dart2js: move generation of noSuchMethodStubs into ClassStubGenerator.

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

 // Copyright (c) 2014, 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 dart2js.js_emitter;
 
 class ClassStubGenerator {
   final Namer namer;
   final Compiler compiler;
   final JavaScriptBackend backend;
@@ skipping 93 matching lines @@
         jsAst.Fun function = js(
             'function(#) { return #.#(#); }',
             [ parameters, buildGetter(), closureCallName, arguments]);
 
         generatedStubs[invocationName] = function;
       }
     }
 
     return generatedStubs;
   }
+
+  Map<String, Selector> computeSelectorsForNsmHandlers() {
+
+    Map<String, Selector> jsNames = <String, Selector>{};
+
+    // Do not generate no such method handlers if there is no class.
+    if (compiler.codegenWorld.directlyInstantiatedClasses.isEmpty) {
+      return jsNames;
+    }
+
+    void addNoSuchMethodHandlers(String ignore, Set<Selector> selectors) {
+      TypeMask objectSubclassTypeMask =
+          new TypeMask.subclass(compiler.objectClass, compiler.world);
+
+      for (Selector selector in selectors) {
+        TypeMask mask = selector.mask;
+        if (mask == null) mask = objectSubclassTypeMask;
+
+        if (!mask.needsNoSuchMethodHandling(selector, compiler.world)) {
+          continue;
+        }
+        String jsName = namer.invocationMirrorInternalName(selector);
+        jsNames[jsName] = selector;
+      }
+    }
+
+    compiler.codegenWorld.invokedNames.forEach(addNoSuchMethodHandlers);
+    compiler.codegenWorld.invokedGetters.forEach(addNoSuchMethodHandlers);
+    compiler.codegenWorld.invokedSetters.forEach(addNoSuchMethodHandlers);
+    return jsNames;
+  }
+
+  jsAst.Expression generateStubForNoSuchMethod(Selector selector) {
+    // Values match JSInvocationMirror in js-helper library.
+    int type = selector.invocationMirrorKind;
+    List<String> parameterNames =
+        new List.generate(selector.argumentCount, (i) => '\$$i');
+
+    List<jsAst.Expression> argNames =
+        selector.getOrderedNamedArguments().map((String name) =>
+            js.string(name)).toList();
+
+    String methodName = selector.invocationMirrorMemberName;
+    String internalName = namer.invocationMirrorInternalName(selector);
+
+    assert(backend.isInterceptedName(Compiler.NO_SUCH_METHOD));
+    jsAst.Expression expression =
+        js('''this.#noSuchMethodName(this,
+                    #createInvocationMirror(#methodName,
+                                            #internalName,
+                                            #type,
+                                            #arguments,
+                                            #namedArguments))''',
+           {'noSuchMethodName': namer.noSuchMethodName,
+            'createInvocationMirror':
+                backend.emitter.staticFunctionAccess(
+                    backend.getCreateInvocationMirror()),
+            'methodName':
+                js.string(compiler.enableMinification
+                    ? internalName : methodName),
+            'internalName': js.string(internalName),
+            'type': js.number(type),
+            'arguments':
+                new jsAst.ArrayInitializer(parameterNames.map(js).toList()),
+            'namedArguments': new jsAst.ArrayInitializer(argNames)});
+
+    if (backend.isInterceptedName(selector.name)) {
+      return js(r'function($receiver, #) { return # }',
+                [parameterNames, expression]);
+    } else {
+      return js(r'function(#) { return # }', [parameterNames, expression]);
+    }
+  }
 }