diff options
Diffstat (limited to 'gcc-4.8.1/gcc/c-family/c-ppoutput.c')
| -rw-r--r-- | gcc-4.8.1/gcc/c-family/c-ppoutput.c | 668 |
1 files changed, 0 insertions, 668 deletions
diff --git a/gcc-4.8.1/gcc/c-family/c-ppoutput.c b/gcc-4.8.1/gcc/c-family/c-ppoutput.c deleted file mode 100644 index 4a1534667..000000000 --- a/gcc-4.8.1/gcc/c-family/c-ppoutput.c +++ /dev/null @@ -1,668 +0,0 @@ -/* Preprocess only, using cpplib. - Copyright (C) 1995-2013 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 3, 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; see the file COPYING3. If not see - <http://www.gnu.org/licenses/>. */ - -#include "config.h" -#include "system.h" -#include "coretypes.h" -#include "cpplib.h" -#include "../libcpp/internal.h" -#include "tree.h" -#include "c-common.h" /* For flags. */ -#include "c-pragma.h" /* For parse_in. */ - -/* Encapsulates state used to convert a stream of tokens into a text - file. */ -static struct -{ - FILE *outf; /* Stream to write to. */ - const cpp_token *prev; /* Previous token. */ - const cpp_token *source; /* Source token for spacing. */ - int src_line; /* Line number currently being written. */ - unsigned char printed; /* Nonzero if something output at line. */ - bool first_time; /* pp_file_change hasn't been called yet. */ - const char *src_file; /* Current source file. */ -} print; - -/* Defined and undefined macros being queued for output with -dU at - the next newline. */ -typedef struct macro_queue -{ - struct macro_queue *next; /* Next macro in the list. */ - char *macro; /* The name of the macro if not - defined, the full definition if - defined. */ -} macro_queue; -static macro_queue *define_queue, *undef_queue; - -/* General output routines. */ -static void scan_translation_unit (cpp_reader *); -static void print_lines_directives_only (int, const void *, size_t); -static void scan_translation_unit_directives_only (cpp_reader *); -static void scan_translation_unit_trad (cpp_reader *); -static void account_for_newlines (const unsigned char *, size_t); -static int dump_macro (cpp_reader *, cpp_hashnode *, void *); -static void dump_queued_macros (cpp_reader *); - -static void print_line_1 (source_location, const char*, FILE *); -static void print_line (source_location, const char *); -static void maybe_print_line_1 (source_location, FILE *); -static void maybe_print_line (source_location); -static void do_line_change (cpp_reader *, const cpp_token *, - source_location, int); - -/* Callback routines for the parser. Most of these are active only - in specific modes. */ -static void cb_line_change (cpp_reader *, const cpp_token *, int); -static void cb_define (cpp_reader *, source_location, cpp_hashnode *); -static void cb_undef (cpp_reader *, source_location, cpp_hashnode *); -static void cb_used_define (cpp_reader *, source_location, cpp_hashnode *); -static void cb_used_undef (cpp_reader *, source_location, cpp_hashnode *); -static void cb_include (cpp_reader *, source_location, const unsigned char *, - const char *, int, const cpp_token **); -static void cb_ident (cpp_reader *, source_location, const cpp_string *); -static void cb_def_pragma (cpp_reader *, source_location); -static void cb_read_pch (cpp_reader *pfile, const char *name, - int fd, const char *orig_name); - -/* Preprocess and output. */ -void -preprocess_file (cpp_reader *pfile) -{ - /* A successful cpp_read_main_file guarantees that we can call - cpp_scan_nooutput or cpp_get_token next. */ - if (flag_no_output && pfile->buffer) - { - /* Scan -included buffers, then the main file. */ - while (pfile->buffer->prev) - cpp_scan_nooutput (pfile); - cpp_scan_nooutput (pfile); - } - else if (cpp_get_options (pfile)->traditional) - scan_translation_unit_trad (pfile); - else if (cpp_get_options (pfile)->directives_only - && !cpp_get_options (pfile)->preprocessed) - scan_translation_unit_directives_only (pfile); - else - scan_translation_unit (pfile); - - /* -dM command line option. Should this be elsewhere? */ - if (flag_dump_macros == 'M') - cpp_forall_identifiers (pfile, dump_macro, NULL); - - /* Flush any pending output. */ - if (print.printed) - putc ('\n', print.outf); -} - -/* Set up the callbacks as appropriate. */ -void -init_pp_output (FILE *out_stream) -{ - cpp_callbacks *cb = cpp_get_callbacks (parse_in); - - if (!flag_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 (cpp_get_options (parse_in)->lang != CLK_ASM) - { - cb->ident = cb_ident; - cb->def_pragma = cb_def_pragma; - } - } - - if (flag_dump_includes) - cb->include = cb_include; - - if (flag_pch_preprocess) - { - cb->valid_pch = c_common_valid_pch; - cb->read_pch = cb_read_pch; - } - - if (flag_dump_macros == 'N' || flag_dump_macros == 'D') - { - cb->define = cb_define; - cb->undef = cb_undef; - } - - if (flag_dump_macros == 'U') - { - cb->before_define = dump_queued_macros; - cb->used_define = cb_used_define; - cb->used_undef = cb_used_undef; - } - - /* Initialize the print structure. */ - print.src_line = 1; - print.printed = 0; - print.prev = 0; - print.outf = out_stream; - print.first_time = 1; - print.src_file = ""; -} - -/* Writes out the preprocessed file, handling spacing and paste - avoidance issues. */ -static void -scan_translation_unit (cpp_reader *pfile) -{ - bool avoid_paste = false; - bool do_line_adjustments - = cpp_get_options (parse_in)->lang != CLK_ASM - && !flag_no_line_commands; - bool in_pragma = false; - - print.source = NULL; - for (;;) - { - source_location loc; - const cpp_token *token = cpp_get_token_with_location (pfile, &loc); - - if (token->type == CPP_PADDING) - { - avoid_paste = true; - if (print.source == NULL - || (!(print.source->flags & PREV_WHITE) - && token->val.source == NULL)) - 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) - { - int src_line = LOCATION_LINE (loc); - - if (print.source == NULL) - print.source = token; - - if (src_line != print.src_line - && do_line_adjustments - && !in_pragma) - { - do_line_change (pfile, token, loc, false); - putc (' ', print.outf); - } - else if (print.source->flags & PREV_WHITE - || (print.prev - && cpp_avoid_paste (pfile, print.prev, token)) - || (print.prev == NULL && token->type == CPP_HASH)) - putc (' ', print.outf); - } - else if (token->flags & PREV_WHITE) - { - int src_line = LOCATION_LINE (loc); - - if (src_line != print.src_line - && do_line_adjustments - && !in_pragma) - do_line_change (pfile, token, loc, false); - putc (' ', print.outf); - } - - avoid_paste = false; - print.source = NULL; - print.prev = token; - if (token->type == CPP_PRAGMA) - { - const char *space; - const char *name; - - maybe_print_line (token->src_loc); - fputs ("#pragma ", print.outf); - c_pp_lookup_pragma (token->val.pragma, &space, &name); - if (space) - fprintf (print.outf, "%s %s", space, name); - else - fprintf (print.outf, "%s", name); - print.printed = 1; - in_pragma = true; - } - else if (token->type == CPP_PRAGMA_EOL) - { - maybe_print_line (token->src_loc); - in_pragma = false; - } - else - { - if (cpp_get_options (parse_in)->debug) - linemap_dump_location (line_table, token->src_loc, - print.outf); - cpp_output_token (token, print.outf); - } - - if (token->type == CPP_COMMENT) - account_for_newlines (token->val.str.text, token->val.str.len); - } -} - -static void -print_lines_directives_only (int lines, const void *buf, size_t size) -{ - print.src_line += lines; - fwrite (buf, 1, size, print.outf); -} - -/* Writes out the preprocessed file, handling spacing and paste - avoidance issues. */ -static void -scan_translation_unit_directives_only (cpp_reader *pfile) -{ - struct _cpp_dir_only_callbacks cb; - - cb.print_lines = print_lines_directives_only; - cb.maybe_print_line = maybe_print_line; - - _cpp_preprocess_dir_only (pfile, &cb); -} - -/* Adjust print.src_line for newlines embedded in output. */ -static void -account_for_newlines (const unsigned char *str, size_t len) -{ - while (len--) - if (*str++ == '\n') - print.src_line++; -} - -/* Writes out a traditionally preprocessed file. */ -static void -scan_translation_unit_trad (cpp_reader *pfile) -{ - while (_cpp_read_logical_line_trad (pfile)) - { - size_t len = pfile->out.cur - pfile->out.base; - maybe_print_line (pfile->out.first_line); - fwrite (pfile->out.base, 1, len, print.outf); - print.printed = 1; - if (!CPP_OPTION (pfile, discard_comments)) - account_for_newlines (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_1 (source_location src_loc, FILE *stream) -{ - int src_line = LOCATION_LINE (src_loc); - const char *src_file = LOCATION_FILE (src_loc); - - /* End the previous line of text. */ - if (print.printed) - { - putc ('\n', stream); - print.src_line++; - print.printed = 0; - } - - if (!flag_no_line_commands - && src_line >= print.src_line - && src_line < print.src_line + 8 - && strcmp (src_file, print.src_file) == 0) - { - while (src_line > print.src_line) - { - putc ('\n', stream); - print.src_line++; - } - } - else - print_line_1 (src_loc, "", stream); - -} - -/* 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 (source_location src_loc) -{ - if (cpp_get_options (parse_in)->debug) - linemap_dump_location (line_table, src_loc, - print.outf); - maybe_print_line_1 (src_loc, print.outf); -} - -/* Output a line marker for logical line LINE. Special flags are "1" - or "2" indicating entering or leaving a file. */ - -static void -print_line_1 (source_location src_loc, const char *special_flags, FILE *stream) -{ - /* End any previous line of text. */ - if (print.printed) - putc ('\n', stream); - print.printed = 0; - - if (!flag_no_line_commands) - { - const char *file_path = LOCATION_FILE (src_loc); - int sysp; - size_t to_file_len = strlen (file_path); - unsigned char *to_file_quoted = - (unsigned char *) alloca (to_file_len * 4 + 1); - unsigned char *p; - - print.src_line = LOCATION_LINE (src_loc); - print.src_file = file_path; - - /* cpp_quote_string does not nul-terminate, so we have to do it - ourselves. */ - p = cpp_quote_string (to_file_quoted, - (const unsigned char *) file_path, - to_file_len); - *p = '\0'; - fprintf (stream, "# %u \"%s\"%s", - print.src_line == 0 ? 1 : print.src_line, - to_file_quoted, special_flags); - - sysp = in_system_header_at (src_loc); - if (sysp == 2) - fputs (" 3 4", stream); - else if (sysp == 1) - fputs (" 3", stream); - - putc ('\n', stream); - } -} - -/* Output a line marker for logical line LINE. Special flags are "1" - or "2" indicating entering or leaving a file. */ - -static void -print_line (source_location src_loc, const char *special_flags) -{ - if (cpp_get_options (parse_in)->debug) - linemap_dump_location (line_table, src_loc, - print.outf); - print_line_1 (src_loc, special_flags, print.outf); -} - -/* Helper function for cb_line_change and scan_translation_unit. */ -static void -do_line_change (cpp_reader *pfile, const cpp_token *token, - source_location src_loc, int parsing_args) -{ - if (define_queue || undef_queue) - dump_queued_macros (pfile); - - if (token->type == CPP_EOF || parsing_args) - return; - - maybe_print_line (src_loc); - print.prev = 0; - 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)) - { - int spaces = LOCATION_COLUMN (src_loc) - 2; - print.printed = 1; - - while (-- spaces >= 0) - putc (' ', 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 (cpp_reader *pfile, const cpp_token *token, - int parsing_args) -{ - do_line_change (pfile, token, token->src_loc, parsing_args); -} - -static void -cb_ident (cpp_reader *pfile ATTRIBUTE_UNUSED, source_location line, - const cpp_string *str) -{ - maybe_print_line (line); - fprintf (print.outf, "#ident %s\n", str->text); - print.src_line++; -} - -static void -cb_define (cpp_reader *pfile, source_location line, cpp_hashnode *node) -{ - const struct line_map *map; - - maybe_print_line (line); - fputs ("#define ", print.outf); - - /* 'D' is whole definition; 'N' is name only. */ - if (flag_dump_macros == 'D') - fputs ((const char *) cpp_macro_definition (pfile, node), - print.outf); - else - fputs ((const char *) NODE_NAME (node), print.outf); - - putc ('\n', print.outf); - linemap_resolve_location (line_table, line, - LRK_MACRO_DEFINITION_LOCATION, - &map); - if (LINEMAP_LINE (map) != 0) - print.src_line++; -} - -static void -cb_undef (cpp_reader *pfile ATTRIBUTE_UNUSED, source_location line, - cpp_hashnode *node) -{ - maybe_print_line (line); - fprintf (print.outf, "#undef %s\n", NODE_NAME (node)); - print.src_line++; -} - -static void -cb_used_define (cpp_reader *pfile, source_location line ATTRIBUTE_UNUSED, - cpp_hashnode *node) -{ - macro_queue *q; - if (node->flags & NODE_BUILTIN) - return; - q = XNEW (macro_queue); - q->macro = xstrdup ((const char *) cpp_macro_definition (pfile, node)); - q->next = define_queue; - define_queue = q; -} - -static void -cb_used_undef (cpp_reader *pfile ATTRIBUTE_UNUSED, - source_location line ATTRIBUTE_UNUSED, - cpp_hashnode *node) -{ - macro_queue *q; - q = XNEW (macro_queue); - q->macro = xstrdup ((const char *) NODE_NAME (node)); - q->next = undef_queue; - undef_queue = q; -} - -static void -dump_queued_macros (cpp_reader *pfile ATTRIBUTE_UNUSED) -{ - macro_queue *q; - - /* End the previous line of text. */ - if (print.printed) - { - putc ('\n', print.outf); - print.src_line++; - print.printed = 0; - } - - for (q = define_queue; q;) - { - macro_queue *oq; - fputs ("#define ", print.outf); - fputs (q->macro, print.outf); - putc ('\n', print.outf); - print.src_line++; - oq = q; - q = q->next; - free (oq->macro); - free (oq); - } - define_queue = NULL; - for (q = undef_queue; q;) - { - macro_queue *oq; - fprintf (print.outf, "#undef %s\n", q->macro); - print.src_line++; - oq = q; - q = q->next; - free (oq->macro); - free (oq); - } - undef_queue = NULL; -} - -static void -cb_include (cpp_reader *pfile ATTRIBUTE_UNUSED, source_location line, - const unsigned char *dir, const char *header, int angle_brackets, - const cpp_token **comments) -{ - maybe_print_line (line); - if (angle_brackets) - fprintf (print.outf, "#%s <%s>", dir, header); - else - fprintf (print.outf, "#%s \"%s\"", dir, header); - - if (comments != NULL) - { - while (*comments != NULL) - { - if ((*comments)->flags & PREV_WHITE) - putc (' ', print.outf); - cpp_output_token (*comments, print.outf); - ++comments; - } - } - - putc ('\n', print.outf); - print.src_line++; -} - -/* Callback called when -fworking-director and -E to emit working - directory in cpp output file. */ - -void -pp_dir_change (cpp_reader *pfile ATTRIBUTE_UNUSED, const char *dir) -{ - size_t to_file_len = strlen (dir); - unsigned char *to_file_quoted = - (unsigned char *) 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, (const unsigned char *) dir, to_file_len); - *p = '\0'; - fprintf (print.outf, "# 1 \"%s//\"\n", to_file_quoted); -} - -/* The file name, line number or system header flags have changed, as - described in MAP. */ - -void -pp_file_change (const struct line_map *map) -{ - const char *flags = ""; - - if (flag_no_line_commands) - return; - - if (map != NULL) - { - input_location = map->start_location; - if (print.first_time) - { - /* Avoid printing foo.i when the main file is foo.c. */ - if (!cpp_get_options (parse_in)->preprocessed) - print_line (map->start_location, flags); - print.first_time = 0; - } - else - { - /* Bring current file to correct line when entering a new file. */ - if (map->reason == LC_ENTER) - { - const struct line_map *from = INCLUDED_FROM (line_table, map); - maybe_print_line (LAST_SOURCE_LINE_LOCATION (from)); - } - if (map->reason == LC_ENTER) - flags = " 1"; - else if (map->reason == LC_LEAVE) - flags = " 2"; - print_line (map->start_location, flags); - } - } -} - -/* Copy a #pragma directive to the preprocessed output. */ -static void -cb_def_pragma (cpp_reader *pfile, source_location line) -{ - maybe_print_line (line); - fputs ("#pragma ", print.outf); - cpp_output_line (pfile, print.outf); - print.src_line++; -} - -/* Dump out the hash table. */ -static int -dump_macro (cpp_reader *pfile, cpp_hashnode *node, void *v ATTRIBUTE_UNUSED) -{ - if (node->type == NT_MACRO && !(node->flags & NODE_BUILTIN)) - { - fputs ("#define ", print.outf); - fputs ((const char *) cpp_macro_definition (pfile, node), - print.outf); - putc ('\n', print.outf); - print.src_line++; - } - - return 1; -} - -/* Load in the PCH file NAME, open on FD. It was originally searched for - by ORIG_NAME. Also, print out a #include command so that the PCH - file can be loaded when the preprocessed output is compiled. */ - -static void -cb_read_pch (cpp_reader *pfile, const char *name, - int fd, const char *orig_name ATTRIBUTE_UNUSED) -{ - c_common_read_pch (pfile, name, fd, orig_name); - - fprintf (print.outf, "#pragma GCC pch_preprocess \"%s\"\n", name); - print.src_line++; -} |