glsl2: Add a constructor for _mesa_glsl_parse_state

Coming changes to the handling of built-in functions necessitate this.

1 files changed, 22 insertions, 0 deletions

diff --git a/src/glsl/glsl_parser_extras.h b/src/glsl/glsl_parser_extras.h
index fed6e8c823..e2efbd9ac9 100644
--- a/src/glsl/glsl_parser_extras.h
+++ b/src/glsl/glsl_parser_extras.h
@@ -35,7 +35,29 @@ enum _mesa_glsl_parser_targets {
    ir_shader
 };
 
+struct __GLcontextRec;
+
 struct _mesa_glsl_parse_state {
+   _mesa_glsl_parse_state(struct __GLcontextRec *ctx, GLenum target,
+			  void *mem_ctx);
+
+   /* Callers of this talloc-based new need not call delete. It's
+    * easier to just talloc_free 'ctx' (or any of its ancestors). */
+   static void* operator new(size_t size, void *ctx)
+   {
+      void *mem = talloc_zero_size(ctx, size);
+      assert(mem != NULL);
+
+      return mem;
+   }
+
+   /* If the user *does* call delete, that's OK, we will just
+    * talloc_free in that case. */
+   static void operator delete(void *mem)
+   {
+      talloc_free(mem);
+   }
+
    void *scanner;
    exec_list translation_unit;
    glsl_symbol_table *symbols;