Simplify runtime type support.

sdk/lib/_internal/compiler/implementation/js_backend/namer.dart

Index: sdk/lib/_internal/compiler/implementation/js_backend/namer.dart
diff --git a/sdk/lib/_internal/compiler/implementation/js_backend/namer.dart b/sdk/lib/_internal/compiler/implementation/js_backend/namer.dart
index 1236aa6d9f53ec48e24144c588f420c7b02b82be..55a4f9917a904ba0553f408c394c0b9a290b5eeb 100644
--- a/sdk/lib/_internal/compiler/implementation/js_backend/namer.dart
+++ b/sdk/lib/_internal/compiler/implementation/js_backend/namer.dart
@@ -206,7 +206,7 @@ class Namer {
    * Returns a preferred JS-id for the given top-level or static element.
    * The returned id is guaranteed to be a valid JS-id.
    */
-  String _computeGuess(Element element) {
+  String _computeGuess(Element element, {allowUnsafeName: false}) {

[ngeoffray, 2012/11/15 08:58:09]

bool and no need to make it optional

[karlklose, 2012/11/16 13:37:19]

Done.

     assert(!element.isInstanceMember());
     LibraryElement lib = element.getLibrary();
     String name;
@@ -230,8 +230,8 @@ class Namer {
     } else {
       name = element.name.slowToString();
     }
-    // Prefix the name with '$' if it is reserved.
-    return safeName(name);
+    // Prefix the name with '$' if it is reserved and we generate safe names.
+    return allowUnsafeName ? name : safeName(name);
   }
 
   String getBailoutName(Element element) {
@@ -246,7 +246,7 @@ class Namer {
    * For accessing statics consider calling
    * [isolateAccess]/[isolateBailoutAccess] or [isolatePropertyAccess] instead.
    */
-  String getName(Element element) {
+  String getName(Element element, {allowUnsafeName: false}) {

[ngeoffray, 2012/11/15 08:58:09]

bool

[karlklose, 2012/11/16 13:37:19]

Done.

     if (element.isInstanceMember()) {
       if (element.kind == ElementKind.GENERATIVE_CONSTRUCTOR_BODY
           || element.kind == ElementKind.FUNCTION) {
@@ -264,12 +264,11 @@ class Namer {
     } else {
       // Use declaration element to ensure invariant on [globals].
       element = element.declaration;
-
       // Dealing with a top-level or static element.
       String cached = globals[element];
       if (cached != null) return cached;
 
-      String guess = _computeGuess(element);
+      String guess = _computeGuess(element, allowUnsafeName: allowUnsafeName);
       ElementKind kind = element.kind;
       if (identical(kind, ElementKind.VARIABLE) ||
           identical(kind, ElementKind.PARAMETER)) {