/* CPP Library. (Directive handling.)
- Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005,
- 2007 Free Software Foundation, Inc.
+ Copyright (C) 1986-2019 Free Software Foundation, Inc.
Contributed by Per Bothner, 1994-95.
Based on CCCP program by Paul Rubin, June 1986
Adapted to ANSI C, Richard Stallman, Jan 1987
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
-Free Software Foundation; either version 2, or (at your option) any
+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,
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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+along with this program; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
struct if_stack
{
struct if_stack *next;
- unsigned int line; /* Line where condition started. */
+ location_t line; /* Line where condition started. */
const cpp_hashnode *mi_cmacro;/* macro name for #ifndef around entire file */
bool skip_elses; /* Can future #else / #elif be skipped? */
bool was_skipping; /* If were skipping on entry. */
#define INCL (1 << 2)
#define IN_I (1 << 3)
#define EXPAND (1 << 4)
+#define DEPRECATED (1 << 5)
/* Defines one #-directive, including how to handle it. */
typedef void (*directive_handler) (cpp_reader *);
/* Forward declarations. */
static void skip_rest_of_line (cpp_reader *);
-static void check_eol (cpp_reader *);
+static void check_eol (cpp_reader *, bool);
static void start_directive (cpp_reader *);
static void prepare_directive_trad (cpp_reader *);
static void end_directive (cpp_reader *, int);
static void directive_diagnostics (cpp_reader *, const directive *, int);
static void run_directive (cpp_reader *, int, const char *, size_t);
static char *glue_header_name (cpp_reader *);
-static const char *parse_include (cpp_reader *, int *, const cpp_token ***);
+static const char *parse_include (cpp_reader *, int *, const cpp_token ***,
+ location_t *);
static void push_conditional (cpp_reader *, int, int, const cpp_hashnode *);
static unsigned int read_flag (cpp_reader *, unsigned int);
-static int strtoul_for_line (const uchar *, unsigned int, unsigned long *);
-static void do_diagnostic (cpp_reader *, int, int);
+static bool strtolinenum (const uchar *, size_t, linenum_type *, bool *);
+static void do_diagnostic (cpp_reader *, enum cpp_diagnostic_level code,
+ enum cpp_warning_reason reason, int);
static cpp_hashnode *lex_macro_node (cpp_reader *, bool);
static int undefine_macros (cpp_reader *, cpp_hashnode *, void *);
static void do_include_common (cpp_reader *, enum include_type);
static void do_pragma_poison (cpp_reader *);
static void do_pragma_system_header (cpp_reader *);
static void do_pragma_dependency (cpp_reader *);
+static void do_pragma_warning_or_error (cpp_reader *, bool error);
+static void do_pragma_warning (cpp_reader *);
+static void do_pragma_error (cpp_reader *);
static void do_linemarker (cpp_reader *);
static const cpp_token *get_token_no_padding (cpp_reader *);
static const cpp_token *get__Pragma_string (cpp_reader *);
-static void destringize_and_run (cpp_reader *, const cpp_string *);
-static int parse_answer (cpp_reader *, struct answer **, int);
-static cpp_hashnode *parse_assertion (cpp_reader *, struct answer **, int);
-static struct answer ** find_answer (cpp_hashnode *, const struct answer *);
+static void destringize_and_run (cpp_reader *, const cpp_string *,
+ location_t);
+static bool parse_answer (cpp_reader *, int, location_t, cpp_macro **);
+static cpp_hashnode *parse_assertion (cpp_reader *, int, cpp_macro **);
+static cpp_macro **find_answer (cpp_hashnode *, const cpp_macro *);
static void handle_assertion (cpp_reader *, const char *, int);
+static void do_pragma_push_macro (cpp_reader *);
+static void do_pragma_pop_macro (cpp_reader *);
+static void cpp_pop_definition (cpp_reader *, struct def_pragma_macro *);
-/* This is the table of directive handlers. It is ordered by
- frequency of occurrence; the numbers at the end are directive
- counts from all the source code I have lying around (egcs and libc
- CVS as of 1999-05-18, plus grub-0.5.91, linux-2.2.9, and
- pcmcia-cs-3.0.9). This is no longer important as directive lookup
- is now O(1). All extensions other than #warning and #include_next
- are deprecated. The name is where the extension appears to have
- come from. */
+/* This is the table of directive handlers. All extensions other than
+ #warning, #include_next, and #import are deprecated. The name is
+ where the extension appears to have come from. */
#define DIRECTIVE_TABLE \
-D(define, T_DEFINE = 0, KANDR, IN_I) /* 270554 */ \
-D(include, T_INCLUDE, KANDR, INCL | EXPAND) /* 52262 */ \
-D(endif, T_ENDIF, KANDR, COND) /* 45855 */ \
-D(ifdef, T_IFDEF, KANDR, COND | IF_COND) /* 22000 */ \
-D(if, T_IF, KANDR, COND | IF_COND | EXPAND) /* 18162 */ \
-D(else, T_ELSE, KANDR, COND) /* 9863 */ \
-D(ifndef, T_IFNDEF, KANDR, COND | IF_COND) /* 9675 */ \
-D(undef, T_UNDEF, KANDR, IN_I) /* 4837 */ \
-D(line, T_LINE, KANDR, EXPAND) /* 2465 */ \
-D(elif, T_ELIF, STDC89, COND | EXPAND) /* 610 */ \
-D(error, T_ERROR, STDC89, 0) /* 475 */ \
-D(pragma, T_PRAGMA, STDC89, IN_I) /* 195 */ \
-D(warning, T_WARNING, EXTENSION, 0) /* 22 */ \
-D(include_next, T_INCLUDE_NEXT, EXTENSION, INCL | EXPAND) /* 19 */ \
-D(ident, T_IDENT, EXTENSION, IN_I) /* 11 */ \
-D(import, T_IMPORT, EXTENSION, INCL | EXPAND) /* 0 ObjC */ \
-D(assert, T_ASSERT, EXTENSION, 0) /* 0 SVR4 */ \
-D(unassert, T_UNASSERT, EXTENSION, 0) /* 0 SVR4 */ \
-D(sccs, T_SCCS, EXTENSION, IN_I) /* 0 SVR4? */
+ D(define, T_DEFINE = 0, KANDR, IN_I) \
+ D(include, T_INCLUDE, KANDR, INCL | EXPAND) \
+ D(endif, T_ENDIF, KANDR, COND) \
+ D(ifdef, T_IFDEF, KANDR, COND | IF_COND) \
+ D(if, T_IF, KANDR, COND | IF_COND | EXPAND) \
+ D(else, T_ELSE, KANDR, COND) \
+ D(ifndef, T_IFNDEF, KANDR, COND | IF_COND) \
+ D(undef, T_UNDEF, KANDR, IN_I) \
+ D(line, T_LINE, KANDR, EXPAND) \
+ D(elif, T_ELIF, STDC89, COND | EXPAND) \
+ D(error, T_ERROR, STDC89, 0) \
+ D(pragma, T_PRAGMA, STDC89, IN_I) \
+ D(warning, T_WARNING, EXTENSION, 0) \
+ D(include_next, T_INCLUDE_NEXT, EXTENSION, INCL | EXPAND) \
+ D(ident, T_IDENT, EXTENSION, IN_I) \
+ D(import, T_IMPORT, EXTENSION, INCL | EXPAND) /* ObjC */ \
+ D(assert, T_ASSERT, EXTENSION, DEPRECATED) /* SVR4 */ \
+ D(unassert, T_UNASSERT, EXTENSION, DEPRECATED) /* SVR4 */ \
+ D(sccs, T_SCCS, EXTENSION, IN_I) /* SVR4? */
/* #sccs is synonymous with #ident. */
#define do_sccs do_ident
DIRECTIVE_TABLE
};
#undef D
+
+/* A NULL-terminated array of directive names for use
+ when suggesting corrections for misspelled directives. */
+#define D(name, t, origin, flags) #name,
+static const char * const directive_names[] = {
+DIRECTIVE_TABLE
+ NULL
+};
+#undef D
+
#undef DIRECTIVE_TABLE
/* Wrapper struct directive for linemarkers.
did use this notation in its preprocessed output. */
static const directive linemarker_dir =
{
- do_linemarker, U"#", 1, KANDR, IN_I
+ do_linemarker, UC"#", 1, KANDR, IN_I
};
-#define SEEN_EOL() (pfile->cur_token[-1].type == CPP_EOF)
-
/* Skip any remaining tokens in a directive. */
static void
skip_rest_of_line (cpp_reader *pfile)
;
}
-/* Ensure there are no stray tokens at the end of a directive. */
+/* Helper function for check_oel. */
+
static void
-check_eol (cpp_reader *pfile)
+check_eol_1 (cpp_reader *pfile, bool expand, enum cpp_warning_reason reason)
{
- if (! SEEN_EOL () && _cpp_lex_token (pfile)->type != CPP_EOF)
- cpp_error (pfile, CPP_DL_PEDWARN, "extra tokens at end of #%s directive",
- pfile->directive->name);
+ if (! SEEN_EOL () && (expand
+ ? cpp_get_token (pfile)
+ : _cpp_lex_token (pfile))->type != CPP_EOF)
+ cpp_pedwarning (pfile, reason, "extra tokens at end of #%s directive",
+ pfile->directive->name);
+}
+
+/* Variant of check_eol used for Wendif-labels warnings. */
+
+static void
+check_eol_endif_labels (cpp_reader *pfile)
+{
+ check_eol_1 (pfile, false, CPP_W_ENDIF_LABELS);
+}
+
+/* Ensure there are no stray tokens at the end of a directive. If
+ EXPAND is true, tokens macro-expanding to nothing are allowed. */
+
+static void
+check_eol (cpp_reader *pfile, bool expand)
+{
+ check_eol_1 (pfile, expand, CPP_W_NONE);
}
/* Ensure there are no stray tokens other than comments at the end of
static void
end_directive (cpp_reader *pfile, int skip_line)
{
- if (pfile->state.in_deferred_pragma)
- ;
- else if (CPP_OPTION (pfile, traditional))
+ if (CPP_OPTION (pfile, traditional))
{
/* Revert change of prepare_directive_trad. */
- pfile->state.prevent_expansion--;
+ if (!pfile->state.in_deferred_pragma)
+ pfile->state.prevent_expansion--;
if (pfile->directive != &dtable[T_DEFINE])
_cpp_remove_overlay (pfile);
}
+ else if (pfile->state.in_deferred_pragma)
+ ;
/* We don't skip for an assembler #. */
else if (skip_line)
{
if (no_expand)
pfile->state.prevent_expansion++;
- _cpp_scan_out_logical_line (pfile, NULL);
+ _cpp_scan_out_logical_line (pfile, NULL, false);
if (no_expand)
pfile->state.prevent_expansion--;
static void
directive_diagnostics (cpp_reader *pfile, const directive *dir, int indented)
{
- /* Issue -pedantic warnings for extensions. */
- if (CPP_PEDANTIC (pfile)
- && ! pfile->state.skipping
- && dir->origin == EXTENSION)
- cpp_error (pfile, CPP_DL_PEDWARN, "#%s is a GCC extension", dir->name);
+ /* Issue -pedantic or deprecated warnings for extensions. We let
+ -pedantic take precedence if both are applicable. */
+ if (! pfile->state.skipping)
+ {
+ if (dir->origin == EXTENSION
+ && !(dir == &dtable[T_IMPORT] && CPP_OPTION (pfile, objc))
+ && CPP_PEDANTIC (pfile))
+ cpp_error (pfile, CPP_DL_PEDWARN, "#%s is a GCC extension", dir->name);
+ else if (((dir->flags & DEPRECATED) != 0
+ || (dir == &dtable[T_IMPORT] && !CPP_OPTION (pfile, objc)))
+ && CPP_OPTION (pfile, cpp_warn_deprecated))
+ cpp_warning (pfile, CPP_W_DEPRECATED,
+ "#%s is a deprecated GCC extension", dir->name);
+ }
/* Traditionally, a directive is ignored unless its # is in
column 1. Therefore in code intended to work with K+R
if (CPP_WTRADITIONAL (pfile))
{
if (dir == &dtable[T_ELIF])
- cpp_error (pfile, CPP_DL_WARNING,
- "suggest not using #elif in traditional C");
+ cpp_warning (pfile, CPP_W_TRADITIONAL,
+ "suggest not using #elif in traditional C");
else if (indented && dir->origin == KANDR)
- cpp_error (pfile, CPP_DL_WARNING,
- "traditional C ignores #%s with the # indented",
- dir->name);
+ cpp_warning (pfile, CPP_W_TRADITIONAL,
+ "traditional C ignores #%s with the # indented",
+ dir->name);
else if (!indented && dir->origin != KANDR)
- cpp_error (pfile, CPP_DL_WARNING,
- "suggest hiding #%s from traditional C with an indented #",
- dir->name);
+ cpp_warning (pfile, CPP_W_TRADITIONAL,
+ "suggest hiding #%s from traditional C with an indented #",
+ dir->name);
}
}
if (was_parsing_args)
{
- if (CPP_OPTION (pfile, pedantic))
+ if (CPP_OPTION (pfile, cpp_pedantic))
cpp_error (pfile, CPP_DL_PEDWARN,
"embedding a directive within macro arguments is not portable");
pfile->state.parsing_args = 0;
if (dname->type == CPP_NAME)
{
- if (dname->val.node->is_directive)
- dir = &dtable[dname->val.node->directive_index];
+ if (dname->val.node.node->is_directive)
+ dir = &dtable[dname->val.node.node->directive_index];
}
/* We do not recognize the # followed by a number extension in
assembler code. */
We exclude the -fdirectives-only case because macro expansion
has not been performed yet, and block comments can cause spaces
- to preceed the directive. */
+ to precede the directive. */
if (CPP_OPTION (pfile, preprocessed)
&& !CPP_OPTION (pfile, directives_only)
&& (indented || !(dir->flags & IN_I)))
if (CPP_OPTION (pfile, lang) == CLK_ASM)
skip = 0;
else if (!pfile->state.skipping)
- cpp_error (pfile, CPP_DL_ERROR, "invalid preprocessing directive #%s",
- cpp_token_as_text (pfile, dname));
+ {
+ const char *unrecognized
+ = (const char *)cpp_token_as_text (pfile, dname);
+ const char *hint = NULL;
+
+ /* Call back into gcc to get a spelling suggestion. Ideally
+ we'd just use best_match from gcc/spellcheck.h (and filter
+ out the uncommon directives), but that requires moving it
+ to a support library. */
+ if (pfile->cb.get_suggestion)
+ hint = pfile->cb.get_suggestion (pfile, unrecognized,
+ directive_names);
+
+ if (hint)
+ {
+ rich_location richloc (pfile->line_table, dname->src_loc);
+ source_range misspelled_token_range
+ = get_range_from_loc (pfile->line_table, dname->src_loc);
+ richloc.add_fixit_replace (misspelled_token_range, hint);
+ cpp_error_at (pfile, CPP_DL_ERROR, &richloc,
+ "invalid preprocessing directive #%s;"
+ " did you mean #%s?",
+ unrecognized, hint);
+ }
+ else
+ cpp_error (pfile, CPP_DL_ERROR,
+ "invalid preprocessing directive #%s",
+ unrecognized);
+ }
}
pfile->directive = dir;
_cpp_backup_tokens (pfile, 1);
end_directive (pfile, skip);
- if (was_parsing_args)
+ if (was_parsing_args && !pfile->state.in_deferred_pragma)
{
/* Restore state when within macro args. */
pfile->state.parsing_args = 2;
if (token->type == CPP_NAME)
{
- cpp_hashnode *node = token->val.node;
+ cpp_hashnode *node = token->val.node.node;
if (is_def_or_undef && node == pfile->spec_nodes.n_defined)
cpp_error (pfile, CPP_DL_ERROR,
"\"defined\" cannot be used as a macro name");
+ else if (is_def_or_undef
+ && (node == pfile->spec_nodes.n__has_include__
+ || node == pfile->spec_nodes.n__has_include_next__))
+ cpp_error (pfile, CPP_DL_ERROR,
+ "\"__has_include__\" cannot be used as a macro name");
else if (! (node->flags & NODE_POISONED))
return node;
}
else if (token->flags & NAMED_OP)
cpp_error (pfile, CPP_DL_ERROR,
"\"%s\" cannot be used as a macro name as it is an operator in C++",
- NODE_NAME (token->val.node));
+ NODE_NAME (token->val.node.node));
else if (token->type == CPP_EOF)
cpp_error (pfile, CPP_DL_ERROR, "no macro name given in #%s directive",
pfile->directive->name);
pfile->state.save_comments =
! CPP_OPTION (pfile, discard_comments_in_macro_exp);
+ if (pfile->cb.before_define)
+ pfile->cb.before_define (pfile);
+
if (_cpp_create_definition (pfile, node))
if (pfile->cb.define)
pfile->cb.define (pfile, pfile->directive_line, node);
+
+ node->flags &= ~NODE_USED;
}
}
if (node)
{
+ if (pfile->cb.before_define)
+ pfile->cb.before_define (pfile);
+
if (pfile->cb.undef)
pfile->cb.undef (pfile, pfile->directive_line, node);
/* 6.10.3.5 paragraph 2: [#undef] is ignored if the specified
identifier is not currently defined as a macro name. */
- if (node->type == NT_MACRO)
+ if (cpp_macro_p (node))
{
if (node->flags & NODE_WARN)
cpp_error (pfile, CPP_DL_WARNING,
"undefining \"%s\"", NODE_NAME (node));
+ else if (cpp_builtin_macro_p (node)
+ && CPP_OPTION (pfile, warn_builtin_macro_redefined))
+ cpp_warning_with_line (pfile, CPP_W_BUILTIN_MACRO_REDEFINED,
+ pfile->directive_line, 0,
+ "undefining \"%s\"", NODE_NAME (node));
if (CPP_OPTION (pfile, warn_unused_macros))
_cpp_warn_if_unused_macro (pfile, node, NULL);
}
}
- check_eol (pfile);
+ check_eol (pfile, false);
}
/* Undefine a single macro/assertion/whatever. */
/* Body of _cpp_free_definition inlined here for speed.
Macros and assertions no longer have anything to free. */
h->type = NT_VOID;
- h->flags &= ~(NODE_POISONED|NODE_BUILTIN|NODE_DISABLED);
+ h->value.answers = NULL;
+ h->flags &= ~(NODE_POISONED|NODE_DISABLED|NODE_USED);
return 1;
}
/* Returns the file name of #include, #include_next, #import and
#pragma dependency. The string is malloced and the caller should
- free it. Returns NULL on error. */
+ free it. Returns NULL on error. LOCATION is the source location
+ of the file name. */
+
static const char *
parse_include (cpp_reader *pfile, int *pangle_brackets,
- const cpp_token ***buf)
+ const cpp_token ***buf, location_t *location)
{
char *fname;
const cpp_token *header;
/* Allow macro expansion. */
header = get_token_no_padding (pfile);
- if (header->type == CPP_STRING || header->type == CPP_HEADER_NAME)
+ *location = header->src_loc;
+ if ((header->type == CPP_STRING && header->val.str.text[0] != 'R')
+ || header->type == CPP_HEADER_NAME)
{
fname = XNEWVEC (char, header->val.str.len - 1);
memcpy (fname, header->val.str.text + 1, header->val.str.len - 2);
const unsigned char *dir;
if (pfile->directive == &dtable[T_PRAGMA])
- dir = U"pragma dependency";
+ dir = UC"pragma dependency";
else
dir = pfile->directive->name;
cpp_error (pfile, CPP_DL_ERROR, "#%s expects \"FILENAME\" or <FILENAME>",
/* This pragma allows extra tokens after the file name. */
}
else if (buf == NULL || CPP_OPTION (pfile, discard_comments))
- check_eol (pfile);
+ check_eol (pfile, true);
else
{
/* If we are not discarding comments, then gather them while
const char *fname;
int angle_brackets;
const cpp_token **buf = NULL;
+ location_t location;
/* Re-enable saving of comments if requested, so that the include
callback can dump comments which follow #include. */
pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
- fname = parse_include (pfile, &angle_brackets, &buf);
+ fname = parse_include (pfile, &angle_brackets, &buf, &location);
if (!fname)
- {
- if (buf)
- XDELETEVEC (buf);
- return;
- }
+ goto done;
if (!*fname)
- {
- cpp_error (pfile, CPP_DL_ERROR, "empty filename in #%s",
- pfile->directive->name);
- XDELETEVEC (fname);
- if (buf)
- XDELETEVEC (buf);
- return;
- }
+ {
+ cpp_error_with_line (pfile, CPP_DL_ERROR, location, 0,
+ "empty filename in #%s",
+ pfile->directive->name);
+ goto done;
+ }
/* Prevent #include recursion. */
if (pfile->line_table->depth >= CPP_STACK_MAX)
pfile->directive->name, fname, angle_brackets,
buf);
- _cpp_stack_include (pfile, fname, angle_brackets, type);
+ _cpp_stack_include (pfile, fname, angle_brackets, type, location);
}
+ done:
XDELETEVEC (fname);
if (buf)
XDELETEVEC (buf);
}
/* Subroutine of do_line and do_linemarker. Convert a number in STR,
- of length LEN, to binary; store it in NUMP, and return 0 if the
- number was well-formed, 1 if not. Temporary, hopefully. */
-static int
-strtoul_for_line (const uchar *str, unsigned int len, long unsigned int *nump)
+ of length LEN, to binary; store it in NUMP, and return false if the
+ number was well-formed, true if not. WRAPPED is set to true if the
+ number did not fit into 'unsigned long'. */
+static bool
+strtolinenum (const uchar *str, size_t len, linenum_type *nump, bool *wrapped)
{
- unsigned long reg = 0;
+ linenum_type reg = 0;
+ linenum_type reg_prev = 0;
+
uchar c;
+ *wrapped = false;
while (len--)
{
c = *str++;
if (!ISDIGIT (c))
- return 1;
+ return true;
reg *= 10;
reg += c - '0';
+ if (reg < reg_prev)
+ *wrapped = true;
+ reg_prev = reg;
}
*nump = reg;
- return 0;
+ return false;
}
/* Interpret #line command.
static void
do_line (cpp_reader *pfile)
{
- const struct line_maps *line_table = pfile->line_table;
- const struct line_map *map = &line_table->maps[line_table->used - 1];
+ struct line_maps *line_table = pfile->line_table;
+ const line_map_ordinary *map = LINEMAPS_LAST_ORDINARY_MAP (line_table);
/* skip_rest_of_line() may cause line table to be realloc()ed so note down
sysp right now. */
- unsigned char map_sysp = map->sysp;
+ unsigned char map_sysp = ORDINARY_MAP_IN_SYSTEM_HEADER_P (map);
const cpp_token *token;
- const char *new_file = map->to_file;
- unsigned long new_lineno;
+ const char *new_file = ORDINARY_MAP_FILE_NAME (map);
+ linenum_type new_lineno;
/* C99 raised the minimum limit on #line numbers. */
- unsigned int cap = CPP_OPTION (pfile, c99) ? 2147483647 : 32767;
+ linenum_type cap = CPP_OPTION (pfile, c99) ? 2147483647 : 32767;
+ bool wrapped;
/* #line commands expand macros. */
token = cpp_get_token (pfile);
if (token->type != CPP_NUMBER
- || strtoul_for_line (token->val.str.text, token->val.str.len,
- &new_lineno))
+ || strtolinenum (token->val.str.text, token->val.str.len,
+ &new_lineno, &wrapped))
{
- cpp_error (pfile, CPP_DL_ERROR,
- "\"%s\" after #line is not a positive integer",
- cpp_token_as_text (pfile, token));
+ if (token->type == CPP_EOF)
+ cpp_error (pfile, CPP_DL_ERROR, "unexpected end of file after #line");
+ else
+ cpp_error (pfile, CPP_DL_ERROR,
+ "\"%s\" after #line is not a positive integer",
+ cpp_token_as_text (pfile, token));
return;
}
- if (CPP_PEDANTIC (pfile) && (new_lineno == 0 || new_lineno > cap))
+ if (CPP_PEDANTIC (pfile) && (new_lineno == 0 || new_lineno > cap || wrapped))
cpp_error (pfile, CPP_DL_PEDWARN, "line number out of range");
+ else if (wrapped)
+ cpp_error (pfile, CPP_DL_WARNING, "line number out of range");
token = cpp_get_token (pfile);
if (token->type == CPP_STRING)
{
cpp_string s = { 0, 0 };
if (cpp_interpret_string_notranslate (pfile, &token->val.str, 1,
- &s, false))
+ &s, CPP_STRING))
new_file = (const char *)s.text;
- check_eol (pfile);
+ check_eol (pfile, true);
}
else if (token->type != CPP_EOF)
{
}
skip_rest_of_line (pfile);
- _cpp_do_file_change (pfile, LC_RENAME, new_file, new_lineno,
+ _cpp_do_file_change (pfile, LC_RENAME_VERBATIM, new_file, new_lineno,
map_sysp);
+ line_table->seen_line_directive = true;
}
/* Interpret the # 44 "file" [flags] notation, which has slightly
static void
do_linemarker (cpp_reader *pfile)
{
- const struct line_maps *line_table = pfile->line_table;
- const struct line_map *map = &line_table->maps[line_table->used - 1];
+ struct line_maps *line_table = pfile->line_table;
+ const line_map_ordinary *map = LINEMAPS_LAST_ORDINARY_MAP (line_table);
const cpp_token *token;
- const char *new_file = map->to_file;
- unsigned long new_lineno;
- unsigned int new_sysp = map->sysp;
- enum lc_reason reason = LC_RENAME;
+ const char *new_file = ORDINARY_MAP_FILE_NAME (map);
+ linenum_type new_lineno;
+ unsigned int new_sysp = ORDINARY_MAP_IN_SYSTEM_HEADER_P (map);
+ enum lc_reason reason = LC_RENAME_VERBATIM;
int flag;
+ bool wrapped;
/* Back up so we can get the number again. Putting this in
_cpp_handle_directive risks two calls to _cpp_backup_tokens in
/* #line commands expand macros. */
token = cpp_get_token (pfile);
if (token->type != CPP_NUMBER
- || strtoul_for_line (token->val.str.text, token->val.str.len,
- &new_lineno))
+ || strtolinenum (token->val.str.text, token->val.str.len,
+ &new_lineno, &wrapped))
{
+ /* Unlike #line, there does not seem to be a way to get an EOF
+ here. So, it should be safe to always spell the token. */
cpp_error (pfile, CPP_DL_ERROR,
"\"%s\" after # is not a positive integer",
cpp_token_as_text (pfile, token));
{
cpp_string s = { 0, 0 };
if (cpp_interpret_string_notranslate (pfile, &token->val.str,
- 1, &s, false))
+ 1, &s, CPP_STRING))
new_file = (const char *)s.text;
new_sysp = 0;
}
pfile->buffer->sysp = new_sysp;
- check_eol (pfile);
+ check_eol (pfile, false);
}
else if (token->type != CPP_EOF)
{
}
skip_rest_of_line (pfile);
+
+ if (reason == LC_LEAVE)
+ {
+ /* Reread map since cpp_get_token can invalidate it with a
+ reallocation. */
+ map = LINEMAPS_LAST_ORDINARY_MAP (line_table);
+ const line_map_ordinary *from
+ = linemap_included_from_linemap (line_table, map);
+ if (MAIN_FILE_P (map)
+ || (from
+ && filename_cmp (ORDINARY_MAP_FILE_NAME (from), new_file) != 0))
+ {
+ cpp_warning (pfile, CPP_W_NONE,
+ "file \"%s\" linemarker ignored due to "
+ "incorrect nesting", new_file);
+ return;
+ }
+ }
+ /* Compensate for the increment in linemap_add that occurs in
+ _cpp_do_file_change. We're currently at the start of the line
+ *following* the #line directive. A separate location_t for this
+ location makes no sense (until we do the LC_LEAVE), and
+ complicates LAST_SOURCE_LINE_LOCATION. */
+ pfile->line_table->highest_location--;
+
_cpp_do_file_change (pfile, reason, new_file, new_lineno, new_sysp);
+ line_table->seen_line_directive = true;
}
/* Arrange the file_change callback. pfile->line has changed to
and zero otherwise. */
void
_cpp_do_file_change (cpp_reader *pfile, enum lc_reason reason,
- const char *to_file, unsigned int file_line,
+ const char *to_file, linenum_type file_line,
unsigned int sysp)
{
+ linemap_assert (reason != LC_ENTER_MACRO);
const struct line_map *map = linemap_add (pfile->line_table, reason, sysp,
to_file, file_line);
+ const line_map_ordinary *ord_map = NULL;
if (map != NULL)
- linemap_line_start (pfile->line_table, map->to_line, 127);
+ {
+ ord_map = linemap_check_ordinary (map);
+ linemap_line_start (pfile->line_table,
+ ORDINARY_MAP_STARTING_LINE_NUMBER (ord_map),
+ 127);
+ }
if (pfile->cb.file_change)
- pfile->cb.file_change (pfile, map);
+ pfile->cb.file_change (pfile, ord_map);
}
/* Report a warning or error detected by the program we are
processing. Use the directive's tokens in the error message. */
static void
-do_diagnostic (cpp_reader *pfile, int code, int print_dir)
+do_diagnostic (cpp_reader *pfile, enum cpp_diagnostic_level code,
+ enum cpp_warning_reason reason, int print_dir)
{
- if (_cpp_begin_message (pfile, code, pfile->cur_token[-1].src_loc, 0))
- {
- if (print_dir)
- fprintf (stderr, "#%s ", pfile->directive->name);
- pfile->state.prevent_expansion++;
- cpp_output_line (pfile, stderr);
- pfile->state.prevent_expansion--;
- }
+ const unsigned char *dir_name;
+ unsigned char *line;
+ location_t src_loc = pfile->cur_token[-1].src_loc;
+
+ if (print_dir)
+ dir_name = pfile->directive->name;
+ else
+ dir_name = NULL;
+ pfile->state.prevent_expansion++;
+ line = cpp_output_line_to_string (pfile, dir_name);
+ pfile->state.prevent_expansion--;
+
+ if (code == CPP_DL_WARNING_SYSHDR && reason)
+ cpp_warning_with_line_syshdr (pfile, reason, src_loc, 0, "%s", line);
+ else if (code == CPP_DL_WARNING && reason)
+ cpp_warning_with_line (pfile, reason, src_loc, 0, "%s", line);
+ else
+ cpp_error_with_line (pfile, code, src_loc, 0, "%s", line);
+ free (line);
}
static void
do_error (cpp_reader *pfile)
{
- do_diagnostic (pfile, CPP_DL_ERROR, 1);
+ do_diagnostic (pfile, CPP_DL_ERROR, CPP_W_NONE, 1);
}
static void
do_warning (cpp_reader *pfile)
{
/* We want #warning diagnostics to be emitted in system headers too. */
- do_diagnostic (pfile, CPP_DL_WARNING_SYSHDR, 1);
+ do_diagnostic (pfile, CPP_DL_WARNING_SYSHDR, CPP_W_WARNING_DIRECTIVE, 1);
}
/* Report program identification. */
else if (pfile->cb.ident)
pfile->cb.ident (pfile, pfile->directive_line, &str->val.str);
- check_eol (pfile);
+ check_eol (pfile, false);
}
/* Lookup a PRAGMA name in a singly-linked CHAIN. Returns the
if (space)
{
- node = cpp_lookup (pfile, U space, strlen (space));
+ node = cpp_lookup (pfile, UC space, strlen (space));
entry = lookup_pragma_entry (*chain, node);
if (!entry)
{
}
/* Check for duplicates. */
- node = cpp_lookup (pfile, U name, strlen (name));
+ node = cpp_lookup (pfile, UC name, strlen (name));
entry = lookup_pragma_entry (*chain, node);
if (entry == NULL)
{
{
/* Pragmas in the global namespace. */
register_pragma_internal (pfile, 0, "once", do_pragma_once);
+ register_pragma_internal (pfile, 0, "push_macro", do_pragma_push_macro);
+ register_pragma_internal (pfile, 0, "pop_macro", do_pragma_pop_macro);
/* New GCC-specific pragmas should be put in the GCC namespace. */
register_pragma_internal (pfile, "GCC", "poison", do_pragma_poison);
register_pragma_internal (pfile, "GCC", "system_header",
do_pragma_system_header);
register_pragma_internal (pfile, "GCC", "dependency", do_pragma_dependency);
+ register_pragma_internal (pfile, "GCC", "warning", do_pragma_warning);
+ register_pragma_internal (pfile, "GCC", "error", do_pragma_error);
}
/* Return the number of registered pragmas in PE. */
{
if (pe->is_nspace)
sd = restore_registered_pragmas (pfile, pe->u.space, sd);
- pe->pragma = cpp_lookup (pfile, U *sd, strlen (*sd));
+ pe->pragma = cpp_lookup (pfile, UC *sd, strlen (*sd));
free (*sd);
sd++;
}
do_pragma (cpp_reader *pfile)
{
const struct pragma_entry *p = NULL;
- const cpp_token *token, *pragma_token = pfile->cur_token;
+ const cpp_token *token, *pragma_token;
+ location_t pragma_token_virt_loc = 0;
cpp_token ns_token;
unsigned int count = 1;
pfile->state.prevent_expansion++;
- token = cpp_get_token (pfile);
+ pragma_token = token = cpp_get_token_with_location (pfile,
+ &pragma_token_virt_loc);
ns_token = *token;
if (token->type == CPP_NAME)
{
- p = lookup_pragma_entry (pfile->pragmas, token->val.node);
+ p = lookup_pragma_entry (pfile->pragmas, token->val.node.node);
if (p && p->is_nspace)
{
bool allow_name_expansion = p->allow_expansion;
if (allow_name_expansion)
pfile->state.prevent_expansion--;
+
token = cpp_get_token (pfile);
if (token->type == CPP_NAME)
- p = lookup_pragma_entry (p->u.space, token->val.node);
+ p = lookup_pragma_entry (p->u.space, token->val.node.node);
else
p = NULL;
if (allow_name_expansion)
{
if (p->is_deferred)
{
- pfile->directive_result.src_loc = pragma_token->src_loc;
+ pfile->directive_result.src_loc = pragma_token_virt_loc;
pfile->directive_result.type = CPP_PRAGMA;
pfile->directive_result.flags = pragma_token->flags;
pfile->directive_result.val.pragma = p->u.ident;
if (cpp_in_primary_file (pfile))
cpp_error (pfile, CPP_DL_WARNING, "#pragma once in main file");
- check_eol (pfile);
+ check_eol (pfile, false);
_cpp_mark_file_once_only (pfile, pfile->buffer->file);
}
+/* Handle #pragma push_macro(STRING). */
+static void
+do_pragma_push_macro (cpp_reader *pfile)
+{
+ cpp_hashnode *node;
+ size_t defnlen;
+ const uchar *defn = NULL;
+ char *macroname, *dest;
+ const char *limit, *src;
+ const cpp_token *txt;
+ struct def_pragma_macro *c;
+
+ txt = get__Pragma_string (pfile);
+ if (!txt)
+ {
+ location_t src_loc = pfile->cur_token[-1].src_loc;
+ cpp_error_with_line (pfile, CPP_DL_ERROR, src_loc, 0,
+ "invalid #pragma push_macro directive");
+ check_eol (pfile, false);
+ skip_rest_of_line (pfile);
+ return;
+ }
+ dest = macroname = (char *) alloca (txt->val.str.len + 2);
+ src = (const char *) (txt->val.str.text + 1 + (txt->val.str.text[0] == 'L'));
+ limit = (const char *) (txt->val.str.text + txt->val.str.len - 1);
+ while (src < limit)
+ {
+ /* We know there is a character following the backslash. */
+ if (*src == '\\' && (src[1] == '\\' || src[1] == '"'))
+ src++;
+ *dest++ = *src++;
+ }
+ *dest = 0;
+ check_eol (pfile, false);
+ skip_rest_of_line (pfile);
+ c = XNEW (struct def_pragma_macro);
+ memset (c, 0, sizeof (struct def_pragma_macro));
+ c->name = XNEWVAR (char, strlen (macroname) + 1);
+ strcpy (c->name, macroname);
+ c->next = pfile->pushed_macros;
+ node = _cpp_lex_identifier (pfile, c->name);
+ if (node->type == NT_VOID)
+ c->is_undef = 1;
+ else
+ {
+ defn = cpp_macro_definition (pfile, node);
+ defnlen = ustrlen (defn);
+ c->definition = XNEWVEC (uchar, defnlen + 2);
+ c->definition[defnlen] = '\n';
+ c->definition[defnlen + 1] = 0;
+ c->line = node->value.macro->line;
+ c->syshdr = node->value.macro->syshdr;
+ c->used = node->value.macro->used;
+ memcpy (c->definition, defn, defnlen);
+ }
+
+ pfile->pushed_macros = c;
+}
+
+/* Handle #pragma pop_macro(STRING). */
+static void
+do_pragma_pop_macro (cpp_reader *pfile)
+{
+ char *macroname, *dest;
+ const char *limit, *src;
+ const cpp_token *txt;
+ struct def_pragma_macro *l = NULL, *c = pfile->pushed_macros;
+ txt = get__Pragma_string (pfile);
+ if (!txt)
+ {
+ location_t src_loc = pfile->cur_token[-1].src_loc;
+ cpp_error_with_line (pfile, CPP_DL_ERROR, src_loc, 0,
+ "invalid #pragma pop_macro directive");
+ check_eol (pfile, false);
+ skip_rest_of_line (pfile);
+ return;
+ }
+ dest = macroname = (char *) alloca (txt->val.str.len + 2);
+ src = (const char *) (txt->val.str.text + 1 + (txt->val.str.text[0] == 'L'));
+ limit = (const char *) (txt->val.str.text + txt->val.str.len - 1);
+ while (src < limit)
+ {
+ /* We know there is a character following the backslash. */
+ if (*src == '\\' && (src[1] == '\\' || src[1] == '"'))
+ src++;
+ *dest++ = *src++;
+ }
+ *dest = 0;
+ check_eol (pfile, false);
+ skip_rest_of_line (pfile);
+
+ while (c != NULL)
+ {
+ if (!strcmp (c->name, macroname))
+ {
+ if (!l)
+ pfile->pushed_macros = c->next;
+ else
+ l->next = c->next;
+ cpp_pop_definition (pfile, c);
+ free (c->definition);
+ free (c->name);
+ free (c);
+ break;
+ }
+ l = c;
+ c = c->next;
+ }
+}
+
/* Handle #pragma GCC poison, to poison one or more identifiers so
that the lexer produces a hard error for each subsequent usage. */
static void
break;
}
- hp = tok->val.node;
+ hp = tok->val.node.node;
if (hp->flags & NODE_POISONED)
continue;
- if (hp->type == NT_MACRO)
+ if (cpp_macro_p (hp))
cpp_error (pfile, CPP_DL_WARNING, "poisoning existing macro \"%s\"",
NODE_NAME (hp));
_cpp_free_definition (hp);
"#pragma system_header ignored outside include file");
else
{
- check_eol (pfile);
+ check_eol (pfile, false);
skip_rest_of_line (pfile);
cpp_make_system_header (pfile, 1, 0);
}
{
const char *fname;
int angle_brackets, ordering;
+ location_t location;
- fname = parse_include (pfile, &angle_brackets, NULL);
+ fname = parse_include (pfile, &angle_brackets, NULL, &location);
if (!fname)
return;
if (cpp_get_token (pfile)->type != CPP_EOF)
{
_cpp_backup_tokens (pfile, 1);
- do_diagnostic (pfile, CPP_DL_WARNING, 0);
+ do_diagnostic (pfile, CPP_DL_WARNING, CPP_W_NONE, 0);
}
}
free ((void *) fname);
}
+/* Issue a diagnostic with the message taken from the pragma. If
+ ERROR is true, the diagnostic is a warning, otherwise, it is an
+ error. */
+static void
+do_pragma_warning_or_error (cpp_reader *pfile, bool error)
+{
+ const cpp_token *tok = _cpp_lex_token (pfile);
+ cpp_string str;
+ if (tok->type != CPP_STRING
+ || !cpp_interpret_string_notranslate (pfile, &tok->val.str, 1, &str,
+ CPP_STRING)
+ || str.len == 0)
+ {
+ cpp_error (pfile, CPP_DL_ERROR, "invalid \"#pragma GCC %s\" directive",
+ error ? "error" : "warning");
+ return;
+ }
+ cpp_error (pfile, error ? CPP_DL_ERROR : CPP_DL_WARNING,
+ "%s", str.text);
+ free ((void *)str.text);
+}
+
+/* Issue a warning diagnostic. */
+static void
+do_pragma_warning (cpp_reader *pfile)
+{
+ do_pragma_warning_or_error (pfile, false);
+}
+
+/* Issue an error diagnostic. */
+static void
+do_pragma_error (cpp_reader *pfile)
+{
+ do_pragma_warning_or_error (pfile, true);
+}
+
/* Get a token but skip padding. */
static const cpp_token *
get_token_no_padding (cpp_reader *pfile)
get__Pragma_string (cpp_reader *pfile)
{
const cpp_token *string;
+ const cpp_token *paren;
- if (get_token_no_padding (pfile)->type != CPP_OPEN_PAREN)
+ paren = get_token_no_padding (pfile);
+ if (paren->type == CPP_EOF)
+ _cpp_backup_tokens (pfile, 1);
+ if (paren->type != CPP_OPEN_PAREN)
return NULL;
string = get_token_no_padding (pfile);
- if (string->type != CPP_STRING && string->type != CPP_WSTRING)
+ if (string->type == CPP_EOF)
+ _cpp_backup_tokens (pfile, 1);
+ if (string->type != CPP_STRING && string->type != CPP_WSTRING
+ && string->type != CPP_STRING32 && string->type != CPP_STRING16
+ && string->type != CPP_UTF8STRING)
return NULL;
- if (get_token_no_padding (pfile)->type != CPP_CLOSE_PAREN)
+ paren = get_token_no_padding (pfile);
+ if (paren->type == CPP_EOF)
+ _cpp_backup_tokens (pfile, 1);
+ if (paren->type != CPP_CLOSE_PAREN)
return NULL;
return string;
/* Destringize IN into a temporary buffer, by removing the first \ of
\" and \\ sequences, and process the result as a #pragma directive. */
static void
-destringize_and_run (cpp_reader *pfile, const cpp_string *in)
+destringize_and_run (cpp_reader *pfile, const cpp_string *in,
+ location_t expansion_loc)
{
const unsigned char *src, *limit;
char *dest, *result;
tokenrun *saved_cur_run;
cpp_token *toks;
int count;
+ const struct directive *save_directive;
dest = result = (char *) alloca (in->len - 1);
src = in->text + 1 + (in->text[0] == 'L');
saved_cur_token = pfile->cur_token;
saved_cur_run = pfile->cur_run;
- pfile->context = XNEW (cpp_context);
- pfile->context->macro = 0;
- pfile->context->prev = 0;
- pfile->context->next = 0;
+ pfile->context = XCNEW (cpp_context);
/* Inline run_directive, since we need to delay the _cpp_pop_buffer
until we've read all of the tokens that we want. */
start_directive (pfile);
_cpp_clean_line (pfile);
+ save_directive = pfile->directive;
+ pfile->directive = &dtable[T_PRAGMA];
do_pragma (pfile);
end_directive (pfile, 1);
+ pfile->directive = save_directive;
/* We always insert at least one token, the directive result. It'll
either be a CPP_PADDING or a CPP_PRAGMA. In the later case, we
toks = XRESIZEVEC (cpp_token, toks, maxcount);
}
toks[count] = *cpp_get_token (pfile);
+ /* _Pragma is a builtin, so we're not within a macro-map, and so
+ the token locations are set to bogus ordinary locations
+ near to, but after that of the "_Pragma".
+ Paper over this by setting them equal to the location of the
+ _Pragma itself (PR preprocessor/69126). */
+ toks[count].src_loc = expansion_loc;
/* Macros have been already expanded by cpp_get_token
if the pragma allowed expansion. */
toks[count++].flags |= NO_EXPAND;
_cpp_push_token_context (pfile, NULL, toks, count);
}
-/* Handle the _Pragma operator. */
-void
-_cpp_do__Pragma (cpp_reader *pfile)
+/* Handle the _Pragma operator. Return 0 on error, 1 if ok. */
+int
+_cpp_do__Pragma (cpp_reader *pfile, location_t expansion_loc)
{
const cpp_token *string = get__Pragma_string (pfile);
pfile->directive_result.type = CPP_PADDING;
if (string)
- destringize_and_run (pfile, &string->val.str);
- else
- cpp_error (pfile, CPP_DL_ERROR,
- "_Pragma takes a parenthesized string literal");
+ {
+ destringize_and_run (pfile, &string->val.str, expansion_loc);
+ return 1;
+ }
+ cpp_error (pfile, CPP_DL_ERROR,
+ "_Pragma takes a parenthesized string literal");
+ return 0;
}
/* Handle #ifdef. */
if (! pfile->state.skipping)
{
- const cpp_hashnode *node = lex_macro_node (pfile, false);
+ cpp_hashnode *node = lex_macro_node (pfile, false);
if (node)
{
- skip = node->type != NT_MACRO;
+ /* Do not treat conditional macros as being defined. This is due to
+ the powerpc and spu ports using conditional macros for 'vector',
+ 'bool', and 'pixel' to act as conditional keywords. This messes
+ up tests like #ifndef bool. */
+ skip = !cpp_macro_p (node) || (node->flags & NODE_CONDITIONAL);
_cpp_mark_macro_used (node);
- check_eol (pfile);
+ _cpp_maybe_notify_macro_use (pfile, node);
+ if (pfile->cb.used)
+ pfile->cb.used (pfile, pfile->directive_line, node);
+ check_eol (pfile, false);
}
}
do_ifndef (cpp_reader *pfile)
{
int skip = 1;
- const cpp_hashnode *node = 0;
+ cpp_hashnode *node = 0;
if (! pfile->state.skipping)
{
if (node)
{
- skip = node->type == NT_MACRO;
+ /* Do not treat conditional macros as being defined. This is due to
+ the powerpc and spu ports using conditional macros for 'vector',
+ 'bool', and 'pixel' to act as conditional keywords. This messes
+ up tests like #ifndef bool. */
+ skip = (cpp_macro_p (node)
+ && !(node->flags & NODE_CONDITIONAL));
_cpp_mark_macro_used (node);
- check_eol (pfile);
+ _cpp_maybe_notify_macro_use (pfile, node);
+ if (pfile->cb.used)
+ pfile->cb.used (pfile, pfile->directive_line, node);
+ check_eol (pfile, false);
}
}
int skip = 1;
if (! pfile->state.skipping)
- skip = _cpp_parse_expr (pfile) == false;
+ skip = _cpp_parse_expr (pfile, true) == false;
push_conditional (pfile, skip, T_IF, pfile->mi_ind_cmacro);
}
/* Only check EOL if was not originally skipping. */
if (!ifs->was_skipping && CPP_OPTION (pfile, warn_endif_labels))
- check_eol (pfile);
+ check_eol_endif_labels (pfile);
}
}
}
ifs->type = T_ELIF;
- /* Only evaluate this if we aren't skipping elses. During
- evaluation, set skipping to false to get lexer warnings. */
+ /* See DR#412: "Only the first group whose control condition
+ evaluates to true (nonzero) is processed; any following groups
+ are skipped and their controlling directives are processed as
+ if they were in a group that is skipped." */
if (ifs->skip_elses)
pfile->state.skipping = 1;
else
{
- pfile->state.skipping = 0;
- pfile->state.skipping = ! _cpp_parse_expr (pfile);
+ pfile->state.skipping = ! _cpp_parse_expr (pfile, false);
ifs->skip_elses = ! pfile->state.skipping;
}
{
/* Only check EOL if was not originally skipping. */
if (!ifs->was_skipping && CPP_OPTION (pfile, warn_endif_labels))
- check_eol (pfile);
+ check_eol_endif_labels (pfile);
/* If potential control macro, we go back outside again. */
if (ifs->next == 0 && ifs->mi_cmacro)
/* Read the tokens of the answer into the macro pool, in a directive
of type TYPE. Only commit the memory if we intend it as permanent
storage, i.e. the #assert case. Returns 0 on success, and sets
- ANSWERP to point to the answer. */
-static int
-parse_answer (cpp_reader *pfile, struct answer **answerp, int type)
+ ANSWERP to point to the answer. PRED_LOC is the location of the
+ predicate. */
+static bool
+parse_answer (cpp_reader *pfile, int type, location_t pred_loc,
+ cpp_macro **answer_ptr)
{
- const cpp_token *paren;
- struct answer *answer;
- unsigned int acount;
-
/* In a conditional, it is legal to not have an open paren. We
should save the following token in this case. */
- paren = cpp_get_token (pfile);
+ const cpp_token *paren = cpp_get_token (pfile);
/* If not a paren, see if we're OK. */
if (paren->type != CPP_OPEN_PAREN)
if (type == T_IF)
{
_cpp_backup_tokens (pfile, 1);
- return 0;
+ return true;
}
/* #unassert with no answer is valid - it removes all answers. */
if (type == T_UNASSERT && paren->type == CPP_EOF)
- return 0;
+ return true;
- cpp_error (pfile, CPP_DL_ERROR, "missing '(' after predicate");
- return 1;
+ cpp_error_with_line (pfile, CPP_DL_ERROR, pred_loc, 0,
+ "missing '(' after predicate");
+ return false;
}
- for (acount = 0;; acount++)
+ cpp_macro *answer = _cpp_new_macro (pfile, cmk_assert,
+ _cpp_reserve_room (pfile, 0,
+ sizeof (cpp_macro)));
+ answer->parm.next = NULL;
+ unsigned count = 0;
+ for (;;)
{
- size_t room_needed;
const cpp_token *token = cpp_get_token (pfile);
- cpp_token *dest;
if (token->type == CPP_CLOSE_PAREN)
break;
if (token->type == CPP_EOF)
{
cpp_error (pfile, CPP_DL_ERROR, "missing ')' to complete answer");
- return 1;
+ return false;
}
- /* struct answer includes the space for one token. */
- room_needed = (sizeof (struct answer) + acount * sizeof (cpp_token));
-
- if (BUFF_ROOM (pfile->a_buff) < room_needed)
- _cpp_extend_buff (pfile, &pfile->a_buff, sizeof (struct answer));
-
- dest = &((struct answer *) BUFF_FRONT (pfile->a_buff))->first[acount];
- *dest = *token;
-
- /* Drop whitespace at start, for answer equivalence purposes. */
- if (acount == 0)
- dest->flags &= ~PREV_WHITE;
+ answer = (cpp_macro *)_cpp_reserve_room
+ (pfile, sizeof (cpp_macro) + count * sizeof (cpp_token),
+ sizeof (cpp_token));
+ answer->exp.tokens[count++] = *token;
}
- if (acount == 0)
+ if (!count)
{
cpp_error (pfile, CPP_DL_ERROR, "predicate's answer is empty");
- return 1;
+ return false;
}
- answer = (struct answer *) BUFF_FRONT (pfile->a_buff);
- answer->count = acount;
- answer->next = NULL;
- *answerp = answer;
+ /* Drop whitespace at start, for answer equivalence purposes. */
+ answer->exp.tokens[0].flags &= ~PREV_WHITE;
- return 0;
+ answer->count = count;
+ *answer_ptr = answer;
+
+ return true;
}
/* Parses an assertion directive of type TYPE, returning a pointer to
- the hash node of the predicate, or 0 on error. If an answer was
- supplied, it is placed in ANSWERP, otherwise it is set to 0. */
+ the hash node of the predicate, or 0 on error. The node is
+ guaranteed to be disjoint from the macro namespace, so can only
+ have type 'NT_VOID'. If an answer was supplied, it is placed in
+ *ANSWER_PTR, which is otherwise set to 0. */
static cpp_hashnode *
-parse_assertion (cpp_reader *pfile, struct answer **answerp, int type)
+parse_assertion (cpp_reader *pfile, int type, cpp_macro **answer_ptr)
{
cpp_hashnode *result = 0;
- const cpp_token *predicate;
/* We don't expand predicates or answers. */
pfile->state.prevent_expansion++;
- *answerp = 0;
- predicate = cpp_get_token (pfile);
+ *answer_ptr = NULL;
+
+ const cpp_token *predicate = cpp_get_token (pfile);
if (predicate->type == CPP_EOF)
cpp_error (pfile, CPP_DL_ERROR, "assertion without predicate");
else if (predicate->type != CPP_NAME)
- cpp_error (pfile, CPP_DL_ERROR, "predicate must be an identifier");
- else if (parse_answer (pfile, answerp, type) == 0)
+ cpp_error_with_line (pfile, CPP_DL_ERROR, predicate->src_loc, 0,
+ "predicate must be an identifier");
+ else if (parse_answer (pfile, type, predicate->src_loc, answer_ptr))
{
- unsigned int len = NODE_LEN (predicate->val.node);
+ unsigned int len = NODE_LEN (predicate->val.node.node);
unsigned char *sym = (unsigned char *) alloca (len + 1);
/* Prefix '#' to get it out of macro namespace. */
sym[0] = '#';
- memcpy (sym + 1, NODE_NAME (predicate->val.node), len);
+ memcpy (sym + 1, NODE_NAME (predicate->val.node.node), len);
result = cpp_lookup (pfile, sym, len + 1);
}
pfile->state.prevent_expansion--;
+
return result;
}
/* Returns a pointer to the pointer to CANDIDATE in the answer chain,
or a pointer to NULL if the answer is not in the chain. */
-static struct answer **
-find_answer (cpp_hashnode *node, const struct answer *candidate)
+static cpp_macro **
+find_answer (cpp_hashnode *node, const cpp_macro *candidate)
{
unsigned int i;
- struct answer **result;
+ cpp_macro **result = NULL;
- for (result = &node->value.answers; *result; result = &(*result)->next)
+ for (result = &node->value.answers; *result; result = &(*result)->parm.next)
{
- struct answer *answer = *result;
+ cpp_macro *answer = *result;
if (answer->count == candidate->count)
{
for (i = 0; i < answer->count; i++)
- if (! _cpp_equiv_tokens (&answer->first[i], &candidate->first[i]))
+ if (!_cpp_equiv_tokens (&answer->exp.tokens[i],
+ &candidate->exp.tokens[i]))
break;
if (i == answer->count)
int
_cpp_test_assertion (cpp_reader *pfile, unsigned int *value)
{
- struct answer *answer;
- cpp_hashnode *node;
-
- node = parse_assertion (pfile, &answer, T_IF);
+ cpp_macro *answer;
+ cpp_hashnode *node = parse_assertion (pfile, T_IF, &answer);
/* For recovery, an erroneous assertion expression is handled as a
failing assertion. */
*value = 0;
if (node)
- *value = (node->type == NT_ASSERTION &&
- (answer == 0 || *find_answer (node, answer) != 0));
+ {
+ if (node->value.answers)
+ *value = !answer || *find_answer (node, answer);
+ }
else if (pfile->cur_token[-1].type == CPP_EOF)
_cpp_backup_tokens (pfile, 1);
static void
do_assert (cpp_reader *pfile)
{
- struct answer *new_answer;
- cpp_hashnode *node;
+ cpp_macro *answer;
+ cpp_hashnode *node = parse_assertion (pfile, T_ASSERT, &answer);
- node = parse_assertion (pfile, &new_answer, T_ASSERT);
if (node)
{
- size_t answer_size;
-
/* Place the new answer in the answer list. First check there
is not a duplicate. */
- new_answer->next = 0;
- if (node->type == NT_ASSERTION)
+ if (*find_answer (node, answer))
{
- if (*find_answer (node, new_answer))
- {
- cpp_error (pfile, CPP_DL_WARNING, "\"%s\" re-asserted",
- NODE_NAME (node) + 1);
- return;
- }
- new_answer->next = node->value.answers;
+ cpp_error (pfile, CPP_DL_WARNING, "\"%s\" re-asserted",
+ NODE_NAME (node) + 1);
+ return;
}
- answer_size = sizeof (struct answer) + ((new_answer->count - 1)
- * sizeof (cpp_token));
- /* Commit or allocate storage for the object. */
- if (pfile->hash_table->alloc_subobject)
- {
- struct answer *temp_answer = new_answer;
- new_answer = (struct answer *) pfile->hash_table->alloc_subobject
- (answer_size);
- memcpy (new_answer, temp_answer, answer_size);
- }
- else
- BUFF_FRONT (pfile->a_buff) += answer_size;
+ /* Commit or allocate storage for the answer. */
+ answer = (cpp_macro *)_cpp_commit_buff
+ (pfile, sizeof (cpp_macro) - sizeof (cpp_token)
+ + sizeof (cpp_token) * answer->count);
- node->type = NT_ASSERTION;
- node->value.answers = new_answer;
- check_eol (pfile);
+ /* Chain into the list. */
+ answer->parm.next = node->value.answers;
+ node->value.answers = answer;
+
+ check_eol (pfile, false);
}
}
static void
do_unassert (cpp_reader *pfile)
{
- cpp_hashnode *node;
- struct answer *answer;
+ cpp_macro *answer;
+ cpp_hashnode *node = parse_assertion (pfile, T_UNASSERT, &answer);
- node = parse_assertion (pfile, &answer, T_UNASSERT);
/* It isn't an error to #unassert something that isn't asserted. */
- if (node && node->type == NT_ASSERTION)
+ if (node)
{
if (answer)
{
- struct answer **p = find_answer (node, answer), *temp;
+ cpp_macro **p = find_answer (node, answer);
- /* Remove the answer from the list. */
- temp = *p;
- if (temp)
- *p = temp->next;
+ /* Remove the assert from the list. */
+ if (cpp_macro *temp = *p)
+ *p = temp->parm.next;
- /* Did we free the last answer? */
- if (node->value.answers == 0)
- node->type = NT_VOID;
-
- check_eol (pfile);
+ check_eol (pfile, false);
}
else
_cpp_free_definition (node);
void
cpp_define (cpp_reader *pfile, const char *str)
{
- char *buf, *p;
+ char *buf;
+ const char *p;
size_t count;
/* Copy the entire option so we can modify it.
run_directive (pfile, T_DEFINE, buf, count);
}
+
+/* Use to build macros to be run through cpp_define() as
+ described above.
+ Example: cpp_define_formatted (pfile, "MACRO=%d", value); */
+
+void
+cpp_define_formatted (cpp_reader *pfile, const char *fmt, ...)
+{
+ char *ptr;
+
+ va_list ap;
+ va_start (ap, fmt);
+ ptr = xvasprintf (fmt, ap);
+ va_end (ap);
+
+ cpp_define (pfile, ptr);
+ free (ptr);
+}
+
+
/* Slight variant of the above for use by initialize_builtins. */
void
_cpp_define_builtin (cpp_reader *pfile, const char *str)
run_directive (pfile, T_UNDEF, buf, len);
}
-/* Like lex_macro_node, but read the input from STR. */
-static cpp_hashnode *
-lex_macro_node_from_str (cpp_reader *pfile, const char *str)
-{
- size_t len = strlen (str);
- uchar *buf = (uchar *) alloca (len + 1);
- cpp_hashnode *node;
-
- memcpy (buf, str, len);
- buf[len] = '\n';
- cpp_push_buffer (pfile, buf, len, true);
- node = lex_macro_node (pfile, true);
- _cpp_pop_buffer (pfile);
-
- return node;
-}
-
-/* If STR is a defined macro, return its definition node, else return NULL. */
-cpp_macro *
-cpp_push_definition (cpp_reader *pfile, const char *str)
-{
- cpp_hashnode *node = lex_macro_node_from_str (pfile, str);
- if (node && node->type == NT_MACRO)
- return node->value.macro;
- else
- return NULL;
-}
-
-/* Replace a previous definition DFN of the macro STR. If DFN is NULL,
- then the macro should be undefined. */
-void
-cpp_pop_definition (cpp_reader *pfile, const char *str, cpp_macro *dfn)
+/* Replace a previous definition DEF of the macro STR. If DEF is NULL,
+ or first element is zero, then the macro should be undefined. */
+static void
+cpp_pop_definition (cpp_reader *pfile, struct def_pragma_macro *c)
{
- cpp_hashnode *node = lex_macro_node_from_str (pfile, str);
+ cpp_hashnode *node = _cpp_lex_identifier (pfile, c->name);
if (node == NULL)
return;
- if (node->type == NT_MACRO)
+ if (pfile->cb.before_define)
+ pfile->cb.before_define (pfile);
+
+ if (cpp_macro_p (node))
{
if (pfile->cb.undef)
pfile->cb.undef (pfile, pfile->directive_line, node);
if (CPP_OPTION (pfile, warn_unused_macros))
_cpp_warn_if_unused_macro (pfile, node, NULL);
+ _cpp_free_definition (node);
}
- if (node->type != NT_VOID)
- _cpp_free_definition (node);
- if (dfn)
- {
- node->type = NT_MACRO;
- node->value.macro = dfn;
- if (! ustrncmp (NODE_NAME (node), DSC ("__STDC_")))
- node->flags |= NODE_WARN;
+ if (c->is_undef)
+ return;
- if (pfile->cb.define)
- pfile->cb.define (pfile, pfile->directive_line, node);
- }
+ {
+ size_t namelen;
+ const uchar *dn;
+ cpp_hashnode *h = NULL;
+ cpp_buffer *nbuf;
+
+ namelen = ustrcspn (c->definition, "( \n");
+ h = cpp_lookup (pfile, c->definition, namelen);
+ dn = c->definition + namelen;
+
+ nbuf = cpp_push_buffer (pfile, dn, ustrchr (dn, '\n') - dn, true);
+ if (nbuf != NULL)
+ {
+ _cpp_clean_line (pfile);
+ nbuf->sysp = 1;
+ if (!_cpp_create_definition (pfile, h))
+ abort ();
+ _cpp_pop_buffer (pfile);
+ }
+ else
+ abort ();
+ h->value.macro->line = c->line;
+ h->value.macro->syshdr = c->syshdr;
+ h->value.macro->used = c->used;
+ }
}
/* Process the string STR as if it appeared as the body of a #assert. */
run_directive (pfile, type, str, count);
}
-/* The number of errors for a given reader. */
-unsigned int
-cpp_errors (cpp_reader *pfile)
-{
- return pfile->errors;
-}
-
/* The options structure. */
cpp_options *
cpp_get_options (cpp_reader *pfile)
cpp_buffer *buffer = pfile->buffer;
struct _cpp_file *inc = buffer->file;
struct if_stack *ifs;
+ const unsigned char *to_free;
/* Walk back up the conditional stack till we reach its level at
entry to this file, issuing error messages. */
/* _cpp_do_file_change expects pfile->buffer to be the new one. */
pfile->buffer = buffer->prev;
+ to_free = buffer->to_free;
free (buffer->notes);
/* Free the buffer object now; we may want to push a new buffer
if (inc)
{
- _cpp_pop_file_buffer (pfile, inc);
+ _cpp_pop_file_buffer (pfile, inc, to_free);
_cpp_do_file_change (pfile, LC_LEAVE, 0, 0, 0);
}
+ else if (to_free)
+ free ((void *)to_free);
}
/* Enter all recognized directives in the hash table. */
node->directive_index = i;
}
}
+
+/* Extract header file from a bracket include. Parsing starts after '<'.
+ The string is malloced and must be freed by the caller. */
+char *
+_cpp_bracket_include(cpp_reader *pfile)
+{
+ return glue_header_name (pfile);
+}
+
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