summaryrefslogtreecommitdiff
path: root/libcpp/identifiers.c
diff options
context:
space:
mode:
authorPaolo Bonzini <bonzini@gnu.org>2004-05-24 10:50:45 +0000
committerPaolo Bonzini <bonzini@gcc.gnu.org>2004-05-24 10:50:45 +0000
commit4f4e53dd8517c0b2cbe36f0cf866f9f5ebe294e9 (patch)
tree5c68861b20c202df9c26dd8ebfaf794153accea0 /libcpp/identifiers.c
parentb1c5b5a09b545dabdd4a10d67f31d93779af95db (diff)
Makefile.def (host_modules): add libcpp.
ChangeLog: 2004-05-23 Paolo Bonzini <bonzini@gnu.org> * Makefile.def (host_modules): add libcpp. * Makefile.tpl: Add dependencies on and for libcpp. * Makefile.in: Regenerate. * configure.in: Add libcpp host module. * configure: Regenerate. config/ChangeLog: 2004-05-23 Paolo Bonzini <bonzini@gnu.org> * acx.m4 (ACX_HEADER_STDBOOL, ACX_HEADER_STRING): From gcc. gcc/ChangeLog: 2004-05-23 Paolo Bonzini <bonzini@gnu.org> Move libcpp to the toplevel. * Makefile.in: Remove references to libcpp files, use CPPLIBS instead of libcpp.a. Define SYMTAB_H and change hashtable.h to that. * aclocal.m4 (gcc_AC_HEADER_STDBOOL, gcc_AC_HEADER_STRING, gcc_AC_C__BOOL): Remove. * configure.ac (gcc_AC_C__BOOL, HAVE_UCHAR): Remove tests. * configure: Regenerate. * config.in: Regenerate. * c-ppoutput.c: Include ../libcpp/internal.h instead of cpphash.h. * cppcharset.c: Removed. * cpperror.c: Removed. * cppexp.c: Removed. * cppfiles.c: Removed. * cpphash.c: Removed. * cpphash.h: Removed. * cppinit.c: Removed. * cpplex.c: Removed. * cpplib.c: Removed. * cpplib.h: Removed. * cppmacro.c: Removed. * cpppch.c: Removed. * cpptrad.c: Removed. * cppucnid.h: Removed. * cppucnid.pl: Removed. * cppucnid.tab: Removed. * hashtable.c: Removed. * hashtable.h: Removed. * line-map.c: Removed. * line-map.h: Removed. * mkdeps.c: Removed. * mkdeps.h: Removed. * stringpool.h: Include symtab.h instead of hashtable.h. * tree.h: Include symtab.h instead of hashtable.h. * system.h (O_NONBLOCK, O_NOCTTY): Do not define. gcc/cp/ChangeLog: 2004-05-23 Paolo Bonzini <bonzini@gnu.org> * Make-lang.in: No need to specify $(LIBCPP). gcc/java/ChangeLog: 2004-05-23 Paolo Bonzini <bonzini@gnu.org> * Make-lang.in: Link in $(LIBCPP) instead of mkdeps.o. libcpp/ChangeLog: 2004-05-23 Paolo Bonzini <bonzini@gnu.org> Moved libcpp from the gcc subdirectory to the toplevel. * Makefile.am: New file. * Makefile.in: Regenerate. * configure.ac: New file. * configure: Regenerate. * config.in: Regenerate. * charset.c: Moved from gcc/cppcharset.c. Add note about brokenness of input charset detection. Adjust for change in name of cppucnid.h. * errors.c: Moved from gcc/cpperror.c. Do not include intl.h. * expr.c: Moved from gcc/cppexp.c. * files.c: Moved from gcc/cppfiles.c. Do not include intl.h. Remove #define of O_BINARY, it is in system.h. * identifiers.c: Moved from gcc/cpphash.c. * internal.h: Moved from gcc/cpphash.h. Change header guard name. All other files adjusted to match name change. * init.c: Moved from gcc/cppinit.c. (init_library) [ENABLE_NLS]: Call bindtextdomain. * lex.c: Moved from gcc/cpplex.c. * directives.c: Moved from gcc/cpplib.c. * macro.c: Moved from gcc/cppmacro.c. * pch.c: Moved from gcc/cpppch.c. Do not include intl.h. * traditional.c: Moved from gcc/cpptrad.c. * ucnid.h: Moved from gcc/cppucnid.h. Change header guard name. * ucnid.pl: Moved from gcc/cppucnid.pl. * ucnid.tab: Moved from gcc/cppucnid.tab. Change header guard name. * symtab.c: Moved from gcc/hashtable.c. * line-map.c: Moved from gcc. Do not include intl.h. * mkdeps.c: Moved from gcc. * system.h: New file. libcpp/include/ChangeLog: 2004-05-23 Paolo Bonzini <bonzini@gnu.org> * cpplib.h: Moved from gcc. Change header guard name. * line-map.h: Moved from gcc. Change header guard name. * mkdeps.h: Moved from gcc. Change header guard name. * symtab.h: Moved from gcc/hashtable.h. Change header guard name. libcpp/po/ChangeLog: 2004-05-23 Paolo Bonzini <bonzini@gnu.org> * be.po: Extracted from gcc/po/be.po. * ca.po: Extracted from gcc/po/ca.po. * da.po: Extracted from gcc/po/da.po. * de.po: Extracted from gcc/po/de.po. * el.po: Extracted from gcc/po/el.po. * es.po: Extracted from gcc/po/es.po. * fr.po: Extracted from gcc/po/fr.po. * ja.po: Extracted from gcc/po/ja.po. * nl.po: Extracted from gcc/po/nl.po. * sv.po: Extracted from gcc/po/sv.po. * tr.po: Extracted from gcc/po/tr.po. From-SVN: r82199
Diffstat (limited to 'libcpp/identifiers.c')
-rw-r--r--libcpp/identifiers.c118
1 files changed, 118 insertions, 0 deletions
diff --git a/libcpp/identifiers.c b/libcpp/identifiers.c
new file mode 100644
index 00000000000..a6b35b4e57c
--- /dev/null
+++ b/libcpp/identifiers.c
@@ -0,0 +1,118 @@
+/* Hash tables for the CPP library.
+ Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1998,
+ 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+ Written by Per Bothner, 1994.
+ 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
+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 "internal.h"
+
+static cpp_hashnode *alloc_node (hash_table *);
+
+/* Return an identifier node for hashtable.c. Used by cpplib except
+ when integrated with the C front ends. */
+static cpp_hashnode *
+alloc_node (hash_table *table)
+{
+ cpp_hashnode *node;
+
+ node = obstack_alloc (&table->pfile->hash_ob, sizeof (cpp_hashnode));
+ memset (node, 0, sizeof (cpp_hashnode));
+ return node;
+}
+
+/* Set up the identifier hash table. Use TABLE if non-null, otherwise
+ create our own. */
+void
+_cpp_init_hashtable (cpp_reader *pfile, hash_table *table)
+{
+ struct spec_nodes *s;
+
+ if (table == NULL)
+ {
+ pfile->our_hashtable = 1;
+ table = ht_create (13); /* 8K (=2^13) entries. */
+ table->alloc_node = (hashnode (*) (hash_table *)) alloc_node;
+
+ _obstack_begin (&pfile->hash_ob, 0, 0,
+ (void *(*) (long)) xmalloc,
+ (void (*) (void *)) free);
+ }
+
+ table->pfile = pfile;
+ pfile->hash_table = table;
+
+ /* Now we can initialize things that use the hash table. */
+ _cpp_init_directives (pfile);
+ _cpp_init_internal_pragmas (pfile);
+
+ s = &pfile->spec_nodes;
+ s->n_defined = cpp_lookup (pfile, DSC("defined"));
+ s->n_true = cpp_lookup (pfile, DSC("true"));
+ s->n_false = cpp_lookup (pfile, DSC("false"));
+ s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__"));
+ s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC;
+}
+
+/* Tear down the identifier hash table. */
+void
+_cpp_destroy_hashtable (cpp_reader *pfile)
+{
+ if (pfile->our_hashtable)
+ {
+ ht_destroy (pfile->hash_table);
+ obstack_free (&pfile->hash_ob, 0);
+ }
+}
+
+/* Returns the hash entry for the STR of length LEN, creating one
+ if necessary. */
+cpp_hashnode *
+cpp_lookup (cpp_reader *pfile, const unsigned char *str, unsigned int len)
+{
+ /* ht_lookup cannot return NULL. */
+ return CPP_HASHNODE (ht_lookup (pfile->hash_table, str, len, HT_ALLOC));
+}
+
+/* Determine whether the str STR, of length LEN, is a defined macro. */
+int
+cpp_defined (cpp_reader *pfile, const unsigned char *str, int len)
+{
+ cpp_hashnode *node;
+
+ node = CPP_HASHNODE (ht_lookup (pfile->hash_table, str, len, HT_NO_INSERT));
+
+ /* If it's of type NT_MACRO, it cannot be poisoned. */
+ return node && node->type == NT_MACRO;
+}
+
+/* For all nodes in the hashtable, callback CB with parameters PFILE,
+ the node, and V. */
+void
+cpp_forall_identifiers (cpp_reader *pfile, cpp_cb cb, void *v)
+{
+ /* We don't need a proxy since the hash table's identifier comes
+ first in cpp_hashnode. */
+ ht_forall (pfile->hash_table, (ht_cb) cb, v);
+}