Lazy implementation of final variables.

lib/compiler/implementation/namer.dart

Index: lib/compiler/implementation/namer.dart
diff --git a/lib/compiler/implementation/namer.dart b/lib/compiler/implementation/namer.dart
index fc43d2fa4769c638aa0247219b969aa64655b66d..abaefdce30461faff54a6697ef597c24a4900478 100644
--- a/lib/compiler/implementation/namer.dart
+++ b/lib/compiler/implementation/namer.dart
@@ -35,6 +35,8 @@ class Namer {
   /** Some closures must contain their name. The name is stored in
     * [STATIC_CLOSURE_NAME_NAME]. */
   final String STATIC_CLOSURE_NAME_NAME = @'$name';
+  // TODO(floitsch): make sure the sentinel can't clash with other fields.
+  final String LAZY_INITIALIZATION_SENTINEL = @"$lazySentinel";
   static final SourceString CLOSURE_INVOCATION_NAME =
       Compiler.CALL_OPERATOR_NAME;
 
@@ -281,6 +283,16 @@ class Namer {
     }
   }
 
+  String getLazyInitializerName(Element element) {
+    // TODO(floitsch): mangle while not conflicting with other statics.
+    assert(Elements.isStaticOrTopLevelField(element));
+    return "get\$${getName(element)}";
+  }
+
+  String getLazyInitializerBailoutName(Element element) {
+    return "${getLazyInitializerName}\$bailout";
+  }
+
   String isolatePropertiesAccess(Element element) {
     return "$ISOLATE.$ISOLATE_PROPERTIES.${getName(element)}";
   }
@@ -297,6 +309,14 @@ class Namer {
     return '${isolateAccess(element)}\$bailout';
   }
 
+  String isolateLazyInitializerAccess(Element element) {
+    return "$CURRENT_ISOLATE.${getLazyInitializerName(element)}";
+  }
+
+  String isolateLazyInitializerBailoutAccess(Element element) {
+    return "$CURRENT_ISOLATE.${getLazyInitializerName(element)}\$bailout";
+  }
+
   String operatorIs(Element element) {
     return 'is\$${getName(element)}';
   }