Check closure data for serialization

pkg/compiler/lib/src/elements/modelx.dart

Index: pkg/compiler/lib/src/elements/modelx.dart
diff --git a/pkg/compiler/lib/src/elements/modelx.dart b/pkg/compiler/lib/src/elements/modelx.dart
index 74ac6ad33fbd8ce3c2e1ba3d1340d000cceff410..67518aea572111b994efe62983c54b3e8203119e 100644
--- a/pkg/compiler/lib/src/elements/modelx.dart
+++ b/pkg/compiler/lib/src/elements/modelx.dart
@@ -2284,18 +2284,30 @@ class DeferredLoaderGetterElementX extends GetterElementX
 
 class ConstructorBodyElementX extends BaseFunctionElementX
     implements ConstructorBodyElement {
-  ConstructorElementX constructor;
+  final ResolvedAst _resolvedAst;
+  final ConstructorElement constructor;
 
-  ConstructorBodyElementX(ConstructorElementX constructor)
-      : this.constructor = constructor,
+  ConstructorBodyElementX(
+      ResolvedAst resolvedAst, ConstructorElement constructor)
+      : this._resolvedAst = resolvedAst,
+        this.constructor = constructor,
         super(constructor.name, ElementKind.GENERATIVE_CONSTRUCTOR_BODY,
             Modifiers.EMPTY, constructor.enclosingElement) {
     functionSignature = constructor.functionSignature;
   }
 
-  bool get hasNode => constructor.hasNode;
+  bool get hasNode => _resolvedAst.kind == ResolvedAstKind.PARSED;
 
-  FunctionExpression get node => constructor.node;
+  FunctionExpression get node => _resolvedAst.node;
+
+  ResolvedAst get resolvedAst {
+    if (_resolvedAst.kind == ResolvedAstKind.PARSED) {
+      return new ParsedResolvedAst(declaration, _resolvedAst.node,
+          _resolvedAst.body, _resolvedAst.elements, _resolvedAst.sourceUri);
+    } else {
+      return new SynthesizedResolvedAst(declaration, _resolvedAst.kind);
+    }
+  }
 
   List<MetadataAnnotation> get metadata => constructor.metadata;
 
@@ -2307,6 +2319,8 @@ class ConstructorBodyElementX extends BaseFunctionElementX
     return null;
   }
 
+  int get sourceOffset => constructor.sourceOffset;
+
   Token get position => constructor.position;
 
   Element get outermostEnclosingMemberOrTopLevel => constructor;