+
+/**
+ * Recursively traverse 'oper', replacing occurances of 'oldScope' with
+ * 'newScope' in the oper->locals->outer_scope field.
+ */
+void
+slang_replace_scope(slang_operation *oper,
+ slang_variable_scope *oldScope,
+ slang_variable_scope *newScope)
+{
+ GLuint i;
+ if (oper->locals != newScope &&
+ oper->locals->outer_scope == oldScope) {
+ oper->locals->outer_scope = newScope;
+ }
+ for (i = 0; i < oper->num_children; i++) {
+ slang_replace_scope(&oper->children[i], oldScope, newScope);
+ }
+}
+
+