InvocationMirror implemented in dart2js.

lib/compiler/implementation/ssa/codegen.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 class SsaCodeGeneratorTask extends CompilerTask {
 
   final JavaScriptBackend backend;
 
   SsaCodeGeneratorTask(JavaScriptBackend backend)
       : this.backend = backend,
@@ skipping 1465 matching lines @@
       methodName = name.slowToString();
       arguments = visitArguments(node.inputs);
     } else {
       methodName = backend.namer.instanceMethodInvocationName(
           node.selector.library, name, node.selector);
       arguments = visitArguments(node.inputs);
       bool inLoop = node.block.enclosingLoopHeader != null;
 
       // Register this invocation to collect the types used at all call sites.
       Selector selector = getOptimizedSelectorFor(node, node.selector);
+      if (node.selector.name.slowToString() == 'foo' ||

[ngeoffray, 2012/10/26 08:34:55]

Remove

[Johnni Winther, 2012/10/26 10:18:01]

Done.

+          node.selector.name.slowToString() == 'bar') {
+        print('getOptimizedSelectorFor($node)=$selector, target=${target}');
+      }
       backend.registerDynamicInvocation(node, selector, types);
 
       // If we don't know what we're calling or if we are calling a getter,
       // we need to register that fact that we may be calling a closure
       // with the same arguments.
       if (target == null || target.isGetter()) {
         // TODO(kasperl): If we have a typed selector for the call, we
         // may know something about the types of closures that need
         // the specific closure call method.
         Selector call = new Selector.callClosureFrom(selector);
@@ skipping 10 matching lines @@
         world.registerDynamicInvocation(name, selector);
       }
     }
     push(jsPropertyCall(object, methodName, arguments), node);
   }
 
   Selector getOptimizedSelectorFor(HInvokeDynamic node,
                                    Selector defaultSelector) {
     // TODO(4434): For private members we need to use the untyped selector.
     if (defaultSelector.name.isPrivate()) return defaultSelector;
+    // If [noSuchMethod] has been overridden and [InvocationMirror.invokeOn]
+    // has been called we must not create a typed selector based on the receiver
+    // type.
+    if (node.element == null && // Invocation is not exact.
+        backend.compiler.enabledNoSuchMethod &&

[ngeoffray, 2012/10/26 08:34:55]

I think you can just check enabledInvokeOn.

[Johnni Winther, 2012/10/26 10:18:01]

Done.

+        backend.compiler.enabledInvokeOn) {
+      return defaultSelector;
+    }
     HType receiverHType = types[node.inputs[0]];
     DartType receiverType = receiverHType.computeType(compiler);
     if (receiverType != null) {
       return new TypedSelector(receiverType, defaultSelector);
     } else {
       return defaultSelector;
     }
   }
 
   visitInvokeDynamicSetter(HInvokeDynamicSetter node) {
@@ skipping 1464 matching lines @@
   if (leftType.canBeNull() && rightType.canBeNull()) {
     if (left.isConstantNull() || right.isConstantNull() ||
         (leftType.isPrimitive() && leftType == rightType)) {
       return '==';
     }
     return null;
   } else {
     return '===';
   }
 }