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"
/* 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 ***,
+ source_location *);
static void push_conditional (cpp_reader *, int, int, const cpp_hashnode *);
static unsigned int read_flag (cpp_reader *, unsigned int);
static bool strtolinenum (const uchar *, size_t, linenum_type *, bool *);
-static void do_diagnostic (cpp_reader *, int, int);
+static void do_diagnostic (cpp_reader *, int, int, 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 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 int parse_answer (cpp_reader *, struct answer **, int, source_location);
static cpp_hashnode *parse_assertion (cpp_reader *, struct answer **, int);
static struct answer ** find_answer (cpp_hashnode *, const struct answer *);
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 *);
/* This is the table of directive handlers. It is ordered by
frequency of occurrence; the numbers at the end are directive
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 | DEPRECATED) /* 11 */ \
+D(ident, T_IDENT, EXTENSION, IN_I) /* 11 */ \
D(import, T_IMPORT, EXTENSION, INCL | EXPAND) /* 0 ObjC */ \
D(assert, T_ASSERT, EXTENSION, DEPRECATED) /* 0 SVR4 */ \
D(unassert, T_UNASSERT, EXTENSION, DEPRECATED) /* 0 SVR4 */ \
-D(sccs, T_SCCS, EXTENSION, IN_I | DEPRECATED) /* 0 SVR4? */
+D(sccs, T_SCCS, EXTENSION, IN_I) /* 0 SVR4? */
/* #sccs is synonymous with #ident. */
#define do_sccs do_ident
;
}
-/* Ensure there are no stray tokens at the end of a directive. */
+/* 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)
+check_eol (cpp_reader *pfile, bool expand)
{
- if (! SEEN_EOL () && _cpp_lex_token (pfile)->type != CPP_EOF)
+ if (! SEEN_EOL () && (expand
+ ? cpp_get_token (pfile)
+ : _cpp_lex_token (pfile))->type != CPP_EOF)
cpp_error (pfile, CPP_DL_PEDWARN, "extra tokens at end of #%s directive",
pfile->directive->name);
}
else if (((dir->flags & DEPRECATED) != 0
|| (dir == &dtable[T_IMPORT] && !CPP_OPTION (pfile, objc)))
&& CPP_OPTION (pfile, warn_deprecated))
- cpp_error (pfile, CPP_DL_WARNING, "#%s is a deprecated GCC extension",
- dir->name);
+ cpp_warning (pfile, CPP_W_DEPRECATED,
+ "#%s is a deprecated GCC extension", dir->name);
}
/* Traditionally, a directive is ignored unless its # is in
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 (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. */
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,
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);
}
}
- check_eol (pfile);
+ check_eol (pfile, false);
}
/* Undefine a single macro/assertion/whatever. */
/* 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, source_location *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);
/* 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;
+ source_location 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)
if (!*fname)
{
- cpp_error (pfile, CPP_DL_ERROR, "empty filename in #%s",
- pfile->directive->name);
+ cpp_error_with_line (pfile, CPP_DL_ERROR, location, 0,
+ "empty filename in #%s",
+ pfile->directive->name);
XDELETEVEC (fname);
if (buf)
XDELETEVEC (buf);
{
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);
}
const char *new_file = map->to_file;
linenum_type new_lineno;
unsigned int new_sysp = map->sysp;
- enum lc_reason reason = LC_RENAME;
+ enum lc_reason reason = LC_RENAME_VERBATIM;
int flag;
bool wrapped;
{
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);
+
+ /* 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 source_location 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);
}
/* 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, int code, int reason, int print_dir)
{
const unsigned char *dir_name;
unsigned char *line;
line = cpp_output_line_to_string (pfile, dir_name);
pfile->state.prevent_expansion--;
- cpp_error_with_line (pfile, code, src_loc, 0, "%s", line);
+ 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, 0, 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
{
/* 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);
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;
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 (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)
+{
+ char *macroname, *dest;
+ const char *limit, *src;
+ const cpp_token *txt;
+ struct def_pragma_macro *c;
+
+ txt = get__Pragma_string (pfile);
+ if (!txt)
+ {
+ source_location 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);
+ c->name = XNEWVAR (char, strlen (macroname) + 1);
+ strcpy (c->name, macroname);
+ c->next = pfile->pushed_macros;
+ c->value = cpp_push_definition (pfile, c->name);
+ 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)
+ {
+ source_location 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->name, c->value);
+ 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;
"#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;
+ source_location 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, 0, 0);
}
}
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_STRING32 && string->type != CPP_STRING16
+ && string->type != CPP_UTF8STRING)
return NULL;
paren = get_token_no_padding (pfile);
pfile->cb.used_undef (pfile, pfile->directive_line, node);
}
}
- check_eol (pfile);
+ if (pfile->cb.used)
+ pfile->cb.used (pfile, pfile->directive_line, node);
+ check_eol (pfile, false);
}
}
pfile->cb.used_undef (pfile, pfile->directive_line, node);
}
}
- check_eol (pfile);
+ if (pfile->cb.used)
+ pfile->cb.used (pfile, pfile->directive_line, node);
+ check_eol (pfile, false);
}
}
/* Only check EOL if was not originally skipping. */
if (!ifs->was_skipping && CPP_OPTION (pfile, warn_endif_labels))
- check_eol (pfile);
+ check_eol (pfile, false);
}
}
{
/* Only check EOL if was not originally skipping. */
if (!ifs->was_skipping && CPP_OPTION (pfile, warn_endif_labels))
- check_eol (pfile);
+ check_eol (pfile, false);
/* 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. */
+ ANSWERP to point to the answer. PRED_LOC is the location of the
+ predicate. */
static int
-parse_answer (cpp_reader *pfile, struct answer **answerp, int type)
+parse_answer (cpp_reader *pfile, struct answer **answerp, int type,
+ source_location pred_loc)
{
const cpp_token *paren;
struct answer *answer;
if (type == T_UNASSERT && paren->type == CPP_EOF)
return 0;
- cpp_error (pfile, CPP_DL_ERROR, "missing '(' after predicate");
+ cpp_error_with_line (pfile, CPP_DL_ERROR, pred_loc, 0,
+ "missing '(' after predicate");
return 1;
}
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, answerp, type, predicate->src_loc) == 0)
{
- 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);
}
node->type = NT_ASSERTION;
node->value.answers = new_answer;
- check_eol (pfile);
+ check_eol (pfile, false);
}
}
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_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);
+ cpp_hashnode *node = _cpp_lex_identifier (pfile, str);
if (node && node->type == NT_MACRO)
return node->value.macro;
else
void
cpp_pop_definition (cpp_reader *pfile, const char *str, cpp_macro *dfn)
{
- cpp_hashnode *node = lex_macro_node_from_str (pfile, str);
+ cpp_hashnode *node = _cpp_lex_identifier (pfile, str);
if (node == NULL)
return;
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