added ElseNode, handling elsif and else correctly

git-svn-id: svn://anubis/fart/trunk@358 7f9b0f55-74a9-4bce-be96-3c2cd072584d

parser/nodes.cc

@@ -157,8 +157,15 @@ NodeRef IfNode::evaluate()
     }
     else if ( ! m_elses.isNull() )
     {
-        eval->addChild(m_elses->evaluate());
+        return m_elses->evaluate();
     }
 
     return eval;
 }
+
+NodeRef ElseNode::evaluate()
+{
+    NodeRef eval = new EvaluatePropagateNode();
+    evaluateChildren(eval);
+    return eval;
+}

parser/nodes.h

@@ -744,6 +744,12 @@ class IfNode : public Node
         NodeRef m_test_expr, m_elses;
 };
 
+class ElseNode : public Node
+{
+    public:
+        virtual NodeRef evaluate();
+};
+
 /* this class is only used to hold a set of items coming out of a class's
  * evaluate() from above. the evaluateChildren() top-level method will
  * propagate children of this class up to the level of their parent */

parser/parser.yy

@@ -431,8 +431,12 @@ if: IF LPAREN bool_expression RPAREN LCURLY general_items RCURLY if_more {
 
 if_more: /* empty */
        | ELSIF LPAREN bool_expression RPAREN LCURLY general_items RCURLY if_more {
+           $$ = new IfNode($3, $8);
+           $$->addChildren($6);
        }
        | ELSE LCURLY general_items RCURLY {
+           $$ = new ElseNode();
+           $$->addChildren($3);
        }
        ;
 %%