# HG changeset patch
# User Christian Humer <christian.humer@gmail.com>
# Date 1375109410 -7200
# Node ID a9cb98ff8fd9644461fa95652806da7af0b7789d
# Parent  42ab15e31736eebf54b418bd13d170da9094b2b8
Truffle-DSL: Fixed compile error for nodes with no children and empty constructor.

diff -r 42ab15e31736 -r a9cb98ff8fd9 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeCodeGenerator.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeCodeGenerator.java	Mon Jul 29 12:11:59 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeCodeGenerator.java	Mon Jul 29 16:50:10 2013 +0200
@@ -623,12 +623,22 @@
             return false;
         }
         VariableElement var = element.getParameters().get(0);
-        TypeElement type = Utils.findNearestEnclosingType(var);
-
-        if (!Utils.typeEquals(var.asType(), type.asType())) {
-            return false;
+        TypeElement enclosingType = Utils.findNearestEnclosingType(var);
+        if (Utils.typeEquals(var.asType(), enclosingType.asType())) {
+            return true;
         }
-        return true;
+        List<TypeElement> types = Utils.getDirectSuperTypes(enclosingType);
+        for (TypeElement type : types) {
+            if (!(type instanceof CodeTypeElement)) {
+                // no copy constructors which are not generated types
+                return false;
+            }
+
+            if (Utils.typeEquals(var.asType(), type.asType())) {
+                return true;
+            }
+        }
+        return false;
     }
 
     @Override
@@ -686,7 +696,7 @@
 
                 createFactoryMethods(node, clazz, createVisibility);
 
-                if (node.getPolymorphicDepth() > 1) {
+                if (node.isPolymorphic()) {
                     PolymorphicNodeFactory generic = new PolymorphicNodeFactory(getContext(), generatedNode, true);
                     add(generic, node.getGenericPolymorphicSpecialization());
 
@@ -1079,7 +1089,7 @@
 
             if (node.needsRewrites(context)) {
 
-                if (node.getPolymorphicDepth() > 1) {
+                if (node.isPolymorphic()) {
 
                     CodeVariableElement var = new CodeVariableElement(modifiers(PROTECTED), clazz.asType(), "next0");
                     var.getAnnotationMirrors().add(new CodeAnnotationMirror(getContext().getTruffleTypes().getChildAnnotation()));
@@ -1359,9 +1369,7 @@
         private CodeExecutableElement createCopyConstructor(CodeTypeElement type, ExecutableElement superConstructor) {
             CodeExecutableElement method = new CodeExecutableElement(null, type.getSimpleName().toString());
             CodeTreeBuilder builder = method.createBuilder();
-            if (!(superConstructor == null && type.getFields().isEmpty())) {
-                method.getParameters().add(new CodeVariableElement(type.asType(), "copy"));
-            }
+            method.getParameters().add(new CodeVariableElement(type.asType(), "copy"));
 
             if (superConstructor != null) {
                 builder.startStatement().startSuperCall().string("copy").end().end();
@@ -1398,7 +1406,7 @@
                 }
                 builder.end();
             }
-            if (getModel().getNode().getPolymorphicDepth() > 1) {
+            if (getModel().getNode().isPolymorphic()) {
                 builder.statement("this.next0 = adoptChild(copy.next0)");
             }
 
@@ -1554,7 +1562,7 @@
                 builder.startIf().string("allowed").end().startBlock();
             }
 
-            if (!current.isGeneric() || node.getPolymorphicDepth() <= 1) {
+            if (!current.isGeneric() || !node.isPolymorphic()) {
                 // generic rewrite
                 builder.tree(createRewriteGeneric(builder, current));
             } else {
@@ -2175,7 +2183,7 @@
 
             NodeData node = specialization.getNode();
 
-            if (node.needsRewrites(getContext()) && node.getPolymorphicDepth() > 1) {
+            if (node.needsRewrites(getContext()) && node.isPolymorphic()) {
                 createIsCompatible(clazz, specialization);
             }
 
@@ -2185,15 +2193,25 @@
 
         protected void createConstructors(CodeTypeElement clazz) {
             TypeElement superTypeElement = Utils.fromTypeMirror(clazz.getSuperclass());
+            SpecializationData specialization = getModel();
+            NodeData node = specialization.getNode();
             for (ExecutableElement constructor : ElementFilter.constructorsIn(superTypeElement.getEnclosedElements())) {
-                if (getModel().getNode().getUninitializedSpecialization() != null && !getModel().isUninitialized() &&
-                                (constructor.getParameters().size() != 1 || constructor.getParameters().get(0).getSimpleName().toString().equals(baseClassName(getModel().getNode())))) {
-                    continue;
+                if (specialization.isUninitialized()) {
+                    // ignore copy constructors for uninitialized if not polymorphic
+                    if (isCopyConstructor(constructor) && !node.isPolymorphic()) {
+                        continue;
+                    }
+                } else if (node.getUninitializedSpecialization() != null) {
+                    // ignore others than copy constructors for specialized nodes
+                    if (!isCopyConstructor(constructor)) {
+                        continue;
+                    }
                 }
 
                 CodeExecutableElement superConstructor = createSuperConstructor(clazz, constructor);
+
                 if (superConstructor != null) {
-                    if (getModel().isGeneric() && getModel().getNode().getPolymorphicDepth() > 1) {
+                    if (getModel().isGeneric() && node.isPolymorphic()) {
                         CodeTree body = superConstructor.getBodyTree();
                         CodeTreeBuilder builder = superConstructor.createBuilder();
                         builder.tree(body);
diff -r 42ab15e31736 -r a9cb98ff8fd9 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeData.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeData.java	Mon Jul 29 12:11:59 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeData.java	Mon Jul 29 16:50:10 2013 +0200
@@ -94,6 +94,10 @@
         return polymorphicDepth;
     }
 
+    public boolean isPolymorphic() {
+        return polymorphicDepth > 1;
+    }
+
     void setPolymorphicDepth(int polymorphicDepth) {
         this.polymorphicDepth = polymorphicDepth;
     }
diff -r 42ab15e31736 -r a9cb98ff8fd9 graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeParser.java
--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeParser.java	Mon Jul 29 12:11:59 2013 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/NodeParser.java	Mon Jul 29 16:50:10 2013 +0200
@@ -214,7 +214,7 @@
     }
 
     private void createPolymorphicSpecializations(NodeData node) {
-        if (!node.needsRewrites(context) || node.getPolymorphicDepth() <= 1) {
+        if (!node.needsRewrites(context) || !node.isPolymorphic()) {
             node.setPolymorphicSpecializations(Collections.<SpecializationData> emptyList());
             return;
         }
@@ -653,6 +653,7 @@
             }
         }
 
+        // initialize polymorphic depth
         if (node.getPolymorphicDepth() < 0) {
             node.setPolymorphicDepth(specializationCount - 1);
         }