printing ReturnStatementNode nodes

git-svn-id: svn://anubis/jtlc/trunk@25 f5bc74b8-7b62-4e90-9214-7121d538519f

parser/parser.yy

@@ -273,7 +273,12 @@ return_statement: RETURN expression SEMICOLON {
                 ;
 
 expression: assign_expr {
-            $$ = $1;
+            $$ = new ExpressionNode();
+            $$->addChild($1);
+          }
+          | literal {
+            $$ = new ExpressionNode();
+            $$->addChild($1);
           }
           ;
 
@@ -284,6 +289,17 @@ assign_expr: lvalue ASSIGN expression {
            }
            ;
 
+literal: INT_LITERAL {
+        $$ = $1;
+       }
+       | REAL_LITERAL {
+        $$ = $1;
+       }
+       | STRING_LITERAL {
+        $$ = $1;
+       }
+       ;
+
 lvalue: IDENTIFIER {
         $$ = new LValueNode();
         $$->addChild($1);