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-rw-r--r--contrib/gcc/cppmain.c432
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diff --git a/contrib/gcc/cppmain.c b/contrib/gcc/cppmain.c
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--- 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;
-}
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