+++ /dev/null
-/* C Compatible Compiler Preprocessor (CCCP)
- Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997,
- 1998, 1999, 2000 Free Software Foundation, Inc.
- Written by Paul Rubin, June 1986
- Adapted to ANSI C, Richard Stallman, Jan 1987
-
-This program is free software; you can redistribute it and/or modify it
-under the terms of the GNU General Public License as published by the
-Free Software Foundation; either version 2, or (at your option) any
-later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
-
-#include "config.h"
-
-#include "system.h"
-#include <signal.h>
-
-#ifdef HAVE_SYS_RESOURCE_H
-# include <sys/resource.h>
-#endif
-
-typedef unsigned char U_CHAR;
-
-#include "pcp.h"
-#include "intl.h"
-#include "prefix.h"
-#include "version.h"
-
-#ifdef MULTIBYTE_CHARS
-#include "mbchar.h"
-#include <locale.h>
-#endif /* MULTIBYTE_CHARS */
-
-#ifndef GET_ENV_PATH_LIST
-#define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
-#endif
-
-#ifndef STANDARD_INCLUDE_DIR
-# define STANDARD_INCLUDE_DIR "/usr/include"
-#endif
-
-/* By default, the suffix for object files is ".o". */
-#ifdef OBJECT_SUFFIX
-# define HAVE_OBJECT_SUFFIX
-#else
-# define OBJECT_SUFFIX ".o"
-#endif
-
-/* VMS-specific definitions */
-#ifdef VMS
-#include <descrip.h>
-#include <ssdef.h>
-#include <syidef.h>
-#define open(fname,mode,prot) VMS_open (fname,mode,prot)
-#define fopen(fname,mode) VMS_fopen (fname,mode)
-#define freopen(fname,mode,ofile) VMS_freopen (fname,mode,ofile)
-#define fstat(fd,stbuf) VMS_fstat (fd,stbuf)
-#define fwrite(ptr,size,nitems,stream) VMS_fwrite (ptr,size,nitems,stream)
-static int VMS_fstat (), VMS_stat ();
-static int VMS_open ();
-static FILE *VMS_fopen ();
-static FILE *VMS_freopen ();
-static size_t VMS_fwrite ();
-static void hack_vms_include_specification ();
-#define INO_T_EQ(a, b) (!bcmp((char *) &(a), (char *) &(b), sizeof (a)))
-#define INO_T_HASH(a) 0
-#define INCLUDE_LEN_FUDGE 12 /* leave room for VMS syntax conversion */
-#endif /* VMS */
-
-/* Windows does not natively support inodes, and neither does MSDOS.
- Cygwin's emulation can generate non-unique inodes, so don't use it. */
-#if (defined (_WIN32) && ! defined (_UWIN)) \
- || defined (__MSDOS__)
-#define INO_T_EQ(a, b) 0
-#endif
-
-#ifndef INO_T_EQ
-#define INO_T_EQ(a, b) ((a) == (b))
-#endif
-
-#ifndef INO_T_HASH
-#define INO_T_HASH(a) (a)
-#endif
-
-#ifndef INCLUDE_LEN_FUDGE
-#define INCLUDE_LEN_FUDGE 0
-#endif
-
-/* External declarations. */
-
-HOST_WIDEST_INT parse_escape PARAMS ((char **, HOST_WIDEST_INT));
-HOST_WIDEST_INT parse_c_expression PARAMS ((char *, int));
-\f
-/* Name under which this program was invoked. */
-
-static const char *progname;
-
-/* Nonzero means use extra default include directories for C++. */
-
-static int cplusplus;
-
-/* Nonzero means handle cplusplus style comments */
-
-static int cplusplus_comments;
-
-/* Nonzero means handle #import, for objective C. */
-
-static int objc;
-
-/* Nonzero means this is an assembly file, and allow
- unknown directives, which could be comments. */
-
-static int lang_asm;
-
-/* Current maximum length of directory names in the search path
- for include files. (Altered as we get more of them.) */
-
-static int max_include_len;
-
-/* Nonzero means turn NOTREACHED into #pragma NOTREACHED etc */
-
-static int for_lint = 0;
-
-/* Nonzero means copy comments into the output file. */
-
-static int put_out_comments = 0;
-
-/* Nonzero means don't process the ANSI trigraph sequences. */
-
-static int no_trigraphs = 0;
-
-/* Nonzero means print the names of included files rather than
- the preprocessed output. 1 means just the #include "...",
- 2 means #include <...> as well. */
-
-static int print_deps = 0;
-
-/* Nonzero if missing .h files in -M output are assumed to be generated
- files and not errors. */
-
-static int print_deps_missing_files = 0;
-
-/* Nonzero means print names of header files (-H). */
-
-static int print_include_names = 0;
-
-/* Nonzero means don't output line number information. */
-
-static int no_line_directives;
-
-/* Nonzero means output the text in failing conditionals,
- inside #failed ... #endfailed. */
-
-static int output_conditionals;
-
-/* dump_only means inhibit output of the preprocessed text
- and instead output the definitions of all user-defined
- macros in a form suitable for use as input to cccp.
- dump_names means pass #define and the macro name through to output.
- dump_definitions means pass the whole definition (plus #define) through
-*/
-
-static enum {dump_none, dump_only, dump_names, dump_definitions}
- dump_macros = dump_none;
-
-/* Nonzero means pass all #define and #undef directives which we actually
- process through to the output stream. This feature is used primarily
- to allow cc1 to record the #defines and #undefs for the sake of
- debuggers which understand about preprocessor macros, but it may
- also be useful with -E to figure out how symbols are defined, and
- where they are defined. */
-static int debug_output = 0;
-
-/* Nonzero means pass #include lines through to the output,
- even if they are ifdefed out. */
-static int dump_includes;
-
-/* Nonzero indicates special processing used by the pcp program. The
- special effects of this mode are:
-
- Inhibit all macro expansion, except those inside #if directives.
-
- Process #define directives normally, and output their contents
- to the output file.
-
- Output preconditions to pcp_outfile indicating all the relevant
- preconditions for use of this file in a later cpp run.
-*/
-static FILE *pcp_outfile;
-
-/* Nonzero means we are inside an IF during a -pcp run. In this mode
- macro expansion is done, and preconditions are output for all macro
- uses requiring them. */
-static int pcp_inside_if;
-
-/* Nonzero means never to include precompiled files.
- This is 1 since there's no way now to make precompiled files,
- so it's not worth testing for them. */
-static int no_precomp = 1;
-
-/* Nonzero means give all the error messages the ANSI standard requires. */
-
-int pedantic;
-
-/* Nonzero means try to make failure to fit ANSI C an error. */
-
-static int pedantic_errors;
-
-/* Nonzero means don't print warning messages. -w. */
-
-static int inhibit_warnings = 0;
-
-/* Nonzero means warn if slash-star appears in a slash-star comment,
- or if newline-backslash appears in a slash-slash comment. */
-
-static int warn_comments;
-
-/* Nonzero means warn if a macro argument is (or would be)
- stringified with -traditional. */
-
-static int warn_stringify;
-
-/* Nonzero means warn if there are any trigraphs. */
-
-static int warn_trigraphs;
-
-/* Nonzero means warn if undefined identifiers are evaluated in an #if. */
-
-static int warn_undef;
-
-/* Nonzero means warn if we find white space where it doesn't belong. */
-
-static int warn_white_space;
-
-/* Nonzero means warn if #import is used. */
-
-static int warn_import = 1;
-
-/* Nonzero means turn warnings into errors. */
-
-static int warnings_are_errors;
-
-/* Nonzero means try to imitate old fashioned non-ANSI preprocessor. */
-
-int traditional;
-
-/* Nonzero for the 1989 C Standard, including corrigenda and amendments. */
-
-int c89;
-
-/* Nonzero for the 1999 C Standard. */
-
-int c99;
-
-/* Nonzero causes output not to be done,
- but directives such as #define that have side effects
- are still obeyed. */
-
-static int no_output;
-
-/* Nonzero means we should look for header.gcc files that remap file names. */
-static int remap;
-
-/* Nonzero means this file was included with a -imacros or -include
- command line and should not be recorded as an include file. */
-
-static int no_record_file;
-
-/* Nonzero means that we have finished processing the command line options.
- This flag is used to decide whether or not to issue certain errors
- and/or warnings. */
-
-static int done_initializing = 0;
-
-/* Line where a newline was first seen in a string constant. */
-
-static int multiline_string_line = 0;
-\f
-/* I/O buffer structure.
- The `fname' field is nonzero for source files and #include files
- and for the dummy text used for -D and -U.
- It is zero for rescanning results of macro expansion
- and for expanding macro arguments. */
-#define INPUT_STACK_MAX 400
-static struct file_buf {
- const char *fname;
- /* Filename specified with #line directive. */
- const char *nominal_fname;
- /* The length of nominal_fname, which may contain embedded NULs. */
- size_t nominal_fname_len;
- /* Include file description. */
- struct include_file *inc;
- /* Record where in the search path this file was found.
- For #include_next. */
- struct file_name_list *dir;
- int lineno;
- int length;
- U_CHAR *buf;
- U_CHAR *bufp;
- /* Macro that this level is the expansion of.
- Included so that we can reenable the macro
- at the end of this level. */
- struct hashnode *macro;
- /* Value of if_stack at start of this file.
- Used to prohibit unmatched #endif (etc) in an include file. */
- struct if_stack *if_stack;
- /* Object to be freed at end of input at this level. */
- U_CHAR *free_ptr;
- /* True if this is a system header file; see is_system_include. */
- char system_header_p;
-} instack[INPUT_STACK_MAX];
-
-static int last_error_tick; /* Incremented each time we print it. */
-static int input_file_stack_tick; /* Incremented when the status changes. */
-
-/* Current nesting level of input sources.
- `instack[indepth]' is the level currently being read. */
-static int indepth = -1;
-#define CHECK_DEPTH(code) \
- if (indepth >= (INPUT_STACK_MAX - 1)) \
- { \
- error_with_line (line_for_error (instack[indepth].lineno), \
- "macro or `#include' recursion too deep"); \
- code; \
- }
-
-/* Current depth in #include directives that use <...>. */
-static int system_include_depth = 0;
-
-typedef struct file_buf FILE_BUF;
-
-/* The output buffer. Its LENGTH field is the amount of room allocated
- for the buffer, not the number of chars actually present. To get
- that, subtract outbuf.buf from outbuf.bufp. */
-
-#define OUTBUF_SIZE 10 /* initial size of output buffer */
-static FILE_BUF outbuf;
-
-/* Grow output buffer OBUF points at
- so it can hold at least NEEDED more chars. */
-
-#define check_expand(OBUF, NEEDED) \
- (((OBUF)->length - ((OBUF)->bufp - (OBUF)->buf) <= (NEEDED)) \
- ? grow_outbuf ((OBUF), (NEEDED)) : 0)
-
-struct file_name_list
- {
- struct file_name_list *next;
- /* If the following is 1, it is a C-language system include
- directory. */
- int c_system_include_path;
- /* Mapping of file names for this directory. */
- struct file_name_map *name_map;
- /* Non-zero if name_map is valid. */
- int got_name_map;
- /* The include directory status. */
- struct stat st;
- /* The include prefix: "" denotes the working directory,
- otherwise fname must end in '/'.
- The actual size is dynamically allocated. */
- char fname[1];
- };
-
-/* #include "file" looks in source file dir, then stack. */
-/* #include <file> just looks in the stack. */
-/* -I directories are added to the end, then the defaults are added. */
-/* The */
-static struct default_include {
- const char *fname; /* The name of the directory. */
- const char *component; /* The component containing the directory */
- int cplusplus; /* Only look here if we're compiling C++. */
- int cxx_aware; /* Includes in this directory don't need to
- be wrapped in extern "C" when compiling
- C++. */
- int included; /* Set if the directory is acceptable. */
-} include_defaults_array[]
-#ifdef INCLUDE_DEFAULTS
- = INCLUDE_DEFAULTS;
-#else
- = {
- /* Pick up GNU C++ specific include files. */
- { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, 0 },
-#ifdef CROSS_COMPILE
- /* This is the dir for fixincludes. Put it just before
- the files that we fix. */
- { GCC_INCLUDE_DIR, "GCC", 0, 0, 0 },
- /* For cross-compilation, this dir name is generated
- automatically in Makefile.in. */
- { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0 },
-#ifdef TOOL_INCLUDE_DIR
- /* This is another place that the target system's headers might be. */
- { TOOL_INCLUDE_DIR, "BINUTILS", 0, 0, 0 },
-#endif
-#else /* not CROSS_COMPILE */
-#ifdef LOCAL_INCLUDE_DIR
- /* This should be /usr/local/include and should come before
- the fixincludes-fixed header files. */
- { LOCAL_INCLUDE_DIR, 0, 0, 1, 0 },
-#endif
-#ifdef TOOL_INCLUDE_DIR
- /* This is here ahead of GCC_INCLUDE_DIR because assert.h goes here.
- Likewise, behind LOCAL_INCLUDE_DIR, where glibc puts its assert.h. */
- { TOOL_INCLUDE_DIR, "BINUTILS", 0, 0, 0 },
-#endif
- /* This is the dir for fixincludes. Put it just before
- the files that we fix. */
- { GCC_INCLUDE_DIR, "GCC", 0, 0, 0 },
- /* Some systems have an extra dir of include files. */
-#ifdef SYSTEM_INCLUDE_DIR
- { SYSTEM_INCLUDE_DIR, 0, 0, 0, 0 },
-#endif
-#ifndef STANDARD_INCLUDE_COMPONENT
-#define STANDARD_INCLUDE_COMPONENT 0
-#endif
- { STANDARD_INCLUDE_DIR, STANDARD_INCLUDE_COMPONENT, 0, 0, 0 },
-#endif /* not CROSS_COMPILE */
- { 0, 0, 0, 0, 0 }
- };
-#endif /* no INCLUDE_DEFAULTS */
-
-/* The code looks at the defaults through this pointer, rather than through
- the constant structure above. This pointer gets changed if an environment
- variable specifies other defaults. */
-static struct default_include *include_defaults = include_defaults_array;
-
-static struct file_name_list *include = 0; /* First dir to search */
- /* First dir to search for <file> */
-/* This is the first element to use for #include <...>.
- If it is 0, use the entire chain for such includes. */
-static struct file_name_list *first_bracket_include = 0;
-/* This is the first element in the chain that corresponds to
- a directory of system header files. */
-static struct file_name_list *first_system_include = 0;
-static struct file_name_list *last_include = 0; /* Last in chain */
-
-/* Chain of include directories to put at the end of the other chain. */
-static struct file_name_list *after_include = 0;
-static struct file_name_list *last_after_include = 0; /* Last in chain */
-
-/* Chain to put at the start of the system include files. */
-static struct file_name_list *before_system = 0;
-static struct file_name_list *last_before_system = 0; /* Last in chain */
-
-/* Directory prefix that should replace `/usr' in the standard
- include file directories. */
-static char *include_prefix;
-
-/* Maintain and search list of included files. */
-
-struct include_file {
- struct include_file *next; /* for include_hashtab */
- struct include_file *next_ino; /* for include_ino_hashtab */
- char *fname;
- /* If the following is the empty string, it means #pragma once
- was seen in this include file, or #import was applied to the file.
- Otherwise, if it is nonzero, it is a macro name.
- Don't include the file again if that macro is defined. */
- const U_CHAR *control_macro;
- /* Nonzero if the dependency on this include file has been output. */
- int deps_output;
- struct stat st;
-};
-
-/* Hash tables of files already included with #include or #import.
- include_hashtab is by full name; include_ino_hashtab is by inode number. */
-
-#define INCLUDE_HASHSIZE 61
-static struct include_file *include_hashtab[INCLUDE_HASHSIZE];
-static struct include_file *include_ino_hashtab[INCLUDE_HASHSIZE];
-
-/* Global list of strings read in from precompiled files. This list
- is kept in the order the strings are read in, with new strings being
- added at the end through stringlist_tailp. We use this list to output
- the strings at the end of the run.
-*/
-static STRINGDEF *stringlist;
-static STRINGDEF **stringlist_tailp = &stringlist;
-
-
-/* Structure returned by create_definition */
-typedef struct macrodef MACRODEF;
-struct macrodef
-{
- struct definition *defn;
- const U_CHAR *symnam;
- int symlen;
-};
-\f
-enum sharp_token_type {
- NO_SHARP_TOKEN = 0, /* token not present */
-
- SHARP_TOKEN = '#', /* token spelled with # only */
- WHITE_SHARP_TOKEN, /* token spelled with # and white space */
-
- PERCENT_COLON_TOKEN = '%', /* token spelled with %: only */
- WHITE_PERCENT_COLON_TOKEN /* token spelled with %: and white space */
-};
-
-/* Structure allocated for every #define. For a simple replacement
- such as
- #define foo bar ,
- nargs = -1, the `pattern' list is null, and the expansion is just
- the replacement text. Nargs = 0 means a functionlike macro with no args,
- e.g.,
- #define getchar() getc (stdin) .
- When there are args, the expansion is the replacement text with the
- args squashed out, and the reflist is a list describing how to
- build the output from the input: e.g., "3 chars, then the 1st arg,
- then 9 chars, then the 3rd arg, then 0 chars, then the 2nd arg".
- The chars here come from the expansion. Whatever is left of the
- expansion after the last arg-occurrence is copied after that arg.
- Note that the reflist can be arbitrarily long---
- its length depends on the number of times the arguments appear in
- the replacement text, not how many args there are. Example:
- #define f(x) x+x+x+x+x+x+x would have replacement text "++++++" and
- pattern list
- { (0, 1), (1, 1), (1, 1), ..., (1, 1), NULL }
- where (x, y) means (nchars, argno). */
-
-typedef struct definition DEFINITION;
-struct definition {
- int nargs;
- int length; /* length of expansion string */
- int predefined; /* True if the macro was builtin or */
- /* came from the command line */
- U_CHAR *expansion;
- int line; /* Line number of definition */
- const char *file; /* File of definition */
- size_t file_len; /* Length of file (which can contain NULs) */
- char rest_args; /* Nonzero if last arg. absorbs the rest */
- struct reflist {
- struct reflist *next;
-
- enum sharp_token_type stringify; /* set if a # operator before arg */
- enum sharp_token_type raw_before; /* set if a ## operator before arg */
- enum sharp_token_type raw_after; /* set if a ## operator after arg */
-
- char rest_args; /* Nonzero if this arg. absorbs the rest */
- int nchars; /* Number of literal chars to copy before
- this arg occurrence. */
- int argno; /* Number of arg to substitute (origin-0) */
- } *pattern;
- union {
- /* Names of macro args, concatenated in reverse order
- with comma-space between them.
- The only use of this is that we warn on redefinition
- if this differs between the old and new definitions. */
- U_CHAR *argnames;
- } args;
-};
-
-/* different kinds of things that can appear in the value field
- of a hash node. Actually, this may be useless now. */
-union hashval {
- const char *cpval;
- DEFINITION *defn;
- KEYDEF *keydef;
-};
-
-/*
- * special extension string that can be added to the last macro argument to
- * allow it to absorb the "rest" of the arguments when expanded. Ex:
- * #define wow(a, b...) process (b, a, b)
- * { wow (1, 2, 3); } -> { process (2, 3, 1, 2, 3); }
- * { wow (one, two); } -> { process (two, one, two); }
- * if this "rest_arg" is used with the concat token '##' and if it is not
- * supplied then the token attached to with ## will not be outputted. Ex:
- * #define wow (a, b...) process (b ## , a, ## b)
- * { wow (1, 2); } -> { process (2, 1, 2); }
- * { wow (one); } -> { process (one); {
- */
-static char rest_extension[] = "...";
-#define REST_EXTENSION_LENGTH (sizeof (rest_extension) - 1)
-
-/* This is the implicit parameter name when using variable number of
- parameters for macros using the ISO C 99 extension. */
-static char va_args_name[] = "__VA_ARGS__";
-#define VA_ARGS_NAME_LENGTH (sizeof (va_args_name) - 1)
-
-/* The structure of a node in the hash table. The hash table
- has entries for all tokens defined by #define directives (type T_MACRO),
- plus some special tokens like __LINE__ (these each have their own
- type, and the appropriate code is run when that type of node is seen.
- It does not contain control words like "#define", which are recognized
- by a separate piece of code. */
-
-/* different flavors of hash nodes --- also used in keyword table */
-enum node_type {
- T_DEFINE = 1, /* the `#define' keyword */
- T_INCLUDE, /* the `#include' keyword */
- T_INCLUDE_NEXT, /* the `#include_next' keyword */
- T_IMPORT, /* the `#import' keyword */
- T_IFDEF, /* the `#ifdef' keyword */
- T_IFNDEF, /* the `#ifndef' keyword */
- T_IF, /* the `#if' keyword */
- T_ELSE, /* `#else' */
- T_PRAGMA, /* `#pragma' */
- T_ELIF, /* `#elif' */
- T_UNDEF, /* `#undef' */
- T_LINE, /* `#line' */
- T_ERROR, /* `#error' */
- T_WARNING, /* `#warning' */
- T_ENDIF, /* `#endif' */
- T_SCCS, /* `#sccs', used on system V. */
- T_IDENT, /* `#ident', used on system V. */
- T_ASSERT, /* `#assert', taken from system V. */
- T_UNASSERT, /* `#unassert', taken from system V. */
- T_SPECLINE, /* special symbol `__LINE__' */
- T_DATE, /* `__DATE__' */
- T_FILE, /* `__FILE__' */
- T_BASE_FILE, /* `__BASE_FILE__' */
- T_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
- T_VERSION, /* `__VERSION__' */
- T_SIZE_TYPE, /* `__SIZE_TYPE__' */
- T_PTRDIFF_TYPE, /* `__PTRDIFF_TYPE__' */
- T_WCHAR_TYPE, /* `__WCHAR_TYPE__' */
- T_USER_LABEL_PREFIX_TYPE, /* `__USER_LABEL_PREFIX__' */
- T_REGISTER_PREFIX_TYPE, /* `__REGISTER_PREFIX__' */
- T_IMMEDIATE_PREFIX_TYPE, /* `__IMMEDIATE_PREFIX__' */
- T_TIME, /* `__TIME__' */
- T_CONST, /* Constant value, used by `__STDC__' */
- T_MACRO, /* macro defined by `#define' */
- T_DISABLED, /* macro temporarily turned off for rescan */
- T_SPEC_DEFINED, /* special `defined' macro for use in #if statements */
- T_PCSTRING, /* precompiled string (hashval is KEYDEF *) */
- T_POISON, /* defined with `#pragma poison' */
- T_UNUSED /* Used for something not defined. */
- };
-
-struct hashnode {
- struct hashnode *next; /* double links for easy deletion */
- struct hashnode *prev;
- struct hashnode **bucket_hdr; /* also, a back pointer to this node's hash
- chain is kept, in case the node is the head
- of the chain and gets deleted. */
- enum node_type type; /* type of special token */
- int length; /* length of token, for quick comparison */
- U_CHAR *name; /* the actual name */
- union hashval value; /* pointer to expansion, or whatever */
-};
-
-typedef struct hashnode HASHNODE;
-
-/* Some definitions for the hash table. The hash function MUST be
- computed as shown in hashf () below. That is because the rescan
- loop computes the hash value `on the fly' for most tokens,
- in order to avoid the overhead of a lot of procedure calls to
- the hashf () function. Hashf () only exists for the sake of
- politeness, for use when speed isn't so important. */
-
-#define HASHSIZE 1403
-static HASHNODE *hashtab[HASHSIZE];
-#define HASHSTEP(old, c) ((old << 2) + c)
-#define MAKE_POS(v) (v & 0x7fffffff) /* make number positive */
-
-\f
-/* We let tm.h override the types used here, to handle trivial differences
- such as the choice of unsigned int or long unsigned int for size_t.
- When machines start needing nontrivial differences in the size type,
- it would be best to do something here to figure out automatically
- from other information what type to use. */
-
-/* The string value for __SIZE_TYPE__. */
-
-#ifndef SIZE_TYPE
-#define SIZE_TYPE "long unsigned int"
-#endif
-
-/* The string value for __PTRDIFF_TYPE__. */
-
-#ifndef PTRDIFF_TYPE
-#define PTRDIFF_TYPE "long int"
-#endif
-
-/* The string value for __WCHAR_TYPE__. */
-
-#ifndef WCHAR_TYPE
-#define WCHAR_TYPE "int"
-#endif
-static const char * wchar_type = WCHAR_TYPE;
-#undef WCHAR_TYPE
-
-/* The string value for __USER_LABEL_PREFIX__ */
-
-#ifndef USER_LABEL_PREFIX
-#define USER_LABEL_PREFIX ""
-#endif
-static const char * user_label_prefix = USER_LABEL_PREFIX;
-#undef USER_LABEL_PREFIX
-
-/* The string value for __REGISTER_PREFIX__ */
-
-#ifndef REGISTER_PREFIX
-#define REGISTER_PREFIX ""
-#endif
-
-/* The string value for __IMMEDIATE_PREFIX__ */
-
-#ifndef IMMEDIATE_PREFIX
-#define IMMEDIATE_PREFIX ""
-#endif
-\f
-/* In the definition of a #assert name, this structure forms
- a list of the individual values asserted.
- Each value is itself a list of "tokens".
- These are strings that are compared by name. */
-
-struct tokenlist_list {
- struct tokenlist_list *next;
- struct arglist *tokens;
-};
-
-struct assertion_hashnode {
- struct assertion_hashnode *next; /* double links for easy deletion */
- struct assertion_hashnode *prev;
- /* also, a back pointer to this node's hash
- chain is kept, in case the node is the head
- of the chain and gets deleted. */
- struct assertion_hashnode **bucket_hdr;
- int length; /* length of token, for quick comparison */
- U_CHAR *name; /* the actual name */
- /* List of token-sequences. */
- struct tokenlist_list *value;
-};
-
-typedef struct assertion_hashnode ASSERTION_HASHNODE;
-
-/* Some definitions for the hash table. The hash function MUST be
- computed as shown in hashf below. That is because the rescan
- loop computes the hash value `on the fly' for most tokens,
- in order to avoid the overhead of a lot of procedure calls to
- the hashf function. hashf only exists for the sake of
- politeness, for use when speed isn't so important. */
-
-#define ASSERTION_HASHSIZE 37
-static ASSERTION_HASHNODE *assertion_hashtab[ASSERTION_HASHSIZE];
-
-/* Nonzero means inhibit macroexpansion of what seem to be
- assertion tests, in rescan. For #if. */
-static int assertions_flag;
-\f
-/* `struct directive' defines one #-directive, including how to handle it. */
-
-#define DO_PROTO PARAMS ((U_CHAR *, U_CHAR *, FILE_BUF *, struct directive *))
-
-struct directive {
- int length; /* Length of name */
- int (*func) DO_PROTO; /* Function to handle directive */
- const char *name; /* Name of directive */
- enum node_type type; /* Code which describes which directive. */
-};
-
-#define IS_INCLUDE_DIRECTIVE_TYPE(t) \
-((int) T_INCLUDE <= (int) (t) && (int) (t) <= (int) T_IMPORT)
-
-/* These functions are declared to return int instead of void since they
- are going to be placed in the table and some old compilers have trouble with
- pointers to functions returning void. */
-
-static int do_assert DO_PROTO;
-static int do_define DO_PROTO;
-static int do_elif DO_PROTO;
-static int do_else DO_PROTO;
-static int do_endif DO_PROTO;
-static int do_error DO_PROTO;
-static int do_ident DO_PROTO;
-static int do_if DO_PROTO;
-static int do_include DO_PROTO;
-static int do_line DO_PROTO;
-static int do_pragma DO_PROTO;
-#ifdef SCCS_DIRECTIVE
-static int do_sccs DO_PROTO;
-#endif
-static int do_unassert DO_PROTO;
-static int do_undef DO_PROTO;
-static int do_xifdef DO_PROTO;
-
-/* Here is the actual list of #-directives, most-often-used first. */
-
-static struct directive directive_table[] = {
- { 6, do_define, "define", T_DEFINE},
- { 2, do_if, "if", T_IF},
- { 5, do_xifdef, "ifdef", T_IFDEF},
- { 6, do_xifdef, "ifndef", T_IFNDEF},
- { 5, do_endif, "endif", T_ENDIF},
- { 4, do_else, "else", T_ELSE},
- { 4, do_elif, "elif", T_ELIF},
- { 4, do_line, "line", T_LINE},
- { 7, do_include, "include", T_INCLUDE},
- { 12, do_include, "include_next", T_INCLUDE_NEXT},
- { 6, do_include, "import", T_IMPORT},
- { 5, do_undef, "undef", T_UNDEF},
- { 5, do_error, "error", T_ERROR},
- { 7, do_error, "warning", T_WARNING},
-#ifdef SCCS_DIRECTIVE
- { 4, do_sccs, "sccs", T_SCCS},
-#endif
- { 6, do_pragma, "pragma", T_PRAGMA},
- { 5, do_ident, "ident", T_IDENT},
- { 6, do_assert, "assert", T_ASSERT},
- { 8, do_unassert, "unassert", T_UNASSERT},
- { -1, 0, "", T_UNUSED},
-};
-
-/* When a directive handler is called,
- this points to the # (or the : of the %:) that started the directive. */
-U_CHAR *directive_start;
-
-/* table to tell if char can be part of a C identifier. */
-U_CHAR is_idchar[256];
-/* table to tell if char can be first char of a c identifier. */
-U_CHAR is_idstart[256];
-/* table to tell if c is horizontal space. */
-static U_CHAR is_hor_space[256];
-/* table to tell if c is horizontal or vertical space. */
-U_CHAR is_space[256];
-
-#define SKIP_WHITE_SPACE(p) do { while (is_hor_space[*p]) p++; } while (0)
-#define SKIP_ALL_WHITE_SPACE(p) do { while (is_space[*p]) p++; } while (0)
-
-static int errors = 0; /* Error counter for exit code */
-
-/* Name of output file, for error messages. */
-static const char *out_fname;
-
-/* Nonzero to ignore \ in string constants. Use to treat #line 1 "A:\file.h
- as a non-form feed. If you want it to be a form feed, you must use
- # 1 "\f". */
-static int ignore_escape_flag = 1;
-
-/* Stack of conditionals currently in progress
- (including both successful and failing conditionals). */
-
-struct if_stack {
- struct if_stack *next; /* for chaining to the next stack frame */
- const char *fname; /* copied from input when frame is made */
- size_t fname_len; /* similarly */
- int lineno; /* similarly */
- int if_succeeded; /* true if a leg of this if-group
- has been passed through rescan */
- const U_CHAR *control_macro; /* For #ifndef at start of file,
- this is the macro name tested. */
- enum node_type type; /* type of last directive seen in this group */
-};
-typedef struct if_stack IF_STACK_FRAME;
-static IF_STACK_FRAME *if_stack = NULL;
-
-/* Buffer of -M output. */
-static char *deps_buffer;
-
-/* Number of bytes allocated in above. */
-static int deps_allocated_size;
-
-/* Number of bytes used. */
-static int deps_size;
-
-/* Number of bytes since the last newline. */
-static int deps_column;
-
-/* Nonzero means -I- has been seen,
- so don't look for #include "foo" the source-file directory. */
-static int ignore_srcdir;
-\f
-static int safe_read PARAMS ((int, char *, int));
-static void safe_write PARAMS ((int, const char *, int));
-
-int main PARAMS ((int, char **));
-
-static void path_include PARAMS ((char *));
-
-static const U_CHAR *index0 PARAMS ((const U_CHAR *, int, size_t));
-
-static void trigraph_pcp PARAMS ((FILE_BUF *));
-static void check_white_space PARAMS ((FILE_BUF *));
-
-static void newline_fix PARAMS ((U_CHAR *));
-static void name_newline_fix PARAMS ((U_CHAR *));
-
-static const char *get_lintcmd PARAMS ((const U_CHAR *, const U_CHAR *,
- const U_CHAR **, int *, int *));
-
-static void rescan PARAMS ((FILE_BUF *, int));
-
-static FILE_BUF expand_to_temp_buffer PARAMS ((const U_CHAR *, const U_CHAR *,
- int, int));
-
-static int handle_directive PARAMS ((FILE_BUF *, FILE_BUF *));
-
-static struct tm *timestamp PARAMS ((void));
-static void special_symbol PARAMS ((HASHNODE *, FILE_BUF *));
-
-static int is_system_include PARAMS ((const char *));
-static char *base_name PARAMS ((const char *));
-static int absolute_filename PARAMS ((const char *));
-static size_t simplify_filename PARAMS ((char *));
-
-static char *read_filename_string PARAMS ((int, FILE *));
-static struct file_name_map *read_name_map PARAMS ((const char *));
-static int open_include_file PARAMS ((char *, struct file_name_list *,
- const U_CHAR *, struct include_file **));
-static char *remap_include_file PARAMS ((char *, struct file_name_list *));
-static int lookup_ino_include PARAMS ((struct include_file *));
-
-static void finclude PARAMS ((int, struct include_file *, FILE_BUF *, int,
- struct file_name_list *));
-static void record_control_macro PARAMS ((struct include_file *,
- const U_CHAR *));
-
-static char *check_precompiled PARAMS ((int, struct stat *, const char *,
- const char **));
-static int check_preconditions PARAMS ((const char *));
-static void pcfinclude PARAMS ((U_CHAR *, const U_CHAR *, FILE_BUF *));
-static void pcstring_used PARAMS ((HASHNODE *));
-static void write_output PARAMS ((void));
-static void pass_thru_directive PARAMS ((const U_CHAR *, const U_CHAR *,
- FILE_BUF *, struct directive *));
-
-static MACRODEF create_definition PARAMS ((const U_CHAR *, const U_CHAR *,
- FILE_BUF *));
-
-static int check_macro_name PARAMS ((const U_CHAR *, int));
-static int compare_defs PARAMS ((DEFINITION *, DEFINITION *));
-static int comp_def_part PARAMS ((int, const U_CHAR *, int, const U_CHAR *,
- int, int));
-
-static DEFINITION *collect_expansion PARAMS ((const U_CHAR *, const U_CHAR *,
- int, struct arglist *));
-
-int check_assertion PARAMS ((const U_CHAR *, int, int, struct arglist *));
-static int compare_token_lists PARAMS ((struct arglist *, struct arglist *));
-
-static struct arglist *read_token_list PARAMS ((const U_CHAR **,
- const U_CHAR *, int *));
-static void free_token_list PARAMS ((struct arglist *));
-
-static ASSERTION_HASHNODE *assertion_install PARAMS ((const U_CHAR *, int, int));
-static ASSERTION_HASHNODE *assertion_lookup PARAMS ((const U_CHAR *, int, int));
-static void delete_assertion PARAMS ((ASSERTION_HASHNODE *));
-
-static void do_once PARAMS ((void));
-
-static HOST_WIDEST_INT eval_if_expression PARAMS ((const U_CHAR *, int));
-static void conditional_skip PARAMS ((FILE_BUF *, int, enum node_type,
- const U_CHAR *, FILE_BUF *));
-static void skip_if_group PARAMS ((FILE_BUF *, int, FILE_BUF *));
-static void validate_else PARAMS ((const U_CHAR *, const U_CHAR *));
-
-static U_CHAR *skip_to_end_of_comment PARAMS ((FILE_BUF *, int *, int));
-static U_CHAR *skip_quoted_string PARAMS ((const U_CHAR *, const U_CHAR *,
- int, int *, int *, int *));
-static char *quote_string PARAMS ((char *, const char *, size_t));
-static U_CHAR *skip_paren_group PARAMS ((FILE_BUF *));
-
-/* Last arg to output_line_directive. */
-enum file_change_code {same_file, enter_file, leave_file};
-static void output_line_directive PARAMS ((FILE_BUF *, FILE_BUF *, int, enum file_change_code));
-
-static void macroexpand PARAMS ((HASHNODE *, FILE_BUF *));
-
-struct argdata;
-static int macarg PARAMS ((struct argdata *, int));
-
-static U_CHAR *macarg1 PARAMS ((U_CHAR *, const U_CHAR *, struct hashnode *, int *, int *, int *, int));
-
-static int discard_comments PARAMS ((U_CHAR *, int, int));
-
-static void change_newlines PARAMS ((struct argdata *));
-
-static void notice PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1;
-static void vnotice PARAMS ((const char *, va_list));
-void error PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1;
-void verror PARAMS ((const char *, va_list));
-static void error_from_errno PARAMS ((const char *));
-void warning PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1;
-static void vwarning PARAMS ((const char *, va_list));
-static void error_with_line PARAMS ((int, const char *, ...)) ATTRIBUTE_PRINTF_2;
-static void verror_with_line PARAMS ((int, const char *, va_list));
-static void vwarning_with_line PARAMS ((int, const char *, va_list));
-static void warning_with_line PARAMS ((int, const char *, ...)) ATTRIBUTE_PRINTF_2;
-void pedwarn PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1;
-void pedwarn_with_line PARAMS ((int, const char *, ...)) ATTRIBUTE_PRINTF_2;
-static void pedwarn_with_file_and_line PARAMS ((const char *, size_t, int, const char *, ...)) ATTRIBUTE_PRINTF_4;
-static void pedwarn_strange_white_space PARAMS ((int));
-
-static void print_containing_files PARAMS ((void));
-
-static int line_for_error PARAMS ((int));
-static int grow_outbuf PARAMS ((FILE_BUF *, int));
-
-static HASHNODE *install PARAMS ((const U_CHAR *, int, enum node_type,
- const char *, int));
-HASHNODE *lookup PARAMS ((const U_CHAR *, int, int));
-static void delete_macro PARAMS ((HASHNODE *));
-static int hashf PARAMS ((const U_CHAR *, int, int));
-
-static void dump_single_macro PARAMS ((HASHNODE *, FILE *));
-static void dump_all_macros PARAMS ((void));
-static void dump_defn_1 PARAMS ((const U_CHAR *, int, int, FILE *));
-static void dump_arg_n PARAMS ((DEFINITION *, int, FILE *));
-
-static void initialize_char_syntax PARAMS ((void));
-static void initialize_builtins PARAMS ((FILE_BUF *, FILE_BUF *));
-
-static void make_definition PARAMS ((char *));
-static void make_undef PARAMS ((char *, FILE_BUF *));
-
-static void make_assertion PARAMS ((const char *, const char *));
-
-static struct file_name_list *new_include_prefix PARAMS ((struct file_name_list *, const char *, const char *, const char *));
-static void append_include_chain PARAMS ((struct file_name_list *, struct file_name_list *));
-
-static int quote_string_for_make PARAMS ((char *, const char *));
-static void deps_output PARAMS ((const char *, int));
-
-void fatal PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
-void fancy_abort PARAMS ((void)) ATTRIBUTE_NORETURN;
-static void perror_with_name PARAMS ((const char *));
-static void pfatal_with_name PARAMS ((const char *)) ATTRIBUTE_NORETURN;
-static void pipe_closed PARAMS ((int)) ATTRIBUTE_NORETURN;
-
-static void memory_full PARAMS ((void)) ATTRIBUTE_NORETURN;
-static void print_help PARAMS ((void));
-\f
-/* Read LEN bytes at PTR from descriptor DESC, for file FILENAME,
- retrying if necessary. If MAX_READ_LEN is defined, read at most
- that bytes at a time. Return a negative value if an error occurs,
- otherwise return the actual number of bytes read,
- which must be LEN unless end-of-file was reached. */
-
-static int
-safe_read (desc, ptr, len)
- int desc;
- char *ptr;
- int len;
-{
- int left, rcount, nchars;
-
- left = len;
- while (left > 0) {
- rcount = left;
-#ifdef MAX_READ_LEN
- if (rcount > MAX_READ_LEN)
- rcount = MAX_READ_LEN;
-#endif
- nchars = read (desc, ptr, rcount);
- if (nchars < 0)
- {
-#ifdef EINTR
- if (errno == EINTR)
- continue;
-#endif
- return nchars;
- }
- if (nchars == 0)
- break;
- ptr += nchars;
- left -= nchars;
- }
- return len - left;
-}
-
-/* Write LEN bytes at PTR to descriptor DESC,
- retrying if necessary, and treating any real error as fatal.
- If MAX_WRITE_LEN is defined, write at most that many bytes at a time. */
-
-static void
-safe_write (desc, ptr, len)
- int desc;
- const char *ptr;
- int len;
-{
- int wcount, written;
-
- while (len > 0) {
- wcount = len;
-#ifdef MAX_WRITE_LEN
- if (wcount > MAX_WRITE_LEN)
- wcount = MAX_WRITE_LEN;
-#endif
- written = write (desc, ptr, wcount);
- if (written < 0)
- {
-#ifdef EINTR
- if (errno == EINTR)
- continue;
-#endif
- pfatal_with_name (out_fname);
- }
- ptr += written;
- len -= written;
- }
-}
-
-\f
-static void
-print_help ()
-{
- printf ("Usage: %s [switches] input output\n", progname);
- printf ("Switches:\n");
- printf (" -include <file> Include the contents of <file> before other files\n");
- printf (" -imacros <file> Accept definition of macros in <file>\n");
- printf (" -iprefix <path> Specify <path> as a prefix for next two options\n");
- printf (" -iwithprefix <dir> Add <dir> to the end of the system include paths\n");
- printf (" -iwithprefixbefore <dir> Add <dir> to the end of the main include paths\n");
- printf (" -isystem <dir> Add <dir> to the start of the system include paths\n");
- printf (" -idirafter <dir> Add <dir> to the end of the system include paths\n");
- printf (" -I <dir> Add <dir> to the end of the main include paths\n");
- printf (" -nostdinc Do not search the system include directories\n");
- printf (" -nostdinc++ Do not search the system include directories for C++\n");
- printf (" -o <file> Put output into <file>\n");
- printf (" -pedantic Issue all warnings demanded by strict ANSI C\n");
- printf (" -traditional Follow K&R pre-processor behaviour\n");
- printf (" -trigraphs Support ANSI C trigraphs\n");
- printf (" -lang-c Assume that the input sources are in C\n");
- printf (" -lang-c89 Assume that the input is C89; depricated\n");
- printf (" -lang-c++ Assume that the input sources are in C++\n");
- printf (" -lang-objc Assume that the input sources are in ObjectiveC\n");
- printf (" -lang-objc++ Assume that the input sources are in ObjectiveC++\n");
- printf (" -lang-asm Assume that the input sources are in assembler\n");
- printf (" -lang-fortran Assume that the input sources are in Fortran\n");
- printf (" -lang-chill Assume that the input sources are in Chill\n");
- printf (" -std=<std name> Specify the conformance standard; one of:\n");
- printf (" gnu89, gnu99, c89, c99, iso9899:1990,\n");
- printf (" iso9899:199409, iso9899:1999\n");
- printf (" -+ Allow parsing of C++ style features\n");
- printf (" -w Inhibit warning messages\n");
- printf (" -Wtrigraphs Warn if trigraphs are encountered\n");
- printf (" -Wno-trigraphs Do not warn about trigraphs\n");
- printf (" -Wcomment{s} Warn if one comment starts inside another\n");
- printf (" -Wno-comment{s} Do not warn about comments\n");
- printf (" -Wtraditional Warn if a macro argument is/would be turned into\n");
- printf (" a string if -traditional is specified\n");
- printf (" -Wno-traditional Do not warn about stringification\n");
- printf (" -Wundef Warn if an undefined macro is used by #if\n");
- printf (" -Wno-undef Do not warn about testing undefined macros\n");
- printf (" -Wimport Warn about the use of the #import directive\n");
- printf (" -Wno-import Do not warn about the use of #import\n");
- printf (" -Werror Treat all warnings as errors\n");
- printf (" -Wno-error Do not treat warnings as errors\n");
- printf (" -Wall Enable all preprocessor warnings\n");
- printf (" -M Generate make dependencies\n");
- printf (" -MM As -M, but ignore system header files\n");
- printf (" -MD As -M, but put output in a .d file\n");
- printf (" -MMD As -MD, but ignore system header files\n");
- printf (" -MG Treat missing header file as generated files\n");
- printf (" -g Include #define and #undef directives in the output\n");
- printf (" -D<macro> Define a <macro> with string '1' as its value\n");
- printf (" -D<macro>=<val> Define a <macro> with <val> as its value\n");
- printf (" -A<question> (<answer>) Assert the <answer> to <question>\n");
- printf (" -U<macro> Undefine <macro> \n");
- printf (" -u or -undef Do not predefine any macros\n");
- printf (" -v Display the version number\n");
- printf (" -H Print the name of header files as they are used\n");
- printf (" -C Do not discard comments\n");
- printf (" -dM Display a list of macro definitions active at end\n");
- printf (" -dD Preserve macro definitions in output\n");
- printf (" -dN As -dD except that only the names are preserved\n");
- printf (" -dI Include #include directives in the output\n");
- printf (" -ifoutput Describe skipped code blocks in output \n");
- printf (" -P Do not generate #line directives\n");
- printf (" -$ Do not include '$' in identifiers\n");
- printf (" -remap Remap file names when including files.\n");
- printf (" -h or --help Display this information\n");
-}
-\f
-int
-main (argc, argv)
- int argc;
- char **argv;
-{
- struct stat st;
- const char *in_fname;
- char *cp;
- int f, i;
- FILE_BUF *fp;
-
- char **pend_files;
- char **pend_defs;
- char **pend_undefs;
- char **pend_assertions;
- char **pend_includes;
-
- /* Record the option used with each element of pend_assertions.
- This is preparation for supporting more than one option for making
- an assertion. */
- const char **pend_assertion_options;
- int no_standard_includes = 0;
- int no_standard_cplusplus_includes = 0;
- int missing_newline = 0;
-
- /* Non-0 means don't output the preprocessed program. */
- int inhibit_output = 0;
- /* Non-0 means -v, so print the full set of include dirs. */
- int verbose = 0;
-
- /* File name which deps are being written to.
- This is 0 if deps are being written to stdout. */
- char *deps_file = 0;
- /* Fopen file mode to open deps_file with. */
- const char *deps_mode = "a";
- /* Stream on which to print the dependency information. */
- FILE *deps_stream = 0;
- /* Target-name to write with the dependency information. */
- char *deps_target = 0;
-
-#if defined (RLIMIT_STACK) && defined (HAVE_GETRLIMIT) && defined (HAVE_SETRLIMIT)
- /* Get rid of any avoidable limit on stack size. */
- {
- struct rlimit rlim;
-
- /* Set the stack limit huge so that alloca (particularly stringtab
- in dbxread.c) does not fail. */
- getrlimit (RLIMIT_STACK, &rlim);
- rlim.rlim_cur = rlim.rlim_max;
- setrlimit (RLIMIT_STACK, &rlim);
- }
-#endif
-
-#ifdef SIGPIPE
- signal (SIGPIPE, pipe_closed);
-#endif
-
-#ifdef HAVE_LC_MESSAGES
- setlocale (LC_MESSAGES, "");
-#endif
- (void) bindtextdomain (PACKAGE, localedir);
- (void) textdomain (PACKAGE);
-
- progname = base_name (argv[0]);
-
-#ifdef VMS
- {
- /* Remove extension from PROGNAME. */
- char *p;
- char *s = xstrdup (progname);
- progname = s;
-
- if ((p = rindex (s, ';')) != 0) *p = '\0'; /* strip version number */
- if ((p = rindex (s, '.')) != 0 /* strip type iff ".exe" */
- && (p[1] == 'e' || p[1] == 'E')
- && (p[2] == 'x' || p[2] == 'X')
- && (p[3] == 'e' || p[3] == 'E')
- && !p[4])
- *p = '\0';
- }
-#endif
-
- /* Do not invoke xmalloc before this point, since locale and
- progname need to be set first, in case a diagnostic is issued. */
-
- pend_files = (char **) xmalloc (argc * sizeof (char *));
- pend_defs = (char **) xmalloc ((2 * argc) * sizeof (char *));
- pend_undefs = (char **) xmalloc (argc * sizeof (char *));
- pend_assertions = (char **) xmalloc (argc * sizeof (char *));
- pend_includes = (char **) xmalloc (argc * sizeof (char *));
- pend_assertion_options = (const char **) xmalloc (argc * sizeof (char *));
-
- in_fname = NULL;
- out_fname = NULL;
-
- /* Initialize is_idchar. */
- initialize_char_syntax ();
-
- no_line_directives = 0;
- no_trigraphs = 1;
- dump_macros = dump_none;
- no_output = 0;
- cplusplus = 0;
- cplusplus_comments = 1;
-
- bzero ((char *) pend_files, argc * sizeof (char *));
- bzero ((char *) pend_defs, (2 * argc) * sizeof (char *));
- bzero ((char *) pend_undefs, argc * sizeof (char *));
- bzero ((char *) pend_assertions, argc * sizeof (char *));
- bzero ((char *) pend_includes, argc * sizeof (char *));
-
-#ifdef MULTIBYTE_CHARS
- /* Change to the native locale for multibyte conversions. */
- setlocale (LC_CTYPE, "");
- literal_codeset = getenv ("LANG");
-#endif
-
- /* Process switches and find input file name. */
-
- for (i = 1; i < argc; i++) {
- if (argv[i][0] != '-') {
- if (out_fname != NULL)
- {
- print_help ();
- fatal ("Too many arguments");
- }
- else if (in_fname != NULL)
- out_fname = argv[i];
- else
- in_fname = argv[i];
- } else {
- switch (argv[i][1]) {
-
- case 'i':
- if (!strcmp (argv[i], "-include")) {
- if (i + 1 == argc)
- fatal ("Filename missing after `-include' option");
- else {
- i++;
- simplify_filename (pend_includes[i] = argv[i]);
- }
- }
- if (!strcmp (argv[i], "-imacros")) {
- if (i + 1 == argc)
- fatal ("Filename missing after `-imacros' option");
- else {
- i++;
- simplify_filename (pend_files[i] = argv[i]);
- }
- }
- if (!strcmp (argv[i], "-iprefix")) {
- if (i + 1 == argc)
- fatal ("Filename missing after `-iprefix' option");
- else
- include_prefix = argv[++i];
- }
- if (!strcmp (argv[i], "-ifoutput")) {
- output_conditionals = 1;
- }
- if (!strcmp (argv[i], "-isystem")) {
- struct file_name_list *dirtmp;
-
- if (! (dirtmp = new_include_prefix (NULL_PTR, NULL_PTR,
- "", argv[++i])))
- break;
- dirtmp->c_system_include_path = 1;
-
- if (before_system == 0)
- before_system = dirtmp;
- else
- last_before_system->next = dirtmp;
- last_before_system = dirtmp; /* Tail follows the last one */
- }
- /* Add directory to end of path for includes,
- with the default prefix at the front of its name. */
- if (!strcmp (argv[i], "-iwithprefix")) {
- struct file_name_list *dirtmp;
- char *prefix;
-
- if (include_prefix != 0)
- prefix = include_prefix;
- else {
- prefix = xstrdup (GCC_INCLUDE_DIR);
- /* Remove the `include' from /usr/local/lib/gcc.../include. */
- if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
- prefix[strlen (prefix) - 7] = 0;
- }
-
- if (! (dirtmp = new_include_prefix (NULL_PTR, NULL_PTR,
- prefix, argv[++i])))
- break;
-
- if (after_include == 0)
- after_include = dirtmp;
- else
- last_after_include->next = dirtmp;
- last_after_include = dirtmp; /* Tail follows the last one */
- }
- /* Add directory to main path for includes,
- with the default prefix at the front of its name. */
- if (!strcmp (argv[i], "-iwithprefixbefore")) {
- struct file_name_list *dirtmp;
- char *prefix;
-
- if (include_prefix != 0)
- prefix = include_prefix;
- else {
- prefix = xstrdup (GCC_INCLUDE_DIR);
- /* Remove the `include' from /usr/local/lib/gcc.../include. */
- if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
- prefix[strlen (prefix) - 7] = 0;
- }
-
- dirtmp = new_include_prefix (NULL_PTR, NULL_PTR, prefix, argv[++i]);
- append_include_chain (dirtmp, dirtmp);
- }
- /* Add directory to end of path for includes. */
- if (!strcmp (argv[i], "-idirafter")) {
- struct file_name_list *dirtmp;
-
- if (! (dirtmp = new_include_prefix (NULL_PTR, NULL_PTR,
- "", argv[++i])))
- break;
-
- if (after_include == 0)
- after_include = dirtmp;
- else
- last_after_include->next = dirtmp;
- last_after_include = dirtmp; /* Tail follows the last one */
- }
- break;
-
- case 'o':
- if (out_fname != NULL)
- fatal ("Output filename specified twice");
- if (i + 1 == argc)
- fatal ("Filename missing after -o option");
- out_fname = argv[++i];
- if (!strcmp (out_fname, "-"))
- out_fname = "";
- break;
-
- case 'p':
- if (!strcmp (argv[i], "-pedantic"))
- pedantic = 1;
- else if (!strcmp (argv[i], "-pedantic-errors")) {
- pedantic = 1;
- pedantic_errors = 1;
- } else if (!strcmp (argv[i], "-pcp")) {
- char *pcp_fname;
- if (i + 1 == argc)
- fatal ("Filename missing after -pcp option");
- pcp_fname = argv[++i];
- pcp_outfile
- = ((pcp_fname[0] != '-' || pcp_fname[1] != '\0')
- ? fopen (pcp_fname, "w")
- : stdout);
- if (pcp_outfile == 0)
- pfatal_with_name (pcp_fname);
- no_precomp = 1;
- }
- break;
-
- case 't':
- if (!strcmp (argv[i], "-traditional")) {
- traditional = 1;
- cplusplus_comments = 0;
- } else if (!strcmp (argv[i], "-trigraphs")) {
- no_trigraphs = 0;
- }
- break;
-
- case 'l':
- if (! strcmp (argv[i], "-lang-c"))
- cplusplus = 0, cplusplus_comments = 1, c89 = 0, c99 = 1, objc = 0;
- else if (! strcmp (argv[i], "-lang-c89"))
- {
- cplusplus = 0, cplusplus_comments = 0, c89 = 1, c99 = 0, objc = 0;
- no_trigraphs = 0;
- pend_defs[2*i] = "__STRICT_ANSI__";
- }
- else if (! strcmp (argv[i], "-lang-c++"))
- cplusplus = 1, cplusplus_comments = 1, c89 = 0, c99 = 0, objc = 0;
- else if (! strcmp (argv[i], "-lang-objc"))
- cplusplus = 0, cplusplus_comments = 1, c89 = 0, c99 = 0, objc = 1;
- else if (! strcmp (argv[i], "-lang-objc++"))
- cplusplus = 1, cplusplus_comments = 1, c89 = 0, c99 = 0, objc = 1;
- else if (! strcmp (argv[i], "-lang-asm"))
- lang_asm = 1;
- else if (! strcmp (argv[i], "-lang-fortran"))
- /* Doesn't actually do anything. */ ;
- else if (! strcmp (argv[i], "-lint"))
- for_lint = 1;
- break;
-
- case '+':
- cplusplus = 1, cplusplus_comments = 1;
- break;
-
- case 's':
- if (!strcmp (argv[i], "-std=gnu89"))
- {
- cplusplus = 0, cplusplus_comments = 0, c89 = 1, c99 = 0, objc = 0;
- }
- else if (!strcmp (argv[i], "-std=gnu9x")
- || !strcmp (argv[i], "-std=gnu99"))
- {
- cplusplus = 0, cplusplus_comments = 1, c89 = 0, c99 = 1, objc = 0;
- pend_defs[2*i+1] = "__STDC_VERSION__=199901L";
- }
- else if (!strcmp (argv[i], "-std=iso9899:1990")
- || !strcmp (argv[i], "-std=c89"))
- {
- cplusplus = 0, cplusplus_comments = 0, c89 = 1, c99 = 0, objc = 0;
- no_trigraphs = 0;
- pend_defs[2*i] = "__STRICT_ANSI__";
- }
- else if (!strcmp (argv[i], "-std=iso9899:199409"))
- {
- cplusplus = 0, cplusplus_comments = 0, c89 = 1, c99 = 0, objc = 0;
- no_trigraphs = 0;
- pend_defs[2*i] = "__STRICT_ANSI__";
- pend_defs[2*i+1] = "__STDC_VERSION__=199409L";
- }
- else if (!strcmp (argv[i], "-std=iso9899:199x")
- || !strcmp (argv[i], "-std=iso9899:1999")
- || !strcmp (argv[i], "-std=c9x")
- || !strcmp (argv[i], "-std=c99"))
- {
- cplusplus = 0, cplusplus_comments = 1, c89 = 0, c99 = 1, objc = 0;
- no_trigraphs = 0;
- pend_defs[2*i] = "__STRICT_ANSI__";
- pend_defs[2*i+1] = "__STDC_VERSION__=199901L";
- }
- break;
-
- case 'w':
- inhibit_warnings = 1;
- break;
-
- case 'W':
- if (!strcmp (argv[i], "-Wtrigraphs"))
- warn_trigraphs = 1;
- else if (!strcmp (argv[i], "-Wno-trigraphs"))
- warn_trigraphs = 0;
- else if (!strcmp (argv[i], "-Wcomment"))
- warn_comments = 1;
- else if (!strcmp (argv[i], "-Wno-comment"))
- warn_comments = 0;
- else if (!strcmp (argv[i], "-Wcomments"))
- warn_comments = 1;
- else if (!strcmp (argv[i], "-Wno-comments"))
- warn_comments = 0;
- else if (!strcmp (argv[i], "-Wtraditional"))
- warn_stringify = 1;
- else if (!strcmp (argv[i], "-Wno-traditional"))
- warn_stringify = 0;
- else if (!strcmp (argv[i], "-Wwhite-space"))
- warn_white_space = 1;
- else if (!strcmp (argv[i], "-Wno-white-space"))
- warn_white_space = 0;
- else if (!strcmp (argv[i], "-Wundef"))
- warn_undef = 1;
- else if (!strcmp (argv[i], "-Wno-undef"))
- warn_undef = 0;
- else if (!strcmp (argv[i], "-Wimport"))
- warn_import = 1;
- else if (!strcmp (argv[i], "-Wno-import"))
- warn_import = 0;
- else if (!strcmp (argv[i], "-Werror"))
- warnings_are_errors = 1;
- else if (!strcmp (argv[i], "-Wno-error"))
- warnings_are_errors = 0;
- else if (!strcmp (argv[i], "-Wall"))
- {
- warn_trigraphs = 1;
- warn_comments = 1;
- warn_white_space = 1;
- }
- break;
-
- case 'f':
- if (!strcmp (argv[i], "-fleading-underscore"))
- user_label_prefix = "_";
- else if (!strcmp (argv[i], "-fno-leading-underscore"))
- user_label_prefix = "";
- break;
-
- case 'M':
- /* The style of the choices here is a bit mixed.
- The chosen scheme is a hybrid of keeping all options in one string
- and specifying each option in a separate argument:
- -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
- -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
- -M[M][G][D file]. This is awkward to handle in specs, and is not
- as extensible. */
- /* ??? -MG must be specified in addition to one of -M or -MM.
- This can be relaxed in the future without breaking anything.
- The converse isn't true. */
-
- /* -MG isn't valid with -MD or -MMD. This is checked for later. */
- if (!strcmp (argv[i], "-MG"))
- {
- print_deps_missing_files = 1;
- break;
- }
- if (!strcmp (argv[i], "-M"))
- print_deps = 2;
- else if (!strcmp (argv[i], "-MM"))
- print_deps = 1;
- else if (!strcmp (argv[i], "-MD"))
- print_deps = 2;
- else if (!strcmp (argv[i], "-MMD"))
- print_deps = 1;
- /* For -MD and -MMD options, write deps on file named by next arg. */
- if (!strcmp (argv[i], "-MD")
- || !strcmp (argv[i], "-MMD")) {
- if (i + 1 == argc)
- fatal ("Filename missing after %s option", argv[i]);
- i++;
- deps_file = argv[i];
- deps_mode = "w";
- } else {
- /* For -M and -MM, write deps on standard output
- and suppress the usual output. */
- deps_stream = stdout;
- inhibit_output = 1;
- }
- break;
-
- case 'd':
- {
- char *p = argv[i] + 2;
- char c;
- while ((c = *p++)) {
- /* Arg to -d specifies what parts of macros to dump */
- switch (c) {
- case 'M':
- dump_macros = dump_only;
- no_output = 1;
- break;
- case 'N':
- dump_macros = dump_names;
- break;
- case 'D':
- dump_macros = dump_definitions;
- break;
- case 'I':
- dump_includes = 1;
- break;
- }
- }
- }
- break;
-
- case 'g':
- if (argv[i][2] == '3')
- debug_output = 1;
- break;
-
- case '-':
- if (strcmp (argv[i], "--help") != 0)
- return i;
- print_help ();
- exit (0);
- break;
-
- case 'v':
- notice ("GNU CPP version %s", version_string);
-#ifdef TARGET_VERSION
- TARGET_VERSION;
-#endif
- fprintf (stderr, "\n");
- verbose = 1;
- break;
-
- case 'H':
- print_include_names = 1;
- break;
-
- case 'D':
- if (argv[i][2] != 0)
- pend_defs[2*i] = argv[i] + 2;
- else if (i + 1 == argc)
- fatal ("Macro name missing after -D option");
- else
- i++, pend_defs[2*i] = argv[i];
- break;
-
- case 'A':
- {
- char *p;
-
- if (argv[i][2] != 0)
- p = argv[i] + 2;
- else if (i + 1 == argc)
- fatal ("Assertion missing after -A option");
- else
- p = argv[++i];
-
- if (!strcmp (p, "-")) {
- /* -A- eliminates all predefined macros and assertions.
- Let's include also any that were specified earlier
- on the command line. That way we can get rid of any
- that were passed automatically in from GCC. */
- int j;
- for (j = 0; j < i; j++)
- pend_defs[2*j] = pend_assertions[j] = 0;
- } else {
- pend_assertions[i] = p;
- pend_assertion_options[i] = "-A";
- }
- }
- break;
-
- case 'U': /* JF #undef something */
- if (argv[i][2] != 0)
- pend_undefs[i] = argv[i] + 2;
- else if (i + 1 == argc)
- fatal ("Macro name missing after -U option");
- else
- pend_undefs[i] = argv[i+1], i++;
- break;
-
- case 'C':
- put_out_comments = 1;
- break;
-
- case 'E': /* -E comes from cc -E; ignore it. */
- break;
-
- case 'P':
- no_line_directives = 1;
- break;
-
- case '$': /* Don't include $ in identifiers. */
- is_idchar['$'] = is_idstart['$'] = 0;
- break;
-
- case 'I': /* Add directory to path for includes. */
- {
- struct file_name_list *dirtmp;
- char *dir = argv[i][2] ? argv[i] + 2 : argv[++i];
-
- if (! ignore_srcdir && dir && !strcmp (dir, "-")) {
- ignore_srcdir = 1;
- /* Don't use any preceding -I directories for #include <...>. */
- first_bracket_include = 0;
- }
- else {
- dirtmp = new_include_prefix (last_include, NULL_PTR, "", dir);
- append_include_chain (dirtmp, dirtmp);
- }
- }
- break;
-
- case 'n':
- if (!strcmp (argv[i], "-nostdinc"))
- /* -nostdinc causes no default include directories.
- You must specify all include-file directories with -I. */
- no_standard_includes = 1;
- else if (!strcmp (argv[i], "-nostdinc++"))
- /* -nostdinc++ causes no default C++-specific include directories. */
- no_standard_cplusplus_includes = 1;
- else if (!strcmp (argv[i], "-noprecomp"))
- no_precomp = 1;
- break;
-
- case 'r':
- if (!strcmp (argv[i], "-remap"))
- remap = 1;
- break;
-
- case '\0': /* JF handle '-' as file name meaning stdin or stdout */
- if (in_fname == NULL) {
- in_fname = "";
- break;
- } else if (out_fname == NULL) {
- out_fname = "";
- break;
- } /* else fall through into error */
-
- default:
- fatal ("Invalid option `%s'", argv[i]);
- }
- }
- }
-
- /* Add dirs from CPATH after dirs from -I. */
- /* There seems to be confusion about what CPATH should do,
- so for the moment it is not documented. */
- /* Some people say that CPATH should replace the standard include dirs,
- but that seems pointless: it comes before them, so it overrides them
- anyway. */
- GET_ENV_PATH_LIST (cp, "CPATH");
- if (cp && ! no_standard_includes)
- path_include (cp);
-
- /* Initialize output buffer */
-
- outbuf.buf = (U_CHAR *) xmalloc (OUTBUF_SIZE);
- outbuf.bufp = outbuf.buf;
- outbuf.length = OUTBUF_SIZE;
-
- /* Do partial setup of input buffer for the sake of generating
- early #line directives (when -g is in effect). */
-
- fp = &instack[++indepth];
- if (in_fname == NULL)
- in_fname = "";
- fp->nominal_fname = fp->fname = in_fname;
- fp->nominal_fname_len = strlen (in_fname);
- fp->lineno = 0;
-
- /* Install __LINE__, etc. Must follow initialize_char_syntax
- and option processing. */
- initialize_builtins (fp, &outbuf);
-
- /* Now handle the command line options. */
-
- /* Do -U's, -D's and -A's in the order they were seen. */
- for (i = 1; i < argc; i++) {
- if (pend_undefs[i]) {
- if (debug_output)
- output_line_directive (fp, &outbuf, 0, same_file);
- make_undef (pend_undefs[i], &outbuf);
- }
- if (pend_defs[2*i]) {
- if (debug_output)
- output_line_directive (fp, &outbuf, 0, same_file);
- make_definition (pend_defs[2*i]);
- }
- if (pend_defs[2*i+1]) {
- if (debug_output)
- output_line_directive (fp, &outbuf, 0, same_file);
- make_definition (pend_defs[2*i+1]);
- }
- if (pend_assertions[i])
- make_assertion (pend_assertion_options[i], pend_assertions[i]);
- }
-
- done_initializing = 1;
-
- { /* Read the appropriate environment variable and if it exists
- replace include_defaults with the listed path. */
- char *epath = 0;
- switch ((objc << 1) + cplusplus)
- {
- case 0:
- GET_ENV_PATH_LIST (epath, "C_INCLUDE_PATH");
- break;
- case 1:
- GET_ENV_PATH_LIST (epath, "CPLUS_INCLUDE_PATH");
- break;
- case 2:
- GET_ENV_PATH_LIST (epath, "OBJC_INCLUDE_PATH");
- break;
- case 3:
- GET_ENV_PATH_LIST (epath, "OBJCPLUS_INCLUDE_PATH");
- break;
- }
- /* If the environment var for this language is set,
- add to the default list of include directories. */
- if (epath) {
- int num_dirs;
- char *startp, *endp;
-
- for (num_dirs = 1, startp = epath; *startp; startp++)
- if (*startp == PATH_SEPARATOR)
- num_dirs++;
- include_defaults
- = (struct default_include *) xmalloc ((num_dirs
- * sizeof (struct default_include))
- + sizeof (include_defaults_array));
- startp = endp = epath;
- num_dirs = 0;
- while (1) {
- char c = *endp++;
- if (c == PATH_SEPARATOR || !c) {
- endp[-1] = 0;
- include_defaults[num_dirs].fname
- = startp == endp ? "." : xstrdup (startp);
- endp[-1] = c;
- include_defaults[num_dirs].component = 0;
- include_defaults[num_dirs].cplusplus = cplusplus;
- include_defaults[num_dirs].cxx_aware = 1;
- num_dirs++;
- if (!c)
- break;
- startp = endp;
- }
- }
- /* Put the usual defaults back in at the end. */
- bcopy ((const PTR) include_defaults_array,
- (PTR) &include_defaults[num_dirs],
- sizeof (include_defaults_array));
- }
- }
-
- append_include_chain (before_system, last_before_system);
- first_system_include = before_system;
-
- /* Unless -fnostdinc,
- tack on the standard include file dirs to the specified list */
- if (!no_standard_includes) {
- struct default_include *p = include_defaults;
- char *specd_prefix = include_prefix;
- char *default_prefix = xstrdup (GCC_INCLUDE_DIR);
- int default_len = 0;
- /* Remove the `include' from /usr/local/lib/gcc.../include. */
- if (!strcmp (default_prefix + strlen (default_prefix) - 8, "/include")) {
- default_len = strlen (default_prefix) - 7;
- default_prefix[default_len] = 0;
- }
- /* Search "translated" versions of GNU directories.
- These have /usr/local/lib/gcc... replaced by specd_prefix. */
- if (specd_prefix != 0 && default_len != 0)
- for (p = include_defaults; p->fname; p++) {
- /* Some standard dirs are only for C++. */
- if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
- /* Does this dir start with the prefix? */
- if (!strncmp (p->fname, default_prefix, default_len)) {
- /* Yes; change prefix and add to search list. */
- struct file_name_list *new
- = new_include_prefix (NULL_PTR, NULL_PTR, specd_prefix,
- p->fname + default_len);
- if (new) {
- new->c_system_include_path = !p->cxx_aware;
- append_include_chain (new, new);
- if (first_system_include == 0)
- first_system_include = new;
- p->included = 1;
- }
- }
- }
- }
- /* Search ordinary names for GNU include directories. */
- for (p = include_defaults; p->fname; p++) {
- /* Some standard dirs are only for C++. */
- if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
- struct file_name_list *new
- = new_include_prefix (NULL_PTR, p->component, "", p->fname);
- if (new) {
- new->c_system_include_path = !p->cxx_aware;
- append_include_chain (new, new);
- if (first_system_include == 0)
- first_system_include = new;
- p->included = 1;
- }
- }
- }
- }
-
- /* Tack the after_include chain at the end of the include chain. */
- append_include_chain (after_include, last_after_include);
- if (first_system_include == 0)
- first_system_include = after_include;
-
- /* With -v, print the list of dirs to search. */
- if (verbose) {
- struct file_name_list *p;
- notice ("#include \"...\" search starts here:\n");
- for (p = include; p; p = p->next) {
- if (p == first_bracket_include)
- notice ("#include <...> search starts here:\n");
- if (!p->fname[0])
- fprintf (stderr, " .\n");
- else if (!strcmp (p->fname, "/") || !strcmp (p->fname, "//"))
- fprintf (stderr, " %s\n", p->fname);
- else
- /* Omit trailing '/'. */
- fprintf (stderr, " %.*s\n", (int) strlen (p->fname) - 1, p->fname);
- }
- notice ("End of search list.\n");
- {
- struct default_include * d;
- notice ("The following default directories have been omitted from the search path:\n");
- for (d = include_defaults; d->fname; d++)
- if (! d->included)
- fprintf (stderr, " %s\n", d->fname);
- notice ("End of omitted list.\n");
- }
- }
-
- /* -MG doesn't select the form of output and must be specified with one of
- -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
- inhibit compilation. */
- if (print_deps_missing_files && (print_deps == 0 || !inhibit_output))
- fatal ("-MG must be specified with one of -M or -MM");
-
- /* Either of two environment variables can specify output of deps.
- Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
- where OUTPUT_FILE is the file to write deps info to
- and DEPS_TARGET is the target to mention in the deps. */
-
- if (print_deps == 0
- && (getenv ("SUNPRO_DEPENDENCIES") != 0
- || getenv ("DEPENDENCIES_OUTPUT") != 0)) {
- char *spec = getenv ("DEPENDENCIES_OUTPUT");
- char *s;
- char *output_file;
-
- if (spec == 0) {
- spec = getenv ("SUNPRO_DEPENDENCIES");
- print_deps = 2;
- }
- else
- print_deps = 1;
-
- /* Find the space before the DEPS_TARGET, if there is one. */
- s = index (spec, ' ');
- if (s) {
- deps_target = s + 1;
- output_file = xmalloc (s - spec + 1);
- bcopy (spec, output_file, s - spec);
- output_file[s - spec] = 0;
- } else {
- deps_target = 0;
- output_file = spec;
- }
-
- deps_file = output_file;
- deps_mode = "a";
- }
-
- /* For -M, print the expected object file name
- as the target of this Make-rule. */
- if (print_deps) {
- deps_allocated_size = 200;
- deps_buffer = xmalloc (deps_allocated_size);
- deps_buffer[0] = 0;
- deps_size = 0;
- deps_column = 0;
-
- if (deps_target) {
- deps_output (deps_target, ':');
- } else if (*in_fname == 0) {
- deps_output ("-", ':');
- } else {
- char *p, *q;
- int len;
-
- q = base_name (in_fname);
-
- /* Copy remainder to mungable area. */
- p = (char *) alloca (strlen(q) + 8);
- strcpy (p, q);
-
- /* Output P, but remove known suffixes. */
- len = strlen (p);
- q = p + len;
- if (len >= 2
- && p[len - 2] == '.'
- && index("cCsSm", p[len - 1]))
- q = p + (len - 2);
- else if (len >= 3
- && p[len - 3] == '.'
- && p[len - 2] == 'c'
- && p[len - 1] == 'c')
- q = p + (len - 3);
- else if (len >= 4
- && p[len - 4] == '.'
- && p[len - 3] == 'c'
- && p[len - 2] == 'x'
- && p[len - 1] == 'x')
- q = p + (len - 4);
- else if (len >= 4
- && p[len - 4] == '.'
- && p[len - 3] == 'c'
- && p[len - 2] == 'p'
- && p[len - 1] == 'p')
- q = p + (len - 4);
-
- /* Supply our own suffix. */
- strcpy (q, OBJECT_SUFFIX);
-
- deps_output (p, ':');
- }
-
- deps_output (in_fname, ' ');
- }
-
- /* Scan the -imacros files before the main input.
- Much like #including them, but with no_output set
- so that only their macro definitions matter. */
-
- no_output++; no_record_file++;
- for (i = 1; i < argc; i++)
- if (pend_files[i]) {
- struct include_file *inc;
- int fd = open_include_file (pend_files[i], NULL_PTR, NULL_PTR, &inc);
- if (fd < 0) {
- perror_with_name (pend_files[i]);
- return FATAL_EXIT_CODE;
- }
- finclude (fd, inc, &outbuf, 0, NULL_PTR);
- }
- no_output--; no_record_file--;
-
- /* Copy the entire contents of the main input file into
- the stacked input buffer previously allocated for it. */
-
- /* JF check for stdin */
- if (in_fname == NULL || *in_fname == 0) {
- in_fname = "";
- f = 0;
- } else if ((f = open (in_fname, O_RDONLY, 0666)) < 0)
- goto perror;
-
- if (fstat (f, &st) != 0)
- pfatal_with_name (in_fname);
- fp->nominal_fname = fp->fname = in_fname;
- fp->nominal_fname_len = strlen (in_fname);
- fp->lineno = 1;
- fp->system_header_p = 0;
- /* JF all this is mine about reading pipes and ttys */
- if (! S_ISREG (st.st_mode)) {
- /* Read input from a file that is not a normal disk file.
- We cannot preallocate a buffer with the correct size,
- so we must read in the file a piece at the time and make it bigger. */
- int size;
- int bsize;
- int cnt;
-
- if (S_ISDIR (st.st_mode))
- fatal ("Input file `%s' is a directory", in_fname);
-
- bsize = 2000;
- size = 0;
- fp->buf = (U_CHAR *) xmalloc (bsize + 2);
- for (;;) {
- cnt = safe_read (f, (char *) fp->buf + size, bsize - size);
- if (cnt < 0) goto perror; /* error! */
- size += cnt;
- if (size != bsize) break; /* End of file */
- bsize *= 2;
- fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
- }
- fp->length = size;
- } else {
- /* Read a file whose size we can determine in advance.
- For the sake of VMS, st.st_size is just an upper bound. */
- size_t s = (size_t) st.st_size;
- if (s != st.st_size || s + 2 < s)
- memory_full ();
- fp->buf = (U_CHAR *) xmalloc (s + 2);
- fp->length = safe_read (f, (char *) fp->buf, s);
- if (fp->length < 0) goto perror;
- }
- fp->bufp = fp->buf;
- fp->if_stack = if_stack;
-
- /* Make sure data ends with a newline. And put a null after it. */
-
- if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
- /* Backslash-newline at end is not good enough. */
- || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
- fp->buf[fp->length++] = '\n';
- missing_newline = 1;
- }
- fp->buf[fp->length] = '\0';
-
- /* Unless inhibited, convert trigraphs in the input. */
-
- if (!no_trigraphs)
- trigraph_pcp (fp);
-
- if (warn_white_space)
- check_white_space (fp);
-
- /* Now that we know the input file is valid, open the output. */
-
- if (!out_fname || !strcmp (out_fname, ""))
- out_fname = "stdout";
- else if (! freopen (out_fname, "w", stdout))
- pfatal_with_name (out_fname);
-
- output_line_directive (fp, &outbuf, 0, same_file);
-
- /* Scan the -include files before the main input. */
-
- no_record_file++;
- for (i = 1; i < argc; i++)
- if (pend_includes[i]) {
- struct include_file *inc;
- int fd = open_include_file (pend_includes[i], NULL_PTR, NULL_PTR, &inc);
- if (fd < 0) {
- perror_with_name (pend_includes[i]);
- return FATAL_EXIT_CODE;
- }
- finclude (fd, inc, &outbuf, 0, NULL_PTR);
- }
- no_record_file--;
-
- /* Scan the input, processing macros and directives. */
-
- rescan (&outbuf, 0);
-
- if (missing_newline)
- fp->lineno--;
-
- if (pedantic && missing_newline)
- pedwarn ("file does not end in newline");
-
- /* Now we have processed the entire input
- Write whichever kind of output has been requested. */
-
- if (dump_macros == dump_only)
- dump_all_macros ();
- else if (! inhibit_output) {
- write_output ();
- }
-
- if (print_deps) {
- /* Don't actually write the deps file if compilation has failed. */
- if (errors == 0) {
- if (deps_file && ! (deps_stream = fopen (deps_file, deps_mode)))
- pfatal_with_name (deps_file);
- fputs (deps_buffer, deps_stream);
- putc ('\n', deps_stream);
- if (deps_file) {
- if (ferror (deps_stream) || fclose (deps_stream) != 0)
- fatal ("I/O error on output");
- }
- }
- }
-
- if (pcp_outfile && pcp_outfile != stdout
- && (ferror (pcp_outfile) || fclose (pcp_outfile) != 0))
- fatal ("I/O error on `-pcp' output");
-
- if (ferror (stdout) || fclose (stdout) != 0)
- fatal ("I/O error on output");
-
- if (errors)
- exit (FATAL_EXIT_CODE);
- exit (SUCCESS_EXIT_CODE);
-
- perror:
- pfatal_with_name (in_fname);
- return 0;
-}
-\f
-/* Given a colon-separated list of file names PATH,
- add all the names to the search path for include files. */
-
-static void
-path_include (path)
- char *path;
-{
- char *p;
-
- p = path;
-
- if (*p)
- while (1) {
- char *q = p;
- char c;
- struct file_name_list *dirtmp;
-
- /* Find the end of this name. */
- while ((c = *q++) != PATH_SEPARATOR && c)
- continue;
-
- q[-1] = 0;
- dirtmp = new_include_prefix (last_include, NULL_PTR,
- "", p == q ? "." : p);
- q[-1] = c;
- append_include_chain (dirtmp, dirtmp);
-
- /* Advance past this name. */
- p = q;
- if (! c)
- break;
- }
-}
-\f
-/* Return the address of the first character in S that equals C.
- S is an array of length N, possibly containing '\0's, and followed by '\0'.
- Return 0 if there is no such character. Assume that C itself is not '\0'.
- If we knew we could use memchr, we could just invoke memchr (S, C, N),
- but unfortunately memchr isn't autoconfigured yet. */
-
-static const U_CHAR *
-index0 (s, c, n)
- const U_CHAR *s;
- int c;
- size_t n;
-{
- const char *p = (const char *) s;
- for (;;) {
- const char *q = index (p, c);
- if (q)
- return (const U_CHAR *) q;
- else {
- size_t l = strlen (p);
- if (l == n)
- return 0;
- l++;
- p += l;
- n -= l;
- }
- }
-}
-\f
-/* Pre-C-Preprocessor to translate ANSI trigraph idiocy in BUF
- before main CCCP processing. Name `pcp' is also in honor of the
- drugs the trigraph designers must have been on.
-
- Using an extra pass through the buffer takes a little extra time,
- but is infinitely less hairy than trying to handle trigraphs inside
- strings, etc. everywhere, and also makes sure that trigraphs are
- only translated in the top level of processing. */
-
-static void
-trigraph_pcp (buf)
- FILE_BUF *buf;
-{
- register U_CHAR c, *bptr;
- register const U_CHAR *fptr, *sptr, *lptr;
- int len;
-
- fptr = sptr = bptr = buf->buf;
- lptr = fptr + buf->length;
- while ((sptr = index0 (sptr, '?', (size_t) (lptr - sptr))) != NULL) {
- if (*++sptr != '?')
- continue;
- switch (*++sptr) {
- case '=':
- c = '#';
- break;
- case '(':
- c = '[';
- break;
- case '/':
- c = '\\';
- break;
- case ')':
- c = ']';
- break;
- case '\'':
- c = '^';
- break;
- case '<':
- c = '{';
- break;
- case '!':
- c = '|';
- break;
- case '>':
- c = '}';
- break;
- case '-':
- c = '~';
- break;
- case '?':
- sptr--;
- continue;
- default:
- continue;
- }
- len = sptr - fptr - 2;
-
- /* BSD doc says bcopy () works right for overlapping strings. In ANSI
- C, this will be memmove (). */
- if (bptr != fptr && len > 0)
- bcopy ((const PTR) fptr, (PTR) bptr, len);
-
- bptr += len;
- *bptr++ = c;
- fptr = ++sptr;
- }
- len = buf->length - (fptr - buf->buf);
- if (bptr != fptr && len > 0)
- bcopy ((const PTR) fptr, (PTR) bptr, len);
- buf->length -= fptr - bptr;
- buf->buf[buf->length] = '\0';
- if (warn_trigraphs && fptr != bptr)
- warning_with_line (0, "%lu trigraph(s) encountered",
- (unsigned long) (fptr - bptr) / 2);
-}
-
-/* Warn about white space between backslash and end of line. */
-
-static void
-check_white_space (buf)
- FILE_BUF *buf;
-{
- register const U_CHAR *sptr = buf->buf;
- register const U_CHAR *lptr = sptr + buf->length;
- register const U_CHAR *nptr;
- int line = 0;
-
- nptr = sptr = buf->buf;
- lptr = sptr + buf->length;
- for (nptr = sptr;
- (nptr = index0 (nptr, '\n', (size_t) (lptr - nptr))) != NULL;
- nptr ++) {
- register const U_CHAR *p = nptr;
- line++;
- for (p = nptr; sptr < p; p--) {
- if (! is_hor_space[p[-1]]) {
- if (p[-1] == '\\' && p != nptr)
- warning_with_line (line,
- "`\\' followed by white space at end of line");
- break;
- }
- }
- }
-}
-\f
-/* Move all backslash-newline pairs out of embarrassing places.
- Exchange all such pairs following BP
- with any potentially-embarrassing characters that follow them.
- Potentially-embarrassing characters are / and *
- (because a backslash-newline inside a comment delimiter
- would cause it not to be recognized).
- We assume that *BP == '\\'. */
-
-static void
-newline_fix (bp)
- U_CHAR *bp;
-{
- register U_CHAR *p = bp;
-
- /* First count the backslash-newline pairs here. */
- do {
- if (p[1] != '\n')
- break;
- p += 2;
- } while (*p == '\\');
-
- /* What follows the backslash-newlines is not embarrassing. */
-
- if (*p != '/' && *p != '*')
- /* What follows the backslash-newlines is not embarrassing. */
- return;
-
- /* Copy all potentially embarrassing characters
- that follow the backslash-newline pairs
- down to where the pairs originally started. */
- do
- *bp++ = *p++;
- while (*p == '*' || *p == '/');
-
- /* Now write the same number of pairs after the embarrassing chars. */
- while (bp < p) {
- *bp++ = '\\';
- *bp++ = '\n';
- }
-}
-
-/* Like newline_fix but for use within a directive-name.
- Move any backslash-newlines up past any following symbol constituents. */
-
-static void
-name_newline_fix (bp)
- U_CHAR *bp;
-{
- register U_CHAR *p = bp;
-
- /* First count the backslash-newline pairs here. */
- do {
- if (p[1] != '\n')
- break;
- p += 2;
- } while (*p == '\\');
-
- /* What follows the backslash-newlines is not embarrassing. */
-
- if (!is_idchar[*p])
- /* What follows the backslash-newlines is not embarrassing. */
- return;
-
- /* Copy all potentially embarrassing characters
- that follow the backslash-newline pairs
- down to where the pairs originally started. */
- do
- *bp++ = *p++;
- while (is_idchar[*p]);
-
- /* Now write the same number of pairs after the embarrassing chars. */
- while (bp < p) {
- *bp++ = '\\';
- *bp++ = '\n';
- }
-}
-\f
-/* Look for lint commands in comments.
-
- When we come in here, ibp points into a comment. Limit is as one expects.
- scan within the comment -- it should start, after lwsp, with a lint command.
- If so that command is returned as a (constant) string.
-
- Upon return, any arg will be pointed to with argstart and will be
- arglen long. Note that we don't parse that arg since it will just
- be printed out again. */
-
-static const char *
-get_lintcmd (ibp, limit, argstart, arglen, cmdlen)
- register const U_CHAR *ibp;
- register const U_CHAR *limit;
- const U_CHAR **argstart; /* point to command arg */
- int *arglen, *cmdlen; /* how long they are */
-{
- HOST_WIDEST_INT linsize;
- register const U_CHAR *numptr; /* temp for arg parsing */
-
- *arglen = 0;
-
- SKIP_WHITE_SPACE (ibp);
-
- if (ibp >= limit) return NULL;
-
- linsize = limit - ibp;
-
- /* Oh, I wish C had lexical functions... hell, I'll just open-code the set */
- if ((linsize >= 10) && !bcmp (ibp, "NOTREACHED", 10)) {
- *cmdlen = 10;
- return "NOTREACHED";
- }
- if ((linsize >= 8) && !bcmp (ibp, "ARGSUSED", 8)) {
- *cmdlen = 8;
- return "ARGSUSED";
- }
- if ((linsize >= 11) && !bcmp (ibp, "LINTLIBRARY", 11)) {
- *cmdlen = 11;
- return "LINTLIBRARY";
- }
- if ((linsize >= 7) && !bcmp (ibp, "VARARGS", 7)) {
- *cmdlen = 7;
- ibp += 7; linsize -= 7;
- if ((linsize == 0) || ! ISDIGIT (*ibp)) return "VARARGS";
-
- /* OK, read a number */
- for (numptr = *argstart = ibp; (numptr < limit) && ISDIGIT (*numptr);
- numptr++);
- *arglen = numptr - *argstart;
- return "VARARGS";
- }
- return NULL;
-}
-\f
-/*
- * The main loop of the program.
- *
- * Read characters from the input stack, transferring them to the
- * output buffer OP.
- *
- * Macros are expanded and push levels on the input stack.
- * At the end of such a level it is popped off and we keep reading.
- * At the end of any other kind of level, we return.
- * #-directives are handled, except within macros.
- *
- * If OUTPUT_MARKS is nonzero, keep Newline markers found in the input
- * and insert them when appropriate. This is set while scanning macro
- * arguments before substitution. It is zero when scanning for final output.
- * There are two types of Newline markers:
- * * Newline - follows a macro name that was not expanded
- * because it appeared inside an expansion of the same macro.
- * This marker prevents future expansion of that identifier.
- * When the input is rescanned into the final output, these are deleted.
- * These are also deleted by ## concatenation.
- * * Newline Space (or Newline and any other whitespace character)
- * stands for a place that tokens must be separated or whitespace
- * is otherwise desirable, but where the ANSI standard specifies there
- * is no whitespace. This marker turns into a Space (or whichever other
- * whitespace char appears in the marker) in the final output,
- * but it turns into nothing in an argument that is stringified with #.
- * Such stringified arguments are the only place where the ANSI standard
- * specifies with precision that whitespace may not appear.
- *
- * During this function, IP->bufp is kept cached in IBP for speed of access.
- * Likewise, OP->bufp is kept in OBP. Before calling a subroutine
- * IBP, IP and OBP must be copied back to memory. IP and IBP are
- * copied back with the RECACHE macro. OBP must be copied back from OP->bufp
- * explicitly, and before RECACHE, since RECACHE uses OBP.
- */
-
-static void
-rescan (op, output_marks)
- FILE_BUF *op;
- int output_marks;
-{
- /* Character being scanned in main loop. */
- register U_CHAR c;
-
- /* Length of pending accumulated identifier. */
- register int ident_length = 0;
-
- /* Hash code of pending accumulated identifier. */
- register int hash = 0;
-
- /* Current input level (&instack[indepth]). */
- FILE_BUF *ip;
-
- /* Pointer for scanning input. */
- register U_CHAR *ibp;
-
- /* Pointer to end of input. End of scan is controlled by LIMIT. */
- register U_CHAR *limit;
-
- /* Pointer for storing output. */
- register U_CHAR *obp;
-
- /* REDO_CHAR is nonzero if we are processing an identifier
- after backing up over the terminating character.
- Sometimes we process an identifier without backing up over
- the terminating character, if the terminating character
- is not special. Backing up is done so that the terminating character
- will be dispatched on again once the identifier is dealt with. */
- int redo_char = 0;
-
- /* 1 if within an identifier inside of which a concatenation
- marker (Newline -) has been seen. */
- int concatenated = 0;
-
- /* While scanning a comment or a string constant,
- this records the line it started on, for error messages. */
- int start_line;
-
- /* Record position of last `real' newline. */
- U_CHAR *beg_of_line;
-
-/* Pop the innermost input stack level, assuming it is a macro expansion. */
-
-#define POPMACRO \
-do { ip->macro->type = T_MACRO; \
- if (ip->free_ptr) free (ip->free_ptr); \
- --indepth; } while (0)
-
-/* Reload `rescan's local variables that describe the current
- level of the input stack. */
-
-#define RECACHE \
-do { ip = &instack[indepth]; \
- ibp = ip->bufp; \
- limit = ip->buf + ip->length; \
- op->bufp = obp; \
- check_expand (op, limit - ibp); \
- beg_of_line = 0; \
- obp = op->bufp; } while (0)
-
- if (no_output && instack[indepth].fname != 0)
- skip_if_group (&instack[indepth], 1, NULL);
-
- obp = op->bufp;
- RECACHE;
-
- beg_of_line = ibp;
-
- /* Our caller must always put a null after the end of
- the input at each input stack level. */
- if (*limit != 0)
- abort ();
-
- while (1) {
- c = *ibp++;
- *obp++ = c;
-
- switch (c) {
- case '\\':
- if (*ibp == '\n' && !ip->macro) {
- /* At the top level, always merge lines ending with backslash-newline,
- even in middle of identifier. But do not merge lines in a macro,
- since backslash might be followed by a newline-space marker. */
- ++ibp;
- ++ip->lineno;
- --obp; /* remove backslash from obuf */
- break;
- }
- /* If ANSI, backslash is just another character outside a string. */
- if (!traditional)
- goto randomchar;
- /* Otherwise, backslash suppresses specialness of following char,
- so copy it here to prevent the switch from seeing it.
- But first get any pending identifier processed. */
- if (ident_length > 0)
- goto specialchar;
- if (ibp < limit)
- *obp++ = *ibp++;
- break;
-
- case '%':
- if (ident_length || ip->macro || traditional)
- goto randomchar;
- while (*ibp == '\\' && ibp[1] == '\n') {
- ibp += 2;
- ++ip->lineno;
- }
- if (*ibp != ':')
- break;
- /* Treat this %: digraph as if it were #. */
- /* Fall through. */
-
- case '#':
- if (assertions_flag) {
- if (ident_length)
- goto specialchar;
- /* Copy #foo (bar lose) without macro expansion. */
- obp[-1] = '#'; /* In case it was '%'. */
- SKIP_WHITE_SPACE (ibp);
- while (is_idchar[*ibp])
- *obp++ = *ibp++;
- SKIP_WHITE_SPACE (ibp);
- if (*ibp == '(') {
- ip->bufp = ibp;
- skip_paren_group (ip);
- bcopy ((const PTR) ibp, (PTR) obp, ip->bufp - ibp);
- obp += ip->bufp - ibp;
- ibp = ip->bufp;
- }
- break;
- }
-
- /* If this is expanding a macro definition, don't recognize
- preprocessing directives. */
- if (ip->macro != 0)
- goto randomchar;
- /* If this is expand_into_temp_buffer,
- don't recognize them either. Warn about them
- only after an actual newline at this level,
- not at the beginning of the input level. */
- if (! ip->fname) {
- if (ip->buf != beg_of_line)
- warning ("preprocessing directive not recognized within macro arg");
- goto randomchar;
- }
- if (ident_length)
- goto specialchar;
-
-
- /* # keyword: a # must be first nonblank char on the line */
- if (beg_of_line == 0)
- goto randomchar;
- {
- U_CHAR *bp;
-
- /* Scan from start of line, skipping whitespace, comments
- and backslash-newlines, and see if we reach this #.
- If not, this # is not special. */
- bp = beg_of_line;
- /* If -traditional, require # to be at beginning of line. */
- if (!traditional) {
- while (1) {
- if (is_hor_space[*bp])
- bp++;
- else if (*bp == '\\' && bp[1] == '\n')
- bp += 2;
- else if (*bp == '/' && bp[1] == '*') {
- bp += 2;
- while (1)
- {
- if (*bp == '*')
- {
- if (bp[1] == '/')
- {
- bp += 2;
- break;
- }
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length;
- length = local_mblen (bp, limit - bp);
- if (length > 1)
- bp += (length - 1);
-#endif
- }
- bp++;
- }
- }
- /* There is no point in trying to deal with C++ // comments here,
- because if there is one, then this # must be part of the
- comment and we would never reach here. */
- else break;
- }
- if (c == '%') {
- if (bp[0] != '%')
- break;
- while (bp[1] == '\\' && bp[2] == '\n')
- bp += 2;
- if (bp + 1 != ibp)
- break;
- /* %: appears at start of line; skip past the ':' too. */
- bp++;
- ibp++;
- }
- }
- if (bp + 1 != ibp)
- goto randomchar;
- }
-
- /* This # can start a directive. */
-
- --obp; /* Don't copy the '#' */
-
- ip->bufp = ibp;
- op->bufp = obp;
- if (! handle_directive (ip, op)) {
-#ifdef USE_C_ALLOCA
- alloca (0);
-#endif
- /* Not a known directive: treat it as ordinary text.
- IP, OP, IBP, etc. have not been changed. */
- if (no_output && instack[indepth].fname) {
- /* If not generating expanded output,
- what we do with ordinary text is skip it.
- Discard everything until next # directive. */
- skip_if_group (&instack[indepth], 1, 0);
- RECACHE;
- beg_of_line = ibp;
- break;
- }
- *obp++ = '#'; /* Copy # (even if it was originally %:). */
- /* Don't expand an identifier that could be a macro directive.
- (Section 3.8.3 of the ANSI C standard) */
- SKIP_WHITE_SPACE (ibp);
- if (is_idstart[*ibp])
- {
- *obp++ = *ibp++;
- while (is_idchar[*ibp])
- *obp++ = *ibp++;
- }
- goto randomchar;
- }
-#ifdef USE_C_ALLOCA
- alloca (0);
-#endif
- /* A # directive has been successfully processed. */
- /* If not generating expanded output, ignore everything until
- next # directive. */
- if (no_output && instack[indepth].fname)
- skip_if_group (&instack[indepth], 1, 0);
- obp = op->bufp;
- RECACHE;
- beg_of_line = ibp;
- break;
-
- case '\"': /* skip quoted string */
- case '\'':
- /* A single quoted string is treated like a double -- some
- programs (e.g., troff) are perverse this way */
-
- /* Handle any pending identifier;
- but the L in L'...' or L"..." is not an identifier. */
- if (ident_length) {
- if (! (ident_length == 1 && hash == HASHSTEP (0, 'L')))
- goto specialchar;
- ident_length = hash = 0;
- }
-
- start_line = ip->lineno;
-
- /* Skip ahead to a matching quote. */
-
- while (1) {
- if (ibp >= limit) {
- if (ip->macro != 0) {
- /* try harder: this string crosses a macro expansion boundary.
- This can happen naturally if -traditional.
- Otherwise, only -D can make a macro with an unmatched quote. */
- POPMACRO;
- RECACHE;
- continue;
- }
- if (!traditional) {
- error_with_line (line_for_error (start_line),
- "unterminated string or character constant");
- if (multiline_string_line) {
- error_with_line (multiline_string_line,
- "possible real start of unterminated constant");
- multiline_string_line = 0;
- }
- }
- break;
- }
- *obp++ = *ibp;
- switch (*ibp++) {
- case '\n':
- if (warn_white_space && ip->fname && is_hor_space[ibp[-2]])
- warning ("white space at end of line in string");
- ++ip->lineno;
- ++op->lineno;
- /* Traditionally, end of line ends a string constant with no error.
- So exit the loop and record the new line. */
- if (traditional) {
- beg_of_line = ibp;
- goto while2end;
- }
- if (c == '\'') {
- error_with_line (line_for_error (start_line),
- "unterminated character constant");
- goto while2end;
- }
- if (multiline_string_line == 0) {
- if (pedantic)
- pedwarn_with_line (line_for_error (start_line),
- "string constant runs past end of line");
- multiline_string_line = ip->lineno - 1;
- }
- break;
-
- case '\\':
- if (*ibp == '\n') {
- /* Backslash newline is replaced by nothing at all, but
- keep the line counts correct. But if we are reading
- from a macro, keep the backslash newline, since backslash
- newlines have already been processed. */
- if (ip->macro) {
- *obp++ = '\n';
- ++op->lineno;
- } else
- --obp;
- ++ibp;
- ++ip->lineno;
- } else {
- /* ANSI stupidly requires that in \\ the second \
- is *not* prevented from combining with a newline. */
- if (!ip->macro) {
- while (*ibp == '\\' && ibp[1] == '\n') {
- *obp++ = *ibp++;
- *obp++ = *ibp++;
- ++ip->lineno;
- ++op->lineno;
- }
- }
- *obp++ = *ibp++;
- }
- break;
-
- case '\"':
- case '\'':
- if (ibp[-1] == c)
- goto while2end;
- break;
-#ifdef MULTIBYTE_CHARS
- default:
- {
- int length;
- --ibp;
- length = local_mblen (ibp, limit - ibp);
- if (length > 0)
- {
- --obp;
- bcopy (ibp, obp, length);
- obp += length;
- ibp += length;
- }
- else
- ++ibp;
- }
- break;
-#endif
- }
- }
- while2end:
- break;
-
- case '/':
- if (ip->macro != 0)
- goto randomchar;
- if (*ibp == '\\')
- newline_fix (ibp);
- if (*ibp != '*'
- && !(cplusplus_comments && *ibp == '/'))
- goto randomchar;
- if (ident_length)
- goto specialchar;
-
- if (*ibp == '/') {
- /* C++ style comment... */
- start_line = ip->lineno;
-
- /* Comments are equivalent to spaces. */
- if (! put_out_comments)
- obp[-1] = ' ';
-
- {
- U_CHAR *before_bp = ibp;
-
- while (++ibp < limit) {
- if (*ibp == '\n')
- {
- if (put_out_comments) {
- bcopy ((const PTR) before_bp, (PTR) obp, ibp - before_bp);
- obp += ibp - before_bp;
- }
- break;
- }
- if (*ibp == '\\')
- {
- if (ibp + 1 < limit && ibp[1] == '\n')
- {
- if (warn_comments)
- warning ("multiline `//' comment");
- ++ip->lineno;
- /* Copy the newline into the output buffer, in order to
- avoid the pain of a #line every time a multiline comment
- is seen. */
- if (!put_out_comments)
- *obp++ = '\n';
- ++op->lineno;
- ++ibp;
- }
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length;
- length = local_mblen (ibp, limit - ibp);
- if (length > 1)
- ibp += (length - 1);
-#endif
- }
- }
- break;
- }
- }
-
- /* Ordinary C comment. Skip it, optionally copying it to output. */
-
- start_line = ip->lineno;
-
- ++ibp; /* Skip the star. */
-
- /* If this cpp is for lint, we peek inside the comments: */
- if (for_lint) {
- const U_CHAR *argbp;
- int cmdlen, arglen;
- const char *lintcmd =
- get_lintcmd (ibp, limit, &argbp, &arglen, &cmdlen);
-
- if (lintcmd != NULL) {
- op->bufp = obp;
- check_expand (op, cmdlen + arglen + 14);
- obp = op->bufp;
- /* I believe it is always safe to emit this newline: */
- obp[-1] = '\n';
- bcopy ("#pragma lint ", (char *) obp, 13);
- obp += 13;
- bcopy (lintcmd, (char *) obp, cmdlen);
- obp += cmdlen;
-
- if (arglen != 0) {
- *(obp++) = ' ';
- bcopy (argbp, (char *) obp, arglen);
- obp += arglen;
- }
-
- /* OK, now bring us back to the state we were in before we entered
- this branch. We need #line because the #pragma's newline always
- messes up the line count. */
- op->bufp = obp;
- output_line_directive (ip, op, 0, same_file);
- check_expand (op, limit - ibp + 2);
- obp = op->bufp;
- *(obp++) = '/';
- }
- }
-
- /* Comments are equivalent to spaces.
- Note that we already output the slash; we might not want it.
- For -traditional, a comment is equivalent to nothing. */
- if (! put_out_comments) {
- if (traditional)
- obp--;
- else
- obp[-1] = ' ';
- }
- else
- *obp++ = '*';
-
- {
- U_CHAR *before_bp = ibp;
-
- for (;;) {
- switch (*ibp++) {
- case '*':
- if (ibp[-2] == '/' && warn_comments)
- warning ("`/*' within comment");
- if (*ibp == '\\')
- newline_fix (ibp);
- if (*ibp == '/')
- goto comment_end;
- break;
-
- case '\n':
- ++ip->lineno;
- /* Copy the newline into the output buffer, in order to
- avoid the pain of a #line every time a multiline comment
- is seen. */
- if (!put_out_comments)
- *obp++ = '\n';
- ++op->lineno;
- break;
-
- case 0:
- if (limit < ibp) {
- error_with_line (line_for_error (start_line),
- "unterminated comment");
- goto limit_reached;
- }
- break;
-#ifdef MULTIBYTE_CHARS
- default:
- {
- int length;
- length = local_mblen (ibp, limit - ibp);
- if (length > 1)
- ibp += (length - 1);
- }
- break;
-#endif
- }
- }
- comment_end:
-
- ibp++;
- if (put_out_comments) {
- bcopy ((const PTR) before_bp, (PTR) obp, ibp - before_bp);
- obp += ibp - before_bp;
- }
- }
- break;
-
- case '$':
- if (! is_idchar['$'])
- goto randomchar;
- if (pedantic)
- pedwarn ("`$' in identifier");
- goto letter;
-
- case '0': case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9':
- /* If digit is not part of identifier, it starts a number,
- which means that following letters are not an identifier.
- "0x5" does not refer to an identifier "x5".
- So copy all alphanumerics that follow without accumulating
- as an identifier. Periods also, for sake of "3.e7". */
-
- if (ident_length == 0) {
- for (;;) {
- if (!ip->macro) {
- while (ibp[0] == '\\' && ibp[1] == '\n') {
- ++ip->lineno;
- ibp += 2;
- }
- }
- c = *ibp++;
- if (!is_idchar[c] && c != '.') {
- --ibp;
- break;
- }
- *obp++ = c;
- /* A sign can be part of a preprocessing number
- if it follows an `e' or `p'. */
- if (c == 'e' || c == 'E' || c == 'p' || c == 'P') {
- if (!ip->macro) {
- while (ibp[0] == '\\' && ibp[1] == '\n') {
- ++ip->lineno;
- ibp += 2;
- }
- }
- if (*ibp == '+' || *ibp == '-') {
- *obp++ = *ibp++;
- /* But traditional C does not let the token go past the sign,
- and C89 does not allow `p'. */
- if (traditional || (c89 && (c == 'p' || c == 'P')))
- break;
- }
- }
- }
- break;
- }
- /* fall through */
-
- case '_':
- case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
- case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
- case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
- case 's': case 't': case 'u': case 'v': case 'w': case 'x':
- case 'y': case 'z':
- case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
- case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
- case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
- case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
- case 'Y': case 'Z':
- letter:
- ident_length++;
- /* Compute step of hash function, to avoid a proc call on every token */
- hash = HASHSTEP (hash, c);
- break;
-
- case '\n':
- if (ip->fname == 0 && *ibp == '-') {
- /* Newline - inhibits expansion of preceding token.
- If expanding a macro arg, we keep the newline -.
- In final output, it is deleted.
- We recognize Newline - in macro bodies and macro args. */
- if (! concatenated) {
- ident_length = 0;
- hash = 0;
- }
- ibp++;
- if (!output_marks) {
- obp--;
- } else {
- /* If expanding a macro arg, keep the newline -. */
- *obp++ = '-';
- }
- break;
- }
-
- /* If reprocessing a macro expansion, newline is a special marker. */
- else if (ip->macro != 0) {
- /* Newline White is a "funny space" to separate tokens that are
- supposed to be separate but without space between.
- Here White means any whitespace character.
- Newline - marks a recursive macro use that is not
- supposed to be expandable. */
-
- if (is_space[*ibp]) {
- /* Newline Space does not prevent expansion of preceding token
- so expand the preceding token and then come back. */
- if (ident_length > 0)
- goto specialchar;
-
- /* If generating final output, newline space makes a space. */
- if (!output_marks) {
- obp[-1] = *ibp++;
- /* And Newline Newline makes a newline, so count it. */
- if (obp[-1] == '\n')
- op->lineno++;
- } else {
- /* If expanding a macro arg, keep the newline space.
- If the arg gets stringified, newline space makes nothing. */
- *obp++ = *ibp++;
- }
- } else abort (); /* Newline followed by something random? */
- break;
- }
-
- /* If there is a pending identifier, handle it and come back here. */
- if (ident_length > 0)
- goto specialchar;
-
- beg_of_line = ibp;
-
- /* Update the line counts and output a #line if necessary. */
- ++ip->lineno;
- ++op->lineno;
- if (ip->lineno != op->lineno) {
- op->bufp = obp;
- output_line_directive (ip, op, 1, same_file);
- check_expand (op, limit - ibp);
- obp = op->bufp;
- }
- break;
-
- /* Come here either after (1) a null character that is part of the input
- or (2) at the end of the input, because there is a null there. */
- case 0:
- if (ibp <= limit)
- /* Our input really contains a null character. */
- goto randomchar;
-
- limit_reached:
- /* At end of a macro-expansion level, pop it and read next level. */
- if (ip->macro != 0) {
- obp--;
- ibp--;
- /* If traditional, and we have an identifier that ends here,
- process it now, so we get the right error for recursion. */
- if (traditional && ident_length
- && ! is_idchar[*instack[indepth - 1].bufp]) {
- redo_char = 1;
- goto randomchar;
- }
- POPMACRO;
- RECACHE;
- break;
- }
-
- /* If we don't have a pending identifier,
- return at end of input. */
- if (ident_length == 0) {
- obp--;
- ibp--;
- op->bufp = obp;
- ip->bufp = ibp;
- goto ending;
- }
-
- /* If we do have a pending identifier, just consider this null
- a special character and arrange to dispatch on it again.
- The second time, IDENT_LENGTH will be zero so we will return. */
-
- /* Fall through */
-
-specialchar:
-
- /* Handle the case of a character such as /, ', " or null
- seen following an identifier. Back over it so that
- after the identifier is processed the special char
- will be dispatched on again. */
-
- ibp--;
- obp--;
- redo_char = 1;
-
- default:
-
-randomchar:
-
- if (ident_length > 0) {
- register HASHNODE *hp;
-
- /* We have just seen an identifier end. If it's a macro, expand it.
-
- IDENT_LENGTH is the length of the identifier
- and HASH is its hash code.
-
- The identifier has already been copied to the output,
- so if it is a macro we must remove it.
-
- If REDO_CHAR is 0, the char that terminated the identifier
- has been skipped in the output and the input.
- OBP-IDENT_LENGTH-1 points to the identifier.
- If the identifier is a macro, we must back over the terminator.
-
- If REDO_CHAR is 1, the terminating char has already been
- backed over. OBP-IDENT_LENGTH points to the identifier. */
-
- if (!pcp_outfile || pcp_inside_if) {
- for (hp = hashtab[MAKE_POS (hash) % HASHSIZE]; hp != NULL;
- hp = hp->next) {
-
- if (hp->length == ident_length) {
- int obufp_before_macroname;
- int op_lineno_before_macroname;
- register int i = ident_length;
- register U_CHAR *p = hp->name;
- register U_CHAR *q = obp - i;
- int disabled;
-
- if (! redo_char)
- q--;
-
- do { /* All this to avoid a strncmp () */
- if (*p++ != *q++)
- goto hashcollision;
- } while (--i);
-
- /* We found a use of a macro name.
- see if the context shows it is a macro call. */
-
- /* Back up over terminating character if not already done. */
- if (! redo_char) {
- ibp--;
- obp--;
- }
-
- /* Save this as a displacement from the beginning of the output
- buffer. We can not save this as a position in the output
- buffer, because it may get realloc'ed by RECACHE. */
- obufp_before_macroname = (obp - op->buf) - ident_length;
- op_lineno_before_macroname = op->lineno;
-
- if (hp->type == T_PCSTRING) {
- pcstring_used (hp); /* Mark the definition of this key
- as needed, ensuring that it
- will be output. */
- break; /* Exit loop, since the key cannot have a
- definition any longer. */
- }
-
- /* Record whether the macro is disabled. */
- disabled = hp->type == T_DISABLED;
-
- /* This looks like a macro ref, but if the macro was disabled,
- just copy its name and put in a marker if requested. */
-
- if (disabled) {
-#if 0
- /* This error check caught useful cases such as
- #define foo(x,y) bar (x (y,0), y)
- foo (foo, baz) */
- if (traditional)
- error ("recursive use of macro `%s'", hp->name);
-#endif
-
- if (output_marks) {
- op->bufp = obp;
- check_expand (op, limit - ibp + 2);
- obp = op->bufp;
- *obp++ = '\n';
- *obp++ = '-';
- }
- break;
- }
-
- /* If macro wants an arglist, verify that a '(' follows.
- first skip all whitespace, copying it to the output
- after the macro name. Then, if there is no '(',
- decide this is not a macro call and leave things that way. */
- if ((hp->type == T_MACRO || hp->type == T_DISABLED)
- && hp->value.defn->nargs >= 0)
- {
- U_CHAR *old_ibp = ibp;
- U_CHAR *old_obp = obp;
- int old_iln = ip->lineno;
- int old_oln = op->lineno;
-
- while (1) {
- /* Scan forward over whitespace, copying it to the output. */
- if (ibp == limit && ip->macro != 0) {
- POPMACRO;
- RECACHE;
- old_ibp = ibp;
- old_obp = obp;
- old_iln = ip->lineno;
- old_oln = op->lineno;
- }
- else if (is_space[*ibp]) {
- *obp++ = *ibp++;
- if (ibp[-1] == '\n') {
- if (ip->macro == 0) {
- /* Newline in a file. Count it. */
- ++ip->lineno;
- ++op->lineno;
- } else if (!output_marks) {
- /* A newline mark, and we don't want marks
- in the output. If it is newline-hyphen,
- discard it entirely. Otherwise, it is
- newline-whitechar, so keep the whitechar. */
- obp--;
- if (*ibp == '-')
- ibp++;
- else {
- if (*ibp == '\n')
- ++op->lineno;
- *obp++ = *ibp++;
- }
- } else {
- /* A newline mark; copy both chars to the output. */
- *obp++ = *ibp++;
- }
- }
- }
- else if (ip->macro)
- break;
- else if (*ibp == '/') {
- /* If a comment, copy it unchanged or discard it. */
- if (ibp[1] == '\\')
- newline_fix (ibp + 1);
- if (ibp[1] == '*') {
- if (put_out_comments) {
- *obp++ = '/';
- *obp++ = '*';
- } else if (! traditional) {
- *obp++ = ' ';
- }
- for (ibp += 2; ibp < limit; ibp++) {
- /* We need not worry about newline-marks,
- since they are never found in comments. */
- if (ibp[0] == '*') {
- if (ibp[1] == '\\')
- newline_fix (ibp + 1);
- if (ibp[1] == '/') {
- ibp += 2;
- if (put_out_comments) {
- *obp++ = '*';
- *obp++ = '/';
- }
- break;
- }
- }
- else if (*ibp == '\n') {
- /* Newline in a file. Count it. */
- ++ip->lineno;
- ++op->lineno;
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length;
- length = local_mblen (ibp, limit - ibp);
- if (length > 1)
- {
- if (put_out_comments)
- {
- bcopy (ibp, obp, length - 1);
- obp += length - 1;
- }
- ibp += (length - 1);
- }
-#endif
- }
- if (put_out_comments)
- *obp++ = *ibp;
- }
- } else if (ibp[1] == '/' && cplusplus_comments) {
- if (put_out_comments) {
- *obp++ = '/';
- *obp++ = '/';
- } else if (! traditional) {
- *obp++ = ' ';
- }
- for (ibp += 2; ; ibp++)
- {
- if (*ibp == '\n')
- break;
- if (*ibp == '\\' && ibp[1] == '\n')
- {
- if (put_out_comments)
- *obp++ = *ibp++;
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length;
- length = local_mblen (ibp, limit - ibp);
- if (length > 1)
- {
- if (put_out_comments)
- {
- bcopy (ibp, obp, length - 1);
- obp += length - 1;
- }
- ibp += (length - 1);
- }
-#endif
- }
- if (put_out_comments)
- *obp++ = *ibp;
- }
- } else
- break;
- }
- else if (ibp[0] == '\\' && ibp[1] == '\n') {
- ibp += 2;
- ++ip->lineno;
- }
- else break;
- }
- if (*ibp != '(') {
- /* It isn't a macro call.
- Put back the space that we just skipped. */
- ibp = old_ibp;
- obp = old_obp;
- ip->lineno = old_iln;
- op->lineno = old_oln;
- /* Exit the for loop. */
- break;
- }
- }
-
- /* This is now known to be a macro call.
- Discard the macro name from the output,
- along with any following whitespace just copied,
- but preserve newlines if not outputting marks since this
- is more likely to do the right thing with line numbers. */
- obp = op->buf + obufp_before_macroname;
- if (output_marks)
- op->lineno = op_lineno_before_macroname;
- else {
- int newlines = op->lineno - op_lineno_before_macroname;
- while (0 < newlines--)
- *obp++ = '\n';
- }
-
- /* Prevent accidental token-pasting with a character
- before the macro call. */
- if (!traditional && obp != op->buf) {
- switch (obp[-1]) {
- case '!': case '%': case '&': case '*':
- case '+': case '-': case '.': case '/':
- case ':': case '<': case '=': case '>':
- case '^': case '|':
- /* If we are expanding a macro arg, make a newline marker
- to separate the tokens. If we are making real output,
- a plain space will do. */
- if (output_marks)
- *obp++ = '\n';
- *obp++ = ' ';
- }
- }
-
- /* Expand the macro, reading arguments as needed,
- and push the expansion on the input stack. */
- ip->bufp = ibp;
- op->bufp = obp;
- macroexpand (hp, op);
-
- /* Reexamine input stack, since macroexpand has pushed
- a new level on it. */
- obp = op->bufp;
- RECACHE;
- break;
- }
-hashcollision:
- ;
- } /* End hash-table-search loop */
- }
- ident_length = hash = 0; /* Stop collecting identifier */
- redo_char = 0;
- concatenated = 0;
- } /* End if (ident_length > 0) */
- } /* End switch */
- } /* End per-char loop */
-
- /* Come here to return -- but first give an error message
- if there was an unterminated successful conditional. */
- ending:
- if (if_stack != ip->if_stack)
- {
- const char *str;
-
- switch (if_stack->type)
- {
- case T_IF:
- str = "if";
- break;
- case T_IFDEF:
- str = "ifdef";
- break;
- case T_IFNDEF:
- str = "ifndef";
- break;
- case T_ELSE:
- str = "else";
- break;
- case T_ELIF:
- str = "elif";
- break;
- default:
- abort ();
- }
-
- error_with_line (line_for_error (if_stack->lineno),
- "unterminated `#%s' conditional", str);
- }
- if_stack = ip->if_stack;
-}
-\f
-/*
- * Rescan a string into a temporary buffer and return the result
- * as a FILE_BUF. Note this function returns a struct, not a pointer.
- *
- * OUTPUT_MARKS nonzero means keep Newline markers found in the input
- * and insert such markers when appropriate. See `rescan' for details.
- * OUTPUT_MARKS is 1 for macroexpanding a macro argument separately
- * before substitution; it is 0 for other uses.
- */
-static FILE_BUF
-expand_to_temp_buffer (buf, limit, output_marks, assertions)
- const U_CHAR *buf;
- const U_CHAR *limit;
- int output_marks, assertions;
-{
- register FILE_BUF *ip;
- FILE_BUF obuf;
- int length = limit - buf;
- U_CHAR *buf1;
- int odepth = indepth;
- int save_assertions_flag = assertions_flag;
-
- assertions_flag = assertions;
-
- if (length < 0)
- abort ();
-
- /* Set up the input on the input stack. */
-
- buf1 = (U_CHAR *) alloca (length + 1);
- {
- register const U_CHAR *p1 = buf;
- register U_CHAR *p2 = buf1;
-
- while (p1 != limit)
- *p2++ = *p1++;
- }
- buf1[length] = 0;
-
- /* Set up to receive the output. */
-
- obuf.length = length * 2 + 100; /* Usually enough. Why be stingy? */
- obuf.bufp = obuf.buf = (U_CHAR *) xmalloc (obuf.length);
- obuf.nominal_fname = 0;
- obuf.inc = 0;
- obuf.dir = 0;
- obuf.fname = 0;
- obuf.macro = 0;
- obuf.if_stack = 0;
- obuf.free_ptr = 0;
- obuf.system_header_p = 0;
-
- CHECK_DEPTH ({return obuf;});
-
- ++indepth;
-
- ip = &instack[indepth];
- ip->fname = 0;
- ip->nominal_fname = 0;
- ip->nominal_fname_len = 0;
- ip->inc = 0;
- ip->system_header_p = 0;
- ip->macro = 0;
- ip->free_ptr = 0;
- ip->length = length;
- ip->buf = ip->bufp = buf1;
- ip->if_stack = if_stack;
-
- ip->lineno = obuf.lineno = 1;
-
- /* Scan the input, create the output. */
- rescan (&obuf, output_marks);
-
- /* Pop input stack to original state. */
- --indepth;
-
- if (indepth != odepth)
- abort ();
-
- assertions_flag = save_assertions_flag;
- return obuf;
-}
-\f
-/*
- * Process a # directive. Expects IP->bufp to point after the '#', as in
- * `#define foo bar'. Passes to the directive handler
- * (do_define, do_include, etc.): the addresses of the 1st and
- * last chars of the directive (starting immediately after the #
- * keyword), plus op and the keyword table pointer. If the directive
- * contains comments it is copied into a temporary buffer sans comments
- * and the temporary buffer is passed to the directive handler instead.
- * Likewise for backslash-newlines.
- *
- * Returns nonzero if this was a known # directive.
- * Otherwise, returns zero, without advancing the input pointer.
- */
-
-static int
-handle_directive (ip, op)
- FILE_BUF *ip, *op;
-{
- register U_CHAR *bp, *cp;
- register struct directive *kt;
- register int ident_length;
- U_CHAR *resume_p;
-
- /* Nonzero means we must copy the entire directive
- to get rid of comments or backslash-newlines. */
- int copy_directive = 0;
-
- U_CHAR *ident, *after_ident;
-
- bp = ip->bufp;
-
- /* Record where the directive started. do_xifdef needs this. */
- directive_start = bp - 1;
-
- ignore_escape_flag = 1;
-
- /* Skip whitespace and \-newline. */
- while (1) {
- if (is_hor_space[*bp]) {
- if (*bp != ' ' && *bp != '\t' && pedantic)
- pedwarn_strange_white_space (*bp);
- bp++;
- } else if (*bp == '/') {
- if (bp[1] == '\\')
- newline_fix (bp + 1);
- if (! (bp[1] == '*' || (cplusplus_comments && bp[1] == '/')))
- break;
- ip->bufp = bp + 2;
- skip_to_end_of_comment (ip, &ip->lineno, 0);
- bp = ip->bufp;
- } else if (*bp == '\\' && bp[1] == '\n') {
- bp += 2; ip->lineno++;
- } else break;
- }
-
- /* Now find end of directive name.
- If we encounter a backslash-newline, exchange it with any following
- symbol-constituents so that we end up with a contiguous name. */
-
- cp = bp;
- while (1) {
- if (is_idchar[*cp])
- cp++;
- else {
- if (*cp == '\\')
- name_newline_fix (cp);
- if (is_idchar[*cp])
- cp++;
- else break;
- }
- }
- ident_length = cp - bp;
- ident = bp;
- after_ident = cp;
-
- /* A line of just `#' becomes blank. */
-
- if (ident_length == 0 && *after_ident == '\n') {
- ip->bufp = after_ident;
- return 1;
- }
-
- if (ident_length == 0 || !is_idstart[*ident]) {
- U_CHAR *p = ident;
- while (is_idchar[*p]) {
- if (*p < '0' || *p > '9')
- break;
- p++;
- }
- /* Handle # followed by a line number. */
- if (p != ident && !is_idchar[*p]) {
- static struct directive line_directive_table[] = {
- { 4, do_line, "line", T_LINE},
- };
- if (pedantic)
- pedwarn ("`#' followed by integer");
- after_ident = ident;
- kt = line_directive_table;
- ignore_escape_flag = 0;
- goto old_linenum;
- }
-
- /* Avoid error for `###' and similar cases unless -pedantic. */
- if (p == ident) {
- while (*p == '#' || is_hor_space[*p]) p++;
- if (*p == '\n') {
- if (pedantic && !lang_asm)
- warning ("invalid preprocessing directive");
- return 0;
- }
- }
-
- if (!lang_asm)
- error ("invalid preprocessing directive name");
-
- return 0;
- }
-
- /*
- * Decode the keyword and call the appropriate expansion
- * routine, after moving the input pointer up to the next line.
- */
- for (kt = directive_table; kt->length > 0; kt++) {
- if (kt->length == ident_length && !bcmp (kt->name, ident, ident_length)) {
- register U_CHAR *buf;
- register U_CHAR *limit;
- int unterminated;
- int junk;
- int *already_output;
-
- /* Nonzero means do not delete comments within the directive.
- #define needs this when -traditional. */
- int keep_comments;
-
- old_linenum:
-
- limit = ip->buf + ip->length;
- unterminated = 0;
- already_output = 0;
- keep_comments = traditional && kt->type == T_DEFINE;
- /* #import is defined only in Objective C, or when on the NeXT. */
- if (kt->type == T_IMPORT
- && !(objc || lookup ((const U_CHAR *) "__NeXT__", -1, -1)))
- break;
-
- /* Find the end of this directive (first newline not backslashed
- and not in a string or comment).
- Set COPY_DIRECTIVE if the directive must be copied
- (it contains a backslash-newline or a comment). */
-
- buf = bp = after_ident;
- while (bp < limit) {
- register U_CHAR c = *bp++;
- switch (c) {
- case '\\':
- if (*bp == '\n') {
- ip->lineno++;
- copy_directive = 1;
- bp++;
- } else if (traditional && bp < limit)
- bp++;
- break;
-
- case '"':
- /* "..." is special for #include. */
- if (IS_INCLUDE_DIRECTIVE_TYPE (kt->type)) {
- while (bp < limit && *bp != '\n') {
- if (*bp == '"') {
- bp++;
- break;
- }
- if (*bp == '\\' && bp[1] == '\n') {
- ip->lineno++;
- copy_directive = 1;
- bp++;
- }
- bp++;
- }
- break;
- }
- /* Fall through. */
- case '\'':
- bp = skip_quoted_string (bp - 1, limit, ip->lineno, &ip->lineno, ©_directive, &unterminated);
- /* Don't bother calling the directive if we already got an error
- message due to unterminated string. Skip everything and pretend
- we called the directive. */
- if (unterminated) {
- if (traditional) {
- /* Traditional preprocessing permits unterminated strings. */
- ip->bufp = bp;
- goto endloop1;
- }
- ip->bufp = bp;
- return 1;
- }
- break;
-
- /* <...> is special for #include. */
- case '<':
- if (! IS_INCLUDE_DIRECTIVE_TYPE (kt->type))
- break;
- while (bp < limit && *bp != '>' && *bp != '\n') {
- if (*bp == '\\' && bp[1] == '\n') {
- ip->lineno++;
- copy_directive = 1;
- bp++;
- }
- bp++;
- }
- break;
-
- case '/':
- if (*bp == '\\')
- newline_fix (bp);
- if (*bp == '*'
- || (cplusplus_comments && *bp == '/')) {
- U_CHAR *obp = bp - 1;
- ip->bufp = bp + 1;
- skip_to_end_of_comment (ip, &ip->lineno, 0);
- bp = ip->bufp;
- /* No need to copy the directive because of a comment at the end;
- just don't include the comment in the directive. */
- if (!put_out_comments) {
- U_CHAR *p;
- for (p = bp; *p == ' ' || *p == '\t'; p++)
- continue;
- if (*p == '\n') {
- bp = obp;
- goto endloop1;
- }
- }
- /* Don't remove the comments if -traditional. */
- if (! keep_comments)
- copy_directive++;
- }
- break;
-
- case '\f':
- case '\r':
- case '\v':
- if (pedantic)
- pedwarn_strange_white_space (c);
- break;
-
- case '\n':
- --bp; /* Point to the newline */
- ip->bufp = bp;
- goto endloop1;
- }
- }
- ip->bufp = bp;
-
- endloop1:
- resume_p = ip->bufp;
- /* BP is the end of the directive.
- RESUME_P is the next interesting data after the directive.
- A comment may come between. */
-
- /* If a directive should be copied through, and -C was given,
- pass it through before removing comments. */
- if (!no_output && put_out_comments
- && ((kt->type == T_DEFINE || kt->type == T_UNDEF)
- ? dump_macros == dump_definitions
- : IS_INCLUDE_DIRECTIVE_TYPE (kt->type) ? dump_includes
- : kt->type == T_PRAGMA)) {
- int len;
-
- /* Output directive name. */
- check_expand (op, kt->length + 2);
- /* Make sure # is at the start of a line */
- if (op->bufp > op->buf && op->bufp[-1] != '\n') {
- op->lineno++;
- *op->bufp++ = '\n';
- }
- *op->bufp++ = '#';
- bcopy (kt->name, op->bufp, kt->length);
- op->bufp += kt->length;
-
- /* Output arguments. */
- len = (bp - buf);
- check_expand (op, len);
- bcopy (buf, (char *) op->bufp, len);
- op->bufp += len;
- /* Take account of any (escaped) newlines just output. */
- while (--len >= 0)
- if (buf[len] == '\n')
- op->lineno++;
-
- already_output = &junk;
- } /* Don't we need a newline or #line? */
-
- if (copy_directive) {
- register U_CHAR *xp = buf;
- /* Need to copy entire directive into temp buffer before dispatching */
-
- /* room for directive plus some slop */
- cp = (U_CHAR *) alloca (2 * (bp - buf) + 5);
- buf = cp;
-
- /* Copy to the new buffer, deleting comments
- and backslash-newlines (and whitespace surrounding the latter
- if outside of char and string constants). */
-
- while (xp < bp) {
- register U_CHAR c = *xp++;
- *cp++ = c;
-
- switch (c) {
- case '\n':
- abort (); /* A bare newline should never part of the line. */
- break;
-
- /* <...> is special for #include. */
- case '<':
- if (! IS_INCLUDE_DIRECTIVE_TYPE (kt->type))
- break;
- while (xp < bp && c != '>') {
- c = *xp++;
- if (c == '\\' && xp < bp && *xp == '\n')
- xp++;
- else
- *cp++ = c;
- }
- break;
-
- case '\\':
- if (*xp == '\n') {
- xp++;
- cp--;
- if (cp != buf && is_hor_space[cp[-1]]) {
- while (cp - 1 != buf && is_hor_space[cp[-2]])
- cp--;
- SKIP_WHITE_SPACE (xp);
- } else if (is_hor_space[*xp]) {
- *cp++ = *xp++;
- SKIP_WHITE_SPACE (xp);
- }
- } else if (traditional && xp < bp) {
- *cp++ = *xp++;
- }
- break;
-
- case '\'':
- case '\"':
- {
- int backslash_newlines_p = 0;
-
- register const U_CHAR *bp1
- = skip_quoted_string (xp - 1, bp, ip->lineno,
- NULL_PTR, &backslash_newlines_p,
- NULL_PTR);
- if (backslash_newlines_p)
- while (xp != bp1)
- {
- /* With something like:
-
- #define X "a\
- b"
-
- we should still remove the backslash-newline
- pair as part of phase two. */
- if (xp[0] == '\\' && xp[1] == '\n')
- xp += 2;
- else
- *cp++ = *xp++;
- }
- else
- /* This is the same as the loop above, but taking
- advantage of the fact that we know there are no
- backslash-newline pairs. */
- while (xp != bp1)
- *cp++ = *xp++;
- }
- break;
-
- case '/':
- if (*xp == '*'
- || (cplusplus_comments && *xp == '/')) {
- ip->bufp = xp + 1;
- /* If we already copied the directive through,
- already_output != 0 prevents outputting comment now. */
- skip_to_end_of_comment (ip, already_output, 0);
- if (keep_comments)
- while (xp != ip->bufp)
- *cp++ = *xp++;
- /* Delete or replace the slash. */
- else if (traditional)
- cp--;
- else
- cp[-1] = ' ';
- xp = ip->bufp;
- }
- }
- }
-
- /* Null-terminate the copy. */
-
- *cp = 0;
- } else
- cp = bp;
-
- ip->bufp = resume_p;
-
- /* Some directives should be written out for cc1 to process,
- just as if they were not defined. And sometimes we're copying
- directives through. */
-
- if (!no_output && already_output == 0
- && ((kt->type == T_DEFINE || kt->type == T_UNDEF)
- ? (int) dump_names <= (int) dump_macros
- : IS_INCLUDE_DIRECTIVE_TYPE (kt->type) ? dump_includes
- : kt->type == T_PRAGMA)) {
- int len;
-
- /* Output directive name. */
- check_expand (op, kt->length + 1);
- *op->bufp++ = '#';
- bcopy (kt->name, (char *) op->bufp, kt->length);
- op->bufp += kt->length;
-
- if (kt->type == T_DEFINE && dump_macros == dump_names) {
- /* Output `#define name' only. */
- U_CHAR *xp = buf;
- U_CHAR *yp;
- SKIP_WHITE_SPACE (xp);
- yp = xp;
- while (is_idchar[*xp]) xp++;
- len = (xp - yp);
- check_expand (op, len + 1);
- *op->bufp++ = ' ';
- bcopy (yp, (char *) op->bufp, len);
- } else {
- /* Output entire directive. */
- len = (cp - buf);
- check_expand (op, len);
- bcopy (buf, (char *) op->bufp, len);
- }
- op->bufp += len;
- }
-
- /* Call the appropriate directive handler. buf now points to
- either the appropriate place in the input buffer, or to
- the temp buffer if it was necessary to make one. cp
- points to the first char after the contents of the (possibly
- copied) directive, in either case. */
- (*kt->func) (buf, cp, op, kt);
- check_expand (op, ip->length - (ip->bufp - ip->buf));
-
- return 1;
- }
- }
-
- /* It is deliberate that we don't warn about undefined directives.
- That is the responsibility of cc1. */
- return 0;
-}
-\f
-static struct tm *
-timestamp ()
-{
- static struct tm tmbuf;
- if (! tmbuf.tm_mday) {
- time_t t = time ((time_t *) 0);
- struct tm *tm = localtime (&t);
- if (tm)
- tmbuf = *tm;
- else {
- /* Use 0000-01-01 00:00:00 if local time is not available. */
- tmbuf.tm_year = -1900;
- tmbuf.tm_mday = 1;
- }
- }
- return &tmbuf;
-}
-
-static const char * const monthnames[] = {
- "Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
-};
-
-/*
- * expand things like __FILE__. Place the expansion into the output
- * buffer *without* rescanning.
- */
-
-static void
-special_symbol (hp, op)
- HASHNODE *hp;
- FILE_BUF *op;
-{
- const char *buf;
- int i, len;
- int true_indepth;
- FILE_BUF *ip = NULL;
- struct tm *timebuf;
-
- int paren = 0; /* For special `defined' keyword */
-
- if (pcp_outfile && pcp_inside_if
- && hp->type != T_SPEC_DEFINED && hp->type != T_CONST)
- error ("Predefined macro `%s' used inside `#if' during precompilation",
- hp->name);
-
- for (i = indepth; i >= 0; i--)
- if (instack[i].fname != NULL) {
- ip = &instack[i];
- break;
- }
- if (ip == NULL) {
- error ("cccp error: not in any file?!");
- return; /* the show must go on */
- }
-
- switch (hp->type) {
- case T_FILE:
- case T_BASE_FILE:
- {
- FILE_BUF *p = hp->type == T_FILE ? ip : &instack[0];
- const char *string = p->nominal_fname;
-
- if (string)
- {
- size_t string_len = p->nominal_fname_len;
- char *newbuf = (char *) alloca (3 + 4 * string_len);
- quote_string (newbuf, string, string_len);
- buf = newbuf;
- }
- else
- buf = "\"\"";
-
- break;
- }
-
- case T_INCLUDE_LEVEL:
- {
- /* Eight bytes ought to be more than enough */
- char *newbuf = (char *) alloca (8);
- true_indepth = 0;
- for (i = indepth; i >= 0; i--)
- if (instack[i].fname != NULL)
- true_indepth++;
- sprintf (newbuf, "%d", true_indepth - 1);
- buf = newbuf;
- }
- break;
-
- case T_VERSION:
- {
- char *newbuf = (char *) alloca (3 + strlen (version_string));
- sprintf (newbuf, "\"%s\"", version_string);
- buf = newbuf;
- }
- break;
-
-#ifndef NO_BUILTIN_SIZE_TYPE
- case T_SIZE_TYPE:
- buf = SIZE_TYPE;
- break;
-#endif
-
-#ifndef NO_BUILTIN_PTRDIFF_TYPE
- case T_PTRDIFF_TYPE:
- buf = PTRDIFF_TYPE;
- break;
-#endif
-
-#ifndef NO_BUILTIN_WCHAR_TYPE
- case T_WCHAR_TYPE:
- buf = wchar_type;
- break;
-#endif
-
- case T_USER_LABEL_PREFIX_TYPE:
- buf = user_label_prefix;
- break;
-
- case T_REGISTER_PREFIX_TYPE:
- buf = REGISTER_PREFIX;
- break;
-
- case T_IMMEDIATE_PREFIX_TYPE:
- buf = IMMEDIATE_PREFIX;
- break;
-
- case T_CONST:
- buf = hp->value.cpval;
-#ifdef STDC_0_IN_SYSTEM_HEADERS
- if (ip->system_header_p
- && hp->length == 8 && bcmp (hp->name, "__STDC__", 8) == 0
- && !lookup ((const U_CHAR *) "__STRICT_ANSI__", -1, -1))
- buf = "0";
-#endif
- if (pcp_inside_if && pcp_outfile)
- /* Output a precondition for this macro use */
- fprintf (pcp_outfile, "#define %s %s\n", hp->name, buf);
- break;
-
- case T_SPECLINE:
- {
- char *newbuf = (char *) alloca (10);
- sprintf (newbuf, "%d", ip->lineno);
- buf = newbuf;
- }
- break;
-
- case T_DATE:
- case T_TIME:
- {
- char *newbuf = (char *) alloca (20);
- timebuf = timestamp ();
- if (hp->type == T_DATE)
- sprintf (newbuf, "\"%s %2d %4d\"", monthnames[timebuf->tm_mon],
- timebuf->tm_mday, timebuf->tm_year + 1900);
- else
- sprintf (newbuf, "\"%02d:%02d:%02d\"", timebuf->tm_hour,
- timebuf->tm_min, timebuf->tm_sec);
- buf = newbuf;
- }
- break;
-
- case T_SPEC_DEFINED:
- buf = " 0 "; /* Assume symbol is not defined */
- ip = &instack[indepth];
- SKIP_WHITE_SPACE (ip->bufp);
- if (*ip->bufp == '(') {
- paren++;
- ip->bufp++; /* Skip over the paren */
- SKIP_WHITE_SPACE (ip->bufp);
- }
-
- if (!is_idstart[*ip->bufp])
- goto oops;
- if (ip->bufp[0] == 'L' && (ip->bufp[1] == '\'' || ip->bufp[1] == '"'))
- goto oops;
- if ((hp = lookup (ip->bufp, -1, -1))) {
- if (pcp_outfile && pcp_inside_if
- && (hp->type == T_CONST
- || (hp->type == T_MACRO && hp->value.defn->predefined)))
- /* Output a precondition for this macro use. */
- fprintf (pcp_outfile, "#define %s\n", hp->name);
- if (hp->type == T_POISON) {
- error("attempt to use poisoned `%s'.", hp->name);
- buf = " 0 ";
- } else {
- buf = " 1 ";
- }
- }
- else
- if (pcp_outfile && pcp_inside_if) {
- /* Output a precondition for this macro use */
- U_CHAR *cp = ip->bufp;
- fprintf (pcp_outfile, "#undef ");
- while (is_idchar[*cp]) /* Ick! */
- fputc (*cp++, pcp_outfile);
- putc ('\n', pcp_outfile);
- }
- while (is_idchar[*ip->bufp])
- ++ip->bufp;
- SKIP_WHITE_SPACE (ip->bufp);
- if (paren) {
- if (*ip->bufp != ')')
- goto oops;
- ++ip->bufp;
- }
- break;
-
- case T_POISON:
- error("attempt to use poisoned `%s'.", hp->name);
- buf = " 0 "; /* Consider poisoned symbol to not be defined */
- break;
-
-oops:
-
- error ("`defined' without an identifier");
- break;
-
- default:
- error ("cccp error: invalid special hash type"); /* time for gdb */
- abort ();
- }
- len = strlen (buf);
- check_expand (op, len);
- bcopy (buf, (char *) op->bufp, len);
- op->bufp += len;
-
- return;
-}
-
-\f
-/* Routines to handle #directives */
-
-/* Handle #include and #import.
- This function expects to see "fname" or <fname> on the input. */
-
-static int
-do_include (buf, limit, op, keyword)
- U_CHAR *buf, *limit;
- FILE_BUF *op;
- struct directive *keyword;
-{
- const U_CHAR *importing =
- keyword->type == T_IMPORT ? (const U_CHAR *) "" : (const U_CHAR *) 0;
- int skip_dirs = (keyword->type == T_INCLUDE_NEXT);
- static int import_warning = 0;
- char *fname; /* Dynamically allocated fname buffer */
- char *pcftry;
- char *pcfname;
- char *fbeg, *fend; /* Beginning and end of fname */
- U_CHAR *fin;
-
- struct file_name_list *search_start = include; /* Chain of dirs to search */
- struct file_name_list *dsp; /* First in chain, if #include "..." */
- struct file_name_list *searchptr = 0;
- size_t flen;
-
- int f = -3; /* file number */
- struct include_file *inc = 0;
-
- int retried = 0; /* Have already tried macro
- expanding the include line*/
- int angle_brackets = 0; /* 0 for "...", 1 for <...> */
-#ifdef VMS
- int vaxc_include = 0; /* 1 for token without punctuation */
-#endif
- int pcf = -1;
- char *pcfbuf;
- const char *pcfbuflimit;
- int pcfnum;
-
- if (pedantic && !instack[indepth].system_header_p)
- {
- if (importing)
- pedwarn ("ANSI C does not allow `#import'");
- if (skip_dirs)
- pedwarn ("ANSI C does not allow `#include_next'");
- }
-
- if (importing && warn_import && !inhibit_warnings
- && !instack[indepth].system_header_p && !import_warning) {
- import_warning = 1;
- warning ("using `#import' is not recommended");
- notice ("The fact that a certain header file need not be processed more than once\n\
-should be indicated in the header file, not where it is used.\n\
-The best way to do this is with a conditional of this form:\n\
-\n\
- #ifndef _FOO_H_INCLUDED\n\
- #define _FOO_H_INCLUDED\n\
- ... <real contents of file> ...\n\
- #endif /* Not _FOO_H_INCLUDED */\n\
-\n\
-Then users can use `#include' any number of times.\n\
-GNU C automatically avoids processing the file more than once\n\
-when it is equipped with such a conditional.\n");
- }
-
-get_filename:
-
- fin = buf;
- SKIP_WHITE_SPACE (fin);
- /* Discard trailing whitespace so we can easily see
- if we have parsed all the significant chars we were given. */
- while (limit != fin && is_hor_space[limit[-1]]) limit--;
- fbeg = fend = (char *) alloca (limit - fin);
-
- switch (*fin++) {
- case '\"':
- {
- FILE_BUF *fp;
- /* Copy the operand text, concatenating the strings. */
- {
- for (;;) {
- for (;;) {
- if (fin == limit)
- goto invalid_include_file_name;
- *fend = *fin++;
- if (*fend == '"')
- break;
- fend++;
- }
- if (fin == limit)
- break;
- /* If not at the end, there had better be another string. */
- /* Skip just horiz space, and don't go past limit. */
- while (fin != limit && is_hor_space[*fin]) fin++;
- if (fin != limit && *fin == '\"')
- fin++;
- else
- goto fail;
- }
- }
-
- /* We have "filename". Figure out directory this source
- file is coming from and put it on the front of the list. */
-
- /* If -I- was specified, don't search current dir, only spec'd ones. */
- if (ignore_srcdir) break;
-
- for (fp = &instack[indepth]; fp >= instack; fp--)
- {
- int n;
-
- if ((fp->nominal_fname) != NULL) {
- char *nam;
- /* Found a named file. Figure out dir of the file,
- and put it in front of the search list. */
- dsp = ((struct file_name_list *)
- alloca (sizeof (struct file_name_list)
- + fp->nominal_fname_len));
- strcpy (dsp->fname, fp->nominal_fname);
- simplify_filename (dsp->fname);
- nam = base_name (dsp->fname);
- *nam = 0;
-#ifdef VMS
- /* for hack_vms_include_specification(), a local
- dir specification must start with "./" on VMS. */
- if (nam == dsp->fname)
- {
- *nam++ = '.';
- *nam++ = '/';
- *nam = 0;
- }
-#endif
- /* But for efficiency's sake, do not insert the dir
- if it matches the search list's first dir. */
- dsp->next = search_start;
- if (!search_start || strcmp (dsp->fname, search_start->fname)) {
- search_start = dsp;
- n = nam - dsp->fname;
- if (n + INCLUDE_LEN_FUDGE > max_include_len)
- max_include_len = n + INCLUDE_LEN_FUDGE;
- }
- dsp[0].got_name_map = 0;
- break;
- }
- }
- break;
- }
-
- case '<':
- while (fin != limit && *fin != '>')
- *fend++ = *fin++;
- if (*fin == '>' && fin + 1 == limit) {
- angle_brackets = 1;
- /* If -I-, start with the first -I dir after the -I-. */
- search_start = first_bracket_include;
- break;
- }
- goto fail;
-
- default:
-#ifdef VMS
- /*
- * Support '#include xyz' like VAX-C to allow for easy use of all the
- * decwindow include files. It defaults to '#include <xyz.h>' (so the
- * code from case '<' is repeated here) and generates a warning.
- * (Note: macro expansion of `xyz' takes precedence.)
- */
- /* Note: The argument of ISALPHA() can be evaluated twice, so do
- the pre-decrement outside of the macro. */
- if (retried && (--fin, ISALPHA(*(U_CHAR *) (fin)))) {
- while (fin != limit && (!ISSPACE(*fin)))
- *fend++ = *fin++;
- warning ("VAX-C-style include specification found, use '#include <filename.h>' !");
- vaxc_include = 1;
- if (fin == limit) {
- angle_brackets = 1;
- /* If -I-, start with the first -I dir after the -I-. */
- search_start = first_bracket_include;
- break;
- }
- }
-#endif
-
- fail:
- if (! retried) {
- /* Expand buffer and then remove any newline markers.
- We can't just tell expand_to_temp_buffer to omit the markers,
- since it would put extra spaces in include file names. */
- U_CHAR *src;
- int errors_before_expansion = errors;
- FILE_BUF trybuf;
-
- trybuf = expand_to_temp_buffer (buf, limit, 1, 0);
- if (errors != errors_before_expansion) {
- free (trybuf.buf);
- goto invalid_include_file_name;
- }
- src = trybuf.buf;
- buf = (U_CHAR *) alloca (trybuf.bufp - trybuf.buf + 1);
- limit = buf;
- while (src != trybuf.bufp) {
- switch ((*limit++ = *src++)) {
- case '\n':
- limit--;
- src++;
- break;
-
- case '\'':
- case '\"':
- {
- const U_CHAR *src1 = skip_quoted_string (src - 1, trybuf.bufp, 0,
- NULL_PTR, NULL_PTR, NULL_PTR);
- while (src != src1)
- *limit++ = *src++;
- }
- break;
- }
- }
- *limit = 0;
- free (trybuf.buf);
- retried = 1;
- goto get_filename;
- }
-
- invalid_include_file_name:
- error ("`#%s' expects \"FILENAME\" or <FILENAME>", keyword->name);
- return 0;
- }
-
- /* For #include_next, skip in the search path
- past the dir in which the containing file was found. */
- if (skip_dirs) {
- FILE_BUF *fp;
- for (fp = &instack[indepth]; fp >= instack; fp--)
- if (fp->fname != NULL) {
- /* fp->dir is null if the containing file was specified
- with an absolute file name. In that case, don't skip anything. */
- if (fp->dir)
- search_start = fp->dir->next;
- break;
- }
- }
-
- *fend = 0;
- flen = simplify_filename (fbeg);
-
- if (flen == 0)
- {
- error ("empty file name in `#%s'", keyword->name);
- return 0;
- }
-
- /* Allocate this permanently, because it gets stored in the definitions
- of macros. */
- fname = xmalloc (max_include_len + flen + 1);
- /* + 1 above for terminating null. */
-
- system_include_depth += angle_brackets;
-
- /* If specified file name is absolute, just open it. */
-
- if (absolute_filename (fbeg)) {
- strcpy (fname, fbeg);
- f = open_include_file (fname, NULL_PTR, importing, &inc);
- } else {
-
- struct bypass_dir {
- struct bypass_dir *next;
- char *fname;
- struct file_name_list *searchptr;
- } **bypass_slot = 0;
-
- /* Search directory path, trying to open the file.
- Copy each filename tried into FNAME. */
-
- for (searchptr = search_start; searchptr; searchptr = searchptr->next) {
-
- if (searchptr == first_bracket_include) {
- /* Go to bypass directory if we know we've seen this file before. */
- static struct bypass_dir *bypass_hashtab[INCLUDE_HASHSIZE];
- struct bypass_dir *p;
- bypass_slot = &bypass_hashtab[hashf ((U_CHAR *) fbeg, flen,
- INCLUDE_HASHSIZE)];
- for (p = *bypass_slot; p; p = p->next)
- if (!strcmp (fbeg, p->fname)) {
- searchptr = p->searchptr;
- bypass_slot = 0;
- break;
- }
- }
-
-#ifdef VMS
- /* Change this 1/2 Unix 1/2 VMS file specification into a
- full VMS file specification */
- if (searchptr->fname[0])
- {
- strcpy (fname, searchptr->fname);
- if (fname[strlen (fname) - 1] == ':')
- {
- char *slashp;
- slashp = strchr (fbeg, '/');
-
- /* start at root-dir of logical device if no path given. */
- if (slashp == 0)
- strcat (fname, "[000000]");
- }
- strcat (fname, fbeg);
-
- /* Fix up the filename */
- hack_vms_include_specification (fname, vaxc_include);
- }
- else
- {
- /* This is a normal VMS filespec, so use it unchanged. */
- strcpy (fname, fbeg);
- /* if it's '#include filename', add the missing .h */
- if (vaxc_include && index(fname,'.')==NULL)
- strcat (fname, ".h");
- }
-#else
- strcpy (fname, searchptr->fname);
- strcat (fname, fbeg);
-#endif /* VMS */
- f = open_include_file (fname, searchptr, importing, &inc);
- if (f != -1) {
- if (bypass_slot && searchptr != first_bracket_include) {
- /* This is the first time we found this include file,
- and we found it after first_bracket_include.
- Record its location so that we can bypass to here next time. */
- struct bypass_dir *p
- = (struct bypass_dir *) xmalloc (sizeof (struct bypass_dir));
- p->next = *bypass_slot;
- p->fname = fname + strlen (searchptr->fname);
- p->searchptr = searchptr;
- *bypass_slot = p;
- }
- break;
- }
-#ifdef VMS
- /* Our VMS hacks can produce invalid filespecs, so don't worry
- about errors other than EACCES. */
- if (errno == EACCES)
- break;
-#else
- if (errno != ENOENT && errno != ENOTDIR)
- break;
-#endif
- }
- }
-
-
- if (f < 0) {
-
- if (f == -2) {
- /* The file was already included. */
-
- /* If generating dependencies and -MG was specified, we assume missing
- files are leaf files, living in the same directory as the source file
- or other similar place; these missing files may be generated from
- other files and may not exist yet (eg: y.tab.h). */
- } else if (print_deps_missing_files
- && (system_include_depth != 0) < print_deps)
- {
- /* If it was requested as a system header file,
- then assume it belongs in the first place to look for such. */
- if (angle_brackets)
- {
- if (search_start) {
- char *p = (char *) alloca (strlen (search_start->fname)
- + strlen (fbeg) + 1);
- strcpy (p, search_start->fname);
- strcat (p, fbeg);
- deps_output (p, ' ');
- }
- }
- else
- {
- /* Otherwise, omit the directory, as if the file existed
- in the directory with the source. */
- deps_output (fbeg, ' ');
- }
- }
- /* If -M was specified, and this header file won't be added to the
- dependency list, then don't count this as an error, because we can
- still produce correct output. Otherwise, we can't produce correct
- output, because there may be dependencies we need inside the missing
- file, and we don't know what directory this missing file exists in. */
- else if (0 < print_deps && print_deps <= (system_include_depth != 0))
- warning ("No include path in which to find %s", fbeg);
- else if (f != -3)
- error_from_errno (fbeg);
- else
- error ("No include path in which to find %s", fbeg);
-
- } else {
-
- /* Actually process the file. */
-
- pcftry = (char *) alloca (strlen (fname) + 30);
- pcfbuf = 0;
- pcfnum = 0;
-
- if (!no_precomp)
- {
- do {
- sprintf (pcftry, "%s%d", fname, pcfnum++);
-
- pcf = open (pcftry, O_RDONLY, 0666);
- if (pcf != -1)
- {
- struct stat s;
-
- if (fstat (pcf, &s) != 0)
- pfatal_with_name (pcftry);
- if (! INO_T_EQ (inc->st.st_ino, s.st_ino)
- || inc->st.st_dev != s.st_dev)
- {
- pcfbuf = check_precompiled (pcf, &s, fname, &pcfbuflimit);
- /* Don't need it any more. */
- close (pcf);
- }
- else
- {
- /* Don't need it at all. */
- close (pcf);
- break;
- }
- }
- } while (pcf != -1 && !pcfbuf);
- }
-
- /* Actually process the file */
- if (pcfbuf) {
- pcfname = xstrdup (pcftry);
- pcfinclude ((U_CHAR *) pcfbuf, (U_CHAR *) fname, op);
- }
- else
- finclude (f, inc, op, is_system_include (fname), searchptr);
- }
-
- system_include_depth -= angle_brackets;
-
- return 0;
-}
-
-/* Return nonzero if the given FILENAME is an absolute pathname which
- designates a file within one of the known "system" include file
- directories. We assume here that if the given FILENAME looks like
- it is the name of a file which resides either directly in a "system"
- include file directory, or within any subdirectory thereof, then the
- given file must be a "system" include file. This function tells us
- if we should suppress pedantic errors/warnings for the given FILENAME.
-
- The value is 2 if the file is a C-language system header file
- for which C++ should (on most systems) assume `extern "C"'. */
-
-static int
-is_system_include (filename)
- register const char *filename;
-{
- struct file_name_list *searchptr;
-
- for (searchptr = first_system_include; searchptr;
- searchptr = searchptr->next)
- if (! strncmp (searchptr->fname, filename, strlen (searchptr->fname)))
- return searchptr->c_system_include_path + 1;
- return 0;
-}
-\f
-/* Yield the non-directory suffix of a file name. */
-
-static char *
-base_name (fname)
- const char *fname;
-{
- const char *s = fname;
- const char *p;
-#if defined (__MSDOS__) || defined (_WIN32)
- if (ISALPHA (s[0]) && s[1] == ':') s += 2;
-#endif
-#ifdef VMS
- if ((p = rindex (s, ':'))) s = p + 1; /* Skip device. */
- if ((p = rindex (s, ']'))) s = p + 1; /* Skip directory. */
- if ((p = rindex (s, '>'))) s = p + 1; /* Skip alternate (int'n'l) dir. */
- if (s != fname)
- return (char *) s;
-#endif
- if ((p = rindex (s, '/'))) s = p + 1;
-#ifdef DIR_SEPARATOR
- if ((p = rindex (s, DIR_SEPARATOR))) s = p + 1;
-#endif
- return (char *) s;
-}
-
-/* Yield nonzero if FILENAME is absolute (i.e. not relative). */
-
-static int
-absolute_filename (filename)
- const char *filename;
-{
-#if defined (__MSDOS__) \
- || (defined (_WIN32) && !defined (__CYGWIN__) && !defined (_UWIN))
- if (ISALPHA (filename[0]) && filename[1] == ':') filename += 2;
-#endif
-#if defined (__CYGWIN__)
- /* At present, any path that begins with a drive spec is absolute. */
- if (ISALPHA (filename[0]) && filename[1] == ':') return 1;
-#endif
-#ifdef VMS
- if (index (filename, ':') != 0) return 1;
-#endif
- if (filename[0] == '/') return 1;
-#ifdef DIR_SEPARATOR
- if (filename[0] == DIR_SEPARATOR) return 1;
-#endif
- return 0;
-}
-
-/* Returns whether or not a given character is a directory separator.
- Used by simplify_filename. */
-static inline int is_dir_separator PARAMS ((int));
-
-static inline
-int
-is_dir_separator(ch)
- char ch;
-{
- return (ch == DIR_SEPARATOR)
-#if defined (DIR_SEPARATOR_2)
- || (ch == DIR_SEPARATOR_2)
-#endif
- ;
-}
-
-/* Remove unnecessary characters from FILENAME in place,
- to avoid unnecessary filename aliasing.
- Return the length of the resulting string.
-
- Do only the simplifications allowed by Posix.
- It is OK to miss simplifications on non-Posix hosts,
- since this merely leads to suboptimal results. */
-
-static size_t
-simplify_filename (filename)
- char *filename;
-{
- register char *from = filename;
- register char *to = filename;
- char *to0;
-
- /* Remove redundant initial /s. */
- if (is_dir_separator (*from))
- {
- *to++ = DIR_SEPARATOR;
- if (is_dir_separator (*++from))
- {
- if (is_dir_separator (*++from))
- {
- /* 3 or more initial /s are equivalent to 1 /. */
- while (is_dir_separator (*++from))
- continue;
- }
- else
- {
- /* On some hosts // differs from /; Posix allows this. */
- *to++ = DIR_SEPARATOR;
- }
- }
- }
-
- to0 = to;
-
- for (;;)
- {
-#ifndef VMS
- if (from[0] == '.' && from[1] == '/')
- from += 2;
- else
-#endif
- {
- /* Copy this component and trailing DIR_SEPARATOR, if any. */
- while (!is_dir_separator (*to++ = *from++))
- {
- if (!to[-1])
- {
- /* Trim . component at end of nonempty name. */
- to -= filename <= to - 3 && to[-3] == DIR_SEPARATOR && to[-2] == '.';
-
- /* Trim unnecessary trailing /s. */
- while (to0 < --to && to[-1] == DIR_SEPARATOR)
- continue;
-
- *to = 0;
- return to - filename;
- }
- }
-#if defined(DIR_SEPARATOR_2)
- /* Simplify to one directory separator. */
- to[-1] = DIR_SEPARATOR;
-#endif
- }
-
- /* Skip /s after a /. */
- while (is_dir_separator (*from))
- from++;
- }
-}
-\f
-/* The file_name_map structure holds a mapping of file names for a
- particular directory. This mapping is read from the file named
- FILE_NAME_MAP_FILE in that directory. Such a file can be used to
- map filenames on a file system with severe filename restrictions,
- such as DOS. The format of the file name map file is just a series
- of lines with two tokens on each line. The first token is the name
- to map, and the second token is the actual name to use. */
-
-struct file_name_map
-{
- struct file_name_map *map_next;
- char *map_from;
- char *map_to;
-};
-
-#define FILE_NAME_MAP_FILE "header.gcc"
-
-/* Read a space delimited string of unlimited length from a stdio
- file. */
-
-static char *
-read_filename_string (ch, f)
- int ch;
- FILE *f;
-{
- char *alloc, *set;
- int len;
-
- len = 20;
- set = alloc = xmalloc (len + 1);
- if (! is_space[ch])
- {
- *set++ = ch;
- while ((ch = getc (f)) != EOF && ! is_space[ch])
- {
- if (set - alloc == len)
- {
- len *= 2;
- alloc = xrealloc (alloc, len + 1);
- set = alloc + len / 2;
- }
- *set++ = ch;
- }
- }
- *set = '\0';
- ungetc (ch, f);
- return alloc;
-}
-
-/* Read the file name map file for DIRNAME.
- If DIRNAME is empty, read the map file for the working directory;
- otherwise DIRNAME must end in '/'. */
-
-static struct file_name_map *
-read_name_map (dirname)
- const char *dirname;
-{
- /* This structure holds a linked list of file name maps, one per
- directory. */
- struct file_name_map_list
- {
- struct file_name_map_list *map_list_next;
- char *map_list_name;
- struct file_name_map *map_list_map;
- };
- static struct file_name_map_list *map_list;
- register struct file_name_map_list *map_list_ptr;
- char *name;
- FILE *f;
- size_t dirlen;
-
- for (map_list_ptr = map_list; map_list_ptr;
- map_list_ptr = map_list_ptr->map_list_next)
- if (! strcmp (map_list_ptr->map_list_name, dirname))
- return map_list_ptr->map_list_map;
-
- map_list_ptr = ((struct file_name_map_list *)
- xmalloc (sizeof (struct file_name_map_list)));
- map_list_ptr->map_list_name = xstrdup (dirname);
- map_list_ptr->map_list_map = NULL;
-
- dirlen = strlen (dirname);
- name = (char *) alloca (dirlen + strlen (FILE_NAME_MAP_FILE) + 1);
- strcpy (name, dirname);
- strcat (name, FILE_NAME_MAP_FILE);
- f = fopen (name, "r");
- if (!f)
- map_list_ptr->map_list_map = NULL;
- else
- {
- int ch;
-
- while ((ch = getc (f)) != EOF)
- {
- char *from, *to;
- struct file_name_map *ptr;
- size_t tolen;
-
- if (is_space[ch])
- continue;
- from = read_filename_string (ch, f);
- while ((ch = getc (f)) != EOF && is_hor_space[ch])
- ;
- to = read_filename_string (ch, f);
-
- simplify_filename (from);
- tolen = simplify_filename (to);
-
- ptr = ((struct file_name_map *)
- xmalloc (sizeof (struct file_name_map)));
- ptr->map_from = from;
-
- /* Make the real filename absolute. */
- if (absolute_filename (to))
- ptr->map_to = to;
- else
- {
- ptr->map_to = xmalloc (dirlen + tolen + 1);
- strcpy (ptr->map_to, dirname);
- strcat (ptr->map_to, to);
- free (to);
- }
-
- ptr->map_next = map_list_ptr->map_list_map;
- map_list_ptr->map_list_map = ptr;
-
- while ((ch = getc (f)) != '\n')
- if (ch == EOF)
- break;
- }
- fclose (f);
- }
-
- map_list_ptr->map_list_next = map_list;
- map_list = map_list_ptr;
-
- return map_list_ptr->map_list_map;
-}
-
-/* Try to open include file FILENAME. SEARCHPTR is the directory
- being tried from the include file search path.
- IMPORTING is "" if we are importing, null otherwise.
- Return -2 if found, either a matching name or a matching inode.
- Otherwise, open the file and return a file descriptor if successful
- or -1 if unsuccessful.
- Unless unsuccessful, put a descriptor of the included file into *PINC.
- This function maps filenames on file systems based on information read by
- read_name_map. */
-
-static int
-open_include_file (filename, searchptr, importing, pinc)
- char *filename;
- struct file_name_list *searchptr;
- const U_CHAR *importing;
- struct include_file **pinc;
-{
- char *fname = remap ? remap_include_file (filename, searchptr) : filename;
- int fd = -2;
-
- /* Look up FNAME in include_hashtab. */
- struct include_file **phead = &include_hashtab[hashf ((U_CHAR *) fname,
- strlen (fname),
- INCLUDE_HASHSIZE)];
- struct include_file *inc, *head = *phead;
- for (inc = head; inc; inc = inc->next)
- if (!strcmp (fname, inc->fname))
- break;
-
- if (!inc
- || ! inc->control_macro
- || (inc->control_macro[0] && ! lookup (inc->control_macro, -1, -1))) {
-
- fd = open (fname, O_RDONLY, 0);
-
- if (fd < 0)
- {
-#ifdef VMS
- /* if #include <dir/file> fails, try again with hacked spec. */
- if (!hack_vms_include_specification (fname, 0))
- return fd;
- fd = open (fname, O_RDONLY, 0);
- if (fd < 0)
-#endif
- return fd;
- }
-
- if (!inc) {
- /* FNAME was not in include_hashtab; insert a new entry. */
- inc = (struct include_file *) xmalloc (sizeof (struct include_file));
- inc->next = head;
- inc->fname = fname;
- inc->control_macro = 0;
- inc->deps_output = 0;
- if (fstat (fd, &inc->st) != 0)
- pfatal_with_name (fname);
- *phead = inc;
-
- /* Look for another file with the same inode and device. */
- if (lookup_ino_include (inc)
- && inc->control_macro
- && (!inc->control_macro[0] || lookup (inc->control_macro, -1, -1))) {
- close (fd);
- fd = -2;
- }
- }
-
- /* For -M, add this file to the dependencies. */
- if (! inc->deps_output && (system_include_depth != 0) < print_deps) {
- inc->deps_output = 1;
- deps_output (fname, ' ');
- }
-
- /* Handle -H option. */
- if (print_include_names)
- fprintf (stderr, "%*s%s\n", indepth, "", fname);
- }
-
- if (importing)
- inc->control_macro = importing;
-
- *pinc = inc;
- return fd;
-}
-
-/* Return the remapped name of the include file FILENAME.
- SEARCHPTR is the directory being tried from the include file path. */
-
-static char *
-remap_include_file (filename, searchptr)
- char *filename;
- struct file_name_list *searchptr;
-{
- register struct file_name_map *map;
- register const char *from;
-
- if (searchptr)
- {
- if (! searchptr->got_name_map)
- {
- searchptr->name_map = read_name_map (searchptr->fname);
- searchptr->got_name_map = 1;
- }
-
- /* Check the mapping for the directory we are using. */
- from = filename + strlen (searchptr->fname);
- for (map = searchptr->name_map; map; map = map->map_next)
- if (! strcmp (map->map_from, from))
- return map->map_to;
- }
-
- from = base_name (filename);
-
- if (from != filename || !searchptr)
- {
- /* Try to find a mapping file for the particular directory we are
- looking in. Thus #include <sys/types.h> will look up sys/types.h
- in /usr/include/header.gcc and look up types.h in
- /usr/include/sys/header.gcc. */
-
- char *dir = (char *) alloca (from - filename + 1);
- bcopy (filename, dir, from - filename);
- dir[from - filename] = '\0';
-
- for (map = read_name_map (dir); map; map = map->map_next)
- if (! strcmp (map->map_from, from))
- return map->map_to;
- }
-
- return filename;
-}
-
-/* Insert INC into the include file table, hashed by device and inode number.
- If a file with different name but same dev+ino was already in the table,
- return 1 and set INC's control macro to the already-known macro. */
-
-static int
-lookup_ino_include (inc)
- struct include_file *inc;
-{
- int hash = ((unsigned) (inc->st.st_dev + INO_T_HASH (inc->st.st_ino))
- % INCLUDE_HASHSIZE);
- struct include_file *i = include_ino_hashtab[hash];
- inc->next_ino = i;
- include_ino_hashtab[hash] = inc;
-
- for (; i; i = i->next_ino)
- if (INO_T_EQ (inc->st.st_ino, i->st.st_ino)
- && inc->st.st_dev == i->st.st_dev) {
- inc->control_macro = i->control_macro;
- return 1;
- }
-
- return 0;
-}
-\f
-/* Process file descriptor F, which corresponds to include file INC,
- with output to OP.
- SYSTEM_HEADER_P is 1 if this file resides in any one of the known
- "system" include directories (as decided by the `is_system_include'
- function above).
- DIRPTR is the link in the dir path through which this file was found,
- or 0 if the file name was absolute. */
-
-static void
-finclude (f, inc, op, system_header_p, dirptr)
- int f;
- struct include_file *inc;
- FILE_BUF *op;
- int system_header_p;
- struct file_name_list *dirptr;
-{
- char *fname = inc->fname;
- int i;
- FILE_BUF *fp; /* For input stack frame */
- int missing_newline = 0;
-
- CHECK_DEPTH (return;);
-
- fp = &instack[indepth + 1];
- bzero ((char *) fp, sizeof (FILE_BUF));
- fp->nominal_fname = fp->fname = fname;
- fp->nominal_fname_len = strlen (fname);
- fp->inc = inc;
- fp->length = 0;
- fp->lineno = 1;
- fp->if_stack = if_stack;
- fp->system_header_p = system_header_p;
- fp->dir = dirptr;
-
- if (S_ISREG (inc->st.st_mode)) {
- size_t s = (size_t) inc->st.st_size;
- if (s != inc->st.st_size || s + 2 < s)
- memory_full ();
- fp->buf = (U_CHAR *) xmalloc (s + 2);
- fp->bufp = fp->buf;
-
- /* Read the file contents, knowing that s is an upper bound
- on the number of bytes we can read. */
- fp->length = safe_read (f, (char *) fp->buf, s);
- if (fp->length < 0) goto nope;
- }
- else if (S_ISDIR (inc->st.st_mode)) {
- error ("directory `%s' specified in #include", fname);
- close (f);
- return;
- } else {
- /* Cannot count its file size before reading.
- First read the entire file into heap and
- copy them into buffer on stack. */
-
- int bsize = 2000;
- int st_size = 0;
-
- fp->buf = (U_CHAR *) xmalloc (bsize + 2);
-
- for (;;) {
- i = safe_read (f, (char *) fp->buf + st_size, bsize - st_size);
- if (i < 0)
- goto nope; /* error! */
- st_size += i;
- if (st_size != bsize)
- break; /* End of file */
- bsize *= 2;
- fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
- }
- fp->bufp = fp->buf;
- fp->length = st_size;
- }
-
- if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
- /* Backslash-newline at end is not good enough. */
- || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
- fp->buf[fp->length++] = '\n';
- missing_newline = 1;
- }
- fp->buf[fp->length] = '\0';
-
- /* Close descriptor now, so nesting does not use lots of descriptors. */
- close (f);
-
- /* Must do this before calling trigraph_pcp, so that the correct file name
- will be printed in warning messages. */
-
- indepth++;
- input_file_stack_tick++;
-
- if (!no_trigraphs)
- trigraph_pcp (fp);
-
- if (warn_white_space)
- check_white_space (fp);
-
- output_line_directive (fp, op, 0, enter_file);
- rescan (op, 0);
-
- if (missing_newline)
- fp->lineno--;
-
- if (pedantic && missing_newline)
- pedwarn ("file does not end in newline");
-
- indepth--;
- input_file_stack_tick++;
- output_line_directive (&instack[indepth], op, 0, leave_file);
- free (fp->buf);
- return;
-
- nope:
-
- perror_with_name (fname);
- close (f);
- free (fp->buf);
-}
-
-/* Record that inclusion of the include file INC
- should be controlled by the macro named MACRO_NAME.
- This means that trying to include the file again
- will do something if that macro is defined. */
-
-static void
-record_control_macro (inc, macro_name)
- struct include_file *inc;
- const U_CHAR *macro_name;
-{
- if (!inc->control_macro || inc->control_macro[0])
- inc->control_macro = macro_name;
-}
-\f
-/* Load the specified precompiled header into core, and verify its
- preconditions. PCF indicates the file descriptor to read, which must
- be a regular file. *ST is its file status.
- FNAME indicates the file name of the original header.
- *LIMIT will be set to an address one past the end of the file.
- If the preconditions of the file are not satisfied, the buffer is
- freed and we return 0. If the preconditions are satisfied, return
- the address of the buffer following the preconditions. The buffer, in
- this case, should never be freed because various pieces of it will
- be referred to until all precompiled strings are output at the end of
- the run. */
-
-static char *
-check_precompiled (pcf, st, fname, limit)
- int pcf;
- struct stat *st;
- const char *fname ATTRIBUTE_UNUSED;
- const char **limit;
-{
- int length = 0;
- char *buf;
- char *cp;
-
- if (pcp_outfile)
- return 0;
-
- if (S_ISREG (st->st_mode))
- {
- size_t s = (size_t) st->st_size;
- if (s != st->st_size || s + 2 < s)
- memory_full ();
- buf = xmalloc (s + 2);
- length = safe_read (pcf, buf, s);
- if (length < 0)
- goto nope;
- }
- else
- abort ();
-
- if (length > 0 && buf[length-1] != '\n')
- buf[length++] = '\n';
- buf[length] = '\0';
-
- *limit = buf + length;
-
- /* File is in core. Check the preconditions. */
- if (!check_preconditions (buf))
- goto nope;
- for (cp = buf; *cp; cp++)
- ;
-#ifdef DEBUG_PCP
- fprintf (stderr, "Using preinclude %s\n", fname);
-#endif
- return cp + 1;
-
- nope:
-#ifdef DEBUG_PCP
- fprintf (stderr, "Cannot use preinclude %s\n", fname);
-#endif
- free (buf);
- return 0;
-}
-
-/* PREC (null terminated) points to the preconditions of a
- precompiled header. These are a series of #define and #undef
- lines which must match the current contents of the hash
- table. */
-
-static int
-check_preconditions (prec)
- const char *prec;
-{
- MACRODEF mdef;
- const char *lineend;
-
- while (*prec) {
- lineend = index (prec, '\n');
-
- if (*prec++ != '#') {
- error ("Bad format encountered while reading precompiled file");
- return 0;
- }
- if (!strncmp (prec, "define", 6)) {
- HASHNODE *hp;
-
- prec += 6;
- mdef = create_definition ((const U_CHAR *) prec,
- (const U_CHAR *) lineend, NULL_PTR);
-
- if (mdef.defn == 0)
- abort ();
-
- if ((hp = lookup (mdef.symnam, mdef.symlen, -1)) == NULL
- || (hp->type != T_MACRO && hp->type != T_CONST)
- || (hp->type == T_MACRO
- && !compare_defs (mdef.defn, hp->value.defn)
- && (mdef.defn->length != 2
- || mdef.defn->expansion[0] != '\n'
- || mdef.defn->expansion[1] != ' ')))
- return 0;
- } else if (!strncmp (prec, "undef", 5)) {
- const char *name;
- int len;
-
- prec += 5;
- while (is_hor_space[(U_CHAR) *prec])
- prec++;
- name = prec;
- while (is_idchar[(U_CHAR) *prec])
- prec++;
- len = prec - name;
-
- if (lookup ((const U_CHAR *) name, len, -1))
- return 0;
- } else {
- error ("Bad format encountered while reading precompiled file");
- return 0;
- }
- prec = lineend + 1;
- }
- /* They all passed successfully */
- return 1;
-}
-
-/* Process the main body of a precompiled file. BUF points to the
- string section of the file, following the preconditions. LIMIT is one
- character past the end. NAME is the name of the file being read
- in. OP is the main output buffer. */
-
-static void
-pcfinclude (buf, name, op)
- U_CHAR *buf;
- const U_CHAR *name;
- FILE_BUF *op;
-{
- FILE_BUF tmpbuf;
- int nstrings;
- U_CHAR *cp = buf;
-
- /* First in the file comes 4 bytes indicating the number of strings, */
- /* in network byte order. (MSB first). */
- nstrings = *cp++;
- nstrings = (nstrings << 8) | *cp++;
- nstrings = (nstrings << 8) | *cp++;
- nstrings = (nstrings << 8) | *cp++;
-
- /* Looping over each string... */
- while (nstrings--) {
- U_CHAR *string_start;
- U_CHAR *endofthiskey;
- STRINGDEF *str;
- int nkeys;
-
- /* Each string starts with a STRINGDEF structure (str), followed */
- /* by the text of the string (string_start) */
-
- /* First skip to a longword boundary */
- /* ??? Why a 4-byte boundary? On all machines? */
- /* NOTE: This works correctly even if size_t
- is narrower than a pointer.
- Do not try risky measures here to get another type to use!
- Do not include stddef.h--it will fail! */
- if ((size_t) cp & 3)
- cp += 4 - ((size_t) cp & 3);
-
- /* Now get the string. */
- str = (STRINGDEF *) (PTR) cp;
- string_start = cp += sizeof (STRINGDEF);
-
- for (; *cp; cp++) /* skip the string */
- ;
-
- /* We need to macro expand the string here to ensure that the
- proper definition environment is in place. If it were only
- expanded when we find out it is needed, macros necessary for
- its proper expansion might have had their definitions changed. */
- tmpbuf = expand_to_temp_buffer (string_start, cp++, 0, 0);
- /* Lineno is already set in the precompiled file */
- str->contents = tmpbuf.buf;
- str->len = tmpbuf.bufp - tmpbuf.buf;
- str->writeflag = 0;
- str->filename = name;
- str->output_mark = outbuf.bufp - outbuf.buf;
-
- str->chain = 0;
- *stringlist_tailp = str;
- stringlist_tailp = &str->chain;
-
- /* Next comes a fourbyte number indicating the number of keys
- for this string. */
- nkeys = *cp++;
- nkeys = (nkeys << 8) | *cp++;
- nkeys = (nkeys << 8) | *cp++;
- nkeys = (nkeys << 8) | *cp++;
-
- /* If this number is -1, then the string is mandatory. */
- if (nkeys == -1)
- str->writeflag = 1;
- else
- /* Otherwise, for each key, */
- for (; nkeys--; free (tmpbuf.buf), cp = endofthiskey + 1) {
- KEYDEF *kp = (KEYDEF *) (PTR) cp;
- HASHNODE *hp;
- U_CHAR *bp;
-
- /* It starts with a KEYDEF structure */
- cp += sizeof (KEYDEF);
-
- /* Find the end of the key. At the end of this for loop we
- advance CP to the start of the next key using this variable. */
- endofthiskey = cp + strlen ((char *) cp);
- kp->str = str;
-
- /* Expand the key, and enter it into the hash table. */
- tmpbuf = expand_to_temp_buffer (cp, endofthiskey, 0, 0);
- bp = tmpbuf.buf;
-
- while (is_hor_space[*bp])
- bp++;
- if (!is_idstart[*bp] || bp == tmpbuf.bufp) {
- str->writeflag = 1;
- continue;
- }
-
- hp = lookup (bp, -1, -1);
- if (hp == NULL) {
- kp->chain = 0;
- install (bp, -1, T_PCSTRING, (char *) kp, -1);
- }
- else if (hp->type == T_PCSTRING) {
- kp->chain = hp->value.keydef;
- hp->value.keydef = kp;
- }
- else
- str->writeflag = 1;
- }
- }
- /* This output_line_directive serves to switch us back to the current
- input file in case some of these strings get output (which will
- result in line directives for the header file being output). */
- output_line_directive (&instack[indepth], op, 0, enter_file);
-}
-
-/* Called from rescan when it hits a key for strings. Mark them all
- used and clean up. */
-
-static void
-pcstring_used (hp)
- HASHNODE *hp;
-{
- KEYDEF *kp;
-
- for (kp = hp->value.keydef; kp; kp = kp->chain)
- kp->str->writeflag = 1;
- delete_macro (hp);
-}
-
-/* Write the output, interspersing precompiled strings in their
- appropriate places. */
-
-static void
-write_output ()
-{
- STRINGDEF *next_string;
- U_CHAR *cur_buf_loc;
- int line_directive_len = 80;
- char *line_directive = xmalloc (line_directive_len);
- int len;
-
- /* In each run through the loop, either cur_buf_loc ==
- next_string_loc, in which case we print a series of strings, or
- it is less than next_string_loc, in which case we write some of
- the buffer. */
- cur_buf_loc = outbuf.buf;
- next_string = stringlist;
-
- while (cur_buf_loc < outbuf.bufp || next_string) {
- if (next_string
- && cur_buf_loc - outbuf.buf == next_string->output_mark) {
- if (next_string->writeflag) {
- len = 4 * strlen ((const char *) next_string->filename) + 32;
- while (len > line_directive_len)
- line_directive = xrealloc (line_directive,
- line_directive_len *= 2);
- sprintf (line_directive, "\n# %d ", next_string->lineno);
- strcpy (quote_string (line_directive + strlen (line_directive),
- (const char *) next_string->filename,
- strlen ((const char *) next_string->filename)),
- "\n");
- safe_write (fileno (stdout), line_directive, strlen (line_directive));
- safe_write (fileno (stdout),
- (char *) next_string->contents, next_string->len);
- }
- next_string = next_string->chain;
- }
- else {
- len = (next_string
- ? (next_string->output_mark
- - (cur_buf_loc - outbuf.buf))
- : outbuf.bufp - cur_buf_loc);
-
- safe_write (fileno (stdout), (char *) cur_buf_loc, len);
- cur_buf_loc += len;
- }
- }
- free (line_directive);
-}
-
-/* Pass a directive through to the output file.
- BUF points to the contents of the directive, as a contiguous string.
- LIMIT points to the first character past the end of the directive.
- KEYWORD is the keyword-table entry for the directive. */
-
-static void
-pass_thru_directive (buf, limit, op, keyword)
- const U_CHAR *buf;
- const U_CHAR *limit;
- FILE_BUF *op;
- struct directive *keyword;
-{
- register int keyword_length = keyword->length;
-
- check_expand (op, 1 + keyword_length + (limit - buf));
- *op->bufp++ = '#';
- bcopy (keyword->name, (char *) op->bufp, keyword_length);
- op->bufp += keyword_length;
- if (limit != buf && buf[0] != ' ')
- *op->bufp++ = ' ';
- bcopy ((const PTR) buf, (PTR) op->bufp, limit - buf);
- op->bufp += (limit - buf);
-#if 0
- *op->bufp++ = '\n';
- /* Count the line we have just made in the output,
- to get in sync properly. */
- op->lineno++;
-#endif
-}
-\f
-/* The arglist structure is built by do_define to tell
- collect_definition where the argument names begin. That
- is, for a define like "#define f(x,y,z) foo+x-bar*y", the arglist
- would contain pointers to the strings x, y, and z.
- Collect_definition would then build a DEFINITION node,
- with reflist nodes pointing to the places x, y, and z had
- appeared. So the arglist is just convenience data passed
- between these two routines. It is not kept around after
- the current #define has been processed and entered into the
- hash table. */
-
-struct arglist {
- struct arglist *next;
- const U_CHAR *name;
- int length;
- int argno;
- char rest_args;
-};
-
-/* Create a DEFINITION node from a #define directive. Arguments are
- as for do_define. */
-
-static MACRODEF
-create_definition (buf, limit, op)
- const U_CHAR *buf, *limit;
- FILE_BUF *op;
-{
- const U_CHAR *bp; /* temp ptr into input buffer */
- const U_CHAR *symname; /* remember where symbol name starts */
- int sym_length; /* and how long it is */
- int line = instack[indepth].lineno;
- const char *file = instack[indepth].nominal_fname;
- size_t file_len = instack[indepth].nominal_fname_len;
- int rest_args = 0;
-
- DEFINITION *defn;
- int arglengths = 0; /* Accumulate lengths of arg names
- plus number of args. */
- MACRODEF mdef;
-
- bp = buf;
-
- while (is_hor_space[*bp])
- bp++;
-
- symname = bp; /* remember where it starts */
- sym_length = check_macro_name (bp, 0);
- bp += sym_length;
-
- /* Lossage will occur if identifiers or control keywords are broken
- across lines using backslash. This is not the right place to take
- care of that. */
-
- if (*bp == '(') {
- struct arglist *arg_ptrs = NULL;
- int argno = 0;
-
- bp++; /* skip '(' */
- SKIP_WHITE_SPACE (bp);
-
- /* Loop over macro argument names. */
- while (*bp != ')') {
- struct arglist *temp;
-
- temp = (struct arglist *) alloca (sizeof (struct arglist));
- temp->name = bp;
- temp->next = arg_ptrs;
- temp->argno = argno++;
- temp->rest_args = 0;
- arg_ptrs = temp;
-
- if (rest_args)
- pedwarn ("another parameter follows `%s'",
- rest_extension);
-
- if (!is_idstart[*bp])
- {
- if (c99 && limit - bp > (long) REST_EXTENSION_LENGTH
- && bcmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0)
- {
- /* This is the ISO C 99 way to write macros with variable
- number of arguments. */
- rest_args = 1;
- temp->rest_args = 1;
- }
- else
- pedwarn ("invalid character in macro parameter name");
- }
-
- /* Find the end of the arg name. */
- while (is_idchar[*bp]) {
- bp++;
- /* do we have a "special" rest-args extension here? */
- if (limit - bp > (long) REST_EXTENSION_LENGTH
- && bcmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0) {
- if (pedantic && !instack[indepth].system_header_p)
- pedwarn ("ANSI C does not allow macro with variable arguments");
- rest_args = 1;
- temp->rest_args = 1;
- break;
- }
- }
- if (bp == temp->name && rest_args == 1)
- {
- /* This is the ISO C 99 style. */
- temp->name = (U_CHAR *) va_args_name;
- temp->length = VA_ARGS_NAME_LENGTH;
- }
- else
- temp->length = bp - temp->name;
- if (rest_args == 1)
- bp += REST_EXTENSION_LENGTH;
- arglengths += temp->length + 2;
- SKIP_WHITE_SPACE (bp);
- if (temp->length == 0 || (*bp != ',' && *bp != ')')) {
- error ("badly punctuated parameter list in `#define'");
- goto nope;
- }
- if (*bp == ',') {
- bp++;
- SKIP_WHITE_SPACE (bp);
- /* A comma at this point can only be followed by an identifier. */
- if (!is_idstart[*bp]
- && !(c99 && limit - bp > (long) REST_EXTENSION_LENGTH
- && bcmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0)) {
- error ("badly punctuated parameter list in `#define'");
- goto nope;
- }
- }
- if (bp >= limit) {
- error ("unterminated parameter list in `#define'");
- goto nope;
- }
- {
- struct arglist *otemp;
-
- for (otemp = temp->next; otemp != NULL; otemp = otemp->next)
- if (temp->length == otemp->length
- && bcmp (temp->name, otemp->name, temp->length) == 0)
- {
- error ("duplicate argument name `%.*s' in `#define'",
- temp->length, temp->name);
- goto nope;
- }
- if (rest_args == 0 && temp->length == VA_ARGS_NAME_LENGTH
- && bcmp (temp->name, va_args_name, VA_ARGS_NAME_LENGTH) == 0)
- {
- error ("\
-reserved name `%s' used as argument name in `#define'", va_args_name);
- goto nope;
- }
- }
- }
-
- ++bp; /* skip paren */
- SKIP_WHITE_SPACE (bp);
- /* now everything from bp before limit is the definition. */
- defn = collect_expansion (bp, limit, argno, arg_ptrs);
- defn->rest_args = rest_args;
-
- /* Now set defn->args.argnames to the result of concatenating
- the argument names in reverse order
- with comma-space between them. */
- defn->args.argnames = (U_CHAR *) xmalloc (arglengths + 1);
- {
- struct arglist *temp;
- int i = 0;
- for (temp = arg_ptrs; temp; temp = temp->next) {
- bcopy (temp->name, &defn->args.argnames[i], temp->length);
- i += temp->length;
- if (temp->next != 0) {
- defn->args.argnames[i++] = ',';
- defn->args.argnames[i++] = ' ';
- }
- }
- defn->args.argnames[i] = 0;
- }
- } else {
- /* Simple expansion or empty definition. */
-
- if (bp < limit)
- {
- if (is_hor_space[*bp]) {
- bp++;
- SKIP_WHITE_SPACE (bp);
- } else if (sym_length) {
- switch (*bp) {
- case '!': case '"': case '#': case '%': case '&': case '\'':
- case ')': case '*': case '+': case ',': case '-': case '.':
- case '/': case ':': case ';': case '<': case '=': case '>':
- case '?': case '[': case '\\': case ']': case '^': case '{':
- case '|': case '}': case '~':
- warning ("missing white space after `#define %.*s'",
- sym_length, symname);
- break;
-
- default:
- pedwarn ("missing white space after `#define %.*s'",
- sym_length, symname);
- break;
- }
- }
- }
- /* Now everything from bp before limit is the definition. */
- defn = collect_expansion (bp, limit, -1, NULL_PTR);
- defn->args.argnames = (U_CHAR *) "";
- }
-
- defn->line = line;
- defn->file = file;
- defn->file_len = file_len;
-
- /* OP is null if this is a predefinition */
- defn->predefined = !op;
- mdef.defn = defn;
- mdef.symnam = symname;
- mdef.symlen = sym_length;
-
- return mdef;
-
- nope:
- mdef.defn = 0;
- return mdef;
-}
-
-/* Process a #define directive.
-BUF points to the contents of the #define directive, as a contiguous string.
-LIMIT points to the first character past the end of the definition.
-KEYWORD is the keyword-table entry for #define. */
-
-static int
-do_define (buf, limit, op, keyword)
- U_CHAR *buf, *limit;
- FILE_BUF *op;
- struct directive *keyword;
-{
- int hashcode;
- MACRODEF mdef;
- enum node_type newtype = keyword->type == T_DEFINE ? T_MACRO : T_POISON;
-
- /* If this is a precompiler run (with -pcp) pass thru #define directives. */
- if (pcp_outfile && op)
- pass_thru_directive (buf, limit, op, keyword);
-
- mdef = create_definition (buf, limit, op);
- if (mdef.defn == 0)
- goto nope;
-
- hashcode = hashf (mdef.symnam, mdef.symlen, HASHSIZE);
-
- {
- HASHNODE *hp;
- if ((hp = lookup (mdef.symnam, mdef.symlen, hashcode)) != NULL) {
- int ok = 0;
- /* Redefining a precompiled key is ok. */
- if (hp->type == T_PCSTRING)
- ok = 1;
- /* Redefining a poisoned identifier is even worse than `not ok'. */
- else if (hp->type == T_POISON)
- ok = -1;
- /* Poisoning anything else is not ok.
- The poison should always come first. */
- else if (newtype == T_POISON)
- ok = 0;
- /* Redefining a macro is ok if the definitions are the same. */
- else if (hp->type == T_MACRO)
- ok = ! compare_defs (mdef.defn, hp->value.defn);
- /* Redefining a constant is ok with -D. */
- else if (hp->type == T_CONST)
- ok = ! done_initializing;
-
- /* Print the warning or error if it's not ok. */
- if (ok <= 0)
- {
- /* If we are passing through #define and #undef directives, do
- that for this re-definition now. */
- if (debug_output && op)
- pass_thru_directive (buf, limit, op, keyword);
-
- if (hp->type == T_POISON)
- error ("redefining poisoned `%.*s'", mdef.symlen, mdef.symnam);
- else
- pedwarn ("`%.*s' redefined", mdef.symlen, mdef.symnam);
- if (hp->type == T_MACRO)
- pedwarn_with_file_and_line (hp->value.defn->file,
- hp->value.defn->file_len,
- hp->value.defn->line,
- "this is the location of the previous definition");
- }
- if (hp->type != T_POISON)
- {
- /* Replace the old definition. */
- hp->type = newtype;
- hp->value.defn = mdef.defn;
- }
- } else {
- /* If we are passing through #define and #undef directives, do
- that for this new definition now. */
- if (debug_output && op)
- pass_thru_directive (buf, limit, op, keyword);
- install (mdef.symnam, mdef.symlen, newtype,
- (char *) mdef.defn, hashcode);
- }
- }
-
- return 0;
-
-nope:
-
- return 1;
-}
-\f
-/* Check a purported macro name SYMNAME, and yield its length.
- ASSERTION is nonzero if this is really for an assertion name. */
-
-static int
-check_macro_name (symname, assertion)
- const U_CHAR *symname;
- int assertion;
-{
- const U_CHAR *p;
- int sym_length;
-
- for (p = symname; is_idchar[*p]; p++)
- ;
- sym_length = p - symname;
- if (sym_length == 0
- || (sym_length == 1 && *symname == 'L' && (*p == '\'' || *p == '"')))
- {
- if (assertion)
- error ("invalid assertion name");
- else
- error ("invalid macro name");
- }
- else if (!is_idstart[*symname]
- || (sym_length == 7 && ! bcmp (symname, "defined", 7)))
- {
- if (assertion)
- error ("invalid assertion name `%.*s'", sym_length, symname);
- else
- error ("invalid macro name `%.*s'", sym_length, symname);
- }
- return sym_length;
-}
-
-/* Return zero if two DEFINITIONs are isomorphic. */
-
-static int
-compare_defs (d1, d2)
- DEFINITION *d1, *d2;
-{
- register struct reflist *a1, *a2;
- register U_CHAR *p1 = d1->expansion;
- register U_CHAR *p2 = d2->expansion;
- int first = 1;
-
- if (d1->nargs != d2->nargs)
- return 1;
- if (pedantic
- && strcmp ((char *)d1->args.argnames, (char *)d2->args.argnames))
- return 1;
- for (a1 = d1->pattern, a2 = d2->pattern; a1 && a2;
- a1 = a1->next, a2 = a2->next) {
- if (!((a1->nchars == a2->nchars && ! bcmp (p1, p2, a1->nchars))
- || ! comp_def_part (first, p1, a1->nchars, p2, a2->nchars, 0))
- || a1->argno != a2->argno
- || a1->stringify != a2->stringify
- || a1->raw_before != a2->raw_before
- || a1->raw_after != a2->raw_after)
- return 1;
- first = 0;
- p1 += a1->nchars;
- p2 += a2->nchars;
- }
- if (a1 != a2)
- return 1;
- if (comp_def_part (first, p1, d1->length - (p1 - d1->expansion),
- p2, d2->length - (p2 - d2->expansion), 1))
- return 1;
- return 0;
-}
-
-/* Return 1 if two parts of two macro definitions are effectively different.
- One of the parts starts at BEG1 and has LEN1 chars;
- the other has LEN2 chars at BEG2.
- Any sequence of whitespace matches any other sequence of whitespace.
- FIRST means these parts are the first of a macro definition;
- so ignore leading whitespace entirely.
- LAST means these parts are the last of a macro definition;
- so ignore trailing whitespace entirely. */
-
-static int
-comp_def_part (first, beg1, len1, beg2, len2, last)
- int first;
- const U_CHAR *beg1, *beg2;
- int len1, len2;
- int last;
-{
- register const U_CHAR *end1 = beg1 + len1;
- register const U_CHAR *end2 = beg2 + len2;
- if (first) {
- while (beg1 != end1 && is_space[*beg1]) beg1++;
- while (beg2 != end2 && is_space[*beg2]) beg2++;
- }
- if (last) {
- while (beg1 != end1 && is_space[end1[-1]]) end1--;
- while (beg2 != end2 && is_space[end2[-1]]) end2--;
- }
- while (beg1 != end1 && beg2 != end2) {
- if (is_space[*beg1] && is_space[*beg2]) {
- while (beg1 != end1 && is_space[*beg1]) beg1++;
- while (beg2 != end2 && is_space[*beg2]) beg2++;
- } else if (*beg1 == *beg2) {
- beg1++; beg2++;
- } else break;
- }
- return (beg1 != end1) || (beg2 != end2);
-}
-\f
-/* Read a replacement list for a macro with parameters.
- Build the DEFINITION structure.
- Reads characters of text starting at BUF until END.
- ARGLIST specifies the formal parameters to look for
- in the text of the definition; NARGS is the number of args
- in that list, or -1 for a macro name that wants no argument list.
- MACRONAME is the macro name itself (so we can avoid recursive expansion)
- and NAMELEN is its length in characters.
-
-Note that comments, backslash-newlines, and leading white space
-have already been deleted from the argument. */
-
-/* If there is no trailing whitespace, a Newline Space is added at the end
- to prevent concatenation that would be contrary to the standard. */
-
-static DEFINITION *
-collect_expansion (buf, end, nargs, arglist)
- const U_CHAR *buf;
- const U_CHAR *end;
- int nargs;
- struct arglist *arglist;
-{
- DEFINITION *defn;
- register const U_CHAR *p;
- register const U_CHAR *limit;
- register U_CHAR *lastp, *exp_p;
- struct reflist *endpat = NULL;
- /* Pointer to first nonspace after last ## seen. */
- const U_CHAR *concat = 0;
- /* Pointer to first nonspace after last single-# seen. */
- const U_CHAR *stringify = 0;
- /* How those tokens were spelled. */
- enum sharp_token_type concat_sharp_token_type = NO_SHARP_TOKEN;
- enum sharp_token_type stringify_sharp_token_type = NO_SHARP_TOKEN;
- int maxsize;
- int expected_delimiter = '\0';
-
- /* Scan thru the replacement list, ignoring comments and quoted
- strings, picking up on the macro calls. It does a linear search
- thru the arg list on every potential symbol. Profiling might say
- that something smarter should happen. */
-
- if (end < buf)
- abort ();
-
- /* Find the beginning of the trailing whitespace. */
- limit = end;
- p = buf;
- while (p < limit && is_space[limit[-1]]) limit--;
-
- /* Allocate space for the text in the macro definition.
- Each input char may or may not need 1 byte,
- so this is an upper bound.
- The extra 3 are for invented trailing newline-marker and final null. */
- maxsize = (sizeof (DEFINITION)
- + (limit - p) + 3);
- defn = (DEFINITION *) xcalloc (1, maxsize);
-
- defn->nargs = nargs;
- exp_p = defn->expansion = (U_CHAR *) defn + sizeof (DEFINITION);
- lastp = exp_p;
-
- if (p[0] == '#'
- ? p[1] == '#'
- : p[0] == '%' && p[1] == ':' && p[2] == '%' && p[3] == ':') {
- error ("`##' at start of macro definition");
- p += p[0] == '#' ? 2 : 4;
- }
-
- /* Process the main body of the definition. */
- while (p < limit) {
- int skipped_arg = 0;
- register U_CHAR c = *p++;
-
- *exp_p++ = c;
-
- if (!traditional) {
- switch (c) {
- case '\'':
- case '\"':
- if (expected_delimiter != '\0') {
- if (c == expected_delimiter)
- expected_delimiter = '\0';
- } else
- expected_delimiter = c;
- break;
-
- case '\\':
- if (expected_delimiter) {
- /* In a string, backslash goes through
- and makes next char ordinary. */
- *exp_p++ = *p++;
- }
- break;
-
- case '%':
- if (!expected_delimiter && *p == ':') {
- /* %: is not a digraph if preceded by an odd number of '<'s. */
- const U_CHAR *p0 = p - 1;
- while (buf < p0 && p0[-1] == '<')
- p0--;
- if ((p - p0) & 1) {
- /* Treat %:%: as ## and %: as #. */
- if (p[1] == '%' && p[2] == ':') {
- p += 2;
- goto sharp_sharp_token;
- }
- if (nargs >= 0) {
- p++;
- goto sharp_token;
- }
- }
- }
- break;
-
- case '#':
- /* # is ordinary inside a string. */
- if (expected_delimiter)
- break;
- if (*p == '#') {
- sharp_sharp_token:
- /* ##: concatenate preceding and following tokens. */
- /* Take out the first #, discard preceding whitespace. */
- exp_p--;
- while (exp_p > lastp && is_hor_space[exp_p[-1]])
- --exp_p;
- /* Skip the second #. */
- p++;
- concat_sharp_token_type = c;
- if (is_hor_space[*p]) {
- concat_sharp_token_type = c + 1;
- p++;
- SKIP_WHITE_SPACE (p);
- }
- concat = p;
- if (p == limit)
- error ("`##' at end of macro definition");
- } else if (nargs >= 0) {
- /* Single #: stringify following argument ref.
- Don't leave the # in the expansion. */
- sharp_token:
- exp_p--;
- stringify_sharp_token_type = c;
- if (is_hor_space[*p]) {
- stringify_sharp_token_type = c + 1;
- p++;
- SKIP_WHITE_SPACE (p);
- }
- if (! is_idstart[*p] || nargs == 0
- || (*p == 'L' && (p[1] == '\'' || p[1] == '"')))
- error ("`#' operator is not followed by a macro argument name");
- else
- stringify = p;
- }
- break;
- }
- } else {
- /* In -traditional mode, recognize arguments inside strings and
- character constants, and ignore special properties of #.
- Arguments inside strings are considered "stringified", but no
- extra quote marks are supplied. */
- switch (c) {
- case '\'':
- case '\"':
- if (expected_delimiter != '\0') {
- if (c == expected_delimiter)
- expected_delimiter = '\0';
- } else
- expected_delimiter = c;
- break;
-
- case '\\':
- /* Backslash quotes delimiters and itself, but not macro args. */
- if (expected_delimiter != 0 && p < limit
- && (*p == expected_delimiter || *p == '\\')) {
- *exp_p++ = *p++;
- continue;
- }
- break;
-
- case '/':
- if (expected_delimiter != '\0') /* No comments inside strings. */
- break;
- if (*p == '*') {
- /* If we find a comment that wasn't removed by handle_directive,
- this must be -traditional. So replace the comment with
- nothing at all. */
- exp_p--;
- while (++p < limit) {
- if (p[0] == '*' && p[1] == '/') {
- p += 2;
- break;
- }
- }
-#if 0
- /* Mark this as a concatenation-point, as if it had been ##. */
- concat = p;
-#endif
- }
- break;
- }
- }
-
-#ifdef MULTIBYTE_CHARS
- /* Handle multibyte characters inside string and character literals. */
- if (expected_delimiter != '\0')
- {
- int length;
- --p;
- length = local_mblen (p, limit - p);
- if (length > 1)
- {
- --exp_p;
- bcopy (p, exp_p, length);
- p += length;
- exp_p += length;
- continue;
- }
- ++p;
- }
-#endif
-
- /* Handle the start of a symbol. */
- if (is_idchar[c] && nargs > 0) {
- const U_CHAR *id_beg = p - 1;
- int id_len;
-
- --exp_p;
- while (p != limit && is_idchar[*p]) p++;
- id_len = p - id_beg;
-
- if (is_idstart[c]
- && ! (id_len == 1 && c == 'L' && (*p == '\'' || *p == '"'))) {
- register struct arglist *arg;
-
- for (arg = arglist; arg != NULL; arg = arg->next) {
- struct reflist *tpat;
-
- if (arg->name[0] == c
- && arg->length == id_len
- && bcmp (arg->name, id_beg, id_len) == 0) {
- enum sharp_token_type tpat_stringify;
- if (expected_delimiter) {
- if (warn_stringify) {
- if (traditional) {
- warning ("macro argument `%.*s' is stringified.",
- id_len, arg->name);
- } else {
- warning ("macro arg `%.*s' would be stringified with -traditional.",
- id_len, arg->name);
- }
- }
- /* If ANSI, don't actually substitute inside a string. */
- if (!traditional)
- break;
- tpat_stringify = SHARP_TOKEN;
- } else {
- tpat_stringify
- = (stringify == id_beg
- ? stringify_sharp_token_type : NO_SHARP_TOKEN);
- }
- /* make a pat node for this arg and append it to the end of
- the pat list */
- tpat = (struct reflist *) xmalloc (sizeof (struct reflist));
- tpat->next = NULL;
- tpat->raw_before
- = concat == id_beg ? concat_sharp_token_type : NO_SHARP_TOKEN;
- tpat->raw_after = NO_SHARP_TOKEN;
- tpat->rest_args = arg->rest_args;
- tpat->stringify = tpat_stringify;
-
- if (endpat == NULL)
- defn->pattern = tpat;
- else
- endpat->next = tpat;
- endpat = tpat;
-
- tpat->argno = arg->argno;
- tpat->nchars = exp_p - lastp;
- {
- register const U_CHAR *p1 = p;
- SKIP_WHITE_SPACE (p1);
- if (p1[0]=='#'
- ? p1[1]=='#'
- : p1[0]=='%' && p1[1]==':' && p1[2]=='%' && p1[3]==':')
- tpat->raw_after = p1[0] + (p != p1);
- }
- lastp = exp_p; /* place to start copying from next time */
- skipped_arg = 1;
- break;
- }
- }
- }
-
- /* If this was not a macro arg, copy it into the expansion. */
- if (! skipped_arg) {
- register const U_CHAR *lim1 = p;
- p = id_beg;
- while (p != lim1)
- *exp_p++ = *p++;
- if (stringify == id_beg)
- error ("`#' operator should be followed by a macro argument name");
- }
- }
- }
-
- if (!traditional && expected_delimiter == 0) {
- /* If ANSI, put in a newline-space marker to prevent token pasting.
- But not if "inside a string" (which in ANSI mode happens only for
- -D option). */
- *exp_p++ = '\n';
- *exp_p++ = ' ';
- }
-
- *exp_p = '\0';
-
- defn->length = exp_p - defn->expansion;
-
- /* Crash now if we overrun the allocated size. */
- if (defn->length + 1 > maxsize)
- abort ();
-
-#if 0
-/* This isn't worth the time it takes. */
- /* give back excess storage */
- defn->expansion = (U_CHAR *) xrealloc (defn->expansion, defn->length + 1);
-#endif
-
- return defn;
-}
-\f
-static int
-do_assert (buf, limit, op, keyword)
- U_CHAR *buf, *limit;
- FILE_BUF *op ATTRIBUTE_UNUSED;
- struct directive *keyword ATTRIBUTE_UNUSED;
-{
- const U_CHAR *bp; /* temp ptr into input buffer */
- const U_CHAR *symname; /* remember where symbol name starts */
- int sym_length; /* and how long it is */
- struct arglist *tokens = NULL;
-
- if (pedantic && done_initializing && !instack[indepth].system_header_p)
- pedwarn ("ANSI C does not allow `#assert'");
-
- bp = buf;
-
- while (is_hor_space[*bp])
- bp++;
-
- symname = bp; /* remember where it starts */
- sym_length = check_macro_name (bp, 1);
- bp += sym_length;
- /* #define doesn't do this, but we should. */
- SKIP_WHITE_SPACE (bp);
-
- /* Lossage will occur if identifiers or control tokens are broken
- across lines using backslash. This is not the right place to take
- care of that. */
-
- if (*bp != '(') {
- error ("missing token-sequence in `#assert'");
- return 1;
- }
-
- {
- int error_flag = 0;
-
- bp++; /* skip '(' */
- SKIP_WHITE_SPACE (bp);
-
- tokens = read_token_list (&bp, limit, &error_flag);
- if (error_flag)
- return 1;
- if (tokens == 0) {
- error ("empty token-sequence in `#assert'");
- return 1;
- }
-
- ++bp; /* skip paren */
- SKIP_WHITE_SPACE (bp);
- }
-
- /* If this name isn't already an assertion name, make it one.
- Error if it was already in use in some other way. */
-
- {
- ASSERTION_HASHNODE *hp;
- int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
- struct tokenlist_list *value
- = (struct tokenlist_list *) xmalloc (sizeof (struct tokenlist_list));
-
- hp = assertion_lookup (symname, sym_length, hashcode);
- if (hp == NULL) {
- if (sym_length == 7 && ! bcmp (symname, "defined", 7))
- error ("`defined' redefined as assertion");
- hp = assertion_install (symname, sym_length, hashcode);
- }
-
- /* Add the spec'd token-sequence to the list of such. */
- value->tokens = tokens;
- value->next = hp->value;
- hp->value = value;
- }
-
- return 0;
-}
-\f
-static int
-do_unassert (buf, limit, op, keyword)
- U_CHAR *buf, *limit;
- FILE_BUF *op ATTRIBUTE_UNUSED;
- struct directive *keyword ATTRIBUTE_UNUSED;
-{
- const U_CHAR *bp; /* temp ptr into input buffer */
- const U_CHAR *symname; /* remember where symbol name starts */
- int sym_length; /* and how long it is */
-
- struct arglist *tokens = NULL;
- int tokens_specified = 0;
-
- if (pedantic && done_initializing && !instack[indepth].system_header_p)
- pedwarn ("ANSI C does not allow `#unassert'");
-
- bp = buf;
-
- while (is_hor_space[*bp])
- bp++;
-
- symname = bp; /* remember where it starts */
- sym_length = check_macro_name (bp, 1);
- bp += sym_length;
- /* #define doesn't do this, but we should. */
- SKIP_WHITE_SPACE (bp);
-
- /* Lossage will occur if identifiers or control tokens are broken
- across lines using backslash. This is not the right place to take
- care of that. */
-
- if (*bp == '(') {
- int error_flag = 0;
-
- bp++; /* skip '(' */
- SKIP_WHITE_SPACE (bp);
-
- tokens = read_token_list (&bp, limit, &error_flag);
- if (error_flag)
- return 1;
- if (tokens == 0) {
- error ("empty token list in `#unassert'");
- return 1;
- }
-
- tokens_specified = 1;
-
- ++bp; /* skip paren */
- SKIP_WHITE_SPACE (bp);
- }
-
- {
- ASSERTION_HASHNODE *hp;
- int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
- struct tokenlist_list *tail, *prev;
-
- hp = assertion_lookup (symname, sym_length, hashcode);
- if (hp == NULL)
- return 1;
-
- /* If no token list was specified, then eliminate this assertion
- entirely. */
- if (! tokens_specified) {
- struct tokenlist_list *next;
- for (tail = hp->value; tail; tail = next) {
- next = tail->next;
- free_token_list (tail->tokens);
- free (tail);
- }
- delete_assertion (hp);
- } else {
- /* If a list of tokens was given, then delete any matching list. */
-
- tail = hp->value;
- prev = 0;
- while (tail) {
- struct tokenlist_list *next = tail->next;
- if (compare_token_lists (tail->tokens, tokens)) {
- if (prev)
- prev->next = next;
- else
- hp->value = tail->next;
- free_token_list (tail->tokens);
- free (tail);
- } else {
- prev = tail;
- }
- tail = next;
- }
- }
- }
-
- return 0;
-}
-\f
-/* Test whether there is an assertion named NAME
- and optionally whether it has an asserted token list TOKENS.
- NAME is not null terminated; its length is SYM_LENGTH.
- If TOKENS_SPECIFIED is 0, then don't check for any token list. */
-
-int
-check_assertion (name, sym_length, tokens_specified, tokens)
- const U_CHAR *name;
- int sym_length;
- int tokens_specified;
- struct arglist *tokens;
-{
- ASSERTION_HASHNODE *hp;
- int hashcode = hashf (name, sym_length, ASSERTION_HASHSIZE);
-
- if (pedantic && !instack[indepth].system_header_p)
- pedwarn ("ANSI C does not allow testing assertions");
-
- hp = assertion_lookup (name, sym_length, hashcode);
- if (hp == NULL)
- /* It is not an assertion; just return false. */
- return 0;
-
- /* If no token list was specified, then value is 1. */
- if (! tokens_specified)
- return 1;
-
- {
- struct tokenlist_list *tail;
-
- tail = hp->value;
-
- /* If a list of tokens was given,
- then succeed if the assertion records a matching list. */
-
- while (tail) {
- if (compare_token_lists (tail->tokens, tokens))
- return 1;
- tail = tail->next;
- }
-
- /* Fail if the assertion has no matching list. */
- return 0;
- }
-}
-
-/* Compare two lists of tokens for equality including order of tokens. */
-
-static int
-compare_token_lists (l1, l2)
- struct arglist *l1, *l2;
-{
- while (l1 && l2) {
- if (l1->length != l2->length)
- return 0;
- if (bcmp (l1->name, l2->name, l1->length))
- return 0;
- l1 = l1->next;
- l2 = l2->next;
- }
-
- /* Succeed if both lists end at the same time. */
- return l1 == l2;
-}
-\f
-/* Read a space-separated list of tokens ending in a close parenthesis.
- Return a list of strings, in the order they were written.
- (In case of error, return 0 and store -1 in *ERROR_FLAG.)
- Parse the text starting at *BPP, and update *BPP.
- Don't parse beyond LIMIT. */
-
-static struct arglist *
-read_token_list (bpp, limit, error_flag)
- const U_CHAR **bpp;
- const U_CHAR *limit;
- int *error_flag;
-{
- struct arglist *token_ptrs = 0;
- const U_CHAR *bp = *bpp;
- int depth = 1;
-
- *error_flag = 0;
-
- /* Loop over the assertion value tokens. */
- while (depth > 0) {
- struct arglist *temp;
- U_CHAR *temp2;
- int eofp = 0;
- const U_CHAR *beg = bp;
-
- /* Find the end of the token. */
- if (*bp == '(') {
- bp++;
- depth++;
- } else if (*bp == ')') {
- depth--;
- if (depth == 0)
- break;
- bp++;
- } else if (*bp == '"' || *bp == '\'')
- bp = skip_quoted_string (bp, limit, 0, NULL_PTR, NULL_PTR, &eofp);
- else
- while (! is_hor_space[*bp] && *bp != '(' && *bp != ')'
- && *bp != '"' && *bp != '\'' && bp != limit)
- bp++;
-
- temp = (struct arglist *) xmalloc (sizeof (struct arglist));
- temp2 = (U_CHAR *) xmalloc (bp - beg + 1);
- bcopy ((const PTR) beg, (PTR) temp2, bp - beg);
- temp2[bp - beg] = 0;
- temp->name = temp2;
- temp->next = token_ptrs;
- token_ptrs = temp;
- temp->length = bp - beg;
-
- SKIP_WHITE_SPACE (bp);
-
- if (bp >= limit) {
- error ("unterminated token sequence in `#assert' or `#unassert'");
- *error_flag = -1;
- return 0;
- }
- }
- *bpp = bp;
-
- /* We accumulated the names in reverse order.
- Now reverse them to get the proper order. */
- {
- register struct arglist *prev = 0, *this, *next;
- for (this = token_ptrs; this; this = next) {
- next = this->next;
- this->next = prev;
- prev = this;
- }
- return prev;
- }
-}
-
-static void
-free_token_list (tokens)
- struct arglist *tokens;
-{
- while (tokens) {
- struct arglist *next = tokens->next;
- free ((PTR) tokens->name);
- free (tokens);
- tokens = next;
- }
-}
-\f
-/* Install a name in the assertion hash table.
-
- If LEN is >= 0, it is the length of the name.
- Otherwise, compute the length by scanning the entire name.
-
- If HASH is >= 0, it is the precomputed hash code.
- Otherwise, compute the hash code. */
-
-static ASSERTION_HASHNODE *
-assertion_install (name, len, hash)
- const U_CHAR *name;
- int len;
- int hash;
-{
- register ASSERTION_HASHNODE *hp;
- register int i, bucket;
- register U_CHAR *p;
- register const U_CHAR *q;
-
- i = sizeof (ASSERTION_HASHNODE) + len + 1;
- hp = (ASSERTION_HASHNODE *) xmalloc (i);
- bucket = hash;
- hp->bucket_hdr = &assertion_hashtab[bucket];
- hp->next = assertion_hashtab[bucket];
- assertion_hashtab[bucket] = hp;
- hp->prev = NULL;
- if (hp->next != NULL)
- hp->next->prev = hp;
- hp->length = len;
- hp->value = 0;
- hp->name = ((U_CHAR *) hp) + sizeof (ASSERTION_HASHNODE);
- p = hp->name;
- q = name;
- for (i = 0; i < len; i++)
- *p++ = *q++;
- hp->name[len] = 0;
- return hp;
-}
-
-/* Find the most recent hash node for name "name" (ending with first
- non-identifier char) installed by install
-
- If LEN is >= 0, it is the length of the name.
- Otherwise, compute the length by scanning the entire name.
-
- If HASH is >= 0, it is the precomputed hash code.
- Otherwise, compute the hash code. */
-
-static ASSERTION_HASHNODE *
-assertion_lookup (name, len, hash)
- const U_CHAR *name;
- int len;
- int hash;
-{
- register ASSERTION_HASHNODE *bucket;
-
- bucket = assertion_hashtab[hash];
- while (bucket) {
- if (bucket->length == len && bcmp (bucket->name, name, len) == 0)
- return bucket;
- bucket = bucket->next;
- }
- return NULL;
-}
-
-static void
-delete_assertion (hp)
- ASSERTION_HASHNODE *hp;
-{
-
- if (hp->prev != NULL)
- hp->prev->next = hp->next;
- if (hp->next != NULL)
- hp->next->prev = hp->prev;
-
- /* Make sure that the bucket chain header that the deleted guy was
- on points to the right thing afterwards. */
- if (hp == *hp->bucket_hdr)
- *hp->bucket_hdr = hp->next;
-
- free (hp);
-}
-\f
-/*
- * interpret #line directive. Remembers previously seen fnames
- * in its very own hash table.
- */
-#define FNAME_HASHSIZE 37
-
-static int
-do_line (buf, limit, op, keyword)
- U_CHAR *buf, *limit;
- FILE_BUF *op;
- struct directive *keyword ATTRIBUTE_UNUSED;
-{
- register U_CHAR *bp;
- FILE_BUF *ip = &instack[indepth];
- FILE_BUF tem;
- int new_lineno;
- enum file_change_code file_change = same_file;
-
- /* Expand any macros. */
- tem = expand_to_temp_buffer (buf, limit, 0, 0);
-
- /* Point to macroexpanded line, which is null-terminated now. */
- bp = tem.buf;
- limit = tem.bufp;
- SKIP_WHITE_SPACE (bp);
-
- if (!ISDIGIT (*bp)) {
- error ("invalid format `#line' directive");
- return 0;
- }
-
- /* The Newline at the end of this line remains to be processed.
- To put the next line at the specified line number,
- we must store a line number now that is one less. */
- new_lineno = atoi ((char *) bp) - 1;
-
- /* NEW_LINENO is one less than the actual line number here. */
- if (pedantic && new_lineno < 0)
- pedwarn ("line number out of range in `#line' directive");
-
- /* skip over the line number. */
- while (ISDIGIT (*bp))
- bp++;
-
-#if 0 /* #line 10"foo.c" is supposed to be allowed. */
- if (*bp && !is_space[*bp]) {
- error ("invalid format `#line' directive");
- return;
- }
-#endif
-
- SKIP_WHITE_SPACE (bp);
-
- if (*bp == '\"') {
- static HASHNODE *fname_table[FNAME_HASHSIZE];
- HASHNODE *hp, **hash_bucket;
- U_CHAR *fname, *p;
- int fname_length;
-
- fname = ++bp;
-
- /* Turn the file name, which is a character string literal,
- into a null-terminated string. Do this in place. */
- p = bp;
- for (;;)
- switch ((*p++ = *bp++)) {
- case '\\':
- if (! ignore_escape_flag)
- {
- char *bpc = (char *) bp;
- HOST_WIDEST_INT c = parse_escape (&bpc, (HOST_WIDEST_INT) (U_CHAR) (-1));
- bp = (U_CHAR *) bpc;
- if (c < 0)
- p--;
- else
- p[-1] = c;
- }
- break;
-
- case '\"':
- *--p = 0;
- goto fname_done;
- }
- fname_done:
- fname_length = p - fname;
-
- SKIP_WHITE_SPACE (bp);
- if (*bp) {
- if (pedantic)
- pedwarn ("garbage at end of `#line' directive");
- if (*bp == '1')
- file_change = enter_file;
- else if (*bp == '2')
- file_change = leave_file;
- else if (*bp == '3')
- ip->system_header_p = 1;
- else if (*bp == '4')
- ip->system_header_p = 2;
- else {
- error ("invalid format `#line' directive");
- return 0;
- }
-
- bp++;
- SKIP_WHITE_SPACE (bp);
- if (*bp == '3') {
- ip->system_header_p = 1;
- bp++;
- SKIP_WHITE_SPACE (bp);
- }
- if (*bp == '4') {
- ip->system_header_p = 2;
- bp++;
- SKIP_WHITE_SPACE (bp);
- }
- if (*bp) {
- error ("invalid format `#line' directive");
- return 0;
- }
- }
-
- hash_bucket = &fname_table[hashf (fname, fname_length, FNAME_HASHSIZE)];
- for (hp = *hash_bucket; hp != NULL; hp = hp->next)
- if (hp->length == fname_length &&
- bcmp (hp->value.cpval, fname, fname_length) == 0) {
- ip->nominal_fname = hp->value.cpval;
- ip->nominal_fname_len = fname_length;
- break;
- }
- if (hp == 0) {
- /* Didn't find it; cons up a new one. */
- hp = (HASHNODE *) xcalloc (1, sizeof (HASHNODE) + fname_length + 1);
- hp->next = *hash_bucket;
- *hash_bucket = hp;
-
- ip->nominal_fname = hp->value.cpval = ((char *) hp) + sizeof (HASHNODE);
- ip->nominal_fname_len = hp->length = fname_length;
- bcopy (fname, ((char *) hp) + sizeof (HASHNODE), fname_length + 1);
- }
- } else if (*bp) {
- error ("invalid format `#line' directive");
- return 0;
- }
-
- ip->lineno = new_lineno;
- output_line_directive (ip, op, 0, file_change);
- check_expand (op, ip->length - (ip->bufp - ip->buf));
- return 0;
-}
-
-/* Remove the definition of a symbol from the symbol table.
- according to un*x /lib/cpp, it is not an error to undef
- something that has no definitions, so it isn't one here either. */
-
-static int
-do_undef (buf, limit, op, keyword)
- U_CHAR *buf, *limit;
- FILE_BUF *op;
- struct directive *keyword;
-{
- int sym_length;
- HASHNODE *hp;
- U_CHAR *orig_buf = buf;
-
- /* If this is a precompiler run (with -pcp) pass thru #undef directives. */
- if (pcp_outfile && op)
- pass_thru_directive (buf, limit, op, keyword);
-
- SKIP_WHITE_SPACE (buf);
- sym_length = check_macro_name (buf, 0);
-
- while ((hp = lookup (buf, sym_length, -1)) != NULL) {
- /* If we are generating additional info for debugging (with -g) we
- need to pass through all effective #undef directives. */
- if (debug_output && op)
- pass_thru_directive (orig_buf, limit, op, keyword);
- if (hp->type == T_POISON)
- error ("cannot undefine poisoned `%s'", hp->name);
- else {
- if (hp->type != T_MACRO)
- warning ("undefining `%s'", hp->name);
- delete_macro (hp);
- }
- }
-
- if (pedantic) {
- buf += sym_length;
- SKIP_WHITE_SPACE (buf);
- if (buf != limit)
- pedwarn ("garbage after `#undef' directive");
- }
- return 0;
-}
-\f
-
-/* Report an error detected by the program we are processing.
- Use the text of the line in the error message. */
-
-static int
-do_error (buf, limit, op, keyword)
- U_CHAR *buf, *limit;
- FILE_BUF *op ATTRIBUTE_UNUSED;
- struct directive *keyword;
-{
- int length = limit - buf;
- U_CHAR *copy = (U_CHAR *) alloca (length + 1);
- bcopy ((const PTR) buf, (PTR) copy, length);
- copy[length] = 0;
- SKIP_WHITE_SPACE (copy);
-
- switch (keyword->type) {
- case T_ERROR:
- error ("#error %s", copy);
- break;
-
- case T_WARNING:
- if (pedantic && !instack[indepth].system_header_p)
- pedwarn ("ANSI C does not allow `#warning'");
- warning ("#warning %s", copy);
- break;
-
- default:
- abort ();
- }
-
- return 0;
-}
-/* Remember the name of the current file being read from so that we can
- avoid ever including it again. */
-
-static void
-do_once ()
-{
- int i;
-
- for (i = indepth; i >= 0; i--)
- if (instack[i].inc) {
- record_control_macro (instack[i].inc, (const U_CHAR *) "");
- break;
- }
-}
-
-/* Report program identification. */
-
-static int
-do_ident (buf, limit, op, keyword)
- U_CHAR *buf, *limit;
- FILE_BUF *op;
- struct directive *keyword ATTRIBUTE_UNUSED;
-{
- FILE_BUF trybuf;
- int len;
-
- /* Allow #ident in system headers, since that's not user's fault. */
- if (pedantic && !instack[indepth].system_header_p)
- pedwarn ("ANSI C does not allow `#ident'");
-
- trybuf = expand_to_temp_buffer (buf, limit, 0, 0);
- buf = trybuf.buf;
- len = trybuf.bufp - buf;
-
- /* Output expanded directive. */
- check_expand (op, 7 + len);
- bcopy ("#ident ", (char *) op->bufp, 7);
- op->bufp += 7;
- bcopy ((const PTR) buf, (PTR) op->bufp, len);
- op->bufp += len;
-
- free (buf);
- return 0;
-}
-
-/* #pragma and its argument line have already been copied to the output file.
- Just check for some recognized pragmas that need validation here. */
-
-static int
-do_pragma (buf, limit, op, keyword)
- U_CHAR *buf, *limit;
- FILE_BUF *op;
- struct directive *keyword;
-{
- SKIP_WHITE_SPACE (buf);
- if (!strncmp ((char *) buf, "once", 4)) {
- /* Allow #pragma once in system headers, since that's not the user's
- fault. */
- if (!instack[indepth].system_header_p)
- warning ("`#pragma once' is obsolete");
- do_once ();
- }
-
- if (!strncmp ((char *) buf, "poison", 6)) {
- /* Poison these symbols so that all subsequent usage produces an
- error message. */
- U_CHAR *p = buf + 6;
-
- SKIP_WHITE_SPACE (p);
- while (p < limit)
- {
- U_CHAR *end = p;
-
- while (end < limit && is_idchar[*end])
- end++;
- if (end < limit && !is_space[*end])
- {
- error ("invalid #pragma poison");
- return 0;
- }
- do_define(p, end, op, keyword);
- p = end;
- SKIP_WHITE_SPACE (p);
- }
- }
-
- if (!strncmp ((char *) buf, "implementation", 14)) {
- /* Be quiet about `#pragma implementation' for a file only if it hasn't
- been included yet. */
-
- int h;
- U_CHAR *p = buf + 14, *fname;
- SKIP_WHITE_SPACE (p);
- if (*p != '\"')
- return 0;
-
- fname = p + 1;
- p = skip_quoted_string (p, limit, 0, NULL_PTR, NULL_PTR, NULL_PTR);
- if (p[-1] == '"')
- *--p = '\0';
-
- for (h = 0; h < INCLUDE_HASHSIZE; h++) {
- struct include_file *inc;
- for (inc = include_hashtab[h]; inc; inc = inc->next) {
- if (!strcmp (base_name (inc->fname), (char *) fname)) {
- warning ("`#pragma implementation' for \"%s\" appears after its #include",fname);
- return 0;
- }
- }
- }
- }
- return 0;
-}
-
-#if 0
-/* This was a fun hack, but #pragma seems to start to be useful.
- By failing to recognize it, we pass it through unchanged to cc1. */
-
-/* The behavior of the #pragma directive is implementation defined.
- this implementation defines it as follows. */
-
-static int
-do_pragma ()
-{
- close (0);
- if (open ("/dev/tty", O_RDONLY, 0666) != 0)
- goto nope;
- close (1);
- if (open ("/dev/tty", O_WRONLY, 0666) != 1)
- goto nope;
- execl ("/usr/games/hack", "#pragma", 0);
- execl ("/usr/games/rogue", "#pragma", 0);
- execl ("/usr/new/emacs", "-f", "hanoi", "9", "-kill", 0);
- execl ("/usr/local/emacs", "-f", "hanoi", "9", "-kill", 0);
-nope:
- fatal ("You are in a maze of twisty compiler features, all different");
-}
-#endif
-
-#ifdef SCCS_DIRECTIVE
-
-/* Just ignore #sccs, on systems where we define it at all. */
-
-static int
-do_sccs (buf, limit, op, keyword)
- U_CHAR *buf ATTRIBUTE_UNUSED;
- U_CHAR *limit ATTRIBUTE_UNUSED;
- FILE_BUF *op ATTRIBUTE_UNUSED;
- struct directive *keyword ATTRIBUTE_UNUSED;
-{
- if (pedantic)
- pedwarn ("ANSI C does not allow `#sccs'");
- return 0;
-}
-
-#endif /* defined (SCCS_DIRECTIVE) */
-\f
-/* Handle #if directive by
- 1) inserting special `defined' keyword into the hash table
- that gets turned into 0 or 1 by special_symbol (thus,
- if the luser has a symbol called `defined' already, it won't
- work inside the #if directive)
- 2) rescan the input into a temporary output buffer
- 3) pass the output buffer to the yacc parser and collect a value
- 4) clean up the mess left from steps 1 and 2.
- 5) call conditional_skip to skip til the next #endif (etc.),
- or not, depending on the value from step 3. */
-
-static int
-do_if (buf, limit, op, keyword)
- U_CHAR *buf, *limit;
- FILE_BUF *op;
- struct directive *keyword ATTRIBUTE_UNUSED;
-{
- HOST_WIDEST_INT value;
- FILE_BUF *ip = &instack[indepth];
-
- value = eval_if_expression (buf, limit - buf);
- conditional_skip (ip, value == 0, T_IF, NULL_PTR, op);
- return 0;
-}
-
-/* Handle a #elif directive by not changing if_stack either.
- see the comment above do_else. */
-
-static int
-do_elif (buf, limit, op, keyword)
- U_CHAR *buf, *limit;
- FILE_BUF *op;
- struct directive *keyword ATTRIBUTE_UNUSED;
-{
- HOST_WIDEST_INT value;
- FILE_BUF *ip = &instack[indepth];
-
- if (if_stack == instack[indepth].if_stack) {
- error ("`#elif' not within a conditional");
- return 0;
- } else {
- if (if_stack->type != T_IF && if_stack->type != T_ELIF) {
- error ("`#elif' after `#else'");
- fprintf (stderr, " (matches line %d", if_stack->lineno);
- if (! (if_stack->fname_len == ip->nominal_fname_len
- && !bcmp (if_stack->fname, ip->nominal_fname,
- if_stack->fname_len))) {
- fprintf (stderr, ", file ");
- fwrite (if_stack->fname, sizeof if_stack->fname[0],
- if_stack->fname_len, stderr);
- }
- fprintf (stderr, ")\n");
- }
- if_stack->type = T_ELIF;
- }
-
- if (if_stack->if_succeeded)
- skip_if_group (ip, 0, op);
- else {
- value = eval_if_expression (buf, limit - buf);
- if (value == 0)
- skip_if_group (ip, 0, op);
- else {
- ++if_stack->if_succeeded; /* continue processing input */
- output_line_directive (ip, op, 1, same_file);
- }
- }
- return 0;
-}
-
-/* Evaluate a #if expression in BUF, of length LENGTH, then parse the
- result as a C expression and return the value as an int. */
-
-static HOST_WIDEST_INT
-eval_if_expression (buf, length)
- const U_CHAR *buf;
- int length;
-{
- FILE_BUF temp_obuf;
- HASHNODE *save_defined;
- HOST_WIDEST_INT value;
-
- save_defined = install ((const U_CHAR *) "defined", -1, T_SPEC_DEFINED,
- NULL_PTR, -1);
- pcp_inside_if = 1;
- temp_obuf = expand_to_temp_buffer (buf, buf + length, 0, 1);
- pcp_inside_if = 0;
- delete_macro (save_defined); /* clean up special symbol */
-
- *temp_obuf.bufp = '\n';
- value = parse_c_expression ((char *) temp_obuf.buf,
- warn_undef && !instack[indepth].system_header_p);
-
- free (temp_obuf.buf);
-
- return value;
-}
-
-/* routine to handle ifdef/ifndef. Try to look up the symbol, then do
- or don't skip to the #endif/#else/#elif depending on what directive
- is actually being processed. */
-
-static int
-do_xifdef (buf, limit, op, keyword)
- U_CHAR *buf, *limit;
- FILE_BUF *op;
- struct directive *keyword;
-{
- int skip;
- FILE_BUF *ip = &instack[indepth];
- U_CHAR *end;
- int start_of_file = 0;
- U_CHAR *control_macro = 0;
-
- /* Detect a #ifndef at start of file (not counting comments). */
- if (ip->fname != 0 && keyword->type == T_IFNDEF) {
- U_CHAR *p = ip->buf;
- while (p != directive_start) {
- U_CHAR c = *p++;
- if (is_space[c])
- ;
- /* Make no special provision for backslash-newline here; this is
- slower if backslash-newlines are present, but it's correct,
- and it's not worth it to tune for the rare backslash-newline. */
- else if (c == '/'
- && (*p == '*' || (cplusplus_comments && *p == '/'))) {
- /* Skip this comment. */
- int junk = 0;
- U_CHAR *save_bufp = ip->bufp;
- ip->bufp = p + 1;
- p = skip_to_end_of_comment (ip, &junk, 1);
- ip->bufp = save_bufp;
- } else {
- goto fail;
- }
- }
- /* If we get here, this conditional is the beginning of the file. */
- start_of_file = 1;
- fail: ;
- }
-
- /* Discard leading and trailing whitespace. */
- SKIP_WHITE_SPACE (buf);
- while (limit != buf && is_hor_space[limit[-1]]) limit--;
-
- /* Find the end of the identifier at the beginning. */
- for (end = buf; is_idchar[*end]; end++);
-
- if (end == buf) {
- skip = (keyword->type == T_IFDEF);
- if (! traditional)
- {
- if (end == limit)
- pedwarn ("`#%s' with no argument", keyword->name);
- else
- pedwarn ("`#%s' argument starts with punctuation", keyword->name);
- }
- } else {
- HASHNODE *hp;
-
- if (! traditional) {
- if (ISDIGIT (buf[0]))
- pedwarn ("`#%s' argument starts with a digit", keyword->name);
- else if (end != limit)
- pedwarn ("garbage at end of `#%s' argument", keyword->name);
- }
-
- hp = lookup (buf, end-buf, -1);
-
- if (pcp_outfile) {
- /* Output a precondition for this macro. */
- if (hp
- && (hp->type == T_CONST
- || (hp->type == T_MACRO && hp->value.defn->predefined)))
- fprintf (pcp_outfile, "#define %s\n", hp->name);
- else {
- U_CHAR *cp = buf;
- fprintf (pcp_outfile, "#undef ");
- while (is_idchar[*cp]) /* Ick! */
- fputc (*cp++, pcp_outfile);
- putc ('\n', pcp_outfile);
- }
- }
-
- if ((hp != NULL) && (hp->type == T_POISON)) {
- error("attempt to use poisoned `%s'.", hp->name);
- hp = NULL;
- }
- skip = (hp == NULL) ^ (keyword->type == T_IFNDEF);
- if (start_of_file && !skip) {
- control_macro = (U_CHAR *) xmalloc (end - buf + 1);
- bcopy ((const PTR) buf, (PTR) control_macro, end - buf);
- control_macro[end - buf] = 0;
- }
- }
-
- conditional_skip (ip, skip, T_IF, control_macro, op);
- return 0;
-}
-
-/* Push TYPE on stack; then, if SKIP is nonzero, skip ahead.
- If this is a #ifndef starting at the beginning of a file,
- CONTROL_MACRO is the macro name tested by the #ifndef.
- Otherwise, CONTROL_MACRO is 0. */
-
-static void
-conditional_skip (ip, skip, type, control_macro, op)
- FILE_BUF *ip;
- int skip;
- enum node_type type;
- const U_CHAR *control_macro;
- FILE_BUF *op;
-{
- IF_STACK_FRAME *temp;
-
- temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
- temp->fname = ip->nominal_fname;
- temp->fname_len = ip->nominal_fname_len;
- temp->lineno = ip->lineno;
- temp->next = if_stack;
- temp->control_macro = control_macro;
- if_stack = temp;
-
- if_stack->type = type;
-
- if (skip != 0) {
- skip_if_group (ip, 0, op);
- return;
- } else {
- ++if_stack->if_succeeded;
- output_line_directive (ip, &outbuf, 1, same_file);
- }
-}
-
-/* Skip to #endif, #else, or #elif. adjust line numbers, etc.
- Leaves input ptr at the sharp sign found.
- If ANY is nonzero, return at next directive of any sort. */
-
-static void
-skip_if_group (ip, any, op)
- FILE_BUF *ip;
- int any;
- FILE_BUF *op;
-{
- register U_CHAR *bp = ip->bufp, *cp;
- register U_CHAR *endb = ip->buf + ip->length;
- struct directive *kt;
- IF_STACK_FRAME *save_if_stack = if_stack; /* don't pop past here */
- U_CHAR *beg_of_line = bp;
- register int ident_length;
- U_CHAR *ident, *after_ident;
- /* Save info about where the group starts. */
- U_CHAR *beg_of_group = bp;
- int beg_lineno = ip->lineno;
- int skipping_include_directive = 0;
-
- if (output_conditionals && op != 0) {
- static const char * const ptr = "#failed\n";
- int len = strlen (ptr);
-
- if (op->bufp > op->buf && op->bufp[-1] != '\n')
- {
- *op->bufp++ = '\n';
- op->lineno++;
- }
- check_expand (op, len);
- bcopy (ptr, (char *) op->bufp, len);
- op->bufp += len;
- op->lineno++;
- output_line_directive (ip, op, 1, 0);
- }
-
- while (bp < endb) {
- switch (*bp++) {
- case '/': /* possible comment */
- if (*bp == '\\')
- newline_fix (bp);
- if (*bp == '*'
- || (cplusplus_comments && *bp == '/')) {
- ip->bufp = ++bp;
- bp = skip_to_end_of_comment (ip, &ip->lineno, 0);
- }
- break;
- case '<':
- if (skipping_include_directive) {
- while (bp < endb && *bp != '>' && *bp != '\n') {
- if (*bp == '\\' && bp[1] == '\n') {
- ip->lineno++;
- bp++;
- }
- bp++;
- }
- }
- break;
- case '\"':
- if (skipping_include_directive) {
- while (bp < endb && *bp != '\n') {
- if (*bp == '"') {
- bp++;
- break;
- }
- if (*bp == '\\' && bp[1] == '\n') {
- ip->lineno++;
- bp++;
- }
- bp++;
- }
- break;
- }
- /* Fall through. */
- case '\'':
- bp = skip_quoted_string (bp - 1, endb, ip->lineno, &ip->lineno,
- NULL_PTR, NULL_PTR);
- break;
- case '\\':
- /* Char after backslash loses its special meaning in some cases. */
- if (*bp == '\n') {
- ++ip->lineno;
- bp++;
- } else if (traditional && bp < endb)
- bp++;
- break;
- case '\n':
- ++ip->lineno;
- beg_of_line = bp;
- skipping_include_directive = 0;
- break;
- case '%':
- if (beg_of_line == 0 || traditional)
- break;
- ip->bufp = bp - 1;
- while (bp[0] == '\\' && bp[1] == '\n')
- bp += 2;
- if (*bp == ':')
- goto sharp_token;
- break;
- case '#':
- /* # keyword: a # must be first nonblank char on the line */
- if (beg_of_line == 0)
- break;
- ip->bufp = bp - 1;
- sharp_token:
- /* Scan from start of line, skipping whitespace, comments
- and backslash-newlines, and see if we reach this #.
- If not, this # is not special. */
- bp = beg_of_line;
- /* If -traditional, require # to be at beginning of line. */
- if (!traditional) {
- while (1) {
- if (is_hor_space[*bp])
- bp++;
- else if (*bp == '\\' && bp[1] == '\n')
- bp += 2;
- else if (*bp == '/' && bp[1] == '*') {
- bp += 2;
- while (1)
- {
- if (*bp == '*')
- {
- if (bp[1] == '/')
- {
- bp += 2;
- break;
- }
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length;
- length = local_mblen (bp, endb - bp);
- if (length > 1)
- bp += (length - 1);
-#endif
- }
- bp++;
- }
- }
- /* There is no point in trying to deal with C++ // comments here,
- because if there is one, then this # must be part of the
- comment and we would never reach here. */
- else break;
- }
- }
- if (bp != ip->bufp) {
- bp = ip->bufp + 1; /* Reset bp to after the #. */
- break;
- }
-
- bp = ip->bufp + 1; /* Point after the '#' */
- if (ip->bufp[0] == '%') {
- /* Skip past the ':' again. */
- while (*bp == '\\') {
- ip->lineno++;
- bp += 2;
- }
- bp++;
- }
-
- /* Skip whitespace and \-newline. */
- while (1) {
- if (is_hor_space[*bp])
- bp++;
- else if (*bp == '\\' && bp[1] == '\n')
- bp += 2;
- else if (*bp == '/') {
- if (bp[1] == '\\')
- newline_fix (bp + 1);
- if (bp[1] == '*') {
- for (bp += 2; ; bp++) {
- if (*bp == '\n')
- ip->lineno++;
- else if (*bp == '*') {
- if (bp[-1] == '/' && warn_comments)
- warning ("`/*' within comment");
- if (bp[1] == '\\')
- newline_fix (bp + 1);
- if (bp[1] == '/')
- break;
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length;
- length = local_mblen (bp, endb - bp);
- if (length > 1)
- bp += (length - 1);
-#endif
- }
- }
- bp += 2;
- } else if (bp[1] == '/' && cplusplus_comments) {
- for (bp += 2; ; bp++) {
- if (*bp == '\n')
- break;
- if (*bp == '\\' && bp[1] == '\n')
- {
- if (warn_comments)
- warning ("multiline `//' comment");
- ip->lineno++;
- bp++;
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length;
- length = local_mblen (bp, endb - bp);
- if (length > 1)
- bp += (length - 1);
-#endif
- }
- }
- } else
- break;
- } else
- break;
- }
-
- cp = bp;
-
- /* Now find end of directive name.
- If we encounter a backslash-newline, exchange it with any following
- symbol-constituents so that we end up with a contiguous name. */
-
- while (1) {
- if (is_idchar[*bp])
- bp++;
- else {
- if (*bp == '\\')
- name_newline_fix (bp);
- if (is_idchar[*bp])
- bp++;
- else break;
- }
- }
- ident_length = bp - cp;
- ident = cp;
- after_ident = bp;
-
- /* A line of just `#' becomes blank. */
-
- if (ident_length == 0 && *after_ident == '\n') {
- continue;
- }
-
- if (ident_length == 0 || !is_idstart[*ident]) {
- U_CHAR *p = ident;
- while (is_idchar[*p]) {
- if (*p < '0' || *p > '9')
- break;
- p++;
- }
- /* Handle # followed by a line number. */
- if (p != ident && !is_idchar[*p]) {
- if (pedantic)
- pedwarn ("`#' followed by integer");
- continue;
- }
-
- /* Avoid error for `###' and similar cases unless -pedantic. */
- if (p == ident) {
- while (*p == '#' || is_hor_space[*p]) p++;
- if (*p == '\n') {
- if (pedantic && !lang_asm)
- pedwarn ("invalid preprocessing directive");
- continue;
- }
- }
-
- if (!lang_asm && pedantic)
- pedwarn ("invalid preprocessing directive name");
- continue;
- }
-
- for (kt = directive_table; kt->length >= 0; kt++) {
- IF_STACK_FRAME *temp;
- if (ident_length == kt->length
- && bcmp (cp, kt->name, kt->length) == 0) {
- /* If we are asked to return on next directive, do so now. */
- if (any)
- goto done;
-
- switch (kt->type) {
- case T_IF:
- case T_IFDEF:
- case T_IFNDEF:
- temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
- temp->next = if_stack;
- if_stack = temp;
- temp->lineno = ip->lineno;
- temp->fname = ip->nominal_fname;
- temp->fname_len = ip->nominal_fname_len;
- temp->type = kt->type;
- break;
- case T_ELSE:
- case T_ENDIF:
- if (pedantic && if_stack != save_if_stack)
- validate_else (bp, endb);
- case T_ELIF:
- if (if_stack == instack[indepth].if_stack) {
- error ("`#%s' not within a conditional", kt->name);
- break;
- }
- else if (if_stack == save_if_stack)
- goto done; /* found what we came for */
-
- if (kt->type != T_ENDIF) {
- if (if_stack->type == T_ELSE)
- error ("`#else' or `#elif' after `#else'");
- if_stack->type = kt->type;
- break;
- }
-
- temp = if_stack;
- if_stack = if_stack->next;
- free (temp);
- break;
-
- case T_INCLUDE:
- case T_INCLUDE_NEXT:
- case T_IMPORT:
- skipping_include_directive = 1;
- break;
-
- default:
- break;
- }
- break;
- }
- }
- /* Don't let erroneous code go by. */
- if (kt->length < 0 && !lang_asm && pedantic)
- pedwarn ("invalid preprocessing directive name");
- }
- }
-
- ip->bufp = bp;
- /* after this returns, rescan will exit because ip->bufp
- now points to the end of the buffer.
- rescan is responsible for the error message also. */
-
- done:
- if (output_conditionals && op != 0) {
- static const char * const ptr = "#endfailed\n";
- int len = strlen (ptr);
-
- if (op->bufp > op->buf && op->bufp[-1] != '\n')
- {
- *op->bufp++ = '\n';
- op->lineno++;
- }
- check_expand (op, beg_of_line - beg_of_group);
- bcopy ((const PTR) beg_of_group, (PTR) op->bufp,
- beg_of_line - beg_of_group);
- op->bufp += beg_of_line - beg_of_group;
- op->lineno += ip->lineno - beg_lineno;
- check_expand (op, len);
- bcopy (ptr, (char *) op->bufp, len);
- op->bufp += len;
- op->lineno++;
- }
-}
-
-/* Handle a #else directive. Do this by just continuing processing
- without changing if_stack ; this is so that the error message
- for missing #endif's etc. will point to the original #if. It
- is possible that something different would be better. */
-
-static int
-do_else (buf, limit, op, keyword)
- U_CHAR *buf, *limit;
- FILE_BUF *op;
- struct directive *keyword ATTRIBUTE_UNUSED;
-{
- FILE_BUF *ip = &instack[indepth];
-
- if (pedantic) {
- SKIP_WHITE_SPACE (buf);
- if (buf != limit)
- pedwarn ("text following `#else' violates ANSI standard");
- }
-
- if (if_stack == instack[indepth].if_stack) {
- error ("`#else' not within a conditional");
- return 0;
- } else {
- /* #ifndef can't have its special treatment for containing the whole file
- if it has a #else clause. */
- if_stack->control_macro = 0;
-
- if (if_stack->type != T_IF && if_stack->type != T_ELIF) {
- error ("`#else' after `#else'");
- fprintf (stderr, " (matches line %d", if_stack->lineno);
- if (! (if_stack->fname_len == ip->nominal_fname_len
- && !bcmp (if_stack->fname, ip->nominal_fname,
- if_stack->fname_len))) {
- fprintf (stderr, ", file ");
- fwrite (if_stack->fname, sizeof if_stack->fname[0],
- if_stack->fname_len, stderr);
- }
- fprintf (stderr, ")\n");
- }
- if_stack->type = T_ELSE;
- }
-
- if (if_stack->if_succeeded)
- skip_if_group (ip, 0, op);
- else {
- ++if_stack->if_succeeded; /* continue processing input */
- output_line_directive (ip, op, 1, same_file);
- }
- return 0;
-}
-
-/* Unstack after #endif directive. */
-
-static int
-do_endif (buf, limit, op, keyword)
- U_CHAR *buf, *limit;
- FILE_BUF *op;
- struct directive *keyword ATTRIBUTE_UNUSED;
-{
- if (pedantic) {
- SKIP_WHITE_SPACE (buf);
- if (buf != limit)
- pedwarn ("text following `#endif' violates ANSI standard");
- }
-
- if (if_stack == instack[indepth].if_stack)
- error ("unbalanced `#endif'");
- else {
- IF_STACK_FRAME *temp = if_stack;
- if_stack = if_stack->next;
- if (temp->control_macro != 0) {
- /* This #endif matched a #ifndef at the start of the file.
- See if it is at the end of the file. */
- FILE_BUF *ip = &instack[indepth];
- U_CHAR *p = ip->bufp;
- U_CHAR *ep = ip->buf + ip->length;
-
- while (p != ep) {
- U_CHAR c = *p++;
- if (!is_space[c]) {
- if (c == '/'
- && (*p == '*' || (cplusplus_comments && *p == '/'))) {
- /* Skip this comment. */
- int junk = 0;
- U_CHAR *save_bufp = ip->bufp;
- ip->bufp = p + 1;
- p = skip_to_end_of_comment (ip, &junk, 1);
- ip->bufp = save_bufp;
- } else
- goto fail;
- }
- }
- /* If we get here, this #endif ends a #ifndef
- that contains all of the file (aside from whitespace).
- Arrange not to include the file again
- if the macro that was tested is defined.
-
- Do not do this for the top-level file in a -include or any
- file in a -imacros. */
- if (indepth != 0
- && ! (indepth == 1 && no_record_file)
- && ! (no_record_file && no_output))
- record_control_macro (ip->inc, temp->control_macro);
- fail: ;
- }
- free (temp);
- output_line_directive (&instack[indepth], op, 1, same_file);
- }
- return 0;
-}
-
-/* When an #else or #endif is found while skipping failed conditional,
- if -pedantic was specified, this is called to warn about text after
- the directive name. P points to the first char after the directive
- name. */
-
-static void
-validate_else (p, limit)
- register const U_CHAR *p;
- register const U_CHAR *limit;
-{
- /* Advance P over whitespace and comments. */
- while (1) {
- while (*p == '\\' && p[1] == '\n')
- p += 2;
- if (is_hor_space[*p])
- p++;
- else if (*p == '/') {
- while (p[1] == '\\' && p[2] == '\n')
- p += 2;
- if (p[1] == '*') {
- /* Don't bother warning about unterminated comments
- since that will happen later. Just be sure to exit. */
- for (p += 2; ; p++) {
- if (p == limit)
- return;
- if (*p == '*') {
- while (p[1] == '\\' && p[2] == '\n')
- p += 2;
- if (p[1] == '/') {
- p += 2;
- break;
- }
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length;
- length = local_mblen (p, limit - p);
- if (length > 1)
- p += (length - 1);
-#endif
- }
- }
- }
- else if (cplusplus_comments && p[1] == '/')
- return;
- else break;
- } else break;
- }
- if (*p != '\n')
- pedwarn ("text following `#else' or `#endif' violates ANSI standard");
-}
-\f
-/* Skip a comment, assuming the input ptr immediately follows the
- initial slash-star. Bump *LINE_COUNTER for each newline.
- (The canonical line counter is &ip->lineno.)
- Don't use this routine (or the next one) if bumping the line
- counter is not sufficient to deal with newlines in the string.
-
- If NOWARN is nonzero, don't warn about slash-star inside a comment.
- This feature is useful when processing a comment that is going to
- be processed or was processed at another point in the preprocessor,
- to avoid a duplicate warning. Likewise for unterminated comment
- errors. */
-
-static U_CHAR *
-skip_to_end_of_comment (ip, line_counter, nowarn)
- register FILE_BUF *ip;
- int *line_counter; /* place to remember newlines, or NULL */
- int nowarn;
-{
- register U_CHAR *limit = ip->buf + ip->length;
- register U_CHAR *bp = ip->bufp;
- FILE_BUF *op = put_out_comments && !line_counter ? &outbuf : (FILE_BUF *) 0;
- int start_line = line_counter ? *line_counter : 0;
-
- /* JF this line_counter stuff is a crock to make sure the
- comment is only put out once, no matter how many times
- the comment is skipped. It almost works */
- if (op) {
- *op->bufp++ = '/';
- *op->bufp++ = bp[-1];
- }
- if (cplusplus_comments && bp[-1] == '/') {
- for (; bp < limit; bp++) {
- if (*bp == '\n')
- break;
- if (*bp == '\\' && bp + 1 < limit && bp[1] == '\n')
- {
- if (!nowarn && warn_comments)
- warning ("multiline `//' comment");
- if (line_counter)
- ++*line_counter;
- if (op)
- {
- ++op->lineno;
- *op->bufp++ = *bp;
- }
- ++bp;
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length;
- length = local_mblen (bp, limit - bp);
- if (length > 1)
- {
- if (op)
- {
- bcopy (bp, op->bufp, length - 1);
- op->bufp += (length - 1);
- }
- bp += (length - 1);
- }
-#endif
- }
- if (op)
- *op->bufp++ = *bp;
- }
- ip->bufp = bp;
- return bp;
- }
- while (bp < limit) {
- if (op)
- *op->bufp++ = *bp;
- switch (*bp++) {
- case '\n':
- /* If this is the end of the file, we have an unterminated comment.
- Don't swallow the newline. We are guaranteed that there will be a
- trailing newline and various pieces assume it's there. */
- if (bp == limit)
- {
- --bp;
- --limit;
- break;
- }
- if (line_counter != NULL)
- ++*line_counter;
- if (op)
- ++op->lineno;
- break;
- case '*':
- if (bp[-2] == '/' && !nowarn && warn_comments)
- warning ("`/*' within comment");
- if (*bp == '\\')
- newline_fix (bp);
- if (*bp == '/') {
- if (op)
- *op->bufp++ = '/';
- ip->bufp = ++bp;
- return bp;
- }
- break;
-#ifdef MULTIBYTE_CHARS
- default:
- {
- int length;
- bp--;
- length = local_mblen (bp, limit - bp);
- if (length <= 0)
- length = 1;
- if (op)
- {
- op->bufp--;
- bcopy (bp, op->bufp, length);
- op->bufp += length;
- }
- bp += length;
- }
-#endif
- }
- }
-
- if (!nowarn)
- error_with_line (line_for_error (start_line), "unterminated comment");
- ip->bufp = bp;
- return bp;
-}
-
-/* Skip over a quoted string. BP points to the opening quote.
- Returns a pointer after the closing quote. Don't go past LIMIT.
- START_LINE is the line number of the starting point (but it need
- not be valid if the starting point is inside a macro expansion).
-
- The input stack state is not changed.
-
- If COUNT_NEWLINES is nonzero, it points to an int to increment
- for each newline passed; also, warn about any white space
- just before line end.
-
- If BACKSLASH_NEWLINES_P is nonzero, store 1 thru it
- if we pass a backslash-newline.
-
- If EOFP is nonzero, set *EOFP to 1 if the string is unterminated. */
-
-static U_CHAR *
-skip_quoted_string (bp, limit, start_line, count_newlines, backslash_newlines_p, eofp)
- register const U_CHAR *bp;
- register const U_CHAR *limit;
- int start_line;
- int *count_newlines;
- int *backslash_newlines_p;
- int *eofp;
-{
- register U_CHAR c, match;
-
- match = *bp++;
- while (1) {
- if (bp >= limit) {
- error_with_line (line_for_error (start_line),
- "unterminated string or character constant");
- error_with_line (multiline_string_line,
- "possible real start of unterminated constant");
- multiline_string_line = 0;
- if (eofp)
- *eofp = 1;
- break;
- }
- c = *bp++;
- if (c == '\\') {
- while (*bp == '\\' && bp[1] == '\n') {
- if (backslash_newlines_p)
- *backslash_newlines_p = 1;
- if (count_newlines)
- ++*count_newlines;
- bp += 2;
- }
- if (*bp == '\n') {
- if (backslash_newlines_p)
- *backslash_newlines_p = 1;
- if (count_newlines)
- ++*count_newlines;
- }
- bp++;
- } else if (c == '\n') {
- if (traditional) {
- /* Unterminated strings and character constants are 'valid'. */
- bp--; /* Don't consume the newline. */
- if (eofp)
- *eofp = 1;
- break;
- }
- if (match == '\'') {
- error_with_line (line_for_error (start_line),
- "unterminated character constant");
- bp--;
- if (eofp)
- *eofp = 1;
- break;
- }
- /* If not traditional, then allow newlines inside strings. */
- if (count_newlines) {
- if (warn_white_space && is_hor_space[bp[-2]])
- warning ("white space at end of line in string");
- ++*count_newlines;
- }
- if (multiline_string_line == 0) {
- if (pedantic)
- pedwarn_with_line (line_for_error (start_line),
- "string constant runs past end of line");
- multiline_string_line = start_line;
- }
- } else if (c == match)
- break;
-#ifdef MULTIBYTE_CHARS
- {
- int length;
- --bp;
- length = local_mblen (bp, limit - bp);
- if (length <= 0)
- length = 1;
- bp += length;
- }
-#endif
- }
- return (U_CHAR *) bp;
-}
-
-/* Place into DST a quoted string representing the string SRC.
- SRCLEN is the length of SRC; SRC may contain null bytes.
- Return the address of DST's terminating null. */
-
-static char *
-quote_string (dst, src, srclen)
- char *dst;
- const char *src;
- size_t srclen;
-{
- U_CHAR c;
- const char *srclim = src + srclen;
-
- *dst++ = '\"';
- while (src != srclim)
- switch ((c = *src++))
- {
- default:
- if (ISPRINT (c))
- *dst++ = c;
- else
- {
- sprintf (dst, "\\%03o", c);
- dst += 4;
- }
- break;
-
- case '\"':
- case '\\':
- *dst++ = '\\';
- *dst++ = c;
- break;
- }
-
- *dst++ = '\"';
- *dst = '\0';
- return dst;
-}
-
-/* Skip across a group of balanced parens, starting from IP->bufp.
- IP->bufp is updated. Use this with IP->bufp pointing at an open-paren.
-
- This does not handle newlines, because it's used for the arg of #if,
- where there aren't any newlines. Also, backslash-newline can't appear. */
-
-static U_CHAR *
-skip_paren_group (ip)
- register FILE_BUF *ip;
-{
- U_CHAR *limit = ip->buf + ip->length;
- U_CHAR *p = ip->bufp;
- int depth = 0;
- int lines_dummy = 0;
-
- while (p != limit) {
- int c = *p++;
- switch (c) {
- case '(':
- depth++;
- break;
-
- case ')':
- depth--;
- if (depth == 0)
- return ip->bufp = p;
- break;
-
- case '/':
- if (*p == '*') {
- ip->bufp = p;
- p = skip_to_end_of_comment (ip, &lines_dummy, 0);
- p = ip->bufp;
- }
-
- case '"':
- case '\'':
- {
- int eofp = 0;
- p = skip_quoted_string (p - 1, limit, 0, NULL_PTR, NULL_PTR, &eofp);
- if (eofp)
- return ip->bufp = p;
- }
- break;
- }
- }
-
- ip->bufp = p;
- return p;
-}
-\f
-/* Write out a #line directive, for instance, after an #include file.
- If CONDITIONAL is nonzero, we can omit the #line if it would
- appear to be a no-op, and we can output a few newlines instead
- if we want to increase the line number by a small amount.
- FILE_CHANGE says whether we are entering a file, leaving, or neither. */
-
-static void
-output_line_directive (ip, op, conditional, file_change)
- FILE_BUF *ip, *op;
- int conditional;
- enum file_change_code file_change;
-{
- int len;
- char *line_directive_buf, *line_end;
-
- if (no_line_directives
- || ip->fname == NULL
- || no_output) {
- op->lineno = ip->lineno;
- return;
- }
-
- if (conditional) {
- if (ip->lineno == op->lineno)
- return;
-
- /* If the inherited line number is a little too small,
- output some newlines instead of a #line directive. */
- if (ip->lineno > op->lineno && ip->lineno < op->lineno + 8) {
- check_expand (op, 10);
- while (ip->lineno > op->lineno) {
- *op->bufp++ = '\n';
- op->lineno++;
- }
- return;
- }
- }
-
- /* Output a positive line number if possible. */
- while (ip->lineno <= 0 && ip->bufp - ip->buf < ip->length
- && *ip->bufp == '\n') {
- ip->lineno++;
- ip->bufp++;
- }
-
- line_directive_buf = (char *) alloca (4 * ip->nominal_fname_len + 100);
- sprintf (line_directive_buf, "# %d ", ip->lineno);
- line_end = quote_string (line_directive_buf + strlen (line_directive_buf),
- ip->nominal_fname, ip->nominal_fname_len);
- if (file_change != same_file) {
- *line_end++ = ' ';
- *line_end++ = file_change == enter_file ? '1' : '2';
- }
- /* Tell cc1 if following text comes from a system header file. */
- if (ip->system_header_p) {
- *line_end++ = ' ';
- *line_end++ = '3';
- }
-#ifndef NO_IMPLICIT_EXTERN_C
- /* Tell cc1plus if following text should be treated as C. */
- if (ip->system_header_p == 2 && cplusplus) {
- *line_end++ = ' ';
- *line_end++ = '4';
- }
-#endif
- *line_end++ = '\n';
- len = line_end - line_directive_buf;
- check_expand (op, len + 1);
- if (op->bufp > op->buf && op->bufp[-1] != '\n')
- *op->bufp++ = '\n';
- bcopy ((const PTR) line_directive_buf, (PTR) op->bufp, len);
- op->bufp += len;
- op->lineno = ip->lineno;
-}
-\f
-/* This structure represents one parsed argument in a macro call.
- `raw' points to the argument text as written (`raw_length' is its length).
- `expanded' points to the argument's macro-expansion
- (its length is `expand_length', and its allocated size is `expand_size').
- `stringified_length_bound' is an upper bound on the length
- the argument would have if stringified.
- `use_count' is the number of times this macro arg is substituted
- into the macro. If the actual use count exceeds 10,
- the value stored is 10.
- `free1' and `free2', if nonzero, point to blocks to be freed
- when the macro argument data is no longer needed.
- `free_ptr', if nonzero, points to a value of instack[i].free_ptr
- where the raw field points somewhere into this string. The purpose
- of this is to hold onto instack[i].buf for macro arguments, even
- when the element has been popped off the input stack.
-*/
-
-struct argdata {
- U_CHAR *raw, *expanded;
- int raw_length, expand_length, expand_size;
- int stringified_length_bound;
- U_CHAR *free1, *free2;
- U_CHAR *free_ptr;
- int newlines;
- char use_count;
-};
-
-/* Expand a macro call.
- HP points to the symbol that is the macro being called.
- Put the result of expansion onto the input stack
- so that subsequent input by our caller will use it.
-
- If macro wants arguments, caller has already verified that
- an argument list follows; arguments come from the input stack. */
-
-static void
-macroexpand (hp, op)
- HASHNODE *hp;
- FILE_BUF *op;
-{
- int nargs;
- DEFINITION *defn = hp->value.defn;
- register U_CHAR *xbuf;
- int xbuf_len;
- int start_line = instack[indepth].lineno;
- int rest_args, rest_zero;
-
- CHECK_DEPTH (return;);
-
- /* it might not actually be a macro. */
- if (hp->type != T_MACRO) {
- special_symbol (hp, op);
- return;
- }
-
- /* This macro is being used inside a #if, which means it must be */
- /* recorded as a precondition. */
- if (pcp_inside_if && pcp_outfile && defn->predefined)
- dump_single_macro (hp, pcp_outfile);
-
- nargs = defn->nargs;
-
- if (nargs >= 0) {
- register int i;
- struct argdata *args;
- int parse_error = 0;
-
- args = (struct argdata *) alloca ((nargs + 1) * sizeof (struct argdata));
-
- for (i = 0; i < nargs; i++) {
- args[i].raw = (U_CHAR *) "";
- args[i].expanded = 0;
- args[i].raw_length = args[i].expand_length = args[i].expand_size
- = args[i].stringified_length_bound = 0;
- args[i].free1 = args[i].free2 = 0;
- args[i].free_ptr = 0;
- args[i].use_count = 0;
- }
-
- /* Parse all the macro args that are supplied. I counts them.
- The first NARGS args are stored in ARGS.
- The rest are discarded.
- If rest_args is set then we assume macarg absorbed the rest of the args.
- */
- i = 0;
- rest_args = 0;
- do {
- /* Discard the open-parenthesis or comma before the next arg. */
- ++instack[indepth].bufp;
- if (rest_args)
- continue;
- if (i < nargs || (nargs == 0 && i == 0)) {
- /* If we are working on last arg which absorbs rest of args... */
- if (i == nargs - 1 && defn->rest_args)
- rest_args = 1;
- parse_error = macarg (&args[i], rest_args);
- }
- else
- parse_error = macarg (NULL_PTR, 0);
- if (parse_error) {
- error_with_line (line_for_error (start_line),
- "unterminated macro call");
- break;
- }
- i++;
- } while (*instack[indepth].bufp != ')');
-
- /* If we got one arg but it was just whitespace, call that 0 args. */
- if (i == 1) {
- register const U_CHAR *bp = args[0].raw;
- register const U_CHAR *lim = bp + args[0].raw_length;
- /* cpp.texi says for foo ( ) we provide one argument.
- However, if foo wants just 0 arguments, treat this as 0. */
- if (nargs == 0)
- while (bp != lim && is_space[*bp]) bp++;
- if (bp == lim)
- i = 0;
- }
-
- /* Don't output an error message if we have already output one for
- a parse error above. */
- rest_zero = 0;
- if (nargs == 0 && i > 0) {
- if (! parse_error)
- error ("arguments given to macro `%s'", hp->name);
- } else if (i < nargs) {
- /* traditional C allows foo() if foo wants one argument. */
- if (nargs == 1 && i == 0 && traditional)
- ;
- /* the rest args token is allowed to absorb 0 tokens */
- else if (i == nargs - 1 && defn->rest_args)
- rest_zero = 1;
- else if (parse_error)
- ;
- else if (i == 0)
- error ("macro `%s' used without args", hp->name);
- else if (i == 1)
- error ("macro `%s' used with just one arg", hp->name);
- else
- error ("macro `%s' used with only %d args", hp->name, i);
- } else if (i > nargs) {
- if (! parse_error)
- error ("macro `%s' used with too many (%d) args", hp->name, i);
- }
-
- /* Swallow the closeparen. */
- ++instack[indepth].bufp;
-
- /* If macro wants zero args, we parsed the arglist for checking only.
- Read directly from the macro definition. */
- if (nargs == 0) {
- xbuf = defn->expansion;
- xbuf_len = defn->length;
- } else {
- register U_CHAR *exp = defn->expansion;
- register int offset; /* offset in expansion,
- copied a piece at a time */
- register int totlen; /* total amount of exp buffer filled so far */
-
- register struct reflist *ap, *last_ap;
-
- /* Macro really takes args. Compute the expansion of this call. */
-
- /* Compute length in characters of the macro's expansion.
- Also count number of times each arg is used. */
- xbuf_len = defn->length;
- for (ap = defn->pattern; ap != NULL; ap = ap->next) {
- if (ap->stringify && args[ap->argno].stringified_length_bound == 0)
- /* macarg is not called for omitted arguments, as a result
- stringified_length_bound will be zero. We need to make
- enough space for "". */
- xbuf_len += 2;
- else if (ap->stringify)
- xbuf_len += args[ap->argno].stringified_length_bound;
- else if (ap->raw_before != 0 || ap->raw_after != 0 || traditional)
- /* Add 4 for two newline-space markers to prevent
- token concatenation. */
- xbuf_len += args[ap->argno].raw_length + 4;
- else {
- /* We have an ordinary (expanded) occurrence of the arg.
- So compute its expansion, if we have not already. */
- if (args[ap->argno].expanded == 0) {
- FILE_BUF obuf;
- obuf = expand_to_temp_buffer (args[ap->argno].raw,
- args[ap->argno].raw + args[ap->argno].raw_length,
- 1, 0);
-
- args[ap->argno].expanded = obuf.buf;
- args[ap->argno].expand_length = obuf.bufp - obuf.buf;
- args[ap->argno].expand_size = obuf.length;
- args[ap->argno].free2 = obuf.buf;
-
- xbuf_len += args[ap->argno].expand_length;
- } else {
- /* If the arg appears more than once, its later occurrences
- may have newline turned into backslash-'n', which is a
- factor of 2 expansion. */
- xbuf_len += 2 * args[ap->argno].expand_length;
- }
- /* Add 4 for two newline-space markers to prevent
- token concatenation. */
- xbuf_len += 4;
- }
- if (args[ap->argno].use_count < 10)
- args[ap->argno].use_count++;
- }
-
- xbuf = (U_CHAR *) xmalloc (xbuf_len + 1);
-
- /* Generate in XBUF the complete expansion
- with arguments substituted in.
- TOTLEN is the total size generated so far.
- OFFSET is the index in the definition
- of where we are copying from. */
- offset = totlen = 0;
- for (last_ap = NULL, ap = defn->pattern; ap != NULL;
- last_ap = ap, ap = ap->next) {
- register struct argdata *arg = &args[ap->argno];
- int count_before = totlen;
-
- /* Add chars to XBUF. */
- for (i = 0; i < ap->nchars; i++, offset++)
- xbuf[totlen++] = exp[offset];
-
- /* If followed by an empty rest arg with concatenation,
- delete the last run of nonwhite chars. */
- if (rest_zero && totlen > count_before
- && ((ap->rest_args && ap->raw_before != 0)
- || (last_ap != NULL && last_ap->rest_args
- && last_ap->raw_after != 0))) {
- /* Delete final whitespace. */
- while (totlen > count_before && is_space[xbuf[totlen - 1]]) {
- totlen--;
- }
-
- /* Delete the nonwhites before them. */
- while (totlen > count_before && ! is_space[xbuf[totlen - 1]]) {
- totlen--;
- }
- }
-
- if (ap->stringify != 0) {
- int arglen = arg->raw_length;
- int escaped = 0;
- int in_string = 0;
- int c;
- i = 0;
- while (i < arglen
- && (c = arg->raw[i], is_space[c]))
- i++;
- while (i < arglen
- && (c = arg->raw[arglen - 1], is_space[c]))
- arglen--;
- if (!traditional)
- xbuf[totlen++] = '\"'; /* insert beginning quote */
- for (; i < arglen; i++) {
- c = arg->raw[i];
-
- if (in_string) {
- /* Generate nothing for backslash-newline in a string. */
- if (c == '\\' && arg->raw[i + 1] == '\n') {
- i++;
- continue;
- }
- } else {
- /* Special markers
- generate nothing for a stringified argument. */
- if (c == '\n') {
- i++;
- continue;
- }
-
- /* Internal sequences of whitespace are replaced by one space
- except within a string or char token. */
- if (is_space[c]) {
- i++;
- while (is_space[(c = arg->raw[i])])
- /* Newline markers can occur within a whitespace sequence;
- consider them part of the sequence. */
- i += (c == '\n') + 1;
- i--;
- c = ' ';
- }
- }
-
- if (escaped)
- escaped = 0;
- else {
- if (c == '\\')
- escaped = 1;
- else if (in_string) {
- if (c == in_string)
- in_string = 0;
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length;
- length = local_mblen (arg->raw + i, arglen - i);
- if (length > 1)
- {
- bcopy (arg->raw + i, xbuf + totlen, length);
- i += length - 1;
- totlen += length;
- continue;
- }
-#endif
- }
- } else if (c == '\"' || c == '\'')
- in_string = c;
- }
-
- /* Escape double-quote, and backslashes in strings.
- Newlines in strings are best escaped as \n, since
- otherwise backslash-backslash-newline-newline is
- mishandled. The C Standard doesn't allow newlines in
- strings, so we can escape newlines as we please. */
- if (c == '\"'
- || (in_string
- && (c == '\\'
- || (c == '\n' ? (c = 'n', 1) : 0))))
- xbuf[totlen++] = '\\';
- /* We used to output e.g. \008 for control characters here,
- but this doesn't conform to the C Standard.
- Just output the characters as-is. */
- xbuf[totlen++] = c;
- }
- if (!traditional)
- xbuf[totlen++] = '\"'; /* insert ending quote */
- } else if (ap->raw_before != 0 || ap->raw_after != 0 || traditional) {
- const U_CHAR *p1 = arg->raw;
- const U_CHAR *l1 = p1 + arg->raw_length;
- if (ap->raw_before != 0) {
- while (p1 != l1 && is_space[*p1]) p1++;
- while (p1 != l1 && is_idchar[*p1])
- xbuf[totlen++] = *p1++;
- /* Delete any no-reexpansion marker that follows
- an identifier at the beginning of the argument
- if the argument is concatenated with what precedes it. */
- if (p1[0] == '\n' && p1[1] == '-')
- p1 += 2;
- } else if (!traditional) {
- /* Ordinary expanded use of the argument.
- Put in newline-space markers to prevent token pasting. */
- xbuf[totlen++] = '\n';
- xbuf[totlen++] = ' ';
- }
- if (ap->raw_after != 0) {
- /* Arg is concatenated after: delete trailing whitespace,
- whitespace markers, and no-reexpansion markers. */
- while (p1 != l1) {
- if (is_space[l1[-1]]) l1--;
- else if (l1[-1] == '-') {
- const U_CHAR *p2 = l1 - 1;
- /* If a `-' is preceded by an odd number of newlines then it
- and the last newline are a no-reexpansion marker. */
- while (p2 != p1 && p2[-1] == '\n') p2--;
- if ((l1 - 1 - p2) & 1) {
- l1 -= 2;
- }
- else break;
- }
- else break;
- }
- }
-
- bcopy ((const PTR) p1, (PTR) (xbuf + totlen), l1 - p1);
- totlen += l1 - p1;
- if (!traditional && ap->raw_after == 0) {
- /* Ordinary expanded use of the argument.
- Put in newline-space markers to prevent token pasting. */
- xbuf[totlen++] = '\n';
- xbuf[totlen++] = ' ';
- }
- } else {
- /* Ordinary expanded use of the argument.
- Put in newline-space markers to prevent token pasting. */
- if (!traditional) {
- xbuf[totlen++] = '\n';
- xbuf[totlen++] = ' ';
- }
- bcopy ((const PTR) arg->expanded, (PTR) (xbuf + totlen),
- arg->expand_length);
- totlen += arg->expand_length;
- if (!traditional) {
- xbuf[totlen++] = '\n';
- xbuf[totlen++] = ' ';
- }
- /* If a macro argument with newlines is used multiple times,
- then only expand the newlines once. This avoids creating output
- lines which don't correspond to any input line, which confuses
- gdb and gcov. */
- if (arg->use_count > 1 && arg->newlines > 0) {
- /* Don't bother doing change_newlines for subsequent
- uses of arg. */
- arg->use_count = 1;
- change_newlines (arg);
- }
- }
-
- if (totlen > xbuf_len)
- abort ();
- }
-
- /* If there is anything left of the definition after handling
- the arg list, copy that in too. */
-
- for (i = offset; i < defn->length; i++) {
- /* if we've reached the end of the macro */
- if (exp[i] == ')')
- rest_zero = 0;
- if (! (rest_zero && last_ap != NULL && last_ap->rest_args
- && last_ap->raw_after != 0))
- xbuf[totlen++] = exp[i];
- }
-
- xbuf[totlen] = 0;
- xbuf_len = totlen;
-
- for (i = 0; i < nargs; i++) {
- if (args[i].free_ptr != 0) {
- U_CHAR *buf = args[i].free_ptr;
- int d;
- for (d = indepth; d >= 0; --d) {
- if (instack[d].buf == buf) {
- instack[d].free_ptr = buf; /* Give ownership back to instack */
- goto no_free;
- }
- }
- free (buf); /* buf is not on the stack; must have been popped */
- no_free:;
- }
- if (args[i].free1 != 0)
- free (args[i].free1);
- if (args[i].free2 != 0)
- free (args[i].free2);
- }
- }
- } else {
- xbuf = defn->expansion;
- xbuf_len = defn->length;
- }
-
- /* Now put the expansion on the input stack
- so our caller will commence reading from it. */
- {
- register FILE_BUF *ip2;
-
- ip2 = &instack[++indepth];
-
- ip2->fname = 0;
- ip2->nominal_fname = 0;
- ip2->nominal_fname_len = 0;
- ip2->inc = 0;
- /* This may not be exactly correct, but will give much better error
- messages for nested macro calls than using a line number of zero. */
- ip2->lineno = start_line;
- ip2->buf = xbuf;
- ip2->length = xbuf_len;
- ip2->bufp = xbuf;
- ip2->free_ptr = (nargs > 0) ? xbuf : 0;
- ip2->macro = hp;
- ip2->if_stack = if_stack;
- ip2->system_header_p = 0;
-
- /* Recursive macro use sometimes works traditionally.
- #define foo(x,y) bar (x (y,0), y)
- foo (foo, baz) */
-
- if (!traditional)
- hp->type = T_DISABLED;
- }
-}
-\f
-/* Parse a macro argument and store the info on it into *ARGPTR.
- REST_ARGS is passed to macarg1 to make it absorb the rest of the args.
- Return nonzero to indicate a syntax error. */
-
-static int
-macarg (argptr, rest_args)
- register struct argdata *argptr;
- int rest_args;
-{
- FILE_BUF *ip = &instack[indepth];
- int paren = 0;
- int lineno0 = ip->lineno;
- int comments = 0;
- int result = 0;
-
- /* Try to parse as much of the argument as exists at this
- input stack level. */
- U_CHAR *bp = macarg1 (ip->bufp, ip->buf + ip->length, ip->macro,
- &paren, &ip->lineno, &comments, rest_args);
-
- /* If we find the end of the argument at this level,
- set up *ARGPTR to point at it in the input stack. */
- if (!(ip->fname != 0 && (ip->lineno != lineno0 || comments != 0))
- && bp != ip->buf + ip->length) {
- if (argptr != 0) {
- argptr->raw = ip->bufp;
- argptr->raw_length = bp - ip->bufp;
- argptr->newlines = ip->lineno - lineno0;
- /* The next two statements transfer ownership of the the buffer
- from ip to argptr. Note that the second statement ensures that
- a given free_ptr is owned by at most one macro argument. */
- argptr->free_ptr = ip->free_ptr;
- ip->free_ptr = 0;
- }
- ip->bufp = bp;
- } else {
- /* This input stack level ends before the macro argument does.
- We must pop levels and keep parsing.
- Therefore, we must allocate a temporary buffer and copy
- the macro argument into it. */
- int bufsize = bp - ip->bufp;
- int extra = ip->lineno - lineno0;
- U_CHAR *buffer = (U_CHAR *) xmalloc (bufsize + extra + 1);
- int final_start = 0;
-
- bcopy ((const PTR) ip->bufp, (PTR) buffer, bufsize);
- ip->bufp = bp;
-
- while (bp == ip->buf + ip->length) {
- if (instack[indepth].macro == 0) {
- result = 1;
- break;
- }
- ip->macro->type = T_MACRO;
- if (ip->free_ptr)
- free (ip->free_ptr);
- ip = &instack[--indepth];
- lineno0 = ip->lineno;
- comments = 0;
- bp = macarg1 (ip->bufp, ip->buf + ip->length, ip->macro, &paren,
- &ip->lineno, &comments, rest_args);
- final_start = bufsize;
- bufsize += bp - ip->bufp;
- extra += ip->lineno - lineno0;
- buffer = (U_CHAR *) xrealloc (buffer, bufsize + extra + 1);
- bcopy ((const PTR) ip->bufp, (PTR) (buffer + bufsize - (bp - ip->bufp)),
- bp - ip->bufp);
- ip->bufp = bp;
- }
-
- /* Now, if arg is actually wanted, record its raw form,
- discarding comments and duplicating newlines in whatever
- part of it did not come from a macro expansion.
- EXTRA space has been preallocated for duplicating the newlines.
- FINAL_START is the index of the start of that part. */
- if (argptr != 0) {
- argptr->raw = buffer;
- argptr->raw_length = bufsize;
- argptr->free1 = buffer;
- argptr->newlines = ip->lineno - lineno0;
- if ((argptr->newlines || comments) && ip->fname != 0)
- argptr->raw_length
- = final_start +
- discard_comments (argptr->raw + final_start,
- argptr->raw_length - final_start,
- argptr->newlines);
- argptr->raw[argptr->raw_length] = 0;
- if (argptr->raw_length > bufsize + extra)
- abort ();
- }
- }
-
- /* If we are not discarding this argument,
- macroexpand it and compute its length as stringified.
- All this info goes into *ARGPTR. */
-
- if (argptr != 0) {
- register const U_CHAR *buf, *lim;
- register int totlen;
-
- buf = argptr->raw;
- lim = buf + argptr->raw_length;
-
- while (buf != lim && is_space[*buf])
- buf++;
- while (buf != lim && is_space[lim[-1]])
- lim--;
- totlen = traditional ? 0 : 2; /* Count opening and closing quote. */
- while (buf != lim) {
- register U_CHAR c = *buf++;
- totlen++;
- /* Internal sequences of whitespace are replaced by one space
- in most cases, but not always. So count all the whitespace
- in case we need to keep it all. */
-#if 0
- if (is_space[c])
- SKIP_ALL_WHITE_SPACE (buf);
- else
-#endif
- if (c == '\"' || c == '\\' || c == '\n') /* escape these chars */
- totlen++;
- }
- argptr->stringified_length_bound = totlen;
- }
- return result;
-}
-\f
-/* Scan text from START (inclusive) up to LIMIT (exclusive),
- taken from the expansion of MACRO,
- counting parens in *DEPTHPTR,
- and return if reach LIMIT
- or before a `)' that would make *DEPTHPTR negative
- or before a comma when *DEPTHPTR is zero.
- Single and double quotes are matched and termination
- is inhibited within them. Comments also inhibit it.
- Value returned is pointer to stopping place.
-
- Increment *NEWLINES each time a newline is passed.
- REST_ARGS notifies macarg1 that it should absorb the rest of the args.
- Set *COMMENTS to 1 if a comment is seen. */
-
-static U_CHAR *
-macarg1 (start, limit, macro, depthptr, newlines, comments, rest_args)
- U_CHAR *start;
- register const U_CHAR *limit;
- struct hashnode *macro;
- int *depthptr, *newlines, *comments;
- int rest_args;
-{
- register U_CHAR *bp = start;
-
- while (bp < limit) {
- switch (*bp) {
- case '(':
- (*depthptr)++;
- break;
- case ')':
- if (--(*depthptr) < 0)
- return bp;
- break;
- case '\\':
- /* Traditionally, backslash makes following char not special. */
- if (traditional && bp + 1 < limit && bp[1] != '\n')
- bp++;
- break;
- case '\n':
- ++*newlines;
- break;
- case '/':
- if (macro)
- break;
- if (bp[1] == '\\')
- newline_fix (bp + 1);
- if (bp[1] == '*') {
- *comments = 1;
- for (bp += 2; bp < limit; bp++) {
- if (*bp == '\n')
- ++*newlines;
- else if (*bp == '*') {
- if (bp[-1] == '/' && warn_comments)
- warning ("`/*' within comment");
- if (bp[1] == '\\')
- newline_fix (bp + 1);
- if (bp[1] == '/') {
- bp++;
- break;
- }
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length;
- length = local_mblen (bp, limit - bp);
- if (length > 1)
- bp += (length - 1);
-#endif
- }
- }
- } else if (bp[1] == '/' && cplusplus_comments) {
- *comments = 1;
- for (bp += 2; bp < limit; bp++) {
- if (*bp == '\n') {
- ++*newlines;
- break;
- }
- if (*bp == '\\' && bp + 1 < limit && bp[1] == '\n')
- {
- ++*newlines;
- if (warn_comments)
- warning ("multiline `//' comment");
- ++bp;
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length;
- length = local_mblen (bp, limit - bp);
- if (length > 1)
- bp += (length - 1);
-#endif
- }
- }
- }
- break;
- case '\'':
- case '\"':
- {
- int quotec;
- for (quotec = *bp++; bp < limit && *bp != quotec; bp++) {
- if (*bp == '\\') {
- bp++;
- if (*bp == '\n')
- ++*newlines;
- while (*bp == '\\' && bp[1] == '\n') {
- bp += 2;
- ++*newlines;
- }
- } else if (*bp == '\n') {
- if (warn_white_space && is_hor_space[bp[-1]] && ! macro)
- warning ("white space at end of line in string");
- ++*newlines;
- if (quotec == '\'')
- break;
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length;
- length = local_mblen (bp, limit - bp);
- if (length > 1)
- bp += (length - 1);
-#endif
- }
- }
- }
- break;
- case ',':
- /* if we've returned to lowest level and we aren't absorbing all args */
- if ((*depthptr) == 0 && rest_args == 0)
- return bp;
- break;
- }
- bp++;
- }
-
- return bp;
-}
-\f
-/* Discard comments and duplicate newlines
- in the string of length LENGTH at START,
- except inside of string constants.
- The string is copied into itself with its beginning staying fixed.
-
- NEWLINES is the number of newlines that must be duplicated.
- We assume that that much extra space is available past the end
- of the string. */
-
-static int
-discard_comments (start, length, newlines)
- U_CHAR *start;
- int length;
- int newlines;
-{
- register U_CHAR *ibp;
- register U_CHAR *obp;
- register U_CHAR *limit;
- register int c;
-
- /* If we have newlines to duplicate, copy everything
- that many characters up. Then, in the second part,
- we will have room to insert the newlines
- while copying down.
- NEWLINES may actually be too large, because it counts
- newlines in string constants, and we don't duplicate those.
- But that does no harm. */
- if (newlines > 0) {
- ibp = start + length;
- obp = ibp + newlines;
- limit = start;
- while (limit != ibp)
- *--obp = *--ibp;
- }
-
- ibp = start + newlines;
- limit = start + length + newlines;
- obp = start;
-
- while (ibp < limit) {
- *obp++ = c = *ibp++;
- switch (c) {
- case '\n':
- /* Duplicate the newline. */
- *obp++ = '\n';
- break;
-
- case '\\':
- if (*ibp == '\n') {
- obp--;
- ibp++;
- }
- break;
-
- case '/':
- if (*ibp == '\\')
- newline_fix (ibp);
- /* Delete any comment. */
- if (cplusplus_comments && ibp[0] == '/') {
- /* Comments are equivalent to spaces. */
- obp[-1] = ' ';
- ibp++;
- while (ibp < limit)
- {
- if (*ibp == '\n')
- break;
- if (*ibp == '\\' && ibp + 1 < limit && ibp[1] == '\n')
- ibp++;
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length = local_mblen (ibp, limit - ibp);
- if (length > 1)
- ibp += (length - 1);
-#endif
- }
- ibp++;
- }
- break;
- }
- if (ibp[0] != '*' || ibp + 1 >= limit)
- break;
- /* Comments are equivalent to spaces.
- For -traditional, a comment is equivalent to nothing. */
- if (traditional)
- obp--;
- else
- obp[-1] = ' ';
- while (++ibp < limit) {
- if (ibp[0] == '*') {
- if (ibp[1] == '\\')
- newline_fix (ibp + 1);
- if (ibp[1] == '/') {
- ibp += 2;
- break;
- }
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length = local_mblen (ibp, limit - ibp);
- if (length > 1)
- ibp += (length - 1);
-#endif
- }
- }
- break;
-
- case '\'':
- case '\"':
- /* Notice and skip strings, so that we don't
- think that comments start inside them,
- and so we don't duplicate newlines in them. */
- {
- int quotec = c;
- while (ibp < limit) {
- *obp++ = c = *ibp++;
- if (c == quotec)
- break;
- if (c == '\n')
- {
- if (quotec == '\'')
- break;
- }
- else if (c == '\\') {
- if (ibp < limit && *ibp == '\n') {
- ibp++;
- obp--;
- } else {
- while (*ibp == '\\' && ibp[1] == '\n')
- ibp += 2;
- if (ibp < limit)
- *obp++ = *ibp++;
- }
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length;
- ibp--;
- length = local_mblen (ibp, limit - ibp);
- if (length > 1)
- {
- obp--;
- bcopy (ibp, obp, length);
- ibp += length;
- obp += length;
- }
- else
- ibp++;
-#endif
- }
- }
- }
- break;
- }
- }
-
- return obp - start;
-}
-\f
-/* Turn newlines to spaces in the macro argument ARG.
- Remove backslash-newline from string constants,
- and turn other newlines in string constants to backslash-'n'. */
-
-static void
-change_newlines (arg)
- struct argdata *arg;
-{
- U_CHAR *start = arg->expanded;
- int length = arg->expand_length;
- register U_CHAR *ibp;
- register U_CHAR *obp;
- register const U_CHAR *limit;
- register int c;
-
- ibp = start;
- limit = start + length;
- obp = start;
-
- while (ibp < limit) {
- *obp++ = c = *ibp++;
- switch (c) {
- case '\n':
- /* If this is a NEWLINE NEWLINE, then this is a real newline in the
- string. Skip past the newline and its duplicate.
- Put a space in the output. */
- if (*ibp == '\n')
- {
- ibp++;
- obp--;
- *obp++ = ' ';
- }
- break;
-
- case '\'':
- case '\"':
- /* Notice and skip strings, so that we don't delete newlines in them. */
- {
- int quotec = c;
- while (ibp < limit) {
- *obp++ = c = *ibp++;
- if (c == quotec)
- break;
- else if (c == '\\' && ibp < limit && *ibp == '\n')
- *obp++ = *ibp++;
- else if (c == '\n')
- {
- if (quotec == '\'')
- break;
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- int length;
- ibp--;
- length = local_mblen (ibp, limit - ibp);
- if (length > 1)
- {
- obp--;
- bcopy (ibp, obp, length);
- ibp += length;
- obp += length;
- }
- else
- ibp++;
-#endif
- }
- }
- }
- break;
- }
- }
-
- arg->expand_length = obp - arg->expanded;
-
- if (start != arg->expanded)
- free (start);
-}
-\f
-/* notice - output message to stderr */
-
-static void
-notice VPARAMS ((const char * msgid, ...))
-{
-#ifndef ANSI_PROTOTYPES
- const char * msgid;
-#endif
- va_list args;
-
- VA_START (args, msgid);
-
-#ifndef ANSI_PROTOTYPES
- msgid = va_arg (args, const char *);
-#endif
-
- vnotice (msgid, args);
- va_end (args);
-}
-
-static void
-vnotice (msgid, args)
- const char *msgid;
- va_list args;
-{
- vfprintf (stderr, _(msgid), args);
-}
-
-/* error - print error message and increment count of errors. */
-
-void
-error VPARAMS ((const char * msgid, ...))
-{
-#ifndef ANSI_PROTOTYPES
- const char * msgid;
-#endif
- va_list args;
-
- VA_START (args, msgid);
-
-#ifndef ANSI_PROTOTYPES
- msgid = va_arg (args, const char *);
-#endif
-
- verror (msgid, args);
- va_end (args);
-}
-
-void
-verror (msgid, args)
- const char *msgid;
- va_list args;
-{
- int i;
- FILE_BUF *ip = NULL;
-
- print_containing_files ();
-
- for (i = indepth; i >= 0; i--)
- if (instack[i].fname != NULL) {
- ip = &instack[i];
- break;
- }
-
- if (ip != NULL) {
- fwrite (ip->nominal_fname, sizeof ip->nominal_fname[0],
- ip->nominal_fname_len, stderr);
- fprintf (stderr, ":%d: ", ip->lineno);
- }
- vnotice (msgid, args);
- fprintf (stderr, "\n");
- errors++;
-}
-
-/* Error including a message from `errno'. */
-
-static void
-error_from_errno (name)
- const char *name;
-{
- int e = errno;
- int i;
- FILE_BUF *ip = NULL;
-
- print_containing_files ();
-
- for (i = indepth; i >= 0; i--)
- if (instack[i].fname != NULL) {
- ip = &instack[i];
- break;
- }
-
- if (ip != NULL) {
- fwrite (ip->nominal_fname, sizeof ip->nominal_fname[0],
- ip->nominal_fname_len, stderr);
- fprintf (stderr, ":%d: ", ip->lineno);
- }
-
- fprintf (stderr, "%s: %s\n", name, xstrerror (e));
-
- errors++;
-}
-
-/* Print error message but don't count it. */
-
-void
-warning VPARAMS ((const char * msgid, ...))
-{
-#ifndef ANSI_PROTOTYPES
- const char * msgid;
-#endif
- va_list args;
-
- VA_START (args, msgid);
-
-#ifndef ANSI_PROTOTYPES
- msgid = va_arg (args, const char *);
-#endif
-
- vwarning (msgid, args);
- va_end (args);
-}
-
-static void
-vwarning (msgid, args)
- const char *msgid;
- va_list args;
-{
- int i;
- FILE_BUF *ip = NULL;
-
- if (inhibit_warnings)
- return;
-
- if (warnings_are_errors)
- errors++;
-
- print_containing_files ();
-
- for (i = indepth; i >= 0; i--)
- if (instack[i].fname != NULL) {
- ip = &instack[i];
- break;
- }
-
- if (ip != NULL) {
- fwrite (ip->nominal_fname, sizeof ip->nominal_fname[0],
- ip->nominal_fname_len, stderr);
- fprintf (stderr, ":%d: ", ip->lineno);
- }
- notice ("warning: ");
- vnotice (msgid, args);
- fprintf (stderr, "\n");
-}
-
-static void
-error_with_line VPARAMS ((int line, const char * msgid, ...))
-{
-#ifndef ANSI_PROTOTYPES
- int line;
- const char * msgid;
-#endif
- va_list args;
-
- VA_START (args, msgid);
-
-#ifndef ANSI_PROTOTYPES
- line = va_arg (args, int);
- msgid = va_arg (args, const char *);
-#endif
-
- verror_with_line (line, msgid, args);
- va_end (args);
-}
-
-
-static void
-verror_with_line (line, msgid, args)
- int line;
- const char *msgid;
- va_list args;
-{
- int i;
- FILE_BUF *ip = NULL;
-
- print_containing_files ();
-
- for (i = indepth; i >= 0; i--)
- if (instack[i].fname != NULL) {
- ip = &instack[i];
- break;
- }
-
- if (ip != NULL) {
- fwrite (ip->nominal_fname, sizeof ip->nominal_fname[0],
- ip->nominal_fname_len, stderr);
- fprintf (stderr, ":%d: ", line);
- }
- vnotice (msgid, args);
- fprintf (stderr, "\n");
- errors++;
-}
-
-static void
-warning_with_line VPARAMS ((int line, const char * msgid, ...))
-{
-#ifndef ANSI_PROTOTYPES
- int line;
- const char * msgid;
-#endif
- va_list args;
-
- VA_START (args, msgid);
-
-#ifndef ANSI_PROTOTYPES
- line = va_arg (args, int);
- msgid = va_arg (args, const char *);
-#endif
-
- vwarning_with_line (line, msgid, args);
- va_end (args);
-}
-
-static void
-vwarning_with_line (line, msgid, args)
- int line;
- const char *msgid;
- va_list args;
-{
- int i;
- FILE_BUF *ip = NULL;
-
- if (inhibit_warnings)
- return;
-
- if (warnings_are_errors)
- errors++;
-
- print_containing_files ();
-
- for (i = indepth; i >= 0; i--)
- if (instack[i].fname != NULL) {
- ip = &instack[i];
- break;
- }
-
- if (ip != NULL) {
- fwrite (ip->nominal_fname, sizeof ip->nominal_fname[0],
- ip->nominal_fname_len, stderr);
- if (line)
- fprintf (stderr, ":%d: ", line);
- else
- fputs (": ", stderr);
- }
- notice ("warning: ");
- vnotice (msgid, args);
- fprintf (stderr, "\n");
-}
-
-/* Print an error message and maybe count it. */
-
-void
-pedwarn VPARAMS ((const char * msgid, ...))
-{
-#ifndef ANSI_PROTOTYPES
- const char * msgid;
-#endif
- va_list args;
-
- VA_START (args, msgid);
-
-#ifndef ANSI_PROTOTYPES
- msgid = va_arg (args, const char *);
-#endif
-
- if (pedantic_errors)
- verror (msgid, args);
- else
- vwarning (msgid, args);
- va_end (args);
-}
-
-void
-pedwarn_with_line VPARAMS ((int line, const char * msgid, ...))
-{
-#ifndef ANSI_PROTOTYPES
- int line;
- const char * msgid;
-#endif
- va_list args;
-
- VA_START (args, msgid);
-
-#ifndef ANSI_PROTOTYPES
- line = va_arg (args, int);
- msgid = va_arg (args, const char *);
-#endif
-
- if (pedantic_errors)
- verror_with_line (line, msgid, args);
- else
- vwarning_with_line (line, msgid, args);
- va_end (args);
-}
-
-/* Report a warning (or an error if pedantic_errors)
- giving specified file name and line number, not current. */
-
-static void
-pedwarn_with_file_and_line VPARAMS ((const char *file, size_t file_len,
- int line, const char * msgid, ...))
-{
-#ifndef ANSI_PROTOTYPES
- const char *file;
- size_t file_len;
- int line;
- const char * msgid;
-#endif
- va_list args;
-
- if (!pedantic_errors && inhibit_warnings)
- return;
-
- VA_START (args, msgid);
-
-#ifndef ANSI_PROTOTYPES
- file = va_arg (args, const char *);
- file_len = va_arg (args, size_t);
- line = va_arg (args, int);
- msgid = va_arg (args, const char *);
-#endif
-
- if (file) {
- fwrite (file, sizeof file[0], file_len, stderr);
- fprintf (stderr, ":%d: ", line);
- }
- if (pedantic_errors)
- errors++;
- if (!pedantic_errors)
- notice ("warning: ");
- vnotice (msgid, args);
- va_end (args);
- fprintf (stderr, "\n");
-}
-
-static void
-pedwarn_strange_white_space (ch)
- int ch;
-{
- switch (ch)
- {
- case '\f': pedwarn ("formfeed in preprocessing directive"); break;
- case '\r': pedwarn ("carriage return in preprocessing directive"); break;
- case '\v': pedwarn ("vertical tab in preprocessing directive"); break;
- default: abort ();
- }
-}
-\f
-/* Print the file names and line numbers of the #include
- directives which led to the current file. */
-
-static void
-print_containing_files ()
-{
- FILE_BUF *ip = NULL;
- int i;
- int first = 1;
-
- /* If stack of files hasn't changed since we last printed
- this info, don't repeat it. */
- if (last_error_tick == input_file_stack_tick)
- return;
-
- for (i = indepth; i >= 0; i--)
- if (instack[i].fname != NULL) {
- ip = &instack[i];
- break;
- }
-
- /* Give up if we don't find a source file. */
- if (ip == NULL)
- return;
-
- /* Find the other, outer source files. */
- for (i--; i >= 0; i--)
- if (instack[i].fname != NULL) {
- ip = &instack[i];
- if (first) {
- first = 0;
- notice ( "In file included from ");
- } else {
- notice (",\n from ");
- }
-
- fwrite (ip->nominal_fname, sizeof ip->nominal_fname[0],
- ip->nominal_fname_len, stderr);
- fprintf (stderr, ":%d", ip->lineno);
- }
- if (! first)
- fprintf (stderr, ":\n");
-
- /* Record we have printed the status as of this time. */
- last_error_tick = input_file_stack_tick;
-}
-\f
-/* Return the line at which an error occurred.
- The error is not necessarily associated with the current spot
- in the input stack, so LINE says where. LINE will have been
- copied from ip->lineno for the current input level.
- If the current level is for a file, we return LINE.
- But if the current level is not for a file, LINE is meaningless.
- In that case, we return the lineno of the innermost file. */
-
-static int
-line_for_error (line)
- int line;
-{
- int i;
- int line1 = line;
-
- for (i = indepth; i >= 0; ) {
- if (instack[i].fname != 0)
- return line1;
- i--;
- if (i < 0)
- return 0;
- line1 = instack[i].lineno;
- }
- abort ();
- /*NOTREACHED*/
- return 0;
-}
-
-/*
- * If OBUF doesn't have NEEDED bytes after OPTR, make it bigger.
- *
- * As things stand, nothing is ever placed in the output buffer to be
- * removed again except when it's KNOWN to be part of an identifier,
- * so flushing and moving down everything left, instead of expanding,
- * should work ok.
- */
-
-/* You might think void was cleaner for the return type,
- but that would get type mismatch in check_expand in strict ANSI. */
-
-static int
-grow_outbuf (obuf, needed)
- register FILE_BUF *obuf;
- register int needed;
-{
- register U_CHAR *p;
- int minsize;
-
- if (obuf->length - (obuf->bufp - obuf->buf) > needed)
- return 0;
-
- /* Make it at least twice as big as it is now. */
- obuf->length *= 2;
- /* Make it have at least 150% of the free space we will need. */
- minsize = (3 * needed) / 2 + (obuf->bufp - obuf->buf);
- if (minsize > obuf->length)
- obuf->length = minsize;
-
- p = (U_CHAR *) xrealloc (obuf->buf, obuf->length);
-
- obuf->bufp = p + (obuf->bufp - obuf->buf);
- obuf->buf = p;
-
- return 0;
-}
-\f
-/* Symbol table for macro names and special symbols */
-
-/*
- * install a name in the main hash table, even if it is already there.
- * name stops with first non alphanumeric, except leading '#'.
- * caller must check against redefinition if that is desired.
- * delete_macro () removes things installed by install () in fifo order.
- * this is important because of the `defined' special symbol used
- * in #if, and also if pushdef/popdef directives are ever implemented.
- *
- * If LEN is >= 0, it is the length of the name.
- * Otherwise, compute the length by scanning the entire name.
- *
- * If HASH is >= 0, it is the precomputed hash code.
- * Otherwise, compute the hash code.
- */
-
-static HASHNODE *
-install (name, len, type, value, hash)
- const U_CHAR *name;
- int len;
- enum node_type type;
- const char *value;
- int hash;
-{
- register HASHNODE *hp;
- register int i, bucket;
- register U_CHAR *p;
- register const U_CHAR *q;
-
- if (len < 0) {
- q = name;
- while (is_idchar[*q])
- q++;
- len = q - name;
- }
-
- if (hash < 0)
- hash = hashf (name, len, HASHSIZE);
-
- i = sizeof (HASHNODE) + len + 1;
- hp = (HASHNODE *) xmalloc (i);
- bucket = hash;
- hp->bucket_hdr = &hashtab[bucket];
- hp->next = hashtab[bucket];
- hashtab[bucket] = hp;
- hp->prev = NULL;
- if (hp->next != NULL)
- hp->next->prev = hp;
- hp->type = type;
- hp->length = len;
- hp->value.cpval = value;
- hp->name = ((U_CHAR *) hp) + sizeof (HASHNODE);
- p = hp->name;
- q = name;
- for (i = 0; i < len; i++)
- *p++ = *q++;
- hp->name[len] = 0;
- return hp;
-}
-
-/*
- * find the most recent hash node for name "name" (ending with first
- * non-identifier char) installed by install
- *
- * If LEN is >= 0, it is the length of the name.
- * Otherwise, compute the length by scanning the entire name.
- *
- * If HASH is >= 0, it is the precomputed hash code.
- * Otherwise, compute the hash code.
- */
-
-HASHNODE *
-lookup (name, len, hash)
- const U_CHAR *name;
- int len;
- int hash;
-{
- register const U_CHAR *bp;
- register HASHNODE *bucket;
-
- if (len < 0) {
- for (bp = name; is_idchar[*bp]; bp++) ;
- len = bp - name;
- }
-
- if (hash < 0)
- hash = hashf (name, len, HASHSIZE);
-
- bucket = hashtab[hash];
- while (bucket) {
- if (bucket->length == len && bcmp (bucket->name, name, len) == 0)
- return bucket;
- bucket = bucket->next;
- }
- return NULL;
-}
-
-/*
- * Delete a hash node. Some weirdness to free junk from macros.
- * More such weirdness will have to be added if you define more hash
- * types that need it.
- */
-
-/* Note that the DEFINITION of a macro is removed from the hash table
- but its storage is not freed. This would be a storage leak
- except that it is not reasonable to keep undefining and redefining
- large numbers of macros many times.
- In any case, this is necessary, because a macro can be #undef'd
- in the middle of reading the arguments to a call to it.
- If #undef freed the DEFINITION, that would crash. */
-
-static void
-delete_macro (hp)
- HASHNODE *hp;
-{
-
- if (hp->prev != NULL)
- hp->prev->next = hp->next;
- if (hp->next != NULL)
- hp->next->prev = hp->prev;
-
- /* Make sure that the bucket chain header that the deleted guy was
- on points to the right thing afterwards. */
- if (hp == *hp->bucket_hdr)
- *hp->bucket_hdr = hp->next;
-
-#if 0
- if (hp->type == T_MACRO) {
- DEFINITION *d = hp->value.defn;
- struct reflist *ap, *nextap;
-
- for (ap = d->pattern; ap != NULL; ap = nextap) {
- nextap = ap->next;
- free (ap);
- }
- free (d);
- }
-#endif
- free (hp);
-}
-
-/*
- * return hash function on name. must be compatible with the one
- * computed a step at a time, elsewhere
- */
-
-static int
-hashf (name, len, hashsize)
- register const U_CHAR *name;
- register int len;
- int hashsize;
-{
- register int r = 0;
-
- while (len--)
- r = HASHSTEP (r, *name++);
-
- return MAKE_POS (r) % hashsize;
-}
-\f
-
-/* Dump the definition of a single macro HP to OF. */
-
-static void
-dump_single_macro (hp, of)
- register HASHNODE *hp;
- FILE *of;
-{
- register DEFINITION *defn = hp->value.defn;
- struct reflist *ap;
- int offset;
- int concat;
-
-
- /* Print the definition of the macro HP. */
-
- fprintf (of, "#define %s", hp->name);
-
- if (defn->nargs >= 0) {
- int i;
-
- fprintf (of, "(");
- for (i = 0; i < defn->nargs; i++) {
- dump_arg_n (defn, i, of);
- if (i + 1 < defn->nargs)
- fprintf (of, ", ");
- }
- fprintf (of, ")");
- }
-
- fprintf (of, " ");
-
- offset = 0;
- concat = 0;
- for (ap = defn->pattern; ap != NULL; ap = ap->next) {
- dump_defn_1 (defn->expansion, offset, ap->nchars, of);
- offset += ap->nchars;
- if (!traditional) {
- if (ap->nchars != 0)
- concat = 0;
- if (ap->stringify) {
- switch (ap->stringify) {
- case SHARP_TOKEN: fprintf (of, "#"); break;
- case WHITE_SHARP_TOKEN: fprintf (of, "# "); break;
- case PERCENT_COLON_TOKEN: fprintf (of, "%%:"); break;
- case WHITE_PERCENT_COLON_TOKEN: fprintf (of, "%%: "); break;
- default: abort ();
- }
- }
- if (ap->raw_before != 0) {
- if (concat) {
- switch (ap->raw_before) {
- case WHITE_SHARP_TOKEN:
- case WHITE_PERCENT_COLON_TOKEN:
- fprintf (of, " ");
- break;
- default:
- break;
- }
- } else {
- switch (ap->raw_before) {
- case SHARP_TOKEN: fprintf (of, "##"); break;
- case WHITE_SHARP_TOKEN: fprintf (of, "## "); break;
- case PERCENT_COLON_TOKEN: fprintf (of, "%%:%%:"); break;
- case WHITE_PERCENT_COLON_TOKEN: fprintf (of, "%%:%%: "); break;
- default: abort ();
- }
- }
- }
- concat = 0;
- }
- dump_arg_n (defn, ap->argno, of);
- if (!traditional && ap->raw_after != 0) {
- switch (ap->raw_after) {
- case SHARP_TOKEN: fprintf (of, "##"); break;
- case WHITE_SHARP_TOKEN: fprintf (of, " ##"); break;
- case PERCENT_COLON_TOKEN: fprintf (of, "%%:%%:"); break;
- case WHITE_PERCENT_COLON_TOKEN: fprintf (of, " %%:%%:"); break;
- default: abort ();
- }
- concat = 1;
- }
- }
- dump_defn_1 (defn->expansion, offset, defn->length - offset, of);
- fprintf (of, "\n");
-}
-
-/* Dump all macro definitions as #defines to stdout. */
-
-static void
-dump_all_macros ()
-{
- int bucket;
-
- for (bucket = 0; bucket < HASHSIZE; bucket++) {
- register HASHNODE *hp;
-
- for (hp = hashtab[bucket]; hp; hp= hp->next) {
- if (hp->type == T_MACRO)
- dump_single_macro (hp, stdout);
- }
- }
-}
-
-/* Output to OF a substring of a macro definition.
- BASE is the beginning of the definition.
- Output characters START thru LENGTH.
- Unless traditional, discard newlines outside of strings, thus
- converting funny-space markers to ordinary spaces. */
-
-static void
-dump_defn_1 (base, start, length, of)
- const U_CHAR *base;
- int start;
- int length;
- FILE *of;
-{
- const U_CHAR *p = base + start;
- const U_CHAR *limit = base + start + length;
-
- if (traditional)
- fwrite (p, sizeof (*p), length, of);
- else {
- while (p < limit) {
- if (*p == '\"' || *p =='\'') {
- const U_CHAR *p1 = skip_quoted_string (p, limit, 0, NULL_PTR,
- NULL_PTR, NULL_PTR);
- fwrite (p, sizeof (*p), p1 - p, of);
- p = p1;
- } else {
- if (*p != '\n')
- putc (*p, of);
- p++;
- }
- }
- }
-}
-
-/* Print the name of argument number ARGNUM of macro definition DEFN
- to OF.
- Recall that DEFN->args.argnames contains all the arg names
- concatenated in reverse order with comma-space in between. */
-
-static void
-dump_arg_n (defn, argnum, of)
- DEFINITION *defn;
- int argnum;
- FILE *of;
-{
- register U_CHAR *p = defn->args.argnames;
- while (argnum + 1 < defn->nargs) {
- p = (U_CHAR *) index ((char *) p, ' ') + 1;
- argnum++;
- }
-
- while (*p && *p != ',') {
- putc (*p, of);
- p++;
- }
-}
-\f
-/* Initialize syntactic classifications of characters. */
-
-static void
-initialize_char_syntax ()
-{
- register int i;
-
- /*
- * Set up is_idchar and is_idstart tables. These should be
- * faster than saying (is_alpha (c) || c == '_'), etc.
- * Set up these things before calling any routines tthat
- * refer to them.
- */
- for (i = 'a'; i <= 'z'; i++) {
- /* SKIP EBCIDIC holes, char must be a valid low case char */
- if (ISLOWER(i)) {
- is_idchar[TOUPPER(i)] = 1;
- is_idchar[i] = 1;
- is_idstart[TOUPPER(i)] = 1;
- is_idstart[i] = 1;
- }
- }
- for (i = '0'; i <= '9'; i++)
- is_idchar[i] = 1;
- is_idchar['_'] = 1;
- is_idstart['_'] = 1;
- is_idchar['$'] = 1;
- is_idstart['$'] = 1;
-
- /* horizontal space table */
- is_hor_space[' '] = 1;
- is_hor_space['\t'] = 1;
- is_hor_space['\v'] = 1;
- is_hor_space['\f'] = 1;
- is_hor_space['\r'] = 1;
-
- is_space[' '] = 1;
- is_space['\t'] = 1;
- is_space['\v'] = 1;
- is_space['\f'] = 1;
- is_space['\n'] = 1;
- is_space['\r'] = 1;
-}
-
-/* Initialize the built-in macros. */
-
-static void
-initialize_builtins (inp, outp)
- FILE_BUF *inp;
- FILE_BUF *outp;
-{
- install ((const U_CHAR *) "__LINE__", -1, T_SPECLINE, NULL_PTR, -1);
- install ((const U_CHAR *) "__DATE__", -1, T_DATE, NULL_PTR, -1);
- install ((const U_CHAR *) "__FILE__", -1, T_FILE, NULL_PTR, -1);
- install ((const U_CHAR *) "__BASE_FILE__", -1, T_BASE_FILE, NULL_PTR, -1);
- install ((const U_CHAR *) "__INCLUDE_LEVEL__", -1, T_INCLUDE_LEVEL, NULL_PTR, -1);
- install ((const U_CHAR *) "__VERSION__", -1, T_VERSION, NULL_PTR, -1);
-#ifndef NO_BUILTIN_SIZE_TYPE
- install ((const U_CHAR *) "__SIZE_TYPE__", -1, T_SIZE_TYPE, NULL_PTR, -1);
-#endif
-#ifndef NO_BUILTIN_PTRDIFF_TYPE
- install ((const U_CHAR *) "__PTRDIFF_TYPE__ ", -1, T_PTRDIFF_TYPE, NULL_PTR, -1);
-#endif
-#ifndef NO_BUILTIN_WCHAR_TYPE
- install ((const U_CHAR *) "__WCHAR_TYPE__", -1, T_WCHAR_TYPE, NULL_PTR, -1);
-#endif
- install ((const U_CHAR *) "__USER_LABEL_PREFIX__", -1, T_USER_LABEL_PREFIX_TYPE,
- NULL_PTR, -1);
- install ((const U_CHAR *) "__REGISTER_PREFIX__", -1, T_REGISTER_PREFIX_TYPE,
- NULL_PTR, -1);
- install ((const U_CHAR *) "__IMMEDIATE_PREFIX__", -1, T_IMMEDIATE_PREFIX_TYPE,
- NULL_PTR, -1);
- install ((const U_CHAR *) "__TIME__", -1, T_TIME, NULL_PTR, -1);
- if (!traditional) {
- install ((const U_CHAR *) "__STDC__", -1, T_CONST, "1", -1);
- install ((const U_CHAR *) "__STDC_VERSION__", -1, T_CONST, "199409L", -1);
- }
-/* This is supplied using a -D by the compiler driver
- so that it is present only when truly compiling with GNU C. */
-/* install ((U_CHAR *) "__GNUC__", -1, T_CONST, "2", -1); */
- install ((const U_CHAR *) "__HAVE_BUILTIN_SETJMP__", -1, T_CONST, "1", -1);
-
- if (debug_output)
- {
- char directive[2048];
- U_CHAR *udirective = (U_CHAR *) directive;
- register struct directive *dp = &directive_table[0];
- struct tm *timebuf = timestamp ();
-
- sprintf (directive, " __BASE_FILE__ \"%s\"\n",
- instack[0].nominal_fname);
- output_line_directive (inp, outp, 0, same_file);
- pass_thru_directive (udirective, &udirective[strlen (directive)],
- outp, dp);
-
- sprintf (directive, " __VERSION__ \"%s\"\n", version_string);
- output_line_directive (inp, outp, 0, same_file);
- pass_thru_directive (udirective, &udirective[strlen (directive)],
- outp, dp);
-
-#ifndef NO_BUILTIN_SIZE_TYPE
- sprintf (directive, " __SIZE_TYPE__ %s\n", SIZE_TYPE);
- output_line_directive (inp, outp, 0, same_file);
- pass_thru_directive (udirective, &udirective[strlen (directive)],
- outp, dp);
-#endif
-
-#ifndef NO_BUILTIN_PTRDIFF_TYPE
- sprintf (directive, " __PTRDIFF_TYPE__ %s\n", PTRDIFF_TYPE);
- output_line_directive (inp, outp, 0, same_file);
- pass_thru_directive (udirective, &udirective[strlen (directive)],
- outp, dp);
-#endif
-
-#ifndef NO_BUILTIN_WCHAR_TYPE
- sprintf (directive, " __WCHAR_TYPE__ %s\n", wchar_type);
- output_line_directive (inp, outp, 0, same_file);
- pass_thru_directive (udirective, &udirective[strlen (directive)],
- outp, dp);
-#endif
-
- sprintf (directive, " __DATE__ \"%s %2d %4d\"\n",
- monthnames[timebuf->tm_mon],
- timebuf->tm_mday, timebuf->tm_year + 1900);
- output_line_directive (inp, outp, 0, same_file);
- pass_thru_directive (udirective, &udirective[strlen (directive)],
- outp, dp);
-
- sprintf (directive, " __TIME__ \"%02d:%02d:%02d\"\n",
- timebuf->tm_hour, timebuf->tm_min, timebuf->tm_sec);
- output_line_directive (inp, outp, 0, same_file);
- pass_thru_directive (udirective, &udirective[strlen (directive)],
- outp, dp);
-
- if (!traditional)
- {
- sprintf (directive, " __STDC__ 1");
- output_line_directive (inp, outp, 0, same_file);
- pass_thru_directive (udirective, &udirective[strlen (directive)],
- outp, dp);
- }
- if (objc)
- {
- sprintf (directive, " __OBJC__ 1");
- output_line_directive (inp, outp, 0, same_file);
- pass_thru_directive (udirective, &udirective[strlen (directive)],
- outp, dp);
- }
- }
-}
-\f
-/*
- * process a given definition string, for initialization
- * If STR is just an identifier, define it with value 1.
- * If STR has anything after the identifier, then it should
- * be identifier=definition.
- */
-
-static void
-make_definition (str)
- char *str;
-{
- FILE_BUF *ip;
- struct directive *kt;
- U_CHAR *buf, *p;
-
- p = buf = (U_CHAR *) str;
- if (!is_idstart[*p]) {
- error ("malformed option `-D %s'", str);
- return;
- }
- while (is_idchar[*++p])
- ;
- if (*p == '(') {
- while (is_idchar[*++p] || *p == ',' || is_hor_space[*p])
- ;
- if (*p++ != ')')
- p = (U_CHAR *) str; /* Error */
- }
- if (*p == 0) {
- buf = (U_CHAR *) alloca (p - buf + 4);
- strcpy ((char *)buf, str);
- strcat ((char *)buf, " 1");
- } else if (*p != '=') {
- error ("malformed option `-D %s'", str);
- return;
- } else {
- U_CHAR *q;
- /* Copy the entire option so we can modify it. */
- buf = (U_CHAR *) alloca (2 * strlen (str) + 1);
- strncpy ((char *) buf, str, p - (U_CHAR *) str);
- /* Change the = to a space. */
- buf[p - (U_CHAR *) str] = ' ';
- /* Scan for any backslash-newline and remove it. */
- p++;
- q = &buf[p - (U_CHAR *) str];
- while (*p) {
- if (*p == '\"' || *p == '\'') {
- int unterminated = 0;
- const U_CHAR *p1 = skip_quoted_string (p, p + strlen ((char *) p), 0,
- NULL_PTR, NULL_PTR, &unterminated);
- if (unterminated)
- return;
- while (p != p1) {
- if (*p == '\\' && p[1] == '\n')
- p += 2;
- else if (*p == '\n')
- {
- *q++ = '\\';
- *q++ = 'n';
- p++;
- }
- else
- *q++ = *p++;
- }
- } else if (*p == '\\' && p[1] == '\n')
- p += 2;
- /* Change newline chars into newline-markers. */
- else if (*p == '\n')
- {
- *q++ = '\n';
- *q++ = '\n';
- p++;
- }
- else
- *q++ = *p++;
- }
- *q = 0;
- }
-
- ip = &instack[++indepth];
- ip->nominal_fname = ip->fname = "*Initialization*";
- ip->nominal_fname_len = strlen (ip->nominal_fname);
-
- ip->buf = ip->bufp = buf;
- ip->length = strlen ((char *) buf);
- ip->lineno = 1;
- ip->macro = 0;
- ip->free_ptr = 0;
- ip->if_stack = if_stack;
- ip->system_header_p = 0;
-
- for (kt = directive_table; kt->type != T_DEFINE; kt++)
- ;
-
- /* Pass NULL instead of OP, since this is a "predefined" macro. */
- do_define (buf, buf + strlen ((char *) buf), NULL_PTR, kt);
- --indepth;
-}
-
-/* JF, this does the work for the -U option */
-
-static void
-make_undef (str, op)
- char *str;
- FILE_BUF *op;
-{
- FILE_BUF *ip;
- struct directive *kt;
-
- ip = &instack[++indepth];
- ip->nominal_fname = ip->fname = "*undef*";
- ip->nominal_fname_len = strlen (ip->nominal_fname);
-
- ip->buf = ip->bufp = (U_CHAR *) str;
- ip->length = strlen (str);
- ip->lineno = 1;
- ip->macro = 0;
- ip->free_ptr = 0;
- ip->if_stack = if_stack;
- ip->system_header_p = 0;
-
- for (kt = directive_table; kt->type != T_UNDEF; kt++)
- ;
-
- do_undef ((U_CHAR *) str, (U_CHAR *) str + strlen (str), op, kt);
- --indepth;
-}
-\f
-/* Process the string STR as if it appeared as the body of a #assert.
- OPTION is the option name for which STR was the argument. */
-
-static void
-make_assertion (option, str)
- const char *option;
- const char *str;
-{
- FILE_BUF *ip;
- struct directive *kt;
- U_CHAR *buf, *p, *q;
-
- /* Copy the entire option so we can modify it. */
- buf = (U_CHAR *) alloca (strlen (str) + 1);
- strcpy ((char *) buf, str);
- /* Scan for any backslash-newline and remove it. */
- p = q = buf;
- while (*p) {
- if (*p == '\\' && p[1] == '\n')
- p += 2;
- else
- *q++ = *p++;
- }
- *q = 0;
-
- p = buf;
- if (!is_idstart[*p]) {
- error ("malformed option `%s %s'", option, str);
- return;
- }
- while (is_idchar[*++p])
- ;
- SKIP_WHITE_SPACE (p);
- if (! (*p == 0 || *p == '(')) {
- error ("malformed option `%s %s'", option, str);
- return;
- }
-
- ip = &instack[++indepth];
- ip->nominal_fname = ip->fname = "*Initialization*";
- ip->nominal_fname_len = strlen (ip->nominal_fname);
-
- ip->buf = ip->bufp = buf;
- ip->length = strlen ((char *) buf);
- ip->lineno = 1;
- ip->macro = 0;
- ip->free_ptr = 0;
- ip->if_stack = if_stack;
- ip->system_header_p = 0;
-
- for (kt = directive_table; kt->type != T_ASSERT; kt++)
- ;
-
- /* Pass NULL as output ptr to do_define since we KNOW it never does
- any output.... */
- do_assert (buf, buf + strlen ((char *) buf) , NULL_PTR, kt);
- --indepth;
-}
-\f
-/* The previous include prefix, if any, is PREV_FILE_NAME.
- Translate any pathnames with COMPONENT.
- Allocate a new include prefix whose name is the
- simplified concatenation of PREFIX and NAME,
- with a trailing / added if needed.
- But return 0 if the include prefix should be ignored,
- e.g. because it is a duplicate of PREV_FILE_NAME. */
-
-static struct file_name_list *
-new_include_prefix (prev_file_name, component, prefix, name)
- struct file_name_list *prev_file_name;
- const char *component;
- const char *prefix;
- const char *name;
-{
- if (name == 0)
- fatal ("Directory name missing after command line option");
-
- if (*name == 0)
- /* Ignore the empty string. */
- return 0;
-
- prefix = update_path (prefix, component);
- name = update_path (name, component);
-
- {
- struct file_name_list *dir
- = ((struct file_name_list *)
- xmalloc (sizeof (struct file_name_list)
- + strlen (prefix) + strlen (name) + 2));
- size_t len;
- strcpy (dir->fname, prefix);
- strcat (dir->fname, name);
- len = simplify_filename (dir->fname);
-
- /* Convert directory name to a prefix. */
- if (len && dir->fname[len - 1] != DIR_SEPARATOR) {
- if (len == 1 && dir->fname[len - 1] == '.')
- len = 0;
- else
-#ifdef VMS
- /* must be '/', hack_vms_include_specification triggers on it. */
- dir->fname[len++] = '/';
-#else
- dir->fname[len++] = DIR_SEPARATOR;
-#endif
- dir->fname[len] = 0;
- }
-
- /* Ignore a directory whose name matches the previous one. */
- if (prev_file_name && !strcmp (prev_file_name->fname, dir->fname)) {
- /* But treat `-Idir -I- -Idir' as `-I- -Idir'. */
- if (!first_bracket_include)
- first_bracket_include = prev_file_name;
- free (dir);
- return 0;
- }
-
-#ifndef VMS
- /* VMS can't stat dir prefixes, so skip these optimizations in VMS. */
-
- /* Add a trailing "." if there is a filename. This increases the number
- of systems that can stat directories. We remove it below. */
- if (len != 0)
- {
- dir->fname[len] = '.';
- dir->fname[len + 1] = 0;
- }
-
- /* Ignore a nonexistent directory. */
- if (stat (len ? dir->fname : ".", &dir->st) != 0) {
- if (errno != ENOENT && errno != ENOTDIR)
- error_from_errno (dir->fname);
- free (dir);
- return 0;
- }
-
- if (len != 0)
- dir->fname[len] = 0;
-
- /* Ignore a directory whose identity matches the previous one. */
- if (prev_file_name
- && INO_T_EQ (prev_file_name->st.st_ino, dir->st.st_ino)
- && prev_file_name->st.st_dev == dir->st.st_dev) {
- /* But treat `-Idir -I- -Idir' as `-I- -Idir'. */
- if (!first_bracket_include)
- first_bracket_include = prev_file_name;
- free (dir);
- return 0;
- }
-#endif /* ! VMS */
-
- dir->next = 0;
- dir->c_system_include_path = 0;
- dir->got_name_map = 0;
-
- return dir;
- }
-}
-
-/* Append a chain of `struct file_name_list's
- to the end of the main include chain.
- FIRST is the beginning of the chain to append, and LAST is the end. */
-
-static void
-append_include_chain (first, last)
- struct file_name_list *first, *last;
-{
- struct file_name_list *dir;
-
- if (!first || !last)
- return;
-
- if (include == 0)
- include = first;
- else
- last_include->next = first;
-
- if (first_bracket_include == 0)
- first_bracket_include = first;
-
- for (dir = first; ; dir = dir->next) {
- int len = strlen (dir->fname) + INCLUDE_LEN_FUDGE;
- if (len > max_include_len)
- max_include_len = len;
- if (dir == last)
- break;
- }
-
- last->next = NULL;
- last_include = last;
-}
-\f
-/* Place into DST a representation of the file named SRC that is suitable
- for `make'. Do not null-terminate DST. Return its length. */
-static int
-quote_string_for_make (dst, src)
- char *dst;
- const char *src;
-{
- const char *p = src;
- int i = 0;
- for (;;)
- {
- char c = *p++;
- switch (c)
- {
- case '\0':
- case ' ':
- case '\t':
- {
- /* GNU make uses a weird quoting scheme for white space.
- A space or tab preceded by 2N+1 backslashes represents
- N backslashes followed by space; a space or tab
- preceded by 2N backslashes represents N backslashes at
- the end of a file name; and backslashes in other
- contexts should not be doubled. */
- const char *q;
- for (q = p - 1; src < q && q[-1] == '\\'; q--)
- {
- if (dst)
- dst[i] = '\\';
- i++;
- }
- }
- if (!c)
- return i;
- if (dst)
- dst[i] = '\\';
- i++;
- goto ordinary_char;
-
- case '$':
- if (dst)
- dst[i] = c;
- i++;
- /* Fall through. This can mishandle things like "$(" but
- there's no easy fix. */
- default:
- ordinary_char:
- /* This can mishandle characters in the string "\0\n%*?[\\~";
- exactly which chars are mishandled depends on the `make' version.
- We know of no portable solution for this;
- even GNU make 3.76.1 doesn't solve the problem entirely.
- (Also, '\0' is mishandled due to our calling conventions.) */
- if (dst)
- dst[i] = c;
- i++;
- break;
- }
- }
-}
-
-
-/* Add output to `deps_buffer' for the -M switch.
- STRING points to the text to be output.
- SPACER is ':' for targets, ' ' for dependencies. */
-
-static void
-deps_output (string, spacer)
- const char *string;
- int spacer;
-{
- int size = quote_string_for_make ((char *) 0, string);
-
- if (size == 0)
- return;
-
-#ifndef MAX_OUTPUT_COLUMNS
-#define MAX_OUTPUT_COLUMNS 72
-#endif
- if (MAX_OUTPUT_COLUMNS - 1 /*spacer*/ - 2 /*` \'*/ < deps_column + size
- && 1 < deps_column) {
- bcopy (" \\\n ", &deps_buffer[deps_size], 4);
- deps_size += 4;
- deps_column = 1;
- if (spacer == ' ')
- spacer = 0;
- }
-
- if (deps_size + 2 * size + 8 > deps_allocated_size) {
- deps_allocated_size = (deps_size + 2 * size + 50) * 2;
- deps_buffer = xrealloc (deps_buffer, deps_allocated_size);
- }
- if (spacer == ' ') {
- deps_buffer[deps_size++] = ' ';
- deps_column++;
- }
- quote_string_for_make (&deps_buffer[deps_size], string);
- deps_size += size;
- deps_column += size;
- if (spacer == ':') {
- deps_buffer[deps_size++] = ':';
- deps_column++;
- }
- deps_buffer[deps_size] = 0;
-}
-\f
-void
-fatal VPARAMS ((const char * msgid, ...))
-{
-#ifndef ANSI_PROTOTYPES
- const char * msgid;
-#endif
- va_list args;
-
- fprintf (stderr, "%s: ", progname);
- VA_START (args, msgid);
-
-#ifndef ANSI_PROTOTYPES
- msgid = va_arg (args, const char *);
-#endif
- vnotice (msgid, args);
- va_end (args);
- fprintf (stderr, "\n");
- exit (FATAL_EXIT_CODE);
-}
-
-/* More 'friendly' abort that prints the line and file.
- config.h can #define abort fancy_abort if you like that sort of thing. */
-
-void
-fancy_abort ()
-{
- fatal ("Internal gcc abort.");
-}
-
-static void
-perror_with_name (name)
- const char *name;
-{
- fprintf (stderr, "%s: %s: %s\n", progname, name, xstrerror (errno));
- errors++;
-}
-
-static void
-pfatal_with_name (name)
- const char *name;
-{
- perror_with_name (name);
-#ifdef VMS
- exit (vaxc$errno);
-#else
- exit (FATAL_EXIT_CODE);
-#endif
-}
-
-/* Handler for SIGPIPE. */
-
-static void
-pipe_closed (signo)
- /* If this is missing, some compilers complain. */
- int signo ATTRIBUTE_UNUSED;
-{
- fatal ("output pipe has been closed");
-}
-\f
-static void
-memory_full ()
-{
- fatal ("Memory exhausted.");
-}
-\f
-#ifdef VMS
-
-/* Under VMS we need to fix up the "include" specification filename.
-
- Rules for possible conversions
-
- fullname tried paths
-
- name name
- ./dir/name [.dir]name
- /dir/name dir:name
- /name [000000]name, name
- dir/name dir:[000000]name, dir:name, dir/name
- dir1/dir2/name dir1:[dir2]name, dir1:[000000.dir2]name
- path:/name path:[000000]name, path:name
- path:/dir/name path:[000000.dir]name, path:[dir]name
- path:dir/name path:[dir]name
- [path]:[dir]name [path.dir]name
- path/[dir]name [path.dir]name
-
- The path:/name input is constructed when expanding <> includes.
-
- return 1 if name was changed, 0 else. */
-
-static int
-hack_vms_include_specification (fullname, vaxc_include)
- char *fullname;
- int vaxc_include;
-{
- register char *basename, *unixname, *local_ptr, *first_slash;
- int f, check_filename_before_returning, must_revert;
- char Local[512];
-
- check_filename_before_returning = 0;
- must_revert = 0;
- /* See if we can find a 1st slash. If not, there's no path information. */
- first_slash = index (fullname, '/');
- if (first_slash == 0)
- return 0; /* Nothing to do!!! */
-
- /* construct device spec if none given. */
-
- if (index (fullname, ':') == 0)
- {
-
- /* If fullname has a slash, take it as device spec. */
-
- if (first_slash == fullname)
- {
- first_slash = index (fullname+1, '/'); /* 2nd slash ? */
- if (first_slash)
- *first_slash = ':'; /* make device spec */
- for (basename = fullname; *basename != 0; basename++)
- *basename = *(basename+1); /* remove leading slash */
- }
- else if ((first_slash[-1] != '.') /* keep ':/', './' */
- && (first_slash[-1] != ':')
- && (first_slash[-1] != ']')) /* or a vms path */
- {
- *first_slash = ':';
- }
- else if ((first_slash[1] == '[') /* skip './' in './[dir' */
- && (first_slash[-1] == '.'))
- fullname += 2;
- }
-
- /* Get part after first ':' (basename[-1] == ':')
- or last '/' (basename[-1] == '/'). */
-
- basename = base_name (fullname);
-
- /*
- * Check if we have a vax-c style '#include filename'
- * and add the missing .h
- */
-
- if (vaxc_include && !index (basename,'.'))
- strcat (basename, ".h");
-
- local_ptr = Local; /* initialize */
-
- /* We are trying to do a number of things here. First of all, we are
- trying to hammer the filenames into a standard format, such that later
- processing can handle them.
-
- If the file name contains something like [dir.], then it recognizes this
- as a root, and strips the ".]". Later processing will add whatever is
- needed to get things working properly.
-
- If no device is specified, then the first directory name is taken to be
- a device name (or a rooted logical). */
-
- /* Point to the UNIX filename part (which needs to be fixed!)
- but skip vms path information.
- [basename != fullname since first_slash != 0]. */
-
- if ((basename[-1] == ':') /* vms path spec. */
- || (basename[-1] == ']')
- || (basename[-1] == '>'))
- unixname = basename;
- else
- unixname = fullname;
-
- if (*unixname == '/')
- unixname++;
-
- /* If the directory spec is not rooted, we can just copy
- the UNIX filename part and we are done. */
-
- if (((basename - fullname) > 1)
- && ( (basename[-1] == ']')
- || (basename[-1] == '>')))
- {
- if (basename[-2] != '.')
- {
-
- /* The VMS part ends in a `]', and the preceding character is not a `.'.
- -> PATH]:/name (basename = '/name', unixname = 'name')
- We strip the `]', and then splice the two parts of the name in the
- usual way. Given the default locations for include files in cccp.c,
- we will only use this code if the user specifies alternate locations
- with the /include (-I) switch on the command line. */
-
- basename -= 1; /* Strip "]" */
- unixname--; /* backspace */
- }
- else
- {
-
- /* The VMS part has a ".]" at the end, and this will not do. Later
- processing will add a second directory spec, and this would be a syntax
- error. Thus we strip the ".]", and thus merge the directory specs.
- We also backspace unixname, so that it points to a '/'. This inhibits the
- generation of the 000000 root directory spec (which does not belong here
- in this case). */
-
- basename -= 2; /* Strip ".]" */
- unixname--; /* backspace */
- }
- }
-
- else
-
- {
-
- /* We drop in here if there is no VMS style directory specification yet.
- If there is no device specification either, we make the first dir a
- device and try that. If we do not do this, then we will be essentially
- searching the users default directory (as if they did a #include "asdf.h").
-
- Then all we need to do is to push a '[' into the output string. Later
- processing will fill this in, and close the bracket. */
-
- if ((unixname != fullname) /* vms path spec found. */
- && (basename[-1] != ':'))
- *local_ptr++ = ':'; /* dev not in spec. take first dir */
-
- *local_ptr++ = '['; /* Open the directory specification */
- }
-
- if (unixname == fullname) /* no vms dir spec. */
- {
- must_revert = 1;
- if ((first_slash != 0) /* unix dir spec. */
- && (*unixname != '/') /* not beginning with '/' */
- && (*unixname != '.')) /* or './' or '../' */
- *local_ptr++ = '.'; /* dir is local ! */
- }
-
- /* at this point we assume that we have the device spec, and (at least
- the opening "[" for a directory specification. We may have directories
- specified already.
-
- If there are no other slashes then the filename will be
- in the "root" directory. Otherwise, we need to add
- directory specifications. */
-
- if (index (unixname, '/') == 0)
- {
- /* if no directories specified yet and none are following. */
- if (local_ptr[-1] == '[')
- {
- /* Just add "000000]" as the directory string */
- strcpy (local_ptr, "000000]");
- local_ptr += strlen (local_ptr);
- check_filename_before_returning = 1; /* we might need to fool with this later */
- }
- }
- else
- {
-
- /* As long as there are still subdirectories to add, do them. */
- while (index (unixname, '/') != 0)
- {
- /* If this token is "." we can ignore it
- if it's not at the beginning of a path. */
- if ((unixname[0] == '.') && (unixname[1] == '/'))
- {
- /* remove it at beginning of path. */
- if ( ((unixname == fullname) /* no device spec */
- && (fullname+2 != basename)) /* starts with ./ */
- /* or */
- || ((basename[-1] == ':') /* device spec */
- && (unixname-1 == basename))) /* and ./ afterwards */
- *local_ptr++ = '.'; /* make '[.' start of path. */
- unixname += 2;
- continue;
- }
-
- /* Add a subdirectory spec. Do not duplicate "." */
- if ( local_ptr[-1] != '.'
- && local_ptr[-1] != '['
- && local_ptr[-1] != '<')
- *local_ptr++ = '.';
-
- /* If this is ".." then the spec becomes "-" */
- if ( (unixname[0] == '.')
- && (unixname[1] == '.')
- && (unixname[2] == '/'))
- {
- /* Add "-" and skip the ".." */
- if ((local_ptr[-1] == '.')
- && (local_ptr[-2] == '['))
- local_ptr--; /* prevent [.- */
- *local_ptr++ = '-';
- unixname += 3;
- continue;
- }
-
- /* Copy the subdirectory */
- while (*unixname != '/')
- *local_ptr++= *unixname++;
-
- unixname++; /* Skip the "/" */
- }
-
- /* Close the directory specification */
- if (local_ptr[-1] == '.') /* no trailing periods */
- local_ptr--;
-
- if (local_ptr[-1] == '[') /* no dir needed */
- local_ptr--;
- else
- *local_ptr++ = ']';
- }
-
- /* Now add the filename. */
-
- while (*unixname)
- *local_ptr++ = *unixname++;
- *local_ptr = 0;
-
- /* Now append it to the original VMS spec. */
-
- strcpy ((must_revert==1)?fullname:basename, Local);
-
- /* If we put a [000000] in the filename, try to open it first. If this fails,
- remove the [000000], and return that name. This provides flexibility
- to the user in that they can use both rooted and non-rooted logical names
- to point to the location of the file. */
-
- if (check_filename_before_returning)
- {
- f = open (fullname, O_RDONLY, 0666);
- if (f >= 0)
- {
- /* The file name is OK as it is, so return it as is. */
- close (f);
- return 1;
- }
-
- /* The filename did not work. Try to remove the [000000] from the name,
- and return it. */
-
- basename = index (fullname, '[');
- local_ptr = index (fullname, ']') + 1;
- strcpy (basename, local_ptr); /* this gets rid of it */
-
- }
-
- return 1;
-}
-#endif /* VMS */
-\f
-#ifdef VMS
-
-/* The following wrapper functions supply additional arguments to the VMS
- I/O routines to optimize performance with file handling. The arguments
- are:
- "mbc=16" - Set multi-block count to 16 (use a 8192 byte buffer).
- "deq=64" - When extending the file, extend it in chunks of 32Kbytes.
- "fop=tef"- Truncate unused portions of file when closing file.
- "shr=nil"- Disallow file sharing while file is open. */
-
-static FILE *
-VMS_freopen (fname, type, oldfile)
- char *fname;
- char *type;
- FILE *oldfile;
-{
-#undef freopen /* Get back the real freopen routine. */
- if (strcmp (type, "w") == 0)
- return freopen (fname, type, oldfile,
- "mbc=16", "deq=64", "fop=tef", "shr=nil");
- return freopen (fname, type, oldfile, "mbc=16");
-}
-
-static FILE *
-VMS_fopen (fname, type)
- char *fname;
- char *type;
-{
-#undef fopen /* Get back the real fopen routine. */
- /* The gcc-vms-1.42 distribution's header files prototype fopen with two
- fixed arguments, which matches ANSI's specification but not VAXCRTL's
- pre-ANSI implementation. This hack circumvents the mismatch problem. */
- FILE *(*vmslib_fopen)() = (FILE *(*)()) fopen;
-
- if (*type == 'w')
- return (*vmslib_fopen) (fname, type, "mbc=32",
- "deq=64", "fop=tef", "shr=nil");
- else
- return (*vmslib_fopen) (fname, type, "mbc=32");
-}
-
-static int
-VMS_open (fname, flags, prot)
- char *fname;
- int flags;
- int prot;
-{
-#undef open /* Get back the real open routine. */
- return open (fname, flags, prot, "mbc=16", "deq=64", "fop=tef");
-}
-\f
-/* more VMS hackery */
-#include <fab.h>
-#include <nam.h>
-
-extern unsigned long SYS$PARSE(), SYS$SEARCH();
-
-/* Work around another library bug. If a file is located via a searchlist,
- and if the device it's on is not the same device as the one specified
- in the first element of that searchlist, then both stat() and fstat()
- will fail to return info about it. `errno' will be set to EVMSERR, and
- `vaxc$errno' will be set to SS$_NORMAL due yet another bug in stat()!
- We can get around this by fully parsing the filename and then passing
- that absolute name to stat().
-
- Without this fix, we can end up failing to find header files, which is
- bad enough, but then compounding the problem by reporting the reason for
- failure as "normal successful completion." */
-
-#undef fstat /* Get back to the library version. */
-
-static int
-VMS_fstat (fd, statbuf)
- int fd;
- struct stat *statbuf;
-{
- int result = fstat (fd, statbuf);
-
- if (result < 0)
- {
- FILE *fp;
- char nambuf[NAM$C_MAXRSS+1];
-
- if ((fp = fdopen (fd, "r")) != 0 && fgetname (fp, nambuf) != 0)
- result = VMS_stat (nambuf, statbuf);
- /* No fclose(fp) here; that would close(fd) as well. */
- }
-
- return result;
-}
-
-static int
-VMS_stat (name, statbuf)
- const char *name;
- struct stat *statbuf;
-{
- int result = stat (name, statbuf);
-
- if (result < 0)
- {
- struct FAB fab;
- struct NAM nam;
- char exp_nam[NAM$C_MAXRSS+1], /* expanded name buffer for SYS$PARSE */
- res_nam[NAM$C_MAXRSS+1]; /* resultant name buffer for SYS$SEARCH */
-
- fab = cc$rms_fab;
- fab.fab$l_fna = (char *) name;
- fab.fab$b_fns = (unsigned char) strlen (name);
- fab.fab$l_nam = (void *) &nam;
- nam = cc$rms_nam;
- nam.nam$l_esa = exp_nam, nam.nam$b_ess = sizeof exp_nam - 1;
- nam.nam$l_rsa = res_nam, nam.nam$b_rss = sizeof res_nam - 1;
- nam.nam$b_nop = NAM$M_PWD | NAM$M_NOCONCEAL;
- if (SYS$PARSE (&fab) & 1)
- {
- if (SYS$SEARCH (&fab) & 1)
- {
- res_nam[nam.nam$b_rsl] = '\0';
- result = stat (res_nam, statbuf);
- }
- /* Clean up searchlist context cached by the system. */
- nam.nam$b_nop = NAM$M_SYNCHK;
- fab.fab$l_fna = 0, fab.fab$b_fns = 0;
- (void) SYS$PARSE (&fab);
- }
- }
-
- return result;
-}
-
-static size_t
-VMS_fwrite (ptr, size, nitems, stream)
- void const *ptr;
- size_t size;
- size_t nitems;
- FILE *stream;
-{
- /* VMS fwrite has undesirable results
- if STREAM happens to be a record oriented file.
- Work around this problem by writing each character individually. */
- char const *p = ptr;
- size_t bytes = size * nitems;
- char *lim = p + bytes;
-
- while (p < lim)
- if (putc (*p++, stream) == EOF)
- return 0;
-
- return bytes;
-}
-#endif /* VMS */
+++ /dev/null
-
-/* A Bison parser, made from cexp.y
- by GNU Bison version 1.28 */
-
-#define YYBISON 1 /* Identify Bison output. */
-
-#define INT 257
-#define CHAR 258
-#define NAME 259
-#define ERROR 260
-#define OR 261
-#define AND 262
-#define EQUAL 263
-#define NOTEQUAL 264
-#define LEQ 265
-#define GEQ 266
-#define LSH 267
-#define RSH 268
-#define UNARY 269
-
-#line 28 "cexp.y"
-
-#include "config.h"
-
-#include "system.h"
-#include "intl.h"
-#include <setjmp.h>
-/* #define YYDEBUG 1 */
-
-#ifdef MULTIBYTE_CHARS
-#include "mbchar.h"
-#include <locale.h>
-#endif /* MULTIBYTE_CHARS */
-
-typedef unsigned char U_CHAR;
-
-/* This is used for communicating lists of keywords with cccp.c. */
-struct arglist {
- struct arglist *next;
- U_CHAR *name;
- int length;
- int argno;
-};
-
-HOST_WIDEST_INT parse_c_expression PARAMS ((char *, int));
-
-static int yylex PARAMS ((void));
-static void yyerror PARAMS ((const char *, ...))
- ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
-static HOST_WIDEST_INT expression_value;
-#ifdef TEST_EXP_READER
-static int expression_signedp;
-#endif
-
-static jmp_buf parse_return_error;
-
-/* Nonzero means count most punctuation as part of a name. */
-static int keyword_parsing = 0;
-
-/* Nonzero means do not evaluate this expression.
- This is a count, since unevaluated expressions can nest. */
-static int skip_evaluation;
-
-/* Nonzero means warn if undefined identifiers are evaluated. */
-static int warn_undef;
-
-/* some external tables of character types */
-extern unsigned char is_idstart[], is_idchar[], is_space[];
-
-/* Flag for -pedantic. */
-extern int pedantic;
-
-/* Flag for -traditional. */
-extern int traditional;
-
-/* Flag for -lang-c89. */
-extern int c89;
-
-#ifndef CHAR_TYPE_SIZE
-#define CHAR_TYPE_SIZE BITS_PER_UNIT
-#endif
-
-#ifndef INT_TYPE_SIZE
-#define INT_TYPE_SIZE BITS_PER_WORD
-#endif
-
-#ifndef LONG_TYPE_SIZE
-#define LONG_TYPE_SIZE BITS_PER_WORD
-#endif
-
-#ifndef WCHAR_TYPE_SIZE
-#define WCHAR_TYPE_SIZE INT_TYPE_SIZE
-#endif
-
-#ifndef MAX_CHAR_TYPE_SIZE
-#define MAX_CHAR_TYPE_SIZE CHAR_TYPE_SIZE
-#endif
-
-#ifndef MAX_INT_TYPE_SIZE
-#define MAX_INT_TYPE_SIZE INT_TYPE_SIZE
-#endif
-
-#ifndef MAX_LONG_TYPE_SIZE
-#define MAX_LONG_TYPE_SIZE LONG_TYPE_SIZE
-#endif
-
-#ifndef MAX_WCHAR_TYPE_SIZE
-#define MAX_WCHAR_TYPE_SIZE WCHAR_TYPE_SIZE
-#endif
-
-#define MAX_CHAR_TYPE_MASK (MAX_CHAR_TYPE_SIZE < HOST_BITS_PER_WIDEST_INT \
- ? (~ (~ (HOST_WIDEST_INT) 0 << MAX_CHAR_TYPE_SIZE)) \
- : ~ (HOST_WIDEST_INT) 0)
-
-#define MAX_WCHAR_TYPE_MASK (MAX_WCHAR_TYPE_SIZE < HOST_BITS_PER_WIDEST_INT \
- ? ~ (~ (HOST_WIDEST_INT) 0 << MAX_WCHAR_TYPE_SIZE) \
- : ~ (HOST_WIDEST_INT) 0)
-
-/* Suppose A1 + B1 = SUM1, using 2's complement arithmetic ignoring overflow.
- Suppose A, B and SUM have the same respective signs as A1, B1, and SUM1.
- Suppose SIGNEDP is negative if the result is signed, zero if unsigned.
- Then this yields nonzero if overflow occurred during the addition.
- Overflow occurs if A and B have the same sign, but A and SUM differ in sign,
- and SIGNEDP is negative.
- Use `^' to test whether signs differ, and `< 0' to isolate the sign. */
-#define overflow_sum_sign(a, b, sum, signedp) \
- ((~((a) ^ (b)) & ((a) ^ (sum)) & (signedp)) < 0)
-
-struct constant;
-
-HOST_WIDEST_INT parse_escape PARAMS ((char **, HOST_WIDEST_INT));
-int check_assertion PARAMS ((U_CHAR *, int, int, struct arglist *));
-struct hashnode *lookup PARAMS ((U_CHAR *, int, int));
-void error PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1;
-void verror PARAMS ((const char *, va_list));
-void pedwarn PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1;
-void warning PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1;
-
-static int parse_number PARAMS ((int));
-static HOST_WIDEST_INT left_shift PARAMS ((struct constant *, unsigned HOST_WIDEST_INT));
-static HOST_WIDEST_INT right_shift PARAMS ((struct constant *, unsigned HOST_WIDEST_INT));
-static void integer_overflow PARAMS ((void));
-
-/* `signedp' values */
-#define SIGNED (~0)
-#define UNSIGNED 0
-
-#line 155 "cexp.y"
-typedef union {
- struct constant {HOST_WIDEST_INT value; int signedp;} integer;
- struct name {U_CHAR *address; int length;} name;
- struct arglist *keywords;
-} YYSTYPE;
-#include <stdio.h>
-
-#ifndef __cplusplus
-#ifndef __STDC__
-#define const
-#endif
-#endif
-
-
-
-#define YYFINAL 77
-#define YYFLAG -32768
-#define YYNTBASE 34
-
-#define YYTRANSLATE(x) ((unsigned)(x) <= 269 ? yytranslate[x] : 43)
-
-static const char yytranslate[] = { 0,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 29, 2, 31, 2, 27, 14, 2, 32,
- 33, 25, 23, 9, 24, 2, 26, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 8, 2, 17,
- 2, 18, 7, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 13, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 12, 2, 30, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 1, 3, 4, 5, 6,
- 10, 11, 15, 16, 19, 20, 21, 22, 28
-};
-
-#if YYDEBUG != 0
-static const short yyprhs[] = { 0,
- 0, 2, 4, 8, 11, 14, 17, 20, 23, 24,
- 31, 35, 39, 43, 47, 51, 55, 59, 63, 67,
- 71, 75, 79, 83, 87, 91, 95, 99, 100, 105,
- 106, 111, 112, 113, 121, 123, 125, 127, 128, 133
-};
-
-static const short yyrhs[] = { 35,
- 0, 36, 0, 35, 9, 36, 0, 24, 36, 0,
- 29, 36, 0, 23, 36, 0, 30, 36, 0, 31,
- 5, 0, 0, 31, 5, 37, 32, 42, 33, 0,
- 32, 35, 33, 0, 36, 25, 36, 0, 36, 26,
- 36, 0, 36, 27, 36, 0, 36, 23, 36, 0,
- 36, 24, 36, 0, 36, 21, 36, 0, 36, 22,
- 36, 0, 36, 15, 36, 0, 36, 16, 36, 0,
- 36, 19, 36, 0, 36, 20, 36, 0, 36, 17,
- 36, 0, 36, 18, 36, 0, 36, 14, 36, 0,
- 36, 13, 36, 0, 36, 12, 36, 0, 0, 36,
- 11, 38, 36, 0, 0, 36, 10, 39, 36, 0,
- 0, 0, 36, 7, 40, 36, 8, 41, 36, 0,
- 3, 0, 4, 0, 5, 0, 0, 32, 42, 33,
- 42, 0, 5, 42, 0
-};
-
-#endif
-
-#if YYDEBUG != 0
-static const short yyrline[] = { 0,
- 185, 195, 196, 203, 208, 211, 213, 216, 220, 222,
- 227, 232, 245, 262, 275, 281, 287, 293, 299, 302,
- 305, 312, 319, 326, 333, 336, 339, 342, 345, 348,
- 351, 354, 356, 359, 362, 364, 366, 374, 376, 389
-};
-#endif
-
-
-#if YYDEBUG != 0 || defined (YYERROR_VERBOSE)
-
-static const char * const yytname[] = { "$","error","$undefined.","INT","CHAR",
-"NAME","ERROR","'?'","':'","','","OR","AND","'|'","'^'","'&'","EQUAL","NOTEQUAL",
-"'<'","'>'","LEQ","GEQ","LSH","RSH","'+'","'-'","'*'","'/'","'%'","UNARY","'!'",
-"'~'","'#'","'('","')'","start","exp1","exp","@1","@2","@3","@4","@5","keywords", NULL
-};
-#endif
-
-static const short yyr1[] = { 0,
- 34, 35, 35, 36, 36, 36, 36, 36, 37, 36,
- 36, 36, 36, 36, 36, 36, 36, 36, 36, 36,
- 36, 36, 36, 36, 36, 36, 36, 38, 36, 39,
- 36, 40, 41, 36, 36, 36, 36, 42, 42, 42
-};
-
-static const short yyr2[] = { 0,
- 1, 1, 3, 2, 2, 2, 2, 2, 0, 6,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 0, 4, 0,
- 4, 0, 0, 7, 1, 1, 1, 0, 4, 2
-};
-
-static const short yydefact[] = { 0,
- 35, 36, 37, 0, 0, 0, 0, 0, 0, 1,
- 2, 6, 4, 5, 7, 8, 0, 0, 32, 30,
- 28, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 11, 3,
- 0, 0, 0, 27, 26, 25, 19, 20, 23, 24,
- 21, 22, 17, 18, 15, 16, 12, 13, 14, 38,
- 0, 31, 29, 38, 38, 0, 33, 40, 0, 10,
- 0, 38, 34, 39, 0, 0, 0
-};
-
-static const short yydefgoto[] = { 75,
- 10, 11, 38, 43, 42, 41, 71, 66
-};
-
-static const short yypact[] = { 12,
--32768,-32768,-32768, 12, 12, 12, 12, 1, 12, 4,
- 79,-32768,-32768,-32768,-32768, -21, 31, 12,-32768,-32768,
--32768, 12, 12, 12, 12, 12, 12, 12, 12, 12,
- 12, 12, 12, 12, 12, 12, 12, 30,-32768, 79,
- 12, 12, 12, 110, 124, 137, 148, 148, 155, 155,
- 155, 155, 160, 160, -17, -17,-32768,-32768,-32768, 2,
- 58, 34, 95, 2, 2, 54,-32768,-32768, 55,-32768,
- 12, 2, 79,-32768, 63, 188,-32768
-};
-
-static const short yypgoto[] = {-32768,
- 180, -4,-32768,-32768,-32768,-32768,-32768, -60
-};
-
-
-#define YYLAST 189
-
-
-static const short yytable[] = { 12,
- 13, 14, 15, 68, 69, 16, 64, 35, 36, 37,
- -9, 74, 18, 40, 1, 2, 3, 44, 45, 46,
- 47, 48, 49, 50, 51, 52, 53, 54, 55, 56,
- 57, 58, 59, 65, 4, 5, 61, 62, 63, 18,
- 6, 7, 8, 9, 21, 22, 23, 24, 25, 26,
- 27, 28, 29, 30, 31, 32, 33, 34, 35, 36,
- 37, 60, 76, 39, 19, 67, 73, 20, 21, 22,
- 23, 24, 25, 26, 27, 28, 29, 30, 31, 32,
- 33, 34, 35, 36, 37, 19, 70, 72, 20, 21,
- 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
- 32, 33, 34, 35, 36, 37, 22, 23, 24, 25,
- 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
- 36, 37, 23, 24, 25, 26, 27, 28, 29, 30,
- 31, 32, 33, 34, 35, 36, 37, 24, 25, 26,
- 27, 28, 29, 30, 31, 32, 33, 34, 35, 36,
- 37, 25, 26, 27, 28, 29, 30, 31, 32, 33,
- 34, 35, 36, 37, 27, 28, 29, 30, 31, 32,
- 33, 34, 35, 36, 37, 31, 32, 33, 34, 35,
- 36, 37, 33, 34, 35, 36, 37, 77, 17
-};
-
-static const short yycheck[] = { 4,
- 5, 6, 7, 64, 65, 5, 5, 25, 26, 27,
- 32, 72, 9, 18, 3, 4, 5, 22, 23, 24,
- 25, 26, 27, 28, 29, 30, 31, 32, 33, 34,
- 35, 36, 37, 32, 23, 24, 41, 42, 43, 9,
- 29, 30, 31, 32, 11, 12, 13, 14, 15, 16,
- 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,
- 27, 32, 0, 33, 7, 8, 71, 10, 11, 12,
- 13, 14, 15, 16, 17, 18, 19, 20, 21, 22,
- 23, 24, 25, 26, 27, 7, 33, 33, 10, 11,
- 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
- 22, 23, 24, 25, 26, 27, 12, 13, 14, 15,
- 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
- 26, 27, 13, 14, 15, 16, 17, 18, 19, 20,
- 21, 22, 23, 24, 25, 26, 27, 14, 15, 16,
- 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,
- 27, 15, 16, 17, 18, 19, 20, 21, 22, 23,
- 24, 25, 26, 27, 17, 18, 19, 20, 21, 22,
- 23, 24, 25, 26, 27, 21, 22, 23, 24, 25,
- 26, 27, 23, 24, 25, 26, 27, 0, 9
-};
-/* -*-C-*- Note some compilers choke on comments on `#line' lines. */
-#line 3 "/usr/share/misc/bison.simple"
-/* This file comes from bison-1.28. */
-
-/* Skeleton output parser for bison,
- Copyright (C) 1984, 1989, 1990 Free Software Foundation, Inc.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-/* As a special exception, when this file is copied by Bison into a
- Bison output file, you may use that output file without restriction.
- This special exception was added by the Free Software Foundation
- in version 1.24 of Bison. */
-
-/* This is the parser code that is written into each bison parser
- when the %semantic_parser declaration is not specified in the grammar.
- It was written by Richard Stallman by simplifying the hairy parser
- used when %semantic_parser is specified. */
-
-#ifndef YYSTACK_USE_ALLOCA
-#ifdef alloca
-#define YYSTACK_USE_ALLOCA
-#else /* alloca not defined */
-#ifdef __GNUC__
-#define YYSTACK_USE_ALLOCA
-#define alloca __builtin_alloca
-#else /* not GNU C. */
-#if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi) || (defined (__sun) && defined (__i386))
-#define YYSTACK_USE_ALLOCA
-#include <alloca.h>
-#else /* not sparc */
-/* We think this test detects Watcom and Microsoft C. */
-/* This used to test MSDOS, but that is a bad idea
- since that symbol is in the user namespace. */
-#if (defined (_MSDOS) || defined (_MSDOS_)) && !defined (__TURBOC__)
-#if 0 /* No need for malloc.h, which pollutes the namespace;
- instead, just don't use alloca. */
-#include <malloc.h>
-#endif
-#else /* not MSDOS, or __TURBOC__ */
-#if defined(_AIX)
-/* I don't know what this was needed for, but it pollutes the namespace.
- So I turned it off. rms, 2 May 1997. */
-/* #include <malloc.h> */
- #pragma alloca
-#define YYSTACK_USE_ALLOCA
-#else /* not MSDOS, or __TURBOC__, or _AIX */
-#if 0
-#ifdef __hpux /* haible@ilog.fr says this works for HPUX 9.05 and up,
- and on HPUX 10. Eventually we can turn this on. */
-#define YYSTACK_USE_ALLOCA
-#define alloca __builtin_alloca
-#endif /* __hpux */
-#endif
-#endif /* not _AIX */
-#endif /* not MSDOS, or __TURBOC__ */
-#endif /* not sparc */
-#endif /* not GNU C */
-#endif /* alloca not defined */
-#endif /* YYSTACK_USE_ALLOCA not defined */
-
-#ifdef YYSTACK_USE_ALLOCA
-#define YYSTACK_ALLOC alloca
-#else
-#define YYSTACK_ALLOC malloc
-#endif
-
-/* Note: there must be only one dollar sign in this file.
- It is replaced by the list of actions, each action
- as one case of the switch. */
-
-#define yyerrok (yyerrstatus = 0)
-#define yyclearin (yychar = YYEMPTY)
-#define YYEMPTY -2
-#define YYEOF 0
-#define YYACCEPT goto yyacceptlab
-#define YYABORT goto yyabortlab
-#define YYERROR goto yyerrlab1
-/* Like YYERROR except do call yyerror.
- This remains here temporarily to ease the
- transition to the new meaning of YYERROR, for GCC.
- Once GCC version 2 has supplanted version 1, this can go. */
-#define YYFAIL goto yyerrlab
-#define YYRECOVERING() (!!yyerrstatus)
-#define YYBACKUP(token, value) \
-do \
- if (yychar == YYEMPTY && yylen == 1) \
- { yychar = (token), yylval = (value); \
- yychar1 = YYTRANSLATE (yychar); \
- YYPOPSTACK; \
- goto yybackup; \
- } \
- else \
- { yyerror ("syntax error: cannot back up"); YYERROR; } \
-while (0)
-
-#define YYTERROR 1
-#define YYERRCODE 256
-
-#ifndef YYPURE
-#define YYLEX yylex()
-#endif
-
-#ifdef YYPURE
-#ifdef YYLSP_NEEDED
-#ifdef YYLEX_PARAM
-#define YYLEX yylex(&yylval, &yylloc, YYLEX_PARAM)
-#else
-#define YYLEX yylex(&yylval, &yylloc)
-#endif
-#else /* not YYLSP_NEEDED */
-#ifdef YYLEX_PARAM
-#define YYLEX yylex(&yylval, YYLEX_PARAM)
-#else
-#define YYLEX yylex(&yylval)
-#endif
-#endif /* not YYLSP_NEEDED */
-#endif
-
-/* If nonreentrant, generate the variables here */
-
-#ifndef YYPURE
-
-int yychar; /* the lookahead symbol */
-YYSTYPE yylval; /* the semantic value of the */
- /* lookahead symbol */
-
-#ifdef YYLSP_NEEDED
-YYLTYPE yylloc; /* location data for the lookahead */
- /* symbol */
-#endif
-
-int yynerrs; /* number of parse errors so far */
-#endif /* not YYPURE */
-
-#if YYDEBUG != 0
-int yydebug; /* nonzero means print parse trace */
-/* Since this is uninitialized, it does not stop multiple parsers
- from coexisting. */
-#endif
-
-/* YYINITDEPTH indicates the initial size of the parser's stacks */
-
-#ifndef YYINITDEPTH
-#define YYINITDEPTH 200
-#endif
-
-/* YYMAXDEPTH is the maximum size the stacks can grow to
- (effective only if the built-in stack extension method is used). */
-
-#if YYMAXDEPTH == 0
-#undef YYMAXDEPTH
-#endif
-
-#ifndef YYMAXDEPTH
-#define YYMAXDEPTH 10000
-#endif
-\f
-/* Define __yy_memcpy. Note that the size argument
- should be passed with type unsigned int, because that is what the non-GCC
- definitions require. With GCC, __builtin_memcpy takes an arg
- of type size_t, but it can handle unsigned int. */
-
-#if __GNUC__ > 1 /* GNU C and GNU C++ define this. */
-#define __yy_memcpy(TO,FROM,COUNT) __builtin_memcpy(TO,FROM,COUNT)
-#else /* not GNU C or C++ */
-#ifndef __cplusplus
-
-/* This is the most reliable way to avoid incompatibilities
- in available built-in functions on various systems. */
-static void
-__yy_memcpy (to, from, count)
- char *to;
- char *from;
- unsigned int count;
-{
- register char *f = from;
- register char *t = to;
- register int i = count;
-
- while (i-- > 0)
- *t++ = *f++;
-}
-
-#else /* __cplusplus */
-
-/* This is the most reliable way to avoid incompatibilities
- in available built-in functions on various systems. */
-static void
-__yy_memcpy (char *to, char *from, unsigned int count)
-{
- register char *t = to;
- register char *f = from;
- register int i = count;
-
- while (i-- > 0)
- *t++ = *f++;
-}
-
-#endif
-#endif
-\f
-#line 217 "/usr/share/misc/bison.simple"
-
-/* The user can define YYPARSE_PARAM as the name of an argument to be passed
- into yyparse. The argument should have type void *.
- It should actually point to an object.
- Grammar actions can access the variable by casting it
- to the proper pointer type. */
-
-#ifdef YYPARSE_PARAM
-#ifdef __cplusplus
-#define YYPARSE_PARAM_ARG void *YYPARSE_PARAM
-#define YYPARSE_PARAM_DECL
-#else /* not __cplusplus */
-#define YYPARSE_PARAM_ARG YYPARSE_PARAM
-#define YYPARSE_PARAM_DECL void *YYPARSE_PARAM;
-#endif /* not __cplusplus */
-#else /* not YYPARSE_PARAM */
-#define YYPARSE_PARAM_ARG
-#define YYPARSE_PARAM_DECL
-#endif /* not YYPARSE_PARAM */
-
-/* Prevent warning if -Wstrict-prototypes. */
-#ifdef __GNUC__
-#ifdef YYPARSE_PARAM
-int yyparse (void *);
-#else
-int yyparse (void);
-#endif
-#endif
-
-int
-yyparse(YYPARSE_PARAM_ARG)
- YYPARSE_PARAM_DECL
-{
- register int yystate;
- register int yyn;
- register short *yyssp;
- register YYSTYPE *yyvsp;
- int yyerrstatus; /* number of tokens to shift before error messages enabled */
- int yychar1 = 0; /* lookahead token as an internal (translated) token number */
-
- short yyssa[YYINITDEPTH]; /* the state stack */
- YYSTYPE yyvsa[YYINITDEPTH]; /* the semantic value stack */
-
- short *yyss = yyssa; /* refer to the stacks thru separate pointers */
- YYSTYPE *yyvs = yyvsa; /* to allow yyoverflow to reallocate them elsewhere */
-
-#ifdef YYLSP_NEEDED
- YYLTYPE yylsa[YYINITDEPTH]; /* the location stack */
- YYLTYPE *yyls = yylsa;
- YYLTYPE *yylsp;
-
-#define YYPOPSTACK (yyvsp--, yyssp--, yylsp--)
-#else
-#define YYPOPSTACK (yyvsp--, yyssp--)
-#endif
-
- int yystacksize = YYINITDEPTH;
- int yyfree_stacks = 0;
-
-#ifdef YYPURE
- int yychar;
- YYSTYPE yylval;
- int yynerrs;
-#ifdef YYLSP_NEEDED
- YYLTYPE yylloc;
-#endif
-#endif
-
- YYSTYPE yyval; /* the variable used to return */
- /* semantic values from the action */
- /* routines */
-
- int yylen;
-
-#if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Starting parse\n");
-#endif
-
- yystate = 0;
- yyerrstatus = 0;
- yynerrs = 0;
- yychar = YYEMPTY; /* Cause a token to be read. */
-
- /* Initialize stack pointers.
- Waste one element of value and location stack
- so that they stay on the same level as the state stack.
- The wasted elements are never initialized. */
-
- yyssp = yyss - 1;
- yyvsp = yyvs;
-#ifdef YYLSP_NEEDED
- yylsp = yyls;
-#endif
-
-/* Push a new state, which is found in yystate . */
-/* In all cases, when you get here, the value and location stacks
- have just been pushed. so pushing a state here evens the stacks. */
-yynewstate:
-
- *++yyssp = yystate;
-
- if (yyssp >= yyss + yystacksize - 1)
- {
- /* Give user a chance to reallocate the stack */
- /* Use copies of these so that the &'s don't force the real ones into memory. */
- YYSTYPE *yyvs1 = yyvs;
- short *yyss1 = yyss;
-#ifdef YYLSP_NEEDED
- YYLTYPE *yyls1 = yyls;
-#endif
-
- /* Get the current used size of the three stacks, in elements. */
- int size = yyssp - yyss + 1;
-
-#ifdef yyoverflow
- /* Each stack pointer address is followed by the size of
- the data in use in that stack, in bytes. */
-#ifdef YYLSP_NEEDED
- /* This used to be a conditional around just the two extra args,
- but that might be undefined if yyoverflow is a macro. */
- yyoverflow("parser stack overflow",
- &yyss1, size * sizeof (*yyssp),
- &yyvs1, size * sizeof (*yyvsp),
- &yyls1, size * sizeof (*yylsp),
- &yystacksize);
-#else
- yyoverflow("parser stack overflow",
- &yyss1, size * sizeof (*yyssp),
- &yyvs1, size * sizeof (*yyvsp),
- &yystacksize);
-#endif
-
- yyss = yyss1; yyvs = yyvs1;
-#ifdef YYLSP_NEEDED
- yyls = yyls1;
-#endif
-#else /* no yyoverflow */
- /* Extend the stack our own way. */
- if (yystacksize >= YYMAXDEPTH)
- {
- yyerror("parser stack overflow");
- if (yyfree_stacks)
- {
- free (yyss);
- free (yyvs);
-#ifdef YYLSP_NEEDED
- free (yyls);
-#endif
- }
- return 2;
- }
- yystacksize *= 2;
- if (yystacksize > YYMAXDEPTH)
- yystacksize = YYMAXDEPTH;
-#ifndef YYSTACK_USE_ALLOCA
- yyfree_stacks = 1;
-#endif
- yyss = (short *) YYSTACK_ALLOC (yystacksize * sizeof (*yyssp));
- __yy_memcpy ((char *)yyss, (char *)yyss1,
- size * (unsigned int) sizeof (*yyssp));
- yyvs = (YYSTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yyvsp));
- __yy_memcpy ((char *)yyvs, (char *)yyvs1,
- size * (unsigned int) sizeof (*yyvsp));
-#ifdef YYLSP_NEEDED
- yyls = (YYLTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yylsp));
- __yy_memcpy ((char *)yyls, (char *)yyls1,
- size * (unsigned int) sizeof (*yylsp));
-#endif
-#endif /* no yyoverflow */
-
- yyssp = yyss + size - 1;
- yyvsp = yyvs + size - 1;
-#ifdef YYLSP_NEEDED
- yylsp = yyls + size - 1;
-#endif
-
-#if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Stack size increased to %d\n", yystacksize);
-#endif
-
- if (yyssp >= yyss + yystacksize - 1)
- YYABORT;
- }
-
-#if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Entering state %d\n", yystate);
-#endif
-
- goto yybackup;
- yybackup:
-
-/* Do appropriate processing given the current state. */
-/* Read a lookahead token if we need one and don't already have one. */
-/* yyresume: */
-
- /* First try to decide what to do without reference to lookahead token. */
-
- yyn = yypact[yystate];
- if (yyn == YYFLAG)
- goto yydefault;
-
- /* Not known => get a lookahead token if don't already have one. */
-
- /* yychar is either YYEMPTY or YYEOF
- or a valid token in external form. */
-
- if (yychar == YYEMPTY)
- {
-#if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Reading a token: ");
-#endif
- yychar = YYLEX;
- }
-
- /* Convert token to internal form (in yychar1) for indexing tables with */
-
- if (yychar <= 0) /* This means end of input. */
- {
- yychar1 = 0;
- yychar = YYEOF; /* Don't call YYLEX any more */
-
-#if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Now at end of input.\n");
-#endif
- }
- else
- {
- yychar1 = YYTRANSLATE(yychar);
-
-#if YYDEBUG != 0
- if (yydebug)
- {
- fprintf (stderr, "Next token is %d (%s", yychar, yytname[yychar1]);
- /* Give the individual parser a way to print the precise meaning
- of a token, for further debugging info. */
-#ifdef YYPRINT
- YYPRINT (stderr, yychar, yylval);
-#endif
- fprintf (stderr, ")\n");
- }
-#endif
- }
-
- yyn += yychar1;
- if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1)
- goto yydefault;
-
- yyn = yytable[yyn];
-
- /* yyn is what to do for this token type in this state.
- Negative => reduce, -yyn is rule number.
- Positive => shift, yyn is new state.
- New state is final state => don't bother to shift,
- just return success.
- 0, or most negative number => error. */
-
- if (yyn < 0)
- {
- if (yyn == YYFLAG)
- goto yyerrlab;
- yyn = -yyn;
- goto yyreduce;
- }
- else if (yyn == 0)
- goto yyerrlab;
-
- if (yyn == YYFINAL)
- YYACCEPT;
-
- /* Shift the lookahead token. */
-
-#if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]);
-#endif
-
- /* Discard the token being shifted unless it is eof. */
- if (yychar != YYEOF)
- yychar = YYEMPTY;
-
- *++yyvsp = yylval;
-#ifdef YYLSP_NEEDED
- *++yylsp = yylloc;
-#endif
-
- /* count tokens shifted since error; after three, turn off error status. */
- if (yyerrstatus) yyerrstatus--;
-
- yystate = yyn;
- goto yynewstate;
-
-/* Do the default action for the current state. */
-yydefault:
-
- yyn = yydefact[yystate];
- if (yyn == 0)
- goto yyerrlab;
-
-/* Do a reduction. yyn is the number of a rule to reduce with. */
-yyreduce:
- yylen = yyr2[yyn];
- if (yylen > 0)
- yyval = yyvsp[1-yylen]; /* implement default value of the action */
-
-#if YYDEBUG != 0
- if (yydebug)
- {
- int i;
-
- fprintf (stderr, "Reducing via rule %d (line %d), ",
- yyn, yyrline[yyn]);
-
- /* Print the symbols being reduced, and their result. */
- for (i = yyprhs[yyn]; yyrhs[i] > 0; i++)
- fprintf (stderr, "%s ", yytname[yyrhs[i]]);
- fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]);
- }
-#endif
-
-
- switch (yyn) {
-
-case 1:
-#line 186 "cexp.y"
-{
- expression_value = yyvsp[0].integer.value;
-#ifdef TEST_EXP_READER
- expression_signedp = yyvsp[0].integer.signedp;
-#endif
- ;
- break;}
-case 3:
-#line 197 "cexp.y"
-{ if (pedantic)
- pedwarn ("comma operator in operand of `#if'");
- yyval.integer = yyvsp[0].integer; ;
- break;}
-case 4:
-#line 204 "cexp.y"
-{ yyval.integer.value = - yyvsp[0].integer.value;
- yyval.integer.signedp = yyvsp[0].integer.signedp;
- if ((yyval.integer.value & yyvsp[0].integer.value & yyval.integer.signedp) < 0)
- integer_overflow (); ;
- break;}
-case 5:
-#line 209 "cexp.y"
-{ yyval.integer.value = ! yyvsp[0].integer.value;
- yyval.integer.signedp = SIGNED; ;
- break;}
-case 6:
-#line 212 "cexp.y"
-{ yyval.integer = yyvsp[0].integer; ;
- break;}
-case 7:
-#line 214 "cexp.y"
-{ yyval.integer.value = ~ yyvsp[0].integer.value;
- yyval.integer.signedp = yyvsp[0].integer.signedp; ;
- break;}
-case 8:
-#line 217 "cexp.y"
-{ yyval.integer.value = check_assertion (yyvsp[0].name.address, yyvsp[0].name.length,
- 0, NULL_PTR);
- yyval.integer.signedp = SIGNED; ;
- break;}
-case 9:
-#line 221 "cexp.y"
-{ keyword_parsing = 1; ;
- break;}
-case 10:
-#line 223 "cexp.y"
-{ yyval.integer.value = check_assertion (yyvsp[-4].name.address, yyvsp[-4].name.length,
- 1, yyvsp[-1].keywords);
- keyword_parsing = 0;
- yyval.integer.signedp = SIGNED; ;
- break;}
-case 11:
-#line 228 "cexp.y"
-{ yyval.integer = yyvsp[-1].integer; ;
- break;}
-case 12:
-#line 233 "cexp.y"
-{ yyval.integer.signedp = yyvsp[-2].integer.signedp & yyvsp[0].integer.signedp;
- if (yyval.integer.signedp)
- {
- yyval.integer.value = yyvsp[-2].integer.value * yyvsp[0].integer.value;
- if (yyvsp[-2].integer.value
- && (yyval.integer.value / yyvsp[-2].integer.value != yyvsp[0].integer.value
- || (yyval.integer.value & yyvsp[-2].integer.value & yyvsp[0].integer.value) < 0))
- integer_overflow ();
- }
- else
- yyval.integer.value = ((unsigned HOST_WIDEST_INT) yyvsp[-2].integer.value
- * yyvsp[0].integer.value); ;
- break;}
-case 13:
-#line 246 "cexp.y"
-{ if (yyvsp[0].integer.value == 0)
- {
- if (!skip_evaluation)
- error ("division by zero in #if");
- yyvsp[0].integer.value = 1;
- }
- yyval.integer.signedp = yyvsp[-2].integer.signedp & yyvsp[0].integer.signedp;
- if (yyval.integer.signedp)
- {
- yyval.integer.value = yyvsp[-2].integer.value / yyvsp[0].integer.value;
- if ((yyval.integer.value & yyvsp[-2].integer.value & yyvsp[0].integer.value) < 0)
- integer_overflow ();
- }
- else
- yyval.integer.value = ((unsigned HOST_WIDEST_INT) yyvsp[-2].integer.value
- / yyvsp[0].integer.value); ;
- break;}
-case 14:
-#line 263 "cexp.y"
-{ if (yyvsp[0].integer.value == 0)
- {
- if (!skip_evaluation)
- error ("division by zero in #if");
- yyvsp[0].integer.value = 1;
- }
- yyval.integer.signedp = yyvsp[-2].integer.signedp & yyvsp[0].integer.signedp;
- if (yyval.integer.signedp)
- yyval.integer.value = yyvsp[-2].integer.value % yyvsp[0].integer.value;
- else
- yyval.integer.value = ((unsigned HOST_WIDEST_INT) yyvsp[-2].integer.value
- % yyvsp[0].integer.value); ;
- break;}
-case 15:
-#line 276 "cexp.y"
-{ yyval.integer.value = yyvsp[-2].integer.value + yyvsp[0].integer.value;
- yyval.integer.signedp = yyvsp[-2].integer.signedp & yyvsp[0].integer.signedp;
- if (overflow_sum_sign (yyvsp[-2].integer.value, yyvsp[0].integer.value,
- yyval.integer.value, yyval.integer.signedp))
- integer_overflow (); ;
- break;}
-case 16:
-#line 282 "cexp.y"
-{ yyval.integer.value = yyvsp[-2].integer.value - yyvsp[0].integer.value;
- yyval.integer.signedp = yyvsp[-2].integer.signedp & yyvsp[0].integer.signedp;
- if (overflow_sum_sign (yyval.integer.value, yyvsp[0].integer.value,
- yyvsp[-2].integer.value, yyval.integer.signedp))
- integer_overflow (); ;
- break;}
-case 17:
-#line 288 "cexp.y"
-{ yyval.integer.signedp = yyvsp[-2].integer.signedp;
- if ((yyvsp[0].integer.value & yyvsp[0].integer.signedp) < 0)
- yyval.integer.value = right_shift (&yyvsp[-2].integer, -yyvsp[0].integer.value);
- else
- yyval.integer.value = left_shift (&yyvsp[-2].integer, yyvsp[0].integer.value); ;
- break;}
-case 18:
-#line 294 "cexp.y"
-{ yyval.integer.signedp = yyvsp[-2].integer.signedp;
- if ((yyvsp[0].integer.value & yyvsp[0].integer.signedp) < 0)
- yyval.integer.value = left_shift (&yyvsp[-2].integer, -yyvsp[0].integer.value);
- else
- yyval.integer.value = right_shift (&yyvsp[-2].integer, yyvsp[0].integer.value); ;
- break;}
-case 19:
-#line 300 "cexp.y"
-{ yyval.integer.value = (yyvsp[-2].integer.value == yyvsp[0].integer.value);
- yyval.integer.signedp = SIGNED; ;
- break;}
-case 20:
-#line 303 "cexp.y"
-{ yyval.integer.value = (yyvsp[-2].integer.value != yyvsp[0].integer.value);
- yyval.integer.signedp = SIGNED; ;
- break;}
-case 21:
-#line 306 "cexp.y"
-{ yyval.integer.signedp = SIGNED;
- if (yyvsp[-2].integer.signedp & yyvsp[0].integer.signedp)
- yyval.integer.value = yyvsp[-2].integer.value <= yyvsp[0].integer.value;
- else
- yyval.integer.value = ((unsigned HOST_WIDEST_INT) yyvsp[-2].integer.value
- <= yyvsp[0].integer.value); ;
- break;}
-case 22:
-#line 313 "cexp.y"
-{ yyval.integer.signedp = SIGNED;
- if (yyvsp[-2].integer.signedp & yyvsp[0].integer.signedp)
- yyval.integer.value = yyvsp[-2].integer.value >= yyvsp[0].integer.value;
- else
- yyval.integer.value = ((unsigned HOST_WIDEST_INT) yyvsp[-2].integer.value
- >= yyvsp[0].integer.value); ;
- break;}
-case 23:
-#line 320 "cexp.y"
-{ yyval.integer.signedp = SIGNED;
- if (yyvsp[-2].integer.signedp & yyvsp[0].integer.signedp)
- yyval.integer.value = yyvsp[-2].integer.value < yyvsp[0].integer.value;
- else
- yyval.integer.value = ((unsigned HOST_WIDEST_INT) yyvsp[-2].integer.value
- < yyvsp[0].integer.value); ;
- break;}
-case 24:
-#line 327 "cexp.y"
-{ yyval.integer.signedp = SIGNED;
- if (yyvsp[-2].integer.signedp & yyvsp[0].integer.signedp)
- yyval.integer.value = yyvsp[-2].integer.value > yyvsp[0].integer.value;
- else
- yyval.integer.value = ((unsigned HOST_WIDEST_INT) yyvsp[-2].integer.value
- > yyvsp[0].integer.value); ;
- break;}
-case 25:
-#line 334 "cexp.y"
-{ yyval.integer.value = yyvsp[-2].integer.value & yyvsp[0].integer.value;
- yyval.integer.signedp = yyvsp[-2].integer.signedp & yyvsp[0].integer.signedp; ;
- break;}
-case 26:
-#line 337 "cexp.y"
-{ yyval.integer.value = yyvsp[-2].integer.value ^ yyvsp[0].integer.value;
- yyval.integer.signedp = yyvsp[-2].integer.signedp & yyvsp[0].integer.signedp; ;
- break;}
-case 27:
-#line 340 "cexp.y"
-{ yyval.integer.value = yyvsp[-2].integer.value | yyvsp[0].integer.value;
- yyval.integer.signedp = yyvsp[-2].integer.signedp & yyvsp[0].integer.signedp; ;
- break;}
-case 28:
-#line 343 "cexp.y"
-{ skip_evaluation += !yyvsp[-1].integer.value; ;
- break;}
-case 29:
-#line 345 "cexp.y"
-{ skip_evaluation -= !yyvsp[-3].integer.value;
- yyval.integer.value = (yyvsp[-3].integer.value && yyvsp[0].integer.value);
- yyval.integer.signedp = SIGNED; ;
- break;}
-case 30:
-#line 349 "cexp.y"
-{ skip_evaluation += !!yyvsp[-1].integer.value; ;
- break;}
-case 31:
-#line 351 "cexp.y"
-{ skip_evaluation -= !!yyvsp[-3].integer.value;
- yyval.integer.value = (yyvsp[-3].integer.value || yyvsp[0].integer.value);
- yyval.integer.signedp = SIGNED; ;
- break;}
-case 32:
-#line 355 "cexp.y"
-{ skip_evaluation += !yyvsp[-1].integer.value; ;
- break;}
-case 33:
-#line 357 "cexp.y"
-{ skip_evaluation += !!yyvsp[-4].integer.value - !yyvsp[-4].integer.value; ;
- break;}
-case 34:
-#line 359 "cexp.y"
-{ skip_evaluation -= !!yyvsp[-6].integer.value;
- yyval.integer.value = yyvsp[-6].integer.value ? yyvsp[-3].integer.value : yyvsp[0].integer.value;
- yyval.integer.signedp = yyvsp[-3].integer.signedp & yyvsp[0].integer.signedp; ;
- break;}
-case 35:
-#line 363 "cexp.y"
-{ yyval.integer = yylval.integer; ;
- break;}
-case 36:
-#line 365 "cexp.y"
-{ yyval.integer = yylval.integer; ;
- break;}
-case 37:
-#line 367 "cexp.y"
-{ if (warn_undef && !skip_evaluation)
- warning ("`%.*s' is not defined",
- yyvsp[0].name.length, yyvsp[0].name.address);
- yyval.integer.value = 0;
- yyval.integer.signedp = SIGNED; ;
- break;}
-case 38:
-#line 375 "cexp.y"
-{ yyval.keywords = 0; ;
- break;}
-case 39:
-#line 377 "cexp.y"
-{ struct arglist *temp;
- yyval.keywords = (struct arglist *) xmalloc (sizeof (struct arglist));
- yyval.keywords->next = yyvsp[-2].keywords;
- yyval.keywords->name = (U_CHAR *) "(";
- yyval.keywords->length = 1;
- temp = yyval.keywords;
- while (temp != 0 && temp->next != 0)
- temp = temp->next;
- temp->next = (struct arglist *) xmalloc (sizeof (struct arglist));
- temp->next->next = yyvsp[0].keywords;
- temp->next->name = (U_CHAR *) ")";
- temp->next->length = 1; ;
- break;}
-case 40:
-#line 390 "cexp.y"
-{ yyval.keywords = (struct arglist *) xmalloc (sizeof (struct arglist));
- yyval.keywords->name = yyvsp[-1].name.address;
- yyval.keywords->length = yyvsp[-1].name.length;
- yyval.keywords->next = yyvsp[0].keywords; ;
- break;}
-}
- /* the action file gets copied in in place of this dollarsign */
-#line 543 "/usr/share/misc/bison.simple"
-\f
- yyvsp -= yylen;
- yyssp -= yylen;
-#ifdef YYLSP_NEEDED
- yylsp -= yylen;
-#endif
-
-#if YYDEBUG != 0
- if (yydebug)
- {
- short *ssp1 = yyss - 1;
- fprintf (stderr, "state stack now");
- while (ssp1 != yyssp)
- fprintf (stderr, " %d", *++ssp1);
- fprintf (stderr, "\n");
- }
-#endif
-
- *++yyvsp = yyval;
-
-#ifdef YYLSP_NEEDED
- yylsp++;
- if (yylen == 0)
- {
- yylsp->first_line = yylloc.first_line;
- yylsp->first_column = yylloc.first_column;
- yylsp->last_line = (yylsp-1)->last_line;
- yylsp->last_column = (yylsp-1)->last_column;
- yylsp->text = 0;
- }
- else
- {
- yylsp->last_line = (yylsp+yylen-1)->last_line;
- yylsp->last_column = (yylsp+yylen-1)->last_column;
- }
-#endif
-
- /* Now "shift" the result of the reduction.
- Determine what state that goes to,
- based on the state we popped back to
- and the rule number reduced by. */
-
- yyn = yyr1[yyn];
-
- yystate = yypgoto[yyn - YYNTBASE] + *yyssp;
- if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp)
- yystate = yytable[yystate];
- else
- yystate = yydefgoto[yyn - YYNTBASE];
-
- goto yynewstate;
-
-yyerrlab: /* here on detecting error */
-
- if (! yyerrstatus)
- /* If not already recovering from an error, report this error. */
- {
- ++yynerrs;
-
-#ifdef YYERROR_VERBOSE
- yyn = yypact[yystate];
-
- if (yyn > YYFLAG && yyn < YYLAST)
- {
- int size = 0;
- char *msg;
- int x, count;
-
- count = 0;
- /* Start X at -yyn if nec to avoid negative indexes in yycheck. */
- for (x = (yyn < 0 ? -yyn : 0);
- x < (sizeof(yytname) / sizeof(char *)); x++)
- if (yycheck[x + yyn] == x)
- size += strlen(yytname[x]) + 15, count++;
- msg = (char *) malloc(size + 15);
- if (msg != 0)
- {
- strcpy(msg, "parse error");
-
- if (count < 5)
- {
- count = 0;
- for (x = (yyn < 0 ? -yyn : 0);
- x < (sizeof(yytname) / sizeof(char *)); x++)
- if (yycheck[x + yyn] == x)
- {
- strcat(msg, count == 0 ? ", expecting `" : " or `");
- strcat(msg, yytname[x]);
- strcat(msg, "'");
- count++;
- }
- }
- yyerror(msg);
- free(msg);
- }
- else
- yyerror ("parse error; also virtual memory exceeded");
- }
- else
-#endif /* YYERROR_VERBOSE */
- yyerror("parse error");
- }
-
- goto yyerrlab1;
-yyerrlab1: /* here on error raised explicitly by an action */
-
- if (yyerrstatus == 3)
- {
- /* if just tried and failed to reuse lookahead token after an error, discard it. */
-
- /* return failure if at end of input */
- if (yychar == YYEOF)
- YYABORT;
-
-#if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]);
-#endif
-
- yychar = YYEMPTY;
- }
-
- /* Else will try to reuse lookahead token
- after shifting the error token. */
-
- yyerrstatus = 3; /* Each real token shifted decrements this */
-
- goto yyerrhandle;
-
-yyerrdefault: /* current state does not do anything special for the error token. */
-
-#if 0
- /* This is wrong; only states that explicitly want error tokens
- should shift them. */
- yyn = yydefact[yystate]; /* If its default is to accept any token, ok. Otherwise pop it.*/
- if (yyn) goto yydefault;
-#endif
-
-yyerrpop: /* pop the current state because it cannot handle the error token */
-
- if (yyssp == yyss) YYABORT;
- yyvsp--;
- yystate = *--yyssp;
-#ifdef YYLSP_NEEDED
- yylsp--;
-#endif
-
-#if YYDEBUG != 0
- if (yydebug)
- {
- short *ssp1 = yyss - 1;
- fprintf (stderr, "Error: state stack now");
- while (ssp1 != yyssp)
- fprintf (stderr, " %d", *++ssp1);
- fprintf (stderr, "\n");
- }
-#endif
-
-yyerrhandle:
-
- yyn = yypact[yystate];
- if (yyn == YYFLAG)
- goto yyerrdefault;
-
- yyn += YYTERROR;
- if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR)
- goto yyerrdefault;
-
- yyn = yytable[yyn];
- if (yyn < 0)
- {
- if (yyn == YYFLAG)
- goto yyerrpop;
- yyn = -yyn;
- goto yyreduce;
- }
- else if (yyn == 0)
- goto yyerrpop;
-
- if (yyn == YYFINAL)
- YYACCEPT;
-
-#if YYDEBUG != 0
- if (yydebug)
- fprintf(stderr, "Shifting error token, ");
-#endif
-
- *++yyvsp = yylval;
-#ifdef YYLSP_NEEDED
- *++yylsp = yylloc;
-#endif
-
- yystate = yyn;
- goto yynewstate;
-
- yyacceptlab:
- /* YYACCEPT comes here. */
- if (yyfree_stacks)
- {
- free (yyss);
- free (yyvs);
-#ifdef YYLSP_NEEDED
- free (yyls);
-#endif
- }
- return 0;
-
- yyabortlab:
- /* YYABORT comes here. */
- if (yyfree_stacks)
- {
- free (yyss);
- free (yyvs);
-#ifdef YYLSP_NEEDED
- free (yyls);
-#endif
- }
- return 1;
-}
-#line 395 "cexp.y"
-
-\f
-/* During parsing of a C expression, the pointer to the next character
- is in this variable. */
-
-static char *lexptr;
-
-/* Take care of parsing a number (anything that starts with a digit).
- Set yylval and return the token type; update lexptr.
- LEN is the number of characters in it. */
-
-/* maybe needs to actually deal with floating point numbers */
-
-static int
-parse_number (olen)
- int olen;
-{
- register char *p = lexptr;
- register int c;
- register unsigned HOST_WIDEST_INT n = 0, nd, max_over_base;
- register int base = 10;
- register int len = olen;
- register int overflow = 0;
- register int digit, largest_digit = 0;
- int spec_long = 0;
-
- yylval.integer.signedp = SIGNED;
-
- if (*p == '0') {
- base = 8;
- if (len >= 3 && (p[1] == 'x' || p[1] == 'X')) {
- p += 2;
- base = 16;
- len -= 2;
- }
- }
-
- max_over_base = (unsigned HOST_WIDEST_INT) -1 / base;
-
- for (; len > 0; len--) {
- c = *p++;
-
- if (c >= '0' && c <= '9')
- digit = c - '0';
- else if (base == 16 && c >= 'a' && c <= 'f')
- digit = c - 'a' + 10;
- else if (base == 16 && c >= 'A' && c <= 'F')
- digit = c - 'A' + 10;
- else {
- /* `l' means long, and `u' means unsigned. */
- while (1) {
- if (c == 'l' || c == 'L')
- {
- if (!pedantic < spec_long)
- yyerror ("too many `l's in integer constant");
- spec_long++;
- }
- else if (c == 'u' || c == 'U')
- {
- if (! yylval.integer.signedp)
- yyerror ("two `u's in integer constant");
- yylval.integer.signedp = UNSIGNED;
- }
- else {
- if (c == '.' || c == 'e' || c == 'E' || c == 'p' || c == 'P')
- yyerror ("Floating point numbers not allowed in #if expressions");
- else
- yyerror ("missing white space after number `%.*s'",
- (int) (p - lexptr - 1), lexptr);
- }
-
- if (--len == 0)
- break;
- c = *p++;
- }
- /* Don't look for any more digits after the suffixes. */
- break;
- }
- if (largest_digit < digit)
- largest_digit = digit;
- nd = n * base + digit;
- overflow |= (max_over_base < n) | (nd < n);
- n = nd;
- }
-
- if (base <= largest_digit)
- pedwarn ("integer constant contains digits beyond the radix");
-
- if (overflow)
- pedwarn ("integer constant out of range");
-
- /* If too big to be signed, consider it unsigned. */
- if (((HOST_WIDEST_INT) n & yylval.integer.signedp) < 0)
- {
- if (base == 10)
- warning ("integer constant is so large that it is unsigned");
- yylval.integer.signedp = UNSIGNED;
- }
-
- lexptr = p;
- yylval.integer.value = n;
- return INT;
-}
-
-struct token {
- const char *operator;
- int token;
-};
-
-static struct token tokentab2[] = {
- {"&&", AND},
- {"||", OR},
- {"<<", LSH},
- {">>", RSH},
- {"==", EQUAL},
- {"!=", NOTEQUAL},
- {"<=", LEQ},
- {">=", GEQ},
- {"++", ERROR},
- {"--", ERROR},
- {NULL, ERROR}
-};
-
-/* Read one token, getting characters through lexptr. */
-
-static int
-yylex ()
-{
- register int c;
- register int namelen;
- register unsigned char *tokstart;
- register struct token *toktab;
- int wide_flag;
- HOST_WIDEST_INT mask;
-
- retry:
-
- tokstart = (unsigned char *) lexptr;
- c = *tokstart;
- /* See if it is a special token of length 2. */
- if (! keyword_parsing)
- for (toktab = tokentab2; toktab->operator != NULL; toktab++)
- if (c == *toktab->operator && tokstart[1] == toktab->operator[1]) {
- lexptr += 2;
- if (toktab->token == ERROR)
- yyerror ("`%s' not allowed in operand of `#if'", toktab->operator);
- return toktab->token;
- }
-
- switch (c) {
- case '\n':
- return 0;
-
- case ' ':
- case '\t':
- case '\r':
- lexptr++;
- goto retry;
-
- case 'L':
- /* Capital L may start a wide-string or wide-character constant. */
- if (lexptr[1] == '\'')
- {
- lexptr++;
- wide_flag = 1;
- mask = MAX_WCHAR_TYPE_MASK;
- goto char_constant;
- }
- if (lexptr[1] == '"')
- {
- lexptr++;
- wide_flag = 1;
- mask = MAX_WCHAR_TYPE_MASK;
- goto string_constant;
- }
- break;
-
- case '\'':
- wide_flag = 0;
- mask = MAX_CHAR_TYPE_MASK;
- char_constant:
- lexptr++;
- if (keyword_parsing) {
- char *start_ptr = lexptr - 1;
- while (1) {
- c = *lexptr++;
- if (c == '\\')
- c = parse_escape (&lexptr, mask);
- else if (c == '\'')
- break;
- }
- yylval.name.address = tokstart;
- yylval.name.length = lexptr - start_ptr;
- return NAME;
- }
-
- /* This code for reading a character constant
- handles multicharacter constants and wide characters.
- It is mostly copied from c-lex.c. */
- {
- register HOST_WIDEST_INT result = 0;
- register int num_chars = 0;
- int chars_seen = 0;
- unsigned width = MAX_CHAR_TYPE_SIZE;
- int max_chars;
-#ifdef MULTIBYTE_CHARS
- int longest_char = local_mb_cur_max ();
- char *token_buffer = (char *) alloca (longest_char);
- (void) local_mbtowc (NULL_PTR, NULL_PTR, 0);
-#endif
-
- max_chars = MAX_LONG_TYPE_SIZE / width;
- if (wide_flag)
- width = MAX_WCHAR_TYPE_SIZE;
-
- while (1)
- {
- c = *lexptr++;
-
- if (c == '\'' || c == EOF)
- break;
-
- ++chars_seen;
- if (c == '\\')
- {
- c = parse_escape (&lexptr, mask);
- }
- else
- {
-#ifdef MULTIBYTE_CHARS
- wchar_t wc;
- int i;
- int char_len = -1;
- for (i = 1; i <= longest_char; ++i)
- {
- token_buffer[i - 1] = c;
- char_len = local_mbtowc (& wc, token_buffer, i);
- if (char_len != -1)
- break;
- c = *lexptr++;
- }
- if (char_len > 1)
- {
- /* mbtowc sometimes needs an extra char before accepting */
- if (char_len < i)
- lexptr--;
- if (! wide_flag)
- {
- /* Merge character into result; ignore excess chars. */
- for (i = 1; i <= char_len; ++i)
- {
- if (i > max_chars)
- break;
- if (width < HOST_BITS_PER_INT)
- result = (result << width)
- | (token_buffer[i - 1]
- & ((1 << width) - 1));
- else
- result = token_buffer[i - 1];
- }
- num_chars += char_len;
- continue;
- }
- }
- else
- {
- if (char_len == -1)
- warning ("Ignoring invalid multibyte character");
- }
- if (wide_flag)
- c = wc;
-#endif /* ! MULTIBYTE_CHARS */
- }
-
- if (wide_flag)
- {
- if (chars_seen == 1) /* only keep the first one */
- result = c;
- continue;
- }
-
- /* Merge character into result; ignore excess chars. */
- num_chars++;
- if (num_chars <= max_chars)
- {
- if (width < HOST_BITS_PER_INT)
- result = (result << width) | (c & ((1 << width) - 1));
- else
- result = c;
- }
- }
-
- if (c != '\'')
- error ("malformatted character constant");
- else if (chars_seen == 0)
- error ("empty character constant");
- else if (num_chars > max_chars)
- {
- num_chars = max_chars;
- error ("character constant too long");
- }
- else if (chars_seen != 1 && ! traditional)
- warning ("multi-character character constant");
-
- /* If char type is signed, sign-extend the constant. */
- if (! wide_flag)
- {
- int num_bits = num_chars * width;
- if (num_bits == 0)
- /* We already got an error; avoid invalid shift. */
- yylval.integer.value = 0;
- else if (lookup ((U_CHAR *) "__CHAR_UNSIGNED__",
- sizeof ("__CHAR_UNSIGNED__") - 1, -1)
- || ((result >> (num_bits - 1)) & 1) == 0)
- yylval.integer.value
- = result & (~ (unsigned HOST_WIDEST_INT) 0
- >> (HOST_BITS_PER_WIDEST_INT - num_bits));
- else
- yylval.integer.value
- = result | ~(~ (unsigned HOST_WIDEST_INT) 0
- >> (HOST_BITS_PER_WIDEST_INT - num_bits));
- }
- else
- {
- yylval.integer.value = result;
- }
- }
-
- /* This is always a signed type. */
- yylval.integer.signedp = SIGNED;
-
- return CHAR;
-
- /* some of these chars are invalid in constant expressions;
- maybe do something about them later */
- case '/':
- case '+':
- case '-':
- case '*':
- case '%':
- case '|':
- case '&':
- case '^':
- case '~':
- case '!':
- case '@':
- case '<':
- case '>':
- case '[':
- case ']':
- case '.':
- case '?':
- case ':':
- case '=':
- case '{':
- case '}':
- case ',':
- case '#':
- if (keyword_parsing)
- break;
- case '(':
- case ')':
- lexptr++;
- return c;
-
- case '"':
- mask = MAX_CHAR_TYPE_MASK;
- string_constant:
- if (keyword_parsing) {
- char *start_ptr = lexptr;
- lexptr++;
- while (1) {
- c = *lexptr++;
- if (c == '\\')
- c = parse_escape (&lexptr, mask);
- else if (c == '"')
- break;
- }
- yylval.name.address = tokstart;
- yylval.name.length = lexptr - start_ptr;
- return NAME;
- }
- yyerror ("string constants not allowed in #if expressions");
- return ERROR;
- }
-
- if (c >= '0' && c <= '9' && !keyword_parsing) {
- /* It's a number */
- for (namelen = 1; ; namelen++) {
- int d = tokstart[namelen];
- if (! ((is_idchar[d] || d == '.')
- || ((d == '-' || d == '+')
- && (c == 'e' || c == 'E'
- || ((c == 'p' || c == 'P') && ! c89))
- && ! traditional)))
- break;
- c = d;
- }
- return parse_number (namelen);
- }
-
- /* It is a name. See how long it is. */
-
- if (keyword_parsing) {
- for (namelen = 0;; namelen++) {
- if (is_space[tokstart[namelen]])
- break;
- if (tokstart[namelen] == '(' || tokstart[namelen] == ')')
- break;
- if (tokstart[namelen] == '"' || tokstart[namelen] == '\'')
- break;
- }
- } else {
- if (!is_idstart[c]) {
- yyerror ("Invalid token in expression");
- return ERROR;
- }
-
- for (namelen = 0; is_idchar[tokstart[namelen]]; namelen++)
- ;
- }
-
- lexptr += namelen;
- yylval.name.address = tokstart;
- yylval.name.length = namelen;
- return NAME;
-}
-
-
-/* Parse a C escape sequence. STRING_PTR points to a variable
- containing a pointer to the string to parse. That pointer
- is updated past the characters we use. The value of the
- escape sequence is returned.
-
- RESULT_MASK is used to mask out the result;
- an error is reported if bits are lost thereby.
-
- A negative value means the sequence \ newline was seen,
- which is supposed to be equivalent to nothing at all.
-
- If \ is followed by a null character, we return a negative
- value and leave the string pointer pointing at the null character.
-
- If \ is followed by 000, we return 0 and leave the string pointer
- after the zeros. A value of 0 does not mean end of string. */
-
-HOST_WIDEST_INT
-parse_escape (string_ptr, result_mask)
- char **string_ptr;
- HOST_WIDEST_INT result_mask;
-{
- register int c = *(*string_ptr)++;
- switch (c)
- {
- case 'a':
- return TARGET_BELL;
- case 'b':
- return TARGET_BS;
- case 'e':
- case 'E':
- if (pedantic)
- pedwarn ("non-ANSI-standard escape sequence, `\\%c'", c);
- return TARGET_ESC;
- case 'f':
- return TARGET_FF;
- case 'n':
- return TARGET_NEWLINE;
- case 'r':
- return TARGET_CR;
- case 't':
- return TARGET_TAB;
- case 'v':
- return TARGET_VT;
- case '\n':
- return -2;
- case 0:
- (*string_ptr)--;
- return 0;
-
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- {
- register HOST_WIDEST_INT i = c - '0';
- register int count = 0;
- while (++count < 3)
- {
- c = *(*string_ptr)++;
- if (c >= '0' && c <= '7')
- i = (i << 3) + c - '0';
- else
- {
- (*string_ptr)--;
- break;
- }
- }
- if (i != (i & result_mask))
- {
- i &= result_mask;
- pedwarn ("octal escape sequence out of range");
- }
- return i;
- }
- case 'x':
- {
- register unsigned HOST_WIDEST_INT i = 0, overflow = 0;
- register int digits_found = 0, digit;
- for (;;)
- {
- c = *(*string_ptr)++;
- if (c >= '0' && c <= '9')
- digit = c - '0';
- else if (c >= 'a' && c <= 'f')
- digit = c - 'a' + 10;
- else if (c >= 'A' && c <= 'F')
- digit = c - 'A' + 10;
- else
- {
- (*string_ptr)--;
- break;
- }
- overflow |= i ^ (i << 4 >> 4);
- i = (i << 4) + digit;
- digits_found = 1;
- }
- if (!digits_found)
- yyerror ("\\x used with no following hex digits");
- if (overflow | (i != (i & result_mask)))
- {
- i &= result_mask;
- pedwarn ("hex escape sequence out of range");
- }
- return i;
- }
- default:
- return c;
- }
-}
-
-static void
-integer_overflow ()
-{
- if (!skip_evaluation && pedantic)
- pedwarn ("integer overflow in preprocessor expression");
-}
-
-static HOST_WIDEST_INT
-left_shift (a, b)
- struct constant *a;
- unsigned HOST_WIDEST_INT b;
-{
- /* It's unclear from the C standard whether shifts can overflow.
- The following code ignores overflow; perhaps a C standard
- interpretation ruling is needed. */
- if (b >= HOST_BITS_PER_WIDEST_INT)
- return 0;
- else
- return (unsigned HOST_WIDEST_INT) a->value << b;
-}
-
-static HOST_WIDEST_INT
-right_shift (a, b)
- struct constant *a;
- unsigned HOST_WIDEST_INT b;
-{
- if (b >= HOST_BITS_PER_WIDEST_INT)
- return a->signedp ? a->value >> (HOST_BITS_PER_WIDEST_INT - 1) : 0;
- else if (a->signedp)
- return a->value >> b;
- else
- return (unsigned HOST_WIDEST_INT) a->value >> b;
-}
-\f
-/* This page contains the entry point to this file. */
-
-/* Parse STRING as an expression, and complain if this fails
- to use up all of the contents of STRING.
- STRING may contain '\0' bytes; it is terminated by the first '\n'
- outside a string constant, so that we can diagnose '\0' properly.
- If WARN_UNDEFINED is nonzero, warn if undefined identifiers are evaluated.
- We do not support C comments. They should be removed before
- this function is called. */
-
-HOST_WIDEST_INT
-parse_c_expression (string, warn_undefined)
- char *string;
- int warn_undefined;
-{
- lexptr = string;
- warn_undef = warn_undefined;
-
- /* if there is some sort of scanning error, just return 0 and assume
- the parsing routine has printed an error message somewhere.
- there is surely a better thing to do than this. */
- if (setjmp (parse_return_error))
- return 0;
-
- if (yyparse () != 0)
- abort ();
-
- if (*lexptr != '\n')
- error ("Junk after end of expression.");
-
- return expression_value; /* set by yyparse () */
-}
-
-static void
-yyerror VPARAMS ((const char * msgid, ...))
-{
-#ifndef ANSI_PROTOTYPES
- const char * msgid;
-#endif
- va_list args;
-
- VA_START (args, msgid);
-
-#ifndef ANSI_PROTOTYPES
- msgid = va_arg (args, const char *);
-#endif
-
- verror (msgid, args);
- va_end (args);
- skip_evaluation = 0;
- longjmp (parse_return_error, 1);
-}
-
-\f
-#ifdef TEST_EXP_READER
-
-#if YYDEBUG
-extern int yydebug;
-#endif
-
-int pedantic;
-int traditional;
-int c89;
-
-int main PARAMS ((int, char **));
-static void initialize_random_junk PARAMS ((void));
-static void print_unsigned_host_widest_int PARAMS ((unsigned HOST_WIDEST_INT));
-
-/* Main program for testing purposes. */
-int
-main (argc, argv)
- int argc;
- char **argv;
-{
- int n, c;
- char buf[1024];
- unsigned HOST_WIDEST_INT u;
-
- pedantic = 1 < argc;
- traditional = 2 < argc;
- c89 = 3 < argc;
-#if YYDEBUG
- yydebug = 4 < argc;
-#endif
- initialize_random_junk ();
-
- for (;;) {
- printf ("enter expression: ");
- n = 0;
- while ((buf[n] = c = getchar ()) != '\n' && c != EOF)
- n++;
- if (c == EOF)
- break;
- parse_c_expression (buf, 1);
- printf ("parser returned ");
- u = (unsigned HOST_WIDEST_INT) expression_value;
- if (expression_value < 0 && expression_signedp) {
- u = -u;
- printf ("-");
- }
- if (u == 0)
- printf ("0");
- else
- print_unsigned_host_widest_int (u);
- if (! expression_signedp)
- printf("u");
- printf ("\n");
- }
-
- return 0;
-}
-
-static void
-print_unsigned_host_widest_int (u)
- unsigned HOST_WIDEST_INT u;
-{
- if (u) {
- print_unsigned_host_widest_int (u / 10);
- putchar ('0' + (int) (u % 10));
- }
-}
-
-/* table to tell if char can be part of a C identifier. */
-unsigned char is_idchar[256];
-/* table to tell if char can be first char of a c identifier. */
-unsigned char is_idstart[256];
-/* table to tell if c is horizontal or vertical space. */
-unsigned char is_space[256];
-
-/*
- * initialize random junk in the hash table and maybe other places
- */
-static void
-initialize_random_junk ()
-{
- register int i;
-
- /*
- * Set up is_idchar and is_idstart tables. These should be
- * faster than saying (is_alpha (c) || c == '_'), etc.
- * Must do set up these things before calling any routines tthat
- * refer to them.
- */
- for (i = 'a'; i <= 'z'; i++) {
- /* SKIP EBCIDIC holes, char must be a valid low case char */
- if (ISLOWER(i)) {
- ++is_idchar[TOUPPER(i)];
- ++is_idchar[i];
- ++is_idstart[TOUPPER(i)];
- ++is_idstart[i];
- }
- }
- for (i = '0'; i <= '9'; i++)
- ++is_idchar[i];
- ++is_idchar['_'];
- ++is_idstart['_'];
- ++is_idchar['$'];
- ++is_idstart['$'];
-
- ++is_space[' '];
- ++is_space['\t'];
- ++is_space['\v'];
- ++is_space['\f'];
- ++is_space['\n'];
- ++is_space['\r'];
-}
-
-void
-error VPARAMS ((char * msgid, ...))
-{
-#ifndef ANSI_PROTOTYPES
- char * msgid;
-#endif
- va_list args;
-
- VA_START (args, msgid);
-
-#ifndef ANSI_PROTOTYPES
- msgid = va_arg (args, char *);
-#endif
-
- fprintf (stderr, "error: ");
- vfprintf (stderr, _(msgid), args);
- fprintf (stderr, "\n");
- va_end (args);
-}
-
-void
-pedwarn VPARAMS ((char * msgid, ...))
-{
-#ifndef ANSI_PROTOTYPES
- char * msgid;
-#endif
- va_list args;
-
- VA_START (args, msgid);
-
-#ifndef ANSI_PROTOTYPES
- msgid = va_arg (args, char *);
-#endif
-
- fprintf (stderr, "pedwarn: ");
- vfprintf (stderr, _(msgid), args);
- fprintf (stderr, "\n");
- va_end (args);
-}
-
-void
-warning VPARAMS ((char * msgid, ...))
-{
-#ifndef ANSI_PROTOTYPES
- char * msgid;
-#endif
- va_list args;
-
- VA_START (args, msgid);
-
-#ifndef ANSI_PROTOTYPES
- msgid = va_arg (args, char *);
-#endif
-
- fprintf (stderr, "warning: ");
- vfprintf (stderr, _(msgid), args);
- fprintf (stderr, "\n");
- va_end (args);
-}
-
-
-int
-check_assertion (name, sym_length, tokens_specified, tokens)
- U_CHAR *name;
- int sym_length;
- int tokens_specified;
- struct arglist *tokens;
-{
- return 0;
-}
-
-struct hashnode *
-lookup (name, len, hash)
- U_CHAR *name;
- int len;
- int hash;
-{
- return (DEFAULT_SIGNED_CHAR) ? 0 : ((struct hashnode *) -1);
-}
-
-PTR
-xmalloc (size)
- size_t size;
-{
- return (PTR) malloc (size);
-}
-#endif
projects / platform / upstream / linaro-gcc.git / commitdiff