];
-} MatchState;
-
-
-#define ESC '%'
-#define SPECIALS "^$*+?.([%-"
-
-
-static int check_capture (MatchState *ms, int l) {
- l -= '1';
- if (l < 0 || l >= ms->level || ms->capture[l].len == CAP_UNFINISHED)
- return luaL_error(ms->L, "invalid capture index");
- return l;
-}
-
-
-static int capture_to_close (MatchState *ms) {
- int level = ms->level;
- for (level--; level>=0; level--)
- if (ms->capture[level].len == CAP_UNFINISHED) return level;
- return luaL_error(ms->L, "invalid pattern capture");
-}
-
-
-static const char *luaI_classend (MatchState *ms, const char *p) {
- switch (*p++) {
- case ESC: {
- if (*p == '\0')
- luaL_error(ms->L, "malformed pattern (ends with `%')");
- return p+1;
- }
- case '[': {
- if (*p == '^') p++;
- do { /* look for a `]' */
- if (*p == '\0')
- luaL_error(ms->L, "malformed pattern (missing `]')");
- if (*(p++) == ESC && *p != '\0')
- p++; /* skip escapes (e.g. `%]') */
- } while (*p != ']');
- return p+1;
- }
- default: {
- return p;
- }
- }
-}
-
-
-static int match_class (int c, int cl) {
- int res;
- switch (tolower(cl)) {
- case 'a' : res = isalpha(c); break;
- case 'c' : res = iscntrl(c); break;
- case 'd' : res = isdigit(c); break;
- case 'l' : res = islower(c); break;
- case 'p' : res = ispunct(c); break;
- case 's' : res = isspace(c); break;
- case 'u' : res = isupper(c); break;
- case 'w' : res = isalnum(c); break;
- case 'x' : res = isxdigit(c); break;
- case 'z' : res = (c == 0); break;
- default: return (cl == c);
- }
- return (islower(cl) ? res : !res);
-}
-
-
-static int matchbracketclass (int c, const char *p, const char *ec) {
- int sig = 1;
- if (*(p+1) == '^') {
- sig = 0;
- p++; /* skip the `^' */
- }
- while (++p < ec) {
- if (*p == ESC) {
- p++;
- if (match_class(c, *p))
- return sig;
- }
- else if ((*(p+1) == '-') && (p+2 < ec)) {
- p+=2;
- if (uchar(*(p-2)) <= c && c <= uchar(*p))
- return sig;
- }
- else if (uchar(*p) == c) return sig;
- }
- return !sig;
-}
-
-
-static int luaI_singlematch (int c, const char *p, const char *ep) {
- switch (*p) {
- case '.': return 1; /* matches any char */
- case ESC: return match_class(c, *(p+1));
- case '[': return matchbracketclass(c, p, ep-1);
- default: return (uchar(*p) == c);
- }
-}
-
-
-static const char *match (MatchState *ms, const char *s, const char *p);
-
-
-static const char *matchbalance (MatchState *ms, const char *s,
- const char *p) {
- if (*p == 0 || *(p+1) == 0)
- luaL_error(ms->L, "unbalanced pattern");
- if (*s != *p) return NULL;
- else {
- int b = *p;
- int e = *(p+1);
- int cont = 1;
- while (++s < ms->src_end) {
- if (*s == e) {
- if (--cont == 0) return s+1;
- }
- else if (*s == b) cont++;
- }
- }
- return NULL; /* string ends out of balance */
-}
-
-
-static const char *max_expand (MatchState *ms, const char *s,
- const char *p, const char *ep) {
- sint32 i = 0; /* counts maximum expand for item */
- while ((s+i)<ms->src_end && luaI_singlematch(uchar(*(s+i)), p, ep))
- i++;
- /* keeps trying to match with the maximum repetitions */
- while (i>=0) {
- const char *res = match(ms, (s+i), ep+1);
- if (res) return res;
- i--; /* else didn't match; reduce 1 repetition to try again */
- }
- return NULL;
-}
-
-
-static const char *min_expand (MatchState *ms, const char *s,
- const char *p, const char *ep) {
- for (;;) {
- const char *res = match(ms, s, ep+1);
- if (res != NULL)
- return res;
- else if (s<ms->src_end && luaI_singlematch(uchar(*s), p, ep))
- s++; /* try with one more repetition */
- else return NULL;
- }
-}
-
-
-static const char *start_capture (MatchState *ms, const char *s,
- const char *p, int what) {
- const char *res;
- int level = ms->level;
- if (level >= MAX_CAPTURES) luaL_error(ms->L, "too many captures");
- ms->capture[level].init = s;
- ms->capture[level].len = what;
- ms->level = level+1;
- if ((res=match(ms, s, p)) == NULL) /* match failed? */
- ms->level--; /* undo capture */
- return res;
-}
-
-
-static const char *end_capture (MatchState *ms, const char *s,
- const char *p) {
- int l = capture_to_close(ms);
- const char *res;
- ms->capture[l].len = s - ms->capture[l].init; /* close capture */
- if ((res = match(ms, s, p)) == NULL) /* match failed? */
- ms->capture[l].len = CAP_UNFINISHED; /* undo capture */
- return res;
-}
-
-
-static const char *match_capture (MatchState *ms, const char *s, int l) {
- size_t len;
- l = check_capture(ms, l);
- len = ms->capture[l].len;
- if ((size_t)(ms->src_end-s) >= len &&
- memcmp(ms->capture[l].init, s, len) == 0)
- return s+len;
- else return NULL;
-}
-
-
-static const char *match (MatchState *ms, const char *s, const char *p) {
- init: /* using goto's to optimize tail recursion */
- switch (*p) {
- case '(': { /* start capture */
- if (*(p+1) == ')') /* position capture? */
- return start_capture(ms, s, p+2, CAP_POSITION);
- else
- return start_capture(ms, s, p+1, CAP_UNFINISHED);
- }
- case ')': { /* end capture */
- return end_capture(ms, s, p+1);
- }
- case ESC: {
- switch (*(p+1)) {
- case 'b': { /* balanced string? */
- s = matchbalance(ms, s, p+2);
- if (s == NULL) return NULL;
- p+=4; goto init; /* else return match(ms, s, p+4); */
- }
- case 'f': { /* frontier? */
- const char *ep; char previous;
- p += 2;
- if (*p != '[')
- luaL_error(ms->L, "missing `[' after `%%f' in pattern");
- ep = luaI_classend(ms, p); /* points to what is next */
- previous = (s == ms->src_init) ? '\0' : *(s-1);
- if (matchbracketclass(uchar(previous), p, ep-1) ||
- !matchbracketclass(uchar(*s), p, ep-1)) return NULL;
- p=ep; goto init; /* else return match(ms, s, ep); */
- }
- default: {
- if (isdigit(uchar(*(p+1)))) { /* capture results (%0-%9)? */
- s = match_capture(ms, s, *(p+1));
- if (s == NULL) return NULL;
- p+=2; goto init; /* else return match(ms, s, p+2) */
- }
- goto dflt; /* case default */
- }
- }
- }
- case '\0': { /* end of pattern */
- return s; /* match succeeded */
- }
- case '$': {
- if (*(p+1) == '\0') /* is the `$' the last char in pattern? */
- return (s == ms->src_end) ? s : NULL; /* check end of string */
- else goto dflt;
- }
- default: dflt: { /* it is a pattern item */
- const char *ep = luaI_classend(ms, p); /* points to what is next */
- int m = s<ms->src_end && luaI_singlematch(uchar(*s), p, ep);
- switch (*ep) {
- case '?': { /* optional */
- const char *res;
- if (m && ((res=match(ms, s+1, ep+1)) != NULL))
- return res;
- p=ep+1; goto init; /* else return match(ms, s, ep+1); */
- }
- case '*': { /* 0 or more repetitions */
- return max_expand(ms, s, p, ep);
- }
- case '+': { /* 1 or more repetitions */
- return (m ? max_expand(ms, s+1, p, ep) : NULL);
- }
- case '-': { /* 0 or more repetitions (minimum) */
- return min_expand(ms, s, p, ep);
- }
- default: {
- if (!m) return NULL;
- s++; p=ep; goto init; /* else return match(ms, s+1, ep); */
- }
- }
- }
- }
-}
-
-
-
-static const char *lmemfind (const char *s1, size_t l1,
- const char *s2, size_t l2) {
- if (l2 == 0) return s1; /* empty strings are everywhere */
- else if (l2 > l1) return NULL; /* avoids a negative `l1' */
- else {
- const char *init; /* to search for a `*s2' inside `s1' */
- l2--; /* 1st char will be checked by `memchr' */
- l1 = l1-l2; /* `s2' cannot be found after that */
- while (l1 > 0 && (init = (const char *)memchr(s1, *s2, l1)) != NULL) {
- init++; /* 1st char is already checked */
- if (memcmp(init, s2+1, l2) == 0)
- return init-1;
- else { /* correct `l1' and `s1' to try again */
- l1 -= init-s1;
- s1 = init;
- }
- }
- return NULL; /* not found */
- }
-}
-
-
-static void push_onecapture (MatchState *ms, int i) {
- int l = ms->capture[i].len;
- if (l == CAP_UNFINISHED) luaL_error(ms->L, "unfinished capture");
- if (l == CAP_POSITION)
- lua_pushnumber(ms->L, (lua_Number)(ms->capture[i].init - ms->src_init + 1));
- else
- lua_pushlstring(ms->L, ms->capture[i].init, l);
-}
-
-
-static int push_captures (MatchState *ms, const char *s, const char *e) {
- int i;
- luaL_checkstack(ms->L, ms->level, "too many captures");
- if (ms->level == 0 && s) { /* no explicit captures? */
- lua_pushlstring(ms->L, s, e-s); /* return whole match */
- return 1;
- }
- else { /* return all captures */
- for (i=0; i<ms->level; i++)
- push_onecapture(ms, i);
- return ms->level; /* number of strings pushed */
- }
-}
-
-
-static int str_find (lua_State *L) {
- size_t l1, l2;
- const char *s = luaL_checklstring(L, 1, &l1);
- const char *p = luaL_checklstring(L, 2, &l2);
- sint32 init = posrelat(luaL_optlong(L, 3, 1), l1) - 1;
- if (init < 0) init = 0;
- else if ((size_t)(init) > l1) init = (sint32)l1;
- if (lua_toboolean(L, 4) || /* explicit request? */
- strpbrk(p, SPECIALS) == NULL) { /* or no special characters? */
- /* do a plain search */
- const char *s2 = lmemfind(s+init, l1-init, p, l2);
- if (s2) {
- lua_pushnumber(L, (lua_Number)(s2-s+1));
- lua_pushnumber(L, (lua_Number)(s2-s+l2));
- return 2;
- }
- }
- else {
- MatchState ms;
- int anchor = (*p == '^') ? (p++, 1) : 0;
- const char *s1=s+init;
- ms.L = L;
- ms.src_init = s;
- ms.src_end = s+l1;
- do {
- const char *res;
- ms.level = 0;
- if ((res=match(&ms, s1, p)) != NULL) {
- lua_pushnumber(L, (lua_Number)(s1-s+1)); /* start */
- lua_pushnumber(L, (lua_Number)(res-s)); /* end */
- return push_captures(&ms, NULL, 0) + 2;
- }
- } while (s1++<ms.src_end && !anchor);
- }
- lua_pushnil(L); /* not found */
- return 1;
-}
-
-
-static int gfind_aux (lua_State *L) {
- MatchState ms;
- const char *s = lua_tostring(L, lua_upvalueindex(1));
- size_t ls = lua_strlen(L, lua_upvalueindex(1));
- const char *p = lua_tostring(L, lua_upvalueindex(2));
- const char *src;
- ms.L = L;
- ms.src_init = s;
- ms.src_end = s+ls;
- for (src = s + (size_t)lua_tonumber(L, lua_upvalueindex(3));
- src <= ms.src_end;
- src++) {
- const char *e;
- ms.level = 0;
- if ((e = match(&ms, src, p)) != NULL) {
- int newstart = e-s;
- if (e == src) newstart++; /* empty match? go at least one position */
- lua_pushnumber(L, (lua_Number)newstart);
- lua_replace(L, lua_upvalueindex(3));
- return push_captures(&ms, src, e);
- }
- }
- return 0; /* not found */
-}
-
-
-static int gfind (lua_State *L) {
- luaL_checkstring(L, 1);
- luaL_checkstring(L, 2);
- lua_settop(L, 2);
- lua_pushnumber(L, 0);
- lua_pushcclosure(L, gfind_aux, 3);
- return 1;
-}
-
-
-static void add_s (MatchState *ms, luaL_Buffer *b,
- const char *s, const char *e) {
- lua_State *L = ms->L;
- if (lua_isstring(L, 3)) {
- const char *news = lua_tostring(L, 3);
- size_t l = lua_strlen(L, 3);
- size_t i;
- for (i=0; i<l; i++) {
- if (news[i] != ESC)
- luaL_putchar(b, news[i]);
- else {
- i++; /* skip ESC */
- if (!isdigit(uchar(news[i])))
- luaL_putchar(b, news[i]);
- else {
- int level = check_capture(ms, news[i]);
- push_onecapture(ms, level);
- luaL_addvalue(b); /* add capture to accumulated result */
- }
- }
- }
- }
- else { /* is a function */
- int n;
- lua_pushvalue(L, 3);
- n = push_captures(ms, s, e);
- lua_call(L, n, 1);
- if (lua_isstring(L, -1))
- luaL_addvalue(b); /* add return to accumulated result */
- else
- lua_pop(L, 1); /* function result is not a string: pop it */
- }
-}
-
-
-static int str_gsub (lua_State *L) {
- size_t srcl;
- const char *src = luaL_checklstring(L, 1, &srcl);
- const char *p = luaL_checkstring(L, 2);
- int max_s = luaL_optint(L, 4, srcl+1);
- int anchor = (*p == '^') ? (p++, 1) : 0;
- int n = 0;
- MatchState ms;
- luaL_Buffer b;
- luaL_argcheck(L,
- lua_gettop(L) >= 3 && (lua_isstring(L, 3) || lua_isfunction(L, 3)),
- 3, "string or function expected");
- luaL_buffinit(L, &b);
- ms.L = L;
- ms.src_init = src;
- ms.src_end = src+srcl;
- while (n < max_s) {
- const char *e;
- ms.level = 0;
- e = match(&ms, src, p);
- if (e) {
- n++;
- add_s(&ms, &b, src, e);
- }
- if (e && e>src) /* non empty match? */
- src = e; /* skip it */
- else if (src < ms.src_end)
- luaL_putchar(&b, *src++);
- else break;
- if (anchor) break;
- }
- luaL_addlstring(&b, src, ms.src_end-src);
- luaL_pushresult(&b);
- lua_pushnumber(L, (lua_Number)n); /* number of substitutions */
- return 2;
-}
-
-/* }====================================================== */
-
-
-/* maximum size of each formatted item (> len(format('%99.99f', -1e308))) */
-#define MAX_ITEM 512
-/* maximum size of each format specification (such as '%-099.99d') */
-#define MAX_FORMAT 20
-
-
-static void luaI_addquoted (lua_State *L, luaL_Buffer *b, int arg) {
- size_t l;
- const char *s = luaL_checklstring(L, arg, &l);
- luaL_putchar(b, '"');
- while (l--) {
- switch (*s) {
- case '"': case '\\': case '\n': {
- luaL_putchar(b, '\\');
- luaL_putchar(b, *s);
- break;
- }
- case '\0': {
- luaL_addlstring(b, "\\000", 4);
- break;
- }
- default: {
- luaL_putchar(b, *s);
- break;
- }
- }
- s++;
- }
- luaL_putchar(b, '"');
-}
-
-
-static const char *scanformat (lua_State *L, const char *strfrmt,
- char *form, int *hasprecision) {
- const char *p = strfrmt;
- while (strchr("-+ #0", *p)) p++; /* skip flags */
- if (isdigit(uchar(*p))) p++; /* skip width */
- if (isdigit(uchar(*p))) p++; /* (2 digits at most) */
- if (*p == '.') {
- p++;
- *hasprecision = 1;
- if (isdigit(uchar(*p))) p++; /* skip precision */
- if (isdigit(uchar(*p))) p++; /* (2 digits at most) */
- }
- if (isdigit(uchar(*p)))
- luaL_error(L, "invalid format (width or precision too long)");
- if (p-strfrmt+2 > MAX_FORMAT) /* +2 to include `%' and the specifier */
- luaL_error(L, "invalid format (too long)");
- form[0] = '%';
- strncpy(form+1, strfrmt, p-strfrmt+1);
- form[p-strfrmt+2] = 0;
- return p;
-}
-
-
-static int str_format (lua_State *L) {
- int arg = 1;
- size_t sfl;
- const char *strfrmt = luaL_checklstring(L, arg, &sfl);
- const char *strfrmt_end = strfrmt+sfl;
- luaL_Buffer b;
- luaL_buffinit(L, &b);
- while (strfrmt < strfrmt_end) {
- if (*strfrmt != '%')
- luaL_putchar(&b, *strfrmt++);
- else if (*++strfrmt == '%')
- luaL_putchar(&b, *strfrmt++); /* %% */
- else { /* format item */
- char form[MAX_FORMAT]; /* to store the format (`%...') */
- char buff[MAX_ITEM]; /* to store the formatted item */
- int hasprecision = 0;
- if (isdigit(uchar(*strfrmt)) && *(strfrmt+1) == '$')
- return luaL_error(L, "obsolete option (d$) to `format'");
- arg++;
- strfrmt = scanformat(L, strfrmt, form, &hasprecision);
- switch (*strfrmt++) {
- case 'c': case 'd': case 'i': {
- sprintf(buff, form, luaL_checkint(L, arg));
- break;
- }
- case 'o': case 'u': case 'x': case 'X': {
- sprintf(buff, form, (unsigned int)(luaL_checknumber(L, arg)));
- break;
- }
- case 'e': case 'E': case 'f':
- case 'g': case 'G': {
- sprintf(buff, form, luaL_checknumber(L, arg));
- break;
- }
- case 'q': {
- luaI_addquoted(L, &b, arg);
- continue; /* skip the `addsize' at the end */
- }
- case 's': {
- size_t l;
- const char *s = luaL_checklstring(L, arg, &l);
- if (!hasprecision && l >= 100) {
- /* no precision and string is too long to be formatted;
- keep original string */
- lua_pushvalue(L, arg);
- luaL_addvalue(&b);
- continue; /* skip the `addsize' at the end */
- }
- else {
- sprintf(buff, form, s);
- break;
- }
- }
- default: { /* also treat cases `pnLlh' */
- return luaL_error(L, "invalid option to `format'");
- }
- }
- luaL_addlstring(&b, buff, strlen(buff));
- }
- }
- luaL_pushresult(&b);
- return 1;
-}
-
-
-static const luaL_reg strlib[] = {
- {"len", str_len},
- {"sub", str_sub},
- {"lower", str_lower},
- {"upper", str_upper},
- {"char", str_char},
- {"rep", str_rep},
- {"byte", str_byte},
- {"format", str_format},
- {"dump", str_dump},
- {"find", str_find},
- {"gfind", gfind},
- {"gsub", str_gsub},
- {NULL, NULL}
-};
-
-
-/*
-** Open string library
-*/
-LUALIB_API int luaopen_string (lua_State *L) {
- luaL_openlib(L, LUA_STRLIBNAME, strlib, 0);
- return 1;
-}
-
+++ /dev/null
-/*
-** $Id: ltablib.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Library for Table Manipulation
-** See Copyright Notice in lua.h
-*/
-
-
-#include <stddef.h>
-
-#define ltablib_c
-
-#include "lua.h"
-
-#include "lauxlib.h"
-#include "lualib.h"
-
-
-#define aux_getn(L,n) (luaL_checktype(L, n, LUA_TTABLE), luaL_getn(L, n))
-
-
-static int luaB_foreachi (lua_State *L)
-{
- int i;
- int n = aux_getn(L, 1);
- luaL_checktype(L, 2, LUA_TFUNCTION);
- for (i=1; i<=n; i++) {
- lua_pushvalue(L, 2); /* function */
- lua_pushnumber(L, (lua_Number)i); /* 1st argument */
- lua_rawgeti(L, 1, i); /* 2nd argument */
- lua_call(L, 2, 1);
- if (!lua_isnil(L, -1))
- return 1;
- lua_pop(L, 1); /* remove nil result */
- }
- return 0;
-}
-
-
-static int luaB_foreach (lua_State *L)
-{
- luaL_checktype(L, 1, LUA_TTABLE);
- luaL_checktype(L, 2, LUA_TFUNCTION);
- lua_pushnil(L); /* first key */
- for (;;) {
- if (lua_next(L, 1) == 0)
- return 0;
- lua_pushvalue(L, 2); /* function */
- lua_pushvalue(L, -3); /* key */
- lua_pushvalue(L, -3); /* value */
- lua_call(L, 2, 1);
- if (!lua_isnil(L, -1))
- return 1;
- lua_pop(L, 2); /* remove value and result */
- }
-}
-
-
-static int luaB_getn (lua_State *L)
-{
- lua_pushnumber(L, (lua_Number)aux_getn(L, 1));
- return 1;
-}
-
-
-static int luaB_setn (lua_State *L)
-{
- luaL_checktype(L, 1, LUA_TTABLE);
- luaL_setn(L, 1, luaL_checkint(L, 2));
- return 0;
-}
-
-
-static int luaB_tinsert (lua_State *L)
-{
- int v = lua_gettop(L); /* number of arguments */
- int n = aux_getn(L, 1) + 1;
- int pos; /* where to insert new element */
- if (v == 2) /* called with only 2 arguments */
- pos = n; /* insert new element at the end */
- else {
- pos = luaL_checkint(L, 2); /* 2nd argument is the position */
- if (pos > n) n = pos; /* `grow' array if necessary */
- v = 3; /* function may be called with more than 3 args */
- }
- luaL_setn(L, 1, n); /* new size */
- while (--n >= pos) { /* move up elements */
- lua_rawgeti(L, 1, n);
- lua_rawseti(L, 1, n+1); /* t[n+1] = t[n] */
- }
- lua_pushvalue(L, v);
- lua_rawseti(L, 1, pos); /* t[pos] = v */
- return 0;
-}
-
-
-static int luaB_tremove (lua_State *L)
-{
- int n = aux_getn(L, 1);
- int pos = luaL_optint(L, 2, n);
- if (n <= 0) return 0; /* table is `empty' */
- luaL_setn(L, 1, n-1); /* t.n = n-1 */
- lua_rawgeti(L, 1, pos); /* result = t[pos] */
- for ( ;pos<n; pos++) {
- lua_rawgeti(L, 1, pos+1);
- lua_rawseti(L, 1, pos); /* t[pos] = t[pos+1] */
- }
- lua_pushnil(L);
- lua_rawseti(L, 1, n); /* t[n] = nil */
- return 1;
-}
-
-
-static int str_concat (lua_State *L)
-{
- luaL_Buffer b;
- size_t lsep;
- const char *sep = luaL_optlstring(L, 2, "", &lsep);
- int i = luaL_optint(L, 3, 1);
- int n = luaL_optint(L, 4, 0);
- luaL_checktype(L, 1, LUA_TTABLE);
- if (n == 0) n = luaL_getn(L, 1);
- luaL_buffinit(L, &b);
- for (; i <= n; i++) {
- lua_rawgeti(L, 1, i);
- luaL_argcheck(L, lua_isstring(L, -1), 1, "table contains non-strings");
- luaL_addvalue(&b);
- if (i != n)
- luaL_addlstring(&b, sep, lsep);
- }
- luaL_pushresult(&b);
- return 1;
-}
-
-
-
-/*
-** {======================================================
-** Quicksort
-** (based on `Algorithms in MODULA-3', Robert Sedgewick;
-** Addison-Wesley, 1993.)
-*/
-
-
-static void set2 (lua_State *L, int i, int j)
-{
- lua_rawseti(L, 1, i);
- lua_rawseti(L, 1, j);
-}
-
-static int sort_comp (lua_State *L, int a, int b)
-{
- if (!lua_isnil(L, 2)) { /* function? */
- int res;
- lua_pushvalue(L, 2);
- lua_pushvalue(L, a-1); /* -1 to compensate function */
- lua_pushvalue(L, b-2); /* -2 to compensate function and `a' */
- lua_call(L, 2, 1);
- res = lua_toboolean(L, -1);
- lua_pop(L, 1);
- return res;
- }
- else /* a < b? */
- return lua_lessthan(L, a, b);
-}
-
-static void auxsort (lua_State *L, int l, int u)
-{
- while (l < u) { /* for tail recursion */
- int i, j;
- /* sort elements a[l], a[(l+u)/2] and a[u] */
- lua_rawgeti(L, 1, l);
- lua_rawgeti(L, 1, u);
- if (sort_comp(L, -1, -2)) /* a[u] < a[l]? */
- set2(L, l, u); /* swap a[l] - a[u] */
- else
- lua_pop(L, 2);
- if (u-l == 1) break; /* only 2 elements */
- i = (l+u)/2;
- lua_rawgeti(L, 1, i);
- lua_rawgeti(L, 1, l);
- if (sort_comp(L, -2, -1)) /* a[i]<a[l]? */
- set2(L, i, l);
- else {
- lua_pop(L, 1); /* remove a[l] */
- lua_rawgeti(L, 1, u);
- if (sort_comp(L, -1, -2)) /* a[u]<a[i]? */
- set2(L, i, u);
- else
- lua_pop(L, 2);
- }
- if (u-l == 2) break; /* only 3 elements */
- lua_rawgeti(L, 1, i); /* Pivot */
- lua_pushvalue(L, -1);
- lua_rawgeti(L, 1, u-1);
- set2(L, i, u-1);
- /* a[l] <= P == a[u-1] <= a[u], only need to sort from l+1 to u-2 */
- i = l; j = u-1;
- for (;;) { /* invariant: a[l..i] <= P <= a[j..u] */
- /* repeat ++i until a[i] >= P */
- while (lua_rawgeti(L, 1, ++i), sort_comp(L, -1, -2)) {
- if (i>u) luaL_error(L, "invalid order function for sorting");
- lua_pop(L, 1); /* remove a[i] */
- }
- /* repeat --j until a[j] <= P */
- while (lua_rawgeti(L, 1, --j), sort_comp(L, -3, -1)) {
- if (j<l) luaL_error(L, "invalid order function for sorting");
- lua_pop(L, 1); /* remove a[j] */
- }
- if (j<i) {
- lua_pop(L, 3); /* pop pivot, a[i], a[j] */
- break;
- }
- set2(L, i, j);
- }
- lua_rawgeti(L, 1, u-1);
- lua_rawgeti(L, 1, i);
- set2(L, u-1, i); /* swap pivot (a[u-1]) with a[i] */
- /* a[l..i-1] <= a[i] == P <= a[i+1..u] */
- /* adjust so that smaller half is in [j..i] and larger one in [l..u] */
- if (i-l < u-i) {
- j=l; i=i-1; l=i+2;
- }
- else {
- j=i+1; i=u; u=j-2;
- }
- auxsort(L, j, i); /* call recursively the smaller one */
- } /* repeat the routine for the larger one */
-}
-
-static int luaB_sort (lua_State *L)
-{
- int n = aux_getn(L, 1);
- luaL_checkstack(L, 40, ""); /* assume array is smaller than 2^40 */
- if (!lua_isnoneornil(L, 2)) /* is there a 2nd argument? */
- luaL_checktype(L, 2, LUA_TFUNCTION);
- lua_settop(L, 2); /* make sure there is two arguments */
- auxsort(L, 1, n);
- return 0;
-}
-
-/* }====================================================== */
-
-
-static const luaL_reg tab_funcs[] = {
- {"concat", str_concat},
- {"foreach", luaB_foreach},
- {"foreachi", luaB_foreachi},
- {"getn", luaB_getn},
- {"setn", luaB_setn},
- {"sort", luaB_sort},
- {"insert", luaB_tinsert},
- {"remove", luaB_tremove},
- {NULL, NULL}
-};
-
-
-LUALIB_API int luaopen_table (lua_State *L) {
- luaL_openlib(L, LUA_TABLIBNAME, tab_funcs, 0);
- return 1;
-}
-
+++ /dev/null
-/*
-** $Id: llex.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Lexical Analyzer
-** See Copyright Notice in lua.h
-*/
-
-
-#include <ctype.h>
-#include <string.h>
-
-#define llex_c
-
-#include "lua.h"
-
-#include "ldo.h"
-#include "llex.h"
-#include "lobject.h"
-#include "lparser.h"
-#include "lstate.h"
-#include "lstring.h"
-#include "lzio.h"
-
-
-
-#define next(LS) (LS->current = zgetc(LS->z))
-
-
-
-/* ORDER RESERVED */
-static const char *const token2string [] = {
- "and", "break", "do", "else", "elseif",
- "end", "false", "for", "function", "if",
- "in", "local", "nil", "not", "or", "repeat",
- "return", "then", "true", "until", "while", "*name",
- "..", "...", "==", ">=", "<=", "~=",
- "*number", "*string", "<eof>"
-};
-
-
-void luaX_init (lua_State *L) {
- int i;
- for (i=0; i<NUM_RESERVED; i++) {
- TString *ts = luaS_new(L, token2string[i]);
- luaS_fix(ts); /* reserved words are never collected */
- lua_assert(strlen(token2string[i])+1 <= TOKEN_LEN);
- ts->tsv.reserved = cast(lu_byte, i+1); /* reserved word */
- }
-}
-
-
-#define MAXSRC 80
-
-
-void luaX_checklimit (LexState *ls, int val, int limit, const char *msg) {
- if (val > limit) {
- msg = luaO_pushfstring(ls->L, "too many %s (limit=%d)", msg, limit);
- luaX_syntaxerror(ls, msg);
- }
-}
-
-
-void luaX_errorline (LexState *ls, const char *s, const char *token, int line) {
- lua_State *L = ls->L;
- char buff[MAXSRC];
- luaO_chunkid(buff, getstr(ls->source), MAXSRC);
- luaO_pushfstring(L, "%s:%d: %s near `%s'", buff, line, s, token);
- luaD_throw(L, LUA_ERRSYNTAX);
-}
-
-
-static void luaX_error (LexState *ls, const char *s, const char *token)
-{
- luaX_errorline(ls, s, token, ls->linenumber);
-}
-
-
-void luaX_syntaxerror (LexState *ls, const char *msg) {
- const char *lasttoken;
- switch (ls->t.token) {
- case TK_NAME:
- lasttoken = getstr(ls->t.seminfo.ts);
- break;
- case TK_STRING:
- case TK_NUMBER:
- lasttoken = luaZ_buffer(ls->buff);
- break;
- default:
- lasttoken = luaX_token2str(ls, ls->t.token);
- break;
- }
- luaX_error(ls, msg, lasttoken);
-}
-
-
-const char *luaX_token2str (LexState *ls, int token) {
- if (token < FIRST_RESERVED) {
- lua_assert(token == (unsigned char)token);
- return luaO_pushfstring(ls->L, "%c", token);
- }
- else
- return token2string[token-FIRST_RESERVED];
-}
-
-
-static void luaX_lexerror (LexState *ls, const char *s, int token)
-{
- if (token == TK_EOS)
- luaX_error(ls, s, luaX_token2str(ls, token));
- else
- luaX_error(ls, s, luaZ_buffer(ls->buff));
-}
-
-
-static void inclinenumber (LexState *LS)
-{
- next(LS); /* skip `\n' */
- ++LS->linenumber;
- luaX_checklimit(LS, LS->linenumber, MAX_INT, "lines in a chunk");
-}
-
-
-void luaX_setinput (lua_State *L, LexState *LS, ZIO *z, TString *source) {
- LS->L = L;
- LS->lookahead.token = TK_EOS; /* no look-ahead token */
- LS->z = z;
- LS->fs = NULL;
- LS->linenumber = 1;
- LS->lastline = 1;
- LS->source = source;
- next(LS); /* read first char */
- if (LS->current == '#') {
- do { /* skip first line */
- next(LS);
- } while (LS->current != '\n' && LS->current != EOZ);
- }
-}
-
-
-
-/*
-** =======================================================
-** LEXICAL ANALYZER
-** =======================================================
-*/
-
-
-/* use buffer to store names, literal strings and numbers */
-
-/* extra space to allocate when growing buffer */
-#define EXTRABUFF 32
-
-/* maximum number of chars that can be read without checking buffer size */
-#define MAXNOCHECK 5
-
-#define checkbuffer(LS, len) \
- if (((len)+MAXNOCHECK)*sizeof(char) > luaZ_sizebuffer((LS)->buff)) \
- luaZ_openspace((LS)->L, (LS)->buff, (len)+EXTRABUFF)
-
-#define save(LS, c, l) \
- (luaZ_buffer((LS)->buff)[l++] = cast(char, c))
-#define save_and_next(LS, l) (save(LS, LS->current, l), next(LS))
-
-
-static size_t readname (LexState *LS)
-{
- size_t l = 0;
- checkbuffer(LS, l);
- do {
- checkbuffer(LS, l);
- save_and_next(LS, l);
- } while (isalnum(LS->current) || LS->current == '_');
- save(LS, '\0', l);
- return l-1;
-}
-
-
-/* LUA_NUMBER */
-static void read_numeral (LexState *LS, int comma, SemInfo *seminfo)
-{
- size_t l = 0;
- checkbuffer(LS, l);
- if (comma) save(LS, '.', l);
- while (isdigit(LS->current)) {
- checkbuffer(LS, l);
- save_and_next(LS, l);
- }
- if (LS->current == '.') {
- save_and_next(LS, l);
- if (LS->current == '.') {
- save_and_next(LS, l);
- save(LS, '\0', l);
- luaX_lexerror(LS,
- "ambiguous syntax (decimal point x string concatenation)",
- TK_NUMBER);
- }
- }
- while (isdigit(LS->current)) {
- checkbuffer(LS, l);
- save_and_next(LS, l);
- }
- if (LS->current == 'e' || LS->current == 'E') {
- save_and_next(LS, l); /* read `E' */
- if (LS->current == '+' || LS->current == '-')
- save_and_next(LS, l); /* optional exponent sign */
- while (isdigit(LS->current)) {
- checkbuffer(LS, l);
- save_and_next(LS, l);
- }
- }
- save(LS, '\0', l);
- if (!luaO_str2d(luaZ_buffer(LS->buff), &seminfo->r))
- luaX_lexerror(LS, "malformed number", TK_NUMBER);
-}
-
-
-static void read_long_string (LexState *LS, SemInfo *seminfo)
-{
- int cont = 0;
- size_t l = 0;
- checkbuffer(LS, l);
- save(LS, '[', l); /* save first `[' */
- save_and_next(LS, l); /* pass the second `[' */
- if (LS->current == '\n') /* string starts with a newline? */
- inclinenumber(LS); /* skip it */
- for (;;) {
- checkbuffer(LS, l);
- switch (LS->current) {
- case EOZ:
- save(LS, '\0', l);
- luaX_lexerror(LS, (seminfo) ? "unfinished long string" :
- "unfinished long comment", TK_EOS);
- break; /* to avoid warnings */
- case '[':
- save_and_next(LS, l);
- if (LS->current == '[') {
- cont++;
- save_and_next(LS, l);
- }
- continue;
- case ']':
- save_and_next(LS, l);
- if (LS->current == ']') {
- if (cont == 0) goto endloop;
- cont--;
- save_and_next(LS, l);
- }
- continue;
- case '\n':
- save(LS, '\n', l);
- inclinenumber(LS);
- if (!seminfo) l = 0; /* reset buffer to avoid wasting space */
- continue;
- default:
- save_and_next(LS, l);
- }
- } endloop:
- save_and_next(LS, l); /* skip the second `]' */
- save(LS, '\0', l);
- if (seminfo)
- seminfo->ts = luaS_newlstr(LS->L, luaZ_buffer(LS->buff) + 2, l - 5);
-}
-
-
-static void read_string (LexState *LS, int del, SemInfo *seminfo)
-{
- size_t l = 0;
- checkbuffer(LS, l);
- save_and_next(LS, l);
- while (LS->current != del) {
- checkbuffer(LS, l);
- switch (LS->current) {
- case EOZ:
- save(LS, '\0', l);
- luaX_lexerror(LS, "unfinished string", TK_EOS);
- break; /* to avoid warnings */
- case '\n':
- save(LS, '\0', l);
- luaX_lexerror(LS, "unfinished string", TK_STRING);
- break; /* to avoid warnings */
- case '\\':
- next(LS); /* do not save the `\' */
- switch (LS->current) {
- case 'a': save(LS, '\a', l); next(LS); break;
- case 'b': save(LS, '\b', l); next(LS); break;
- case 'f': save(LS, '\f', l); next(LS); break;
- case 'n': save(LS, '\n', l); next(LS); break;
- case 'r': save(LS, '\r', l); next(LS); break;
- case 't': save(LS, '\t', l); next(LS); break;
- case 'v': save(LS, '\v', l); next(LS); break;
- case '\n': save(LS, '\n', l); inclinenumber(LS); break;
- case EOZ: break; /* will raise an error next loop */
- default: {
- if (!isdigit(LS->current))
- save_and_next(LS, l); /* handles \\, \", \', and \? */
- else { /* \xxx */
- int c = 0;
- int i = 0;
- do {
- c = 10*c + (LS->current-'0');
- next(LS);
- } while (++i<3 && isdigit(LS->current));
- if (c > UCHAR_MAX) {
- save(LS, '\0', l);
- luaX_lexerror(LS, "escape sequence too large", TK_STRING);
- }
- save(LS, c, l);
- }
- }
- }
- break;
- default:
- save_and_next(LS, l);
- }
- }
- save_and_next(LS, l); /* skip delimiter */
- save(LS, '\0', l);
- seminfo->ts = luaS_newlstr(LS->L, luaZ_buffer(LS->buff) + 1, l - 3);
-}
-
-
-int luaX_lex (LexState *LS, SemInfo *seminfo) {
- for (;;) {
- switch (LS->current) {
-
- case '\n': {
- inclinenumber(LS);
- continue;
- }
- case '-': {
- next(LS);
- if (LS->current != '-') return '-';
- /* else is a comment */
- next(LS);
- if (LS->current == '[' && (next(LS), LS->current == '['))
- read_long_string(LS, NULL); /* long comment */
- else /* short comment */
- while (LS->current != '\n' && LS->current != EOZ)
- next(LS);
- continue;
- }
- case '[': {
- next(LS);
- if (LS->current != '[') return '[';
- else {
- read_long_string(LS, seminfo);
- return TK_STRING;
- }
- }
- case '=': {
- next(LS);
- if (LS->current != '=') return '=';
- else { next(LS); return TK_EQ; }
- }
- case '<': {
- next(LS);
- if (LS->current != '=') return '<';
- else { next(LS); return TK_LE; }
- }
- case '>': {
- next(LS);
- if (LS->current != '=') return '>';
- else { next(LS); return TK_GE; }
- }
- case '~': {
- next(LS);
- if (LS->current != '=') return '~';
- else { next(LS); return TK_NE; }
- }
- case '"':
- case '\'': {
- read_string(LS, LS->current, seminfo);
- return TK_STRING;
- }
- case '.': {
- next(LS);
- if (LS->current == '.') {
- next(LS);
- if (LS->current == '.') {
- next(LS);
- return TK_DOTS; /* ... */
- }
- else return TK_CONCAT; /* .. */
- }
- else if (!isdigit(LS->current)) return '.';
- else {
- read_numeral(LS, 1, seminfo);
- return TK_NUMBER;
- }
- }
- case EOZ: {
- return TK_EOS;
- }
- default: {
- if (isspace(LS->current)) {
- next(LS);
- continue;
- }
- else if (isdigit(LS->current)) {
- read_numeral(LS, 0, seminfo);
- return TK_NUMBER;
- }
- else if (isalpha(LS->current) || LS->current == '_') {
- /* identifier or reserved word */
- size_t l = readname(LS);
- TString *ts = luaS_newlstr(LS->L, luaZ_buffer(LS->buff), l);
- if (ts->tsv.reserved > 0) /* reserved word? */
- return ts->tsv.reserved - 1 + FIRST_RESERVED;
- seminfo->ts = ts;
- return TK_NAME;
- }
- else {
- int c = LS->current;
- if (iscntrl(c))
- luaX_error(LS, "invalid control char",
- luaO_pushfstring(LS->L, "char(%d)", c));
- next(LS);
- return c; /* single-char tokens (+ - / ...) */
- }
- }
- }
- }
-}
-
-#undef next
+++ /dev/null
-/*
-** $Id: llex.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Lexical Analyzer
-** See Copyright Notice in lua.h
-*/
-
-#ifndef llex_h
-#define llex_h
-
-#include "lobject.h"
-#include "lzio.h"
-
-
-#define FIRST_RESERVED 257
-
-/* maximum length of a reserved word */
-#define TOKEN_LEN (sizeof("function")/sizeof(char))
-
-
-/*
-* WARNING: if you change the order of this enumeration,
-* grep "ORDER RESERVED"
-*/
-enum RESERVED {
- /* terminal symbols denoted by reserved words */
- TK_AND = FIRST_RESERVED, TK_BREAK,
- TK_DO, TK_ELSE, TK_ELSEIF, TK_END, TK_FALSE, TK_FOR, TK_FUNCTION,
- TK_IF, TK_IN, TK_LOCAL, TK_NIL, TK_NOT, TK_OR, TK_REPEAT,
- TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE,
- /* other terminal symbols */
- TK_NAME, TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE, TK_NUMBER,
- TK_STRING, TK_EOS
-};
-
-/* number of reserved words */
-#define NUM_RESERVED (cast(int, TK_WHILE-FIRST_RESERVED+1))
-
-
-typedef union {
- lua_Number r;
- TString *ts;
-} SemInfo; /* semantics information */
-
-
-typedef struct Token {
- int token;
- SemInfo seminfo;
-} Token;
-
-
-typedef struct LexState {
- int current; /* current character (charint) */
- int linenumber; /* input line counter */
- int lastline; /* line of last token `consumed' */
- Token t; /* current token */
- Token lookahead; /* look ahead token */
- struct FuncState *fs; /* `FuncState' is private to the parser */
- struct lua_State *L;
- ZIO *z; /* input stream */
- Mbuffer *buff; /* buffer for tokens */
- TString *source; /* current source name */
- int nestlevel; /* level of nested non-terminals */
-} LexState;
-
-
-void luaX_init (lua_State *L);
-void luaX_setinput (lua_State *L, LexState *LS, ZIO *z, TString *source);
-int luaX_lex (LexState *LS, SemInfo *seminfo);
-void luaX_checklimit (LexState *ls, int val, int limit, const char *msg);
-void luaX_syntaxerror (LexState *ls, const char *s);
-void luaX_errorline (LexState *ls, const char *s, const char *token, int line);
-const char *luaX_token2str (LexState *ls, int token);
-
-
-#endif
+++ /dev/null
-/*
-** $Id: llimits.h,v 1.1 2004/03/16 21:58:30 niemeyer Exp $
-** Limits, basic types, and some other `installation-dependent' definitions
-** See Copyright Notice in lua.h
-*/
-
-#ifndef llimits_h
-#define llimits_h
-
-
-#include <limits.h>
-#include <stddef.h>
-
-
-#include "lua.h"
-
-
-/*
-** try to find number of bits in an integer
-*/
-#ifndef BITS_INT
-/* avoid overflows in comparison */
-#if INT_MAX-20 < 32760
-#define BITS_INT 16
-#else
-#if INT_MAX > 2147483640L
-/* machine has at least 32 bits */
-#define BITS_INT 32
-#else
-#error "you must define BITS_INT with number of bits in an integer"
-#endif
-#endif
-#endif
-
-
-/*
-** the following types define integer types for values that may not
-** fit in a `small int' (16 bits), but may waste space in a
-** `large long' (64 bits). The current definitions should work in
-** any machine, but may not be optimal.
-*/
-
-/* an unsigned integer to hold hash values */
-typedef unsigned int lu_hash;
-/* its signed equivalent */
-typedef int ls_hash;
-
-/* an unsigned integer big enough to count the total memory used by Lua; */
-/* it should be at least as large as size_t */
-typedef unsigned long lu_mem;
-
-#define MAX_LUMEM ULONG_MAX
-
-
-/* an integer big enough to count the number of strings in use */
-typedef long ls_nstr;
-
-/* chars used as small naturals (so that `char' is reserved for characters) */
-typedef unsigned char lu_byte;
-
-
-#define MAX_SIZET ((size_t)(~(size_t)0)-2)
-
-
-#define MAX_INT (INT_MAX-2) /* maximum value of an int (-2 for safety) */
-
-/*
-** conversion of pointer to integer
-** this is for hashing only; there is no problem if the integer
-** cannot hold the whole pointer value
-*/
-#define IntPoint(p) ((lu_hash)(p))
-
-
-
-/* type to ensure maximum alignment */
-#ifndef LUSER_ALIGNMENT_T
-typedef union { double u; void *s; long l; } L_Umaxalign;
-#else
-typedef LUSER_ALIGNMENT_T L_Umaxalign;
-#endif
-
-
-/* result of `usual argument conversion' over lua_Number */
-#ifndef LUA_UACNUMBER
-typedef double l_uacNumber;
-#else
-typedef LUA_UACNUMBER l_uacNumber;
-#endif
-
-
-#ifndef lua_assert
-#define lua_assert(c) /* empty */
-#endif
-
-
-#ifndef check_exp
-#define check_exp(c,e) (e)
-#endif
-
-
-#ifndef UNUSED
-#define UNUSED(x) ((void)(x)) /* to avoid warnings */
-#endif
-
-
-#ifndef cast
-#define cast(t, exp) ((t)(exp))
-#endif
-
-
-
-/*
-** type for virtual-machine instructions
-** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h)
-*/
-typedef unsigned long Instruction;
-
-
-/* maximum depth for calls (unsigned short) */
-#ifndef LUA_MAXCALLS
-#define LUA_MAXCALLS 4096
-#endif
-
-
-/*
-** maximum depth for C calls (unsigned short): Not too big, or may
-** overflow the C stack...
-*/
-
-#ifndef LUA_MAXCCALLS
-#define LUA_MAXCCALLS 200
-#endif
-
-
-/* maximum size for the C stack */
-#ifndef LUA_MAXCSTACK
-#define LUA_MAXCSTACK 2048
-#endif
-
-
-/* maximum stack for a Lua function */
-#define MAXSTACK 250
-
-
-/* maximum number of variables declared in a function */
-#ifndef MAXVARS
-#define MAXVARS 200 /* arbitrary limit (<MAXSTACK) */
-#endif
-
-
-/* maximum number of upvalues per function */
-#ifndef MAXUPVALUES
-#define MAXUPVALUES 32
-#endif
-
-
-/* maximum number of parameters in a function */
-#ifndef MAXPARAMS
-#define MAXPARAMS 100 /* arbitrary limit (<MAXLOCALS) */
-#endif
-
-
-/* minimum size for the string table (must be power of 2) */
-#ifndef MINSTRTABSIZE
-#define MINSTRTABSIZE 32
-#endif
-
-
-/* minimum size for string buffer */
-#ifndef LUA_MINBUFFER
-#define LUA_MINBUFFER 32
-#endif
-
-
-/*
-** maximum number of syntactical nested non-terminals: Not too big,
-** or may overflow the C stack...
-*/
-#ifndef LUA_MAXPARSERLEVEL
-#define LUA_MAXPARSERLEVEL 200
-#endif
-
-
-#endif
+++ /dev/null
-/*
-** $Id: lmem.c,v 1.1 2004/03/16 21:58:30 niemeyer Exp $
-** Interface to Memory Manager
-** See Copyright Notice in lua.h
-*/
-
-
-#include <stdlib.h>
-
-#define lmem_c
-
-#include "lua.h"
-
-#include "ldebug.h"
-#include "ldo.h"
-#include "lmem.h"
-#include "lobject.h"
-#include "lstate.h"
-
-
-
-/*
-** definition for realloc function. It must assure that l_realloc(NULL,
-** 0, x) allocates a new block (ANSI C assures that). (`os' is the old
-** block size; some allocators may use that.)
-*/
-#ifndef l_realloc
-#define l_realloc(b,os,s) realloc(b,s)
-#endif
-
-/*
-** definition for free function. (`os' is the old block size; some
-** allocators may use that.)
-*/
-#ifndef l_free
-#define l_free(b,os) free(b)
-#endif
-
-
-#define MINSIZEARRAY 4
-
-
-void *luaM_growaux (lua_State *L, void *block, int *size, int size_elems,
- int limit, const char *errormsg) {
- void *newblock;
- int newsize = (*size)*2;
- if (newsize < MINSIZEARRAY)
- newsize = MINSIZEARRAY; /* minimum size */
- else if (*size >= limit/2) { /* cannot double it? */
- if (*size < limit - MINSIZEARRAY) /* try something smaller... */
- newsize = limit; /* still have at least MINSIZEARRAY free places */
- else luaG_runerror(L, errormsg);
- }
- newblock = luaM_realloc(L, block,
- cast(lu_mem, *size)*cast(lu_mem, size_elems),
- cast(lu_mem, newsize)*cast(lu_mem, size_elems));
- *size = newsize; /* update only when everything else is OK */
- return newblock;
-}
-
-
-/*
-** generic allocation routine.
-*/
-void *luaM_realloc (lua_State *L, void *block, lu_mem oldsize, lu_mem size) {
- lua_assert((oldsize == 0) == (block == NULL));
- if (size == 0) {
- if (block != NULL) {
- l_free(block, oldsize);
- block = NULL;
- }
- else return NULL; /* avoid `nblocks' computations when oldsize==size==0 */
- }
- else if (size >= MAX_SIZET)
- luaG_runerror(L, "memory allocation error: block too big");
- else {
- block = l_realloc(block, oldsize, size);
- if (block == NULL) {
- if (L)
- luaD_throw(L, LUA_ERRMEM);
- else return NULL; /* error before creating state! */
- }
- }
- if (L) {
- lua_assert(G(L) != NULL && G(L)->nblocks > 0);
- G(L)->nblocks -= oldsize;
- G(L)->nblocks += size;
- }
- return block;
-}
-
+++ /dev/null
-/*
-** $Id: lmem.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Interface to Memory Manager
-** See Copyright Notice in lua.h
-*/
-
-#ifndef lmem_h
-#define lmem_h
-
-
-#include <stddef.h>
-
-#include "llimits.h"
-#include "lua.h"
-
-#define MEMERRMSG "not enough memory"
-
-
-void *luaM_realloc (lua_State *L, void *oldblock, lu_mem oldsize, lu_mem size);
-
-void *luaM_growaux (lua_State *L, void *block, int *size, int size_elem,
- int limit, const char *errormsg);
-
-#define luaM_free(L, b, s) luaM_realloc(L, (b), (s), 0)
-#define luaM_freelem(L, b) luaM_realloc(L, (b), sizeof(*(b)), 0)
-#define luaM_freearray(L, b, n, t) luaM_realloc(L, (b), \
- cast(lu_mem, n)*cast(lu_mem, sizeof(t)), 0)
-
-#define luaM_malloc(L, t) luaM_realloc(L, NULL, 0, (t))
-#define luaM_new(L, t) cast(t *, luaM_malloc(L, sizeof(t)))
-#define luaM_newvector(L, n,t) cast(t *, luaM_malloc(L, \
- cast(lu_mem, n)*cast(lu_mem, sizeof(t))))
-
-#define luaM_growvector(L,v,nelems,size,t,limit,e) \
- if (((nelems)+1) > (size)) \
- ((v)=cast(t *, luaM_growaux(L,v,&(size),sizeof(t),limit,e)))
-
-#define luaM_reallocvector(L, v,oldn,n,t) \
- ((v)=cast(t *, luaM_realloc(L, v,cast(lu_mem, oldn)*cast(lu_mem, sizeof(t)), \
- cast(lu_mem, n)*cast(lu_mem, sizeof(t)))))
-
-
-#endif
-
+++ /dev/null
-/*
-** $Id: lobject.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Some generic functions over Lua objects
-** See Copyright Notice in lua.h
-*/
-
-#include <ctype.h>
-#include <stdarg.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define lobject_c
-
-#include "lua.h"
-
-#include "ldo.h"
-#include "lmem.h"
-#include "lobject.h"
-#include "lstate.h"
-#include "lstring.h"
-#include "lvm.h"
-
-
-/* function to convert a string to a lua_Number */
-#ifndef lua_str2number
-#define lua_str2number(s,p) strtod((s), (p))
-#endif
-
-
-const TObject luaO_nilobject = {LUA_TNIL, {NULL}};
-
-
-/*
-** converts an integer to a "floating point byte", represented as
-** (mmmmmxxx), where the real value is (xxx) * 2^(mmmmm)
-*/
-int luaO_int2fb (unsigned int x) {
- int m = 0; /* mantissa */
- while (x >= (1<<3)) {
- x = (x+1) >> 1;
- m++;
- }
- return (m << 3) | cast(int, x);
-}
-
-
-int luaO_log2 (unsigned int x) {
- static const lu_byte log_8[255] = {
- 0,
- 1,1,
- 2,2,2,2,
- 3,3,3,3,3,3,3,3,
- 4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
- 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
- 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
- 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
- 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
- 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
- 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
- 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
- };
- if (x >= 0x00010000) {
- if (x >= 0x01000000) return log_8[((x>>24) & 0xff) - 1]+24;
- else return log_8[((x>>16) & 0xff) - 1]+16;
- }
- else {
- if (x >= 0x00000100) return log_8[((x>>8) & 0xff) - 1]+8;
- else if (x) return log_8[(x & 0xff) - 1];
- return -1; /* special `log' for 0 */
- }
-}
-
-
-int luaO_rawequalObj (const TObject *t1, const TObject *t2) {
- if (ttype(t1) != ttype(t2)) return 0;
- else switch (ttype(t1)) {
- case LUA_TNIL:
- return 1;
- case LUA_TNUMBER:
- return nvalue(t1) == nvalue(t2);
- case LUA_TBOOLEAN:
- return bvalue(t1) == bvalue(t2); /* boolean true must be 1 !! */
- case LUA_TLIGHTUSERDATA:
- return pvalue(t1) == pvalue(t2);
- default:
- lua_assert(iscollectable(t1));
- return gcvalue(t1) == gcvalue(t2);
- }
-}
-
-
-int luaO_str2d (const char *s, lua_Number *result) {
- char *endptr;
- lua_Number res = lua_str2number(s, &endptr);
- if (endptr == s) return 0; /* no conversion */
- while (isspace((unsigned char)(*endptr))) endptr++;
- if (*endptr != '\0') return 0; /* invalid trailing characters? */
- *result = res;
- return 1;
-}
-
-
-
-static void pushstr (lua_State *L, const char *str)
-{
- setsvalue2s(L->top, luaS_new(L, str));
- incr_top(L);
-}
-
-
-/* this function handles only `%d', `%c', %f, and `%s' formats */
-const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
- int n = 1;
- pushstr(L, "");
- for (;;) {
- const char *e = strchr(fmt, '%');
- if (e == NULL) break;
- setsvalue2s(L->top, luaS_newlstr(L, fmt, e-fmt));
- incr_top(L);
- switch (*(e+1)) {
- case 's':
- pushstr(L, va_arg(argp, char *));
- break;
- case 'c': {
- char buff[2];
- buff[0] = cast(char, va_arg(argp, int));
- buff[1] = '\0';
- pushstr(L, buff);
- break;
- }
- case 'd':
- setnvalue(L->top, cast(lua_Number, va_arg(argp, int)));
- incr_top(L);
- break;
- case 'f':
- setnvalue(L->top, cast(lua_Number, va_arg(argp, l_uacNumber)));
- incr_top(L);
- break;
- case '%':
- pushstr(L, "%");
- break;
- default: lua_assert(0);
- }
- n += 2;
- fmt = e+2;
- }
- pushstr(L, fmt);
- luaV_concat(L, n+1, L->top - L->base - 1);
- L->top -= n;
- return svalue(L->top - 1);
-}
-
-
-const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) {
- const char *msg;
- va_list argp;
- va_start(argp, fmt);
- msg = luaO_pushvfstring(L, fmt, argp);
- va_end(argp);
- return msg;
-}
-
-
-void luaO_chunkid (char *out, const char *source, int bufflen) {
- if (*source == '=') {
- strncpy(out, source+1, bufflen); /* remove first char */
- out[bufflen-1] = '\0'; /* ensures null termination */
- }
- else { /* out = "source", or "...source" */
- if (*source == '@') {
- int l;
- source++; /* skip the `@' */
- bufflen -= sizeof(" `...' ");
- l = strlen(source);
- strcpy(out, "");
- if (l>bufflen) {
- source += (l-bufflen); /* get last part of file name */
- strcat(out, "...");
- }
- strcat(out, source);
- }
- else { /* out = [string "string"] */
- int len = strcspn(source, "\n"); /* stop at first newline */
- bufflen -= sizeof(" [string \"...\"] ");
- if (len > bufflen) len = bufflen;
- strcpy(out, "[string \"");
- if (source[len] != '\0') { /* must truncate? */
- strncat(out, source, len);
- strcat(out, "...");
- }
- else
- strcat(out, source);
- strcat(out, "\"]");
- }
- }
-}
+++ /dev/null
-/*
-** $Id: lobject.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Type definitions for Lua objects
-** See Copyright Notice in lua.h
-*/
-
-#ifndef lobject_h
-#define lobject_h
-
-
-#include "llimits.h"
-#include "lua.h"
-
-
-/* tags for values visible from Lua */
-#define NUM_TAGS LUA_TTHREAD
-
-
-/*
-** Extra tags for non-values
-*/
-#define LUA_TPROTO (NUM_TAGS+1)
-#define LUA_TUPVAL (NUM_TAGS+2)
-
-
-/*
-** Union of all collectable objects
-*/
-typedef union GCObject GCObject;
-
-
-/*
-** Common Header for all collectable objects (in macro form, to be
-** included in other objects)
-*/
-#define CommonHeader GCObject *next; lu_byte tt; lu_byte marked
-
-
-/*
-** Common header in struct form
-*/
-typedef struct GCheader {
- CommonHeader;
-} GCheader;
-
-
-
-
-/*
-** Union of all Lua values
-*/
-typedef union {
- GCObject *gc;
- void *p;
- lua_Number n;
- int b;
-} Value;
-
-
-/*
-** Lua values (or `tagged objects')
-*/
-typedef struct lua_TObject {
- int tt;
- Value value;
-} TObject;
-
-
-/* Macros to test type */
-#define ttisnil(o) (ttype(o) == LUA_TNIL)
-#define ttisnumber(o) (ttype(o) == LUA_TNUMBER)
-#define ttisstring(o) (ttype(o) == LUA_TSTRING)
-#define ttistable(o) (ttype(o) == LUA_TTABLE)
-#define ttisfunction(o) (ttype(o) == LUA_TFUNCTION)
-#define ttisboolean(o) (ttype(o) == LUA_TBOOLEAN)
-#define ttisuserdata(o) (ttype(o) == LUA_TUSERDATA)
-#define ttisthread(o) (ttype(o) == LUA_TTHREAD)
-#define ttislightuserdata(o) (ttype(o) == LUA_TLIGHTUSERDATA)
-
-/* Macros to access values */
-#define ttype(o) ((o)->tt)
-#define gcvalue(o) check_exp(iscollectable(o), (o)->value.gc)
-#define pvalue(o) check_exp(ttislightuserdata(o), (o)->value.p)
-#define nvalue(o) check_exp(ttisnumber(o), (o)->value.n)
-#define tsvalue(o) check_exp(ttisstring(o), &(o)->value.gc->ts)
-#define uvalue(o) check_exp(ttisuserdata(o), &(o)->value.gc->u)
-#define clvalue(o) check_exp(ttisfunction(o), &(o)->value.gc->cl)
-#define hvalue(o) check_exp(ttistable(o), &(o)->value.gc->h)
-#define bvalue(o) check_exp(ttisboolean(o), (o)->value.b)
-#define thvalue(o) check_exp(ttisthread(o), &(o)->value.gc->th)
-
-#define l_isfalse(o) (ttisnil(o) || (ttisboolean(o) && bvalue(o) == 0))
-
-/* Macros to set values */
-#define setnvalue(obj,x) \
- { TObject *i_o=(obj); i_o->tt=LUA_TNUMBER; i_o->value.n=(x); }
-
-#define chgnvalue(obj,x) \
- check_exp(ttype(obj)==LUA_TNUMBER, (obj)->value.n=(x))
-
-#define setpvalue(obj,x) \
- { TObject *i_o=(obj); i_o->tt=LUA_TLIGHTUSERDATA; i_o->value.p=(x); }
-
-#define setbvalue(obj,x) \
- { TObject *i_o=(obj); i_o->tt=LUA_TBOOLEAN; i_o->value.b=(x); }
-
-#define setsvalue(obj,x) \
- { TObject *i_o=(obj); i_o->tt=LUA_TSTRING; \
- i_o->value.gc=cast(GCObject *, (x)); \
- lua_assert(i_o->value.gc->gch.tt == LUA_TSTRING); }
-
-#define setuvalue(obj,x) \
- { TObject *i_o=(obj); i_o->tt=LUA_TUSERDATA; \
- i_o->value.gc=cast(GCObject *, (x)); \
- lua_assert(i_o->value.gc->gch.tt == LUA_TUSERDATA); }
-
-#define setthvalue(obj,x) \
- { TObject *i_o=(obj); i_o->tt=LUA_TTHREAD; \
- i_o->value.gc=cast(GCObject *, (x)); \
- lua_assert(i_o->value.gc->gch.tt == LUA_TTHREAD); }
-
-#define setclvalue(obj,x) \
- { TObject *i_o=(obj); i_o->tt=LUA_TFUNCTION; \
- i_o->value.gc=cast(GCObject *, (x)); \
- lua_assert(i_o->value.gc->gch.tt == LUA_TFUNCTION); }
-
-#define sethvalue(obj,x) \
- { TObject *i_o=(obj); i_o->tt=LUA_TTABLE; \
- i_o->value.gc=cast(GCObject *, (x)); \
- lua_assert(i_o->value.gc->gch.tt == LUA_TTABLE); }
-
-#define setnilvalue(obj) ((obj)->tt=LUA_TNIL)
-
-
-
-/*
-** for internal debug only
-*/
-#define checkconsistency(obj) \
- lua_assert(!iscollectable(obj) || (ttype(obj) == (obj)->value.gc->gch.tt))
-
-
-#define setobj(obj1,obj2) \
- { const TObject *o2=(obj2); TObject *o1=(obj1); \
- checkconsistency(o2); \
- o1->tt=o2->tt; o1->value = o2->value; }
-
-
-/*
-** different types of sets, according to destination
-*/
-
-/* from stack to (same) stack */
-#define setobjs2s setobj
-/* to stack (not from same stack) */
-#define setobj2s setobj
-#define setsvalue2s setsvalue
-/* from table to same table */
-#define setobjt2t setobj
-/* to table */
-#define setobj2t setobj
-/* to new object */
-#define setobj2n setobj
-#define setsvalue2n setsvalue
-
-#define setttype(obj, tt) (ttype(obj) = (tt))
-
-
-#define iscollectable(o) (ttype(o) >= LUA_TSTRING)
-
-
-
-typedef TObject *StkId; /* index to stack elements */
-
-
-/*
-** String headers for string table
-*/
-typedef union TString {
- L_Umaxalign dummy; /* ensures maximum alignment for strings */
- struct {
- CommonHeader;
- lu_byte reserved;
- lu_hash hash;
- size_t len;
- } tsv;
-} TString;
-
-
-#define getstr(ts) cast(const char *, (ts) + 1)
-#define svalue(o) getstr(tsvalue(o))
-
-
-
-typedef union Udata {
- L_Umaxalign dummy; /* ensures maximum alignment for `local' udata */
- struct {
- CommonHeader;
- struct Table *metatable;
- size_t len;
- } uv;
-} Udata;
-
-
-
-
-/*
-** Function Prototypes
-*/
-typedef struct Proto {
- CommonHeader;
- TObject *k; /* constants used by the function */
- Instruction *code;
- struct Proto **p; /* functions defined inside the function */
- int *lineinfo; /* map from opcodes to source lines */
- struct LocVar *locvars; /* information about local variables */
- TString **upvalues; /* upvalue names */
- TString *source;
- int sizeupvalues;
- int sizek; /* size of `k' */
- int sizecode;
- int sizelineinfo;
- int sizep; /* size of `p' */
- int sizelocvars;
- int lineDefined;
- GCObject *gclist;
- lu_byte nups; /* number of upvalues */
- lu_byte numparams;
- lu_byte is_vararg;
- lu_byte maxstacksize;
-} Proto;
-
-
-typedef struct LocVar {
- TString *varname;
- int startpc; /* first point where variable is active */
- int endpc; /* first point where variable is dead */
-} LocVar;
-
-
-
-/*
-** Upvalues
-*/
-
-typedef struct UpVal {
- CommonHeader;
- TObject *v; /* points to stack or to its own value */
- TObject value; /* the value (when closed) */
-} UpVal;
-
-
-/*
-** Closures
-*/
-
-#define ClosureHeader \
- CommonHeader; lu_byte isC; lu_byte nupvalues; GCObject *gclist
-
-typedef struct CClosure {
- ClosureHeader;
- lua_CFunction f;
- TObject upvalue[1];
-} CClosure;
-
-
-typedef struct LClosure {
- ClosureHeader;
- struct Proto *p;
- TObject g; /* global table for this closure */
- UpVal *upvals[1];
-} LClosure;
-
-
-typedef union Closure {
- CClosure c;
- LClosure l;
-} Closure;
-
-
-#define iscfunction(o) (ttype(o) == LUA_TFUNCTION && clvalue(o)->c.isC)
-#define isLfunction(o) (ttype(o) == LUA_TFUNCTION && !clvalue(o)->c.isC)
-
-
-/*
-** Tables
-*/
-
-typedef struct Node {
- TObject i_key;
- TObject i_val;
- struct Node *next; /* for chaining */
-} Node;
-
-
-typedef struct Table {
- CommonHeader;
- lu_byte flags; /* 1<<p means tagmethod(p) is not present */
- lu_byte lsizenode; /* log2 of size of `node' array */
- struct Table *metatable;
- TObject *array; /* array part */
- Node *node;
- Node *firstfree; /* this position is free; all positions after it are full */
- GCObject *gclist;
- int sizearray; /* size of `array' array */
-} Table;
-
-
-
-/*
-** `module' operation for hashing (size is always a power of 2)
-*/
-#define lmod(s,size) \
- check_exp((size&(size-1))==0, (cast(int, (s) & ((size)-1))))
-
-
-#define twoto(x) (1<<(x))
-#define sizenode(t) (twoto((t)->lsizenode))
-
-
-
-extern const TObject luaO_nilobject;
-
-int luaO_log2 (unsigned int x);
-int luaO_int2fb (unsigned int x);
-#define fb2int(x) (((x) & 7) << ((x) >> 3))
-
-int luaO_rawequalObj (const TObject *t1, const TObject *t2);
-int luaO_str2d (const char *s, lua_Number *result);
-
-const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp);
-const char *luaO_pushfstring (lua_State *L, const char *fmt, ...);
-void luaO_chunkid (char *out, const char *source, int len);
-
-
-#endif
+++ /dev/null
-/*
-** $Id: lopcodes.c,v 1.1 2004/03/16 21:58:30 niemeyer Exp $
-** extracted automatically from lopcodes.h by mkprint.lua
-** DO NOT EDIT
-** See Copyright Notice in lua.h
-*/
-
-
-#define lopcodes_c
-
-#include "lua.h"
-
-#include "lobject.h"
-#include "lopcodes.h"
-
-
-#ifdef LUA_OPNAMES
-
-const char *const luaP_opnames[] = {
- "MOVE",
- "LOADK",
- "LOADBOOL",
- "LOADNIL",
- "GETUPVAL",
- "GETGLOBAL",
- "GETTABLE",
- "SETGLOBAL",
- "SETUPVAL",
- "SETTABLE",
- "NEWTABLE",
- "SELF",
- "ADD",
- "SUB",
- "MUL",
- "DIV",
- "POW",
- "UNM",
- "NOT",
- "CONCAT",
- "JMP",
- "EQ",
- "LT",
- "LE",
- "TEST",
- "CALL",
- "TAILCALL",
- "RETURN",
- "FORLOOP",
- "TFORLOOP",
- "TFORPREP",
- "SETLIST",
- "SETLISTO",
- "CLOSE",
- "CLOSURE"
-};
-
-#endif
-
-#define opmode(t,b,bk,ck,sa,k,m) (((t)<<OpModeT) | \
- ((b)<<OpModeBreg) | ((bk)<<OpModeBrk) | ((ck)<<OpModeCrk) | \
- ((sa)<<OpModesetA) | ((k)<<OpModeK) | (m))
-
-
-const lu_byte luaP_opmodes[NUM_OPCODES] = {
-/* T B Bk Ck sA K mode opcode */
- opmode(0, 1, 0, 0, 1, 0, iABC) /* OP_MOVE */
- ,opmode(0, 0, 0, 0, 1, 1, iABx) /* OP_LOADK */
- ,opmode(0, 0, 0, 0, 1, 0, iABC) /* OP_LOADBOOL */
- ,opmode(0, 1, 0, 0, 1, 0, iABC) /* OP_LOADNIL */
- ,opmode(0, 0, 0, 0, 1, 0, iABC) /* OP_GETUPVAL */
- ,opmode(0, 0, 0, 0, 1, 1, iABx) /* OP_GETGLOBAL */
- ,opmode(0, 1, 0, 1, 1, 0, iABC) /* OP_GETTABLE */
- ,opmode(0, 0, 0, 0, 0, 1, iABx) /* OP_SETGLOBAL */
- ,opmode(0, 0, 0, 0, 0, 0, iABC) /* OP_SETUPVAL */
- ,opmode(0, 0, 1, 1, 0, 0, iABC) /* OP_SETTABLE */
- ,opmode(0, 0, 0, 0, 1, 0, iABC) /* OP_NEWTABLE */
- ,opmode(0, 1, 0, 1, 1, 0, iABC) /* OP_SELF */
- ,opmode(0, 0, 1, 1, 1, 0, iABC) /* OP_ADD */
- ,opmode(0, 0, 1, 1, 1, 0, iABC) /* OP_SUB */
- ,opmode(0, 0, 1, 1, 1, 0, iABC) /* OP_MUL */
- ,opmode(0, 0, 1, 1, 1, 0, iABC) /* OP_DIV */
- ,opmode(0, 0, 1, 1, 1, 0, iABC) /* OP_POW */
- ,opmode(0, 1, 0, 0, 1, 0, iABC) /* OP_UNM */
- ,opmode(0, 1, 0, 0, 1, 0, iABC) /* OP_NOT */
- ,opmode(0, 1, 0, 1, 1, 0, iABC) /* OP_CONCAT */
- ,opmode(0, 0, 0, 0, 0, 0, iAsBx) /* OP_JMP */
- ,opmode(1, 0, 1, 1, 0, 0, iABC) /* OP_EQ */
- ,opmode(1, 0, 1, 1, 0, 0, iABC) /* OP_LT */
- ,opmode(1, 0, 1, 1, 0, 0, iABC) /* OP_LE */
- ,opmode(1, 1, 0, 0, 1, 0, iABC) /* OP_TEST */
- ,opmode(0, 0, 0, 0, 0, 0, iABC) /* OP_CALL */
- ,opmode(0, 0, 0, 0, 0, 0, iABC) /* OP_TAILCALL */
- ,opmode(0, 0, 0, 0, 0, 0, iABC) /* OP_RETURN */
- ,opmode(0, 0, 0, 0, 0, 0, iAsBx) /* OP_FORLOOP */
- ,opmode(1, 0, 0, 0, 0, 0, iABC) /* OP_TFORLOOP */
- ,opmode(0, 0, 0, 0, 0, 0, iAsBx) /* OP_TFORPREP */
- ,opmode(0, 0, 0, 0, 0, 0, iABx) /* OP_SETLIST */
- ,opmode(0, 0, 0, 0, 0, 0, iABx) /* OP_SETLISTO */
- ,opmode(0, 0, 0, 0, 0, 0, iABC) /* OP_CLOSE */
- ,opmode(0, 0, 0, 0, 1, 0, iABx) /* OP_CLOSURE */
-};
-
+++ /dev/null
-/*
-** $Id: lopcodes.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Opcodes for Lua virtual machine
-** See Copyright Notice in lua.h
-*/
-
-#ifndef lopcodes_h
-#define lopcodes_h
-
-#include "llimits.h"
-
-
-/*===========================================================================
- We assume that instructions are unsigned numbers.
- All instructions have an opcode in the first 6 bits.
- Instructions can have the following fields:
- `A' : 8 bits
- `B' : 9 bits
- `C' : 9 bits
- `Bx' : 18 bits (`B' and `C' together)
- `sBx' : signed Bx
-
- A signed argument is represented in excess K; that is, the number
- value is the unsigned value minus K. K is exactly the maximum value
- for that argument (so that -max is represented by 0, and +max is
- represented by 2*max), which is half the maximum for the corresponding
- unsigned argument.
-===========================================================================*/
-
-
-enum OpMode {iABC, iABx, iAsBx}; /* basic instruction format */
-
-
-/*
-** size and position of opcode arguments.
-*/
-#define SIZE_C 9
-#define SIZE_B 9
-#define SIZE_Bx (SIZE_C + SIZE_B)
-#define SIZE_A 8
-
-#define SIZE_OP 6
-
-#define POS_C SIZE_OP
-#define POS_B (POS_C + SIZE_C)
-#define POS_Bx POS_C
-#define POS_A (POS_B + SIZE_B)
-
-
-/*
-** limits for opcode arguments.
-** we use (signed) int to manipulate most arguments,
-** so they must fit in BITS_INT-1 bits (-1 for sign)
-*/
-#if SIZE_Bx < BITS_INT-1
-#define MAXARG_Bx ((1<<SIZE_Bx)-1)
-#define MAXARG_sBx (MAXARG_Bx>>1) /* `sBx' is signed */
-#else
-#define MAXARG_Bx MAX_INT
-#define MAXARG_sBx MAX_INT
-#endif
-
-
-#define MAXARG_A ((1<<SIZE_A)-1)
-#define MAXARG_B ((1<<SIZE_B)-1)
-#define MAXARG_C ((1<<SIZE_C)-1)
-
-
-/* creates a mask with `n' 1 bits at position `p' */
-#define MASK1(n,p) ((~((~(Instruction)0)<<n))<<p)
-
-/* creates a mask with `n' 0 bits at position `p' */
-#define MASK0(n,p) (~MASK1(n,p))
-
-/*
-** the following macros help to manipulate instructions
-*/
-
-#define GET_OPCODE(i) (cast(OpCode, (i)&MASK1(SIZE_OP,0)))
-#define SET_OPCODE(i,o) ((i) = (((i)&MASK0(SIZE_OP,0)) | cast(Instruction, o)))
-
-#define GETARG_A(i) (cast(int, (i)>>POS_A))
-#define SETARG_A(i,u) ((i) = (((i)&MASK0(SIZE_A,POS_A)) | \
- ((cast(Instruction, u)<<POS_A)&MASK1(SIZE_A,POS_A))))
-
-#define GETARG_B(i) (cast(int, ((i)>>POS_B) & MASK1(SIZE_B,0)))
-#define SETARG_B(i,b) ((i) = (((i)&MASK0(SIZE_B,POS_B)) | \
- ((cast(Instruction, b)<<POS_B)&MASK1(SIZE_B,POS_B))))
-
-#define GETARG_C(i) (cast(int, ((i)>>POS_C) & MASK1(SIZE_C,0)))
-#define SETARG_C(i,b) ((i) = (((i)&MASK0(SIZE_C,POS_C)) | \
- ((cast(Instruction, b)<<POS_C)&MASK1(SIZE_C,POS_C))))
-
-#define GETARG_Bx(i) (cast(int, ((i)>>POS_Bx) & MASK1(SIZE_Bx,0)))
-#define SETARG_Bx(i,b) ((i) = (((i)&MASK0(SIZE_Bx,POS_Bx)) | \
- ((cast(Instruction, b)<<POS_Bx)&MASK1(SIZE_Bx,POS_Bx))))
-
-#define GETARG_sBx(i) (GETARG_Bx(i)-MAXARG_sBx)
-#define SETARG_sBx(i,b) SETARG_Bx((i),cast(unsigned int, (b)+MAXARG_sBx))
-
-
-#define CREATE_ABC(o,a,b,c) (cast(Instruction, o) \
- | (cast(Instruction, a)<<POS_A) \
- | (cast(Instruction, b)<<POS_B) \
- | (cast(Instruction, c)<<POS_C))
-
-#define CREATE_ABx(o,a,bc) (cast(Instruction, o) \
- | (cast(Instruction, a)<<POS_A) \
- | (cast(Instruction, bc)<<POS_Bx))
-
-
-
-
-/*
-** invalid register that fits in 8 bits
-*/
-#define NO_REG MAXARG_A
-
-
-/*
-** R(x) - register
-** Kst(x) - constant (in constant table)
-** RK(x) == if x < MAXSTACK then R(x) else Kst(x-MAXSTACK)
-*/
-
-
-/*
-** grep "ORDER OP" if you change these enums
-*/
-
-typedef enum {
-/*----------------------------------------------------------------------
-name args description
-------------------------------------------------------------------------*/
-OP_MOVE,/* A B R(A) := R(B) */
-OP_LOADK,/* A Bx R(A) := Kst(Bx) */
-OP_LOADBOOL,/* A B C R(A) := (Bool)B; if (C) PC++ */
-OP_LOADNIL,/* A B R(A) := ... := R(B) := nil */
-OP_GETUPVAL,/* A B R(A) := UpValue[B] */
-
-OP_GETGLOBAL,/* A Bx R(A) := Gbl[Kst(Bx)] */
-OP_GETTABLE,/* A B C R(A) := R(B)[RK(C)] */
-
-OP_SETGLOBAL,/* A Bx Gbl[Kst(Bx)] := R(A) */
-OP_SETUPVAL,/* A B UpValue[B] := R(A) */
-OP_SETTABLE,/* A B C R(A)[RK(B)] := RK(C) */
-
-OP_NEWTABLE,/* A B C R(A) := {} (size = B,C) */
-
-OP_SELF,/* A B C R(A+1) := R(B); R(A) := R(B)[RK(C)] */
-
-OP_ADD,/* A B C R(A) := RK(B) + RK(C) */
-OP_SUB,/* A B C R(A) := RK(B) - RK(C) */
-OP_MUL,/* A B C R(A) := RK(B) * RK(C) */
-OP_DIV,/* A B C R(A) := RK(B) / RK(C) */
-OP_POW,/* A B C R(A) := RK(B) ^ RK(C) */
-OP_UNM,/* A B R(A) := -R(B) */
-OP_NOT,/* A B R(A) := not R(B) */
-
-OP_CONCAT,/* A B C R(A) := R(B).. ... ..R(C) */
-
-OP_JMP,/* sBx PC += sBx */
-
-OP_EQ,/* A B C if ((RK(B) == RK(C)) ~= A) then pc++ */
-OP_LT,/* A B C if ((RK(B) < RK(C)) ~= A) then pc++ */
-OP_LE,/* A B C if ((RK(B) <= RK(C)) ~= A) then pc++ */
-
-OP_TEST,/* A B C if (R(B) <=> C) then R(A) := R(B) else pc++ */
-
-OP_CALL,/* A B C R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */
-OP_TAILCALL,/* A B C return R(A)(R(A+1), ... ,R(A+B-1)) */
-OP_RETURN,/* A B return R(A), ... ,R(A+B-2) (see note) */
-
-OP_FORLOOP,/* A sBx R(A)+=R(A+2); if R(A) <?= R(A+1) then PC+= sBx */
-
-OP_TFORLOOP,/* A C R(A+2), ... ,R(A+2+C) := R(A)(R(A+1), R(A+2));
- if R(A+2) ~= nil then pc++ */
-OP_TFORPREP,/* A sBx if type(R(A)) == table then R(A+1):=R(A), R(A):=next;
- PC += sBx */
-
-OP_SETLIST,/* A Bx R(A)[Bx-Bx%FPF+i] := R(A+i), 1 <= i <= Bx%FPF+1 */
-OP_SETLISTO,/* A Bx */
-
-OP_CLOSE,/* A close all variables in the stack up to (>=) R(A)*/
-OP_CLOSURE/* A Bx R(A) := closure(KPROTO[Bx], R(A), ... ,R(A+n)) */
-} OpCode;
-
-
-#define NUM_OPCODES (cast(int, OP_CLOSURE+1))
-
-
-
-/*===========================================================================
- Notes:
- (1) In OP_CALL, if (B == 0) then B = top. C is the number of returns - 1,
- and can be 0: OP_CALL then sets `top' to last_result+1, so
- next open instruction (OP_CALL, OP_RETURN, OP_SETLIST) may use `top'.
-
- (2) In OP_RETURN, if (B == 0) then return up to `top'
-
- (3) For comparisons, B specifies what conditions the test should accept.
-
- (4) All `skips' (pc++) assume that next instruction is a jump
-===========================================================================*/
-
-
-/*
-** masks for instruction properties
-*/
-enum OpModeMask {
- OpModeBreg = 2, /* B is a register */
- OpModeBrk, /* B is a register/constant */
- OpModeCrk, /* C is a register/constant */
- OpModesetA, /* instruction set register A */
- OpModeK, /* Bx is a constant */
- OpModeT /* operator is a test */
-
-};
-
-
-extern const lu_byte luaP_opmodes[NUM_OPCODES];
-
-#define getOpMode(m) (cast(enum OpMode, luaP_opmodes[m] & 3))
-#define testOpMode(m, b) (luaP_opmodes[m] & (1 << (b)))
-
-
-#ifdef LUA_OPNAMES
-extern const char *const luaP_opnames[]; /* opcode names */
-#endif
-
-
-
-/* number of list items to accumulate before a SETLIST instruction */
-/* (must be a power of 2) */
-#define LFIELDS_PER_FLUSH 32
-
-
-#endif
+++ /dev/null
-/*
-** $Id: lparser.c,v 1.3 2004/03/23 05:09:14 jbj Exp $
-** Lua Parser
-** See Copyright Notice in lua.h
-*/
-
-
-#include <string.h>
-
-#define lparser_c
-
-#include "lua.h"
-
-#include "lcode.h"
-#include "ldebug.h"
-#include "lfunc.h"
-#include "llex.h"
-#include "lmem.h"
-#include "lobject.h"
-#include "lopcodes.h"
-#include "lparser.h"
-#include "lstate.h"
-#include "lstring.h"
-
-
-
-
-#define getlocvar(fs, i) ((fs)->f->locvars[(fs)->actvar[i]])
-
-
-#define enterlevel(ls) if (++(ls)->nestlevel > LUA_MAXPARSERLEVEL) \
- luaX_syntaxerror(ls, "too many syntax levels");
-#define leavelevel(ls) ((ls)->nestlevel--)
-
-
-/*
-** nodes for block list (list of active blocks)
-*/
-typedef struct BlockCnt {
- struct BlockCnt *previous; /* chain */
- int breaklist; /* list of jumps out of this loop */
- int nactvar; /* # active local variables outside the breakable structure */
- int upval; /* true if some variable in the block is an upvalue */
- int isbreakable; /* true if `block' is a loop */
-} BlockCnt;
-
-
-
-/*
-** prototypes for recursive non-terminal functions
-*/
-static void chunk (LexState *ls);
-static void expr (LexState *ls, expdesc *v);
-
-
-
-static void next (LexState *ls)
-{
- ls->lastline = ls->linenumber;
- if (ls->lookahead.token != TK_EOS) { /* is there a look-ahead token? */
- ls->t = ls->lookahead; /* use this one */
- ls->lookahead.token = TK_EOS; /* and discharge it */
- }
- else
- ls->t.token = luaX_lex(ls, &ls->t.seminfo); /* read next token */
-}
-
-
-static void lookahead (LexState *ls)
-{
- lua_assert(ls->lookahead.token == TK_EOS);
- ls->lookahead.token = luaX_lex(ls, &ls->lookahead.seminfo);
-}
-
-
-static void error_expected (LexState *ls, int token)
-{
- luaX_syntaxerror(ls,
- luaO_pushfstring(ls->L, "`%s' expected", luaX_token2str(ls, token)));
-}
-
-
-static int testnext (LexState *ls, int c)
-{
- if (ls->t.token == c) {
- next(ls);
- return 1;
- }
- else return 0;
-}
-
-
-static void check (LexState *ls, int c)
-{
- if (!testnext(ls, c))
- error_expected(ls, c);
-}
-
-
-#define check_condition(ls,c,msg) { if (!(c)) luaX_syntaxerror(ls, msg); }
-
-
-
-static void check_match (LexState *ls, int what, int who, int where)
-{
- if (!testnext(ls, what)) {
- if (where == ls->linenumber)
- error_expected(ls, what);
- else {
- luaX_syntaxerror(ls, luaO_pushfstring(ls->L,
- "`%s' expected (to close `%s' at line %d)",
- luaX_token2str(ls, what), luaX_token2str(ls, who), where));
- }
- }
-}
-
-
-static TString *str_checkname (LexState *ls)
-{
- TString *ts;
- check_condition(ls, (ls->t.token == TK_NAME), "<name> expected");
- ts = ls->t.seminfo.ts;
- next(ls);
- return ts;
-}
-
-
-static void init_exp (expdesc *e, expkind k, int i)
-{
- e->f = e->t = NO_JUMP;
- e->k = k;
- e->info = i;
-}
-
-
-static void codestring (LexState *ls, expdesc *e, TString *s)
-{
- init_exp(e, VK, luaK_stringK(ls->fs, s));
-}
-
-
-static void checkname(LexState *ls, expdesc *e)
-{
- codestring(ls, e, str_checkname(ls));
-}
-
-
-static int luaI_registerlocalvar (LexState *ls, TString *varname)
-{
- FuncState *fs = ls->fs;
- Proto *f = fs->f;
- luaM_growvector(ls->L, f->locvars, fs->nlocvars, f->sizelocvars,
- LocVar, MAX_INT, "");
- f->locvars[fs->nlocvars].varname = varname;
- return fs->nlocvars++;
-}
-
-
-static void new_localvar (LexState *ls, TString *name, int n)
-{
- FuncState *fs = ls->fs;
- luaX_checklimit(ls, fs->nactvar+n+1, MAXVARS, "local variables");
- fs->actvar[fs->nactvar+n] = luaI_registerlocalvar(ls, name);
-}
-
-
-static void adjustlocalvars (LexState *ls, int nvars)
-{
- FuncState *fs = ls->fs;
- fs->nactvar += nvars;
- for (; nvars; nvars--) {
- getlocvar(fs, fs->nactvar - nvars).startpc = fs->pc;
- }
-}
-
-
-static void removevars (LexState *ls, int tolevel)
-{
- FuncState *fs = ls->fs;
- while (fs->nactvar > tolevel)
- getlocvar(fs, --fs->nactvar).endpc = fs->pc;
-}
-
-
-static void new_localvarstr (LexState *ls, const char *name, int n)
-{
- new_localvar(ls, luaS_new(ls->L, name), n);
-}
-
-
-static void create_local (LexState *ls, const char *name)
-{
- new_localvarstr(ls, name, 0);
- adjustlocalvars(ls, 1);
-}
-
-
-static int indexupvalue (FuncState *fs, TString *name, expdesc *v)
-{
- int i;
- Proto *f = fs->f;
- for (i=0; i<f->nups; i++) {
- if (fs->upvalues[i].k == v->k && fs->upvalues[i].info == v->info) {
- lua_assert(fs->f->upvalues[i] == name);
- return i;
- }
- }
- /* new one */
- luaX_checklimit(fs->ls, f->nups + 1, MAXUPVALUES, "upvalues");
- luaM_growvector(fs->L, fs->f->upvalues, f->nups, fs->f->sizeupvalues,
- TString *, MAX_INT, "");
- fs->f->upvalues[f->nups] = name;
- fs->upvalues[f->nups] = *v;
- return f->nups++;
-}
-
-
-static int searchvar (FuncState *fs, TString *n)
-{
- int i;
- for (i=fs->nactvar-1; i >= 0; i--) {
- if (n == getlocvar(fs, i).varname)
- return i;
- }
- return -1; /* not found */
-}
-
-
-static void markupval (FuncState *fs, int level)
-{
- BlockCnt *bl = fs->bl;
- while (bl && bl->nactvar > level) bl = bl->previous;
- if (bl) bl->upval = 1;
-}
-
-
-static void singlevaraux (FuncState *fs, TString *n, expdesc *var, int base)
-{
- if (fs == NULL) /* no more levels? */
- init_exp(var, VGLOBAL, NO_REG); /* default is global variable */
- else {
- int v = searchvar(fs, n); /* look up at current level */
- if (v >= 0) {
- init_exp(var, VLOCAL, v);
- if (!base)
- markupval(fs, v); /* local will be used as an upval */
- }
- else { /* not found at current level; try upper one */
- singlevaraux(fs->prev, n, var, 0);
- if (var->k == VGLOBAL) {
- if (base)
- var->info = luaK_stringK(fs, n); /* info points to global name */
- }
- else { /* LOCAL or UPVAL */
- var->info = indexupvalue(fs, n, var);
- var->k = VUPVAL; /* upvalue in this level */
- }
- }
- }
-}
-
-
-static TString *singlevar (LexState *ls, expdesc *var, int base)
-{
- TString *varname = str_checkname(ls);
- singlevaraux(ls->fs, varname, var, base);
- return varname;
-}
-
-
-static void adjust_assign (LexState *ls, int nvars, int nexps, expdesc *e)
-{
- FuncState *fs = ls->fs;
- int extra = nvars - nexps;
- if (e->k == VCALL) {
- extra++; /* includes call itself */
- if (extra <= 0) extra = 0;
- else luaK_reserveregs(fs, extra-1);
- luaK_setcallreturns(fs, e, extra); /* call provides the difference */
- }
- else {
- if (e->k != VVOID) luaK_exp2nextreg(fs, e); /* close last expression */
- if (extra > 0) {
- int reg = fs->freereg;
- luaK_reserveregs(fs, extra);
- luaK_nil(fs, reg, extra);
- }
- }
-}
-
-
-static void code_params (LexState *ls, int nparams, int dots)
-{
- FuncState *fs = ls->fs;
- adjustlocalvars(ls, nparams);
- luaX_checklimit(ls, fs->nactvar, MAXPARAMS, "parameters");
- fs->f->numparams = cast(lu_byte, fs->nactvar);
- fs->f->is_vararg = cast(lu_byte, dots);
- if (dots)
- create_local(ls, "arg");
- luaK_reserveregs(fs, fs->nactvar); /* reserve register for parameters */
-}
-
-
-static void enterblock (FuncState *fs, BlockCnt *bl, int isbreakable)
-{
- bl->breaklist = NO_JUMP;
- bl->isbreakable = isbreakable;
- bl->nactvar = fs->nactvar;
- bl->upval = 0;
- bl->previous = fs->bl;
- fs->bl = bl;
- lua_assert(fs->freereg == fs->nactvar);
-}
-
-
-static void leaveblock (FuncState *fs)
-{
- BlockCnt *bl = fs->bl;
- fs->bl = bl->previous;
- removevars(fs->ls, bl->nactvar);
- if (bl->upval)
- luaK_codeABC(fs, OP_CLOSE, bl->nactvar, 0, 0);
- lua_assert(bl->nactvar == fs->nactvar);
- fs->freereg = fs->nactvar; /* free registers */
- luaK_patchtohere(fs, bl->breaklist);
-}
-
-
-static void pushclosure (LexState *ls, FuncState *func, expdesc *v)
-{
- FuncState *fs = ls->fs;
- Proto *f = fs->f;
- int i;
- luaM_growvector(ls->L, f->p, fs->np, f->sizep, Proto *,
- MAXARG_Bx, "constant table overflow");
- f->p[fs->np++] = func->f;
- init_exp(v, VRELOCABLE, luaK_codeABx(fs, OP_CLOSURE, 0, fs->np-1));
- for (i=0; i<func->f->nups; i++) {
- OpCode o = (func->upvalues[i].k == VLOCAL) ? OP_MOVE : OP_GETUPVAL;
- luaK_codeABC(fs, o, 0, func->upvalues[i].info, 0);
- }
-}
-
-
-static void open_func (LexState *ls, FuncState *fs)
-{
- Proto *f = luaF_newproto(ls->L);
- fs->f = f;
- fs->prev = ls->fs; /* linked list of funcstates */
- fs->ls = ls;
- fs->L = ls->L;
- ls->fs = fs;
- fs->pc = 0;
- fs->lasttarget = 0;
- fs->jpc = NO_JUMP;
- fs->freereg = 0;
- fs->nk = 0;
- fs->h = luaH_new(ls->L, 0, 0);
- fs->np = 0;
- fs->nlocvars = 0;
- fs->nactvar = 0;
- fs->bl = NULL;
- f->source = ls->source;
- f->maxstacksize = 2; /* registers 0/1 are always valid */
-}
-
-
-static void close_func (LexState *ls)
-{
- lua_State *L = ls->L;
- FuncState *fs = ls->fs;
- Proto *f = fs->f;
- removevars(ls, 0);
- luaK_codeABC(fs, OP_RETURN, 0, 1, 0); /* final return */
- luaM_reallocvector(L, f->code, f->sizecode, fs->pc, Instruction);
- f->sizecode = fs->pc;
- luaM_reallocvector(L, f->lineinfo, f->sizelineinfo, fs->pc, int);
- f->sizelineinfo = fs->pc;
- luaM_reallocvector(L, f->k, f->sizek, fs->nk, TObject);
- f->sizek = fs->nk;
- luaM_reallocvector(L, f->p, f->sizep, fs->np, Proto *);
- f->sizep = fs->np;
- luaM_reallocvector(L, f->locvars, f->sizelocvars, fs->nlocvars, LocVar);
- f->sizelocvars = fs->nlocvars;
- luaM_reallocvector(L, f->upvalues, f->sizeupvalues, f->nups, TString *);
- f->sizeupvalues = f->nups;
- lua_assert(luaG_checkcode(f));
- lua_assert(fs->bl == NULL);
- ls->fs = fs->prev;
-}
-
-
-Proto *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff) {
- struct LexState lexstate;
- struct FuncState funcstate;
- lexstate.buff = buff;
- lexstate.nestlevel = 0;
- luaX_setinput(L, &lexstate, z, luaS_new(L, zname(z)));
- open_func(&lexstate, &funcstate);
- next(&lexstate); /* read first token */
- chunk(&lexstate);
- check_condition(&lexstate, (lexstate.t.token == TK_EOS), "<eof> expected");
- close_func(&lexstate);
- lua_assert(funcstate.prev == NULL);
- lua_assert(funcstate.f->nups == 0);
- lua_assert(lexstate.nestlevel == 0);
- return funcstate.f;
-}
-
-
-
-/*============================================================*/
-/* GRAMMAR RULES */
-/*============================================================*/
-
-
-static void luaY_field (LexState *ls, expdesc *v)
-{
- /* field -> ['.' | ':'] NAME */
- FuncState *fs = ls->fs;
- expdesc key;
- luaK_exp2anyreg(fs, v);
- next(ls); /* skip the dot or colon */
- checkname(ls, &key);
- luaK_indexed(fs, v, &key);
-}
-
-
-static void luaY_index (LexState *ls, expdesc *v)
-{
- /* index -> '[' expr ']' */
- next(ls); /* skip the '[' */
- expr(ls, v);
- luaK_exp2val(ls->fs, v);
- check(ls, ']');
-}
-
-
-/*
-** {======================================================================
-** Rules for Constructors
-** =======================================================================
-*/
-
-
-struct ConsControl {
- expdesc v; /* last list item read */
- expdesc *t; /* table descriptor */
- int nh; /* total number of `record' elements */
- int na; /* total number of array elements */
- int tostore; /* number of array elements pending to be stored */
-};
-
-
-static void recfield (LexState *ls, struct ConsControl *cc)
-{
- /* recfield -> (NAME | `['exp1`]') = exp1 */
- FuncState *fs = ls->fs;
- int reg = ls->fs->freereg;
- expdesc key, val;
- if (ls->t.token == TK_NAME) {
- luaX_checklimit(ls, cc->nh, MAX_INT, "items in a constructor");
- cc->nh++;
- checkname(ls, &key);
- }
- else /* ls->t.token == '[' */
- luaY_index(ls, &key);
- check(ls, '=');
- luaK_exp2RK(fs, &key);
- expr(ls, &val);
- luaK_codeABC(fs, OP_SETTABLE, cc->t->info, luaK_exp2RK(fs, &key),
- luaK_exp2RK(fs, &val));
- fs->freereg = reg; /* free registers */
-}
-
-
-static void closelistfield (FuncState *fs, struct ConsControl *cc)
-{
- if (cc->v.k == VVOID) return; /* there is no list item */
- luaK_exp2nextreg(fs, &cc->v);
- cc->v.k = VVOID;
- if (cc->tostore == LFIELDS_PER_FLUSH) {
- luaK_codeABx(fs, OP_SETLIST, cc->t->info, cc->na-1); /* flush */
- cc->tostore = 0; /* no more items pending */
- fs->freereg = cc->t->info + 1; /* free registers */
- }
-}
-
-
-static void lastlistfield (FuncState *fs, struct ConsControl *cc)
-{
- if (cc->tostore == 0) return;
- if (cc->v.k == VCALL) {
- luaK_setcallreturns(fs, &cc->v, LUA_MULTRET);
- luaK_codeABx(fs, OP_SETLISTO, cc->t->info, cc->na-1);
- }
- else {
- if (cc->v.k != VVOID)
- luaK_exp2nextreg(fs, &cc->v);
- luaK_codeABx(fs, OP_SETLIST, cc->t->info, cc->na-1);
- }
- fs->freereg = cc->t->info + 1; /* free registers */
-}
-
-
-static void listfield (LexState *ls, struct ConsControl *cc)
-{
- expr(ls, &cc->v);
- luaX_checklimit(ls, cc->na, MAXARG_Bx, "items in a constructor");
- cc->na++;
- cc->tostore++;
-}
-
-
-static void constructor (LexState *ls, expdesc *t)
-{
- /* constructor -> ?? */
- FuncState *fs = ls->fs;
- int line = ls->linenumber;
- int pc = luaK_codeABC(fs, OP_NEWTABLE, 0, 0, 0);
- struct ConsControl cc;
- cc.na = cc.nh = cc.tostore = 0;
- cc.t = t;
- init_exp(t, VRELOCABLE, pc);
- init_exp(&cc.v, VVOID, 0); /* no value (yet) */
- luaK_exp2nextreg(ls->fs, t); /* fix it at stack top (for gc) */
- check(ls, '{');
- do {
- lua_assert(cc.v.k == VVOID || cc.tostore > 0);
- testnext(ls, ';'); /* compatibility only */
- if (ls->t.token == '}') break;
- closelistfield(fs, &cc);
- switch(ls->t.token) {
- case TK_NAME: { /* may be listfields or recfields */
- lookahead(ls);
- if (ls->lookahead.token != '=') /* expression? */
- listfield(ls, &cc);
- else
- recfield(ls, &cc);
- break;
- }
- case '[': { /* constructor_item -> recfield */
- recfield(ls, &cc);
- break;
- }
- default: { /* constructor_part -> listfield */
- listfield(ls, &cc);
- break;
- }
- }
- } while (testnext(ls, ',') || testnext(ls, ';'));
- check_match(ls, '}', '{', line);
- lastlistfield(fs, &cc);
- SETARG_B(fs->f->code[pc], luaO_int2fb(cc.na)); /* set initial array size */
- SETARG_C(fs->f->code[pc], luaO_log2(cc.nh)+1); /* set initial table size */
-}
-
-/* }====================================================================== */
-
-
-
-static void parlist (LexState *ls)
-{
- /* parlist -> [ param { `,' param } ] */
- int nparams = 0;
- int dots = 0;
- if (ls->t.token != ')') { /* is `parlist' not empty? */
- do {
- switch (ls->t.token) {
- case TK_DOTS: dots = 1; next(ls); break;
- case TK_NAME: new_localvar(ls, str_checkname(ls), nparams++); break;
- default: luaX_syntaxerror(ls, "<name> or `...' expected");
- }
- } while (!dots && testnext(ls, ','));
- }
- code_params(ls, nparams, dots);
-}
-
-
-static void body (LexState *ls, expdesc *e, int needself, int line)
-{
- /* body -> `(' parlist `)' chunk END */
- FuncState new_fs;
- open_func(ls, &new_fs);
- new_fs.f->lineDefined = line;
- check(ls, '(');
- if (needself)
- create_local(ls, "self");
- parlist(ls);
- check(ls, ')');
- chunk(ls);
- check_match(ls, TK_END, TK_FUNCTION, line);
- close_func(ls);
- pushclosure(ls, &new_fs, e);
-}
-
-
-static int explist1 (LexState *ls, expdesc *v)
-{
- /* explist1 -> expr { `,' expr } */
- int n = 1; /* at least one expression */
- expr(ls, v);
- while (testnext(ls, ',')) {
- luaK_exp2nextreg(ls->fs, v);
- expr(ls, v);
- n++;
- }
- return n;
-}
-
-
-static void funcargs (LexState *ls, expdesc *f)
-{
- FuncState *fs = ls->fs;
- expdesc args;
- int base, nparams;
- int line = ls->linenumber;
- switch (ls->t.token) {
- case '(': { /* funcargs -> `(' [ explist1 ] `)' */
- if (line != ls->lastline)
- luaX_syntaxerror(ls,"ambiguous syntax (function call x new statement)");
- next(ls);
- if (ls->t.token == ')') /* arg list is empty? */
- args.k = VVOID;
- else {
- explist1(ls, &args);
- luaK_setcallreturns(fs, &args, LUA_MULTRET);
- }
- check_match(ls, ')', '(', line);
- break;
- }
- case '{': { /* funcargs -> constructor */
- constructor(ls, &args);
- break;
- }
- case TK_STRING: { /* funcargs -> STRING */
- codestring(ls, &args, ls->t.seminfo.ts);
- next(ls); /* must use `seminfo' before `next' */
- break;
- }
- default: {
- luaX_syntaxerror(ls, "function arguments expected");
- return;
- }
- }
- lua_assert(f->k == VNONRELOC);
- base = f->info; /* base register for call */
- if (args.k == VCALL)
- nparams = LUA_MULTRET; /* open call */
- else {
- if (args.k != VVOID)
- luaK_exp2nextreg(fs, &args); /* close last argument */
- nparams = fs->freereg - (base+1);
- }
- init_exp(f, VCALL, luaK_codeABC(fs, OP_CALL, base, nparams+1, 2));
- luaK_fixline(fs, line);
- fs->freereg = base+1; /* call remove function and arguments and leaves
- (unless changed) one result */
-}
-
-
-
-
-/*
-** {======================================================================
-** Expression parsing
-** =======================================================================
-*/
-
-
-static void prefixexp (LexState *ls, expdesc *v)
-{
- /* prefixexp -> NAME | '(' expr ')' */
- switch (ls->t.token) {
- case '(': {
- int line = ls->linenumber;
- next(ls);
- expr(ls, v);
- check_match(ls, ')', '(', line);
- luaK_dischargevars(ls->fs, v);
- return;
- }
- case TK_NAME: {
- singlevar(ls, v, 1);
- return;
- }
-#ifdef LUA_COMPATUPSYNTAX
- case '%': { /* for compatibility only */
- TString *varname;
- int line = ls->linenumber;
- next(ls); /* skip `%' */
- varname = singlevar(ls, v, 1);
- if (v->k != VUPVAL)
- luaX_errorline(ls, "global upvalues are obsolete",
- getstr(varname), line);
- return;
- }
-#endif
- default: {
- luaX_syntaxerror(ls, "unexpected symbol");
- return;
- }
- }
-}
-
-
-static void primaryexp (LexState *ls, expdesc *v)
-{
- /* primaryexp ->
- prefixexp { `.' NAME | `[' exp `]' | `:' NAME funcargs | funcargs } */
- FuncState *fs = ls->fs;
- prefixexp(ls, v);
- for (;;) {
- switch (ls->t.token) {
- case '.': { /* field */
- luaY_field(ls, v);
- break;
- }
- case '[': { /* `[' exp1 `]' */
- expdesc key;
- luaK_exp2anyreg(fs, v);
- luaY_index(ls, &key);
- luaK_indexed(fs, v, &key);
- break;
- }
- case ':': { /* `:' NAME funcargs */
- expdesc key;
- next(ls);
- checkname(ls, &key);
- luaK_self(fs, v, &key);
- funcargs(ls, v);
- break;
- }
- case '(': case TK_STRING: case '{': { /* funcargs */
- luaK_exp2nextreg(fs, v);
- funcargs(ls, v);
- break;
- }
- default: return;
- }
- }
-}
-
-
-static void simpleexp (LexState *ls, expdesc *v)
-{
- /* simpleexp -> NUMBER | STRING | NIL | constructor | FUNCTION body
- | primaryexp */
- switch (ls->t.token) {
- case TK_NUMBER: {
- init_exp(v, VK, luaK_numberK(ls->fs, ls->t.seminfo.r));
- next(ls); /* must use `seminfo' before `next' */
- break;
- }
- case TK_STRING: {
- codestring(ls, v, ls->t.seminfo.ts);
- next(ls); /* must use `seminfo' before `next' */
- break;
- }
- case TK_NIL: {
- init_exp(v, VNIL, 0);
- next(ls);
- break;
- }
- case TK_TRUE: {
- init_exp(v, VTRUE, 0);
- next(ls);
- break;
- }
- case TK_FALSE: {
- init_exp(v, VFALSE, 0);
- next(ls);
- break;
- }
- case '{': { /* constructor */
- constructor(ls, v);
- break;
- }
- case TK_FUNCTION: {
- next(ls);
- body(ls, v, 0, ls->linenumber);
- break;
- }
- default: {
- primaryexp(ls, v);
- break;
- }
- }
-}
-
-
-static UnOpr getunopr (int op)
-{
- switch (op) {
- case TK_NOT: return OPR_NOT;
- case '-': return OPR_MINUS;
- default: return OPR_NOUNOPR;
- }
-}
-
-
-static BinOpr getbinopr (int op)
-{
- switch (op) {
- case '+': return OPR_ADD;
- case '-': return OPR_SUB;
- case '*': return OPR_MULT;
- case '/': return OPR_DIV;
- case '^': return OPR_POW;
- case TK_CONCAT: return OPR_CONCAT;
- case TK_NE: return OPR_NE;
- case TK_EQ: return OPR_EQ;
- case '<': return OPR_LT;
- case TK_LE: return OPR_LE;
- case '>': return OPR_GT;
- case TK_GE: return OPR_GE;
- case TK_AND: return OPR_AND;
- case TK_OR: return OPR_OR;
- default: return OPR_NOBINOPR;
- }
-}
-
-
-static const struct {
- lu_byte left; /* left priority for each binary operator */
- lu_byte right; /* right priority */
-} priority[] = { /* ORDER OPR */
- {6, 6}, {6, 6}, {7, 7}, {7, 7}, /* arithmetic */
- {10, 9}, {5, 4}, /* power and concat (right associative) */
- {3, 3}, {3, 3}, /* equality */
- {3, 3}, {3, 3}, {3, 3}, {3, 3}, /* order */
- {2, 2}, {1, 1} /* logical (and/or) */
-};
-
-#define UNARY_PRIORITY 8 /* priority for unary operators */
-
-
-/*
-** subexpr -> (simplexep | unop subexpr) { binop subexpr }
-** where `binop' is any binary operator with a priority higher than `limit'
-*/
-static BinOpr subexpr (LexState *ls, expdesc *v, int limit)
-{
- BinOpr op;
- UnOpr uop;
- enterlevel(ls);
- uop = getunopr(ls->t.token);
- if (uop != OPR_NOUNOPR) {
- next(ls);
- subexpr(ls, v, UNARY_PRIORITY);
- luaK_prefix(ls->fs, uop, v);
- }
- else simpleexp(ls, v);
- /* expand while operators have priorities higher than `limit' */
- op = getbinopr(ls->t.token);
- while (op != OPR_NOBINOPR && cast(int, priority[op].left) > limit) {
- expdesc v2;
- BinOpr nextop;
- next(ls);
- luaK_infix(ls->fs, op, v);
- /* read sub-expression with higher priority */
- nextop = subexpr(ls, &v2, cast(int, priority[op].right));
- luaK_posfix(ls->fs, op, v, &v2);
- op = nextop;
- }
- leavelevel(ls);
- return op; /* return first untreated operator */
-}
-
-
-static void expr (LexState *ls, expdesc *v)
-{
- subexpr(ls, v, -1);
-}
-
-/* }==================================================================== */
-
-
-
-/*
-** {======================================================================
-** Rules for Statements
-** =======================================================================
-*/
-
-
-static int block_follow (int token)
-{
- switch (token) {
- case TK_ELSE: case TK_ELSEIF: case TK_END:
- case TK_UNTIL: case TK_EOS:
- return 1;
- default: return 0;
- }
-}
-
-
-static void block (LexState *ls)
-{
- /* block -> chunk */
- FuncState *fs = ls->fs;
- BlockCnt bl;
- enterblock(fs, &bl, 0);
- chunk(ls);
- lua_assert(bl.breaklist == NO_JUMP);
- leaveblock(fs);
-}
-
-
-/*
-** structure to chain all variables in the left-hand side of an
-** assignment
-*/
-struct LHS_assign {
- struct LHS_assign *prev;
- expdesc v; /* variable (global, local, upvalue, or indexed) */
-};
-
-
-/*
-** check whether, in an assignment to a local variable, the local variable
-** is needed in a previous assignment (to a table). If so, save original
-** local value in a safe place and use this safe copy in the previous
-** assignment.
-*/
-static void check_conflict (LexState *ls, struct LHS_assign *lh, expdesc *v)
-{
- FuncState *fs = ls->fs;
- int extra = fs->freereg; /* eventual position to save local variable */
- int conflict = 0;
- for (; lh; lh = lh->prev) {
- if (lh->v.k == VINDEXED) {
- if (lh->v.info == v->info) { /* conflict? */
- conflict = 1;
- lh->v.info = extra; /* previous assignment will use safe copy */
- }
- if (lh->v.aux == v->info) { /* conflict? */
- conflict = 1;
- lh->v.aux = extra; /* previous assignment will use safe copy */
- }
- }
- }
- if (conflict) {
- luaK_codeABC(fs, OP_MOVE, fs->freereg, v->info, 0); /* make copy */
- luaK_reserveregs(fs, 1);
- }
-}
-
-
-static void assignment (LexState *ls, struct LHS_assign *lh, int nvars)
-{
- expdesc e;
- check_condition(ls, VLOCAL <= lh->v.k && lh->v.k <= VINDEXED,
- "syntax error");
- if (testnext(ls, ',')) { /* assignment -> `,' primaryexp assignment */
- struct LHS_assign nv;
- nv.prev = lh;
- primaryexp(ls, &nv.v);
- if (nv.v.k == VLOCAL)
- check_conflict(ls, lh, &nv.v);
- assignment(ls, &nv, nvars+1);
- }
- else { /* assignment -> `=' explist1 */
- int nexps;
- check(ls, '=');
- nexps = explist1(ls, &e);
- if (nexps != nvars) {
- adjust_assign(ls, nvars, nexps, &e);
- if (nexps > nvars)
- ls->fs->freereg -= nexps - nvars; /* remove extra values */
- }
- else {
- luaK_setcallreturns(ls->fs, &e, 1); /* close last expression */
- luaK_storevar(ls->fs, &lh->v, &e);
- return; /* avoid default */
- }
- }
- init_exp(&e, VNONRELOC, ls->fs->freereg-1); /* default assignment */
- luaK_storevar(ls->fs, &lh->v, &e);
-}
-
-
-static void cond (LexState *ls, expdesc *v)
-{
- /* cond -> exp */
- expr(ls, v); /* read condition */
- if (v->k == VNIL) v->k = VFALSE; /* `falses' are all equal here */
- luaK_goiftrue(ls->fs, v);
- luaK_patchtohere(ls->fs, v->t);
-}
-
-
-/*
-** The while statement optimizes its code by coding the condition
-** after its body (and thus avoiding one jump in the loop).
-*/
-
-/*
-** maximum size of expressions for optimizing `while' code
-*/
-#ifndef MAXEXPWHILE
-#define MAXEXPWHILE 100
-#endif
-
-/*
-** the call `luaK_goiffalse' may grow the size of an expression by
-** at most this:
-*/
-#define EXTRAEXP 5
-
-static void whilestat (LexState *ls, int line)
-{
- /* whilestat -> WHILE cond DO block END */
- Instruction codeexp[MAXEXPWHILE + EXTRAEXP];
- int lineexp;
- int i;
- int sizeexp;
- FuncState *fs = ls->fs;
- int whileinit, blockinit, expinit;
- expdesc v;
- BlockCnt bl;
- next(ls); /* skip WHILE */
- whileinit = luaK_jump(fs); /* jump to condition (which will be moved) */
- expinit = luaK_getlabel(fs);
- expr(ls, &v); /* parse condition */
- if (v.k == VK) v.k = VTRUE; /* `trues' are all equal here */
- lineexp = ls->linenumber;
- luaK_goiffalse(fs, &v);
- luaK_concat(fs, &v.f, fs->jpc);
- fs->jpc = NO_JUMP;
- sizeexp = fs->pc - expinit; /* size of expression code */
- if (sizeexp > MAXEXPWHILE)
- luaX_syntaxerror(ls, "`while' condition too complex");
- for (i = 0; i < sizeexp; i++) /* save `exp' code */
- codeexp[i] = fs->f->code[expinit + i];
- fs->pc = expinit; /* remove `exp' code */
- enterblock(fs, &bl, 1);
- check(ls, TK_DO);
- blockinit = luaK_getlabel(fs);
- block(ls);
- luaK_patchtohere(fs, whileinit); /* initial jump jumps to here */
- /* move `exp' back to code */
- if (v.t != NO_JUMP) v.t += fs->pc - expinit;
- if (v.f != NO_JUMP) v.f += fs->pc - expinit;
- for (i=0; i<sizeexp; i++)
- luaK_code(fs, codeexp[i], lineexp);
- check_match(ls, TK_END, TK_WHILE, line);
- leaveblock(fs);
- luaK_patchlist(fs, v.t, blockinit); /* true conditions go back to loop */
- luaK_patchtohere(fs, v.f); /* false conditions finish the loop */
-}
-
-
-static void repeatstat (LexState *ls, int line)
-{
- /* repeatstat -> REPEAT block UNTIL cond */
- FuncState *fs = ls->fs;
- int repeat_init = luaK_getlabel(fs);
- expdesc v;
- BlockCnt bl;
- enterblock(fs, &bl, 1);
- next(ls);
- block(ls);
- check_match(ls, TK_UNTIL, TK_REPEAT, line);
- cond(ls, &v);
- luaK_patchlist(fs, v.f, repeat_init);
- leaveblock(fs);
-}
-
-
-static int exp1 (LexState *ls)
-{
- expdesc e;
- int k;
- expr(ls, &e);
- k = e.k;
- luaK_exp2nextreg(ls->fs, &e);
- return k;
-}
-
-
-static void forbody (LexState *ls, int base, int line, int nvars, int isnum)
-{
- BlockCnt bl;
- FuncState *fs = ls->fs;
- int prep, endfor;
- adjustlocalvars(ls, nvars); /* scope for all variables */
- check(ls, TK_DO);
- enterblock(fs, &bl, 1); /* loop block */
- prep = luaK_getlabel(fs);
- block(ls);
- luaK_patchtohere(fs, prep-1);
- endfor = (isnum) ? luaK_codeAsBx(fs, OP_FORLOOP, base, NO_JUMP) :
- luaK_codeABC(fs, OP_TFORLOOP, base, 0, nvars - 3);
- luaK_fixline(fs, line); /* pretend that `OP_FOR' starts the loop */
- luaK_patchlist(fs, (isnum) ? endfor : luaK_jump(fs), prep);
- leaveblock(fs);
-}
-
-
-static void fornum (LexState *ls, TString *varname, int line)
-{
- /* fornum -> NAME = exp1,exp1[,exp1] DO body */
- FuncState *fs = ls->fs;
- int base = fs->freereg;
- new_localvar(ls, varname, 0);
- new_localvarstr(ls, "(for limit)", 1);
- new_localvarstr(ls, "(for step)", 2);
- check(ls, '=');
- exp1(ls); /* initial value */
- check(ls, ',');
- exp1(ls); /* limit */
- if (testnext(ls, ','))
- exp1(ls); /* optional step */
- else { /* default step = 1 */
- luaK_codeABx(fs, OP_LOADK, fs->freereg, luaK_numberK(fs, 1));
- luaK_reserveregs(fs, 1);
- }
- luaK_codeABC(fs, OP_SUB, fs->freereg - 3, fs->freereg - 3, fs->freereg - 1);
- luaK_jump(fs);
- forbody(ls, base, line, 3, 1);
-}
-
-
-static void forlist (LexState *ls, TString *indexname)
-{
- /* forlist -> NAME {,NAME} IN explist1 DO body */
- FuncState *fs = ls->fs;
- expdesc e;
- int nvars = 0;
- int line;
- int base = fs->freereg;
- new_localvarstr(ls, "(for generator)", nvars++);
- new_localvarstr(ls, "(for state)", nvars++);
- new_localvar(ls, indexname, nvars++);
- while (testnext(ls, ','))
- new_localvar(ls, str_checkname(ls), nvars++);
- check(ls, TK_IN);
- line = ls->linenumber;
- adjust_assign(ls, nvars, explist1(ls, &e), &e);
- luaK_checkstack(fs, 3); /* extra space to call generator */
- luaK_codeAsBx(fs, OP_TFORPREP, base, NO_JUMP);
- forbody(ls, base, line, nvars, 0);
-}
-
-
-static void forstat (LexState *ls, int line)
-{
- /* forstat -> fornum | forlist */
- FuncState *fs = ls->fs;
- TString *varname;
- BlockCnt bl;
- enterblock(fs, &bl, 0); /* block to control variable scope */
- next(ls); /* skip `for' */
- varname = str_checkname(ls); /* first variable name */
- switch (ls->t.token) {
- case '=': fornum(ls, varname, line); break;
- case ',': case TK_IN: forlist(ls, varname); break;
- default: luaX_syntaxerror(ls, "`=' or `in' expected");
- }
- check_match(ls, TK_END, TK_FOR, line);
- leaveblock(fs);
-}
-
-
-static void test_then_block (LexState *ls, expdesc *v)
-{
- /* test_then_block -> [IF | ELSEIF] cond THEN block */
- next(ls); /* skip IF or ELSEIF */
- cond(ls, v);
- check(ls, TK_THEN);
- block(ls); /* `then' part */
-}
-
-
-static void ifstat (LexState *ls, int line)
-{
- /* ifstat -> IF cond THEN block {ELSEIF cond THEN block} [ELSE block] END */
- FuncState *fs = ls->fs;
- expdesc v;
- int escapelist = NO_JUMP;
- test_then_block(ls, &v); /* IF cond THEN block */
- while (ls->t.token == TK_ELSEIF) {
- luaK_concat(fs, &escapelist, luaK_jump(fs));
- luaK_patchtohere(fs, v.f);
- test_then_block(ls, &v); /* ELSEIF cond THEN block */
- }
- if (ls->t.token == TK_ELSE) {
- luaK_concat(fs, &escapelist, luaK_jump(fs));
- luaK_patchtohere(fs, v.f);
- next(ls); /* skip ELSE (after patch, for correct line info) */
- block(ls); /* `else' part */
- }
- else
- luaK_concat(fs, &escapelist, v.f);
- luaK_patchtohere(fs, escapelist);
- check_match(ls, TK_END, TK_IF, line);
-}
-
-
-static void localfunc (LexState *ls)
-{
- expdesc v, b;
- FuncState *fs = ls->fs;
- new_localvar(ls, str_checkname(ls), 0);
- init_exp(&v, VLOCAL, fs->freereg);
- luaK_reserveregs(fs, 1);
- adjustlocalvars(ls, 1);
- body(ls, &b, 0, ls->linenumber);
- luaK_storevar(fs, &v, &b);
- /* debug information will only see the variable after this point! */
- getlocvar(fs, fs->nactvar - 1).startpc = fs->pc;
-}
-
-
-static void localstat (LexState *ls)
-{
- /* stat -> LOCAL NAME {`,' NAME} [`=' explist1] */
- int nvars = 0;
- int nexps;
- expdesc e;
- do {
- new_localvar(ls, str_checkname(ls), nvars++);
- } while (testnext(ls, ','));
- if (testnext(ls, '='))
- nexps = explist1(ls, &e);
- else {
- e.k = VVOID;
- nexps = 0;
- }
- adjust_assign(ls, nvars, nexps, &e);
- adjustlocalvars(ls, nvars);
-}
-
-
-static int funcname (LexState *ls, expdesc *v)
-{
- /* funcname -> NAME {field} [`:' NAME] */
- int needself = 0;
- singlevar(ls, v, 1);
- while (ls->t.token == '.')
- luaY_field(ls, v);
- if (ls->t.token == ':') {
- needself = 1;
- luaY_field(ls, v);
- }
- return needself;
-}
-
-
-static void funcstat (LexState *ls, int line)
-{
- /* funcstat -> FUNCTION funcname body */
- int needself;
- expdesc v, b;
- next(ls); /* skip FUNCTION */
- needself = funcname(ls, &v);
- body(ls, &b, needself, line);
- luaK_storevar(ls->fs, &v, &b);
- luaK_fixline(ls->fs, line); /* definition `happens' in the first line */
-}
-
-
-static void exprstat (LexState *ls)
-{
- /* stat -> func | assignment */
- FuncState *fs = ls->fs;
- struct LHS_assign v;
- primaryexp(ls, &v.v);
- if (v.v.k == VCALL) { /* stat -> func */
- luaK_setcallreturns(fs, &v.v, 0); /* call statement uses no results */
- }
- else { /* stat -> assignment */
- v.prev = NULL;
- assignment(ls, &v, 1);
- }
-}
-
-
-static void retstat (LexState *ls)
-{
- /* stat -> RETURN explist */
- FuncState *fs = ls->fs;
- expdesc e;
- int first, nret; /* registers with returned values */
- next(ls); /* skip RETURN */
- if (block_follow(ls->t.token) || ls->t.token == ';')
- first = nret = 0; /* return no values */
- else {
- nret = explist1(ls, &e); /* optional return values */
- if (e.k == VCALL) {
- luaK_setcallreturns(fs, &e, LUA_MULTRET);
- if (nret == 1) { /* tail call? */
- SET_OPCODE(getcode(fs,&e), OP_TAILCALL);
- lua_assert(GETARG_A(getcode(fs,&e)) == fs->nactvar);
- }
- first = fs->nactvar;
- nret = LUA_MULTRET; /* return all values */
- }
- else {
- if (nret == 1) /* only one single value? */
- first = luaK_exp2anyreg(fs, &e);
- else {
- luaK_exp2nextreg(fs, &e); /* values must go to the `stack' */
- first = fs->nactvar; /* return all `active' values */
- lua_assert(nret == fs->freereg - first);
- }
- }
- }
- luaK_codeABC(fs, OP_RETURN, first, nret+1, 0);
-}
-
-
-static void breakstat (LexState *ls)
-{
- /* stat -> BREAK [NAME] */
- FuncState *fs = ls->fs;
- BlockCnt *bl = fs->bl;
- int upval = 0;
- next(ls); /* skip BREAK */
- while (bl && !bl->isbreakable) {
- upval |= bl->upval;
- bl = bl->previous;
- }
- if (!bl)
- luaX_syntaxerror(ls, "no loop to break");
- if (upval)
- luaK_codeABC(fs, OP_CLOSE, bl->nactvar, 0, 0);
- luaK_concat(fs, &bl->breaklist, luaK_jump(fs));
-}
-
-
-static int statement (LexState *ls)
-{
- int line = ls->linenumber; /* may be needed for error messages */
- switch (ls->t.token) {
- case TK_IF: { /* stat -> ifstat */
- ifstat(ls, line);
- return 0;
- }
- case TK_WHILE: { /* stat -> whilestat */
- whilestat(ls, line);
- return 0;
- }
- case TK_DO: { /* stat -> DO block END */
- next(ls); /* skip DO */
- block(ls);
- check_match(ls, TK_END, TK_DO, line);
- return 0;
- }
- case TK_FOR: { /* stat -> forstat */
- forstat(ls, line);
- return 0;
- }
- case TK_REPEAT: { /* stat -> repeatstat */
- repeatstat(ls, line);
- return 0;
- }
- case TK_FUNCTION: {
- funcstat(ls, line); /* stat -> funcstat */
- return 0;
- }
- case TK_LOCAL: { /* stat -> localstat */
- next(ls); /* skip LOCAL */
- if (testnext(ls, TK_FUNCTION)) /* local function? */
- localfunc(ls);
- else
- localstat(ls);
- return 0;
- }
- case TK_RETURN: { /* stat -> retstat */
- retstat(ls);
- return 1; /* must be last statement */
- }
- case TK_BREAK: { /* stat -> breakstat */
- breakstat(ls);
- return 1; /* must be last statement */
- }
- default: {
- exprstat(ls);
- return 0; /* to avoid warnings */
- }
- }
-}
-
-
-static void chunk (LexState *ls)
-{
- /* chunk -> { stat [`;'] } */
- int islast = 0;
- enterlevel(ls);
- while (!islast && !block_follow(ls->t.token)) {
- islast = statement(ls);
- testnext(ls, ';');
- lua_assert(ls->fs->freereg >= ls->fs->nactvar);
- ls->fs->freereg = ls->fs->nactvar; /* free registers */
- }
- leavelevel(ls);
-}
-
-/* }====================================================================== */
+++ /dev/null
-/*
-** $Id: lparser.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Lua Parser
-** See Copyright Notice in lua.h
-*/
-
-#ifndef lparser_h
-#define lparser_h
-
-#include "llimits.h"
-#include "lobject.h"
-#include "ltable.h"
-#include "lzio.h"
-
-
-/*
-** Expression descriptor
-*/
-
-typedef enum {
- VVOID, /* no value */
- VNIL,
- VTRUE,
- VFALSE,
- VK, /* info = index of constant in `k' */
- VLOCAL, /* info = local register */
- VUPVAL, /* info = index of upvalue in `upvalues' */
- VGLOBAL, /* info = index of table; aux = index of global name in `k' */
- VINDEXED, /* info = table register; aux = index register (or `k') */
- VJMP, /* info = instruction pc */
- VRELOCABLE, /* info = instruction pc */
- VNONRELOC, /* info = result register */
- VCALL /* info = result register */
-} expkind;
-
-typedef struct expdesc {
- expkind k;
- int info, aux;
- int t; /* patch list of `exit when true' */
- int f; /* patch list of `exit when false' */
-} expdesc;
-
-
-struct BlockCnt; /* defined in lparser.c */
-
-
-/* state needed to generate code for a given function */
-typedef struct FuncState {
- Proto *f; /* current function header */
- Table *h; /* table to find (and reuse) elements in `k' */
- struct FuncState *prev; /* enclosing function */
- struct LexState *ls; /* lexical state */
- struct lua_State *L; /* copy of the Lua state */
- struct BlockCnt *bl; /* chain of current blocks */
- int pc; /* next position to code (equivalent to `ncode') */
- int lasttarget; /* `pc' of last `jump target' */
- int jpc; /* list of pending jumps to `pc' */
- int freereg; /* first free register */
- int nk; /* number of elements in `k' */
- int np; /* number of elements in `p' */
- int nlocvars; /* number of elements in `locvars' */
- int nactvar; /* number of active local variables */
- expdesc upvalues[MAXUPVALUES]; /* upvalues */
- int actvar[MAXVARS]; /* declared-variable stack */
-} FuncState;
-
-
-Proto *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff);
-
-
-#endif
+++ /dev/null
-/*
-** $Id: lstate.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Global State
-** See Copyright Notice in lua.h
-*/
-
-
-#include <stdlib.h>
-
-#define lstate_c
-
-#include "lua.h"
-
-#include "ldebug.h"
-#include "ldo.h"
-#include "lfunc.h"
-#include "lgc.h"
-#include "llex.h"
-#include "lmem.h"
-#include "lstate.h"
-#include "lstring.h"
-#include "ltable.h"
-#include "ltm.h"
-
-
-/*
-** macro to allow the inclusion of user information in Lua state
-*/
-#ifndef LUA_USERSTATE
-#define EXTRASPACE 0
-#else
-union UEXTRASPACE {L_Umaxalign a; LUA_USERSTATE b;};
-#define EXTRASPACE (sizeof(union UEXTRASPACE))
-#endif
-
-
-
-/*
-** you can change this function through the official API:
-** call `lua_setpanicf'
-*/
-static int default_panic (lua_State *L)
-{
- UNUSED(L);
- return 0;
-}
-
-
-static lua_State *mallocstate (lua_State *L)
-{
- lu_byte *block = (lu_byte *)luaM_malloc(L, sizeof(lua_State) + EXTRASPACE);
- if (block == NULL) return NULL;
- else {
- block += EXTRASPACE;
- return cast(lua_State *, block);
- }
-}
-
-
-static void freestate (lua_State *L, lua_State *L1)
-{
- luaM_free(L, cast(lu_byte *, L1) - EXTRASPACE,
- sizeof(lua_State) + EXTRASPACE);
-}
-
-
-static void stack_init (lua_State *L1, lua_State *L)
-{
- L1->stack = luaM_newvector(L, BASIC_STACK_SIZE + EXTRA_STACK, TObject);
- L1->stacksize = BASIC_STACK_SIZE + EXTRA_STACK;
- L1->top = L1->stack;
- L1->stack_last = L1->stack+(L1->stacksize - EXTRA_STACK)-1;
- L1->base_ci = luaM_newvector(L, BASIC_CI_SIZE, CallInfo);
- L1->ci = L1->base_ci;
- L1->ci->state = CI_C; /* not a Lua function */
- setnilvalue(L1->top++); /* `function' entry for this `ci' */
- L1->base = L1->ci->base = L1->top;
- L1->ci->top = L1->top + LUA_MINSTACK;
- L1->size_ci = BASIC_CI_SIZE;
- L1->end_ci = L1->base_ci + L1->size_ci;
-}
-
-
-static void freestack (lua_State *L, lua_State *L1)
-{
- luaM_freearray(L, L1->base_ci, L1->size_ci, CallInfo);
- luaM_freearray(L, L1->stack, L1->stacksize, TObject);
-}
-
-
-/*
-** open parts that may cause memory-allocation errors
-*/
-static void f_luaopen (lua_State *L, void *ud)
-{
- /* create a new global state */
- global_State *g = luaM_new(NULL, global_State);
- UNUSED(ud);
- if (g == NULL) luaD_throw(L, LUA_ERRMEM);
- L->l_G = g;
- g->mainthread = L;
- g->GCthreshold = 0; /* mark it as unfinished state */
- g->strt.size = 0;
- g->strt.nuse = 0;
- g->strt.hash = NULL;
- setnilvalue(defaultmeta(L));
- setnilvalue(registry(L));
- luaZ_initbuffer(L, &g->buff);
- g->panic = default_panic;
- g->rootgc = NULL;
- g->rootudata = NULL;
- g->tmudata = NULL;
- setnilvalue(gkey(g->dummynode));
- setnilvalue(gval(g->dummynode));
- g->dummynode->next = NULL;
- g->nblocks = sizeof(lua_State) + sizeof(global_State);
- stack_init(L, L); /* init stack */
- /* create default meta table with a dummy table, and then close the loop */
- defaultmeta(L)->tt = LUA_TTABLE;
- sethvalue(defaultmeta(L), luaH_new(L, 0, 0));
- hvalue(defaultmeta(L))->metatable = hvalue(defaultmeta(L));
- sethvalue(gt(L), luaH_new(L, 0, 4)); /* table of globals */
- sethvalue(registry(L), luaH_new(L, 4, 4)); /* registry */
- luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */
- luaT_init(L);
- luaX_init(L);
- luaS_fix(luaS_newliteral(L, MEMERRMSG));
- g->GCthreshold = 4*G(L)->nblocks;
-}
-
-
-static void preinit_state (lua_State *L)
-{
- L->stack = NULL;
- L->stacksize = 0;
- L->errorJmp = NULL;
- L->hook = NULL;
- L->hookmask = L->hookinit = 0;
- L->basehookcount = 0;
- L->allowhook = 1;
- resethookcount(L);
- L->openupval = NULL;
- L->size_ci = 0;
- L->nCcalls = 0;
- L->ci = L->base_ci = NULL;
- L->errfunc = 0;
- setnilvalue(gt(L));
-}
-
-
-static void close_state (lua_State *L)
-{
- luaF_close(L, L->stack); /* close all upvalues for this thread */
- if (G(L)) { /* close global state */
- luaC_sweep(L, 1); /* collect all elements */
- lua_assert(G(L)->rootgc == NULL);
- lua_assert(G(L)->rootudata == NULL);
- luaS_freeall(L);
- luaZ_freebuffer(L, &G(L)->buff);
- }
- freestack(L, L);
- if (G(L)) {
- lua_assert(G(L)->nblocks == sizeof(lua_State) + sizeof(global_State));
- luaM_freelem(NULL, G(L));
- }
- freestate(NULL, L);
-}
-
-
-lua_State *luaE_newthread (lua_State *L) {
- lua_State *L1 = mallocstate(L);
- luaC_link(L, valtogco(L1), LUA_TTHREAD);
- preinit_state(L1);
- L1->l_G = L->l_G;
- stack_init(L1, L); /* init stack */
- setobj2n(gt(L1), gt(L)); /* share table of globals */
- return L1;
-}
-
-
-void luaE_freethread (lua_State *L, lua_State *L1) {
- luaF_close(L1, L1->stack); /* close all upvalues for this thread */
- lua_assert(L1->openupval == NULL);
- freestack(L, L1);
- freestate(L, L1);
-}
-
-
-LUA_API lua_State *lua_open (void) {
- lua_State *L = mallocstate(NULL);
- if (L) { /* allocation OK? */
- L->tt = LUA_TTHREAD;
- L->marked = 0;
- L->next = L->gclist = NULL;
- preinit_state(L);
- L->l_G = NULL;
- if (luaD_rawrunprotected(L, f_luaopen, NULL) != 0) {
- /* memory allocation error: free partial state */
- close_state(L);
- L = NULL;
- }
- }
- lua_userstateopen(L);
- return L;
-}
-
-
-static void callallgcTM (lua_State *L, void *ud)
-{
- UNUSED(ud);
- luaC_callGCTM(L); /* call GC metamethods for all udata */
-}
-
-
-LUA_API void lua_close (lua_State *L) {
- lua_lock(L);
- L = G(L)->mainthread; /* only the main thread can be closed */
- luaF_close(L, L->stack); /* close all upvalues for this thread */
- luaC_separateudata(L); /* separate udata that have GC metamethods */
- L->errfunc = 0; /* no error function during GC metamethods */
- do { /* repeat until no more errors */
- L->ci = L->base_ci;
- L->base = L->top = L->ci->base;
- L->nCcalls = 0;
- } while (luaD_rawrunprotected(L, callallgcTM, NULL) != 0);
- lua_assert(G(L)->tmudata == NULL);
- close_state(L);
-}
-
+++ /dev/null
-/*
-** $Id: lstate.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Global State
-** See Copyright Notice in lua.h
-*/
-
-#ifndef lstate_h
-#define lstate_h
-
-#include "lua.h"
-
-#include "lobject.h"
-#include "ltm.h"
-#include "lzio.h"
-
-
-/*
-** macros for thread synchronization inside Lua core machine:
-** all accesses to the global state and to global objects are synchronized.
-** Because threads can read the stack of other threads
-** (when running garbage collection),
-** a thread must also synchronize any write-access to its own stack.
-** Unsynchronized accesses are allowed only when reading its own stack,
-** or when reading immutable fields from global objects
-** (such as string values and udata values).
-*/
-#ifndef lua_lock
-#define lua_lock(L) ((void) 0)
-#endif
-
-#ifndef lua_unlock
-#define lua_unlock(L) ((void) 0)
-#endif
-
-
-#ifndef lua_userstateopen
-#define lua_userstateopen(l)
-#endif
-
-
-
-struct lua_longjmp; /* defined in ldo.c */
-
-
-/* default meta table (both for tables and udata) */
-#define defaultmeta(L) (&G(L)->_defaultmeta)
-
-/* table of globals */
-#define gt(L) (&L->_gt)
-
-/* registry */
-#define registry(L) (&G(L)->_registry)
-
-
-/* extra stack space to handle TM calls and some other extras */
-#define EXTRA_STACK 5
-
-
-#define BASIC_CI_SIZE 8
-
-#define BASIC_STACK_SIZE (2*LUA_MINSTACK)
-
-
-
-typedef struct stringtable {
- GCObject **hash;
- ls_nstr nuse; /* number of elements */
- int size;
-} stringtable;
-
-
-/*
-** informations about a call
-*/
-typedef struct CallInfo {
- StkId base; /* base for called function */
- StkId top; /* top for this function */
- int state; /* bit fields; see below */
- union {
- struct { /* for Lua functions */
- const Instruction *savedpc;
- const Instruction **pc; /* points to `pc' variable in `luaV_execute' */
- int tailcalls; /* number of tail calls lost under this entry */
- } l;
- struct { /* for C functions */
- int dummy; /* just to avoid an empty struct */
- } c;
- } u;
-} CallInfo;
-
-
-/*
-** bit fields for `CallInfo.state'
-*/
-#define CI_C (1<<0) /* 1 if function is a C function */
-/* 1 if (Lua) function has an active `luaV_execute' running it */
-#define CI_HASFRAME (1<<1)
-/* 1 if Lua function is calling another Lua function (and therefore its
- `pc' is being used by the other, and therefore CI_SAVEDPC is 1 too) */
-#define CI_CALLING (1<<2)
-#define CI_SAVEDPC (1<<3) /* 1 if `savedpc' is updated */
-#define CI_YIELD (1<<4) /* 1 if thread is suspended */
-
-
-#define ci_func(ci) (clvalue((ci)->base - 1))
-
-
-/*
-** `global state', shared by all threads of this state
-*/
-typedef struct global_State {
- stringtable strt; /* hash table for strings */
- GCObject *rootgc; /* list of (almost) all collectable objects */
- GCObject *rootudata; /* (separated) list of all userdata */
- GCObject *tmudata; /* list of userdata to be GC */
- Mbuffer buff; /* temporary buffer for string concatentation */
- lu_mem GCthreshold;
- lu_mem nblocks; /* number of `bytes' currently allocated */
- lua_CFunction panic; /* to be called in unprotected errors */
- TObject _registry;
- TObject _defaultmeta;
- struct lua_State *mainthread;
- Node dummynode[1]; /* common node array for all empty tables */
- TString *tmname[TM_N]; /* array with tag-method names */
-} global_State;
-
-
-/*
-** `per thread' state
-*/
-struct lua_State {
- CommonHeader;
- StkId top; /* first free slot in the stack */
- StkId base; /* base of current function */
- global_State *l_G;
- CallInfo *ci; /* call info for current function */
- StkId stack_last; /* last free slot in the stack */
- StkId stack; /* stack base */
- int stacksize;
- CallInfo *end_ci; /* points after end of ci array*/
- CallInfo *base_ci; /* array of CallInfo's */
- unsigned short size_ci; /* size of array `base_ci' */
- unsigned short nCcalls; /* number of nested C calls */
- lu_byte hookmask;
- lu_byte allowhook;
- lu_byte hookinit;
- int basehookcount;
- int hookcount;
- lua_Hook hook;
- TObject _gt; /* table of globals */
- GCObject *openupval; /* list of open upvalues in this stack */
- GCObject *gclist;
- struct lua_longjmp *errorJmp; /* current error recover point */
- ptrdiff_t errfunc; /* current error handling function (stack index) */
-};
-
-
-#define G(L) (L->l_G)
-
-
-/*
-** Union of all collectable objects
-*/
-union GCObject {
- GCheader gch;
- union TString ts;
- union Udata u;
- union Closure cl;
- struct Table h;
- struct Proto p;
- struct UpVal uv;
- struct lua_State th; /* thread */
-};
-
-
-/* macros to convert a GCObject into a specific value */
-#define gcotots(o) check_exp((o)->gch.tt == LUA_TSTRING, &((o)->ts))
-#define gcotou(o) check_exp((o)->gch.tt == LUA_TUSERDATA, &((o)->u))
-#define gcotocl(o) check_exp((o)->gch.tt == LUA_TFUNCTION, &((o)->cl))
-#define gcotoh(o) check_exp((o)->gch.tt == LUA_TTABLE, &((o)->h))
-#define gcotop(o) check_exp((o)->gch.tt == LUA_TPROTO, &((o)->p))
-#define gcotouv(o) check_exp((o)->gch.tt == LUA_TUPVAL, &((o)->uv))
-#define ngcotouv(o) \
- check_exp((o) == NULL || (o)->gch.tt == LUA_TUPVAL, &((o)->uv))
-#define gcototh(o) check_exp((o)->gch.tt == LUA_TTHREAD, &((o)->th))
-
-/* macro to convert any value into a GCObject */
-#define valtogco(v) (cast(GCObject *, (v)))
-
-
-lua_State *luaE_newthread (lua_State *L);
-void luaE_freethread (lua_State *L, lua_State *L1);
-
-#endif
-
+++ /dev/null
-/*
-** $Id: lstring.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** String table (keeps all strings handled by Lua)
-** See Copyright Notice in lua.h
-*/
-
-
-#include <string.h>
-
-#define lstring_c
-
-#include "lua.h"
-
-#include "lmem.h"
-#include "lobject.h"
-#include "lstate.h"
-#include "lstring.h"
-
-
-
-void luaS_freeall (lua_State *L) {
- lua_assert(G(L)->strt.nuse==0);
- luaM_freearray(L, G(L)->strt.hash, G(L)->strt.size, TString *);
-}
-
-
-void luaS_resize (lua_State *L, int newsize) {
- GCObject **newhash = luaM_newvector(L, newsize, GCObject *);
- stringtable *tb = &G(L)->strt;
- int i;
- for (i=0; i<newsize; i++) newhash[i] = NULL;
- /* rehash */
- for (i=0; i<tb->size; i++) {
- GCObject *p = tb->hash[i];
- while (p) { /* for each node in the list */
- GCObject *next = p->gch.next; /* save next */
- lu_hash h = gcotots(p)->tsv.hash;
- int h1 = lmod(h, newsize); /* new position */
- lua_assert(cast(int, h%newsize) == lmod(h, newsize));
- p->gch.next = newhash[h1]; /* chain it */
- newhash[h1] = p;
- p = next;
- }
- }
- luaM_freearray(L, tb->hash, tb->size, TString *);
- tb->size = newsize;
- tb->hash = newhash;
-}
-
-
-static TString *newlstr (lua_State *L, const char *str, size_t l, lu_hash h)
-{
- TString *ts = cast(TString *, luaM_malloc(L, sizestring(l)));
- stringtable *tb;
- ts->tsv.len = l;
- ts->tsv.hash = h;
- ts->tsv.marked = 0;
- ts->tsv.tt = LUA_TSTRING;
- ts->tsv.reserved = 0;
- memcpy(ts+1, str, l*sizeof(char));
- ((char *)(ts+1))[l] = '\0'; /* ending 0 */
- tb = &G(L)->strt;
- h = lmod(h, tb->size);
- ts->tsv.next = tb->hash[h]; /* chain new entry */
- tb->hash[h] = valtogco(ts);
- tb->nuse++;
- if (tb->nuse > cast(ls_nstr, tb->size) && tb->size <= MAX_INT/2)
- luaS_resize(L, tb->size*2); /* too crowded */
- return ts;
-}
-
-
-TString *luaS_newlstr (lua_State *L, const char *str, size_t l) {
- GCObject *o;
- lu_hash h = (lu_hash)l; /* seed */
- size_t step = (l>>5)+1; /* if string is too long, don't hash all its chars */
- size_t l1;
- for (l1=l; l1>=step; l1-=step) /* compute hash */
- h = h ^ ((h<<5)+(h>>2)+(unsigned char)(str[l1-1]));
- for (o = G(L)->strt.hash[lmod(h, G(L)->strt.size)];
- o != NULL;
- o = o->gch.next) {
- TString *ts = gcotots(o);
- if (ts->tsv.len == l && (memcmp(str, getstr(ts), l) == 0))
- return ts;
- }
- return newlstr(L, str, l, h); /* not found */
-}
-
-
-Udata *luaS_newudata (lua_State *L, size_t s) {
- Udata *u;
- u = cast(Udata *, luaM_malloc(L, sizeudata(s)));
- u->uv.marked = (1<<1); /* is not finalized */
- u->uv.tt = LUA_TUSERDATA;
- u->uv.len = s;
- u->uv.metatable = hvalue(defaultmeta(L));
- /* chain it on udata list */
- u->uv.next = G(L)->rootudata;
- G(L)->rootudata = valtogco(u);
- return u;
-}
-
+++ /dev/null
-/*
-** $Id: lstring.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** String table (keep all strings handled by Lua)
-** See Copyright Notice in lua.h
-*/
-
-#ifndef lstring_h
-#define lstring_h
-
-
-#include "lobject.h"
-#include "lstate.h"
-
-
-
-#define sizestring(l) (cast(lu_mem, sizeof(union TString))+ \
- (cast(lu_mem, l)+1)*sizeof(char))
-
-#define sizeudata(l) (cast(lu_mem, sizeof(union Udata))+(l))
-
-#define luaS_new(L, s) (luaS_newlstr(L, s, strlen(s)))
-#define luaS_newliteral(L, s) (luaS_newlstr(L, "" s, \
- (sizeof(s)/sizeof(char))-1))
-
-#define luaS_fix(s) ((s)->tsv.marked |= (1<<4))
-
-void luaS_resize (lua_State *L, int newsize);
-Udata *luaS_newudata (lua_State *L, size_t s);
-void luaS_freeall (lua_State *L);
-TString *luaS_newlstr (lua_State *L, const char *str, size_t l);
-
-
-#endif
+++ /dev/null
-/*
-** $Id: ltable.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Lua tables (hash)
-** See Copyright Notice in lua.h
-*/
-
-
-/*
-** Implementation of tables (aka arrays, objects, or hash tables).
-** Tables keep its elements in two parts: an array part and a hash part.
-** Non-negative integer keys are all candidates to be kept in the array
-** part. The actual size of the array is the largest `n' such that at
-** least half the slots between 0 and n are in use.
-** Hash uses a mix of chained scatter table with Brent's variation.
-** A main invariant of these tables is that, if an element is not
-** in its main position (i.e. the `original' position that its hash gives
-** to it), then the colliding element is in its own main position.
-** In other words, there are collisions only when two elements have the
-** same main position (i.e. the same hash values for that table size).
-** Because of that, the load factor of these tables can be 100% without
-** performance penalties.
-*/
-
-#include <string.h>
-
-#define ltable_c
-
-#include "lua.h"
-
-#include "ldebug.h"
-#include "ldo.h"
-#include "lgc.h"
-#include "lmem.h"
-#include "lobject.h"
-#include "lstate.h"
-#include "ltable.h"
-
-
-/*
-** max size of array part is 2^MAXBITS
-*/
-#if BITS_INT > 26
-#define MAXBITS 24
-#else
-#define MAXBITS (BITS_INT-2)
-#endif
-
-/* check whether `x' < 2^MAXBITS */
-#define toobig(x) ((((x)-1) >> MAXBITS) != 0)
-
-
-/* function to convert a lua_Number to int (with any rounding method) */
-#ifndef lua_number2int
-#define lua_number2int(i,n) ((i)=(int)(n))
-#endif
-
-
-#define hashpow2(t,n) (gnode(t, lmod((n), sizenode(t))))
-
-#define hashstr(t,str) hashpow2(t, (str)->tsv.hash)
-#define hashboolean(t,p) hashpow2(t, p)
-
-
-/*
-** for some types, it is better to avoid modulus by power of 2, as
-** they tend to have many 2 factors.
-*/
-#define hashmod(t,n) (gnode(t, ((n) % ((sizenode(t)-1)|1))))
-
-
-#define hashpointer(t,p) hashmod(t, IntPoint(p))
-
-
-/*
-** number of ints inside a lua_Number
-*/
-#define numints cast(int, sizeof(lua_Number)/sizeof(int))
-
-
-/*
-** hash for lua_Numbers
-*/
-static Node *hashnum (const Table *t, lua_Number n)
-{
- unsigned int a[numints];
- int i;
- n += 1; /* normalize number (avoid -0) */
- lua_assert(sizeof(a) <= sizeof(n));
- memcpy(a, &n, sizeof(a));
- for (i = 1; i < numints; i++) a[0] += a[i];
- return hashmod(t, cast(lu_hash, a[0]));
-}
-
-
-
-/*
-** returns the `main' position of an element in a table (that is, the index
-** of its hash value)
-*/
-Node *luaH_mainposition (const Table *t, const TObject *key) {
- switch (ttype(key)) {
- case LUA_TNUMBER:
- return hashnum(t, nvalue(key));
- case LUA_TSTRING:
- return hashstr(t, tsvalue(key));
- case LUA_TBOOLEAN:
- return hashboolean(t, bvalue(key));
- case LUA_TLIGHTUSERDATA:
- return hashpointer(t, pvalue(key));
- default:
- return hashpointer(t, gcvalue(key));
- }
-}
-
-
-/*
-** returns the index for `key' if `key' is an appropriate key to live in
-** the array part of the table, -1 otherwise.
-*/
-static int arrayindex (const TObject *key)
-{
- if (ttisnumber(key)) {
- int k;
- lua_number2int(k, (nvalue(key)));
- if (cast(lua_Number, k) == nvalue(key) && k >= 1 && !toobig(k))
- return k;
- }
- return -1; /* `key' did not match some condition */
-}
-
-
-/*
-** returns the index of a `key' for table traversals. First goes all
-** elements in the array part, then elements in the hash part. The
-** beginning and end of a traversal are signalled by -1.
-*/
-static int luaH_index (lua_State *L, Table *t, StkId key)
-{
- int i;
- if (ttisnil(key)) return -1; /* first iteration */
- i = arrayindex(key);
- if (0 <= i && i <= t->sizearray) { /* is `key' inside array part? */
- return i-1; /* yes; that's the index (corrected to C) */
- }
- else {
- const TObject *v = luaH_get(t, key);
- if (v == &luaO_nilobject)
- luaG_runerror(L, "invalid key for `next'");
- i = cast(int, (cast(const lu_byte *, v) -
- cast(const lu_byte *, gval(gnode(t, 0)))) / sizeof(Node));
- return i + t->sizearray; /* hash elements are numbered after array ones */
- }
-}
-
-
-int luaH_next (lua_State *L, Table *t, StkId key) {
- int i = luaH_index(L, t, key); /* find original element */
- for (i++; i < t->sizearray; i++) { /* try first array part */
- if (!ttisnil(&t->array[i])) { /* a non-nil value? */
- setnvalue(key, cast(lua_Number, i+1));
- setobj2s(key+1, &t->array[i]);
- return 1;
- }
- }
- for (i -= t->sizearray; i < sizenode(t); i++) { /* then hash part */
- if (!ttisnil(gval(gnode(t, i)))) { /* a non-nil value? */
- setobj2s(key, gkey(gnode(t, i)));
- setobj2s(key+1, gval(gnode(t, i)));
- return 1;
- }
- }
- return 0; /* no more elements */
-}
-
-
-/*
-** {=============================================================
-** Rehash
-** ==============================================================
-*/
-
-
-static void computesizes (int nums[], int ntotal, int *narray, int *nhash)
-{
- int i;
- int a = nums[0]; /* number of elements smaller than 2^i */
- int na = a; /* number of elements to go to array part */
- int n = (na == 0) ? -1 : 0; /* (log of) optimal size for array part */
- for (i = 1; a < *narray && *narray >= twoto(i-1); i++) {
- if (nums[i] > 0) {
- a += nums[i];
- if (a >= twoto(i-1)) { /* more than half elements in use? */
- n = i;
- na = a;
- }
- }
- }
- lua_assert(na <= *narray && *narray <= ntotal);
- *nhash = ntotal - na;
- *narray = (n == -1) ? 0 : twoto(n);
- lua_assert(na <= *narray && na >= *narray/2);
-}
-
-
-static void numuse (const Table *t, int *narray, int *nhash)
-{
- int nums[MAXBITS+1];
- int i, lg;
- int totaluse = 0;
- /* count elements in array part */
- for (i=0, lg=0; lg<=MAXBITS; lg++) { /* for each slice [2^(lg-1) to 2^lg) */
- int ttlg = twoto(lg); /* 2^lg */
- if (ttlg > t->sizearray) {
- ttlg = t->sizearray;
- if (i >= ttlg) break;
- }
- nums[lg] = 0;
- for (; i<ttlg; i++) {
- if (!ttisnil(&t->array[i])) {
- nums[lg]++;
- totaluse++;
- }
- }
- }
- for (; lg<=MAXBITS; lg++) nums[lg] = 0; /* reset other counts */
- *narray = totaluse; /* all previous uses were in array part */
- /* count elements in hash part */
- i = sizenode(t);
- while (i--) {
- Node *n = &t->node[i];
- if (!ttisnil(gval(n))) {
- int k = arrayindex(gkey(n));
- if (k >= 0) { /* is `key' an appropriate array index? */
- nums[luaO_log2(k-1)+1]++; /* count as such */
- (*narray)++;
- }
- totaluse++;
- }
- }
- computesizes(nums, totaluse, narray, nhash);
-}
-
-
-static void setarrayvector (lua_State *L, Table *t, int size)
-{
- int i;
- luaM_reallocvector(L, t->array, t->sizearray, size, TObject);
- for (i=t->sizearray; i<size; i++)
- setnilvalue(&t->array[i]);
- t->sizearray = size;
-}
-
-
-static void setnodevector (lua_State *L, Table *t, int lsize)
-{
- int i;
- int size = twoto(lsize);
- if (lsize > MAXBITS)
- luaG_runerror(L, "table overflow");
- if (lsize == 0) { /* no elements to hash part? */
- t->node = G(L)->dummynode; /* use common `dummynode' */
- lua_assert(ttisnil(gkey(t->node))); /* assert invariants: */
- lua_assert(ttisnil(gval(t->node)));
- lua_assert(t->node->next == NULL); /* (`dummynode' must be empty) */
- }
- else {
- t->node = luaM_newvector(L, size, Node);
- for (i=0; i<size; i++) {
- t->node[i].next = NULL;
- setnilvalue(gkey(gnode(t, i)));
- setnilvalue(gval(gnode(t, i)));
- }
- }
- t->lsizenode = cast(lu_byte, lsize);
- t->firstfree = gnode(t, size-1); /* first free position to be used */
-}
-
-
-static void resize (lua_State *L, Table *t, int nasize, int nhsize)
-{
- int i;
- int oldasize = t->sizearray;
- int oldhsize = t->lsizenode;
- Node *nold;
- Node temp[1];
- if (oldhsize)
- nold = t->node; /* save old hash ... */
- else { /* old hash is `dummynode' */
- lua_assert(t->node == G(L)->dummynode);
- temp[0] = t->node[0]; /* copy it to `temp' */
- nold = temp;
- setnilvalue(gkey(G(L)->dummynode)); /* restate invariant */
- setnilvalue(gval(G(L)->dummynode));
- lua_assert(G(L)->dummynode->next == NULL);
- }
- if (nasize > oldasize) /* array part must grow? */
- setarrayvector(L, t, nasize);
- /* create new hash part with appropriate size */
- setnodevector(L, t, nhsize);
- /* re-insert elements */
- if (nasize < oldasize) { /* array part must shrink? */
- t->sizearray = nasize;
- /* re-insert elements from vanishing slice */
- for (i=nasize; i<oldasize; i++) {
- if (!ttisnil(&t->array[i]))
- setobjt2t(luaH_setnum(L, t, i+1), &t->array[i]);
- }
- /* shrink array */
- luaM_reallocvector(L, t->array, oldasize, nasize, TObject);
- }
- /* re-insert elements in hash part */
- for (i = twoto(oldhsize) - 1; i >= 0; i--) {
- Node *old = nold+i;
- if (!ttisnil(gval(old)))
- setobjt2t(luaH_set(L, t, gkey(old)), gval(old));
- }
- if (oldhsize)
- luaM_freearray(L, nold, twoto(oldhsize), Node); /* free old array */
-}
-
-
-static void rehash (lua_State *L, Table *t)
-{
- int nasize, nhsize;
- numuse(t, &nasize, &nhsize); /* compute new sizes for array and hash parts */
- resize(L, t, nasize, luaO_log2(nhsize)+1);
-}
-
-
-
-/*
-** }=============================================================
-*/
-
-
-Table *luaH_new (lua_State *L, int narray, int lnhash) {
- Table *t = luaM_new(L, Table);
- luaC_link(L, valtogco(t), LUA_TTABLE);
- t->metatable = hvalue(defaultmeta(L));
- t->flags = cast(lu_byte, ~0);
- /* temporary values (kept only if some malloc fails) */
- t->array = NULL;
- t->sizearray = 0;
- t->lsizenode = 0;
- t->node = NULL;
- setarrayvector(L, t, narray);
- setnodevector(L, t, lnhash);
- return t;
-}
-
-
-void luaH_free (lua_State *L, Table *t) {
- if (t->lsizenode)
- luaM_freearray(L, t->node, sizenode(t), Node);
- luaM_freearray(L, t->array, t->sizearray, TObject);
- luaM_freelem(L, t);
-}
-
-
-#if 0
-/*
-** try to remove an element from a hash table; cannot move any element
-** (because gc can call `remove' during a table traversal)
-*/
-void luaH_remove (Table *t, Node *e) {
- Node *mp = luaH_mainposition(t, gkey(e));
- if (e != mp) { /* element not in its main position? */
- while (mp->next != e) mp = mp->next; /* find previous */
- mp->next = e->next; /* remove `e' from its list */
- }
- else {
- if (e->next != NULL) ??
- }
- lua_assert(ttisnil(gval(node)));
- setnilvalue(gkey(e)); /* clear node `e' */
- e->next = NULL;
-}
-#endif
-
-
-/*
-** inserts a new key into a hash table; first, check whether key's main
-** position is free. If not, check whether colliding node is in its main
-** position or not: if it is not, move colliding node to an empty place and
-** put new key in its main position; otherwise (colliding node is in its main
-** position), new key goes to an empty position.
-*/
-static TObject *newkey (lua_State *L, Table *t, const TObject *key)
-{
- TObject *val;
- Node *mp = luaH_mainposition(t, key);
- if (!ttisnil(gval(mp))) { /* main position is not free? */
- Node *othern = luaH_mainposition(t, gkey(mp)); /* `mp' of colliding node */
- Node *n = t->firstfree; /* get a free place */
- if (othern != mp) { /* is colliding node out of its main position? */
- /* yes; move colliding node into free position */
- while (othern->next != mp) othern = othern->next; /* find previous */
- othern->next = n; /* redo the chain with `n' in place of `mp' */
- *n = *mp; /* copy colliding node into free pos. (mp->next also goes) */
- mp->next = NULL; /* now `mp' is free */
- setnilvalue(gval(mp));
- }
- else { /* colliding node is in its own main position */
- /* new node will go into free position */
- n->next = mp->next; /* chain new position */
- mp->next = n;
- mp = n;
- }
- }
- setobj2t(gkey(mp), key); /* write barrier */
- lua_assert(ttisnil(gval(mp)));
- for (;;) { /* correct `firstfree' */
- if (ttisnil(gkey(t->firstfree)))
- return gval(mp); /* OK; table still has a free place */
- else if (t->firstfree == t->node) break; /* cannot decrement from here */
- else (t->firstfree)--;
- }
- /* no more free places; must create one */
- setbvalue(gval(mp), 0); /* avoid new key being removed */
- rehash(L, t); /* grow table */
- val = cast(TObject *, luaH_get(t, key)); /* get new position */
- lua_assert(ttisboolean(val));
- setnilvalue(val);
- return val;
-}
-
-
-/*
-** generic search function
-*/
-static const TObject *luaH_getany (Table *t, const TObject *key)
-{
- if (ttisnil(key)) return &luaO_nilobject;
- else {
- Node *n = luaH_mainposition(t, key);
- do { /* check whether `key' is somewhere in the chain */
- if (luaO_rawequalObj(gkey(n), key)) return gval(n); /* that's it */
- else n = n->next;
- } while (n);
- return &luaO_nilobject;
- }
-}
-
-
-/*
-** search function for integers
-*/
-const TObject *luaH_getnum (Table *t, int key) {
- if (1 <= key && key <= t->sizearray)
- return &t->array[key-1];
- else {
- lua_Number nk = cast(lua_Number, key);
- Node *n = hashnum(t, nk);
- do { /* check whether `key' is somewhere in the chain */
- if (ttisnumber(gkey(n)) && nvalue(gkey(n)) == nk)
- return gval(n); /* that's it */
- else n = n->next;
- } while (n);
- return &luaO_nilobject;
- }
-}
-
-
-/*
-** search function for strings
-*/
-const TObject *luaH_getstr (Table *t, TString *key) {
- Node *n = hashstr(t, key);
- do { /* check whether `key' is somewhere in the chain */
- if (ttisstring(gkey(n)) && tsvalue(gkey(n)) == key)
- return gval(n); /* that's it */
- else n = n->next;
- } while (n);
- return &luaO_nilobject;
-}
-
-
-/*
-** main search function
-*/
-const TObject *luaH_get (Table *t, const TObject *key) {
- switch (ttype(key)) {
- case LUA_TSTRING: return luaH_getstr(t, tsvalue(key));
- case LUA_TNUMBER: {
- int k;
- lua_number2int(k, (nvalue(key)));
- if (cast(lua_Number, k) == nvalue(key)) /* is an integer index? */
- return luaH_getnum(t, k); /* use specialized version */
- /* else go through */
- }
- default: return luaH_getany(t, key);
- }
-}
-
-
-TObject *luaH_set (lua_State *L, Table *t, const TObject *key) {
- const TObject *p = luaH_get(t, key);
- t->flags = 0;
- if (p != &luaO_nilobject)
- return cast(TObject *, p);
- else {
- if (ttisnil(key)) luaG_runerror(L, "table index is nil");
- else if (ttisnumber(key) && nvalue(key) != nvalue(key))
- luaG_runerror(L, "table index is NaN");
- return newkey(L, t, key);
- }
-}
-
-
-TObject *luaH_setnum (lua_State *L, Table *t, int key) {
- const TObject *p = luaH_getnum(t, key);
- if (p != &luaO_nilobject)
- return cast(TObject *, p);
- else {
- TObject k;
- setnvalue(&k, cast(lua_Number, key));
- return newkey(L, t, &k);
- }
-}
-
+++ /dev/null
-/*
-** $Id: ltable.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Lua tables (hash)
-** See Copyright Notice in lua.h
-*/
-
-#ifndef ltable_h
-#define ltable_h
-
-#include "lobject.h"
-
-
-#define gnode(t,i) (&(t)->node[i])
-#define gkey(n) (&(n)->i_key)
-#define gval(n) (&(n)->i_val)
-
-
-const TObject *luaH_getnum (Table *t, int key);
-TObject *luaH_setnum (lua_State *L, Table *t, int key);
-const TObject *luaH_getstr (Table *t, TString *key);
-const TObject *luaH_get (Table *t, const TObject *key);
-TObject *luaH_set (lua_State *L, Table *t, const TObject *key);
-Table *luaH_new (lua_State *L, int narray, int lnhash);
-void luaH_free (lua_State *L, Table *t);
-int luaH_next (lua_State *L, Table *t, StkId key);
-
-/* exported only for debugging */
-Node *luaH_mainposition (const Table *t, const TObject *key);
-
-
-#endif
+++ /dev/null
-/*
-** $Id: ltests.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Internal Module for Debugging of the Lua Implementation
-** See Copyright Notice in lua.h
-*/
-
-
-#include <ctype.h>
-#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define ltests_c
-
-#include "lua.h"
-
-#include "lapi.h"
-#include "lauxlib.h"
-#include "lcode.h"
-#include "ldebug.h"
-#include "ldo.h"
-#include "lfunc.h"
-#include "lmem.h"
-#include "lopcodes.h"
-#include "lstate.h"
-#include "lstring.h"
-#include "ltable.h"
-#include "lualib.h"
-
-
-
-/*
-** The whole module only makes sense with LUA_DEBUG on
-*/
-#ifdef LUA_DEBUG
-
-
-#define lua_pushintegral(L,i) lua_pushnumber(L, cast(lua_Number, (i)))
-
-
-static lua_State *lua_state = NULL;
-
-int islocked = 0;
-
-
-#define func_at(L,k) (L->ci->base+(k) - 1)
-
-
-static void setnameval (lua_State *L, const char *name, int val)
-{
- lua_pushstring(L, name);
- lua_pushintegral(L, val);
- lua_settable(L, -3);
-}
-
-
-/*
-** {======================================================================
-** Controlled version for realloc.
-** =======================================================================
-*/
-
-#define MARK 0x55 /* 01010101 (a nice pattern) */
-
-#ifndef EXTERNMEMCHECK
-/* full memory check */
-#define HEADER (sizeof(L_Umaxalign)) /* ensures maximum alignment for HEADER */
-#define MARKSIZE 16 /* size of marks after each block */
-#define blockhead(b) (cast(char *, b) - HEADER)
-#define setsize(newblock, size) (*cast(size_t *, newblock) = size)
-#define checkblocksize(b, size) (size == (*cast(size_t *, blockhead(b))))
-#define fillmem(mem,size) memset(mem, -MARK, size)
-#else
-/* external memory check: don't do it twice */
-#define HEADER 0
-#define MARKSIZE 0
-#define blockhead(b) (b)
-#define setsize(newblock, size) /* empty */
-#define checkblocksize(b,size) (1)
-#define fillmem(mem,size) /* empty */
-#endif
-
-unsigned long memdebug_numblocks = 0;
-unsigned long memdebug_total = 0;
-unsigned long memdebug_maxmem = 0;
-unsigned long memdebug_memlimit = ULONG_MAX;
-
-
-static void *checkblock (void *block, size_t size)
-{
- void *b = blockhead(block);
- int i;
- for (i=0;i<MARKSIZE;i++)
- lua_assert(*(cast(char *, b)+HEADER+size+i) == MARK+i); /* corrupted block? */
- return b;
-}
-
-
-static void freeblock (void *block, size_t size)
-{
- if (block) {
- lua_assert(checkblocksize(block, size));
- block = checkblock(block, size);
- fillmem(block, size+HEADER+MARKSIZE); /* erase block */
- free(block); /* free original block */
- memdebug_numblocks--;
- memdebug_total -= size;
- }
-}
-
-
-void *debug_realloc (void *block, size_t oldsize, size_t size) {
- lua_assert(oldsize == 0 || checkblocksize(block, oldsize));
- /* ISO does not specify what realloc(NULL, 0) does */
- lua_assert(block != NULL || size > 0);
- if (size == 0) {
- freeblock(block, oldsize);
- return NULL;
- }
- else if (size > oldsize && memdebug_total+size-oldsize > memdebug_memlimit)
- return NULL; /* to test memory allocation errors */
- else {
- void *newblock;
- int i;
- size_t realsize = HEADER+size+MARKSIZE;
- size_t commonsize = (oldsize < size) ? oldsize : size;
- if (realsize < size) return NULL; /* overflow! */
- newblock = malloc(realsize); /* alloc a new block */
- if (newblock == NULL) return NULL;
- if (block) {
- memcpy(cast(char *, newblock)+HEADER, block, commonsize);
- freeblock(block, oldsize); /* erase (and check) old copy */
- }
- /* initialize new part of the block with something `weird' */
- fillmem(cast(char *, newblock)+HEADER+commonsize, size-commonsize);
- memdebug_total += size;
- if (memdebug_total > memdebug_maxmem)
- memdebug_maxmem = memdebug_total;
- memdebug_numblocks++;
- setsize(newblock, size);
- for (i=0;i<MARKSIZE;i++)
- *(cast(char *, newblock)+HEADER+size+i) = cast(char, MARK+i);
- return cast(char *, newblock)+HEADER;
- }
-}
-
-
-/* }====================================================================== */
-
-
-
-/*
-** {======================================================
-** Disassembler
-** =======================================================
-*/
-
-
-static char *buildop (Proto *p, int pc, char *buff)
-{
- Instruction i = p->code[pc];
- OpCode o = GET_OPCODE(i);
- const char *name = luaP_opnames[o];
- int line = getline(p, pc);
- sprintf(buff, "(%4d) %4d - ", line, pc);
- switch (getOpMode(o)) {
- case iABC:
- sprintf(buff+strlen(buff), "%-12s%4d %4d %4d", name,
- GETARG_A(i), GETARG_B(i), GETARG_C(i));
- break;
- case iABx:
- sprintf(buff+strlen(buff), "%-12s%4d %4d", name, GETARG_A(i), GETARG_Bx(i));
- break;
- case iAsBx:
- sprintf(buff+strlen(buff), "%-12s%4d %4d", name, GETARG_A(i), GETARG_sBx(i));
- break;
- }
- return buff;
-}
-
-
-#if 0
-void luaI_printcode (Proto *pt, int size) {
- int pc;
- for (pc=0; pc<size; pc++) {
- char buff[100];
- printf("%s\n", buildop(pt, pc, buff));
- }
- printf("-------\n");
-}
-#endif
-
-
-static int listcode (lua_State *L)
-{
- int pc;
- Proto *p;
- luaL_argcheck(L, lua_isfunction(L, 1) && !lua_iscfunction(L, 1),
- 1, "Lua function expected");
- p = clvalue(func_at(L, 1))->l.p;
- lua_newtable(L);
- setnameval(L, "maxstack", p->maxstacksize);
- setnameval(L, "numparams", p->numparams);
- for (pc=0; pc<p->sizecode; pc++) {
- char buff[100];
- lua_pushintegral(L, pc+1);
- lua_pushstring(L, buildop(p, pc, buff));
- lua_settable(L, -3);
- }
- return 1;
-}
-
-
-static int listk (lua_State *L)
-{
- Proto *p;
- int i;
- luaL_argcheck(L, lua_isfunction(L, 1) && !lua_iscfunction(L, 1),
- 1, "Lua function expected");
- p = clvalue(func_at(L, 1))->l.p;
- lua_newtable(L);
- for (i=0; i<p->sizek; i++) {
- lua_pushintegral(L, i+1);
- luaA_pushobject(L, p->k+i);
- lua_settable(L, -3);
- }
- return 1;
-}
-
-
-static int listlocals (lua_State *L)
-{
- Proto *p;
- int pc = luaL_checkint(L, 2) - 1;
- int i = 0;
- const char *name;
- luaL_argcheck(L, lua_isfunction(L, 1) && !lua_iscfunction(L, 1),
- 1, "Lua function expected");
- p = clvalue(func_at(L, 1))->l.p;
- while ((name = luaF_getlocalname(p, ++i, pc)) != NULL)
- lua_pushstring(L, name);
- return i-1;
-}
-
-/* }====================================================== */
-
-
-
-
-static int get_limits (lua_State *L)
-{
- lua_newtable(L);
- setnameval(L, "BITS_INT", BITS_INT);
- setnameval(L, "LFPF", LFIELDS_PER_FLUSH);
- setnameval(L, "MAXVARS", MAXVARS);
- setnameval(L, "MAXPARAMS", MAXPARAMS);
- setnameval(L, "MAXSTACK", MAXSTACK);
- setnameval(L, "MAXUPVALUES", MAXUPVALUES);
- return 1;
-}
-
-
-static int mem_query (lua_State *L)
-{
- if (lua_isnone(L, 1)) {
- lua_pushintegral(L, memdebug_total);
- lua_pushintegral(L, memdebug_numblocks);
- lua_pushintegral(L, memdebug_maxmem);
- return 3;
- }
- else {
- memdebug_memlimit = luaL_checkint(L, 1);
- return 0;
- }
-}
-
-
-static int hash_query (lua_State *L)
-{
- if (lua_isnone(L, 2)) {
- luaL_argcheck(L, lua_type(L, 1) == LUA_TSTRING, 1, "string expected");
- lua_pushintegral(L, tsvalue(func_at(L, 1))->tsv.hash);
- }
- else {
- TObject *o = func_at(L, 1);
- Table *t;
- luaL_checktype(L, 2, LUA_TTABLE);
- t = hvalue(func_at(L, 2));
- lua_pushintegral(L, luaH_mainposition(t, o) - t->node);
- }
- return 1;
-}
-
-
-static int stacklevel (lua_State *L)
-{
- unsigned long a = 0;
- lua_pushintegral(L, (int)(L->top - L->stack));
- lua_pushintegral(L, (int)(L->stack_last - L->stack));
- lua_pushintegral(L, (int)(L->ci - L->base_ci));
- lua_pushintegral(L, (int)(L->end_ci - L->base_ci));
- lua_pushintegral(L, (unsigned long)&a);
- return 5;
-}
-
-
-static int table_query (lua_State *L)
-{
- const Table *t;
- int i = luaL_optint(L, 2, -1);
- luaL_checktype(L, 1, LUA_TTABLE);
- t = hvalue(func_at(L, 1));
- if (i == -1) {
- lua_pushintegral(L, t->sizearray);
- lua_pushintegral(L, sizenode(t));
- lua_pushintegral(L, t->firstfree - t->node);
- }
- else if (i < t->sizearray) {
- lua_pushintegral(L, i);
- luaA_pushobject(L, &t->array[i]);
- lua_pushnil(L);
- }
- else if ((i -= t->sizearray) < sizenode(t)) {
- if (!ttisnil(gval(gnode(t, i))) ||
- ttisnil(gkey(gnode(t, i))) ||
- ttisnumber(gkey(gnode(t, i)))) {
- luaA_pushobject(L, gkey(gnode(t, i)));
- }
- else
- lua_pushstring(L, "<undef>");
- luaA_pushobject(L, gval(gnode(t, i)));
- if (t->node[i].next)
- lua_pushintegral(L, t->node[i].next - t->node);
- else
- lua_pushnil(L);
- }
- return 3;
-}
-
-
-static int string_query (lua_State *L)
-{
- stringtable *tb = &G(L)->strt;
- int s = luaL_optint(L, 2, 0) - 1;
- if (s==-1) {
- lua_pushintegral(L ,tb->nuse);
- lua_pushintegral(L ,tb->size);
- return 2;
- }
- else if (s < tb->size) {
- GCObject *ts;
- int n = 0;
- for (ts = tb->hash[s]; ts; ts = ts->gch.next) {
- setsvalue2s(L->top, gcotots(ts));
- incr_top(L);
- n++;
- }
- return n;
- }
- return 0;
-}
-
-
-static int tref (lua_State *L)
-{
- int level = lua_gettop(L);
- int lock = luaL_optint(L, 2, 1);
- luaL_checkany(L, 1);
- lua_pushvalue(L, 1);
- lua_pushintegral(L, lua_ref(L, lock));
- assert(lua_gettop(L) == level+1); /* +1 for result */
- return 1;
-}
-
-static int getref (lua_State *L)
-{
- int level = lua_gettop(L);
- lua_getref(L, luaL_checkint(L, 1));
- assert(lua_gettop(L) == level+1);
- return 1;
-}
-
-static int unref (lua_State *L)
-{
- int level = lua_gettop(L);
- lua_unref(L, luaL_checkint(L, 1));
- assert(lua_gettop(L) == level);
- return 0;
-}
-
-static int metatable (lua_State *L)
-{
- luaL_checkany(L, 1);
- if (lua_isnone(L, 2)) {
- if (lua_getmetatable(L, 1) == 0)
- lua_pushnil(L);
- }
- else {
- lua_settop(L, 2);
- luaL_checktype(L, 2, LUA_TTABLE);
- lua_setmetatable(L, 1);
- }
- return 1;
-}
-
-
-static int upvalue (lua_State *L)
-{
- int n = luaL_checkint(L, 2);
- luaL_checktype(L, 1, LUA_TFUNCTION);
- if (lua_isnone(L, 3)) {
- const char *name = lua_getupvalue(L, 1, n);
- if (name == NULL) return 0;
- lua_pushstring(L, name);
- return 2;
- }
- else {
- const char *name = lua_setupvalue(L, 1, n);
- lua_pushstring(L, name);
- return 1;
- }
-}
-
-
-static int newuserdata (lua_State *L)
-{
- size_t size = luaL_checkint(L, 1);
- char *p = cast(char *, lua_newuserdata(L, size));
- while (size--) *p++ = '\0';
- return 1;
-}
-
-
-static int pushuserdata (lua_State *L)
-{
- lua_pushlightuserdata(L, cast(void *, luaL_checkint(L, 1)));
- return 1;
-}
-
-
-static int udataval (lua_State *L)
-{
- lua_pushintegral(L, cast(int, lua_touserdata(L, 1)));
- return 1;
-}
-
-
-static int doonnewstack (lua_State *L)
-{
- lua_State *L1 = lua_newthread(L);
- size_t l;
- const char *s = luaL_checklstring(L, 1, &l);
- int status = luaL_loadbuffer(L1, s, l, s);
- if (status == 0)
- status = lua_pcall(L1, 0, 0, 0);
- lua_pushintegral(L, status);
- return 1;
-}
-
-
-static int s2d (lua_State *L)
-{
- lua_pushnumber(L, *cast(const double *, luaL_checkstring(L, 1)));
- return 1;
-}
-
-static int d2s (lua_State *L)
-{
- double d = luaL_checknumber(L, 1);
- lua_pushlstring(L, cast(char *, &d), sizeof(d));
- return 1;
-}
-
-
-static int newstate (lua_State *L)
-{
- lua_State *L1 = lua_open();
- if (L1) {
- lua_userstateopen(L1); /* init lock */
- lua_pushintegral(L, (unsigned long)L1);
- }
- else
- lua_pushnil(L);
- return 1;
-}
-
-
-static int loadlib (lua_State *L)
-{
- static const luaL_reg libs[] = {
- {"mathlibopen", luaopen_math},
- {"strlibopen", luaopen_string},
- {"iolibopen", luaopen_io},
- {"tablibopen", luaopen_table},
- {"dblibopen", luaopen_debug},
- {"baselibopen", luaopen_base},
- {NULL, NULL}
- };
- lua_State *L1 = cast(lua_State *,
- cast(unsigned long, luaL_checknumber(L, 1)));
- lua_pushvalue(L1, LUA_GLOBALSINDEX);
- luaL_openlib(L1, NULL, libs, 0);
- return 0;
-}
-
-static int closestate (lua_State *L)
-{
- lua_State *L1 = cast(lua_State *, cast(unsigned long, luaL_checknumber(L, 1)));
- lua_close(L1);
- lua_unlock(L); /* close cannot unlock that */
- return 0;
-}
-
-static int doremote (lua_State *L)
-{
- lua_State *L1 = cast(lua_State *,cast(unsigned long,luaL_checknumber(L, 1)));
- size_t lcode;
- const char *code = luaL_checklstring(L, 2, &lcode);
- int status;
- lua_settop(L1, 0);
- status = luaL_loadbuffer(L1, code, lcode, code);
- if (status == 0)
- status = lua_pcall(L1, 0, LUA_MULTRET, 0);
- if (status != 0) {
- lua_pushnil(L);
- lua_pushintegral(L, status);
- lua_pushstring(L, lua_tostring(L1, -1));
- return 3;
- }
- else {
- int i = 0;
- while (!lua_isnone(L1, ++i))
- lua_pushstring(L, lua_tostring(L1, i));
- lua_pop(L1, i-1);
- return i-1;
- }
-}
-
-
-static int log2_aux (lua_State *L)
-{
- lua_pushintegral(L, luaO_log2(luaL_checkint(L, 1)));
- return 1;
-}
-
-static int int2fb_aux (lua_State *L)
-{
- int b = luaO_int2fb(luaL_checkint(L, 1));
- lua_pushintegral(L, b);
- lua_pushintegral(L, fb2int(b));
- return 2;
-}
-
-
-static int test_do (lua_State *L)
-{
- const char *p = luaL_checkstring(L, 1);
- if (*p == '@')
- lua_dofile(L, p+1);
- else
- lua_dostring(L, p);
- return lua_gettop(L);
-}
-
-
-
-/*
-** {======================================================
-** function to test the API with C. It interprets a kind of assembler
-** language with calls to the API, so the test can be driven by Lua code
-** =======================================================
-*/
-
-static const char *const delimits = " \t\n,;";
-
-static void skip (const char **pc)
-{
- while (**pc != '\0' && strchr(delimits, **pc)) (*pc)++;
-}
-
-static int getnum_aux (lua_State *L, const char **pc)
-{
- int res = 0;
- int sig = 1;
- skip(pc);
- if (**pc == '.') {
- res = cast(int, lua_tonumber(L, -1));
- lua_pop(L, 1);
- (*pc)++;
- return res;
- }
- else if (**pc == '-') {
- sig = -1;
- (*pc)++;
- }
- while (isdigit(cast(int, **pc))) res = res*10 + (*(*pc)++) - '0';
- return sig*res;
-}
-
-static const char *getname_aux (char *buff, const char **pc)
-{
- int i = 0;
- skip(pc);
- while (**pc != '\0' && !strchr(delimits, **pc))
- buff[i++] = *(*pc)++;
- buff[i] = '\0';
- return buff;
-}
-
-
-#define EQ(s1) (strcmp(s1, inst) == 0)
-
-#define getnum (getnum_aux(L, &pc))
-#define getname (getname_aux(buff, &pc))
-
-
-static int testC (lua_State *L)
-{
- char buff[30];
- const char *pc = luaL_checkstring(L, 1);
- for (;;) {
- const char *inst = getname;
- if EQ("") return 0;
- else if EQ("isnumber") {
- lua_pushintegral(L, lua_isnumber(L, getnum));
- }
- else if EQ("isstring") {
- lua_pushintegral(L, lua_isstring(L, getnum));
- }
- else if EQ("istable") {
- lua_pushintegral(L, lua_istable(L, getnum));
- }
- else if EQ("iscfunction") {
- lua_pushintegral(L, lua_iscfunction(L, getnum));
- }
- else if EQ("isfunction") {
- lua_pushintegral(L, lua_isfunction(L, getnum));
- }
- else if EQ("isuserdata") {
- lua_pushintegral(L, lua_isuserdata(L, getnum));
- }
- else if EQ("isudataval") {
- lua_pushintegral(L, lua_islightuserdata(L, getnum));
- }
- else if EQ("isnil") {
- lua_pushintegral(L, lua_isnil(L, getnum));
- }
- else if EQ("isnull") {
- lua_pushintegral(L, lua_isnone(L, getnum));
- }
- else if EQ("tonumber") {
- lua_pushnumber(L, lua_tonumber(L, getnum));
- }
- else if EQ("tostring") {
- const char *s = lua_tostring(L, getnum);
- lua_pushstring(L, s);
- }
- else if EQ("strlen") {
- lua_pushintegral(L, lua_strlen(L, getnum));
- }
- else if EQ("tocfunction") {
- lua_pushcfunction(L, lua_tocfunction(L, getnum));
- }
- else if EQ("return") {
- return getnum;
- }
- else if EQ("gettop") {
- lua_pushintegral(L, lua_gettop(L));
- }
- else if EQ("settop") {
- lua_settop(L, getnum);
- }
- else if EQ("pop") {
- lua_pop(L, getnum);
- }
- else if EQ("pushnum") {
- lua_pushintegral(L, getnum);
- }
- else if EQ("pushnil") {
- lua_pushnil(L);
- }
- else if EQ("pushbool") {
- lua_pushboolean(L, getnum);
- }
- else if EQ("tobool") {
- lua_pushintegral(L, lua_toboolean(L, getnum));
- }
- else if EQ("pushvalue") {
- lua_pushvalue(L, getnum);
- }
- else if EQ("pushcclosure") {
- lua_pushcclosure(L, testC, getnum);
- }
- else if EQ("pushupvalues") {
- lua_pushupvalues(L);
- }
- else if EQ("remove") {
- lua_remove(L, getnum);
- }
- else if EQ("insert") {
- lua_insert(L, getnum);
- }
- else if EQ("replace") {
- lua_replace(L, getnum);
- }
- else if EQ("gettable") {
- lua_gettable(L, getnum);
- }
- else if EQ("settable") {
- lua_settable(L, getnum);
- }
- else if EQ("next") {
- lua_next(L, -2);
- }
- else if EQ("concat") {
- lua_concat(L, getnum);
- }
- else if EQ("lessthan") {
- int a = getnum;
- lua_pushboolean(L, lua_lessthan(L, a, getnum));
- }
- else if EQ("equal") {
- int a = getnum;
- lua_pushboolean(L, lua_equal(L, a, getnum));
- }
- else if EQ("rawcall") {
- int narg = getnum;
- int nres = getnum;
- lua_call(L, narg, nres);
- }
- else if EQ("call") {
- int narg = getnum;
- int nres = getnum;
- lua_pcall(L, narg, nres, 0);
- }
- else if EQ("loadstring") {
- size_t sl;
- const char *s = luaL_checklstring(L, getnum, &sl);
- luaL_loadbuffer(L, s, sl, s);
- }
- else if EQ("loadfile") {
- luaL_loadfile(L, luaL_checkstring(L, getnum));
- }
- else if EQ("setmetatable") {
- lua_setmetatable(L, getnum);
- }
- else if EQ("getmetatable") {
- if (lua_getmetatable(L, getnum) == 0)
- lua_pushnil(L);
- }
- else if EQ("type") {
- lua_pushstring(L, lua_typename(L, lua_type(L, getnum)));
- }
- else if EQ("getn") {
- int i = getnum;
- lua_pushintegral(L, luaL_getn(L, i));
- }
- else if EQ("setn") {
- int i = getnum;
- int n = cast(int, lua_tonumber(L, -1));
- luaL_setn(L, i, n);
- lua_pop(L, 1);
- }
- else luaL_error(L, "unknown instruction %s", buff);
- }
- return 0;
-}
-
-/* }====================================================== */
-
-
-/*
-** {======================================================
-** tests for yield inside hooks
-** =======================================================
-*/
-
-static void yieldf (lua_State *L, lua_Debug *ar)
-{
- lua_yield(L, 0);
-}
-
-static int setyhook (lua_State *L)
-{
- if (lua_isnoneornil(L, 1))
- lua_sethook(L, NULL, 0, 0); /* turn off hooks */
- else {
- const char *smask = luaL_checkstring(L, 1);
- int count = luaL_optint(L, 2, 0);
- int mask = 0;
- if (strchr(smask, 'l')) mask |= LUA_MASKLINE;
- if (count > 0) mask |= LUA_MASKCOUNT;
- lua_sethook(L, yieldf, mask, count);
- }
- return 0;
-}
-
-
-static int coresume (lua_State *L)
-{
- int status;
- lua_State *co = lua_tothread(L, 1);
- luaL_argcheck(L, co, 1, "coroutine expected");
- status = lua_resume(co, 0);
- if (status != 0) {
- lua_pushboolean(L, 0);
- lua_insert(L, -2);
- return 2; /* return false + error message */
- }
- else {
- lua_pushboolean(L, 1);
- return 1;
- }
-}
-
-/* }====================================================== */
-
-
-
-static const struct luaL_reg tests_funcs[] = {
- {"hash", hash_query},
- {"limits", get_limits},
- {"listcode", listcode},
- {"listk", listk},
- {"listlocals", listlocals},
- {"loadlib", loadlib},
- {"stacklevel", stacklevel},
- {"querystr", string_query},
- {"querytab", table_query},
- {"doit", test_do},
- {"testC", testC},
- {"ref", tref},
- {"getref", getref},
- {"unref", unref},
- {"d2s", d2s},
- {"s2d", s2d},
- {"metatable", metatable},
- {"upvalue", upvalue},
- {"newuserdata", newuserdata},
- {"pushuserdata", pushuserdata},
- {"udataval", udataval},
- {"doonnewstack", doonnewstack},
- {"newstate", newstate},
- {"closestate", closestate},
- {"doremote", doremote},
- {"log2", log2_aux},
- {"int2fb", int2fb_aux},
- {"totalmem", mem_query},
- {"resume", coresume},
- {"setyhook", setyhook},
- {NULL, NULL}
-};
-
-
-static void fim (void)
-{
- if (!islocked)
- lua_close(lua_state);
- lua_assert(memdebug_numblocks == 0);
- lua_assert(memdebug_total == 0);
-}
-
-
-static int l_panic (lua_State *L)
-{
- UNUSED(L);
- fprintf(stderr, "unable to recover; exiting\n");
- return 0;
-}
-
-
-int luaB_opentests (lua_State *L) {
- lua_atpanic(L, l_panic);
- lua_userstateopen(L); /* init lock */
- lua_state = L; /* keep first state to be opened */
- luaL_openlib(L, "T", tests_funcs, 0);
- atexit(fim);
- return 0;
-}
-
-
-#undef main
-int main (int argc, char *argv[]) {
- char *limit = getenv("MEMLIMIT");
- if (limit)
- memdebug_memlimit = strtoul(limit, NULL, 10);
- l_main(argc, argv);
- return 0;
-}
-
-#endif
+++ /dev/null
-/*
-** $Id: ltm.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Tag methods
-** See Copyright Notice in lua.h
-*/
-
-
-#include <string.h>
-
-#define ltm_c
-
-#include "lua.h"
-
-#include "lobject.h"
-#include "lstate.h"
-#include "lstring.h"
-#include "ltable.h"
-#include "ltm.h"
-
-
-
-const char *const luaT_typenames[] = {
- "nil", "boolean", "userdata", "number",
- "string", "table", "function", "userdata", "thread"
-};
-
-
-void luaT_init (lua_State *L) {
- static const char *const luaT_eventname[] = { /* ORDER TM */
- "__index", "__newindex",
- "__gc", "__mode", "__eq",
- "__add", "__sub", "__mul", "__div",
- "__pow", "__unm", "__lt", "__le",
- "__concat", "__call"
- };
- int i;
- for (i=0; i<TM_N; i++) {
- G(L)->tmname[i] = luaS_new(L, luaT_eventname[i]);
- luaS_fix(G(L)->tmname[i]); /* never collect these names */
- }
-}
-
-
-/*
-** function to be used with macro "fasttm": optimized for absence of
-** tag methods
-*/
-const TObject *luaT_gettm (Table *events, TMS event, TString *ename) {
- const TObject *tm = luaH_getstr(events, ename);
- lua_assert(event <= TM_EQ);
- if (ttisnil(tm)) { /* no tag method? */
- events->flags |= cast(lu_byte, 1u<<event); /* cache this fact */
- return NULL;
- }
- else return tm;
-}
-
-
-const TObject *luaT_gettmbyobj (lua_State *L, const TObject *o, TMS event)
-{
- TString *ename = G(L)->tmname[event];
- switch (ttype(o)) {
- case LUA_TTABLE:
- return luaH_getstr(hvalue(o)->metatable, ename);
- case LUA_TUSERDATA:
- return luaH_getstr(uvalue(o)->uv.metatable, ename);
- default:
- return &luaO_nilobject;
- }
-}
-
+++ /dev/null
-/*
-** $Id: ltm.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Tag methods
-** See Copyright Notice in lua.h
-*/
-
-#ifndef ltm_h
-#define ltm_h
-
-
-#include "lobject.h"
-
-
-/*
-* WARNING: if you change the order of this enumeration,
-* grep "ORDER TM"
-*/
-typedef enum {
- TM_INDEX,
- TM_NEWINDEX,
- TM_GC,
- TM_MODE,
- TM_EQ, /* last tag method with `fast' access */
- TM_ADD,
- TM_SUB,
- TM_MUL,
- TM_DIV,
- TM_POW,
- TM_UNM,
- TM_LT,
- TM_LE,
- TM_CONCAT,
- TM_CALL,
- TM_N /* number of elements in the enum */
-} TMS;
-
-
-
-#define gfasttm(g,et,e) \
- (((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, (g)->tmname[e]))
-
-#define fasttm(l,et,e) gfasttm(G(l), et, e)
-
-
-const TObject *luaT_gettm (Table *events, TMS event, TString *ename);
-const TObject *luaT_gettmbyobj (lua_State *L, const TObject *o, TMS event);
-void luaT_init (lua_State *L);
-
-extern const char *const luaT_typenames[];
-
-#endif
+++ /dev/null
-/*
-** $Id: lua.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Lua stand-alone interpreter
-** See Copyright Notice in lua.h
-*/
-
-
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define lua_c
-
-#include "lua.h"
-
-#include "lauxlib.h"
-#include "lualib.h"
-
-
-/*
-** generic extra include file
-*/
-#ifdef LUA_USERCONFIG
-#include LUA_USERCONFIG
-#endif
-
-
-/*
-** definition of `isatty'
-*/
-#ifdef _POSIX_C_SOURCE
-#include <unistd.h>
-#define stdin_is_tty() isatty(0)
-#else
-#define stdin_is_tty() 1 /* assume stdin is a tty */
-#endif
-
-
-
-#ifndef PROMPT
-#define PROMPT "> "
-#endif
-
-
-#ifndef PROMPT2
-#define PROMPT2 ">> "
-#endif
-
-#ifndef PROGNAME
-#define PROGNAME "lua"
-#endif
-
-#ifndef lua_userinit
-#define lua_userinit(L) openstdlibs(L)
-#endif
-
-
-#ifndef LUA_EXTRALIBS
-#define LUA_EXTRALIBS /* empty */
-#endif
-
-
-static lua_State *L = NULL;
-
-static const char *progname = PROGNAME;
-
-
-
-static const luaL_reg lualibs[] = {
- {"base", luaopen_base},
- {"table", luaopen_table},
- {"io", luaopen_io},
- {"string", luaopen_string},
- {"math", luaopen_math},
- {"debug", luaopen_debug},
- {"loadlib", luaopen_loadlib},
- /* add your libraries here */
- LUA_EXTRALIBS
- {NULL, NULL}
-};
-
-
-
-static void lstop (lua_State *l, lua_Debug *ar)
-{
- (void)ar; /* unused arg. */
- lua_sethook(l, NULL, 0, 0);
- luaL_error(l, "interrupted!");
-}
-
-
-static void laction (int i)
-{
- signal(i, SIG_DFL); /* if another SIGINT happens before lstop,
- terminate process (default action) */
- lua_sethook(L, lstop, LUA_MASKCALL | LUA_MASKRET | LUA_MASKCOUNT, 1);
-}
-
-
-static void print_usage (void)
-{
- fprintf(stderr,
- "usage: %s [options] [script [args]].\n"
- "Available options are:\n"
- " - execute stdin as a file\n"
- " -e stat execute string `stat'\n"
- " -i enter interactive mode after executing `script'\n"
- " -l name load and run library `name'\n"
- " -v show version information\n"
- " -- stop handling options\n" ,
- progname);
-}
-
-
-static void l_message (const char *pname, const char *msg)
-{
- if (pname) fprintf(stderr, "%s: ", pname);
- fprintf(stderr, "%s\n", msg);
-}
-
-
-static int report (int status)
-{
- const char *msg;
- if (status) {
- msg = lua_tostring(L, -1);
- if (msg == NULL) msg = "(error with no message)";
- l_message(progname, msg);
- lua_pop(L, 1);
- }
- return status;
-}
-
-
-static int lcall (int narg, int clear)
-{
- int status;
- int base = lua_gettop(L) - narg; /* function index */
- lua_pushliteral(L, "_TRACEBACK");
- lua_rawget(L, LUA_GLOBALSINDEX); /* get traceback function */
- lua_insert(L, base); /* put it under chunk and args */
- signal(SIGINT, laction);
- status = lua_pcall(L, narg, (clear ? 0 : LUA_MULTRET), base);
- signal(SIGINT, SIG_DFL);
- lua_remove(L, base); /* remove traceback function */
- return status;
-}
-
-
-static void print_version (void)
-{
- l_message(NULL, LUA_VERSION " " LUA_COPYRIGHT);
-}
-
-
-static void getargs (char *argv[], int n)
-{
- int i;
- lua_newtable(L);
- for (i=0; argv[i]; i++) {
- lua_pushnumber(L, i - n);
- lua_pushstring(L, argv[i]);
- lua_rawset(L, -3);
- }
- /* arg.n = maximum index in table `arg' */
- lua_pushliteral(L, "n");
- lua_pushnumber(L, i-n-1);
- lua_rawset(L, -3);
-}
-
-
-static int docall (int status)
-{
- if (status == 0) status = lcall(0, 1);
- return report(status);
-}
-
-
-static int file_input (const char *name)
-{
- return docall(luaL_loadfile(L, name));
-}
-
-
-static int dostring (const char *s, const char *name)
-{
- return docall(luaL_loadbuffer(L, s, strlen(s), name));
-}
-
-
-static int load_file (const char *name)
-{
- lua_pushliteral(L, "require");
- lua_rawget(L, LUA_GLOBALSINDEX);
- if (!lua_isfunction(L, -1)) { /* no `require' defined? */
- lua_pop(L, 1);
- return file_input(name);
- }
- else {
- lua_pushstring(L, name);
- return report(lcall(1, 1));
- }
-}
-
-
-/*
-** this macro can be used by some `history' system to save lines
-** read in manual input
-*/
-#ifndef lua_saveline
-#define lua_saveline(L,line) /* empty */
-#endif
-
-
-/*
-** this macro defines a function to show the prompt and reads the
-** next line for manual input
-*/
-#ifndef lua_readline
-#define lua_readline(L,prompt) readline(L,prompt)
-
-/* maximum length of an input line */
-#ifndef MAXINPUT
-#define MAXINPUT 512
-#endif
-
-
-static int readline (lua_State *l, const char *prompt)
-{
- static char buffer[MAXINPUT];
- if (prompt) {
- fputs(prompt, stdout);
- fflush(stdout);
- }
- if (fgets(buffer, sizeof(buffer), stdin) == NULL)
- return 0; /* read fails */
- else {
- lua_pushstring(l, buffer);
- return 1;
- }
-}
-
-#endif
-
-
-static const char *get_prompt (int firstline)
-{
- const char *p = NULL;
- lua_pushstring(L, firstline ? "_PROMPT" : "_PROMPT2");
- lua_rawget(L, LUA_GLOBALSINDEX);
- p = lua_tostring(L, -1);
- if (p == NULL) p = (firstline ? PROMPT : PROMPT2);
- lua_pop(L, 1); /* remove global */
- return p;
-}
-
-
-static int incomplete (int status)
-{
- if (status == LUA_ERRSYNTAX &&
- strstr(lua_tostring(L, -1), "near `<eof>'") != NULL) {
- lua_pop(L, 1);
- return 1;
- }
- else
- return 0;
-}
-
-
-static int load_string (void)
-{
- int status;
- lua_settop(L, 0);
- if (lua_readline(L, get_prompt(1)) == 0) /* no input? */
- return -1;
- if (lua_tostring(L, -1)[0] == '=') { /* line starts with `=' ? */
- lua_pushfstring(L, "return %s", lua_tostring(L, -1)+1);/* `=' -> `return' */
- lua_remove(L, -2); /* remove original line */
- }
- for (;;) { /* repeat until gets a complete line */
- status = luaL_loadbuffer(L, lua_tostring(L, 1), lua_strlen(L, 1), "=stdin");
- if (!incomplete(status)) break; /* cannot try to add lines? */
- if (lua_readline(L, get_prompt(0)) == 0) /* no more input? */
- return -1;
- lua_concat(L, lua_gettop(L)); /* join lines */
- }
- lua_saveline(L, lua_tostring(L, 1));
- lua_remove(L, 1); /* remove line */
- return status;
-}
-
-
-static void manual_input (void)
-{
- int status;
- const char *oldprogname = progname;
- progname = NULL;
- while ((status = load_string()) != -1) {
- if (status == 0) status = lcall(0, 0);
- report(status);
- if (status == 0 && lua_gettop(L) > 0) { /* any result to print? */
- lua_getglobal(L, "print");
- lua_insert(L, 1);
- if (lua_pcall(L, lua_gettop(L)-1, 0, 0) != 0)
- l_message(progname, lua_pushfstring(L, "error calling `print' (%s)",
- lua_tostring(L, -1)));
- }
- }
- lua_settop(L, 0); /* clear stack */
- fputs("\n", stdout);
- progname = oldprogname;
-}
-
-
-static int handle_argv (char *argv[], int *interactive)
-{
- if (argv[1] == NULL) { /* no more arguments? */
- if (stdin_is_tty()) {
- print_version();
- manual_input();
- }
- else
- file_input(NULL); /* executes stdin as a file */
- }
- else { /* other arguments; loop over them */
- int i;
- for (i = 1; argv[i] != NULL; i++) {
- if (argv[i][0] != '-') break; /* not an option? */
- switch (argv[i][1]) { /* option */
- case '-': { /* `--' */
- if (argv[i][2] != '\0') {
- print_usage();
- return 1;
- }
- i++; /* skip this argument */
- goto endloop; /* stop handling arguments */
- }
- case '\0': {
- file_input(NULL); /* executes stdin as a file */
- break;
- }
- case 'i': {
- *interactive = 1;
- break;
- }
- case 'v': {
- print_version();
- break;
- }
- case 'e': {
- const char *chunk = argv[i] + 2;
- if (*chunk == '\0') chunk = argv[++i];
- if (chunk == NULL) {
- print_usage();
- return 1;
- }
- if (dostring(chunk, "=<command line>") != 0)
- return 1;
- break;
- }
- case 'l': {
- const char *filename = argv[i] + 2;
- if (*filename == '\0') filename = argv[++i];
- if (filename == NULL) {
- print_usage();
- return 1;
- }
- if (load_file(filename))
- return 1; /* stop if file fails */
- break;
- }
- case 'c': {
- l_message(progname, "option `-c' is deprecated");
- break;
- }
- case 's': {
- l_message(progname, "option `-s' is deprecated");
- break;
- }
- default: {
- print_usage();
- return 1;
- }
- }
- } endloop:
- if (argv[i] != NULL) {
- const char *filename = argv[i];
- getargs(argv, i); /* collect arguments */
- lua_setglobal(L, "arg");
- return file_input(filename); /* stop scanning arguments */
- }
- }
- return 0;
-}
-
-
-static void openstdlibs (lua_State *l)
-{
- const luaL_reg *lib = lualibs;
- for (; lib->func; lib++) {
- lib->func(l); /* open library */
- lua_settop(l, 0); /* discard any results */
- }
-}
-
-
-static int handle_luainit (void)
-{
- const char *init = getenv("LUA_INIT");
- if (init == NULL) return 0; /* status OK */
- else if (init[0] == '@')
- return file_input(init+1);
- else
- return dostring(init, "=LUA_INIT");
-}
-
-
-struct Smain {
- int argc;
- char **argv;
- int status;
-};
-
-
-static int pmain (lua_State *l)
-{
- struct Smain *s = (struct Smain *)lua_touserdata(l, 1);
- int status;
- int interactive = 0;
- if (s->argv[0] && s->argv[0][0]) progname = s->argv[0];
- L = l;
- lua_userinit(l); /* open libraries */
- status = handle_luainit();
- if (status == 0) {
- status = handle_argv(s->argv, &interactive);
- if (status == 0 && interactive) manual_input();
- }
- s->status = status;
- return 0;
-}
-
-
-int main (int argc, char *argv[])
-{
- int status;
- struct Smain s;
- lua_State *l = lua_open(); /* create state */
- if (l == NULL) {
- l_message(argv[0], "cannot create state: not enough memory");
- return EXIT_FAILURE;
- }
- s.argc = argc;
- s.argv = argv;
- status = lua_cpcall(l, &pmain, &s);
- report(status);
- lua_close(l);
- return (status || s.status) ? EXIT_FAILURE : EXIT_SUCCESS;
-}
-
+++ /dev/null
-/*
-** $Id: luac.c,v 1.2 2004/03/19 21:14:32 niemeyer Exp $
-** Lua compiler (saves bytecodes to files; also list bytecodes)
-** See Copyright Notice in lua.h
-*/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "lua.h"
-#include "lauxlib.h"
-
-#include "lfunc.h"
-#include "lmem.h"
-#include "lobject.h"
-#include "lopcodes.h"
-#include "lstring.h"
-#include "lundump.h"
-
-#ifndef LUA_DEBUG
-#define luaB_opentests(L)
-#endif
-
-#ifndef PROGNAME
-#define PROGNAME "luac" /* program name */
-#endif
-
-#define OUTPUT "luac.out" /* default output file */
-
-static int listing=0; /* list bytecodes? */
-static int dumping=1; /* dump bytecodes? */
-static int stripping=0; /* strip debug information? */
-static char Output[]={ OUTPUT }; /* default output file name */
-static const char* output=Output; /* output file name */
-static const char* progname=PROGNAME; /* actual program name */
-
-static void fatal(const char* message)
-{
- fprintf(stderr,"%s: %s\n",progname,message);
- exit(EXIT_FAILURE);
-}
-
-static void cannot(const char* name, const char* what, const char* mode)
-{
- fprintf(stderr,"%s: cannot %s %sput file ",progname,what,mode);
- perror(name);
- exit(EXIT_FAILURE);
-}
-
-static void usage(const char* message, const char* arg)
-{
- if (message!=NULL)
- {
- fprintf(stderr,"%s: ",progname); fprintf(stderr,message,arg); fprintf(stderr,"\n");
- }
- fprintf(stderr,
- "usage: %s [options] [filenames]. Available options are:\n"
- " - process stdin\n"
- " -l list\n"
- " -o name output to file `name' (default is \"" OUTPUT "\")\n"
- " -p parse only\n"
- " -s strip debug information\n"
- " -v show version information\n"
- " -- stop handling options\n",
- progname);
- exit(EXIT_FAILURE);
-}
-
-#define IS(s) (strcmp(argv[i],s)==0)
-
-static int doargs(int argc, char* argv[])
-{
- int i;
- if (argv[0]!=NULL && *argv[0]!=0) progname=argv[0];
- for (i=1; i<argc; i++)
- {
- if (*argv[i]!='-') /* end of options; keep it */
- break;
- else if (IS("--")) /* end of options; skip it */
- {
- ++i;
- break;
- }
- else if (IS("-")) /* end of options; use stdin */
- return i;
- else if (IS("-l")) /* list */
- listing=1;
- else if (IS("-o")) /* output file */
- {
- output=argv[++i];
- if (output==NULL || *output==0) usage("`-o' needs argument",NULL);
- }
- else if (IS("-p")) /* parse only */
- dumping=0;
- else if (IS("-s")) /* strip debug information */
- stripping=1;
- else if (IS("-v")) /* show version */
- {
- printf("%s %s\n",LUA_VERSION,LUA_COPYRIGHT);
- if (argc==2) exit(EXIT_SUCCESS);
- }
- else /* unknown option */
- usage("unrecognized option `%s'",argv[i]);
- }
- if (i==argc && (listing || !dumping))
- {
- dumping=0;
- argv[--i]=Output;
- }
- return i;
-}
-
-static Proto* toproto(lua_State* L, int i)
-{
- const Closure* c=(const Closure*)lua_topointer(L,i);
- return c->l.p;
-}
-
-static Proto* combine(lua_State* L, int n)
-{
- if (n==1)
- return toproto(L,-1);
- else
- {
- int i,pc=0;
- Proto* f=luaF_newproto(L);
- f->source=luaS_newliteral(L,"=(" PROGNAME ")");
- f->maxstacksize=1;
- f->p=luaM_newvector(L,n,Proto*);
- f->sizep=n;
- f->sizecode=2*n+1;
- f->code=luaM_newvector(L,f->sizecode,Instruction);
- for (i=0; i<n; i++)
- {
- f->p[i]=toproto(L,i-n);
- f->code[pc++]=CREATE_ABx(OP_CLOSURE,0,i);
- f->code[pc++]=CREATE_ABC(OP_CALL,0,1,1);
- }
- f->code[pc++]=CREATE_ABC(OP_RETURN,0,1,0);
- return f;
- }
-}
-
-static void strip(lua_State* L, Proto* f)
-{
- int i,n=f->sizep;
- luaM_freearray(L, f->lineinfo, f->sizelineinfo, int);
- luaM_freearray(L, f->locvars, f->sizelocvars, struct LocVar);
- luaM_freearray(L, f->upvalues, f->sizeupvalues, TString *);
- f->lineinfo=NULL; f->sizelineinfo=0;
- f->locvars=NULL; f->sizelocvars=0;
- f->upvalues=NULL; f->sizeupvalues=0;
- f->source=luaS_newliteral(L,"=(none)");
- for (i=0; i<n; i++) strip(L,f->p[i]);
-}
-
-static int writer(lua_State* L, const void* p, size_t size, void* u)
-{
- UNUSED(L);
- return fwrite(p,size,1,(FILE*)u)==1;
-}
-
-int main(int argc, char* argv[])
-{
- lua_State* L;
- Proto* f;
- int i=doargs(argc,argv);
- argc-=i; argv+=i;
- if (argc<=0) usage("no input files given",NULL);
- L=lua_open();
- luaB_opentests(L);
- for (i=0; i<argc; i++)
- {
- const char* filename=IS("-") ? NULL : argv[i];
- if (luaL_loadfile(L,filename)!=0) fatal(lua_tostring(L,-1));
- }
- f=combine(L,argc);
- if (listing) luaU_print(f);
- if (dumping)
- {
- FILE* D=fopen(output,"wb");
- if (D==NULL) cannot(output,"open","out");
- if (stripping) strip(L,f);
- lua_lock(L);
- luaU_dump(L,f,writer,D);
- lua_unlock(L);
- if (ferror(D)) cannot(output,"write","out");
- fclose(D);
- }
- lua_close(L);
- return 0;
-}
+++ /dev/null
-/*
-** $Id: print.c,v 1.1 2004/03/16 21:58:30 niemeyer Exp $
-** print bytecodes
-** See Copyright Notice in lua.h
-*/
-
-#include <stdio.h>
-
-#if 0
-#define DEBUG_PRINT
-#endif
-
-#ifndef LUA_OPNAMES
-#define LUA_OPNAMES
-#endif
-
-#include "ldebug.h"
-#include "lobject.h"
-#include "lopcodes.h"
-#include "lundump.h"
-
-#define Sizeof(x) ((int)sizeof(x))
-#define VOID(p) ((const void*)(p))
-
-static void PrintString(const Proto* f, int n)
-{
- const char* s=svalue(&f->k[n]);
- putchar('"');
- for (; *s; s++)
- {
- switch (*s)
- {
- case '"': printf("\\\""); break;
- case '\a': printf("\\a"); break;
- case '\b': printf("\\b"); break;
- case '\f': printf("\\f"); break;
- case '\n': printf("\\n"); break;
- case '\r': printf("\\r"); break;
- case '\t': printf("\\t"); break;
- case '\v': printf("\\v"); break;
- default: putchar(*s); break;
- }
- }
- putchar('"');
-}
-
-static void PrintConstant(const Proto* f, int i)
-{
- const TObject* o=&f->k[i];
- switch (ttype(o))
- {
- case LUA_TNUMBER:
- printf(LUA_NUMBER_FMT,nvalue(o));
- break;
- case LUA_TSTRING:
- PrintString(f,i);
- break;
- case LUA_TNIL:
- printf("nil");
- break;
- default: /* cannot happen */
- printf("? type=%d",ttype(o));
- break;
- }
-}
-
-static void PrintCode(const Proto* f)
-{
- const Instruction* code=f->code;
- int pc,n=f->sizecode;
- for (pc=0; pc<n; pc++)
- {
- Instruction i=code[pc];
- OpCode o=GET_OPCODE(i);
- int a=GETARG_A(i);
- int b=GETARG_B(i);
- int c=GETARG_C(i);
- int bc=GETARG_Bx(i);
- int sbc=GETARG_sBx(i);
- int line=getline(f,pc);
-#if 0
- printf("%0*lX",Sizeof(i)*2,i);
-#endif
- printf("\t%d\t",pc+1);
- if (line>0) printf("[%d]\t",line); else printf("[-]\t");
- printf("%-9s\t",luaP_opnames[o]);
- switch (getOpMode(o))
- {
- case iABC: printf("%d %d %d",a,b,c); break;
- case iABx: printf("%d %d",a,bc); break;
- case iAsBx: printf("%d %d",a,sbc); break;
- }
- switch (o)
- {
- case OP_LOADK:
- printf("\t; "); PrintConstant(f,bc);
- break;
- case OP_GETUPVAL:
- case OP_SETUPVAL:
- printf("\t; %s", (f->sizeupvalues>0) ? getstr(f->upvalues[b]) : "-");
- break;
- case OP_GETGLOBAL:
- case OP_SETGLOBAL:
- printf("\t; %s",svalue(&f->k[bc]));
- break;
- case OP_GETTABLE:
- case OP_SELF:
- if (c>=MAXSTACK) { printf("\t; "); PrintConstant(f,c-MAXSTACK); }
- break;
- case OP_SETTABLE:
- case OP_ADD:
- case OP_SUB:
- case OP_MUL:
- case OP_DIV:
- case OP_POW:
- case OP_EQ:
- case OP_LT:
- case OP_LE:
- if (b>=MAXSTACK || c>=MAXSTACK)
- {
- printf("\t; ");
- if (b>=MAXSTACK) PrintConstant(f,b-MAXSTACK); else printf("-");
- printf(" ");
- if (c>=MAXSTACK) PrintConstant(f,c-MAXSTACK);
- }
- break;
- case OP_JMP:
- case OP_FORLOOP:
- case OP_TFORPREP:
- printf("\t; to %d",sbc+pc+2);
- break;
- case OP_CLOSURE:
- printf("\t; %p",VOID(f->p[bc]));
- break;
- default:
- break;
- }
- printf("\n");
- }
-}
-
-static const char* Source(const Proto* f)
-{
- const char* s=getstr(f->source);
- if (*s=='@' || *s=='=')
- return s+1;
- else if (*s==LUA_SIGNATURE[0])
- return "(bstring)";
- else
- return "(string)";
-}
-
-#define IsMain(f) (f->lineDefined==0)
-
-#define SS(x) (x==1)?"":"s"
-#define S(x) x,SS(x)
-
-static void PrintHeader(const Proto* f)
-{
- printf("\n%s <%s:%d> (%d instruction%s, %d bytes at %p)\n",
- IsMain(f)?"main":"function",Source(f),f->lineDefined,
- S(f->sizecode),f->sizecode*Sizeof(Instruction),VOID(f));
- printf("%d%s param%s, %d stack%s, %d upvalue%s, ",
- f->numparams,f->is_vararg?"+":"",SS(f->numparams),S(f->maxstacksize),
- S(f->nups));
- printf("%d local%s, %d constant%s, %d function%s\n",
- S(f->sizelocvars),S(f->sizek),S(f->sizep));
-}
-
-#ifdef DEBUG_PRINT
-static void PrintConstants(const Proto* f)
-{
- int i,n=f->sizek;
- printf("constants (%d) for %p:\n",n,VOID(f));
- for (i=0; i<n; i++)
- {
- printf("\t%d\t",i);
- PrintConstant(f,i);
- printf("\n");
- }
-}
-
-static void PrintLocals(const Proto* f)
-{
- int i,n=f->sizelocvars;
- printf("locals (%d) for %p:\n",n,VOID(f));
- for (i=0; i<n; i++)
- {
- printf("\t%d\t%s\t%d\t%d\n",
- i,getstr(f->locvars[i].varname),f->locvars[i].startpc,f->locvars[i].endpc);
- }
-}
-
-static void PrintUpvalues(const Proto* f)
-{
- int i,n=f->sizeupvalues;
- printf("upvalues (%d) for %p:\n",n,VOID(f));
- if (f->upvalues==NULL) return;
- for (i=0; i<n; i++)
- {
- printf("\t%d\t%s\n",i,getstr(f->upvalues[i]));
- }
-}
-#endif
-
-void luaU_print(const Proto* f)
-{
- int i,n=f->sizep;
- PrintHeader(f);
- PrintCode(f);
-#ifdef DEBUG_PRINT
- PrintConstants(f);
- PrintLocals(f);
- PrintUpvalues(f);
-#endif
- for (i=0; i<n; i++) luaU_print(f->p[i]);
-}
+++ /dev/null
-/*
-** $Id: lundump.c,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** load pre-compiled Lua chunks
-** See Copyright Notice in lua.h
-*/
-
-#define lundump_c
-
-#include "lua.h"
-
-#include "ldebug.h"
-#include "lfunc.h"
-#include "lmem.h"
-#include "lopcodes.h"
-#include "lstring.h"
-#include "lundump.h"
-#include "lzio.h"
-
-#define LoadByte (lu_byte) ezgetc
-
-typedef struct {
- lua_State* L;
- ZIO* Z;
- Mbuffer* b;
- int swap;
- const char* name;
-} LoadState;
-
-static void unexpectedEOZ (LoadState* S)
-{
- luaG_runerror(S->L,"unexpected end of file in %s",S->name);
-}
-
-static int ezgetc (LoadState* S)
-{
- int c=zgetc(S->Z);
- if (c==EOZ) unexpectedEOZ(S);
- return c;
-}
-
-static void ezread (LoadState* S, void* b, int n)
-{
- int r=luaZ_read(S->Z,b,n);
- if (r!=0) unexpectedEOZ(S);
-}
-
-static void LoadBlock (LoadState* S, void* b, size_t size)
-{
- if (S->swap)
- {
- char* p=(char*) b+size-1;
- int n=size;
- while (n--) *p--=(char)ezgetc(S);
- }
- else
- ezread(S,b,size);
-}
-
-static void LoadVector (LoadState* S, void* b, int m, size_t size)
-{
- if (S->swap)
- {
- char* q=(char*) b;
- while (m--)
- {
- char* p=q+size-1;
- int n=size;
- while (n--) *p--=(char)ezgetc(S);
- q+=size;
- }
- }
- else
- ezread(S,b,m*size);
-}
-
-static int LoadInt (LoadState* S)
-{
- int x;
- LoadBlock(S,&x,sizeof(x));
- if (x<0) luaG_runerror(S->L,"bad integer in %s",S->name);
- return x;
-}
-
-static size_t LoadSize (LoadState* S)
-{
- size_t x;
- LoadBlock(S,&x,sizeof(x));
- return x;
-}
-
-static lua_Number LoadNumber (LoadState* S)
-{
- lua_Number x;
- LoadBlock(S,&x,sizeof(x));
- return x;
-}
-
-static TString* LoadString (LoadState* S)
-{
- size_t size=LoadSize(S);
- if (size==0)
- return NULL;
- else
- {
- char* s=luaZ_openspace(S->L,S->b,size);
- ezread(S,s,size);
- return luaS_newlstr(S->L,s,size-1); /* remove trailing '\0' */
- }
-}
-
-static void LoadCode (LoadState* S, Proto* f)
-{
- int size=LoadInt(S);
- f->code=luaM_newvector(S->L,size,Instruction);
- f->sizecode=size;
- LoadVector(S,f->code,size,sizeof(*f->code));
-}
-
-static void LoadLocals (LoadState* S, Proto* f)
-{
- int i,n;
- n=LoadInt(S);
- f->locvars=luaM_newvector(S->L,n,LocVar);
- f->sizelocvars=n;
- for (i=0; i<n; i++)
- {
- f->locvars[i].varname=LoadString(S);
- f->locvars[i].startpc=LoadInt(S);
- f->locvars[i].endpc=LoadInt(S);
- }
-}
-
-static void LoadLines (LoadState* S, Proto* f)
-{
- int size=LoadInt(S);
- f->lineinfo=luaM_newvector(S->L,size,int);
- f->sizelineinfo=size;
- LoadVector(S,f->lineinfo,size,sizeof(*f->lineinfo));
-}
-
-static void LoadUpvalues (LoadState* S, Proto* f)
-{
- int i,n;
- n=LoadInt(S);
- if (n!=0 && n!=f->nups)
- luaG_runerror(S->L,"bad nupvalues in %s: read %d; expected %d",
- S->name,n,f->nups);
- f->upvalues=luaM_newvector(S->L,n,TString*);
- f->sizeupvalues=n;
- for (i=0; i<n; i++) f->upvalues[i]=LoadString(S);
-}
-
-static Proto* LoadFunction (LoadState* S, TString* p);
-
-static void LoadConstants (LoadState* S, Proto* f)
-{
- int i,n;
- n=LoadInt(S);
- f->k=luaM_newvector(S->L,n,TObject);
- f->sizek=n;
- for (i=0; i<n; i++)
- {
- TObject* o=&f->k[i];
- int t=LoadByte(S);
- switch (t)
- {
- case LUA_TNUMBER:
- setnvalue(o,LoadNumber(S));
- break;
- case LUA_TSTRING:
- setsvalue2n(o,LoadString(S));
- break;
- case LUA_TNIL:
- setnilvalue(o);
- break;
- default:
- luaG_runerror(S->L,"bad constant type (%d) in %s",t,S->name);
- break;
- }
- }
- n=LoadInt(S);
- f->p=luaM_newvector(S->L,n,Proto*);
- f->sizep=n;
- for (i=0; i<n; i++) f->p[i]=LoadFunction(S,f->source);
-}
-
-static Proto* LoadFunction (LoadState* S, TString* p)
-{
- Proto* f=luaF_newproto(S->L);
- f->source=LoadString(S); if (f->source==NULL) f->source=p;
- f->lineDefined=LoadInt(S);
- f->nups=LoadByte(S);
- f->numparams=LoadByte(S);
- f->is_vararg=LoadByte(S);
- f->maxstacksize=LoadByte(S);
- LoadLines(S,f);
- LoadLocals(S,f);
- LoadUpvalues(S,f);
- LoadConstants(S,f);
- LoadCode(S,f);
-#ifndef TRUST_BINARIES
- if (!luaG_checkcode(f)) luaG_runerror(S->L,"bad code in %s",S->name);
-#endif
- return f;
-}
-
-static void LoadSignature (LoadState* S)
-{
- const char* s=LUA_SIGNATURE;
- while (*s!=0 && ezgetc(S)==*s)
- ++s;
- if (*s!=0) luaG_runerror(S->L,"bad signature in %s",S->name);
-}
-
-static void TestSize (LoadState* S, int s, const char* what)
-{
- int r=LoadByte(S);
- if (r!=s)
- luaG_runerror(S->L,"virtual machine mismatch in %s: "
- "size of %s is %d but read %d",S->name,what,s,r);
-}
-
-#define TESTSIZE(s,w) TestSize(S,s,w)
-#define V(v) v/16,v%16
-
-static void LoadHeader (LoadState* S)
-{
- int version;
- lua_Number x,tx=TEST_NUMBER;
- LoadSignature(S);
- version=LoadByte(S);
- if (version>VERSION)
- luaG_runerror(S->L,"%s too new: "
- "read version %d.%d; expected at most %d.%d",
- S->name,V(version),V(VERSION));
- if (version<VERSION0) /* check last major change */
- luaG_runerror(S->L,"%s too old: "
- "read version %d.%d; expected at least %d.%d",
- S->name,V(version),V(VERSION0));
- S->swap=(luaU_endianness()!=LoadByte(S)); /* need to swap bytes? */
- TESTSIZE(sizeof(int),"int");
- TESTSIZE(sizeof(size_t), "size_t");
- TESTSIZE(sizeof(Instruction), "Instruction");
- TESTSIZE(SIZE_OP, "OP");
- TESTSIZE(SIZE_A, "A");
- TESTSIZE(SIZE_B, "B");
- TESTSIZE(SIZE_C, "C");
- TESTSIZE(sizeof(lua_Number), "number");
- x=LoadNumber(S);
- if ((long)x!=(long)tx) /* disregard errors in last bits of fraction */
- luaG_runerror(S->L,"unknown number format in %s",S->name);
-}
-
-static Proto* LoadChunk (LoadState* S)
-{
- LoadHeader(S);
- return LoadFunction(S,NULL);
-}
-
-/*
-** load precompiled chunk
-*/
-Proto* luaU_undump (lua_State* L, ZIO* Z, Mbuffer* buff)
-{
- LoadState S;
- const char* s=zname(Z);
- if (*s=='@' || *s=='=')
- S.name=s+1;
- else if (*s==LUA_SIGNATURE[0])
- S.name="binary string";
- else
- S.name=s;
- S.L=L;
- S.Z=Z;
- S.b=buff;
- return LoadChunk(&S);
-}
-
-/*
-** find byte order
-*/
-int luaU_endianness (void)
-{
- int x=1;
- return *(char*)&x;
-}
+++ /dev/null
-/*
-** $Id: lundump.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** load pre-compiled Lua chunks
-** See Copyright Notice in lua.h
-*/
-
-#ifndef lundump_h
-#define lundump_h
-
-#include "lobject.h"
-#include "lzio.h"
-
-/* load one chunk; from lundump.c */
-Proto* luaU_undump (lua_State* L, ZIO* Z, Mbuffer* buff);
-
-/* find byte order; from lundump.c */
-int luaU_endianness (void);
-
-/* dump one chunk; from ldump.c */
-void luaU_dump (lua_State* L, const Proto* Main, lua_Chunkwriter w, void* data);
-
-/* print one chunk; from print.c */
-void luaU_print (const Proto* Main);
-
-/* definitions for headers of binary files */
-#define LUA_SIGNATURE "\033Lua" /* binary files start with "<esc>Lua" */
-#define VERSION 0x50 /* last format change was in 5.0 */
-#define VERSION0 0x50 /* last major change was in 5.0 */
-
-/* a multiple of PI for testing native format */
-/* multiplying by 1E7 gives non-trivial integer values */
-#define TEST_NUMBER ((lua_Number)3.14159265358979323846E7)
-
-#endif
+++ /dev/null
-/*
-** $Id: lvm.c,v 1.3 2004/03/23 05:09:14 jbj Exp $
-** Lua virtual machine
-** See Copyright Notice in lua.h
-*/
-
-
-#include <stdarg.h>
-#include <stdlib.h>
-#include <string.h>
-
-/* needed only when `lua_number2str' uses `sprintf' */
-#include <stdio.h>
-
-#define lvm_c
-
-#include "lua.h"
-
-#include "ldebug.h"
-#include "ldo.h"
-#include "lfunc.h"
-#include "lgc.h"
-#include "lobject.h"
-#include "lopcodes.h"
-#include "lstate.h"
-#include "lstring.h"
-#include "ltable.h"
-#include "ltm.h"
-#include "lvm.h"
-
-
-
-/* function to convert a lua_Number to a string */
-#ifndef lua_number2str
-#define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n))
-#endif
-
-
-/* limit for table tag-method chains (to avoid loops) */
-#define MAXTAGLOOP 100
-
-
-const TObject *luaV_tonumber (const TObject *obj, TObject *n) {
- lua_Number num;
- if (ttisnumber(obj)) return obj;
- if (ttisstring(obj) && luaO_str2d(svalue(obj), &num)) {
- setnvalue(n, num);
- return n;
- }
- else
- return NULL;
-}
-
-
-int luaV_tostring (lua_State *L, StkId obj) {
- if (!ttisnumber(obj))
- return 0;
- else {
- char s[32]; /* 16 digits, sign, point and \0 (+ some extra...) */
- lua_number2str(s, nvalue(obj));
- setsvalue2s(obj, luaS_new(L, s));
- return 1;
- }
-}
-
-
-static void traceexec (lua_State *L)
-{
- lu_byte mask = L->hookmask;
- if (mask & LUA_MASKCOUNT) { /* instruction-hook set? */
- if (L->hookcount == 0) {
- resethookcount(L);
- luaD_callhook(L, LUA_HOOKCOUNT, -1);
- return;
- }
- }
- if (mask & LUA_MASKLINE) {
- CallInfo *ci = L->ci;
- Proto *p = ci_func(ci)->l.p;
- int newline = getline(p, pcRel(*ci->u.l.pc, p));
- if (!L->hookinit) {
- luaG_inithooks(L);
- return;
- }
- lua_assert(ci->state & CI_HASFRAME);
- if (pcRel(*ci->u.l.pc, p) == 0) /* tracing may be starting now? */
- ci->u.l.savedpc = *ci->u.l.pc; /* initialize `savedpc' */
- /* calls linehook when enters a new line or jumps back (loop) */
- if (*ci->u.l.pc <= ci->u.l.savedpc ||
- newline != getline(p, pcRel(ci->u.l.savedpc, p))) {
- luaD_callhook(L, LUA_HOOKLINE, newline);
- ci = L->ci; /* previous call may reallocate `ci' */
- }
- ci->u.l.savedpc = *ci->u.l.pc;
- }
-}
-
-
-static void callTMres (lua_State *L, const TObject *f,
- const TObject *p1, const TObject *p2)
-{
- setobj2s(L->top, f); /* push function */
- setobj2s(L->top+1, p1); /* 1st argument */
- setobj2s(L->top+2, p2); /* 2nd argument */
- luaD_checkstack(L, 3); /* cannot check before (could invalidate p1, p2) */
- L->top += 3;
- luaD_call(L, L->top - 3, 1);
- L->top--; /* result will be in L->top */
-}
-
-
-
-static void callTM (lua_State *L, const TObject *f,
- const TObject *p1, const TObject *p2, const TObject *p3)
-{
- setobj2s(L->top, f); /* push function */
- setobj2s(L->top+1, p1); /* 1st argument */
- setobj2s(L->top+2, p2); /* 2nd argument */
- setobj2s(L->top+3, p3); /* 3th argument */
- luaD_checkstack(L, 4); /* cannot check before (could invalidate p1...p3) */
- L->top += 4;
- luaD_call(L, L->top - 4, 0);
-}
-
-
-static const TObject *luaV_index (lua_State *L, const TObject *t,
- TObject *key, int loop)
-{
- const TObject *tm = fasttm(L, hvalue(t)->metatable, TM_INDEX);
- if (tm == NULL) return &luaO_nilobject; /* no TM */
- if (ttisfunction(tm)) {
- callTMres(L, tm, t, key);
- return L->top;
- }
- else return luaV_gettable(L, tm, key, loop);
-}
-
-static const TObject *luaV_getnotable (lua_State *L, const TObject *t,
- TObject *key, int loop)
-{
- const TObject *tm = luaT_gettmbyobj(L, t, TM_INDEX);
- if (ttisnil(tm))
- luaG_typeerror(L, t, "index");
- if (ttisfunction(tm)) {
- callTMres(L, tm, t, key);
- return L->top;
- }
- else return luaV_gettable(L, tm, key, loop);
-}
-
-
-/*
-** Function to index a table.
-** Receives the table at `t' and the key at `key'.
-** leaves the result at `res'.
-*/
-const TObject *luaV_gettable (lua_State *L, const TObject *t, TObject *key,
- int loop) {
- if (loop > MAXTAGLOOP)
- luaG_runerror(L, "loop in gettable");
- if (ttistable(t)) { /* `t' is a table? */
- Table *h = hvalue(t);
- const TObject *v = luaH_get(h, key); /* do a primitive get */
- if (!ttisnil(v)) return v;
- else return luaV_index(L, t, key, loop+1);
- }
- else return luaV_getnotable(L, t, key, loop+1);
-}
-
-
-/*
-** Receives table at `t', key at `key' and value at `val'.
-*/
-void luaV_settable (lua_State *L, const TObject *t, TObject *key, StkId val) {
- const TObject *tm;
- int loop = 0;
- do {
- if (ttistable(t)) { /* `t' is a table? */
- Table *h = hvalue(t);
- TObject *oldval = luaH_set(L, h, key); /* do a primitive set */
- if (!ttisnil(oldval) || /* result is no nil? */
- (tm = fasttm(L, h->metatable, TM_NEWINDEX)) == NULL) { /* or no TM? */
- setobj2t(oldval, val); /* write barrier */
- return;
- }
- /* else will try the tag method */
- }
- else if (ttisnil(tm = luaT_gettmbyobj(L, t, TM_NEWINDEX)))
- luaG_typeerror(L, t, "index");
- if (ttisfunction(tm)) {
- callTM(L, tm, t, key, val);
- return;
- }
- t = tm; /* else repeat with `tm' */
- } while (++loop <= MAXTAGLOOP);
- luaG_runerror(L, "loop in settable");
-}
-
-
-static int call_binTM (lua_State *L, const TObject *p1, const TObject *p2,
- StkId res, TMS event)
-{
- ptrdiff_t result = savestack(L, res);
- const TObject *tm = luaT_gettmbyobj(L, p1, event); /* try first operand */
- if (ttisnil(tm))
- tm = luaT_gettmbyobj(L, p2, event); /* try second operand */
- if (!ttisfunction(tm)) return 0;
- callTMres(L, tm, p1, p2);
- res = restorestack(L, result); /* previous call may change stack */
- setobjs2s(res, L->top);
- return 1;
-}
-
-
-static const TObject *get_compTM (lua_State *L, Table *mt1, Table *mt2,
- TMS event)
-{
- const TObject *tm1 = fasttm(L, mt1, event);
- const TObject *tm2;
- if (tm1 == NULL) return NULL; /* no metamethod */
- if (mt1 == mt2) return tm1; /* same metatables => same metamethods */
- tm2 = fasttm(L, mt2, event);
- if (tm2 == NULL) return NULL; /* no metamethod */
- if (luaO_rawequalObj(tm1, tm2)) /* same metamethods? */
- return tm1;
- return NULL;
-}
-
-
-static int call_orderTM (lua_State *L, const TObject *p1, const TObject *p2,
- TMS event)
-{
- const TObject *tm1 = luaT_gettmbyobj(L, p1, event);
- const TObject *tm2;
- if (ttisnil(tm1)) return -1; /* no metamethod? */
- tm2 = luaT_gettmbyobj(L, p2, event);
- if (!luaO_rawequalObj(tm1, tm2)) /* different metamethods? */
- return -1;
- callTMres(L, tm1, p1, p2);
- return !l_isfalse(L->top);
-}
-
-
-static int luaV_strcmp (const TString *ls, const TString *rs)
-{
- const char *l = getstr(ls);
- size_t ll = ls->tsv.len;
- const char *r = getstr(rs);
- size_t lr = rs->tsv.len;
- for (;;) {
- int temp = strcoll(l, r);
- if (temp != 0) return temp;
- else { /* strings are equal up to a `\0' */
- size_t len = strlen(l); /* index of first `\0' in both strings */
- if (len == lr) /* r is finished? */
- return (len == ll) ? 0 : 1;
- else if (len == ll) /* l is finished? */
- return -1; /* l is smaller than r (because r is not finished) */
- /* both strings longer than `len'; go on comparing (after the `\0') */
- len++;
- l += len; ll -= len; r += len; lr -= len;
- }
- }
-}
-
-
-int luaV_lessthan (lua_State *L, const TObject *l, const TObject *r) {
- int res;
- if (ttype(l) != ttype(r))
- return luaG_ordererror(L, l, r);
- else if (ttisnumber(l))
- return nvalue(l) < nvalue(r);
- else if (ttisstring(l))
- return luaV_strcmp(tsvalue(l), tsvalue(r)) < 0;
- else if ((res = call_orderTM(L, l, r, TM_LT)) != -1)
- return res;
- return luaG_ordererror(L, l, r);
-}
-
-
-static int luaV_lessequal (lua_State *L, const TObject *l, const TObject *r)
-{
- int res;
- if (ttype(l) != ttype(r))
- return luaG_ordererror(L, l, r);
- else if (ttisnumber(l))
- return nvalue(l) <= nvalue(r);
- else if (ttisstring(l))
- return luaV_strcmp(tsvalue(l), tsvalue(r)) <= 0;
- else if ((res = call_orderTM(L, l, r, TM_LE)) != -1) /* first try `le' */
- return res;
- else if ((res = call_orderTM(L, r, l, TM_LT)) != -1) /* else try `lt' */
- return !res;
- return luaG_ordererror(L, l, r);
-}
-
-
-int luaV_equalval (lua_State *L, const TObject *t1, const TObject *t2) {
- const TObject *tm;
- lua_assert(ttype(t1) == ttype(t2));
- switch (ttype(t1)) {
- case LUA_TNIL: return 1;
- case LUA_TNUMBER: return nvalue(t1) == nvalue(t2);
- case LUA_TBOOLEAN: return bvalue(t1) == bvalue(t2); /* true must be 1 !! */
- case LUA_TLIGHTUSERDATA: return pvalue(t1) == pvalue(t2);
- case LUA_TUSERDATA: {
- if (uvalue(t1) == uvalue(t2)) return 1;
- tm = get_compTM(L, uvalue(t1)->uv.metatable, uvalue(t2)->uv.metatable,
- TM_EQ);
- break; /* will try TM */
- }
- case LUA_TTABLE: {
- if (hvalue(t1) == hvalue(t2)) return 1;
- tm = get_compTM(L, hvalue(t1)->metatable, hvalue(t2)->metatable, TM_EQ);
- break; /* will try TM */
- }
- default: return gcvalue(t1) == gcvalue(t2);
- }
- if (tm == NULL) return 0; /* no TM? */
- callTMres(L, tm, t1, t2); /* call TM */
- return !l_isfalse(L->top);
-}
-
-
-void luaV_concat (lua_State *L, int total, int last) {
- do {
- StkId top = L->base + last + 1;
- int n = 2; /* number of elements handled in this pass (at least 2) */
- if (!tostring(L, top-2) || !tostring(L, top-1)) {
- if (!call_binTM(L, top-2, top-1, top-2, TM_CONCAT))
- luaG_concaterror(L, top-2, top-1);
- } else if (tsvalue(top-1)->tsv.len > 0) { /* if len=0, do nothing */
- /* at least two string values; get as many as possible */
- lu_mem tl = cast(lu_mem, tsvalue(top-1)->tsv.len) +
- cast(lu_mem, tsvalue(top-2)->tsv.len);
- char *buffer;
- int i;
- while (n < total && tostring(L, top-n-1)) { /* collect total length */
- tl += tsvalue(top-n-1)->tsv.len;
- n++;
- }
- if (tl > MAX_SIZET) luaG_runerror(L, "string size overflow");
- buffer = luaZ_openspace(L, &G(L)->buff, tl);
- tl = 0;
- for (i=n; i>0; i--) { /* concat all strings */
- size_t l = tsvalue(top-i)->tsv.len;
- memcpy(buffer+tl, svalue(top-i), l);
- tl += l;
- }
- setsvalue2s(top-n, luaS_newlstr(L, buffer, tl));
- }
- total -= n-1; /* got `n' strings to create 1 new */
- last -= n-1;
- } while (total > 1); /* repeat until only 1 result left */
-}
-
-
-static void Arith (lua_State *L, StkId ra,
- const TObject *rb, const TObject *rc, TMS op)
-{
- TObject tempb, tempc;
- const TObject *b, *c;
- if ((b = luaV_tonumber(rb, &tempb)) != NULL &&
- (c = luaV_tonumber(rc, &tempc)) != NULL) {
- switch (op) {
- case TM_ADD: setnvalue(ra, nvalue(b) + nvalue(c)); break;
- case TM_SUB: setnvalue(ra, nvalue(b) - nvalue(c)); break;
- case TM_MUL: setnvalue(ra, nvalue(b) * nvalue(c)); break;
- case TM_DIV: setnvalue(ra, nvalue(b) / nvalue(c)); break;
- case TM_POW: {
- const TObject *f = luaH_getstr(hvalue(gt(L)), G(L)->tmname[TM_POW]);
- ptrdiff_t res = savestack(L, ra);
- if (!ttisfunction(f))
- luaG_runerror(L, "`__pow' (`^' operator) is not a function");
- callTMres(L, f, b, c);
- ra = restorestack(L, res); /* previous call may change stack */
- setobjs2s(ra, L->top);
- break;
- }
- default: lua_assert(0); break;
- }
- }
- else if (!call_binTM(L, rb, rc, ra, op))
- luaG_aritherror(L, rb, rc);
-}
-
-
-
-/*
-** some macros for common tasks in `luaV_execute'
-*/
-
-#define runtime_check(L, c) { if (!(c)) return 0; }
-
-#define RA(i) (base+GETARG_A(i))
-/* to be used after possible stack reallocation */
-#define XRA(i) (L->base+GETARG_A(i))
-#define RB(i) (base+GETARG_B(i))
-#define RKB(i) ((GETARG_B(i) < MAXSTACK) ? RB(i) : k+GETARG_B(i)-MAXSTACK)
-#define RC(i) (base+GETARG_C(i))
-#define RKC(i) ((GETARG_C(i) < MAXSTACK) ? RC(i) : k+GETARG_C(i)-MAXSTACK)
-#define KBx(i) (k+GETARG_Bx(i))
-
-
-#define dojump(pc, i) ((pc) += (i))
-
-
-StkId luaV_execute (lua_State *L) {
- LClosure *cl;
- TObject *k;
- const Instruction *pc;
- callentry: /* entry point when calling new functions */
- if (L->hookmask & LUA_MASKCALL) {
- L->ci->u.l.pc = &pc;
- luaD_callhook(L, LUA_HOOKCALL, -1);
- }
- retentry: /* entry point when returning to old functions */
- L->ci->u.l.pc = &pc;
- lua_assert(L->ci->state == CI_SAVEDPC ||
- L->ci->state == (CI_SAVEDPC | CI_CALLING));
- L->ci->state = CI_HASFRAME; /* activate frame */
- pc = L->ci->u.l.savedpc;
- cl = &clvalue(L->base - 1)->l;
- k = cl->p->k;
- /* main loop of interpreter */
- for (;;) {
- const Instruction i = *pc++;
- StkId base, ra;
- if ((L->hookmask & (LUA_MASKLINE | LUA_MASKCOUNT)) &&
- (--L->hookcount == 0 || L->hookmask & LUA_MASKLINE)) {
- traceexec(L);
- if (L->ci->state & CI_YIELD) { /* did hook yield? */
- L->ci->u.l.savedpc = pc - 1;
- L->ci->state = CI_YIELD | CI_SAVEDPC;
- return NULL;
- }
- }
- /* warning!! several calls may realloc the stack and invalidate `ra' */
- base = L->base;
- ra = RA(i);
- lua_assert(L->ci->state & CI_HASFRAME);
- lua_assert(base == L->ci->base);
- lua_assert(L->top <= L->stack + L->stacksize && L->top >= base);
- lua_assert(L->top == L->ci->top ||
- GET_OPCODE(i) == OP_CALL || GET_OPCODE(i) == OP_TAILCALL ||
- GET_OPCODE(i) == OP_RETURN || GET_OPCODE(i) == OP_SETLISTO);
- switch (GET_OPCODE(i)) {
- case OP_MOVE: {
- setobjs2s(ra, RB(i));
- break;
- }
- case OP_LOADK: {
- setobj2s(ra, KBx(i));
- break;
- }
- case OP_LOADBOOL: {
- setbvalue(ra, GETARG_B(i));
- if (GETARG_C(i)) pc++; /* skip next instruction (if C) */
- break;
- }
- case OP_LOADNIL: {
- TObject *rb = RB(i);
- do {
- setnilvalue(rb--);
- } while (rb >= ra);
- break;
- }
- case OP_GETUPVAL: {
- int b = GETARG_B(i);
- setobj2s(ra, cl->upvals[b]->v);
- break;
- }
- case OP_GETGLOBAL: {
- TObject *rb = KBx(i);
- const TObject *v;
- lua_assert(ttisstring(rb) && ttistable(&cl->g));
- v = luaH_getstr(hvalue(&cl->g), tsvalue(rb));
- if (!ttisnil(v)) { setobj2s(ra, v); }
- else
- setobj2s(XRA(i), luaV_index(L, &cl->g, rb, 0));
- break;
- }
- case OP_GETTABLE: {
- StkId rb = RB(i);
- TObject *rc = RKC(i);
- if (ttistable(rb)) {
- const TObject *v = luaH_get(hvalue(rb), rc);
- if (!ttisnil(v)) { setobj2s(ra, v); }
- else
- setobj2s(XRA(i), luaV_index(L, rb, rc, 0));
- }
- else
- setobj2s(XRA(i), luaV_getnotable(L, rb, rc, 0));
- break;
- }
- case OP_SETGLOBAL: {
- lua_assert(ttisstring(KBx(i)) && ttistable(&cl->g));
- luaV_settable(L, &cl->g, KBx(i), ra);
- break;
- }
- case OP_SETUPVAL: {
- int b = GETARG_B(i);
- setobj(cl->upvals[b]->v, ra); /* write barrier */
- break;
- }
- case OP_SETTABLE: {
- luaV_settable(L, ra, RKB(i), RKC(i));
- break;
- }
- case OP_NEWTABLE: {
- int b = GETARG_B(i);
- b = fb2int(b);
- sethvalue(ra, luaH_new(L, b, GETARG_C(i)));
- luaC_checkGC(L);
- break;
- }
- case OP_SELF: {
- StkId rb = RB(i);
- TObject *rc = RKC(i);
- runtime_check(L, ttisstring(rc));
- setobjs2s(ra+1, rb);
- if (ttistable(rb)) {
- const TObject *v = luaH_getstr(hvalue(rb), tsvalue(rc));
- if (!ttisnil(v)) { setobj2s(ra, v); }
- else
- setobj2s(XRA(i), luaV_index(L, rb, rc, 0));
- }
- else
- setobj2s(XRA(i), luaV_getnotable(L, rb, rc, 0));
- break;
- }
- case OP_ADD: {
- TObject *rb = RKB(i);
- TObject *rc = RKC(i);
- if (ttisnumber(rb) && ttisnumber(rc)) {
- setnvalue(ra, nvalue(rb) + nvalue(rc));
- }
- else
- Arith(L, ra, rb, rc, TM_ADD);
- break;
- }
- case OP_SUB: {
- TObject *rb = RKB(i);
- TObject *rc = RKC(i);
- if (ttisnumber(rb) && ttisnumber(rc)) {
- setnvalue(ra, nvalue(rb) - nvalue(rc));
- }
- else
- Arith(L, ra, rb, rc, TM_SUB);
- break;
- }
- case OP_MUL: {
- TObject *rb = RKB(i);
- TObject *rc = RKC(i);
- if (ttisnumber(rb) && ttisnumber(rc)) {
- setnvalue(ra, nvalue(rb) * nvalue(rc));
- }
- else
- Arith(L, ra, rb, rc, TM_MUL);
- break;
- }
- case OP_DIV: {
- TObject *rb = RKB(i);
- TObject *rc = RKC(i);
- if (ttisnumber(rb) && ttisnumber(rc)) {
- setnvalue(ra, nvalue(rb) / nvalue(rc));
- }
- else
- Arith(L, ra, rb, rc, TM_DIV);
- break;
- }
- case OP_POW: {
- Arith(L, ra, RKB(i), RKC(i), TM_POW);
- break;
- }
- case OP_UNM: {
- const TObject *rb = RB(i);
- TObject temp;
- if (tonumber(rb, &temp)) {
- setnvalue(ra, -nvalue(rb));
- }
- else {
- setnilvalue(&temp);
- if (!call_binTM(L, RB(i), &temp, ra, TM_UNM))
- luaG_aritherror(L, RB(i), &temp);
- }
- break;
- }
- case OP_NOT: {
- int res = l_isfalse(RB(i)); /* next assignment may change this value */
- setbvalue(ra, res);
- break;
- }
- case OP_CONCAT: {
- int b = GETARG_B(i);
- int c = GETARG_C(i);
- luaV_concat(L, c-b+1, c); /* may change `base' (and `ra') */
- base = L->base;
- setobjs2s(RA(i), base+b);
- luaC_checkGC(L);
- break;
- }
- case OP_JMP: {
- dojump(pc, GETARG_sBx(i));
- break;
- }
- case OP_EQ: {
- if (equalobj(L, RKB(i), RKC(i)) != GETARG_A(i)) pc++;
- else dojump(pc, GETARG_sBx(*pc) + 1);
- break;
- }
- case OP_LT: {
- if (luaV_lessthan(L, RKB(i), RKC(i)) != GETARG_A(i)) pc++;
- else dojump(pc, GETARG_sBx(*pc) + 1);
- break;
- }
- case OP_LE: {
- if (luaV_lessequal(L, RKB(i), RKC(i)) != GETARG_A(i)) pc++;
- else dojump(pc, GETARG_sBx(*pc) + 1);
- break;
- }
- case OP_TEST: {
- TObject *rb = RB(i);
- if (l_isfalse(rb) == GETARG_C(i)) pc++;
- else {
- setobjs2s(ra, rb);
- dojump(pc, GETARG_sBx(*pc) + 1);
- }
- break;
- }
- case OP_CALL:
- case OP_TAILCALL: {
- StkId firstResult;
- int b = GETARG_B(i);
- int nresults;
- if (b != 0) L->top = ra+b; /* else previous instruction set top */
- nresults = GETARG_C(i) - 1;
- firstResult = luaD_precall(L, ra);
- if (firstResult) {
- if (firstResult > L->top) { /* yield? */
- lua_assert(L->ci->state == (CI_C | CI_YIELD));
- (L->ci - 1)->u.l.savedpc = pc;
- (L->ci - 1)->state = CI_SAVEDPC;
- return NULL;
- }
- /* it was a C function (`precall' called it); adjust results */
- luaD_poscall(L, nresults, firstResult);
- if (nresults >= 0) L->top = L->ci->top;
- }
- else { /* it is a Lua function */
- if (GET_OPCODE(i) == OP_CALL) { /* regular call? */
- (L->ci-1)->u.l.savedpc = pc; /* save `pc' to return later */
- (L->ci-1)->state = (CI_SAVEDPC | CI_CALLING);
- }
- else { /* tail call: put new frame in place of previous one */
- int aux;
- base = (L->ci - 1)->base; /* `luaD_precall' may change the stack */
- ra = RA(i);
- if (L->openupval) luaF_close(L, base);
- for (aux = 0; ra+aux < L->top; aux++) /* move frame down */
- setobjs2s(base+aux-1, ra+aux);
- (L->ci - 1)->top = L->top = base+aux; /* correct top */
- lua_assert(L->ci->state & CI_SAVEDPC);
- (L->ci - 1)->u.l.savedpc = L->ci->u.l.savedpc;
- (L->ci - 1)->u.l.tailcalls++; /* one more call lost */
- (L->ci - 1)->state = CI_SAVEDPC;
- L->ci--; /* remove new frame */
- L->base = L->ci->base;
- }
- goto callentry;
- }
- break;
- }
- case OP_RETURN: {
- CallInfo *ci = L->ci - 1; /* previous function frame */
- int b = GETARG_B(i);
- if (b != 0) L->top = ra+b-1;
- lua_assert(L->ci->state & CI_HASFRAME);
- if (L->openupval) luaF_close(L, base);
- L->ci->state = CI_SAVEDPC; /* deactivate current function */
- L->ci->u.l.savedpc = pc;
- /* previous function was running `here'? */
- if (!(ci->state & CI_CALLING)) {
- lua_assert((ci->state & CI_C) || ci->u.l.pc != &pc);
- return ra; /* no: return */
- }
- else { /* yes: continue its execution */
- int nresults;
- lua_assert(ttisfunction(ci->base - 1) && (ci->state & CI_SAVEDPC));
- lua_assert(GET_OPCODE(*(ci->u.l.savedpc - 1)) == OP_CALL);
- nresults = GETARG_C(*(ci->u.l.savedpc - 1)) - 1;
- luaD_poscall(L, nresults, ra);
- if (nresults >= 0) L->top = L->ci->top;
- goto retentry;
- }
- }
- case OP_FORLOOP: {
- lua_Number step, idx, limit;
- const TObject *plimit = ra+1;
- const TObject *pstep = ra+2;
- if (!ttisnumber(ra))
- luaG_runerror(L, "`for' initial value must be a number");
- if (!tonumber(plimit, ra+1))
- luaG_runerror(L, "`for' limit must be a number");
- if (!tonumber(pstep, ra+2))
- luaG_runerror(L, "`for' step must be a number");
- step = nvalue(pstep);
- idx = nvalue(ra) + step; /* increment index */
- limit = nvalue(plimit);
- if (step > 0 ? idx <= limit : idx >= limit) {
- dojump(pc, GETARG_sBx(i)); /* jump back */
- chgnvalue(ra, idx); /* update index */
- }
- break;
- }
- case OP_TFORLOOP: {
- int nvar = GETARG_C(i) + 1;
- StkId cb = ra + nvar + 2; /* call base */
- setobjs2s(cb, ra);
- setobjs2s(cb+1, ra+1);
- setobjs2s(cb+2, ra+2);
- L->top = cb+3; /* func. + 2 args (state and index) */
- luaD_call(L, cb, nvar);
- L->top = L->ci->top;
- ra = XRA(i) + 2; /* final position of first result */
- cb = ra + nvar;
- do { /* move results to proper positions */
- nvar--;
- setobjs2s(ra+nvar, cb+nvar);
- } while (nvar > 0);
- if (ttisnil(ra)) /* break loop? */
- pc++; /* skip jump (break loop) */
- else
- dojump(pc, GETARG_sBx(*pc) + 1); /* jump back */
- break;
- }
- case OP_TFORPREP: { /* for compatibility only */
- if (ttistable(ra)) {
- setobjs2s(ra+1, ra);
- setobj2s(ra, luaH_getstr(hvalue(gt(L)), luaS_new(L, "next")));
- }
- dojump(pc, GETARG_sBx(i));
- break;
- }
- case OP_SETLIST:
- case OP_SETLISTO: {
- int bc;
- int n;
- Table *h;
- runtime_check(L, ttistable(ra));
- h = hvalue(ra);
- bc = GETARG_Bx(i);
- if (GET_OPCODE(i) == OP_SETLIST)
- n = (bc&(LFIELDS_PER_FLUSH-1)) + 1;
- else {
- n = L->top - ra - 1;
- L->top = L->ci->top;
- }
- bc &= ~(LFIELDS_PER_FLUSH-1); /* bc = bc - bc%FPF */
- for (; n > 0; n--)
- setobj2t(luaH_setnum(L, h, bc+n), ra+n); /* write barrier */
- break;
- }
- case OP_CLOSE: {
- luaF_close(L, ra);
- break;
- }
- case OP_CLOSURE: {
- Proto *p;
- Closure *ncl;
- int nup, j;
- p = cl->p->p[GETARG_Bx(i)];
- nup = p->nups;
- ncl = luaF_newLclosure(L, nup, &cl->g);
- ncl->l.p = p;
- for (j=0; j<nup; j++, pc++) {
- if (GET_OPCODE(*pc) == OP_GETUPVAL)
- ncl->l.upvals[j] = cl->upvals[GETARG_B(*pc)];
- else {
- lua_assert(GET_OPCODE(*pc) == OP_MOVE);
- ncl->l.upvals[j] = luaF_findupval(L, base + GETARG_B(*pc));
- }
- }
- setclvalue(ra, ncl);
- luaC_checkGC(L);
- break;
- }
- }
- }
-}
-
-
+++ /dev/null
-/*
-** $Id: lvm.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Lua virtual machine
-** See Copyright Notice in lua.h
-*/
-
-#ifndef lvm_h
-#define lvm_h
-
-
-#include "ldo.h"
-#include "lobject.h"
-#include "ltm.h"
-
-
-#define tostring(L,o) ((ttype(o) == LUA_TSTRING) || (luaV_tostring(L, o)))
-
-#define tonumber(o,n) (ttype(o) == LUA_TNUMBER || \
- (((o) = luaV_tonumber(o,n)) != NULL))
-
-#define equalobj(L,o1,o2) \
- (ttype(o1) == ttype(o2) && luaV_equalval(L, o1, o2))
-
-
-int luaV_lessthan (lua_State *L, const TObject *l, const TObject *r);
-int luaV_equalval (lua_State *L, const TObject *t1, const TObject *t2);
-const TObject *luaV_tonumber (const TObject *obj, TObject *n);
-int luaV_tostring (lua_State *L, StkId obj);
-const TObject *luaV_gettable (lua_State *L, const TObject *t, TObject *key,
- int loop);
-void luaV_settable (lua_State *L, const TObject *t, TObject *key, StkId val);
-StkId luaV_execute (lua_State *L);
-void luaV_concat (lua_State *L, int total, int last);
-
-#endif
+++ /dev/null
-/*
-** $Id: lzio.c,v 1.1 2004/03/16 21:58:30 niemeyer Exp $
-** a generic input stream interface
-** See Copyright Notice in lua.h
-*/
-
-
-#include <string.h>
-
-#define lzio_c
-
-#include "lua.h"
-
-#include "llimits.h"
-#include "lmem.h"
-#include "lzio.h"
-
-
-int luaZ_fill (ZIO *z) {
- size_t size;
- const char *buff = z->reader(NULL, z->data, &size);
- if (buff == NULL || size == 0) return EOZ;
- z->n = size - 1;
- z->p = buff;
- return char2int(*(z->p++));
-}
-
-
-int luaZ_lookahead (ZIO *z) {
- if (z->n == 0) {
- int c = luaZ_fill(z);
- if (c == EOZ) return c;
- z->n++;
- z->p--;
- }
- return char2int(*z->p);
-}
-
-
-void luaZ_init (ZIO *z, lua_Chunkreader reader, void *data, const char *name) {
- z->reader = reader;
- z->data = data;
- z->name = name;
- z->n = 0;
- z->p = NULL;
-}
-
-
-/* --------------------------------------------------------------- read --- */
-size_t luaZ_read (ZIO *z, void *b, size_t n) {
- while (n) {
- size_t m;
- if (z->n == 0) {
- if (luaZ_fill(z) == EOZ)
- return n; /* return number of missing bytes */
- else {
- ++z->n; /* filbuf removed first byte; put back it */
- --z->p;
- }
- }
- m = (n <= z->n) ? n : z->n; /* min. between n and z->n */
- memcpy(b, z->p, m);
- z->n -= m;
- z->p += m;
- b = (char *)b + m;
- n -= m;
- }
- return 0;
-}
-
-/* ------------------------------------------------------------------------ */
-char *luaZ_openspace (lua_State *L, Mbuffer *buff, size_t n) {
- if (n > buff->buffsize) {
- if (n < LUA_MINBUFFER) n = LUA_MINBUFFER;
- luaM_reallocvector(L, buff->buffer, buff->buffsize, n, char);
- buff->buffsize = n;
- }
- return buff->buffer;
-}
-
-
+++ /dev/null
-/*
-** $Id: lzio.h,v 1.2 2004/03/23 05:09:14 jbj Exp $
-** Buffered streams
-** See Copyright Notice in lua.h
-*/
-
-
-#ifndef lzio_h
-#define lzio_h
-
-#include "lua.h"
-
-
-#define EOZ (-1) /* end of stream */
-
-typedef struct Zio ZIO;
-
-
-#define char2int(c) cast(int, cast(unsigned char, (c)))
-
-#define zgetc(z) (((z)->n--)>0 ? char2int(*(z)->p++) : luaZ_fill(z))
-
-#define zname(z) ((z)->name)
-
-void luaZ_init (ZIO *z, lua_Chunkreader reader, void *data, const char *name);
-size_t luaZ_read (ZIO* z, void* b, size_t n) /* read next n bytes */;
-int luaZ_lookahead (ZIO *z);
-
-
-
-typedef struct Mbuffer {
- char *buffer;
- size_t buffsize;
-} Mbuffer;
-
-
-char *luaZ_openspace (lua_State *L, Mbuffer *buff, size_t n);
-
-#define luaZ_initbuffer(L, buff) ((buff)->buffer = NULL, (buff)->buffsize = 0)
-
-#define luaZ_sizebuffer(buff) ((buff)->buffsize)
-#define luaZ_buffer(buff) ((buff)->buffer)
-
-#define luaZ_resizebuffer(L, buff, size) \
- (luaM_reallocvector(L, (buff)->buffer, (buff)->buffsize, size, char), \
- (buff)->buffsize = size)
-
-#define luaZ_freebuffer(L, buff) luaZ_resizebuffer(L, buff, 0)
-
-
-/* --------- Private Part ------------------ */
-
-struct Zio {
- size_t n; /* bytes still unread */
- const char *p; /* current position in buffer */
- lua_Chunkreader reader;
- void* data; /* additional data */
- const char *name;
-};
-
-
-int luaZ_fill (ZIO *z);
-
-#endif
projects / tools / librpm-tizen.git / commitdiff