Mesa (asm-shader-rework-1): Add destructor for symbol_table

[Ian Romanick]

Module: Mesa
Branch: asm-shader-rework-1
Commit: 946ea82bff530ac7aa8f5ebe56704fde62e14e86
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=946ea82bff530ac7aa8f5ebe56704fde62e14e86

Author: Ian Romanick <ian.d.romanick at intel.com>
Date:   Mon Jul 27 12:19:14 2009 -0700

Add destructor for symbol_table

---

 src/mesa/shader/symbol_table.c |   20 +++++++++++++++++---
 src/mesa/shader/symbol_table.h |    1 +
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/src/mesa/shader/symbol_table.c b/src/mesa/shader/symbol_table.c
index b90c495..71ce128 100644
--- a/src/mesa/shader/symbol_table.c
+++ b/src/mesa/shader/symbol_table.c
@@ -325,10 +325,24 @@ _mesa_symbol_table_ctor(void)
 {
     struct _mesa_symbol_table *table = calloc(1, sizeof(*table));
 
-    table->ht = hash_table_ctor(32, hash_table_string_hash,
-                                hash_table_string_compare);
+    if (table != NULL) {
+       table->ht = hash_table_ctor(32, hash_table_string_hash,
+				   hash_table_string_compare);
 
-    _mesa_symbol_table_push_scope(table);
+       _mesa_symbol_table_push_scope(table);
+    }
 
     return table;
 }
+
+
+void
+_mesa_symbol_table_dtor(struct _mesa_symbol_table *table)
+{
+   while (table->current_scope != NULL) {
+      _mesa_symbol_table_pop_scope(table);
+   }
+
+   hash_table_dtor(table->ht);
+   free(table);
+}
diff --git a/src/mesa/shader/symbol_table.h b/src/mesa/shader/symbol_table.h
index c543615..0c054ef 100644
--- a/src/mesa/shader/symbol_table.h
+++ b/src/mesa/shader/symbol_table.h
@@ -38,6 +38,7 @@ extern void *_mesa_symbol_table_find_symbol(
 
 extern struct _mesa_symbol_table *_mesa_symbol_table_ctor(void);
 
+extern void _mesa_symbol_table_dtor(struct _mesa_symbol_table *);
 
 extern struct _mesa_symbol_table_iterator *_mesa_symbol_table_iterator_ctor(
     struct _mesa_symbol_table *table, int name_space, const char *name);