Add a new interceptor class JsArray, and support intercepting some list methods with the new interc…

sdk/lib/_internal/compiler/implementation/ssa/builder.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.
 
 part of ssa;
 
 class Interceptors {
   Compiler compiler;
   Interceptors(Compiler this.compiler);
 
@@ skipping 2273 matching lines @@
   }
 
   String getTargetName(ErroneousElement error, [String prefix]) {
     String result = error.name.slowToString();
     if (?prefix) {
       result = '$prefix $result';
     }
     return result;
   }
 
+  Element getInterceptor(Send send, Selector selector) {
+    if (!methodInterceptionEnabled) return null;
+    if (!backend.isInterceptorClass(currentElement.getEnclosingClass())
+        && send.receiver == null) {
+      // The call applies to [:this:] which can not be an interceptor
+      // object.
+      return null;
+    }
+    return interceptors.getStaticInterceptor(selector);
+  }
+
   void generateInstanceGetterWithCompiledReceiver(Send send,
                                                   HInstruction receiver) {
     assert(Elements.isInstanceSend(send, elements));
     // TODO(kasperl): This is a convoluted way of checking if we're
     // generating code for a compound assignment. If we are, we need
     // to get the selector from the mapping for the AST selector node.
     Selector selector = (send.asSendSet() == null)
         ? elements.getSelector(send)
         : elements.getSelector(send.selector);
     assert(selector.isGetter());
     SourceString getterName = selector.name;
-    Element interceptor = null;
-    if (methodInterceptionEnabled) {
-      interceptor = interceptors.getStaticInterceptor(selector);
-    }
+    Element interceptor = getInterceptor(send, selector);
+
     bool hasGetter = compiler.world.hasAnyUserDefinedGetter(selector);
     if (interceptor == backend.getInterceptorMethod && interceptor != null) {
       // If we're using an interceptor class, emit a call to the
       // interceptor method and then the actual dynamic call on the
       // interceptor object.
       HInstruction instruction;
       if (backend.isInterceptorClass(currentElement.getEnclosingClass())
           && send.receiver == null) {
         instruction = thisInstruction;
       } else {
@@ skipping 60 matching lines @@
     }
   }
 
   void generateInstanceSetterWithCompiledReceiver(Send send,
                                                   HInstruction receiver,
                                                   HInstruction value) {
     assert(Elements.isInstanceSend(send, elements));
     Selector selector = elements.getSelector(send);
     assert(selector.isSetter());
     SourceString setterName = selector.name;
-    Element interceptor = null;
-    if (methodInterceptionEnabled) {
-      interceptor = interceptors.getStaticInterceptor(selector);
-    }
+    Element interceptor = getInterceptor(send, selector);
     bool hasSetter = compiler.world.hasAnyUserDefinedSetter(selector);
     if (interceptor != null && interceptor == backend.getInterceptorMethod) {
       compiler.internalError(
           'Unimplemented intercepted setter call with interceptor classes');
     } else if (interceptor != null && elements[send] == null) {
       HStatic target = new HStatic(interceptor);
       add(target);
       List<HInstruction> inputs = <HInstruction>[target, receiver, value];
       addWithPosition(new HInvokeInterceptor(selector, inputs), send);
     } else {
@@ skipping 249 matching lines @@
           const SourceString('[]='), false);
     } else if (node.selector.asOperator() != null) {
       SourceString name = node.selector.asIdentifier().source;
       isNotEquals = identical(name.stringValue, '!=');
       dartMethodName = Elements.constructOperatorName(
           name, node.argumentsNode is Prefix);
     } else {
       dartMethodName = node.selector.asIdentifier().source;
     }
 
-    Element interceptor = null;
-    if (methodInterceptionEnabled) {
-      interceptor = interceptors.getStaticInterceptor(selector);
-    }
+    Element interceptor = getInterceptor(node, selector);
 
     if (interceptor != null) {
       if (interceptor == backend.getInterceptorMethod) {
         if (backend.isInterceptorClass(currentElement.getEnclosingClass())
             && node.receiver == null) {
           inputs.add(thisInstruction);
           inputs.add(localsHandler.readThis());
         } else {
           HStatic target = new HStatic(interceptor);
           add(target);
@@ skipping 2165 matching lines @@
           new HSubGraphBlockInformation(elseBranch.graph));
 
     HBasicBlock conditionStartBlock = conditionBranch.block;
     conditionStartBlock.setBlockFlow(info, joinBlock);
     SubGraph conditionGraph = conditionBranch.graph;
     HIf branch = conditionGraph.end.last;
     assert(branch is HIf);
     branch.blockInformation = conditionStartBlock.blockFlow;
   }
 }