+++ /dev/null
-/* CPP Library.
- * Copyright (C) 1986, 87, 89, 92, 93, 94, 1995 Free Software Foundation, Inc.
- * Written by Per Bothner, 1994-95.
- * Based on CCCP program by by Paul Rubin, June 1986
- * Adapted to ANSI C, Richard Stallman, Jan 1987
- * Copyright (C) 2003-2011 Kim Woelders
- *
- * 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, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * In other words, you are welcome to use, share and improve this program.
- * You are forbidden to forbid anyone else to use, share and improve
- * what you give them. Help stamp out software-hoarding! */
-
-const char *version_string = "0.0.0";
-
-#include "config.h"
-
-#ifdef __EMX__
-#include <strings.h>
-#endif
-
-#ifndef STANDARD_INCLUDE_DIR
-#define STANDARD_INCLUDE_DIR "/usr/include"
-#endif
-
-#ifndef LOCAL_INCLUDE_DIR
-#define LOCAL_INCLUDE_DIR "/usr/local/include"
-#endif
-
-#include "cpplib.h"
-#include "cpphash.h"
-
-#ifndef STDC_VALUE
-#define STDC_VALUE 1
-#endif
-
-/* By default, colon separates directories in a path. */
-#ifndef PATH_SEPARATOR
-#define PATH_SEPARATOR ':'
-#endif
-
-#include <ctype.h>
-#include <stdio.h>
-#include <string.h>
-#include <signal.h>
-#ifdef __STDC__
-#include <stdlib.h>
-#endif
-#ifdef HAVE_ALLOCA_H
-#include <alloca.h>
-#endif
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stdlib.h>
-
-#ifndef VMS
-#ifndef USG
-#include <time.h>
-#include <sys/time.h> /* for __DATE__ and __TIME__ */
-#include <sys/resource.h>
-#else
-#include <sys/param.h> /* CYGNUS LOCAL: shebs -noquiet */
-#include <sys/times.h>
-#include <time.h>
-#include <fcntl.h>
-#endif /* USG */
-#endif /* not VMS */
-
-/* This defines "errno" properly for VMS, and gives us EACCES. */
-#include <errno.h>
-
-#ifndef O_RDONLY
-#define O_RDONLY 0
-#endif
-
-#undef MIN
-#undef MAX
-#define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
-#define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
-
-#ifndef S_ISREG
-#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
-#endif
-
-#ifndef S_ISDIR
-#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
-#endif
-
-/* Define a generic NULL if one hasn't already been defined. */
-
-#ifndef GENERIC_PTR
-#if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
-#define GENERIC_PTR void *
-#else
-#define GENERIC_PTR char *
-#endif
-#endif
-
-#ifndef INCLUDE_LEN_FUDGE
-#define INCLUDE_LEN_FUDGE 0
-#endif
-
-#define USE_FILE_NAME_MAPS 0
-
-/* Symbols to predefine. */
-
-#ifdef CPP_PREDEFINES
-static const char *predefs = CPP_PREDEFINES;
-
-#else
-static const char *predefs = "";
-
-#endif
-
-/* 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
-#define CPP_WCHAR_TYPE(PFILE) \
- (CPP_OPTIONS (PFILE)->cplusplus ? "__wchar_t" : WCHAR_TYPE)
-
-/* The string value for __USER_LABEL_PREFIX__ */
-
-#ifndef USER_LABEL_PREFIX
-#define USER_LABEL_PREFIX ""
-#endif
-
-/* The string value for __REGISTER_PREFIX__ */
-
-#ifndef REGISTER_PREFIX
-#define REGISTER_PREFIX ""
-#endif
-
-struct directive {
- int length;
- int (*func) (cpp_reader * pfile, struct directive * keyword,
- unsigned char *buf, unsigned char *limit);
- const char *name;
- enum node_type type;
- char command_reads_line;
- char traditional_comments;
- char pass_thru;
-};
-
-/* 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 */
- char *name; /* the actual name */
- /* List of token-sequences. */
- struct tokenlist_list *value;
-};
-
-#define SKIP_WHITE_SPACE(p) do { while (is_hor_space[(unsigned char)(*p)]) p++; } while (0)
-#define SKIP_ALL_WHITE_SPACE(p) do { while (is_space[(unsigned char)(*p)]) p++; } while (0)
-
-#define PEEKN(N) (CPP_BUFFER (pfile)->rlimit - CPP_BUFFER (pfile)->cur >= (N) ? CPP_BUFFER (pfile)->cur[N] : EOF)
-#define FORWARD(N) CPP_FORWARD (CPP_BUFFER (pfile), (N))
-#define GETC() CPP_BUF_GET (CPP_BUFFER (pfile))
-#define PEEKC() CPP_BUF_PEEK (CPP_BUFFER (pfile))
-/* CPP_IS_MACRO_BUFFER is true if the buffer contains macro expansion.
- * (Note that it is false while we're expanding marco *arguments*.) */
-#define CPP_IS_MACRO_BUFFER(PBUF) ((PBUF)->cleanup == macro_cleanup)
-
-/* 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). */
-
-#define NEWLINE_FIX \
- do {while (PEEKC() == '\\' && PEEKN(1) == '\n') FORWARD(2); } while(0)
-
-/* Same, but assume we've already read the potential '\\' into C. */
-#define NEWLINE_FIX1(C) do { \
- while ((C) == '\\' && PEEKC() == '\n') { FORWARD(1); (C) = GETC(); }\
- } while(0)
-
-/* Name under which this program was invoked. */
-
-char *progname;
-
-struct cpp_pending {
- struct cpp_pending *next;
- const char *cmd;
- const char *arg;
-};
-
-/* Structure returned by create_definition */
-typedef struct {
- struct definition *defn;
- char *symnam;
- int symlen;
-} MACRODEF;
-
-/* Forward declarations. */
-typedef struct file_name_list file_name_list;
-
-static void add_import(cpp_reader * pfile, int fd, char *fname);
-static int finclude(cpp_reader * pfile, int f, const char *fname,
- int system_header_p, file_name_list * dirptr);
-static void validate_else(cpp_reader * pfile, const char *directive);
-static int comp_def_part(int first, unsigned char *beg1, int len1,
- unsigned char *beg2, int len2, int last);
-static int lookup_import(cpp_reader * pfile, char *filename,
- file_name_list * searchptr);
-static int redundant_include_p(cpp_reader * pfile, char *name);
-
-static int is_system_include(cpp_reader * pfile, char *filename);
-
-static int open_include_file(cpp_reader * pfile, char *filename,
- file_name_list * searchptr);
-static int check_macro_name(cpp_reader * pfile, unsigned char *symname,
- const char *usage);
-
-static int compare_token_lists(struct arglist *l1, struct arglist *l2);
-static HOST_WIDE_INT eval_if_expression(cpp_reader * pfile, unsigned char *buf,
- int length);
-
-static int file_size_and_mode(int fd, int *mode_pointer,
- long int *size_pointer);
-static struct arglist *read_token_list(cpp_reader * pfile, int *error_flag);
-static void free_token_list(struct arglist *tokens);
-static int safe_read(int desc, char *ptr, int len);
-static void push_macro_expansion(cpp_reader * pfile,
- unsigned char *x,
- int xbuf_len, HASHNODE * hp);
-
-static struct cpp_pending *nreverse_pending(struct cpp_pending *list);
-static char *savestring(const char *input);
-
-static void conditional_skip(cpp_reader * pfile, int skip,
- enum node_type type,
- unsigned char *control_macro);
-static void skip_if_group(cpp_reader * pfile, int any);
-
-static void cpp_error_with_line(cpp_reader * pfile, int line,
- int column, const char *msg);
-static void cpp_pedwarn_with_line(cpp_reader * pfile, int line,
- int column, const char *msg);
-static void cpp_pedwarn_with_file_and_line(cpp_reader * pfile,
- const char *file, int line,
- const char *msg,
- const char *arg1,
- const char *arg2,
- const char *arg3);
-static void cpp_error_from_errno(cpp_reader * pfile, const char *name);
-
-static cpp_buffer *cpp_push_buffer(cpp_reader * pfile, unsigned char *buffer,
- long length);
-static cpp_buffer *cpp_pop_buffer(cpp_reader * pfile);
-
-/* Last arg to output_line_command. */
-enum file_change_code {
- same_file, enter_file, leave_file
-};
-
-/* These functions are declared to return int instead of void since they
- * are going to be placed in a table and some old compilers have trouble with
- * pointers to functions returning void. */
-
-static int do_define(cpp_reader * pfile, struct directive *keyword,
- unsigned char *buf, unsigned char *limit);
-
-static int do_line(cpp_reader * pfile, struct directive *keyword,
- unsigned char *unused1, unsigned char *unused2);
-
-static int do_include(cpp_reader * pfile, struct directive *keyword,
- unsigned char *unused1, unsigned char *unused2);
-
-static int do_undef(cpp_reader * pfile, struct directive *keyword,
- unsigned char *buf, unsigned char *limit);
-
-static int do_error(cpp_reader * pfile, struct directive *keyword,
- unsigned char *buf, unsigned char *limit);
-
-static int do_pragma(cpp_reader * pfile, struct directive *keyword,
- unsigned char *buf, unsigned char *limit);
-
-static int do_ident(cpp_reader * pfile, struct directive *keyword,
- unsigned char *buf, unsigned char *limit);
-
-static int do_if(cpp_reader * pfile, struct directive *keyword,
- unsigned char *buf, unsigned char *limit);
-
-static int do_xifdef(cpp_reader * pfile, struct directive *keyword,
- unsigned char *buf, unsigned char *limit);
-
-static int do_else(cpp_reader * pfile, struct directive *keyword,
- unsigned char *buf, unsigned char *limit);
-
-static int do_elif(cpp_reader * pfile, struct directive *keyword,
- unsigned char *buf, unsigned char *limit);
-
-static int do_endif(cpp_reader * pfile, struct directive *keyword,
- unsigned char *buf, unsigned char *limit);
-
-static int do_assert(cpp_reader * pfile, struct directive *keyword,
- unsigned char *buf, unsigned char *limit);
-
-static int do_unassert(cpp_reader * pfile, struct directive *keyword,
- unsigned char *buf, unsigned char *limit);
-
-static int do_warning(cpp_reader * pfile, struct directive *keyword,
- unsigned char *buf, unsigned char *limit);
-
-struct arglist *reverse_token_list(struct arglist *tokens);
-
-static int parse_name(cpp_reader * pfile, int c);
-
-static void parse_set_mark(struct parse_marker *pmark,
- cpp_reader * pfile);
-static void parse_clear_mark(struct parse_marker *pmark);
-static void parse_goto_mark(struct parse_marker *pmark,
- cpp_reader * pfile);
-static void parse_move_mark(struct parse_marker *pmark,
- cpp_reader * pfile);
-
-struct file_name_list {
- file_name_list *next;
- char *fname;
- /* If the following is nonzero, it is a macro name.
- * Don't include the file again if that macro is defined. */
- unsigned char *control_macro;
- /* If the following is nonzero, 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;
-};
-
-/* If a buffer's dir field is SELF_DIR_DUMMY, it means the file was found
- * via the same directory as the file that #included it. */
-#define SELF_DIR_DUMMY ((file_name_list*)(~0))
-
-/* #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. */
- 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++. */
-} include_defaults_array[]
-#ifdef INCLUDE_DEFAULTS
- = INCLUDE_DEFAULTS;
-
-#else
- =
-{
- /* Pick up GNU C++ specific include files. */
- {
- GPLUSPLUS_INCLUDE_DIR, 1, 1}
- ,
-#ifdef CROSS_COMPILE
- /* This is the dir for fixincludes. Put it just before
- * the files that we fix. */
- {
- GCC_INCLUDE_DIR, 0, 0}
- ,
- /* For cross-compilation, this dir name is generated
- * automatically in Makefile.in. */
- {
- CROSS_INCLUDE_DIR, 0, 0}
- ,
- /* This is another place that the target system's headers might be. */
- {
- TOOL_INCLUDE_DIR, 0, 1}
- ,
-#else /* not CROSS_COMPILE */
- /* This should be /usr/local/include and should come before
- * the fixincludes-fixed header files. */
- {
- LOCAL_INCLUDE_DIR, 0, 1}
- ,
- /* 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, 0, 1}
- ,
- /* This is the dir for fixincludes. Put it just before
- * the files that we fix. */
- {
- GCC_INCLUDE_DIR, 0, 0}
- ,
- /* Some systems have an extra dir of include files. */
-#ifdef SYSTEM_INCLUDE_DIR
- {
- SYSTEM_INCLUDE_DIR, 0, 0}
- ,
-#endif
- {
- STANDARD_INCLUDE_DIR, 0, 0}
- ,
-#endif /* not CROSS_COMPILE */
- {
- 0, 0, 0}
-};
-
-#endif /* no INCLUDE_DEFAULTS */
-
-/* Here is the actual list of #-directives, most-often-used first.
- * The initialize_builtins function assumes #define is the very first. */
-
-static struct directive directive_table[] = {
- {6, do_define, "define", T_DEFINE, 0, 1, 0},
- {5, do_xifdef, "ifdef", T_IFDEF, 1, 0, 0},
- {6, do_xifdef, "ifndef", T_IFNDEF, 1, 0, 0},
- {7, do_include, "include", T_INCLUDE, 1, 0, 0},
- {12, do_include, "include_next", T_INCLUDE_NEXT, 1, 0, 0},
- {6, do_include, "import", T_IMPORT, 1, 0, 0},
- {5, do_endif, "endif", T_ENDIF, 1, 0, 0},
- {4, do_else, "else", T_ELSE, 1, 0, 0},
- {2, do_if, "if", T_IF, 1, 0, 0},
- {4, do_elif, "elif", T_ELIF, 1, 0, 0},
- {5, do_undef, "undef", T_UNDEF, 0, 0, 0},
- {5, do_error, "error", T_ERROR, 0, 0, 0},
- {7, do_warning, "warning", T_WARNING, 0, 0, 0},
- {6, do_pragma, "pragma", T_PRAGMA, 0, 0, 1},
- {4, do_line, "line", T_LINE, 1, 0, 0},
- {5, do_ident, "ident", T_IDENT, 1, 0, 1},
-#ifdef SCCS_DIRECTIVE
- {4, do_sccs, "sccs", T_SCCS, 0, 0, 0},
-#endif
- {6, do_assert, "assert", T_ASSERT, 1, 0, 0},
- {8, do_unassert, "unassert", T_UNASSERT, 1, 0, 0},
- {-1, 0, "", T_UNUSED, 0, 0, 0},
-};
-
-/* 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 space. */
-unsigned char is_hor_space[256];
-
-/* table to tell if c is horizontal or vertical space. */
-static unsigned char is_space[256];
-
-/* Initialize syntactic classifications of characters. */
-
-static void
-initialize_char_syntax(struct cpp_options *opts)
-{
- 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++)
- {
- is_idchar[i - 'a' + 'A'] = 1;
- is_idchar[i] = 1;
- is_idstart[i - 'a' + 'A'] = 1;
- is_idstart[i] = 1;
- }
- for (i = '0'; i <= '9'; i++)
- is_idchar[i] = 1;
- is_idchar[(unsigned char)'_'] = 1;
- is_idstart[(unsigned char)'_'] = 1;
- is_idchar[(unsigned char)'$'] = opts->dollars_in_ident;
- is_idstart[(unsigned char)'$'] = opts->dollars_in_ident;
-
- /* horizontal space table */
- is_hor_space[(unsigned char)' '] = 1;
- is_hor_space[(unsigned char)'\t'] = 1;
- is_hor_space[(unsigned char)'\v'] = 1;
- is_hor_space[(unsigned char)'\f'] = 1;
- is_hor_space[(unsigned char)'\r'] = 1;
-
- is_space[(unsigned char)' '] = 1;
- is_space[(unsigned char)'\t'] = 1;
- is_space[(unsigned char)'\v'] = 1;
- is_space[(unsigned char)'\f'] = 1;
- is_space[(unsigned char)'\n'] = 1;
- is_space[(unsigned char)'\r'] = 1;
-}
-
-/* Place into PFILE a quoted string representing the string SRC.
- * Caller must reserve enough space in pfile->token_buffer. */
-static void
-quote_string(cpp_reader * pfile, const char *src)
-{
- unsigned char c;
-
- CPP_PUTC_Q(pfile, '\"');
- for (;;)
- switch ((c = *src++))
- {
- default:
- if (isprint(c))
- CPP_PUTC_Q(pfile, c);
- else
- {
- sprintf((char *)CPP_PWRITTEN(pfile), "\\%03o", c);
- CPP_ADJUST_WRITTEN(pfile, 4);
- }
- break;
-
- case '\"':
- case '\\':
- CPP_PUTC_Q(pfile, '\\');
- CPP_PUTC_Q(pfile, c);
- break;
-
- case '\0':
- CPP_PUTC_Q(pfile, '\"');
- CPP_NUL_TERMINATE_Q(pfile);
- return;
- }
-}
-
-/* Make sure PFILE->token_buffer will hold at least N more chars. */
-
-void
-cpp_grow_buffer(cpp_reader * pfile, long n)
-{
- long old_written = CPP_WRITTEN(pfile);
-
- pfile->token_buffer_size = n + 2 * pfile->token_buffer_size;
- pfile->token_buffer =
- (unsigned char *)xrealloc(pfile->token_buffer, pfile->token_buffer_size);
- CPP_SET_WRITTEN(pfile, old_written);
-}
-
-/*
- * 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.
- */
-
-void
-cpp_define(cpp_reader * pfile, unsigned char *str)
-{
- unsigned char *buf, *p;
-
- buf = str;
- p = str;
- if (!is_idstart[*p])
- {
- cpp_error(pfile, "malformed option `-D %s'", str);
- return;
- }
- while (is_idchar[*++p])
- ;
- if (*p == 0)
- {
- buf = (unsigned char *)alloca(p - buf + 4);
- strcpy((char *)buf, (const char *)str);
- strcat((char *)buf, " 1");
- }
- else if (*p != '=')
- {
- cpp_error(pfile, "malformed option `-D %s'", str);
- return;
- }
- else
- {
- unsigned char *q;
-
- /* Copy the entire option so we can modify it. */
- buf = (unsigned char *)alloca(2 * strlen((char *)str) + 1);
- strncpy((char *)buf, (const char *)str, p - str);
- /* Change the = to a space. */
- buf[p - str] = ' ';
- /* Scan for any backslash-newline and remove it. */
- p++;
- q = &buf[p - str];
- while (*p)
- {
- if (*p == '\\' && p[1] == '\n')
- p += 2;
- else
- *q++ = *p++;
- }
- *q = 0;
- }
-
- do_define(pfile, NULL, buf, buf + strlen((char *)buf));
-}
-
-/* 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(cpp_reader * pfile, const char *option, const char *str)
-{
- unsigned char *buf, *p, *q;
-
- /* Copy the entire option so we can modify it. */
- buf = (unsigned char *)alloca(strlen((char *)str) + 1);
- strcpy((char *)buf, (const char *)str);
- /* Scan for any backslash-newline and remove it. */
- p = q = buf;
- while (*p)
- {
- *q++ = *p++;
- }
- *q = 0;
-
- p = buf;
- if (!is_idstart[*p])
- {
- cpp_error(pfile, "malformed option `%s %s'", option, str);
- return;
- }
- while (is_idchar[*++p])
- ;
- while (*p == ' ' || *p == '\t')
- p++;
- if (!(*p == 0 || *p == '('))
- {
- cpp_error(pfile, "malformed option `%s %s'", option, str);
- return;
- }
- cpp_push_buffer(pfile, buf, strlen((char *)buf));
- do_assert(pfile, NULL, NULL, NULL);
- cpp_pop_buffer(pfile);
-}
-
-/* Append a chain of `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(cpp_reader * pfile, file_name_list * first,
- file_name_list * last)
-{
- struct cpp_options *opts = CPP_OPTIONS(pfile);
- file_name_list *dir;
-
- if (!first || !last)
- return;
-
- if (!opts->include)
- opts->include = first;
- else
- opts->last_include->next = first;
-
- if (!opts->first_bracket_include)
- opts->first_bracket_include = first;
-
- for (dir = first;; dir = dir->next)
- {
- int len = strlen(dir->fname) + INCLUDE_LEN_FUDGE;
-
- if (len > pfile->max_include_len)
- pfile->max_include_len = len;
- if (dir == last)
- break;
- }
-
- last->next = NULL;
- opts->last_include = last;
-}
-
-/* Add output to `deps_buffer' for the -M switch.
- * STRING points to the text to be output.
- * SPACER is ':' for targets, ' ' for dependencies, zero for text
- * to be inserted literally. */
-
-static void
-deps_output(cpp_reader * pfile, const char *string, int spacer)
-{
- int size = strlen(string);
-
- if (size == 0)
- return;
-
-#ifndef MAX_OUTPUT_COLUMNS
-#define MAX_OUTPUT_COLUMNS 72
-#endif
- if (spacer
- && pfile->deps_column > 0
- && (pfile->deps_column + size) > MAX_OUTPUT_COLUMNS)
- {
- deps_output(pfile, " \\\n ", 0);
- pfile->deps_column = 0;
- }
- if (pfile->deps_size + size + 8 > pfile->deps_allocated_size)
- {
- pfile->deps_allocated_size = (pfile->deps_size + size + 50) * 2;
- pfile->deps_buffer = (char *)xrealloc(pfile->deps_buffer,
- pfile->deps_allocated_size);
- }
- if (spacer == ' ' && pfile->deps_column > 0)
- pfile->deps_buffer[pfile->deps_size++] = ' ';
- memcpy(&pfile->deps_buffer[pfile->deps_size], string, size);
- pfile->deps_size += size;
- pfile->deps_column += size;
- if (spacer == ':')
- pfile->deps_buffer[pfile->deps_size++] = ':';
- pfile->deps_buffer[pfile->deps_size] = 0;
-}
-
-/* Given a colon-separated list of file names PATH,
- * add all the names to the search path for include files. */
-
-static void
-path_include(cpp_reader * pfile, char *path)
-{
- char *p;
-
- p = path;
-
- if (*p)
- while (1)
- {
- char *q = p;
- char *name;
- file_name_list *dirtmp;
-
- /* Find the end of this name. */
- while (*q != 0 && *q != PATH_SEPARATOR)
- q++;
- if (p == q)
- {
- /* An empty name in the path stands for the current directory. */
- name = (char *)xmalloc(2);
- name[0] = '.';
- name[1] = 0;
- }
- else
- {
- /* Otherwise use the directory that is named. */
- name = (char *)xmalloc(q - p + 1);
- memcpy(name, p, q - p);
- name[q - p] = 0;
- }
-
- dirtmp = (file_name_list *) xmalloc(sizeof(file_name_list));
-
- dirtmp->next = 0; /* New one goes on the end */
- dirtmp->control_macro = 0;
- dirtmp->c_system_include_path = 0;
- dirtmp->fname = name;
- dirtmp->got_name_map = 0;
- append_include_chain(pfile, dirtmp, dirtmp);
-
- /* Advance past this name. */
- p = q;
- if (*p == 0)
- break;
- /* Skip the colon. */
- p++;
- }
-}
-
-void
-init_parse_options(struct cpp_options *opts)
-{
- memset((char *)opts, 0, sizeof *opts);
- opts->in_fname = NULL;
- opts->out_fname = NULL;
-
- /* Initialize is_idchar to allow $. */
- opts->dollars_in_ident = 1;
- initialize_char_syntax(opts);
- opts->dollars_in_ident = DOLLARS_IN_IDENTIFIERS > 0;
-
- opts->no_line_commands = 0;
- opts->no_trigraphs = 1;
- opts->put_out_comments = 0;
- opts->print_include_names = 0;
- opts->dump_macros = dump_none;
- opts->no_output = 0;
- opts->cplusplus = 0;
- opts->cplusplus_comments = 1;
-
- opts->verbose = 0;
- opts->objc = 0;
- opts->lang_asm = 0;
- opts->for_lint = 0;
- opts->chill = 0;
- opts->pedantic_errors = 0;
- opts->inhibit_warnings = 0;
- opts->warn_comments = 0;
- opts->warn_import = 1;
- opts->warnings_are_errors = 0;
-}
-
-static enum cpp_token
-null_underflow(cpp_reader * pfile __UNUSED__)
-{
- return CPP_EOF;
-}
-
-static int
-null_cleanup(cpp_buffer * pbuf __UNUSED__, cpp_reader * pfile __UNUSED__)
-{
- return 0;
-}
-
-static int
-macro_cleanup(cpp_buffer * pbuf, cpp_reader * pfile __UNUSED__)
-{
- HASHNODE *macro = (HASHNODE *) pbuf->data;
-
- if (macro->type == T_DISABLED)
- macro->type = T_MACRO;
- if (macro->type != T_MACRO || pbuf->buf != macro->value.defn->expansion)
- free(pbuf->buf);
- return 0;
-}
-
-static int
-file_cleanup(cpp_buffer * pbuf, cpp_reader * pfile __UNUSED__)
-{
- if (pbuf->buf)
- {
- free(pbuf->buf);
- pbuf->buf = 0;
- }
- return 0;
-}
-
-/* Assuming we have read '/'.
- * If this is the start of a comment (followed by '*' or '/'),
- * skip to the end of the comment, and return ' '.
- * Return EOF if we reached the end of file before the end of the comment.
- * If not the start of a comment, return '/'. */
-
-static int
-skip_comment(cpp_reader * pfile, long *linep)
-{
- int c = 0;
-
- while (PEEKC() == '\\' && PEEKN(1) == '\n')
- {
- if (linep)
- (*linep)++;
- FORWARD(2);
- }
- if (PEEKC() == '*')
- {
- FORWARD(1);
- for (;;)
- {
- int prev_c = c;
-
- c = GETC();
- if (c == EOF)
- return EOF;
- while (c == '\\' && PEEKC() == '\n')
- {
- if (linep)
- (*linep)++;
- FORWARD(1), c = GETC();
- }
- if (prev_c == '*' && c == '/')
- return ' ';
- if (c == '\n' && linep)
- (*linep)++;
- }
- }
- else if (PEEKC() == '/' && CPP_OPTIONS(pfile)->cplusplus_comments)
- {
- FORWARD(1);
- for (;;)
- {
- c = GETC();
- if (c == EOF)
- return ' '; /* Allow // to be terminated by EOF. */
- while (c == '\\' && PEEKC() == '\n')
- {
- FORWARD(1);
- c = GETC();
- if (linep)
- (*linep)++;
- }
- if (c == '\n')
- {
- /* Don't consider final '\n' to be part of comment. */
- FORWARD(-1);
- return ' ';
- }
- }
- }
- else
- return '/';
-}
-
-/* Skip whitespace \-newline and comments. Does not macro-expand. */
-void
-cpp_skip_hspace(cpp_reader * pfile)
-{
- while (1)
- {
- int c = PEEKC();
-
- if (c == EOF)
- return; /* FIXME */
- if (is_hor_space[c])
- {
- if ((c == '\f' || c == '\v') && CPP_PEDANTIC(pfile))
- cpp_pedwarn(pfile, "%s in preprocessing directive",
- c == '\f' ? "formfeed" : "vertical tab");
- FORWARD(1);
- }
- else if (c == '/')
- {
- FORWARD(1);
- c = skip_comment(pfile, NULL);
- if (c == '/')
- FORWARD(-1);
- if (c == EOF || c == '/')
- return;
- }
- else if (c == '\\' && PEEKN(1) == '\n')
- {
- FORWARD(2);
- }
- else if (c == '@' && CPP_BUFFER(pfile)->has_escapes
- && is_hor_space[PEEKN(1)])
- FORWARD(2);
- else
- return;
- }
-}
-
-/* Read the rest of the current line.
- * The line is appended to PFILE's output buffer. */
-
-static void
-copy_rest_of_line(cpp_reader * pfile)
-{
- struct cpp_options *opts = CPP_OPTIONS(pfile);
-
- for (;;)
- {
- int c = GETC();
- int nextc;
-
- switch (c)
- {
- case EOF:
- goto end_directive;
- case '\\':
- if (PEEKC() == '\n')
- {
- FORWARD(1);
- continue;
- }
- case '\'':
- case '\"':
- goto scan_directive_token;
- break;
- case '/':
- nextc = PEEKC();
- if (nextc == '*' || (opts->cplusplus_comments && nextc == '*'))
- goto scan_directive_token;
- break;
- case '\f':
- case '\v':
- if (CPP_PEDANTIC(pfile))
- cpp_pedwarn(pfile, "%s in preprocessing directive",
- c == '\f' ? "formfeed" : "vertical tab");
- break;
-
- case '\n':
- FORWARD(-1);
- goto end_directive;
- scan_directive_token:
- FORWARD(-1);
- cpp_get_token(pfile);
- continue;
- }
- CPP_PUTC(pfile, c);
- }
- end_directive:;
- CPP_NUL_TERMINATE(pfile);
-}
-
-void
-skip_rest_of_line(cpp_reader * pfile)
-{
- long old = CPP_WRITTEN(pfile);
-
- copy_rest_of_line(pfile);
- CPP_SET_WRITTEN(pfile, old);
-}
-
-/* Handle a possible # directive.
- * '#' has already been read. */
-
-static int
-handle_directive(cpp_reader * pfile)
-{
- int c;
- struct directive *kt;
- int ident_length;
- long after_ident = 0;
- unsigned char *ident, *line_end;
- long old_written = CPP_WRITTEN(pfile);
-
- cpp_skip_hspace(pfile);
-
- c = PEEKC();
- if (c >= '0' && c <= '9')
- {
- /* Handle # followed by a line number. */
- if (CPP_PEDANTIC(pfile))
- cpp_pedwarn(pfile, "`#' followed by integer");
- do_line(pfile, NULL, NULL, NULL);
- goto done_a_directive;
- }
- /* Now find the directive name. */
- CPP_PUTC(pfile, '#');
- parse_name(pfile, GETC());
- ident = pfile->token_buffer + old_written + 1;
- ident_length = CPP_PWRITTEN(pfile) - ident;
- if (ident_length == 0 && PEEKC() == '\n')
- {
- /* A line of just `#' becomes blank. */
- goto done_a_directive;
- }
- /*
- * Decode the keyword and call the appropriate expansion
- * routine, after moving the input pointer up to the next line.
- */
- for (kt = directive_table;; kt++)
- {
- if (kt->length <= 0)
- goto not_a_directive;
- if (kt->length == ident_length
- && !strncmp(kt->name, (const char *)ident, ident_length))
- break;
- }
-
- if (!kt->command_reads_line)
- {
- /* Nonzero means do not delete comments within the directive.
- * #define needs this when -traditional. */
- int comments = CPP_TRADITIONAL(pfile)
- && kt->traditional_comments;
- int save_put_out_comments =
- CPP_OPTIONS(pfile)->put_out_comments;
-
- CPP_OPTIONS(pfile)->put_out_comments = comments;
- after_ident = CPP_WRITTEN(pfile);
- copy_rest_of_line(pfile);
- CPP_OPTIONS(pfile)->put_out_comments = save_put_out_comments;
- }
- /* For #pragma and #define, we may want to pass through the directive.
- * Other directives may create output, but we don't want the directive
- * itself out, so we pop it now. For example #include may write a #line
- * command (see comment in do_include), and conditionals may emit
- * #failed ... #endfailed stuff. But note that popping the buffer
- * means the parameters to kt->func may point after pfile->limit
- * so these parameters are invalid as soon as something gets appended
- * to the token_buffer. */
-
- line_end = CPP_PWRITTEN(pfile);
- if (!kt->pass_thru && kt->type != T_DEFINE)
- CPP_SET_WRITTEN(pfile, old_written);
-
- (*kt->func) (pfile, kt, pfile->token_buffer + after_ident, line_end);
- if (kt->pass_thru
- || (kt->type == T_DEFINE
- && CPP_OPTIONS(pfile)->dump_macros == dump_definitions))
- {
- /* Just leave the entire #define in the output stack. */
- }
- else if (kt->type == T_DEFINE
- && CPP_OPTIONS(pfile)->dump_macros == dump_names)
- {
- unsigned char *p = pfile->token_buffer + old_written + 7; /* Skip "#define". */
-
- SKIP_WHITE_SPACE(p);
- while (is_idchar[*p])
- p++;
- pfile->limit = p;
- CPP_PUTC(pfile, '\n');
- }
- else if (kt->type == T_DEFINE)
- CPP_SET_WRITTEN(pfile, old_written);
- done_a_directive:
- return 1;
-
- not_a_directive:
- return 0;
-}
-
-/* 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(char *buf, char *limit, cpp_reader * pfile,
- struct directive *keyword)
-{
- unsigned keyword_length = keyword->length;
-
- CPP_RESERVE(pfile, 1 + keyword_length + (limit - buf));
- CPP_PUTC_Q(pfile, '#');
- CPP_PUTS_Q(pfile, keyword->name, keyword_length);
- if (limit != buf && buf[0] != ' ')
- CPP_PUTC_Q(pfile, ' ');
- CPP_PUTS_Q(pfile, buf, limit - buf);
-}
-
-/* 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;
- char *name;
- int length;
- int argno;
- char rest_args;
-};
-
-/* 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. */
-
-static DEFINITION *
-collect_expansion(cpp_reader * pfile, unsigned char *buf, unsigned char *limit,
- int nargs, struct arglist *arglist)
-{
- DEFINITION *defn;
- unsigned char *p, *lastp, *exp_p;
- reflist *endpat = NULL;
-
- /* Pointer to first nonspace after last ## seen. */
- unsigned char *concat = 0;
-
- /* Pointer to first nonspace after last single-# seen. */
- unsigned char *stringify = 0;
- 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 (limit < buf)
- abort();
-
- /* Find the beginning of the trailing whitespace. */
- p = buf;
- while (p < limit && is_space[limit[-1]])
- limit--;
-
- /* Allocate space for the text in the macro definition.
- * Leading and trailing whitespace chars need 2 bytes each.
- * Each other input char may or may not need 1 byte,
- * so this is an upper bound. The extra 5 are for invented
- * leading and trailing newline-marker and final null. */
- maxsize = (sizeof(DEFINITION) + (limit - p) + 5);
- /* Occurrences of '@' get doubled, so allocate extra space for them. */
- while (p < limit)
- if (*p++ == '@')
- maxsize++;
- defn = (DEFINITION *) xcalloc(1, maxsize);
-
- defn->nargs = nargs;
- exp_p = defn->expansion = (unsigned char *)defn + sizeof(DEFINITION);
- lastp = exp_p;
-
- p = buf;
-
- /* Add one initial space escape-marker to prevent accidental
- * token-pasting (often removed by macroexpand). */
- *exp_p++ = '@';
- *exp_p++ = ' ';
-
- if (limit - p >= 2 && p[0] == '#' && p[1] == '#')
- {
- cpp_error(pfile, "`##' at start of macro definition");
- p += 2;
- }
- /* Process the main body of the definition. */
- while (p < limit)
- {
- int skipped_arg = 0;
- unsigned char c = *p++;
-
- *exp_p++ = c;
-
- if (!CPP_TRADITIONAL(pfile))
- {
- switch (c)
- {
- case '\'':
- case '\"':
- if (expected_delimiter != '\0')
- {
- if (c == expected_delimiter)
- expected_delimiter = '\0';
- }
- else
- expected_delimiter = c;
- break;
-
- case '\\':
- if (p < limit && expected_delimiter)
- {
- /* In a string, backslash goes through
- * and makes next char ordinary. */
- *exp_p++ = *p++;
- }
- break;
-
- case '@':
- /* An '@' in a string or character constant stands for itself,
- * and does not need to be escaped. */
- if (!expected_delimiter)
- *exp_p++ = c;
- break;
-
- case '#':
- /* # is ordinary inside a string. */
- if (expected_delimiter)
- break;
- if (p < limit && *p == '#')
- {
- /* ##: 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++;
- /* Discard following whitespace. */
- SKIP_WHITE_SPACE(p);
- concat = p;
- if (p == limit)
- cpp_error(pfile, "`##' at end of macro definition");
- }
- else if (nargs >= 0)
- {
- /* Single #: stringify following argument ref.
- * Don't leave the # in the expansion. */
- exp_p--;
- SKIP_WHITE_SPACE(p);
- if (p == limit || !is_idstart[*p])
- cpp_error(pfile,
- "`#' operator is not followed by a macro argument name");
- else
- stringify = p;
- }
- break;
- }
- }
- else
- {
- /* In -traditional mode, recognize arguments inside strings and
- * 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--;
- p += 1;
- while (p < limit && !(p[-2] == '*' && p[-1] == '/'))
- p++;
- }
- break;
- }
- }
-
- /* Handle the start of a symbol. */
- if (is_idchar[c] && nargs > 0)
- {
- unsigned 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])
- {
- struct arglist *arg;
-
- for (arg = arglist; arg; arg = arg->next)
- {
- reflist *tpat;
-
- if (arg->name[0] == c
- && arg->length == id_len
- && strncmp((const char *)arg->name,
- (const char *)id_beg, id_len) == 0)
- {
- if (expected_delimiter
- && CPP_OPTIONS(pfile)->warn_stringify)
- {
- if (CPP_TRADITIONAL(pfile))
- {
- cpp_warning(pfile,
- "macro argument `%.*s' is stringified.",
- id_len, arg->name);
- }
- else
- {
- cpp_warning(pfile,
- "macro arg `%.*s' would be stringified with -traditional.",
- id_len, arg->name);
- }
- }
- /* If ANSI, don't actually substitute inside a string. */
- if (!CPP_TRADITIONAL(pfile) && expected_delimiter)
- break;
- /* make a pat node for this arg and append it to the end of
- * the pat list */
- tpat = (reflist *) xmalloc(sizeof(reflist));
-
- tpat->next = NULL;
- tpat->raw_before = concat == id_beg;
- tpat->raw_after = 0;
- tpat->rest_args = arg->rest_args;
- tpat->stringify = (CPP_TRADITIONAL(pfile)
- ? expected_delimiter != '\0'
- : stringify == id_beg);
-
- if (!endpat)
- defn->pattern = tpat;
- else
- endpat->next = tpat;
- endpat = tpat;
-
- tpat->argno = arg->argno;
- tpat->nchars = exp_p - lastp;
- {
- unsigned char *p1 = p;
-
- SKIP_WHITE_SPACE(p1);
- if (p1 + 2 <= limit && p1[0] == '#'
- && p1[1] == '#')
- tpat->raw_after = 1;
- }
- 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)
- {
- unsigned char *lim1 = p;
-
- p = id_beg;
- while (p != lim1)
- *exp_p++ = *p++;
- if (stringify == id_beg)
- cpp_error(pfile,
- "`#' operator should be followed by a macro argument name");
- }
- }
- }
-
- if (!CPP_TRADITIONAL(pfile) && expected_delimiter == 0)
- {
- /* If ANSI, put in a "@ " marker to prevent token pasting.
- * But not if "inside a string" (which in ANSI mode
- * happens only for -D option). */
- *exp_p++ = '@';
- *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();
-
- return defn;
-}
-
-/*
- * 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)
-
-/* Create a DEFINITION node from a #define directive. Arguments are
- * as for do_define. */
-static void
-create_definition(MACRODEF * mdef, unsigned char *buf, unsigned char *limit,
- cpp_reader * pfile, int predefinition)
-{
- unsigned char *bp; /* temp ptr into input buffer */
- unsigned char *symname; /* remember where symbol name starts */
- int sym_length; /* and how long it is */
- int rest_args = 0;
- long line, col;
- const char *file =
- CPP_BUFFER(pfile) ? CPP_BUFFER(pfile)->nominal_fname : "";
- DEFINITION *defn;
- int arglengths = 0; /* Accumulate lengths of arg names
- * plus number of args. */
-
- cpp_buf_line_and_col(CPP_BUFFER(pfile), &line, &col);
-
- bp = buf;
-
- while (is_hor_space[*bp])
- bp++;
-
- symname = bp; /* remember where it starts */
-
- sym_length = check_macro_name(pfile, bp, "macro");
- 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 = (char *)bp;
- temp->next = arg_ptrs;
- temp->argno = argno++;
- temp->rest_args = 0;
- arg_ptrs = temp;
-
- if (rest_args)
- cpp_pedwarn(pfile, "another parameter follows `%s'",
- rest_extension);
-
- if (!is_idstart[*bp])
- cpp_pedwarn(pfile, "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 ((unsigned)(limit - bp) > REST_EXTENSION_LENGTH &&
- strncmp(rest_extension, (const char *)bp,
- REST_EXTENSION_LENGTH) == 0)
- {
- rest_args = 1;
- temp->rest_args = 1;
- break;
- }
- }
- temp->length = (char *)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 != ')'))
- {
- cpp_error(pfile,
- "badly punctuated parameter list in `#define'");
- goto nope;
- }
- if (*bp == ',')
- {
- bp++;
- SKIP_WHITE_SPACE(bp);
- }
- if (bp >= limit)
- {
- cpp_error(pfile, "unterminated parameter list in `#define'");
- goto nope;
- }
- {
- struct arglist *otemp;
-
- for (otemp = temp->next; otemp; otemp = otemp->next)
- if (temp->length == otemp->length &&
- strncmp((const char *)temp->name,
- (const char *)otemp->name, temp->length) == 0)
- {
- char *name;
-
- name = (char *)alloca(temp->length + 1);
- strncpy(name, (const char *)temp->name, temp->length);
- name[temp->length] = '\0';
- cpp_error(pfile,
- "duplicate argument name `%s' in `#define'",
- name);
- goto nope;
- }
- }
- }
-
- ++bp; /* skip paren */
- SKIP_WHITE_SPACE(bp);
- /* now everything from bp before limit is the definition. */
- defn = collect_expansion(pfile, 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 = (unsigned char *)xmalloc(arglengths + 1);
- {
- struct arglist *temp;
- int i = 0;
-
- for (temp = arg_ptrs; temp; temp = temp->next)
- {
- memcpy(&defn->args.argnames[i], temp->name, temp->length);
- i += temp->length;
- if (temp->next)
- {
- 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
- {
- 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 '~':
- cpp_warning(pfile,
- "missing white space after `#define %.*s'",
- sym_length, symname);
- break;
-
- default:
- cpp_pedwarn(pfile,
- "missing white space after `#define %.*s'",
- sym_length, symname);
- break;
- }
- }
- }
- /* now everything from bp before limit is the definition. */
- defn = collect_expansion(pfile, bp, limit, -1, NULL);
- defn->args.argnames = (unsigned char *)"";
- }
-
- defn->line = line;
- defn->file = file;
-
- /* OP is null if this is a predefinition */
- defn->predefined = predefinition;
- mdef->defn = defn;
- mdef->symnam = (char *)symname;
- mdef->symlen = sym_length;
-
- return;
-
- nope:
- mdef->defn = 0;
-}
-
-/* Check a purported macro name SYMNAME, and yield its length.
- * USAGE is the kind of name this is intended for. */
-
-static int
-check_macro_name(cpp_reader * pfile, unsigned char *symname, const char *usage)
-{
- unsigned char *p;
- int sym_length;
-
- for (p = symname; is_idchar[*p]; p++)
- ;
- sym_length = p - symname;
- if (sym_length == 0)
- {
- cpp_error(pfile, "invalid %s name", usage);
- }
- else if (!is_idstart[*symname])
- {
- unsigned char *msg; /* what pain... */
-
- msg = (unsigned char *)alloca(sym_length + 1);
- memcpy(msg, symname, sym_length);
- msg[sym_length] = 0;
- cpp_error(pfile, "invalid %s name `%s'", usage, msg);
- }
- else
- {
- if (!strncmp((const char *)symname, "defined", 7) && sym_length == 7)
- cpp_error(pfile, "invalid %s name `defined'", usage);
- }
- return sym_length;
-}
-
-/*
- * return zero if two DEFINITIONs are isomorphic
- */
-static int
-compare_defs(DEFINITION * d1, DEFINITION * d2)
-{
- reflist *a1, *a2;
- unsigned char *p1 = d1->expansion;
- unsigned char *p2 = d2->expansion;
- int first = 1;
-
- if (d1->nargs != d2->nargs)
- return 1;
- if (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
- && !strncmp((const char *)p1, (const char *)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(int first, unsigned char *beg1, int len1,
- unsigned char *beg2, int len2, int last)
-{
- unsigned char *end1 = beg1 + len1;
- unsigned 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);
-}
-
-/* Process a #define command.
- * BUF points to the contents of the #define command, as a contiguous string.
- * LIMIT points to the first character past the end of the definition.
- * KEYWORD is the keyword-table entry for #define,
- * or NULL for a "predefined" macro. */
-
-static int
-do_define(cpp_reader * pfile, struct directive *keyword,
- unsigned char *buf, unsigned char *limit)
-{
- int hashcode;
- MACRODEF mdef;
- HASHNODE *hp;
-
- create_definition(&mdef, buf, limit, pfile, !keyword);
- if (!mdef.defn)
- return 1;
-
- hashcode = hashf(mdef.symnam, mdef.symlen, HASHSIZE);
-
- if ((hp = cpp_lookup(mdef.symnam, mdef.symlen, hashcode)))
- {
- int ok = 0;
-
- /* Redefining a precompiled key is ok. */
- if (hp->type == T_PCSTRING)
- ok = 1;
- /* 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 = !CPP_OPTIONS(pfile)->done_initializing;
- /* Print the warning if it's not ok. */
- if (!ok)
- {
- char *msg; /* what pain... */
-
- /* If we are passing through #define and #undef directives, do
- * that for this re-definition now. */
- if (CPP_OPTIONS(pfile)->debug_output && keyword)
- pass_thru_directive((char *)buf, (char *)limit, pfile, keyword);
-
- msg = (char *)alloca(mdef.symlen + 22);
- *msg = '`';
- memcpy(msg + 1, mdef.symnam, mdef.symlen);
- strcpy((msg + mdef.symlen + 1), "' redefined");
- cpp_pedwarn(pfile, msg);
- if (hp->type == T_MACRO)
- cpp_pedwarn_with_file_and_line(pfile, hp->value.defn->file,
- hp->value.defn->line,
- "this is the location of the previous definition",
- NULL, NULL, NULL);
- }
- /* Replace the old definition. */
- hp->type = T_MACRO;
- hp->value.defn = mdef.defn;
- }
- else
- {
- /* If we are passing through #define and #undef directives, do
- * that for this new definition now. */
- if (CPP_OPTIONS(pfile)->debug_output && keyword)
- pass_thru_directive((char *)buf, (char *)limit, pfile, keyword);
- install(mdef.symnam, mdef.symlen, T_MACRO, 0,
- (char *)mdef.defn, hashcode);
- }
-
- return 0;
-}
-
-/* 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').
- * `stringified_length' is 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. */
-
-/* raw and expanded are relative to ARG_BASE */
-#define ARG_BASE ((pfile)->token_buffer)
-
-struct argdata {
- /* Strings relative to pfile->token_buffer */
- long raw, expanded, stringified;
- int raw_length, expand_length;
- int stringified_length;
- char newlines;
- char use_count;
-};
-
-cpp_buffer *
-cpp_push_buffer(cpp_reader * pfile, unsigned char *buffer, long length)
-{
-#ifdef STATIC_BUFFERS
- cpp_buffer *buf = CPP_BUFFER(pfile);
-
- if (buf == pfile->buffer_stack)
- cpp_fatal("macro or `#include' recursion too deep");
- buf--;
- memset((char *)buf, 0, sizeof(cpp_buffer));
- CPP_BUFFER(pfile) = buf;
-#else
- cpp_buffer *buf = (cpp_buffer *) xmalloc(sizeof(cpp_buffer));
-
- memset((char *)buf, 0, sizeof(cpp_buffer));
- CPP_PREV_BUFFER(buf) = CPP_BUFFER(pfile);
- CPP_BUFFER(pfile) = buf;
-#endif
- buf->if_stack = pfile->if_stack;
- buf->cleanup = null_cleanup;
- buf->underflow = null_underflow;
- buf->buf = buf->cur = buffer;
- buf->alimit = buf->rlimit = buffer + length;
-
- return buf;
-}
-
-static cpp_buffer *
-cpp_pop_buffer(cpp_reader * pfile)
-{
- cpp_buffer *buf = CPP_BUFFER(pfile);
-
-#ifdef STATIC_BUFFERS
- (*buf->cleanup) (buf, pfile);
- return ++CPP_BUFFER(pfile);
-#else
- cpp_buffer *next_buf = CPP_PREV_BUFFER(buf);
-
- (*buf->cleanup) (buf, pfile);
- CPP_BUFFER(pfile) = next_buf;
- free(buf);
- return next_buf;
-#endif
-}
-
-/* Scan until CPP_BUFFER (PFILE) is exhausted into PFILE->token_buffer.
- * Pop the buffer when done. */
-
-static void
-cpp_scan_buffer(cpp_reader * pfile)
-{
- cpp_buffer *buffer = CPP_BUFFER(pfile);
-
- for (;;)
- {
- enum cpp_token token = cpp_get_token(pfile);
-
- if (token == CPP_EOF) /* Should not happen ... */
- break;
- if (token == CPP_POP && CPP_BUFFER(pfile) == buffer)
- {
- cpp_pop_buffer(pfile);
- break;
- }
- }
-}
-
-/*
- * Rescan a string (which may have escape marks) into pfile's buffer.
- * Place the result in pfile->token_buffer.
- *
- * The input is copied before it is scanned, so it is safe to pass
- * it something from the token_buffer that will get overwritten
- * (because it follows CPP_WRITTEN). This is used by do_include.
- */
-
-static void
-cpp_expand_to_buffer(cpp_reader * pfile, unsigned char *buf, int length)
-{
- cpp_buffer *ip;
- unsigned char *limit = buf + length;
- unsigned char *buf1;
-
- if (length < 0)
- abort();
-
- /* Set up the input on the input stack. */
-
- buf1 = (unsigned char *)alloca(length + 1);
- {
- unsigned char *p1 = buf;
- unsigned char *p2 = buf1;
-
- while (p1 != limit)
- *p2++ = *p1++;
- }
- buf1[length] = 0;
-
- ip = cpp_push_buffer(pfile, buf1, length);
- ip->has_escapes = 1;
-
- /* Scan the input, create the output. */
- cpp_scan_buffer(pfile);
-
- CPP_NUL_TERMINATE(pfile);
-}
-
-static void
-adjust_position(unsigned char *buf, unsigned char *limit, long *linep,
- long *colp)
-{
- while (buf < limit)
- {
- unsigned char ch = *buf++;
-
- if (ch == '\n')
- (*linep)++, (*colp) = 1;
- else
- (*colp)++;
- }
-}
-
-/* Move line_base forward, updating lineno and colno. */
-
-static void
-update_position(cpp_buffer * pbuf)
-{
- unsigned char *old_pos = pbuf->buf + pbuf->line_base;
- unsigned char *new_pos = pbuf->cur;
- struct parse_marker *mark;
-
- for (mark = pbuf->marks; mark; mark = mark->next)
- {
- if (pbuf->buf + mark->position < new_pos)
- new_pos = pbuf->buf + mark->position;
- }
- pbuf->line_base += new_pos - old_pos;
- adjust_position(old_pos, new_pos, &pbuf->lineno, &pbuf->colno);
-}
-
-void
-cpp_buf_line_and_col(cpp_buffer * pbuf, long *linep, long *colp)
-{
- long dummy;
-
- if (!colp)
- colp = &dummy;
- if (pbuf)
- {
- *linep = pbuf->lineno;
- *colp = pbuf->colno;
- adjust_position(pbuf->buf + pbuf->line_base, pbuf->cur, linep, colp);
- }
- else
- {
- *linep = 0;
- *colp = 0;
- }
-}
-
-/* Return the cpp_buffer that corresponds to a file (not a macro). */
-
-cpp_buffer *
-cpp_file_buffer(cpp_reader * pfile)
-{
- cpp_buffer *ip = CPP_BUFFER(pfile);
-
- for (; ip != CPP_NULL_BUFFER(pfile); ip = CPP_PREV_BUFFER(ip))
- if (ip->fname)
- return ip;
- return NULL;
-}
-
-static long
-count_newlines(unsigned char *buf, unsigned char *limit)
-{
- long count = 0;
-
- while (buf < limit)
- {
- unsigned char ch = *buf++;
-
- if (ch == '\n')
- count++;
- }
- return count;
-}
-
-/*
- * write out a #line command, 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_command(cpp_reader * pfile, int conditional,
- enum file_change_code file_change)
-{
- long line, col;
- cpp_buffer *ip = CPP_BUFFER(pfile);
-
- if (CPP_OPTIONS(pfile)->no_line_commands
- || !ip->fname || CPP_OPTIONS(pfile)->no_output)
- {
- return;
- }
- update_position(ip);
- line = CPP_BUFFER(pfile)->lineno;
- col = CPP_BUFFER(pfile)->colno;
- adjust_position(CPP_LINE_BASE(ip), ip->cur, &line, &col);
-
- if (conditional)
- {
- if (line == pfile->lineno)
- return;
-
- /* If the inherited line number is a little too small,
- * output some newlines instead of a #line command. */
- if (line > pfile->lineno && line < pfile->lineno + 8)
- {
- CPP_RESERVE(pfile, 20);
- while (line > pfile->lineno)
- {
- CPP_PUTC_Q(pfile, '\n');
- pfile->lineno++;
- }
- return;
- }
- }
-
- CPP_RESERVE(pfile, 4 * strlen(ip->nominal_fname) + 50);
- {
-#ifdef OUTPUT_LINE_COMMANDS
- static char sharp_line[] = "#line ";
-
-#else
- static char sharp_line[] = "# ";
-
-#endif
- CPP_PUTS_Q(pfile, sharp_line, sizeof(sharp_line) - 1);
- }
-
- sprintf((char *)CPP_PWRITTEN(pfile), "%d ", (int)line);
- CPP_ADJUST_WRITTEN(pfile, strlen((char *)CPP_PWRITTEN(pfile)));
-
- quote_string(pfile, ip->nominal_fname);
- if (file_change != same_file)
- {
- CPP_PUTC_Q(pfile, ' ');
- CPP_PUTC_Q(pfile, file_change == enter_file ? '1' : '2');
- }
- /* Tell cc1 if following text comes from a system header file. */
- if (ip->system_header_p)
- {
- CPP_PUTC_Q(pfile, ' ');
- CPP_PUTC_Q(pfile, '3');
- }
-#ifndef NO_IMPLICIT_EXTERN_C
- /* Tell cc1plus if following text should be treated as C. */
- if (ip->system_header_p == 2 && CPP_OPTIONS(pfile)->cplusplus)
- {
- CPP_PUTC_Q(pfile, ' ');
- CPP_PUTC_Q(pfile, '4');
- }
-#endif
- CPP_PUTC_Q(pfile, '\n');
- pfile->lineno = line;
-}
-
-/*
- * Parse a macro argument and append the info on PFILE's token_buffer.
- * REST_ARGS means to absorb the rest of the args.
- * Return nonzero to indicate a syntax error.
- */
-
-static enum cpp_token
-macarg(cpp_reader * pfile, int rest_args)
-{
- int paren = 0;
- enum cpp_token token;
- char save_put_out_comments =
- CPP_OPTIONS(pfile)->put_out_comments;
-
- CPP_OPTIONS(pfile)->put_out_comments = 0;
-
- token = CPP_OTHER;
- /* Try to parse as much of the argument as exists at this
- * input stack level. */
- pfile->no_macro_expand++;
- for (;;)
- {
- token = cpp_get_token(pfile);
- switch (token)
- {
- case CPP_EOF:
- goto done;
- case CPP_POP:
- /* If we've hit end of file, it's an error (reported by caller).
- * Ditto if it's the end of cpp_expand_to_buffer text.
- * If we've hit end of macro, just continue. */
- if (!CPP_IS_MACRO_BUFFER(CPP_BUFFER(pfile)))
- goto done;
- break;
- case CPP_LPAREN:
- paren++;
- break;
- case CPP_RPAREN:
- if (--paren < 0)
- goto found;
- break;
- case CPP_COMMA:
- /* if we've returned to lowest level and
- * we aren't absorbing all args */
- if (paren == 0 && rest_args == 0)
- goto found;
- break;
- found:
- /* Remove ',' or ')' from argument buffer. */
- CPP_ADJUST_WRITTEN(pfile, -1);
- goto done;
- default:;
- }
- }
-
- done:
- CPP_OPTIONS(pfile)->put_out_comments = save_put_out_comments;
- pfile->no_macro_expand--;
-
- return token;
-}
-
-/* Turn newlines to spaces in the string of length LENGTH at START,
- * except inside of string constants.
- * The string is copied into itself with its beginning staying fixed. */
-
-static int
-change_newlines(unsigned char *start, int length)
-{
- unsigned char *ibp;
- unsigned char *obp;
- unsigned char *limit;
- int c;
-
- ibp = start;
- limit = start + length;
- obp = start;
-
- while (ibp < limit)
- {
- *obp++ = c = *ibp++;
- switch (c)
- {
-
- 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;
- if (c == '\n' && quotec == '\'')
- break;
- }
- }
- break;
- }
- }
-
- return obp - start;
-}
-
-static struct tm *
-timestamp(cpp_reader * pfile)
-{
- if (!pfile->timebuf)
- {
- time_t t = time((time_t *) 0);
-
- pfile->timebuf = localtime(&t);
- }
- return pfile->timebuf;
-}
-
-static const char *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(HASHNODE * hp, cpp_reader * pfile)
-{
- const char *buf;
- char *bufx;
- int len;
- int true_indepth;
- cpp_buffer *ip = NULL;
- struct tm *timebuf;
-
- int paren = 0; /* For special `defined' keyword */
-
- for (ip = CPP_BUFFER(pfile);; ip = CPP_PREV_BUFFER(ip))
- {
- if (!ip)
- {
- cpp_error(pfile, "cccp error: not in any file?!");
- return; /* the show must go on */
- }
- if (ip->fname)
- break;
- }
-
- switch (hp->type)
- {
- case T_FILE:
- case T_BASE_FILE:
- {
- const char *string;
-
- if (hp->type == T_BASE_FILE)
- {
- while (CPP_PREV_BUFFER(ip))
- ip = CPP_PREV_BUFFER(ip);
- }
- string = ip->nominal_fname;
-
- if (!string)
- string = "";
- CPP_RESERVE(pfile, 3 + 4 * strlen(string));
- quote_string(pfile, string);
- return;
- }
-
- case T_INCLUDE_LEVEL:
- true_indepth = 0;
- for (ip = CPP_BUFFER(pfile); ip; ip = CPP_PREV_BUFFER(ip))
- if (ip->fname)
- true_indepth++;
-
- bufx = (char *)alloca(8); /* Eight bytes ought to be more than enough */
- sprintf(bufx, "%d", true_indepth - 1);
- buf = bufx;
- break;
-
- case T_VERSION:
- bufx = (char *)alloca(3 + strlen(version_string));
- sprintf(bufx, "\"%s\"", version_string);
- buf = bufx;
- 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
-
- case T_WCHAR_TYPE:
- buf = CPP_WCHAR_TYPE(pfile);
- break;
-
- case T_USER_LABEL_PREFIX_TYPE:
- buf = USER_LABEL_PREFIX;
- break;
-
- case T_REGISTER_PREFIX_TYPE:
- buf = REGISTER_PREFIX;
- break;
-
- case T_CONST:
- bufx = (char *)alloca(4 * sizeof(int));
- sprintf(bufx, "%d", hp->value.ival);
- buf = bufx;
- break;
-
- case T_SPECLINE:
- {
- long line = ip->lineno;
- long col = ip->colno;
-
- adjust_position(CPP_LINE_BASE(ip), ip->cur, &line, &col);
-
- bufx = (char *)alloca(10);
- sprintf(bufx, "%d", (int)line);
- buf = bufx;
- }
- break;
-
- case T_DATE:
- case T_TIME:
- bufx = (char *)alloca(20);
- timebuf = timestamp(pfile);
- if (hp->type == T_DATE)
- sprintf(bufx, "\"%s %2d %4d\"", monthnames[timebuf->tm_mon],
- timebuf->tm_mday, timebuf->tm_year + 1900);
- else
- sprintf(bufx, "\"%02d:%02d:%02d\"", timebuf->tm_hour,
- timebuf->tm_min, timebuf->tm_sec);
- buf = bufx;
- break;
-
- case T_SPEC_DEFINED:
- buf = " 0 "; /* Assume symbol is not defined */
- ip = CPP_BUFFER(pfile);
- SKIP_WHITE_SPACE(ip->cur);
- if (*ip->cur == '(')
- {
- paren++;
- ip->cur++; /* Skip over the paren */
- SKIP_WHITE_SPACE(ip->cur);
- }
- if (!is_idstart[*ip->cur])
- goto oops;
- if ((hp = cpp_lookup((const char *)ip->cur, -1, -1)))
- {
- buf = " 1 ";
- }
- while (is_idchar[*ip->cur])
- ++ip->cur;
- SKIP_WHITE_SPACE(ip->cur);
- if (paren)
- {
- if (*ip->cur != ')')
- goto oops;
- ++ip->cur;
- }
- break;
-
- oops:
-
- cpp_error(pfile, "`defined' without an identifier");
- break;
-
- default:
- cpp_error(pfile, "cccp error: invalid special hash type"); /* time for gdb */
- abort();
- }
- len = strlen(buf);
- CPP_RESERVE(pfile, len + 1);
- CPP_PUTS_Q(pfile, buf, len);
- CPP_NUL_TERMINATE_Q(pfile);
-
- return;
-}
-
-/* Initialize the built-in macros. */
-
-static void
-initialize_builtins(cpp_reader * pfile)
-{
- install("__LINE__", -1, T_SPECLINE, 0, 0, -1);
- install("__DATE__", -1, T_DATE, 0, 0, -1);
- install("__FILE__", -1, T_FILE, 0, 0, -1);
- install("__BASE_FILE__", -1, T_BASE_FILE, 0, 0, -1);
- install("__INCLUDE_LEVEL__", -1, T_INCLUDE_LEVEL, 0, 0, -1);
- install("__VERSION__", -1, T_VERSION, 0, 0, -1);
-#ifndef NO_BUILTIN_SIZE_TYPE
- install("__SIZE_TYPE__", -1, T_SIZE_TYPE, 0, 0, -1);
-#endif
-#ifndef NO_BUILTIN_PTRDIFF_TYPE
- install("__PTRDIFF_TYPE__ ", -1, T_PTRDIFF_TYPE, 0, 0, -1);
-#endif
- install("__WCHAR_TYPE__", -1, T_WCHAR_TYPE, 0, 0, -1);
- install("__USER_LABEL_PREFIX__", -1, T_USER_LABEL_PREFIX_TYPE, 0, 0, -1);
- install("__REGISTER_PREFIX__", -1, T_REGISTER_PREFIX_TYPE, 0, 0, -1);
- install("__TIME__", -1, T_TIME, 0, 0, -1);
- if (!CPP_TRADITIONAL(pfile))
- install("__STDC__", -1, T_CONST, STDC_VALUE, 0, -1);
- if (CPP_OPTIONS(pfile)->objc)
- install("__OBJC__", -1, T_CONST, 1, 0, -1);
-/* This is supplied using a -D by the compiler driver
- * so that it is present only when truly compiling with GNU C. */
-/* install ("__GNUC__", -1, T_CONST, 2, 0, -1); */
-
- if (CPP_OPTIONS(pfile)->debug_output)
- {
- char directive[2048];
- struct directive *dp = &directive_table[0];
- struct tm *timebuf = timestamp(pfile);
- cpp_buffer *pbuffer = CPP_BUFFER(pfile);
-
- while (CPP_PREV_BUFFER(pbuffer))
- pbuffer = CPP_PREV_BUFFER(pbuffer);
- sprintf(directive, " __BASE_FILE__ \"%s\"\n", pbuffer->nominal_fname);
- output_line_command(pfile, 0, same_file);
- pass_thru_directive(directive, &directive[strlen(directive)], pfile,
- dp);
-
- sprintf(directive, " __VERSION__ \"%s\"\n", version_string);
- output_line_command(pfile, 0, same_file);
- pass_thru_directive(directive, &directive[strlen(directive)], pfile,
- dp);
-
-#ifndef NO_BUILTIN_SIZE_TYPE
- sprintf(directive, " __SIZE_TYPE__ %s\n", SIZE_TYPE);
- output_line_command(pfile, 0, same_file);
- pass_thru_directive(directive, &directive[strlen(directive)], pfile,
- dp);
-#endif
-
-#ifndef NO_BUILTIN_PTRDIFF_TYPE
- sprintf(directive, " __PTRDIFF_TYPE__ %s\n", PTRDIFF_TYPE);
- output_line_command(pfile, 0, same_file);
- pass_thru_directive(directive, &directive[strlen(directive)], pfile,
- dp);
-#endif
-
- sprintf(directive, " __WCHAR_TYPE__ %s\n", CPP_WCHAR_TYPE(pfile));
- output_line_command(pfile, 0, same_file);
- pass_thru_directive(directive, &directive[strlen(directive)], pfile,
- dp);
-
- sprintf(directive, " __DATE__ \"%s %2d %4d\"\n",
- monthnames[timebuf->tm_mon],
- timebuf->tm_mday, timebuf->tm_year + 1900);
- output_line_command(pfile, 0, same_file);
- pass_thru_directive(directive, &directive[strlen(directive)], pfile,
- dp);
-
- sprintf(directive, " __TIME__ \"%02d:%02d:%02d\"\n",
- timebuf->tm_hour, timebuf->tm_min, timebuf->tm_sec);
- output_line_command(pfile, 0, same_file);
- pass_thru_directive(directive, &directive[strlen(directive)], pfile,
- dp);
-
- if (!CPP_TRADITIONAL(pfile))
- {
- sprintf(directive, " __STDC__ 1");
- output_line_command(pfile, 0, same_file);
- pass_thru_directive(directive, &directive[strlen(directive)],
- pfile, dp);
- }
- if (CPP_OPTIONS(pfile)->objc)
- {
- sprintf(directive, " __OBJC__ 1");
- output_line_command(pfile, 0, same_file);
- pass_thru_directive(directive, &directive[strlen(directive)],
- pfile, dp);
- }
- }
-}
-
-/* Return 1 iff a token ending in C1 followed directly by a token C2
- * could cause mis-tokenization. */
-
-static int
-unsafe_chars(int c1, int c2)
-{
- switch (c1)
- {
- case '+':
- case '-':
- if (c2 == c1 || c2 == '=')
- return 1;
- goto letter;
- case '.':
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
- case 'e':
- case 'E':
- if (c2 == '-' || c2 == '+')
- return 1; /* could extend a pre-processing number */
- goto letter;
- case 'L':
- if (c2 == '\'' || c2 == '\"')
- return 1; /* Could turn into L"xxx" or L'xxx'. */
- goto letter;
- letter:
- case '_':
- case 'a':
- case 'b':
- case 'c':
- case 'd':
- 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 'F':
- case 'G':
- case 'H':
- case 'I':
- case 'J':
- case 'K':
- 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':
- /* We're in the middle of either a name or a pre-processing number. */
- return (is_idchar[c2] || c2 == '.');
- case '<':
- case '>':
- case '!':
- case '%':
- case '#':
- case ':':
- case '^':
- case '&':
- case '|':
- case '*':
- case '/':
- case '=':
- return (c2 == c1 || c2 == '=');
- }
- return 0;
-}
-
-/* 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(cpp_reader * pfile, HASHNODE * hp)
-{
- int nargs;
- DEFINITION *defn = hp->value.defn;
- unsigned char *xbuf;
- long start_line, start_column;
- int xbuf_len;
- struct argdata *args;
- long old_written = CPP_WRITTEN(pfile);
-
- int rest_args, rest_zero;
- int i;
-
- pfile->output_escapes++;
- cpp_buf_line_and_col(cpp_file_buffer(pfile), &start_line, &start_column);
-
- rest_zero = 0;
- args = NULL;
- nargs = defn->nargs;
-
- if (nargs >= 0)
- {
- enum cpp_token token;
-
- token = CPP_OTHER;
-
- args = (struct argdata *)alloca((nargs + 1) * sizeof(struct argdata));
-
- for (i = 0; i < nargs; i++)
- {
- args[i].raw = args[i].expanded = 0;
- args[i].raw_length = 0;
- args[i].expand_length = args[i].stringified_length = -1;
- 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;
- rest_args = 0;
- FORWARD(1); /* Discard the open-parenthesis before the first arg. */
- do
- {
- 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;
- args[i].raw = CPP_WRITTEN(pfile);
- token = macarg(pfile, rest_args);
- args[i].raw_length = CPP_WRITTEN(pfile) - args[i].raw;
- args[i].newlines = 0; /* FIXME */
- }
- else
- token = macarg(pfile, 0);
- if (token == CPP_EOF || token == CPP_POP)
- {
- cpp_error_with_line(pfile, start_line, start_column,
- "unterminated macro call");
- return;
- }
- i++;
- }
- while (token == CPP_COMMA);
-
- /* If we got one arg but it was just whitespace, call that 0 args. */
- if (i == 1)
- {
- unsigned char *bp = ARG_BASE + args[0].raw;
- unsigned 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. */
- if (nargs == 0 && i > 0)
- {
- cpp_error(pfile, "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 && CPP_TRADITIONAL(pfile));
- /* the rest args token is allowed to absorb 0 tokens */
- else if (i == nargs - 1 && defn->rest_args)
- rest_zero = 1;
- else if (i == 0)
- cpp_error(pfile, "macro `%s' used without args", hp->name);
- else if (i == 1)
- cpp_error(pfile, "macro `%s' used with just one arg", hp->name);
- else
- cpp_error(pfile, "macro `%s' used with only %d args",
- hp->name, i);
- }
- else if (i > nargs)
- {
- cpp_error(pfile,
- "macro `%s' used with too many (%d) args", hp->name, i);
- }
- }
- /* 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
- {
- unsigned char *exp = defn->expansion;
- int offset; /* offset in expansion,
- * copied a piece at a time */
- int totlen; /* total amount of exp buffer filled so far */
- 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; ap = ap->next)
- {
- if (ap->stringify)
- {
- struct argdata *arg = &args[ap->argno];
-
- /* Stringify it it hasn't already been */
- if (arg->stringified_length < 0)
- {
- int arglen = arg->raw_length;
- int escaped = 0;
- int in_string = 0;
- int c;
-
- /* Initially need_space is -1. Otherwise, 1 means the
- * previous character was a space, but we suppressed it;
- * 0 means the previous character was a non-space. */
- int need_space = -1;
-
- i = 0;
- arg->stringified = CPP_WRITTEN(pfile);
- if (!CPP_TRADITIONAL(pfile))
- CPP_PUTC(pfile, '\"'); /* insert beginning quote */
- for (; i < arglen; i++)
- {
- c = (ARG_BASE + arg->raw)[i];
-
- if (!in_string)
- {
- /* Internal sequences of whitespace are replaced by
- * one space except within an string or char token. */
- if (is_space[c])
- {
- if (CPP_WRITTEN(pfile) > arg->stringified
- && (CPP_PWRITTEN(pfile))[-1] == '@')
- {
- /* "@ " escape markers are removed */
- CPP_ADJUST_WRITTEN(pfile, -1);
- continue;
- }
- if (need_space == 0)
- need_space = 1;
- continue;
- }
- else if (need_space > 0)
- CPP_PUTC(pfile, ' ');
- need_space = 0;
- }
- if (escaped)
- escaped = 0;
- else
- {
- if (c == '\\')
- escaped = 1;
- if (in_string)
- {
- if (c == in_string)
- in_string = 0;
- }
- else if (c == '\"' || c == '\'')
- in_string = c;
- }
-
- /* Escape these chars */
- if (c == '\"' || (in_string && c == '\\'))
- CPP_PUTC(pfile, '\\');
- if (isprint(c))
- CPP_PUTC(pfile, c);
- else
- {
- CPP_RESERVE(pfile, 4);
- sprintf((char *)CPP_PWRITTEN(pfile), "\\%03o",
- (unsigned int)c);
- CPP_ADJUST_WRITTEN(pfile, 4);
- }
- }
- if (!CPP_TRADITIONAL(pfile))
- CPP_PUTC(pfile, '\"'); /* insert ending quote */
- arg->stringified_length
- = CPP_WRITTEN(pfile) - arg->stringified;
- }
- xbuf_len += args[ap->argno].stringified_length;
- }
- else if (ap->raw_before || ap->raw_after || CPP_TRADITIONAL(pfile))
- /* 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].expand_length < 0)
- {
- args[ap->argno].expanded = CPP_WRITTEN(pfile);
- cpp_expand_to_buffer(pfile,
- ARG_BASE + args[ap->argno].raw,
- args[ap->argno].raw_length);
-
- args[ap->argno].expand_length
- = CPP_WRITTEN(pfile) - args[ap->argno].expanded;
- }
- /* Add 4 for two newline-space markers to prevent
- * token concatenation. */
- xbuf_len += args[ap->argno].expand_length + 4;
- }
- if (args[ap->argno].use_count < 10)
- args[ap->argno].use_count++;
- }
-
- xbuf = (unsigned 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;
- last_ap = ap, ap = ap->next)
- {
- 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)
- || (last_ap && last_ap->rest_args && last_ap->raw_after)))
- {
- /* 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)
- {
- memcpy(xbuf + totlen, ARG_BASE + arg->stringified,
- arg->stringified_length);
- totlen += arg->stringified_length;
- }
- else if (ap->raw_before || ap->raw_after || CPP_TRADITIONAL(pfile))
- {
- unsigned char *p1 = ARG_BASE + arg->raw;
- unsigned char *l1 = p1 + arg->raw_length;
-
- if (ap->raw_before)
- {
- while (p1 != l1 && is_space[*p1])
- p1++;
- while (p1 != l1 && is_idchar[*p1])
- xbuf[totlen++] = *p1++;
- }
- if (ap->raw_after)
- {
- /* 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] == '-')
- {
- unsigned 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;
- }
- }
- memcpy(xbuf + totlen, p1, l1 - p1);
- totlen += l1 - p1;
- }
- else
- {
- unsigned char *expanded = ARG_BASE + arg->expanded;
-
- if (!ap->raw_before && totlen > 0 && arg->expand_length
- && !CPP_TRADITIONAL(pfile)
- && unsafe_chars(xbuf[totlen - 1], expanded[0]))
- {
- xbuf[totlen++] = '@';
- xbuf[totlen++] = ' ';
- }
- memcpy(xbuf + totlen, expanded, arg->expand_length);
- totlen += arg->expand_length;
-
- if (!ap->raw_after && totlen > 0 && offset < defn->length
- && !CPP_TRADITIONAL(pfile)
- && unsafe_chars(xbuf[totlen - 1], exp[offset]))
- {
- xbuf[totlen++] = '@';
- 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;
- arg->expand_length
- = change_newlines(expanded, arg->expand_length);
- }
- }
-
- 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 && last_ap->rest_args
- && last_ap->raw_after))
- xbuf[totlen++] = exp[i];
- }
-
- xbuf[totlen] = 0;
- xbuf_len = totlen;
-
- }
-
- pfile->output_escapes--;
-
- /* Now put the expansion on the input stack
- * so our caller will commence reading from it. */
- push_macro_expansion(pfile, xbuf, xbuf_len, hp);
- CPP_BUFFER(pfile)->has_escapes = 1;
-
- /* Pop the space we've used in the token_buffer for argument expansion. */
- CPP_SET_WRITTEN(pfile, old_written);
-
- /* Recursive macro use sometimes works traditionally.
- * #define foo(x,y) bar (x (y,0), y)
- * foo (foo, baz) */
-
- if (!CPP_TRADITIONAL(pfile))
- hp->type = T_DISABLED;
-}
-
-static void
-push_macro_expansion(cpp_reader * pfile, unsigned char *xbuf, int xbuf_len,
- HASHNODE * hp)
-{
- cpp_buffer *mbuf = cpp_push_buffer(pfile, xbuf, xbuf_len);
-
- mbuf->cleanup = macro_cleanup;
- mbuf->data = hp;
-
- /* The first chars of the expansion should be a "@ " added by
- * collect_expansion. This is to prevent accidental token-pasting
- * between the text preceding the macro invocation, and the macro
- * expansion text.
- *
- * We would like to avoid adding unneeded spaces (for the sake of
- * tools that use cpp, such as imake). In some common cases we can
- * tell that it is safe to omit the space.
- *
- * The character before the macro invocation cannot have been an
- * idchar (or else it would have been pasted with the idchars of
- * the macro name). Therefore, if the first non-space character
- * of the expansion is an idchar, we do not need the extra space
- * to prevent token pasting.
- *
- * Also, we don't need the extra space if the first char is '(',
- * or some other (less common) characters. */
-
- if (xbuf[0] == '@' && xbuf[1] == ' '
- && (is_idchar[xbuf[2]] || xbuf[2] == '(' || xbuf[2] == '\''
- || xbuf[2] == '\"'))
- mbuf->cur += 2;
-}
-
-/* Like cpp_get_token, except that it does not read past end-of-line.
- * Also, horizontal space is skipped, and macros are popped. */
-
-static enum cpp_token
-get_directive_token(cpp_reader * pfile)
-{
- for (;;)
- {
- long old_written = CPP_WRITTEN(pfile);
- enum cpp_token token;
-
- cpp_skip_hspace(pfile);
- if (PEEKC() == '\n')
- return CPP_VSPACE;
- token = cpp_get_token(pfile);
- switch (token)
- {
- case CPP_POP:
- if (!CPP_IS_MACRO_BUFFER(CPP_BUFFER(pfile)))
- return token;
- /* ... else fall though ... */
- case CPP_HSPACE:
- case CPP_COMMENT:
- CPP_SET_WRITTEN(pfile, old_written);
- break;
- default:
- return token;
- }
- }
-}
-
-/* Handle #include and #import.
- * This function expects to see "fname" or <fname> on the input.
- *
- * The input is normally in part of the output_buffer following
- * CPP_WRITTEN, and will get overwritten by output_line_command.
- * I.e. in input file specification has been popped by handle_directive.
- * This is safe. */
-
-static int
-do_include(cpp_reader * pfile, struct directive *keyword,
- unsigned char *unused1 __UNUSED__, unsigned char *unused2 __UNUSED__)
-{
- int importing = (keyword->type == T_IMPORT);
- int skip_dirs = (keyword->type == T_INCLUDE_NEXT);
- char *fname; /* Dynamically allocated fname buffer */
- unsigned char *fbeg, *fend; /* Beginning and end of fname */
- enum cpp_token token;
-
- /* Chain of dirs to search */
- file_name_list *search_start = CPP_OPTIONS(pfile)->include;
- file_name_list dsp[1]; /* First in chain, if #include "..." */
- file_name_list *searchptr = 0;
- long old_written = CPP_WRITTEN(pfile);
- int flen;
- int f; /* file number */
- int angle_brackets = 0; /* 0 for "...", 1 for <...> */
-
- f = -1; /* JF we iz paranoid! */
-
- if (importing && CPP_OPTIONS(pfile)->warn_import
- && !CPP_OPTIONS(pfile)->inhibit_warnings
- && !CPP_BUFFER(pfile)->system_header_p && !pfile->import_warning)
- {
- pfile->import_warning = 1;
- cpp_warning(pfile, "using `#import' is not recommended");
- fprintf(stderr,
- "The fact that a certain header file need not be processed more than once\n");
- fprintf(stderr,
- "should be indicated in the header file, not where it is used.\n");
- fprintf(stderr,
- "The best way to do this is with a conditional of this form:\n\n");
- fprintf(stderr, " #ifndef _FOO_H_INCLUDED\n");
- fprintf(stderr, " #define _FOO_H_INCLUDED\n");
- fprintf(stderr, " ... <real contents of file> ...\n");
- fprintf(stderr, " #endif /* Not _FOO_H_INCLUDED */\n\n");
- fprintf(stderr, "Then users can use `#include' any number of times.\n");
- fprintf(stderr,
- "GNU C automatically avoids processing the file more than once\n");
- fprintf(stderr, "when it is equipped with such a conditional.\n");
- }
- pfile->parsing_include_directive++;
- token = get_directive_token(pfile);
- pfile->parsing_include_directive--;
-
- if (token == CPP_STRING)
- {
- /* FIXME - check no trailing garbage */
- fbeg = pfile->token_buffer + old_written + 1;
- fend = CPP_PWRITTEN(pfile) - 1;
- if (fbeg[-1] == '<')
- {
- angle_brackets = 1;
- /* If -I-, start with the first -I dir after the -I-. */
- if (CPP_OPTIONS(pfile)->first_bracket_include)
- search_start = CPP_OPTIONS(pfile)->first_bracket_include;
- }
- /* If -I- was specified, don't search current dir, only spec'd ones. */
- else if (!CPP_OPTIONS(pfile)->ignore_srcdir)
- {
- cpp_buffer *fp;
-
- /* We have "filename". Figure out directory this source
- * file is coming from and put it on the front of the list. */
-
- for (fp = CPP_BUFFER(pfile); fp; fp = CPP_PREV_BUFFER(fp))
- {
- int n;
- const char *ep, *nam;
-
- if ((nam = fp->nominal_fname))
- {
- /* Found a named file. Figure out dir of the file,
- * and put it in front of the search list. */
- dsp[0].next = search_start;
- search_start = dsp;
-#ifndef VMS
- ep = strrchr(nam, '/');
-#else /* VMS */
- ep = strrchr(nam, ']');
- if (!ep)
- ep = strrchr(nam, '>');
- if (!ep)
- ep = strrchr(nam, ':');
- if (ep)
- ep++;
-#endif /* VMS */
- if (ep)
- {
- n = ep - nam;
- dsp[0].fname = (char *)alloca(n + 1);
- strncpy(dsp[0].fname, nam, n);
- dsp[0].fname[n] = '\0';
- if (n + INCLUDE_LEN_FUDGE > pfile->max_include_len)
- pfile->max_include_len = n + INCLUDE_LEN_FUDGE;
- }
- else
- {
- dsp[0].fname = 0; /* Current directory */
- }
- dsp[0].got_name_map = 0;
- break;
- }
- }
- }
- }
- else
- {
- cpp_error(pfile,
- "`#%s' expects \"FILENAME\" or <FILENAME>", keyword->name);
- CPP_SET_WRITTEN(pfile, old_written);
- skip_rest_of_line(pfile);
- return 0;
- }
-
- *fend = 0;
-
- token = get_directive_token(pfile);
- if (token != CPP_VSPACE)
- {
- cpp_error(pfile, "junk at end of `#include'");
- while (token != CPP_VSPACE && token != CPP_EOF && token != CPP_POP)
- token = get_directive_token(pfile);
- }
- /* For #include_next, skip in the search path
- * past the dir in which the containing file was found. */
- if (skip_dirs)
- {
- cpp_buffer *fp;
-
- for (fp = CPP_BUFFER(pfile); fp; fp = CPP_PREV_BUFFER(fp))
- if (fp->fname)
- {
- /* 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 == SELF_DIR_DUMMY)
- search_start = CPP_OPTIONS(pfile)->include;
- else if (fp->dir)
- search_start = fp->dir->next;
- break;
- }
- }
- CPP_SET_WRITTEN(pfile, old_written);
-
- flen = fend - fbeg;
-
- if (flen == 0)
- {
- cpp_error(pfile, "empty file name in `#%s'", keyword->name);
- return 0;
- }
- /* Allocate this permanently, because it gets stored in the definitions
- * of macros. */
- fname = (char *)xmalloc(pfile->max_include_len + flen + 4);
- /* + 2 above for slash and terminating null. */
- /* + 2 added for '.h' on VMS (to support '#include filename') */
-
- /* If specified file name is absolute, just open it. */
-
-#ifndef __EMX__
- if (*fbeg == '/')
-#else
- if (_fnisabs(fbeg))
-#endif
- {
- strncpy(fname, (const char *)fbeg, flen);
- fname[flen] = 0;
- if (redundant_include_p(pfile, fname))
- return 0;
- if (importing)
- f = lookup_import(pfile, fname, NULL);
- else
- f = open_include_file(pfile, fname, NULL);
- if (f == -2)
- return 0; /* Already included this file */
- }
- else
- {
- /* Search directory path, trying to open the file.
- * Copy each filename tried into FNAME. */
-
- for (searchptr = search_start; searchptr; searchptr = searchptr->next)
- {
- if (searchptr->fname)
- {
- /* The empty string in a search path is ignored.
- * This makes it possible to turn off entirely
- * a standard piece of the list. */
- if (searchptr->fname[0] == 0)
- continue;
- strcpy(fname, searchptr->fname);
- strcat(fname, "/");
- fname[strlen(fname) + flen] = 0;
- }
- else
- {
- fname[0] = 0;
- }
- strncat(fname, (const char *)fbeg, flen);
-#ifdef VMS
- /* Change this 1/2 Unix 1/2 VMS file specification into a
- * full VMS file specification */
- if (searchptr->fname && (searchptr->fname[0] != 0))
- {
- /* Fix up the filename */
- hack_vms_include_specification(fname);
- }
- else
- {
- /* This is a normal VMS filespec, so use it unchanged. */
- strncpy(fname, fbeg, flen);
- fname[flen] = 0;
- /* if it's '#include filename', add the missing .h */
- if (!strchr(fname, '.'))
- {
- strcat(fname, ".h");
- }
- }
-#endif /* VMS */
- /* ??? There are currently 3 separate mechanisms for avoiding processing
- * of redundant include files: #import, #pragma once, and
- * redundant_include_p. It would be nice if they were unified. */
- if (redundant_include_p(pfile, fname))
- return 0;
- if (importing)
- f = lookup_import(pfile, fname, searchptr);
- else
- f = open_include_file(pfile, fname, searchptr);
- if (f == -2)
- return 0; /* Already included this file */
-#ifdef EACCES
- else if (f == -1 && errno == EACCES)
- cpp_warning(pfile, "Header file %s exists, but is not readable",
- fname);
-#endif
- if (f >= 0)
- break;
- }
- }
-
- if (f < 0)
- {
- /* A file that was not found. */
- strncpy(fname, (const char *)fbeg, flen);
- fname[flen] = 0;
- /* 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). */
-
- if (CPP_OPTIONS(pfile)->print_deps_missing_files
- && CPP_PRINT_DEPS(pfile)
- > (angle_brackets || (pfile->system_include_depth > 0)))
- {
- /* If it was requested as a system header file,
- * then assume it belongs in the first place to look for such. */
- if (angle_brackets)
- {
- for (searchptr = search_start; searchptr;
- searchptr = searchptr->next)
- {
- if (searchptr->fname)
- {
- char *p;
-
- if (searchptr->fname[0] == 0)
- continue;
- p = (char *)alloca(strlen(searchptr->fname)
- + strlen(fname) + 2);
- strcpy(p, searchptr->fname);
- strcat(p, "/");
- strcat(p, fname);
- deps_output(pfile, p, ' ');
- break;
- }
- }
- }
- else
- {
- /* Otherwise, omit the directory, as if the file existed
- * in the directory with the source. */
- deps_output(pfile, fname, ' ');
- }
- }
- /* 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 (CPP_PRINT_DEPS(pfile)
- && (CPP_PRINT_DEPS(pfile)
- <= (angle_brackets || (pfile->system_include_depth > 0))))
- cpp_warning(pfile, "No include path in which to find %s", fname);
- else if (search_start)
- cpp_error_from_errno(pfile, fname);
- else
- cpp_error(pfile, "No include path in which to find %s", fname);
- }
- else
- {
- /* Check to see if this include file is a once-only include file.
- * If so, give up. */
-
- file_name_list *ptr;
-
- for (ptr = pfile->dont_repeat_files; ptr; ptr = ptr->next)
- {
- if (!strcmp(ptr->fname, fname))
- {
- close(f);
- return 0; /* This file was once'd. */
- }
- }
-
- for (ptr = pfile->all_include_files; ptr; ptr = ptr->next)
- {
- if (!strcmp(ptr->fname, fname))
- break; /* This file was included before. */
- }
-
- if (!ptr)
- {
- /* This is the first time for this file. */
- /* Add it to list of files included. */
-
- ptr = (file_name_list *) xmalloc(sizeof(file_name_list));
-
- ptr->control_macro = 0;
- ptr->c_system_include_path = 0;
- ptr->next = pfile->all_include_files;
- pfile->all_include_files = ptr;
- ptr->fname = savestring(fname);
- ptr->got_name_map = 0;
-
- /* For -M, add this file to the dependencies. */
- if (CPP_PRINT_DEPS(pfile)
- > (angle_brackets || (pfile->system_include_depth > 0)))
- deps_output(pfile, fname, ' ');
- }
- /* Handle -H option. */
- if (CPP_OPTIONS(pfile)->print_include_names)
- {
- cpp_buffer *buf = CPP_BUFFER(pfile);
-
- while ((buf = CPP_PREV_BUFFER(buf)))
- putc('.', stderr);
- fprintf(stderr, "%s\n", fname);
- }
- if (angle_brackets)
- pfile->system_include_depth++;
-
- /* Actually process the file. */
-
- /* Record file on "seen" list for #import. */
- add_import(pfile, f, fname);
-
- /* Actually process the file */
- cpp_push_buffer(pfile, NULL, 0);
- if (finclude(pfile, f, fname, is_system_include(pfile, fname),
- searchptr != dsp ? searchptr : SELF_DIR_DUMMY))
- {
- output_line_command(pfile, 0, enter_file);
- pfile->only_seen_white = 2;
- }
- if (angle_brackets)
- pfile->system_include_depth--;
- }
- return 0;
-}
-
-/* Return nonzero if there is no need to include file NAME
- * because it has already been included and it contains a conditional
- * to make a repeated include do nothing. */
-
-static int
-redundant_include_p(cpp_reader * pfile, char *name)
-{
- file_name_list *l = pfile->all_include_files;
-
- for (; l; l = l->next)
- if (!strcmp(name, l->fname)
- && l->control_macro
- && cpp_lookup((const char *)l->control_macro, -1, -1))
- return 1;
- 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(cpp_reader * pfile, char *filename)
-{
- file_name_list *searchptr;
-
- for (searchptr = CPP_OPTIONS(pfile)->first_system_include; searchptr;
- searchptr = searchptr->next)
- if (searchptr->fname)
- {
- char *sys_dir = searchptr->fname;
- unsigned length = strlen(sys_dir);
-
- if (!strncmp(sys_dir, filename, length) && filename[length] == '/')
- {
- if (searchptr->c_system_include_path)
- return 2;
- else
- return 1;
- }
- }
- return 0;
-}
-
-/*
- * 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(cpp_reader * pfile, const char *name, int len, int hash)
-{
- ASSERTION_HASHNODE *hp;
- int i, bucket;
-
- i = sizeof(ASSERTION_HASHNODE) + len + 1;
- hp = (ASSERTION_HASHNODE *) xmalloc(i);
- bucket = hash;
- hp->bucket_hdr = &pfile->assertion_hashtab[bucket];
- hp->next = pfile->assertion_hashtab[bucket];
- pfile->assertion_hashtab[bucket] = hp;
- hp->prev = NULL;
- if (hp->next)
- hp->next->prev = hp;
- hp->length = len;
- hp->value = 0;
- hp->name = ((char *)hp) + sizeof(ASSERTION_HASHNODE);
- memcpy(hp->name, name, len);
- 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(cpp_reader * pfile, const char *name, int len, int hash)
-{
- ASSERTION_HASHNODE *bucket;
-
- bucket = pfile->assertion_hashtab[hash];
- while (bucket)
- {
- if (bucket->length == len && strncmp(bucket->name, name, len) == 0)
- return bucket;
- bucket = bucket->next;
- }
- return NULL;
-}
-
-static void
-delete_assertion(ASSERTION_HASHNODE * hp)
-{
- struct tokenlist_list *tail;
-
- if (hp->prev)
- hp->prev->next = hp->next;
- if (hp->next)
- hp->next->prev = hp->prev;
-
- for (tail = hp->value; tail;)
- {
- struct tokenlist_list *next = tail->next;
-
- free_token_list(tail->tokens);
- free(tail);
- tail = next;
- }
-
- /* 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);
-}
-
-/* Convert a character string literal into a nul-terminated string.
- * The input string is [IN ... LIMIT).
- * The result is placed in RESULT. RESULT can be the same as IN.
- * The value returned in the end of the string written to RESULT,
- * or NULL on error. */
-
-static char *
-convert_string(cpp_reader * pfile, char *result, char *in, char *limit,
- int handle_escapes)
-{
- unsigned char c;
-
- c = *in++;
- if (c != '\"')
- return NULL;
- while (in < limit)
- {
- c = *in++;
-
- switch (c)
- {
- case '\0':
- return NULL;
- case '\"':
- limit = in;
- break;
- case '\\':
- if (handle_escapes)
- {
- char *bpc = in;
- int i =
- (unsigned char)cpp_parse_escape(pfile, &bpc);
-
- in = bpc;
- if (i >= 0)
- *result++ = (unsigned char)c;
- break;
- }
- /* else fall through */
- default:
- *result++ = c;
- }
- }
- *result = 0;
- return result;
-}
-
-/*
- * interpret #line command. Remembers previously seen fnames
- * in its very own hash table.
- */
-#define FNAME_HASHSIZE 37
-
-static int
-do_line(cpp_reader * pfile, struct directive *keyword __UNUSED__,
- unsigned char *unused1 __UNUSED__, unsigned char *unused2 __UNUSED__)
-{
- cpp_buffer *ip = CPP_BUFFER(pfile);
- int new_lineno;
- long old_written = CPP_WRITTEN(pfile);
- enum file_change_code file_change = same_file;
- enum cpp_token token;
-
- token = get_directive_token(pfile);
-
- if (token != CPP_NUMBER || !isdigit(pfile->token_buffer[old_written]))
- {
- cpp_error(pfile, "invalid format `#line' command");
- goto bad_line_directive;
- }
- /* 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 *)(pfile->token_buffer + old_written)) - 1;
- CPP_SET_WRITTEN(pfile, old_written);
-
- /* NEW_LINENO is one less than the actual line number here. */
- if (CPP_PEDANTIC(pfile) && new_lineno < 0)
- cpp_pedwarn(pfile, "line number out of range in `#line' command");
-
- token = get_directive_token(pfile);
-
- if (token == CPP_STRING)
- {
- char *fname = (char *)pfile->token_buffer + old_written;
- char *end_name;
- static HASHNODE *fname_table[FNAME_HASHSIZE];
- HASHNODE *hp, **hash_bucket;
- unsigned char *p;
- long num_start;
- int fname_length;
-
- /* Turn the file name, which is a character string literal,
- * into a null-terminated string. Do this in place. */
- end_name =
- convert_string(pfile, fname, fname, (char *)CPP_PWRITTEN(pfile), 1);
- if (!end_name)
- {
- cpp_error(pfile, "invalid format `#line' command");
- goto bad_line_directive;
- }
- fname_length = end_name - fname;
-
- num_start = CPP_WRITTEN(pfile);
- token = get_directive_token(pfile);
- if (token != CPP_VSPACE && token != CPP_EOF && token != CPP_POP)
- {
- p = pfile->token_buffer + num_start;
- if (CPP_PEDANTIC(pfile))
- cpp_pedwarn(pfile, "garbage at end of `#line' command");
-
- if (token != CPP_NUMBER || *p < '0' || *p > '4' || p[1] != '\0')
- {
- cpp_error(pfile, "invalid format `#line' command");
- goto bad_line_directive;
- }
- if (*p == '1')
- file_change = enter_file;
- else if (*p == 2)
- file_change = leave_file;
- else if (*p == 3)
- ip->system_header_p = 1;
- else /* if (*p == 4) */
- ip->system_header_p = 2;
-
- CPP_SET_WRITTEN(pfile, num_start);
- token = get_directive_token(pfile);
- p = pfile->token_buffer + num_start;
- if (token == CPP_NUMBER && p[1] == '\0'
- && (*p == '3' || *p == '4'))
- {
- ip->system_header_p = *p == 3 ? 1 : 2;
- token = get_directive_token(pfile);
- }
- if (token != CPP_VSPACE)
- {
- cpp_error(pfile, "invalid format `#line' command");
- goto bad_line_directive;
- }
- }
- hash_bucket = &fname_table[hashf(fname, fname_length, FNAME_HASHSIZE)];
- for (hp = *hash_bucket; hp; hp = hp->next)
- if (hp->length == fname_length &&
- strncmp(hp->value.cpval, fname, fname_length) == 0)
- {
- ip->nominal_fname = hp->value.cpval;
- break;
- }
- if (!hp)
- {
- /* 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;
-
- hp->length = fname_length;
- ip->nominal_fname = hp->value.cpval =
- ((char *)hp) + sizeof(HASHNODE);
- memcpy(hp->value.cpval, fname, fname_length);
- }
- }
- else if (token != CPP_VSPACE && token != CPP_EOF)
- {
- cpp_error(pfile, "invalid format `#line' command");
- goto bad_line_directive;
- }
- ip->lineno = new_lineno;
- bad_line_directive:
- skip_rest_of_line(pfile);
- CPP_SET_WRITTEN(pfile, old_written);
- output_line_command(pfile, 0, file_change);
- 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(cpp_reader * pfile, struct directive *keyword, unsigned char *buf,
- unsigned char *limit)
-{
- int sym_length;
- HASHNODE *hp;
- unsigned char *orig_buf = buf;
-
- SKIP_WHITE_SPACE(buf);
- sym_length = check_macro_name(pfile, buf, "macro");
-
- while ((hp = cpp_lookup((const char *)buf, sym_length, -1)))
- {
- /* If we are generating additional info for debugging (with -g) we
- * need to pass through all effective #undef commands. */
- if (CPP_OPTIONS(pfile)->debug_output && keyword)
- pass_thru_directive((char *)orig_buf, (char *)limit, pfile, keyword);
- if (hp->type != T_MACRO)
- cpp_warning(pfile, "undefining `%s'", hp->name);
- delete_macro(hp);
- }
-
- if (CPP_PEDANTIC(pfile))
- {
- buf += sym_length;
- SKIP_WHITE_SPACE(buf);
- if (buf != limit)
- cpp_pedwarn(pfile, "garbage after `#undef' directive");
- }
- return 0;
-}
-
-/*
- * Report an error detected by the program we are processing.
- * Use the text of the line in the error message.
- * (We use error because it prints the filename & line#.)
- */
-
-static int
-do_error(cpp_reader * pfile, struct directive *keyword __UNUSED__,
- unsigned char *buf, unsigned char *limit)
-{
- int length = limit - buf;
- unsigned char *copy = (unsigned char *)xmalloc(length + 1);
-
- memcpy(copy, buf, length);
- copy[length] = 0;
- SKIP_WHITE_SPACE(copy);
- cpp_error(pfile, "#error %s", copy);
- return 0;
-}
-
-/*
- * Report a warning detected by the program we are processing.
- * Use the text of the line in the warning message, then continue.
- * (We use error because it prints the filename & line#.)
- */
-
-static int
-do_warning(cpp_reader * pfile, struct directive *keyword __UNUSED__,
- unsigned char *buf, unsigned char *limit)
-{
- int length = limit - buf;
- unsigned char *copy = (unsigned char *)xmalloc(length + 1);
-
- memcpy(copy, buf, length);
- copy[length] = 0;
- SKIP_WHITE_SPACE(copy);
- cpp_warning(pfile, "#warning %s", copy);
- return 0;
-}
-
-/* Remember the name of the current file being read from so that we can
- * avoid ever including it again. */
-
-static int
-do_once(cpp_reader * pfile)
-{
- cpp_buffer *ip = NULL;
- file_name_list *new_;
-
- for (ip = CPP_BUFFER(pfile);; ip = CPP_PREV_BUFFER(ip))
- {
- if (!ip)
- return 0;
- if (ip->fname)
- break;
- }
-
- new_ = (file_name_list *) xmalloc(sizeof(file_name_list));
-
- new_->next = pfile->dont_repeat_files;
- pfile->dont_repeat_files = new_;
- new_->fname = savestring(ip->fname);
- new_->control_macro = 0;
- new_->got_name_map = 0;
- new_->c_system_include_path = 0;
-
- return 0;
-}
-
-/* #ident has already been copied to the output file, so just ignore it. */
-
-static int
-do_ident(cpp_reader * pfile, struct directive *keyword __UNUSED__,
- unsigned char *buf __UNUSED__, unsigned char *limit __UNUSED__)
-{
-/* long old_written = CPP_WRITTEN (pfile); */
-
- /* Allow #ident in system headers, since that's not user's fault. */
- if (CPP_PEDANTIC(pfile) && !CPP_BUFFER(pfile)->system_header_p)
- cpp_pedwarn(pfile, "ANSI C does not allow `#ident'");
-
- /* Leave rest of line to be read by later calls to cpp_get_token. */
-
- 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(cpp_reader * pfile, struct directive *keyword __UNUSED__,
- unsigned char *buf, unsigned char *limit __UNUSED__)
-{
- while (*buf == ' ' || *buf == '\t')
- buf++;
-
- if (!strncmp((const char *)buf, "once", 4))
- {
- /* Allow #pragma once in system headers, since that's not the user's
- * fault. */
- if (!CPP_BUFFER(pfile)->system_header_p)
- cpp_warning(pfile, "`#pragma once' is obsolete");
- do_once(pfile);
- }
- if (!strncmp((const char *)buf, "implementation", 14))
- {
- /* Be quiet about `#pragma implementation' for a file only if it hasn't
- * been included yet. */
- file_name_list *ptr;
- char *p = (char *)buf + 14, *fname, *inc_fname;
- int fname_len;
-
- SKIP_WHITE_SPACE(p);
- if (*p == '\n' || *p != '\"')
- return 0;
-
- fname = p + 1;
- p = strchr(fname, '\"');
- fname_len = (p) ? (int)(p - fname) : (int)strlen(fname);
-
- for (ptr = pfile->all_include_files; ptr; ptr = ptr->next)
- {
- inc_fname = strrchr(ptr->fname, '/');
- inc_fname = inc_fname ? inc_fname + 1 : (char *)ptr->fname;
- if (inc_fname && !strncmp(inc_fname, fname, fname_len))
- cpp_warning(pfile,
- "`#pragma implementation' for `%s' appears after file is included",
- fname);
- }
- }
- return 0;
-}
-
-/* Just ignore #sccs, on systems where we define it at all. */
-
-/*
- * handle #if command 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 command)
- * 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(cpp_reader * pfile, struct directive *keyword __UNUSED__,
- unsigned char *buf, unsigned char *limit)
-{
- HOST_WIDE_INT value = eval_if_expression(pfile, buf, limit - buf);
-
- conditional_skip(pfile, value == 0, T_IF, NULL);
- return 0;
-}
-
-/*
- * handle a #elif directive by not changing if_stack either.
- * see the comment above do_else.
- */
-
-static int
-do_elif(cpp_reader * pfile, struct directive *keyword __UNUSED__,
- unsigned char *buf, unsigned char *limit)
-{
- if (pfile->if_stack == CPP_BUFFER(pfile)->if_stack)
- {
- cpp_error(pfile, "`#elif' not within a conditional");
- return 0;
- }
- else
- {
- if (pfile->if_stack->type != T_IF && pfile->if_stack->type != T_ELIF)
- {
- cpp_error(pfile, "`#elif' after `#else'");
- if (pfile->if_stack->fname
- && CPP_BUFFER(pfile)->fname
- && strcmp(pfile->if_stack->fname,
- CPP_BUFFER(pfile)->nominal_fname) != 0)
- fprintf(stderr, ", file %s", pfile->if_stack->fname);
- fprintf(stderr, ")\n");
- }
- pfile->if_stack->type = T_ELIF;
- }
-
- if (pfile->if_stack->if_succeeded)
- skip_if_group(pfile, 0);
- else
- {
- HOST_WIDE_INT value = eval_if_expression(pfile, buf, limit - buf);
-
- if (value == 0)
- skip_if_group(pfile, 0);
- else
- {
- ++pfile->if_stack->if_succeeded; /* continue processing input */
- output_line_command(pfile, 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_WIDE_INT
-eval_if_expression(cpp_reader * pfile, unsigned char *buf __UNUSED__,
- int length __UNUSED__)
-{
- HASHNODE *save_defined;
- HOST_WIDE_INT value;
- long old_written = CPP_WRITTEN(pfile);
-
- save_defined = install("defined", -1, T_SPEC_DEFINED, 0, 0, -1);
- pfile->pcp_inside_if = 1;
-
- value = cpp_parse_expr(pfile);
- pfile->pcp_inside_if = 0;
- delete_macro(save_defined); /* clean up special symbol */
-
- CPP_SET_WRITTEN(pfile, old_written); /* Pop */
-
- 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(cpp_reader * pfile, struct directive *keyword,
- unsigned char *unused1 __UNUSED__, unsigned char *unused2 __UNUSED__)
-{
- int skip;
- cpp_buffer *ip = CPP_BUFFER(pfile);
- char *ident;
- int ident_length;
- enum cpp_token token;
- int start_of_file = 0;
- unsigned char *control_macro = 0;
- int old_written = CPP_WRITTEN(pfile);
-
- /* Detect a #ifndef at start of file (not counting comments). */
- if (ip->fname != 0 && keyword->type == T_IFNDEF)
- start_of_file = pfile->only_seen_white == 2;
-
- pfile->no_macro_expand++;
- token = get_directive_token(pfile);
- pfile->no_macro_expand--;
-
- ident = (char *)pfile->token_buffer + old_written;
- ident_length = CPP_WRITTEN(pfile) - old_written;
- CPP_SET_WRITTEN(pfile, old_written); /* Pop */
-
- if (token == CPP_VSPACE || token == CPP_POP || token == CPP_EOF)
- {
- skip = (keyword->type == T_IFDEF);
- if (!CPP_TRADITIONAL(pfile))
- cpp_pedwarn(pfile, "`#%s' with no argument", keyword->name);
- }
- else if (token == CPP_NAME)
- {
- HASHNODE *hp = cpp_lookup(ident, ident_length, -1);
-
- skip = (!hp) ^ (keyword->type == T_IFNDEF);
- if (start_of_file && !skip)
- {
- control_macro = (unsigned char *)xmalloc(ident_length + 1);
- memcpy(control_macro, ident, ident_length + 1);
- }
- }
- else
- {
- skip = (keyword->type == T_IFDEF);
- if (!CPP_TRADITIONAL(pfile))
- cpp_error(pfile, "`#%s' with invalid argument", keyword->name);
- }
-
- if (!CPP_TRADITIONAL(pfile))
- {
- int c;
-
- cpp_skip_hspace(pfile);
- c = PEEKC();
- if (c != EOF && c != '\n')
- cpp_pedwarn(pfile, "garbage at end of `#%s' argument",
- keyword->name);
- }
- skip_rest_of_line(pfile);
-
- conditional_skip(pfile, skip, T_IF, control_macro);
- 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(cpp_reader * pfile, int skip, enum node_type type,
- unsigned char *control_macro)
-{
- IF_STACK_FRAME *temp;
-
- temp = (IF_STACK_FRAME *) xcalloc(1, sizeof(IF_STACK_FRAME));
- temp->fname = CPP_BUFFER(pfile)->nominal_fname;
- temp->next = pfile->if_stack;
- temp->control_macro = control_macro;
- pfile->if_stack = temp;
-
- pfile->if_stack->type = type;
-
- if (skip != 0)
- {
- skip_if_group(pfile, 0);
- return;
- }
- else
- {
- ++pfile->if_stack->if_succeeded;
- output_line_command(pfile, 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(cpp_reader * pfile, int any)
-{
- int c;
- struct directive *kt;
- IF_STACK_FRAME *save_if_stack = pfile->if_stack; /* don't pop past here */
-
- int ident_length;
- char *ident;
- struct parse_marker line_start_mark;
-
- parse_set_mark(&line_start_mark, pfile);
-
- if (CPP_OPTIONS(pfile)->output_conditionals)
- {
- static char failed[] = "#failed\n";
-
- CPP_PUTS(pfile, failed, sizeof(failed) - 1);
- pfile->lineno++;
- output_line_command(pfile, 1, same_file);
- }
- beg_of_line:
- if (CPP_OPTIONS(pfile)->output_conditionals)
- {
- cpp_buffer *pbuf = CPP_BUFFER(pfile);
- unsigned char *start_line = pbuf->buf + line_start_mark.position;
-
- CPP_PUTS(pfile, start_line, pbuf->cur - start_line);
- }
- parse_move_mark(&line_start_mark, pfile);
- if (!CPP_TRADITIONAL(pfile))
- cpp_skip_hspace(pfile);
- c = GETC();
- if (c == '#')
- {
- int old_written = CPP_WRITTEN(pfile);
-
- cpp_skip_hspace(pfile);
-
- parse_name(pfile, GETC());
- ident_length = CPP_WRITTEN(pfile) - old_written;
- ident = (char *)pfile->token_buffer + old_written;
- pfile->limit = (unsigned char *)ident;
-
- for (kt = directive_table; kt->length >= 0; kt++)
- {
- IF_STACK_FRAME *temp;
-
- if (ident_length == kt->length
- && strncmp(ident, 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 = pfile->if_stack;
- pfile->if_stack = temp;
- temp->fname = CPP_BUFFER(pfile)->nominal_fname;
- temp->type = kt->type;
- break;
- case T_ELSE:
- case T_ENDIF:
- if (CPP_PEDANTIC(pfile)
- && pfile->if_stack != save_if_stack)
- validate_else(pfile,
- kt->type ==
- T_ELSE ? "#else" : "#endif");
- case T_ELIF:
- if (pfile->if_stack == CPP_BUFFER(pfile)->if_stack)
- {
- cpp_error(pfile,
- "`#%s' not within a conditional",
- kt->name);
- break;
- }
- else if (pfile->if_stack == save_if_stack)
- goto done; /* found what we came for */
-
- if (kt->type != T_ENDIF)
- {
- if (pfile->if_stack->type == T_ELSE)
- cpp_error(pfile,
- "`#else' or `#elif' after `#else'");
- pfile->if_stack->type = kt->type;
- break;
- }
- temp = pfile->if_stack;
- pfile->if_stack = temp->next;
- free(temp);
- break;
- default:;
- }
- break;
- }
- /* Don't let erroneous code go by. */
- if (kt->length < 0 && !CPP_OPTIONS(pfile)->lang_asm
- && CPP_PEDANTIC(pfile))
- cpp_pedwarn(pfile, "invalid preprocessor directive name");
- }
- c = GETC();
- }
- /* We're in the middle of a line. Skip the rest of it. */
- for (;;)
- {
- switch (c)
- {
- long old;
-
- case EOF:
- goto done;
- case '/': /* possible comment */
- c = skip_comment(pfile, NULL);
- if (c == EOF)
- goto done;
- break;
- case '\"':
- case '\'':
- FORWARD(-1);
- old = CPP_WRITTEN(pfile);
- cpp_get_token(pfile);
- CPP_SET_WRITTEN(pfile, old);
- break;
- case '\\':
- /* Char after backslash loses its special meaning. */
- if (PEEKC() == '\n')
- FORWARD(1);
- break;
- case '\n':
- goto beg_of_line;
- break;
- }
- c = GETC();
- }
- done:
- if (CPP_OPTIONS(pfile)->output_conditionals)
- {
- static char end_failed[] = "#endfailed\n";
-
- CPP_PUTS(pfile, end_failed, sizeof(end_failed) - 1);
- pfile->lineno++;
- }
- pfile->only_seen_white = 1;
- parse_goto_mark(&line_start_mark, pfile);
- parse_clear_mark(&line_start_mark);
-}
-
-/*
- * 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(cpp_reader * pfile, struct directive *keyword __UNUSED__,
- unsigned char *buf __UNUSED__, unsigned char *limit __UNUSED__)
-{
- cpp_buffer *ip = CPP_BUFFER(pfile);
-
- if (CPP_PEDANTIC(pfile))
- validate_else(pfile, "#else");
- skip_rest_of_line(pfile);
-
- if (pfile->if_stack == CPP_BUFFER(pfile)->if_stack)
- {
- cpp_error(pfile, "`#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. */
- pfile->if_stack->control_macro = 0;
-
- if (pfile->if_stack->type != T_IF && pfile->if_stack->type != T_ELIF)
- {
- cpp_error(pfile, "`#else' after `#else'");
- fprintf(stderr, " (matches line %d", pfile->if_stack->lineno);
- if (strcmp(pfile->if_stack->fname, ip->nominal_fname) != 0)
- fprintf(stderr, ", file %s", pfile->if_stack->fname);
- fprintf(stderr, ")\n");
- }
- pfile->if_stack->type = T_ELSE;
- }
-
- if (pfile->if_stack->if_succeeded)
- skip_if_group(pfile, 0);
- else
- {
- ++pfile->if_stack->if_succeeded; /* continue processing input */
- output_line_command(pfile, 1, same_file);
- }
- return 0;
-}
-
-/*
- * unstack after #endif command
- */
-
-static int
-do_endif(cpp_reader * pfile, struct directive *keyword __UNUSED__,
- unsigned char *buf __UNUSED__, unsigned char *limit __UNUSED__)
-{
- if (CPP_PEDANTIC(pfile))
- validate_else(pfile, "#endif");
- skip_rest_of_line(pfile);
-
- if (pfile->if_stack == CPP_BUFFER(pfile)->if_stack)
- {
- cpp_error(pfile, "unbalanced `#endif'");
- }
- else
- {
- IF_STACK_FRAME *temp = pfile->if_stack;
-
- pfile->if_stack = temp->next;
- if (temp->control_macro)
- {
- /* This #endif matched a #ifndef at the start of the file.
- * See if it is at the end of the file. */
- struct parse_marker start_mark;
- int c;
-
- parse_set_mark(&start_mark, pfile);
-
- for (;;)
- {
- cpp_skip_hspace(pfile);
- c = GETC();
- if (c != '\n')
- break;
- }
- parse_goto_mark(&start_mark, pfile);
- parse_clear_mark(&start_mark);
-
- if (c == EOF)
- {
- /* 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. */
- {
- file_name_list *ifile = pfile->all_include_files;
-
- for (; ifile; ifile = ifile->next)
- {
- if (!strcmp(ifile->fname, CPP_BUFFER(pfile)->fname))
- {
- ifile->control_macro = temp->control_macro;
- break;
- }
- }
- }
- }
- }
- free(temp);
- output_line_command(pfile, 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 command name. P points to the first char after the command name. */
-
-static void
-validate_else(cpp_reader * pfile, const char *directive)
-{
- int c;
-
- cpp_skip_hspace(pfile);
- c = PEEKC();
- if (c != EOF && c != '\n')
- cpp_pedwarn(pfile,
- "text following `%s' violates ANSI standard", directive);
-}
-
-/* Get the next token, and add it to the text in pfile->token_buffer.
- * Return the kind of token we got. */
-
-enum cpp_token
-cpp_get_token(cpp_reader * pfile)
-{
- int c, c2, c3;
- long old_written = 0;
- long start_line, start_column;
- enum cpp_token token;
- struct cpp_options *opts = CPP_OPTIONS(pfile);
-
- CPP_BUFFER(pfile)->prev = CPP_BUFFER(pfile)->cur;
- get_next:
- c = GETC();
- if (c == EOF)
- {
- handle_eof:
- if (CPP_BUFFER(pfile)->seen_eof)
- {
- if (cpp_pop_buffer(pfile) != CPP_NULL_BUFFER(pfile))
- goto get_next;
- else
- return CPP_EOF;
- }
- else
- {
- cpp_buffer *next_buf = CPP_PREV_BUFFER(CPP_BUFFER(pfile));
-
- CPP_BUFFER(pfile)->seen_eof = 1;
- if (CPP_BUFFER(pfile)->nominal_fname && next_buf)
- {
- /* We're about to return from an #include file.
- * Emit #line information now (as part of the CPP_POP) result.
- * But the #line refers to the file we will pop to. */
- cpp_buffer *cur_buffer = CPP_BUFFER(pfile);
-
- CPP_BUFFER(pfile) = next_buf;
- pfile->input_stack_listing_current = 0;
- output_line_command(pfile, 0, leave_file);
- CPP_BUFFER(pfile) = cur_buffer;
- }
- return CPP_POP;
- }
- }
- else
- {
- switch (c)
- {
- long newlines;
- struct parse_marker start_mark;
-
- case '/':
- if (PEEKC() == '=')
- goto op2;
- if (opts->put_out_comments)
- parse_set_mark(&start_mark, pfile);
- newlines = 0;
- cpp_buf_line_and_col(cpp_file_buffer(pfile),
- &start_line, &start_column);
- c = skip_comment(pfile, &newlines);
- if (opts->put_out_comments && (c == '/' || c == EOF))
- parse_clear_mark(&start_mark);
- if (c == '/')
- goto randomchar;
- if (c == EOF)
- {
- cpp_error_with_line(pfile, start_line, start_column,
- "unterminated comment");
- goto handle_eof;
- }
- c = '/'; /* Initial letter of comment. */
- return_comment:
- /* Comments are equivalent to spaces.
- * For -traditional, a comment is equivalent to nothing. */
- if (opts->put_out_comments)
- {
- cpp_buffer *pbuf = CPP_BUFFER(pfile);
- unsigned char *start = pbuf->buf + start_mark.position;
- int len = pbuf->cur - start;
-
- CPP_RESERVE(pfile, 1 + len);
- CPP_PUTC_Q(pfile, c);
- CPP_PUTS_Q(pfile, start, len);
- pfile->lineno += newlines;
- parse_clear_mark(&start_mark);
- return CPP_COMMENT;
- }
- else if (CPP_TRADITIONAL(pfile))
- {
- return CPP_COMMENT;
- }
- else
- {
- CPP_RESERVE(pfile, 1);
- CPP_PUTC_Q(pfile, ' ');
- return CPP_HSPACE;
- }
-
- case '#':
- if (!pfile->only_seen_white)
- goto randomchar;
- if (handle_directive(pfile))
- return CPP_DIRECTIVE;
- pfile->only_seen_white = 0;
- return CPP_OTHER;
-
- case '\"':
- case '\'':
- /* A single quoted string is treated like a double -- some
- * programs (e.g., troff) are perverse this way */
- cpp_buf_line_and_col(cpp_file_buffer(pfile),
- &start_line, &start_column);
- old_written = CPP_WRITTEN(pfile);
- string:
- CPP_PUTC(pfile, c);
- while (1)
- {
- int cc = GETC();
-
- if (cc == EOF)
- {
- if (CPP_IS_MACRO_BUFFER(CPP_BUFFER(pfile)))
- {
- /* 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. */
- cpp_buffer *next_buf
- = CPP_PREV_BUFFER(CPP_BUFFER(pfile));
-
- (*CPP_BUFFER(pfile)->cleanup)
- (CPP_BUFFER(pfile), pfile);
- CPP_BUFFER(pfile) = next_buf;
- continue;
- }
- if (!CPP_TRADITIONAL(pfile))
- {
- cpp_error_with_line(pfile, start_line, start_column,
- "unterminated string or character constant");
- if (pfile->multiline_string_line != start_line
- && pfile->multiline_string_line != 0)
- cpp_error_with_line(pfile,
- pfile->multiline_string_line,
- -1,
- "possible real start of unterminated constant");
- pfile->multiline_string_line = 0;
- }
- break;
- }
- CPP_PUTC(pfile, cc);
- switch (cc)
- {
- case '\n':
- /* Traditionally, end of line ends a string constant with
- * no error. So exit the loop and record the new line. */
- if (CPP_TRADITIONAL(pfile))
- goto while2end;
- if (c == '\'')
- {
- cpp_error_with_line(pfile, start_line, start_column,
- "unterminated character constant");
- goto while2end;
- }
- if (CPP_PEDANTIC(pfile)
- && pfile->multiline_string_line == 0)
- {
- cpp_pedwarn_with_line(pfile, start_line,
- start_column,
- "string constant runs past end of line");
- }
- if (pfile->multiline_string_line == 0)
- pfile->multiline_string_line = start_line;
- break;
-
- case '\\':
- cc = GETC();
- if (cc == '\n')
- {
- /* Backslash newline is replaced by nothing at all. */
- CPP_ADJUST_WRITTEN(pfile, -1);
- pfile->lineno++;
- }
- else
- {
- /* ANSI stupidly requires that in \\ the second \
- * is *not* prevented from combining with a newline. */
- NEWLINE_FIX1(cc);
- if (cc != EOF)
- CPP_PUTC(pfile, cc);
- }
- break;
-
- case '\"':
- case '\'':
- if (cc == c)
- goto while2end;
- break;
- }
- }
- while2end:
- pfile->lineno += count_newlines(pfile->token_buffer + old_written,
- CPP_PWRITTEN(pfile));
- pfile->only_seen_white = 0;
- return c == '\'' ? CPP_CHAR : CPP_STRING;
-
- case '$':
- if (!opts->dollars_in_ident)
- goto randomchar;
- goto letter;
-
- case ':':
- if (opts->cplusplus && PEEKC() == ':')
- goto op2;
- goto randomchar;
-
- case '&':
- case '+':
- case '|':
- NEWLINE_FIX;
- c2 = PEEKC();
- if (c2 == c || c2 == '=')
- goto op2;
- goto randomchar;
-
- case '*':
- case '!':
- case '%':
- case '=':
- case '^':
- NEWLINE_FIX;
- if (PEEKC() == '=')
- goto op2;
- goto randomchar;
-
- case '-':
- NEWLINE_FIX;
- c2 = PEEKC();
- if (c2 == '-' && opts->chill)
- {
- /* Chill style comment */
- if (opts->put_out_comments)
- parse_set_mark(&start_mark, pfile);
- FORWARD(1); /* Skip second '-'. */
- for (;;)
- {
- c = GETC();
- if (c == EOF)
- break;
- if (c == '\n')
- {
- /* Don't consider final '\n' to be part of comment. */
- FORWARD(-1);
- break;
- }
- }
- c = '-';
- goto return_comment;
- }
- if (c2 == '-' || c2 == '=' || c2 == '>')
- goto op2;
- goto randomchar;
-
- case '<':
- if (pfile->parsing_include_directive)
- {
- for (;;)
- {
- CPP_PUTC(pfile, c);
- if (c == '>')
- break;
- c = GETC();
- NEWLINE_FIX1(c);
- if (c == '\n' || c == EOF)
- {
- cpp_error(pfile,
- "missing '>' in `#include <FILENAME>'");
- break;
- }
- }
- return CPP_STRING;
- }
- /* else fall through */
- case '>':
- NEWLINE_FIX;
- c2 = PEEKC();
- if (c2 == '=')
- goto op2;
- if (c2 != c)
- goto randomchar;
- FORWARD(1);
- CPP_RESERVE(pfile, 4);
- CPP_PUTC(pfile, c);
- CPP_PUTC(pfile, c2);
- NEWLINE_FIX;
- c3 = PEEKC();
- if (c3 == '=')
- CPP_PUTC_Q(pfile, GETC());
- CPP_NUL_TERMINATE_Q(pfile);
- pfile->only_seen_white = 0;
- return CPP_OTHER;
-
- case '@':
- if (CPP_BUFFER(pfile)->has_escapes)
- {
- c = GETC();
- if (c == '-')
- {
- if (pfile->output_escapes)
- CPP_PUTS(pfile, "@-", 2);
- parse_name(pfile, GETC());
- return CPP_NAME;
- }
- else if (is_space[c])
- {
- CPP_RESERVE(pfile, 2);
- if (pfile->output_escapes)
- CPP_PUTC_Q(pfile, '@');
- CPP_PUTC_Q(pfile, c);
- return CPP_HSPACE;
- }
- }
- if (pfile->output_escapes)
- {
- CPP_PUTS(pfile, "@@", 2);
- return CPP_OTHER;
- }
- goto randomchar;
-
- case '.':
- NEWLINE_FIX;
- c2 = PEEKC();
- if (isdigit(c2))
- {
- CPP_RESERVE(pfile, 2);
- CPP_PUTC_Q(pfile, '.');
- c = GETC();
- goto number;
- }
- /* FIXME - misses the case "..\\\n." */
- if (c2 == '.' && PEEKN(1) == '.')
- {
- CPP_RESERVE(pfile, 4);
- CPP_PUTC_Q(pfile, '.');
- CPP_PUTC_Q(pfile, '.');
- CPP_PUTC_Q(pfile, '.');
- FORWARD(2);
- CPP_NUL_TERMINATE_Q(pfile);
- pfile->only_seen_white = 0;
- return CPP_3DOTS;
- }
- goto randomchar;
-
- op2:
- token = CPP_OTHER;
- pfile->only_seen_white = 0;
- op2any:
- CPP_RESERVE(pfile, 3);
- CPP_PUTC_Q(pfile, c);
- CPP_PUTC_Q(pfile, GETC());
- CPP_NUL_TERMINATE_Q(pfile);
- return token;
-
- case 'L':
- NEWLINE_FIX;
- c2 = PEEKC();
- if ((c2 == '\'' || c2 == '\"') && !CPP_TRADITIONAL(pfile))
- {
- CPP_PUTC(pfile, c);
- c = GETC();
- goto string;
- }
- goto letter;
-
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
- number:
- c2 = '.';
- for (;;)
- {
- CPP_RESERVE(pfile, 2);
- CPP_PUTC_Q(pfile, c);
- NEWLINE_FIX;
- c = PEEKC();
- if (c == EOF)
- break;
- if (!is_idchar[c] && c != '.'
- && ((c2 != 'e' && c2 != 'E') || (c != '+' && c != '-')))
- break;
- FORWARD(1);
- c2 = c;
- }
- CPP_NUL_TERMINATE_Q(pfile);
- pfile->only_seen_white = 0;
- return CPP_NUMBER;
- case 'b':
- case 'c':
- case 'd':
- case 'h':
- case 'o':
- case 'B':
- case 'C':
- case 'D':
- case 'H':
- case 'O':
- if (opts->chill && PEEKC() == '\'')
- {
- pfile->only_seen_white = 0;
- CPP_RESERVE(pfile, 2);
- CPP_PUTC_Q(pfile, c);
- CPP_PUTC_Q(pfile, '\'');
- FORWARD(1);
- for (;;)
- {
- c = GETC();
- if (c == EOF)
- goto chill_number_eof;
- if (!is_idchar[c])
- {
- if (c == '\\' && PEEKC() == '\n')
- {
- FORWARD(2);
- continue;
- }
- break;
- }
- CPP_PUTC(pfile, c);
- }
- if (c == '\'')
- {
- CPP_RESERVE(pfile, 2);
- CPP_PUTC_Q(pfile, c);
- CPP_NUL_TERMINATE_Q(pfile);
- return CPP_STRING;
- }
- else
- {
- FORWARD(-1);
- chill_number_eof:
- CPP_NUL_TERMINATE(pfile);
- return CPP_NUMBER;
- }
- }
- else
- goto letter;
- case '_':
- case 'a':
- case 'e':
- case 'f':
- case 'g':
- case 'i':
- case 'j':
- case 'k':
- case 'l':
- case 'm':
- case 'n':
- 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 'E':
- case 'F':
- case 'G':
- case 'I':
- case 'J':
- case 'K':
- case 'M':
- case 'N':
- case 'P':
- case 'Q':
- case 'R':
- case 'S':
- case 'T':
- case 'U':
- case 'V':
- case 'W':
- case 'X':
- case 'Y':
- case 'Z':
- letter:
- {
- HASHNODE *hp;
- char *ident;
- int before_name_written = CPP_WRITTEN(pfile);
- int ident_len;
-
- parse_name(pfile, c);
- pfile->only_seen_white = 0;
- if (pfile->no_macro_expand)
- return CPP_NAME;
- ident = (char *)pfile->token_buffer + before_name_written;
- ident_len = CPP_PWRITTEN(pfile) - (unsigned char *)ident;
- hp = cpp_lookup(ident, ident_len, -1);
- if (!hp)
- return CPP_NAME;
- if (hp->type == T_DISABLED)
- {
- if (pfile->output_escapes)
- { /* Return "@-IDENT", followed by '\0'. */
- int i;
-
- CPP_RESERVE(pfile, 3);
- ident =
- (char *)pfile->token_buffer + before_name_written;
- CPP_ADJUST_WRITTEN(pfile, 2);
- for (i = ident_len; i >= 0; i--)
- ident[i + 2] = ident[i];
- ident[0] = '@';
- ident[1] = '-';
- }
- return CPP_NAME;
- }
- /* 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->value.defn->nargs >= 0)
- {
- struct parse_marker macro_mark;
- int is_macro_call;
-
- while (CPP_IS_MACRO_BUFFER(CPP_BUFFER(pfile)))
- {
- cpp_buffer *next_buf;
-
- cpp_skip_hspace(pfile);
- if (PEEKC() != EOF)
- break;
- next_buf = CPP_PREV_BUFFER(CPP_BUFFER(pfile));
- (*CPP_BUFFER(pfile)->cleanup) (CPP_BUFFER(pfile),
- pfile);
- CPP_BUFFER(pfile) = next_buf;
- }
- parse_set_mark(¯o_mark, pfile);
- for (;;)
- {
- cpp_skip_hspace(pfile);
- c = PEEKC();
- is_macro_call = c == '(';
- if (c != '\n')
- break;
- FORWARD(1);
- }
- if (!is_macro_call)
- parse_goto_mark(¯o_mark, pfile);
- parse_clear_mark(¯o_mark);
- if (!is_macro_call)
- return CPP_NAME;
- }
- /* This is now known to be a macro call. */
-
- /* it might not actually be a macro. */
- if (hp->type != T_MACRO)
- {
- int xbuf_len;
- unsigned char *xbuf;
-
- CPP_SET_WRITTEN(pfile, before_name_written);
- special_symbol(hp, pfile);
- xbuf_len = CPP_WRITTEN(pfile) - before_name_written;
- xbuf = (unsigned char *)xmalloc(xbuf_len + 1);
- CPP_SET_WRITTEN(pfile, before_name_written);
- memcpy(xbuf, CPP_PWRITTEN(pfile), xbuf_len + 1);
- push_macro_expansion(pfile, xbuf, xbuf_len, hp);
- }
- else
- {
- /* Expand the macro, reading arguments as needed,
- * and push the expansion on the input stack. */
- macroexpand(pfile, hp);
- CPP_SET_WRITTEN(pfile, before_name_written);
- }
-
- /* An extra "@ " is added to the end of a macro expansion
- * to prevent accidental token pasting. We prefer to avoid
- * unneeded extra spaces (for the sake of cpp-using tools like
- * imake). Here we remove the space if it is safe to do so. */
- if (pfile->buffer->rlimit - pfile->buffer->cur >= 3
- && pfile->buffer->rlimit[-2] == '@'
- && pfile->buffer->rlimit[-1] == ' ')
- {
- int c1 = pfile->buffer->rlimit[-3];
-
- c2 = CPP_BUF_PEEK(CPP_PREV_BUFFER(CPP_BUFFER(pfile)));
-
- if (c2 == EOF || !unsafe_chars(c1, c2))
- pfile->buffer->rlimit -= 2;
- }
- }
- goto get_next;
-
- case ' ':
- case '\t':
- case '\v':
- case '\r':
- for (;;)
- {
- CPP_PUTC(pfile, c);
- c = PEEKC();
- if (c == EOF || !is_hor_space[c])
- break;
- FORWARD(1);
- }
- return CPP_HSPACE;
-
- case '\\':
- c2 = PEEKC();
- if (c2 != '\n')
- goto randomchar;
- token = CPP_HSPACE;
- goto op2any;
-
- case '\n':
- CPP_PUTC(pfile, c);
- if (pfile->only_seen_white == 0)
- pfile->only_seen_white = 1;
- pfile->lineno++;
- output_line_command(pfile, 1, same_file);
- return CPP_VSPACE;
-
- case '(':
- token = CPP_LPAREN;
- goto char1;
- case ')':
- token = CPP_RPAREN;
- goto char1;
- case '{':
- token = CPP_LBRACE;
- goto char1;
- case '}':
- token = CPP_RBRACE;
- goto char1;
- case ',':
- token = CPP_COMMA;
- goto char1;
- case ';':
- token = CPP_SEMICOLON;
- goto char1;
-
- randomchar:
- default:
- token = CPP_OTHER;
- char1:
- pfile->only_seen_white = 0;
- CPP_PUTC(pfile, c);
- return token;
- }
- }
-}
-
-#if 0 /* Unused */
-/* Like cpp_get_token, but skip spaces and comments. */
-enum cpp_token
-cpp_get_non_space_token(cpp_reader * pfile)
-{
- int old_written = CPP_WRITTEN(pfile);
-
- for (;;)
- {
- enum cpp_token token = cpp_get_token(pfile);
-
- if (token != CPP_COMMENT && token != CPP_POP
- && token != CPP_HSPACE && token != CPP_VSPACE)
- return token;
- CPP_SET_WRITTEN(pfile, old_written);
- }
-}
-#endif
-
-/* Parse an identifier starting with C. */
-
-int
-parse_name(cpp_reader * pfile, int c)
-{
- for (;;)
- {
- if (!is_idchar[c])
- {
- if (c == '\\' && PEEKC() == '\n')
- {
- FORWARD(2);
- continue;
- }
- FORWARD(-1);
- break;
- }
- CPP_RESERVE(pfile, 2); /* One more for final NUL. */
- CPP_PUTC_Q(pfile, c);
- c = GETC();
- if (c == EOF)
- break;
- }
- CPP_NUL_TERMINATE_Q(pfile);
- return 1;
-}
-
-/* Maintain and search list of included files, for #import. */
-
-/* Hash a file name for import_hash_table. */
-
-static int
-import_hash(char *f)
-{
- int val = 0;
-
- while (*f)
- val += *f++;
- return (val % IMPORT_HASH_SIZE);
-}
-
-/* Search for file FILENAME in import_hash_table.
- * 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. */
-
-static int
-lookup_import(cpp_reader * pfile, char *filename, file_name_list * searchptr)
-{
- struct import_file *i;
- int h;
- int hashval;
- struct stat sb;
- int fd;
-
- hashval = import_hash(filename);
-
- /* Attempt to find file in list of already included files */
- i = pfile->import_hash_table[hashval];
-
- while (i)
- {
- if (!strcmp(filename, i->name))
- return -2; /* return found */
- i = i->next;
- }
- /* Open it and try a match on inode/dev */
- fd = open_include_file(pfile, filename, searchptr);
- if (fd < 0)
- return fd;
- fstat(fd, &sb);
- for (h = 0; h < IMPORT_HASH_SIZE; h++)
- {
- i = pfile->import_hash_table[h];
- while (i)
- {
- /* Compare the inode and the device.
- * Supposedly on some systems the inode is not a scalar. */
- if (!memcmp
- ((char *)&i->inode, (char *)&sb.st_ino, sizeof(sb.st_ino))
- && i->dev == sb.st_dev)
- {
- close(fd);
- return -2; /* return found */
- }
- i = i->next;
- }
- }
- return fd; /* Not found, return open file */
-}
-
-/* Add the file FNAME, open on descriptor FD, to import_hash_table. */
-
-static void
-add_import(cpp_reader * pfile, int fd, char *fname)
-{
- struct import_file *i;
- int hashval;
- struct stat sb;
-
- hashval = import_hash(fname);
- fstat(fd, &sb);
- i = (struct import_file *)xmalloc(sizeof(struct import_file));
-
- i->name = (char *)xmalloc(strlen(fname) + 1);
- strcpy(i->name, fname);
- memcpy((char *)&i->inode, (char *)&sb.st_ino, sizeof(sb.st_ino));
- i->dev = sb.st_dev;
- i->next = pfile->import_hash_table[hashval];
- pfile->import_hash_table[hashval] = i;
-}
-
-/* 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;
-};
-
-#if USE_FILE_NAME_MAPS
-
-#define FILE_NAME_MAP_FILE "header.gcc"
-
-/* Read a space delimited string of unlimited length from a stdio
- * file. */
-
-static char *
-read_filename_string(int ch, FILE * f)
-{
- char *alloc, *set;
- int len;
-
- len = 20;
- set = alloc = (char *)xmalloc(len + 1);
- if (!is_space[ch])
- {
- *set++ = ch;
- while ((ch = getc(f)) != EOF && !is_space[ch])
- {
- if (set - alloc == len)
- {
- len *= 2;
- alloc = (char *)xrealloc(alloc, len + 1);
- set = alloc + len / 2;
- }
- *set++ = ch;
- }
- }
- *set = '\0';
- ungetc(ch, f);
- return alloc;
-}
-
-/* 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;
-};
-
-/* Read the file name map file for DIRNAME. */
-
-static struct file_name_map *
-read_name_map(cpp_reader * pfile, const char *dirname)
-{
- struct file_name_map_list *map_list_ptr;
- char *name;
- FILE *f;
-
- for (map_list_ptr = CPP_OPTIONS(pfile)->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 = savestring(dirname);
- map_list_ptr->map_list_map = NULL;
-
- name = (char *)alloca(strlen(dirname) + strlen(FILE_NAME_MAP_FILE) + 2);
- strcpy(name, dirname);
- if (*dirname)
- strcat(name, "/");
- strcat(name, FILE_NAME_MAP_FILE);
-#ifndef __EMX__
- f = fopen(name, "r");
-#else
- f = fopen(name, "rt");
-#endif
- if (!f)
- map_list_ptr->map_list_map = NULL;
- else
- {
- int ch;
- int dirlen = strlen(dirname);
-
- while ((ch = getc(f)) != EOF)
- {
- char *from, *to;
- struct file_name_map *ptr;
-
- 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);
-
- ptr =
- ((struct file_name_map *)xmalloc(sizeof(struct file_name_map)));
-
- ptr->map_from = from;
-
- /* Make the real filename absolute. */
- if (*to == '/')
- ptr->map_to = to;
- else
- {
- ptr->map_to = (char *)xmalloc(dirlen + strlen(to) + 2);
- strcpy(ptr->map_to, dirname);
- ptr->map_to[dirlen] = '/';
- strcpy(ptr->map_to + dirlen + 1, 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 = CPP_OPTIONS(pfile)->map_list;
- CPP_OPTIONS(pfile)->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. This function maps
- * filenames on file systems based on information read by
- * read_name_map. */
-
-static int
-open_include_file(cpp_reader * pfile, char *filename,
- file_name_list * searchptr)
-{
- struct file_name_map *map;
- const char *from;
- const char *p, *dir;
-
- if (searchptr && !searchptr->got_name_map)
- {
- searchptr->name_map = read_name_map(pfile,
- searchptr->fname
- ? searchptr->fname : ".");
- searchptr->got_name_map = 1;
- }
- /* First check the mapping for the directory we are using. */
- if (searchptr && searchptr->name_map)
- {
- from = filename;
- if (searchptr->fname)
- from += strlen(searchptr->fname) + 1;
- for (map = searchptr->name_map; map; map = map->map_next)
- {
- if (!strcmp(map->map_from, from))
- {
- /* Found a match. */
- return open(map->map_to, O_RDONLY, 0666);
- }
- }
- }
- /* 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. */
- p = strrchr(filename, '/');
- if (!p)
- p = filename;
- if (searchptr
- && searchptr->fname
- && strlen(searchptr->fname) == (unsigned)(p - filename)
- && !strncmp(searchptr->fname, filename, p - filename))
- {
- /* FILENAME is in SEARCHPTR, which we've already checked. */
- return open(filename, O_RDONLY, 0666);
- }
- if (p == filename)
- {
- dir = ".";
- from = filename;
- }
- else
- {
- char *s;
-
- s = (char *)alloca(p - filename + 1);
- memcpy(s, filename, p - filename);
- s[p - filename] = '\0';
- from = p + 1;
- dir = s;
- }
- for (map = read_name_map(pfile, dir); map; map = map->map_next)
- if (!strcmp(map->map_from, from))
- return open(map->map_to, O_RDONLY, 0666);
-
- return open(filename, O_RDONLY, 0666);
-}
-
-#else
-
-static int
-open_include_file(cpp_reader * pfile __UNUSED__, char *filename,
- file_name_list * searchptr __UNUSED__)
-{
- return open(filename, O_RDONLY, 0666);
-}
-
-#endif /* USE_FILE_NAME_MAPS */
-
-/* Process the contents of include file FNAME, already open on descriptor F,
- * 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 or via the current directory.
- * Return 1 on success, 0 on failure.
- *
- * The caller is responsible for the cpp_push_buffer. */
-
-static int
-finclude(cpp_reader * pfile, int f, const char *fname, int system_header_p,
- file_name_list * dirptr)
-{
- int st_mode;
- long st_size;
- long i;
- int length;
- cpp_buffer *fp; /* For input stack frame */
-
- if (file_size_and_mode(f, &st_mode, &st_size) < 0)
- {
- cpp_perror_with_name(pfile, fname);
- close(f);
- cpp_pop_buffer(pfile);
- return 0;
- }
- fp = CPP_BUFFER(pfile);
- fp->nominal_fname = fp->fname = fname;
- fp->dir = dirptr;
- fp->system_header_p = system_header_p;
- fp->lineno = 1;
- fp->colno = 1;
- fp->cleanup = file_cleanup;
-
- if (S_ISREG(st_mode))
- {
- fp->buf = (unsigned char *)xmalloc(st_size + 2);
- fp->alimit = fp->buf + st_size + 2;
- fp->cur = fp->buf;
-
- /* Read the file contents, knowing that st_size is an upper bound
- * on the number of bytes we can read. */
- length = safe_read(f, (char *)fp->buf, st_size);
- fp->rlimit = fp->buf + length;
- if (length < 0)
- goto nope;
- }
- else if (S_ISDIR(st_mode))
- {
- cpp_error(pfile, "directory `%s' specified in #include", fname);
- close(f);
- return 0;
- }
- 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;
-
- st_size = 0;
- fp->buf = (unsigned 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 = (unsigned char *)xrealloc(fp->buf, bsize + 2);
- }
- length = st_size;
- }
-
- if ((length > 0 && fp->buf[length - 1] != '\n')
- /* Backslash-newline at end is not good enough. */
- || (length > 1 && fp->buf[length - 2] == '\\'))
- {
- fp->buf[length++] = '\n';
- }
- fp->buf[length] = '\0';
- fp->rlimit = fp->buf + length;
-
- /* 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. */
-
- pfile->input_stack_listing_current = 0;
-
- return 1;
-
- nope:
-
- cpp_perror_with_name(pfile, fname);
- close(f);
- free(fp->buf);
- return 1;
-}
-
-int
-push_parse_file(cpp_reader * pfile, const char *fname)
-{
- struct cpp_options *opts = CPP_OPTIONS(pfile);
- struct cpp_pending *pend;
- char *p;
- int f;
- cpp_buffer *fp;
-
- /* 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. */
- struct default_include *include_defaults = include_defaults_array;
-
- /* 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. */
- p = (char *)getenv("CPATH");
- if (p && !opts->no_standard_includes)
- path_include(pfile, p);
-
- /* Now that dollars_in_ident is known, initialize is_idchar. */
- initialize_char_syntax(opts);
-
- /* Do partial setup of input buffer for the sake of generating
- * early #line directives (when -g is in effect). */
- fp = cpp_push_buffer(pfile, NULL, 0);
- if (!opts->in_fname)
- opts->in_fname = "";
- fp->nominal_fname = fp->fname = opts->in_fname;
- fp->lineno = 0;
-
- /* Install __LINE__, etc. Must follow initialize_char_syntax
- * and option processing. */
- initialize_builtins(pfile);
-
- /* Do standard #defines and assertions
- * that identify system and machine type. */
-
- if (!opts->inhibit_predefs)
- {
- p = (char *)alloca(strlen(predefs) + 1);
-
- strcpy(p, predefs);
- while (*p)
- {
- char *q;
-
- while (*p == ' ' || *p == '\t')
- p++;
- /* Handle -D options. */
- if (p[0] == '-' && p[1] == 'D')
- {
- q = &p[2];
- while (*p && *p != ' ' && *p != '\t')
- p++;
- if (*p != 0)
- *p++ = 0;
- if (opts->debug_output)
- output_line_command(pfile, 0, same_file);
- cpp_define(pfile, (unsigned char *)q);
- while (*p == ' ' || *p == '\t')
- p++;
- }
- else if (p[0] == '-' && p[1] == 'A')
- {
- /* Handle -A options (assertions). */
- char *assertion;
- char *past_name;
- char *value;
- char *past_value;
- char *termination;
- int save_char;
-
- assertion = &p[2];
- past_name = assertion;
- /* Locate end of name. */
- while (*past_name && *past_name != ' '
- && *past_name != '\t' && *past_name != '(')
- past_name++;
- /* Locate `(' at start of value. */
- value = past_name;
- while (*value && (*value == ' ' || *value == '\t'))
- value++;
- if (*value++ != '(')
- abort();
- while (*value && (*value == ' ' || *value == '\t'))
- value++;
- past_value = value;
- /* Locate end of value. */
- while (*past_value && *past_value != ' '
- && *past_value != '\t' && *past_value != ')')
- past_value++;
- termination = past_value;
- while (*termination
- && (*termination == ' ' || *termination == '\t'))
- termination++;
- if (*termination++ != ')')
- abort();
- if (*termination && *termination != ' '
- && *termination != '\t')
- abort();
- /* Temporarily null-terminate the value. */
- save_char = *termination;
- *termination = '\0';
- /* Install the assertion. */
- make_assertion(pfile, "-A", assertion);
- *termination = (char)save_char;
- p = termination;
- while (*p == ' ' || *p == '\t')
- p++;
- }
- else
- {
- abort();
- }
- }
- }
- /* Now handle the command line options. */
-
- /* Do -U's, -D's and -A's in the order they were seen. */
- /* First reverse the list. */
- opts->pending = nreverse_pending(opts->pending);
-
- for (pend = opts->pending; pend; pend = pend->next)
- {
- if (pend->cmd && pend->cmd[0] == '-')
- {
- switch (pend->cmd[1])
- {
- case 'U':
- if (opts->debug_output)
- output_line_command(pfile, 0, same_file);
- do_undef(pfile, NULL, (unsigned char *)pend->arg,
- (unsigned char *)pend->arg + strlen(pend->arg));
- break;
- case 'D':
- if (opts->debug_output)
- output_line_command(pfile, 0, same_file);
- cpp_define(pfile, (unsigned char *)pend->arg);
- break;
- case 'A':
- make_assertion(pfile, "-A", pend->arg);
- break;
- }
- }
- }
-
- opts->done_initializing = 1;
-
- { /* read the appropriate environment variable and if it exists
- * replace include_defaults with the listed path. */
- char *epath = 0;
-
- switch ((opts->objc << 1) + opts->cplusplus)
- {
- case 0:
- epath = getenv("C_INCLUDE_PATH");
- break;
- case 1:
- epath = getenv("CPLUS_INCLUDE_PATH");
- break;
- case 2:
- epath = getenv("OBJC_INCLUDE_PATH");
- break;
- case 3:
- epath = getenv("OBJCPLUS_INCLUDE_PATH");
- break;
- }
- /* If the environment var for this language is set,
- * add to the default list of include directories. */
- if (epath)
- {
- char *nstore = (char *)alloca(strlen(epath) + 2);
- 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)
- {
- /* Handle cases like c:/usr/lib:d:/gcc/lib */
- if ((*endp == PATH_SEPARATOR) || *endp == 0)
- {
- strncpy(nstore, startp, endp - startp);
- if (endp == startp)
- strcpy(nstore, ".");
- else
- nstore[endp - startp] = '\0';
-
- include_defaults[num_dirs].fname = savestring(nstore);
- include_defaults[num_dirs].cplusplus = opts->cplusplus;
- include_defaults[num_dirs].cxx_aware = 1;
- num_dirs++;
- if (*endp == '\0')
- break;
- endp = startp = endp + 1;
- }
- else
- endp++;
- }
- /* Put the usual defaults back in at the end. */
- memcpy((char *)&include_defaults[num_dirs],
- (char *)include_defaults_array,
- sizeof(include_defaults_array));
- }
- }
-
- append_include_chain(pfile, opts->before_system, opts->last_before_system);
- opts->first_system_include = opts->before_system;
-
- /* Unless -fnostdinc,
- * tack on the standard include file dirs to the specified list */
- if (!opts->no_standard_includes)
- {
- struct default_include *di = include_defaults;
- char *specd_prefix = opts->include_prefix;
- char *default_prefix = savestring(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 && default_len != 0)
- for (di = include_defaults; di->fname; di++)
- {
- /* Some standard dirs are only for C++. */
- if (!di->cplusplus
- || (opts->cplusplus
- && !opts->no_standard_cplusplus_includes))
- {
- /* Does this dir start with the prefix? */
- if (!strncmp(di->fname, default_prefix, default_len))
- {
- /* Yes; change prefix and add to search list. */
- file_name_list *new_
- =
- (file_name_list *) xmalloc(sizeof(file_name_list));
- int this_len =
- strlen(specd_prefix) + strlen(di->fname) -
- default_len;
- char *str =
- (char *)xmalloc(this_len + 1);
-
- strcpy(str, specd_prefix);
- strcat(str, di->fname + default_len);
- new_->fname = str;
- new_->control_macro = 0;
- new_->c_system_include_path = !di->cxx_aware;
- new_->got_name_map = 0;
- append_include_chain(pfile, new_, new_);
- if (!opts->first_system_include)
- opts->first_system_include = new_;
- }
- }
- }
- /* Search ordinary names for GNU include directories. */
- for (di = include_defaults; di->fname; di++)
- {
- /* Some standard dirs are only for C++. */
- if (!di->cplusplus
- || (opts->cplusplus && !opts->no_standard_cplusplus_includes))
- {
- file_name_list *new_
- = (file_name_list *) xmalloc(sizeof(file_name_list));
-
- new_->control_macro = 0;
- new_->c_system_include_path = !di->cxx_aware;
- new_->fname = (char *)di->fname;
- new_->got_name_map = 0;
- append_include_chain(pfile, new_, new_);
- if (!opts->first_system_include)
- opts->first_system_include = new_;
- }
- }
- }
- /* Tack the after_include chain at the end of the include chain. */
- append_include_chain(pfile, opts->after_include, opts->last_after_include);
- if (!opts->first_system_include)
- opts->first_system_include = opts->after_include;
-
- /* With -v, print the list of dirs to search. */
- if (opts->verbose)
- {
- file_name_list *fl;
-
- fprintf(stderr, "#include \"...\" search starts here:\n");
- for (fl = opts->include; fl; fl = fl->next)
- {
- if (fl == opts->first_bracket_include)
- fprintf(stderr, "#include <...> search starts here:\n");
- fprintf(stderr, " %s\n", fl->fname);
- }
- fprintf(stderr, "End of search list.\n");
- }
- /* Scan the -imacros files before the main input.
- * Much like #including them, but with no_output set
- * so that only their macro definitions matter. */
-
- opts->no_output++;
- pfile->no_record_file++;
- for (pend = opts->pending; pend; pend = pend->next)
- {
- if (pend->cmd && strcmp(pend->cmd, "-imacros") == 0)
- {
- int fd = open(pend->arg, O_RDONLY, 0666);
-
- if (fd < 0)
- {
- cpp_perror_with_name(pfile, pend->arg);
- return FATAL_EXIT_CODE;
- }
- cpp_push_buffer(pfile, NULL, 0);
- finclude(pfile, fd, pend->arg, 0, NULL);
- cpp_scan_buffer(pfile);
- }
- }
- opts->no_output--;
- pfile->no_record_file--;
-
- /* Copy the entire contents of the main input file into
- * the stacked input buffer previously allocated for it. */
- if (!fname || *fname == 0)
- {
- fname = "";
- f = 0;
- }
- else if ((f = open(fname, O_RDONLY, 0666)) < 0)
- cpp_pfatal_with_name(pfile, fname);
-
- /* -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 (opts->print_deps_missing_files
- && (opts->print_deps == 0 || !opts->no_output))
- cpp_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 (opts->print_deps == 0
- && (getenv("SUNPRO_DEPENDENCIES") != 0
- || getenv("DEPENDENCIES_OUTPUT") != 0))
- {
- char *spec = getenv("DEPENDENCIES_OUTPUT");
- char *s;
- char *output_file;
-
- if (!spec)
- {
- spec = getenv("SUNPRO_DEPENDENCIES");
- opts->print_deps = 2;
- }
- else
- opts->print_deps = 1;
-
- s = spec;
- /* Find the space before the DEPS_TARGET, if there is one. */
- /* This should use index. (mrs) */
- while (*s != 0 && *s != ' ')
- s++;
- if (*s != 0)
- {
- opts->deps_target = s + 1;
- output_file = (char *)xmalloc(s - spec + 1);
- memcpy(output_file, spec, s - spec);
- output_file[s - spec] = 0;
- }
- else
- {
- opts->deps_target = 0;
- output_file = spec;
- }
-
- opts->deps_file = output_file;
- opts->print_deps_append = 1;
- }
- /* For -M, print the expected object file name
- * as the target of this Make-rule. */
- if (opts->print_deps)
- {
- pfile->deps_allocated_size = 200;
- pfile->deps_buffer = (char *)xmalloc(pfile->deps_allocated_size);
- pfile->deps_buffer[0] = 0;
- pfile->deps_size = 0;
- pfile->deps_column = 0;
-
- if (opts->deps_target)
- deps_output(pfile, opts->deps_target, ':');
- else if (*opts->in_fname == 0)
- deps_output(pfile, "-", ':');
- else
- {
- char *q;
- int len;
-
- /* Discard all directory prefixes from filename. */
- if ((q = (char *)strrchr(opts->in_fname, '/'))
-#ifdef DIR_SEPARATOR
- && (q = strrchr(opts->in_fname, DIR_SEPARATOR))
-#endif
- )
- ++q;
- else
- q = (char *)opts->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] == '.' && strchr("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, ".o");
-
- deps_output(pfile, p, ':');
- deps_output(pfile, opts->in_fname, ' ');
- }
- }
-
- /* Scan the -include files before the main input.
- * We push these in reverse order, so that the first one is handled first. */
-
- pfile->no_record_file++;
- opts->pending = nreverse_pending(opts->pending);
- for (pend = opts->pending; pend; pend = pend->next)
- {
- if (pend->cmd && strcmp(pend->cmd, "-include") == 0)
- {
- int fd = open(pend->arg, O_RDONLY, 0666);
-
- if (fd < 0)
- {
- cpp_perror_with_name(pfile, pend->arg);
- return FATAL_EXIT_CODE;
- }
- cpp_push_buffer(pfile, NULL, 0);
- finclude(pfile, fd, pend->arg, 0, NULL);
- }
- }
- pfile->no_record_file--;
-
- /* Free the pending list. */
- for (pend = opts->pending; pend;)
- {
- struct cpp_pending *next = pend->next;
-
- free(pend);
- pend = next;
- }
- opts->pending = NULL;
-
- if (finclude(pfile, f, fname, 0, NULL))
- output_line_command(pfile, 0, same_file);
- return SUCCESS_EXIT_CODE;
-}
-
-void
-init_parse_file(cpp_reader * pfile)
-{
- memset((char *)pfile, 0, sizeof(cpp_reader));
- pfile->get_token = cpp_get_token;
-
- pfile->token_buffer_size = 200;
- pfile->token_buffer = (unsigned char *)xmalloc(pfile->token_buffer_size);
- CPP_SET_WRITTEN(pfile, 0);
-
- pfile->system_include_depth = 0;
- pfile->dont_repeat_files = 0;
- pfile->all_include_files = 0;
- pfile->max_include_len = 0;
- pfile->timebuf = NULL;
- pfile->only_seen_white = 1;
- pfile->buffer = CPP_NULL_BUFFER(pfile);
-}
-
-static struct cpp_pending *
-nreverse_pending(struct cpp_pending *list)
-{
- struct cpp_pending *prev = 0, *next, *pend;
-
- for (pend = list; pend; pend = next)
- {
- next = pend->next;
- pend->next = prev;
- prev = pend;
- }
- return prev;
-}
-
-static void
-push_pending(cpp_reader * pfile, const char *cmd, const char *arg)
-{
- struct cpp_pending *pend
- = (struct cpp_pending *)xmalloc(sizeof(struct cpp_pending));
-
- pend->cmd = cmd;
- pend->arg = arg;
- pend->next = CPP_OPTIONS(pfile)->pending;
- CPP_OPTIONS(pfile)->pending = pend;
-}
-
-/* Handle command-line options in (argc, argv).
- * Can be called multiple times, to handle multiple sets of options.
- * Returns if an unrecognized option is seen.
- * Returns number of handled arguments. */
-
-int
-cpp_handle_options(cpp_reader * pfile, int argc, char **argv)
-{
- int i;
- struct cpp_options *opts = CPP_OPTIONS(pfile);
-
- for (i = 0; i < argc; i++)
- {
- if (argv[i][0] != '-')
- {
- if (opts->out_fname)
- cpp_fatal("Usage: %s [switches] input output", argv[0]);
- else if (opts->in_fname)
- opts->out_fname = argv[i];
- else
- opts->in_fname = argv[i];
- }
- else
- {
- switch (argv[i][1])
- {
-
- case 'i':
- if (!strcmp(argv[i], "-include")
- || !strcmp(argv[i], "-imacros"))
- {
- if (i + 1 == argc)
- cpp_fatal("Filename missing after `%s' option",
- argv[i]);
- else
- push_pending(pfile, argv[i], argv[i + 1]), i++;
- }
- if (!strcmp(argv[i], "-iprefix"))
- {
- if (i + 1 == argc)
- cpp_fatal("Filename missing after `-iprefix' option");
- else
- opts->include_prefix = argv[++i];
- }
- if (!strcmp(argv[i], "-ifoutput"))
- {
- opts->output_conditionals = 1;
- }
- if (!strcmp(argv[i], "-isystem"))
- {
- file_name_list *dirtmp;
-
- if (i + 1 == argc)
- cpp_fatal("Filename missing after `-isystem' option");
-
- dirtmp =
- (file_name_list *) xmalloc(sizeof(file_name_list));
-
- dirtmp->next = 0;
- dirtmp->control_macro = 0;
- dirtmp->c_system_include_path = 1;
- dirtmp->fname = (char *)xmalloc(strlen(argv[i + 1]) + 1);
- strcpy(dirtmp->fname, argv[++i]);
- dirtmp->got_name_map = 0;
-
- if (!opts->before_system)
- opts->before_system = dirtmp;
- else
- opts->last_before_system->next = dirtmp;
- opts->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"))
- {
- file_name_list *dirtmp;
- char *prefix;
-
- if (opts->include_prefix)
- prefix = opts->include_prefix;
- else
- {
- prefix = savestring(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 =
- (file_name_list *) xmalloc(sizeof(file_name_list));
-
- dirtmp->next = 0; /* New one goes on the end */
- dirtmp->control_macro = 0;
- dirtmp->c_system_include_path = 0;
- if (i + 1 == argc)
- cpp_fatal
- ("Directory name missing after `-iwithprefix' option");
-
- dirtmp->fname = (char *)xmalloc(strlen(argv[i + 1])
- + strlen(prefix) + 1);
- strcpy(dirtmp->fname, prefix);
- strcat(dirtmp->fname, argv[++i]);
- dirtmp->got_name_map = 0;
-
- if (!opts->after_include)
- opts->after_include = dirtmp;
- else
- opts->last_after_include->next = dirtmp;
- opts->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"))
- {
- file_name_list *dirtmp;
- char *prefix;
-
- if (opts->include_prefix)
- prefix = opts->include_prefix;
- else
- {
- prefix = savestring(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 =
- (file_name_list *) xmalloc(sizeof(file_name_list));
-
- dirtmp->next = 0; /* New one goes on the end */
- dirtmp->control_macro = 0;
- dirtmp->c_system_include_path = 0;
- if (i + 1 == argc)
- cpp_fatal
- ("Directory name missing after `-iwithprefixbefore' option");
-
- dirtmp->fname = (char *)xmalloc(strlen(argv[i + 1])
- + strlen(prefix) + 1);
- strcpy(dirtmp->fname, prefix);
- strcat(dirtmp->fname, argv[++i]);
- dirtmp->got_name_map = 0;
-
- append_include_chain(pfile, dirtmp, dirtmp);
- }
- /* Add directory to end of path for includes. */
- if (!strcmp(argv[i], "-idirafter"))
- {
- file_name_list *dirtmp;
-
- dirtmp =
- (file_name_list *) xmalloc(sizeof(file_name_list));
-
- dirtmp->next = 0; /* New one goes on the end */
- dirtmp->control_macro = 0;
- dirtmp->c_system_include_path = 0;
- if (i + 1 == argc)
- cpp_fatal
- ("Directory name missing after `-idirafter' option");
- else
- dirtmp->fname = argv[++i];
- dirtmp->got_name_map = 0;
-
- if (!opts->after_include)
- opts->after_include = dirtmp;
- else
- opts->last_after_include->next = dirtmp;
- opts->last_after_include = dirtmp; /* Tail follows the last one */
- }
- break;
-
- case 'o':
- if (opts->out_fname)
- cpp_fatal("Output filename specified twice");
- if (i + 1 == argc)
- cpp_fatal("Filename missing after -o option");
- opts->out_fname = argv[++i];
- if (!strcmp(opts->out_fname, "-"))
- opts->out_fname = "";
- break;
-
- case 'p':
- if (!strcmp(argv[i], "-pedantic"))
- CPP_PEDANTIC(pfile) = 1;
- else if (!strcmp(argv[i], "-pedantic-errors"))
- {
- CPP_PEDANTIC(pfile) = 1;
- opts->pedantic_errors = 1;
- }
- break;
-
- case 't':
- if (!strcmp(argv[i], "-traditional"))
- {
- opts->traditional = 1;
- if (opts->dollars_in_ident > 0)
- opts->dollars_in_ident = 1;
- }
- else if (!strcmp(argv[i], "-trigraphs"))
- {
- if (!opts->chill)
- opts->no_trigraphs = 0;
- }
- break;
-
- case 'l':
- if (!strcmp(argv[i], "-lang-c"))
- opts->cplusplus = 0, opts->cplusplus_comments =
- 0, opts->objc = 0;
- if (!strcmp(argv[i], "-lang-c++"))
- opts->cplusplus = 1, opts->cplusplus_comments =
- 1, opts->objc = 0;
- if (!strcmp(argv[i], "-lang-c-c++-comments"))
- opts->cplusplus = 0, opts->cplusplus_comments =
- 1, opts->objc = 0;
- if (!strcmp(argv[i], "-lang-objc"))
- opts->objc = 1, opts->cplusplus =
- 0, opts->cplusplus_comments = 1;
- if (!strcmp(argv[i], "-lang-objc++"))
- opts->objc = 1, opts->cplusplus =
- 1, opts->cplusplus_comments = 1;
- if (!strcmp(argv[i], "-lang-asm"))
- opts->lang_asm = 1;
- if (!strcmp(argv[i], "-lint"))
- opts->for_lint = 1;
- if (!strcmp(argv[i], "-lang-chill"))
- opts->objc = 0, opts->cplusplus = 0, opts->chill = 1,
- opts->traditional = 1, opts->no_trigraphs = 1;
- break;
-
- case '+':
- opts->cplusplus = 1, opts->cplusplus_comments = 1;
- break;
-
- case 'w':
- opts->inhibit_warnings = 1;
- break;
-
- case 'W':
- if (!strcmp(argv[i], "-Wtrigraphs"))
- opts->warn_trigraphs = 1;
- else if (!strcmp(argv[i], "-Wno-trigraphs"))
- opts->warn_trigraphs = 0;
- else if (!strcmp(argv[i], "-Wcomment"))
- opts->warn_comments = 1;
- else if (!strcmp(argv[i], "-Wno-comment"))
- opts->warn_comments = 0;
- else if (!strcmp(argv[i], "-Wcomments"))
- opts->warn_comments = 1;
- else if (!strcmp(argv[i], "-Wno-comments"))
- opts->warn_comments = 0;
- else if (!strcmp(argv[i], "-Wtraditional"))
- opts->warn_stringify = 1;
- else if (!strcmp(argv[i], "-Wno-traditional"))
- opts->warn_stringify = 0;
- else if (!strcmp(argv[i], "-Wimport"))
- opts->warn_import = 1;
- else if (!strcmp(argv[i], "-Wno-import"))
- opts->warn_import = 0;
- else if (!strcmp(argv[i], "-Werror"))
- opts->warnings_are_errors = 1;
- else if (!strcmp(argv[i], "-Wno-error"))
- opts->warnings_are_errors = 0;
- else if (!strcmp(argv[i], "-Wall"))
- {
- opts->warn_trigraphs = 1;
- opts->warn_comments = 1;
- }
- 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"))
- {
- opts->print_deps_missing_files = 1;
- break;
- }
- if (!strcmp(argv[i], "-M"))
- opts->print_deps = 2;
- else if (!strcmp(argv[i], "-MM"))
- opts->print_deps = 1;
- else if (!strcmp(argv[i], "-MD"))
- opts->print_deps = 2;
- else if (!strcmp(argv[i], "-MMD"))
- opts->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)
- cpp_fatal("Filename missing after %s option",
- argv[i]);
- opts->deps_file = argv[++i];
- }
- else
- {
- /* For -M and -MM, write deps on standard output
- * and suppress the usual output. */
- opts->no_output = 1;
- }
- break;
-
- case 'd':
- {
- char *p = argv[i] + 2;
- char c;
-
- while ((c = *p++) != 0)
- {
- /* Arg to -d specifies what parts of macros to dump */
- switch (c)
- {
- case 'M':
- opts->dump_macros = dump_only;
- opts->no_output = 1;
- break;
- case 'N':
- opts->dump_macros = dump_names;
- break;
- case 'D':
- opts->dump_macros = dump_definitions;
- break;
- }
- }
- }
- break;
-
- case 'g':
- if (argv[i][2] == '3')
- opts->debug_output = 1;
- break;
-
- case 'v':
- fprintf(stderr, "GNU CPP version %s", version_string);
-#ifdef TARGET_VERSION
- TARGET_VERSION;
-#endif
- fprintf(stderr, "\n");
- opts->verbose = 1;
- break;
-
- case 'H':
- opts->print_include_names = 1;
- break;
-
- case 'D':
- if (argv[i][2] != 0)
- push_pending(pfile, "-D", argv[i] + 2);
- else if (i + 1 == argc)
- cpp_fatal("Macro name missing after -D option");
- else
- i++, push_pending(pfile, "-D", argv[i]);
- break;
-
- case 'A':
- {
- char *p = NULL;
-
- if (argv[i][2] != 0)
- p = argv[i] + 2;
- else if (i + 1 == argc)
- cpp_fatal("Assertion missing after -A option");
- else
- p = argv[++i];
-
- if (!strcmp(p, "-"))
- {
- struct cpp_pending **ptr;
-
- /* -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. */
-
- opts->inhibit_predefs = 1;
- for (ptr = &opts->pending; *ptr;)
- {
- struct cpp_pending *pend = *ptr;
-
- if (pend->cmd && pend->cmd[0] == '-'
- && (pend->cmd[1] == 'D'
- || pend->cmd[1] == 'A'))
- {
- *ptr = pend->next;
- free(pend);
- }
- else
- ptr = &pend->next;
- }
- }
- else
- {
- push_pending(pfile, "-A", p);
- }
- }
- break;
-
- case 'U': /* JF #undef something */
- if (argv[i][2] != 0)
- push_pending(pfile, "-U", argv[i] + 2);
- else if (i + 1 == argc)
- cpp_fatal("Macro name missing after -U option");
- else
- push_pending(pfile, "-U", argv[i + 1]), i++;
- break;
-
- case 'C':
- opts->put_out_comments = 1;
- break;
-
- case 'E': /* -E comes from cc -E; ignore it. */
- break;
-
- case 'P':
- opts->no_line_commands = 1;
- break;
-
- case '$': /* Don't include $ in identifiers. */
- opts->dollars_in_ident = 0;
- break;
-
- case 'I': /* Add directory to path for includes. */
- {
- file_name_list *dirtmp;
-
- if (!CPP_OPTIONS(pfile)->ignore_srcdir
- && !strcmp(argv[i] + 2, "-"))
- {
- CPP_OPTIONS(pfile)->ignore_srcdir = 1;
- /* Don't use any preceding -I directories for #include <...>. */
- CPP_OPTIONS(pfile)->first_bracket_include = 0;
- }
- else
- {
- dirtmp =
- (file_name_list *) xmalloc(sizeof(file_name_list));
-
- dirtmp->next = 0; /* New one goes on the end */
- dirtmp->control_macro = 0;
- dirtmp->c_system_include_path = 0;
- if (argv[i][2] != 0)
- dirtmp->fname = argv[i] + 2;
- else if (i + 1 == argc)
- cpp_fatal
- ("Directory name missing after -I option");
- else
- dirtmp->fname = argv[++i];
- dirtmp->got_name_map = 0;
- append_include_chain(pfile, 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. */
- opts->no_standard_includes = 1;
- else if (!strcmp(argv[i], "-nostdinc++"))
- /* -nostdinc++ causes no default C++-specific include directories. */
- opts->no_standard_cplusplus_includes = 1;
- break;
-
- case 'u':
- /* Sun compiler passes undocumented switch "-undef".
- * Let's assume it means to inhibit the predefined symbols. */
- opts->inhibit_predefs = 1;
- break;
-
- case '\0': /* JF handle '-' as file name meaning stdin or stdout */
- if (!opts->in_fname)
- {
- opts->in_fname = "";
- break;
- }
- else if (!opts->out_fname)
- {
- opts->out_fname = "";
- break;
- } /* else fall through into error */
- default:
- return i;
- }
- }
- }
- return i;
-}
-
-void
-cpp_finish(cpp_reader * pfile)
-{
- struct cpp_options *opts = CPP_OPTIONS(pfile);
-
- if (opts->print_deps)
- {
- /* Stream on which to print the dependency information. */
- FILE *deps_stream;
-
- /* Don't actually write the deps file if compilation has failed. */
- if (pfile->errors == 0)
- {
- const char *deps_mode =
- opts->print_deps_append ? "a" : "w";
-
- if (!opts->deps_file)
- deps_stream = stdout;
- else if (!(deps_stream = fopen(opts->deps_file, deps_mode)))
- cpp_pfatal_with_name(pfile, opts->deps_file);
- fputs(pfile->deps_buffer, deps_stream);
- putc('\n', deps_stream);
- if (opts->deps_file)
- {
- if (ferror(deps_stream) || fclose(deps_stream) != 0)
- cpp_fatal("I/O error on output");
- }
- }
- }
-}
-
-static int
-do_assert(cpp_reader * pfile, struct directive *keyword __UNUSED__,
- unsigned char *buf __UNUSED__, unsigned char *limit __UNUSED__)
-{
- long symstart; /* remember where symbol name starts */
- int c;
- int sym_length; /* and how long it is */
- struct arglist *tokens = NULL;
-
- if (CPP_PEDANTIC(pfile) && CPP_OPTIONS(pfile)->done_initializing
- && !CPP_BUFFER(pfile)->system_header_p)
- cpp_pedwarn(pfile, "ANSI C does not allow `#assert'");
-
- cpp_skip_hspace(pfile);
- symstart = CPP_WRITTEN(pfile); /* remember where it starts */
- parse_name(pfile, GETC());
- sym_length = check_macro_name(pfile, pfile->token_buffer + symstart,
- "assertion");
-
- cpp_skip_hspace(pfile);
- if (PEEKC() != '(')
- {
- cpp_error(pfile, "missing token-sequence in `#assert'");
- goto error;
- }
- {
- int error_flag = 0;
-
- tokens = read_token_list(pfile, &error_flag);
- if (error_flag)
- goto error;
- if (!tokens)
- {
- cpp_error(pfile, "empty token-sequence in `#assert'");
- goto error;
- }
- cpp_skip_hspace(pfile);
- c = PEEKC();
- if (c != EOF && c != '\n')
- cpp_pedwarn(pfile, "junk at end of `#assert'");
- skip_rest_of_line(pfile);
- }
-
- /* 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;
- const char *symname = (char *)pfile->token_buffer + symstart;
- int hashcode =
- hashf(symname, sym_length, ASSERTION_HASHSIZE);
- struct tokenlist_list *value =
- (struct tokenlist_list *)xmalloc(sizeof(struct tokenlist_list));
-
- hp = assertion_lookup(pfile, symname, sym_length, hashcode);
- if (!hp)
- {
- if (sym_length == 7 && !strncmp(symname, "defined", sym_length))
- cpp_error(pfile, "`defined' redefined as assertion");
- hp = assertion_install(pfile, 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;
- }
- CPP_SET_WRITTEN(pfile, symstart); /* Pop */
- return 0;
- error:
- CPP_SET_WRITTEN(pfile, symstart); /* Pop */
- skip_rest_of_line(pfile);
- return 1;
-}
-
-static int
-do_unassert(cpp_reader * pfile, struct directive *keyword __UNUSED__,
- unsigned char *buf __UNUSED__, unsigned char *limit __UNUSED__)
-{
- long symstart; /* remember where symbol name starts */
- int sym_length; /* and how long it is */
- int c;
-
- struct arglist *tokens = NULL;
- int tokens_specified = 0;
-
- if (CPP_PEDANTIC(pfile) && CPP_OPTIONS(pfile)->done_initializing
- && !CPP_BUFFER(pfile)->system_header_p)
- cpp_pedwarn(pfile, "ANSI C does not allow `#unassert'");
-
- cpp_skip_hspace(pfile);
-
- symstart = CPP_WRITTEN(pfile); /* remember where it starts */
- parse_name(pfile, GETC());
- sym_length = check_macro_name(pfile, pfile->token_buffer + symstart,
- "assertion");
-
- cpp_skip_hspace(pfile);
- if (PEEKC() == '(')
- {
- int error_flag = 0;
-
- tokens = read_token_list(pfile, &error_flag);
- if (error_flag)
- goto error;
- if (!tokens)
- {
- cpp_error(pfile, "empty token list in `#unassert'");
- goto error;
- }
- tokens_specified = 1;
- }
- cpp_skip_hspace(pfile);
- c = PEEKC();
- if (c != EOF && c != '\n')
- cpp_error(pfile, "junk at end of `#unassert'");
- skip_rest_of_line(pfile);
-
- {
- ASSERTION_HASHNODE *hp;
- const char *symname = (char *)pfile->token_buffer + symstart;
- int hashcode =
- hashf(symname, sym_length, ASSERTION_HASHSIZE);
- struct tokenlist_list *tail, *prev;
-
- hp = assertion_lookup(pfile, symname, sym_length, hashcode);
- if (!hp)
- return 1;
-
- /* If no token list was specified, then eliminate this assertion
- * entirely. */
- if (!tokens_specified)
- 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;
- }
- }
- }
-
- CPP_SET_WRITTEN(pfile, symstart); /* Pop */
- return 0;
- error:
- CPP_SET_WRITTEN(pfile, symstart); /* Pop */
- skip_rest_of_line(pfile);
- return 1;
-}
-
-/* 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. */
-
-static int
-check_assertion(cpp_reader * pfile, const char *name, int sym_length,
- int tokens_specified, struct arglist *tokens)
-{
- ASSERTION_HASHNODE *hp;
- int hashcode = hashf(name, sym_length, ASSERTION_HASHSIZE);
-
- if (CPP_PEDANTIC(pfile) && !CPP_BUFFER(pfile)->system_header_p)
- cpp_pedwarn(pfile, "ANSI C does not allow testing assertions");
-
- hp = assertion_lookup(pfile, name, sym_length, hashcode);
- if (!hp)
- /* 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(struct arglist *l1, struct arglist *l2)
-{
- while (l1 && l2)
- {
- if (l1->length != l2->length)
- return 0;
- if (strncmp(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;
-}
-
-struct arglist *
-reverse_token_list(struct arglist *tokens)
-{
- struct arglist *prev = 0, *cur, *next;
-
- for (cur = tokens; cur; cur = next)
- {
- next = cur->next;
- cur->next = prev;
- prev = cur;
- }
- return prev;
-}
-
-/* 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.) */
-
-static struct arglist *
-read_token_list(cpp_reader * pfile, int *error_flag)
-{
- struct arglist *token_ptrs = 0;
- int depth = 1;
- int length;
-
- *error_flag = 0;
- FORWARD(1); /* Skip '(' */
-
- /* Loop over the assertion value tokens. */
- while (depth > 0)
- {
- struct arglist *temp;
- long name_written = CPP_WRITTEN(pfile);
- int c;
-
- cpp_skip_hspace(pfile);
-
- c = GETC();
-
- /* Find the end of the token. */
- if (c == '(')
- {
- CPP_PUTC(pfile, c);
- depth++;
- }
- else if (c == ')')
- {
- depth--;
- if (depth == 0)
- break;
- CPP_PUTC(pfile, c);
- }
- else if (c == '"' || c == '\'')
- {
- FORWARD(-1);
- cpp_get_token(pfile);
- }
- else if (c == '\n')
- break;
- else
- {
- while (c != EOF && !is_space[c] && c != '(' && c != ')'
- && c != '"' && c != '\'')
- {
- CPP_PUTC(pfile, c);
- c = GETC();
- }
- if (c != EOF)
- FORWARD(-1);
- }
-
- length = CPP_WRITTEN(pfile) - name_written;
- temp = (struct arglist *)xmalloc(sizeof(struct arglist) + length + 1);
-
- temp->name = (char *)(temp + 1);
- memcpy(temp->name, (char *)(pfile->token_buffer + name_written),
- length);
- temp->name[length] = 0;
- temp->next = token_ptrs;
- token_ptrs = temp;
- temp->length = length;
-
- CPP_ADJUST_WRITTEN(pfile, -length); /* pop */
-
- if (c == EOF || c == '\n')
- { /* FIXME */
- cpp_error(pfile,
- "unterminated token sequence following `#' operator");
- return 0;
- }
- }
-
- /* We accumulated the names in reverse order.
- * Now reverse them to get the proper order. */
- return reverse_token_list(token_ptrs);
-}
-
-static void
-free_token_list(struct arglist *tokens)
-{
- while (tokens)
- {
- struct arglist *next = tokens->next;
-
- free(tokens->name);
- free(tokens);
- tokens = next;
- }
-}
-
-/* Get the file-mode and data size of the file open on FD
- * and store them in *MODE_POINTER and *SIZE_POINTER. */
-
-static int
-file_size_and_mode(int fd, int *mode_pointer, long int *size_pointer)
-{
- struct stat sbuf;
-
- if (fstat(fd, &sbuf) < 0)
- return (-1);
- if (mode_pointer)
- *mode_pointer = sbuf.st_mode;
- if (size_pointer)
- *size_pointer = sbuf.st_size;
- return 0;
-}
-
-/* Read LEN bytes at PTR from descriptor DESC, for file FILENAME,
- * retrying if necessary. 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(int desc, char *ptr, int len)
-{
- int left = len;
-
- while (left > 0)
- {
- int nchars = read(desc, ptr, left);
-
- if (nchars < 0)
- {
-#ifdef EINTR
- if (errno == EINTR)
- continue;
-#endif
- return nchars;
- }
- if (nchars == 0)
- break;
- ptr += nchars;
- left -= nchars;
- }
- return len - left;
-}
-
-static char *
-savestring(const char *input)
-{
- unsigned size = strlen(input);
- char *output = (char *)xmalloc(size + 1);
-
- strcpy(output, input);
- return output;
-}
-
-/* Initialize PMARK to remember the current position of PFILE. */
-void
-parse_set_mark(struct parse_marker *pmark, cpp_reader * pfile)
-{
- cpp_buffer *pbuf = CPP_BUFFER(pfile);
-
- pmark->next = pbuf->marks;
- pbuf->marks = pmark;
- pmark->buf = pbuf;
- pmark->position = pbuf->cur - pbuf->buf;
-}
-
-/* Cleanup PMARK - we no longer need it. */
-static void
-parse_clear_mark(struct parse_marker *pmark)
-{
- struct parse_marker **pp = &pmark->buf->marks;
-
- for (;; pp = &(*pp)->next)
- {
- if (!*pp)
- cpp_fatal("internal error", "in parse_set_mark");
- if (*pp == pmark)
- break;
- }
- *pp = pmark->next;
-}
-
-/* Backup the current position of PFILE to that saved in PMARK. */
-
-static void
-parse_goto_mark(struct parse_marker *pmark, cpp_reader * pfile)
-{
- cpp_buffer *pbuf = CPP_BUFFER(pfile);
-
- if (pbuf != pmark->buf)
- cpp_fatal("internal error %s", "parse_goto_mark");
- pbuf->cur = pbuf->buf + pmark->position;
-}
-
-/* Reset PMARK to point to the current position of PFILE. (Same
- * as parse_clear_mark (PMARK), parse_set_mark (PMARK, PFILE) but faster. */
-
-static void
-parse_move_mark(struct parse_marker *pmark, cpp_reader * pfile)
-{
- cpp_buffer *pbuf = CPP_BUFFER(pfile);
-
- if (pbuf != pmark->buf)
- cpp_fatal("internal error %s", "parse_move_mark");
- pmark->position = pbuf->cur - pbuf->buf;
-}
-
-int
-cpp_read_check_assertion(cpp_reader * pfile)
-{
- int name_start = CPP_WRITTEN(pfile);
- int name_length, name_written;
- int result;
-
- FORWARD(1); /* Skip '#' */
- cpp_skip_hspace(pfile);
- parse_name(pfile, GETC());
- name_written = CPP_WRITTEN(pfile);
- name_length = name_written - name_start;
- cpp_skip_hspace(pfile);
- if (CPP_BUF_PEEK(CPP_BUFFER(pfile)) == '(')
- {
- int error_flag;
- struct arglist *token_ptrs = read_token_list(pfile, &error_flag);
-
- result = check_assertion(pfile,
- (char *)pfile->token_buffer + name_start,
- name_length, 1, token_ptrs);
- }
- else
- result = check_assertion(pfile,
- (char *)pfile->token_buffer + name_start,
- name_length, 0, NULL);
- CPP_ADJUST_WRITTEN(pfile, -name_length); /* pop */
- return result;
-}
-
-static void
-cpp_print_file_and_line(cpp_reader * pfile)
-{
- cpp_buffer *ip = cpp_file_buffer(pfile);
-
- if (ip)
- {
- long line, col;
-
- cpp_buf_line_and_col(ip, &line, &col);
- cpp_file_line_for_message(pfile, ip->nominal_fname,
- line, pfile->show_column ? col : -1);
- }
-}
-
-static void
-cpp_error_v(cpp_reader * pfile, const char *msg, va_list args)
-{
- cpp_print_containing_files(pfile);
- cpp_print_file_and_line(pfile);
- cpp_message_v(pfile, 1, msg, args);
-}
-
-void
-cpp_error(cpp_reader * pfile, const char *msg, ...)
-{
- va_list args;
-
- va_start(args, msg);
-
- cpp_error_v(pfile, msg, args);
-
- va_end(args);
-}
-
-/* Print error message but don't count it. */
-
-static void
-cpp_warning_v(cpp_reader * pfile, const char *msg, va_list args)
-{
- if (CPP_OPTIONS(pfile)->inhibit_warnings)
- return;
-
- if (CPP_OPTIONS(pfile)->warnings_are_errors)
- pfile->errors++;
-
- cpp_print_containing_files(pfile);
- cpp_print_file_and_line(pfile);
- cpp_message_v(pfile, 0, msg, args);
-}
-
-void
-cpp_warning(cpp_reader * pfile, const char *msg, ...)
-{
- va_list args;
-
- va_start(args, msg);
-
- cpp_warning_v(pfile, msg, args);
-
- va_end(args);
-}
-
-/* Print an error message and maybe count it. */
-
-void
-cpp_pedwarn(cpp_reader * pfile, const char *msg, ...)
-{
- va_list args;
-
- va_start(args, msg);
-
- if (CPP_OPTIONS(pfile)->pedantic_errors)
- cpp_error_v(pfile, msg, args);
- else
- cpp_warning_v(pfile, msg, args);
-
- va_end(args);
-}
-
-static void
-cpp_error_with_line(cpp_reader * pfile, int line, int column, const char *msg)
-{
- cpp_buffer *ip = cpp_file_buffer(pfile);
-
- cpp_print_containing_files(pfile);
-
- if (ip)
- cpp_file_line_for_message(pfile, ip->nominal_fname, line, column);
-
- cpp_message(pfile, 1, msg, NULL, NULL, NULL);
-}
-
-static void
-cpp_warning_with_line(cpp_reader * pfile, int line, int column, const char *msg)
-{
- cpp_buffer *ip;
-
- if (CPP_OPTIONS(pfile)->inhibit_warnings)
- return;
-
- if (CPP_OPTIONS(pfile)->warnings_are_errors)
- pfile->errors++;
-
- cpp_print_containing_files(pfile);
-
- ip = cpp_file_buffer(pfile);
-
- if (ip)
- cpp_file_line_for_message(pfile, ip->nominal_fname, line, column);
-
- cpp_message(pfile, 0, msg, NULL, NULL, NULL);
-}
-
-static void
-cpp_pedwarn_with_line(cpp_reader * pfile, int line, int column, const char *msg)
-{
- if (CPP_OPTIONS(pfile)->pedantic_errors)
- cpp_error_with_line(pfile, column, line, msg);
- else
- cpp_warning_with_line(pfile, line, column, msg);
-}
-
-/* Report a warning (or an error if pedantic_errors)
- * giving specified file name and line number, not current. */
-
-void
-cpp_pedwarn_with_file_and_line(cpp_reader * pfile,
- const char *file, int line,
- const char *msg, const char *arg1,
- const char *arg2, const char *arg3)
-{
- if (!CPP_OPTIONS(pfile)->pedantic_errors
- && CPP_OPTIONS(pfile)->inhibit_warnings)
- return;
- if (file)
- cpp_file_line_for_message(pfile, file, line, -1);
- cpp_message(pfile, CPP_OPTIONS(pfile)->pedantic_errors,
- msg, arg1, arg2, arg3);
-}
-
-/* This defines "errno" properly for VMS, and gives us EACCES. */
-#include <errno.h>
-#ifndef errno
-extern int errno;
-
-#endif
-
-#ifndef HAVE_STRERROR
-extern int sys_nerr;
-
-#if defined(bsd4_4)
-extern const char *const sys_errlist[];
-
-#else
-extern char *sys_errlist[];
-
-#endif
-#endif /* HAVE_STRERROR */
-
-/*
- * my_strerror - return the descriptive text associated with an `errno' code.
- */
-
-static const char *
-my_strerror(int errnum)
-{
- const char *result;
-
-#ifndef HAVE_STRERROR
- result = ((errnum < sys_nerr) ? sys_errlist[errnum] : 0);
-#else
- result = strerror(errnum);
-#endif
-
- if (!result)
- result = "undocumented I/O error";
-
- return result;
-}
-
-/* Error including a message from `errno'. */
-
-static void
-cpp_error_from_errno(cpp_reader * pfile, const char *name)
-{
- cpp_buffer *ip = cpp_file_buffer(pfile);
-
- cpp_print_containing_files(pfile);
-
- if (ip)
- cpp_file_line_for_message(pfile, ip->nominal_fname, ip->lineno, -1);
-
- cpp_message(pfile, 1, "%s: %s", name, my_strerror(errno), NULL);
-}
-
-void
-cpp_perror_with_name(cpp_reader * pfile, const char *name)
-{
- cpp_message(pfile, 1, "%s: %s: %s", progname, name, my_strerror(errno));
-}
-
-/* TODO:
- * No pre-compiled header file support.
- *
- * Possibly different enum token codes for each C/C++ token.
- *
- * Should clean up remaining directives to that do_XXX functions
- * only take two arguments and all have command_reads_line.
- *
- * Find and cleanup remaining uses of static variables,
- *
- * Support for trigraphs.
- *
- * Support -dM flag (dump_all_macros).
- *
- * Support for_lint flag.
- */
projects / framework / uifw / edje.git / commitdiff