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[bison.git] / src / symtab.c

diff --git a/src/symtab.c b/src/symtab.c
index 0836153969423d3f544855d9d4456ed75fdbbb13..57ef636e375b9590f7b527f85aa0647afe4fb8cd 100644 (file)
--- a/src/symtab.c
+++ b/src/symtab.c
@@ -1,5 +1,5 @@
 /* Symbol table manager for Bison,
-   Copyright (C) 1984, 1989, 2000 Free Software Foundation, Inc.
+   Copyright 1984, 1989, 2000, 2001 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -20,7 +20,6 @@
 
 
 #include "system.h"
-#include "xalloc.h"
 #include "symtab.h"
 #include "gram.h"
 
@@ -43,6 +42,31 @@ hash (const char *key)
   return k % TABSIZE;
 }
 
+/*--------------------------------------------------------------.
+| Create a new symbol, named TAG, which hash value is HASHVAL.  |
+`--------------------------------------------------------------*/
+
+static bucket *
+bucket_new (const char *tag, int hashval)
+{
+  bucket *res = XMALLOC (bucket, 1);
+
+  res->link = symtab[hashval];
+  res->next = NULL;
+  res->tag = xstrdup (tag);
+  res->type_name = NULL;
+  res->value = -1;
+  res->prec = 0;
+  res->assoc = right_assoc;
+  res->user_token_number = SUNDEF;
+  res->alias = NULL;
+  res->class = unknown_sym;
+
+  nsyms++;
+
+  return res;
+}
+
 
 void
 tabinit (void)
@@ -54,6 +78,11 @@ tabinit (void)
 }
 
 
+/*----------------------------------------------------------------.
+| Find the symbol named KEY, and return it.  If it does not exist |
+| yet, create it.                                                 |
+`----------------------------------------------------------------*/
+
 bucket *
 getsym (const char *key)
 {
@@ -75,13 +104,7 @@ getsym (const char *key)
 
   if (found == 0)
     {
-      nsyms++;
-
-      bp = XCALLOC (bucket, 1);
-      bp->link = symtab[hashval];
-      bp->next = NULL;
-      bp->tag = xstrdup (key);
-      bp->class = unknown_sym;
+      bp = bucket_new (key, hashval);
 
       if (firstsymbol == NULL)
        {
@@ -119,6 +142,7 @@ free_symtab (void)
          if (bp->type_name)
            XFREE (bp->type_name);
 #endif
+         XFREE (bp->tag);
          XFREE (bp);
          bp = bptmp;
        }