diff options
Diffstat (limited to 'contrib/gcc/cppmain.c')
| -rw-r--r-- | contrib/gcc/cppmain.c | 432 | 
1 files changed, 0 insertions, 432 deletions
| diff --git a/contrib/gcc/cppmain.c b/contrib/gcc/cppmain.c deleted file mode 100644 index d49c6f857696c..0000000000000 --- a/contrib/gcc/cppmain.c +++ /dev/null @@ -1,432 +0,0 @@ -/* Preprocess only, using cpplib. -   Copyright (C) 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003 -   Free Software Foundation, Inc. -   Written by Per Bothner, 1994-95. - -This program is free software; you can redistribute it and/or modify it -under the terms of the GNU General Public License as published by the -Free Software Foundation; either version 2, or (at your option) any -later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - - 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!  */ - -#include "config.h" -#include "system.h" -#include "cpplib.h" -#include "cpphash.h" - -static void setup_callbacks PARAMS ((cpp_reader *)); - -/* General output routines.  */ -static void scan_translation_unit PARAMS ((cpp_reader *)); -static void scan_translation_unit_trad PARAMS ((cpp_reader *)); -static void account_for_newlines PARAMS ((cpp_reader *, const uchar *, -					  size_t)); -static int dump_macro PARAMS ((cpp_reader *, cpp_hashnode *, void *)); - -static void print_line PARAMS ((cpp_reader *, const struct line_map *, -				unsigned int, const char *)); -static void maybe_print_line PARAMS ((cpp_reader *, const struct line_map *, -				      unsigned int)); - -/* Callback routines for the parser.   Most of these are active only -   in specific modes.  */ -static void cb_line_change PARAMS ((cpp_reader *, const cpp_token *, int)); -static void cb_define	PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *)); -static void cb_undef	PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *)); -static void cb_include	PARAMS ((cpp_reader *, unsigned int, -				 const unsigned char *, const cpp_token *)); -static void cb_ident	  PARAMS ((cpp_reader *, unsigned int, -				   const cpp_string *)); -static void cb_file_change PARAMS ((cpp_reader *, const struct line_map *)); -static void cb_def_pragma PARAMS ((cpp_reader *, unsigned int)); - -/* Preprocess and output.  */ -void -cpp_preprocess_file (pfile, in_fname, out_stream) -     cpp_reader *pfile; -     const char *in_fname; -     FILE *out_stream; -{ -  /* Initialize the printer structure.  Setting print.line to -1 here -     is a trick to guarantee that the first token of the file will -     cause a linemarker to be output by maybe_print_line.  */ -  pfile->print.line = (unsigned int) -1; -  pfile->print.printed = 0; -  pfile->print.prev = 0; -  pfile->print.map = 0; -  pfile->print.outf = out_stream; - -  setup_callbacks (pfile); - -  if (cpp_read_main_file (pfile, in_fname, NULL)) -    { -      cpp_options *options = &pfile->opts; -      cpp_finish_options (pfile); - -      /* A successful cpp_read_main_file guarantees that we can call -	 cpp_scan_nooutput or cpp_get_token next.  */ -      if (options->no_output) -	{ -	  /* Scan -included buffers, then the main file.  */ -	  while (pfile->buffer->prev) -	    cpp_scan_nooutput (pfile); -	  cpp_scan_nooutput (pfile); -	} -      else if (options->traditional) -	scan_translation_unit_trad (pfile); -      else -	scan_translation_unit (pfile); - -      /* -dM command line option.  Should this be in cpp_finish?  */ -      if (options->dump_macros == dump_only) -	cpp_forall_identifiers (pfile, dump_macro, NULL); -    } - -  /* Flush any pending output.  */ -  if (pfile->print.printed) -    putc ('\n', pfile->print.outf); -} - -/* Set up the callbacks as appropriate.  */ -static void -setup_callbacks (pfile) -     cpp_reader *pfile; -{ -  cpp_options *options = &pfile->opts; -  cpp_callbacks *cb = cpp_get_callbacks (pfile); - -  if (! options->no_output) -    { -      cb->line_change = cb_line_change; -      /* Don't emit #pragma or #ident directives if we are processing -	 assembly language; the assembler may choke on them.  */ -      if (options->lang != CLK_ASM) -	{ -	  cb->ident      = cb_ident; -	  cb->def_pragma = cb_def_pragma; -	} -      if (! options->no_line_commands) -	cb->file_change = cb_file_change; -    } - -  if (options->dump_includes) -    cb->include  = cb_include; - -  if (options->dump_macros == dump_names -      || options->dump_macros == dump_definitions) -    { -      cb->define = cb_define; -      cb->undef  = cb_undef; -    } -} - -/* Writes out the preprocessed file, handling spacing and paste -   avoidance issues.  */ -static void -scan_translation_unit (pfile) -     cpp_reader *pfile; -{ -  bool avoid_paste = false; - -  pfile->print.source = NULL; -  for (;;) -    { -      const cpp_token *token = cpp_get_token (pfile); - -      if (token->type == CPP_PADDING) -	{ -	  avoid_paste = true; -	  if (pfile->print.source == NULL -	      || (!(pfile->print.source->flags & PREV_WHITE) -		  && token->val.source == NULL)) -	    pfile->print.source = token->val.source; -	  continue; -	} - -      if (token->type == CPP_EOF) -	break; - -      /* Subtle logic to output a space if and only if necessary.  */ -      if (avoid_paste) -	{ -	  if (pfile->print.source == NULL) -	    pfile->print.source = token; -	  if (pfile->print.source->flags & PREV_WHITE -	      || (pfile->print.prev -		  && cpp_avoid_paste (pfile, pfile->print.prev, token)) -	      || (pfile->print.prev == NULL && token->type == CPP_HASH)) -	    putc (' ', pfile->print.outf); -	} -      else if (token->flags & PREV_WHITE) -	putc (' ', pfile->print.outf); - -      avoid_paste = false; -      pfile->print.source = NULL; -      pfile->print.prev = token; -      cpp_output_token (token, pfile->print.outf); - -      if (token->type == CPP_COMMENT) -	account_for_newlines (pfile, token->val.str.text, token->val.str.len); -    } -} - -/* Adjust pfile->print.line for newlines embedded in output.  */ -static void -account_for_newlines (pfile, str, len) -     cpp_reader *pfile; -     const uchar *str; -     size_t len; -{ -  while (len--) -    if (*str++ == '\n') -      pfile->print.line++; -} - -/* Writes out a traditionally preprocessed file.  */ -static void -scan_translation_unit_trad (pfile) -     cpp_reader *pfile; -{ -  while (_cpp_read_logical_line_trad (pfile)) -    { -      size_t len = pfile->out.cur - pfile->out.base; -      maybe_print_line (pfile, pfile->print.map, pfile->out.first_line); -      fwrite (pfile->out.base, 1, len, pfile->print.outf); -      pfile->print.printed = 1; -      if (!CPP_OPTION (pfile, discard_comments)) -	account_for_newlines (pfile, pfile->out.base, len); -    } -} - -/* If the token read on logical line LINE needs to be output on a -   different line to the current one, output the required newlines or -   a line marker, and return 1.  Otherwise return 0.  */ -static void -maybe_print_line (pfile, map, line) -     cpp_reader *pfile; -     const struct line_map *map; -     unsigned int line; -{ -  /* End the previous line of text.  */ -  if (pfile->print.printed) -    { -      putc ('\n', pfile->print.outf); -      pfile->print.line++; -      pfile->print.printed = 0; -    } - -  if (line >= pfile->print.line && line < pfile->print.line + 8) -    { -      while (line > pfile->print.line) -	{ -	  putc ('\n', pfile->print.outf); -	  pfile->print.line++; -	} -    } -  else -    print_line (pfile, map, line, ""); -} - -/* Output a line marker for logical line LINE.  Special flags are "1" -   or "2" indicating entering or leaving a file.  */ -static void -print_line (pfile, map, line, special_flags) -     cpp_reader *pfile; -     const struct line_map *map; -     unsigned int line; -     const char *special_flags; -{ -  /* End any previous line of text.  */ -  if (pfile->print.printed) -    putc ('\n', pfile->print.outf); -  pfile->print.printed = 0; - -  pfile->print.line = line; -  if (! CPP_OPTION (pfile, no_line_commands)) -    { -      size_t to_file_len = strlen (map->to_file); -      unsigned char *to_file_quoted = alloca (to_file_len * 4 + 1); -      unsigned char *p; - -      /* cpp_quote_string does not nul-terminate, so we have to do it -	 ourselves.  */ -      p = cpp_quote_string (to_file_quoted, -			    (unsigned char *)map->to_file, to_file_len); -      *p = '\0'; -      fprintf (pfile->print.outf, "# %u \"%s\"%s", -	       SOURCE_LINE (map, pfile->print.line), -	       to_file_quoted, special_flags); - -      if (map->sysp == 2) -	fputs (" 3 4", pfile->print.outf); -      else if (map->sysp == 1) -	fputs (" 3", pfile->print.outf); - -      putc ('\n', pfile->print.outf); -    } -} - -/* Called when a line of output is started.  TOKEN is the first token -   of the line, and at end of file will be CPP_EOF.  */ -static void -cb_line_change (pfile, token, parsing_args) -     cpp_reader *pfile; -     const cpp_token *token; -     int parsing_args; -{ -  if (token->type == CPP_EOF || parsing_args) -    return; - -  maybe_print_line (pfile, pfile->print.map, token->line); -  pfile->print.prev = 0; -  pfile->print.source = 0; - -  /* Supply enough spaces to put this token in its original column, -     one space per column greater than 2, since scan_translation_unit -     will provide a space if PREV_WHITE.  Don't bother trying to -     reconstruct tabs; we can't get it right in general, and nothing -     ought to care.  Some things do care; the fault lies with them.  */ -  if (!CPP_OPTION (pfile, traditional)) -    { -      pfile->print.printed = 1; -      if (token->col > 2) -	{ -	  unsigned int spaces = token->col - 2; - -	  while (spaces--) -	    putc (' ', pfile->print.outf); -	} -    } -} - -static void -cb_ident (pfile, line, str) -     cpp_reader *pfile; -     unsigned int line; -     const cpp_string * str; -{ -  maybe_print_line (pfile, pfile->print.map, line); -  fprintf (pfile->print.outf, "#ident \"%s\"\n", str->text); -  pfile->print.line++; -} - -static void -cb_define (pfile, line, node) -     cpp_reader *pfile; -     unsigned int line; -     cpp_hashnode *node; -{ -  maybe_print_line (pfile, pfile->print.map, line); -  fputs ("#define ", pfile->print.outf); - -  /* -dD command line option.  */ -  if (CPP_OPTION (pfile, dump_macros) == dump_definitions) -    fputs ((const char *) cpp_macro_definition (pfile, node), -	   pfile->print.outf); -  else -    fputs ((const char *) NODE_NAME (node), pfile->print.outf); - -  putc ('\n', pfile->print.outf); -  pfile->print.line++; -} - -static void -cb_undef (pfile, line, node) -     cpp_reader *pfile; -     unsigned int line; -     cpp_hashnode *node; -{ -  maybe_print_line (pfile, pfile->print.map, line); -  fprintf (pfile->print.outf, "#undef %s\n", NODE_NAME (node)); -  pfile->print.line++; -} - -static void -cb_include (pfile, line, dir, header) -     cpp_reader *pfile; -     unsigned int line; -     const unsigned char *dir; -     const cpp_token *header; -{ -  maybe_print_line (pfile, pfile->print.map, line); -  fprintf (pfile->print.outf, "#%s %s\n", dir, -	   cpp_token_as_text (pfile, header)); -  pfile->print.line++; -} - -/* The file name, line number or system header flags have changed, as -   described in MAP.  From this point on, the old pfile->print.map might be -   pointing to freed memory, and so must not be dereferenced.  */ - -static void -cb_file_change (pfile, map) -     cpp_reader *pfile; -     const struct line_map *map; -{ -  const char *flags = ""; - -  /* First time?  */ -  if (pfile->print.map == NULL) -    { -      /* Avoid printing foo.i when the main file is foo.c.  */ -      if (!CPP_OPTION (pfile, preprocessed)) -	print_line (pfile, map, map->from_line, flags); -    } -  else -    { -      /* Bring current file to correct line when entering a new file.  */ -      if (map->reason == LC_ENTER) -	maybe_print_line (pfile, map - 1, map->from_line - 1); - -      if (map->reason == LC_ENTER) -	flags = " 1"; -      else if (map->reason == LC_LEAVE) -	flags = " 2"; -      print_line (pfile, map, map->from_line, flags); -    } - -  pfile->print.map = map; -} - -/* Copy a #pragma directive to the preprocessed output.  */ -static void -cb_def_pragma (pfile, line) -     cpp_reader *pfile; -     unsigned int line; -{ -  maybe_print_line (pfile, pfile->print.map, line); -  fputs ("#pragma ", pfile->print.outf); -  cpp_output_line (pfile, pfile->print.outf); -  pfile->print.line++; -} - -/* Dump out the hash table.  */ -static int -dump_macro (pfile, node, v) -     cpp_reader *pfile; -     cpp_hashnode *node; -     void *v ATTRIBUTE_UNUSED; -{ -  if (node->type == NT_MACRO && !(node->flags & NODE_BUILTIN)) -    { -      fputs ("#define ", pfile->print.outf); -      fputs ((const char *) cpp_macro_definition (pfile, node), -	     pfile->print.outf); -      putc ('\n', pfile->print.outf); -      pfile->print.line++; -    } - -  return 1; -} | 
