Implement prefixes in NewExpression.

dart/frog/leg/ssa/closure.dart

Index: dart/frog/leg/ssa/closure.dart
diff --git a/dart/frog/leg/ssa/closure.dart b/dart/frog/leg/ssa/closure.dart
index 98810d571a169d5bce9c597357d5d084f3b6b4d1..5156f65dac592b51627f4548132ebcf595ea51f2 100644
--- a/dart/frog/leg/ssa/closure.dart
+++ b/dart/frog/leg/ssa/closure.dart
@@ -70,14 +70,6 @@ class ClosureData {
   bool isClosure() => closureElement !== null;
 }
 
-Map<Node, ClosureData> _closureDataCache;
-Map<Node, ClosureData> get closureDataCache() {
-  if (_closureDataCache === null) {
-    _closureDataCache = new HashMap<Node, ClosureData>();
-  }
-  return _closureDataCache;
-}
-
 class ClosureTranslator extends AbstractVisitor {
   final Compiler compiler;
   final TreeElements elements;
@@ -107,7 +99,7 @@ class ClosureTranslator extends AbstractVisitor {
   ClosureData translate(Node node) {
     // Closures have already been analyzed when visiting the surrounding
     // method/function. This also shortcuts for bailout functions.
-    ClosureData cached = closureDataCache[node];
+    ClosureData cached = compiler.closureDataCache[node];
     if (cached !== null) return cached;
 
     visit(node);
@@ -117,7 +109,7 @@ class ClosureTranslator extends AbstractVisitor {
     // The closures don't have their fields (in the closure class) set, either.
     updateClosures();
 
-    return closureDataCache[node];
+    return compiler.closureDataCache[node];
   }
 
   // This function runs through all of the existing closures and updates their
@@ -129,7 +121,7 @@ class ClosureTranslator extends AbstractVisitor {
       // The captured variables that need to be stored in a field of the closure
       // class.
       Set<Element> fieldCaptures = new Set<Element>();
-      ClosureData data = closureDataCache[closure];
+      ClosureData data = compiler.closureDataCache[closure];
       Map<Element, Element> freeVariableMapping = data.freeVariableMapping;
       // We get a copy of the keys and iterate over it, to avoid modifications
       // to the map while iterating over it.
@@ -377,7 +369,7 @@ class ClosureTranslator extends AbstractVisitor {
 
     attachCapturedScopeVariables(node);
 
-    closureDataCache[node] = closureData;
+    compiler.closureDataCache[node] = closureData;
 
     ClosureData savedClosureData = closureData;
     bool savedInsideClosure = insideClosure;