* src/macrotab.c: New file.

[bison.git] / src / macrotab.c

diff --git a/src/macrotab.c b/src/macrotab.c
new file mode 100644 (file)
index 0000000..91944ac
--- /dev/null
+++ b/src/macrotab.c
@@ -0,0 +1,127 @@
+/* Macro table manager for Bison,
+   Copyright 1984, 1989, 2000 Free Software Foundation, Inc.
+
+   This file is part of Bison, the GNU Compiler Compiler.
+
+   Bison 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.
+
+   Bison 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 Bison; see the file COPYING.  If not, write to
+   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <string.h>
+
+#include "system.h"
+#include "hash.h"
+#include "files.h"
+#include "macrotab.h"
+
+struct hash_table macro_table;
+
+static unsigned long
+mhash1 (const void* item)
+{
+  return_STRING_HASH_1 (((macro_entry_t*) item)->key);
+}
+
+static unsigned long
+mhash2 (const void* item)
+{
+  return_STRING_HASH_2 (((macro_entry_t*) item)->key);
+}
+
+static int
+mcmp (const void* x, const void* y)
+{
+  return strcmp (((macro_entry_t*) x)->key, ((macro_entry_t*) y)->key);
+}
+
+void
+macro_init (void)
+{
+  hash_init (&macro_table, MTABSIZE, &mhash1, &mhash2, &mcmp);
+
+  /* Version and input file. */
+  macro_insert ("version", VERSION);
+  macro_insert ("filename", "a.y");
+
+  /* Types. */
+  macro_insert ("stype", "int");
+  macro_insert ("ltype", "yyltype");
+
+  /* Tokens. */
+  macro_insert ("tokendef", "");
+
+  /* Tables. */
+  macro_insert ("rhs", "0");
+  macro_insert ("pact", "0");
+  macro_insert ("prhs", "0");
+  macro_insert ("stos", "0");
+  macro_insert ("check", "0");
+  macro_insert ("pgoto", "0");
+  macro_insert ("table", "0");
+  macro_insert ("tname", "0");
+  macro_insert ("defact", "0");
+  macro_insert ("toknum", "0");
+  macro_insert ("defgoto", "0");
+  macro_insert ("translate", "0");
+
+  /* Various macros. */
+  macro_insert ("flag", "0");
+  macro_insert ("last", "0");
+  macro_insert ("pure", "0");
+  macro_insert ("nsym", "0");
+  macro_insert ("debug", "0");
+  macro_insert ("final", "0");
+  macro_insert ("maxtok", "0");
+  macro_insert ("ntbase", "0");
+  macro_insert ("verbose", "0");
+
+  /* Variable prefix names. */
+  macro_insert ("yyparse", "yyparse");
+  macro_insert ("yylex", "yylex");
+  macro_insert ("yyerror", "yyerror");
+  macro_insert ("yylval", "yylval");
+  macro_insert ("yychar", "yychar");
+  macro_insert ("yydebug", "yydebug");
+  macro_insert ("yynerrs", "yynerrs");
+
+  /* No parser macros. */
+  macro_insert ("nnts", "0");
+  macro_insert ("nrules", "0");
+  macro_insert ("nstates", "0");
+  macro_insert ("ntokens", "0");
+
+  /* Stack parameters. */
+  macro_insert ("maxdepth", "10000");
+  macro_insert ("initdepth", "200");
+
+  /* C++ macros. */
+  macro_insert ("name", "Parser");
+}
+
+void 
+macro_insert (char* key, char* value)
+{
+  macro_entry_t* pair = (macro_entry_t*) xmalloc (sizeof (macro_entry_t));
+  pair->key = key;
+  pair->value = value;
+  hash_insert (&macro_table, pair);
+}
+
+char*
+macro_find (char* key)
+{
+  macro_entry_t pair = { key, 0 };
+  macro_entry_t* result = hash_find_item (&macro_table, &pair);
+  return result ? result->value : 0;
+}