# HG changeset patch
# User Christian Humer <christian.humer@gmail.com>
# Date 1429032213 -7200
# Node ID a77b760a0307490f76a134683264e93b7394794c
# Parent  a778fbcb8d8e1677d6ac75036a98ed6ace25f2f5
Truffle-DSL: fixed on-demand generation of getNext.

diff -r a778fbcb8d8e -r a77b760a0307 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/generator/NodeGenFactory.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/generator/NodeGenFactory.java	Tue Apr 14 19:23:33 2015 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/generator/NodeGenFactory.java	Tue Apr 14 19:23:33 2015 +0200
@@ -375,11 +375,10 @@
             generated.put(specialization, clazz.add(createSpecialization(specialization, baseSpecializationType)));
         }
 
-        if (nextUsed) {
-            baseSpecialization.addOptional(createCreateNext(generated));
-        }
+        baseSpecialization.addOptional(createCreateNext(generated));
         baseSpecialization.addOptional(createCreateFallback(generated));
         baseSpecialization.addOptional(createCreatePolymorphic(generated));
+        baseSpecialization.addOptional(createGetNext(baseSpecialization));
 
         return node.getUninitializedSpecialization();
     }
@@ -413,7 +412,6 @@
 
         clazz.addOptional(createUnsupported());
         clazz.add(createGetSuppliedChildrenMethod());
-        clazz.add(createGetNext(clazz));
         clazz.add(createAcceptAndExecute());
 
         for (ExecutableTypeData type : usedTypes) {
@@ -1249,7 +1247,10 @@
         return false;
     }
 
-    private static Element createGetNext(CodeTypeElement type) {
+    private Element createGetNext(CodeTypeElement type) {
+        if (!nextUsed) {
+            return null;
+        }
         CodeExecutableElement method = new CodeExecutableElement(modifiers(PROTECTED, FINAL), type.asType(), "getNext");
         CodeTreeBuilder builder = method.createBuilder();
         builder.startReturn().cast(type.asType(), CodeTreeBuilder.singleString("this.next")).end();