dart2js: add special getter to Closure class in new emitter.

pkg/compiler/lib/src/js_emitter/program_builder.dart

Index: pkg/compiler/lib/src/js_emitter/program_builder.dart
diff --git a/pkg/compiler/lib/src/js_emitter/program_builder.dart b/pkg/compiler/lib/src/js_emitter/program_builder.dart
index 7036bb73a526943aa7b76c7b6428ec600e21bedc..3c606d6130aa25f32795a6a07c4448153b6be910 100644
--- a/pkg/compiler/lib/src/js_emitter/program_builder.dart
+++ b/pkg/compiler/lib/src/js_emitter/program_builder.dart
@@ -353,6 +353,14 @@ class ProgramBuilder {
       });
     }
 
+    if (element == backend.closureClass) {
+      // We add a special getter here to allow for tearing off a closure from
+      // itself.
+      String name = namer.getterNameFromAccessorName(
+          namer.getMappedInstanceName(Compiler.CALL_OPERATOR_NAME));
+      js.Fun function = js.js('function() { return this; }');
+      callStubs.add(_buildStubMethod(name, function));
+    }
     ClassElement implementation = element.implementation;

[floitsch, 2015/02/13 12:38:28]

New line before.

[zarah, 2015/02/13 12:52:18]

Done.

 
     // MixinApplications run through the members of their mixin. Here, we are