Generate parameter stubs using ASTs.

sdk/lib/_internal/compiler/implementation/native_handler.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.
 
 library native;
 
 import 'dart:uri';
 import 'dart2jslib.dart' hide SourceString;
 import 'elements/elements.dart';
 import 'js_backend/js_backend.dart';
@@ skipping 790 matching lines @@
         builder.add(new HForeign(
             new DartString.literal('${parameter.name.slowToString()} = #'),
             const LiteralDartString('void'),
             <HInstruction>[jsClosure]));
       }
     });
     LiteralString jsCode = nativeBody.asLiteralString();
     builder.push(new HForeign.statement(jsCode.dartString, <HInstruction>[]));
   }
 }
-
-void generateMethodWithPrototypeCheckForElement(Compiler compiler,
-                                                StringBuffer buffer,
-                                                FunctionElement element,
-                                                String code,
-                                                String parameters) {
-  String methodName;
-  JavaScriptBackend backend = compiler.backend;
-  Namer namer = backend.namer;
-  if (element.kind == ElementKind.FUNCTION) {
-    methodName = namer.instanceMethodName(element);
-  } else if (element.kind == ElementKind.GETTER) {
-    methodName = namer.getterName(element.getLibrary(), element.name);
-  } else if (element.kind == ElementKind.SETTER) {
-    methodName = namer.setterName(element.getLibrary(), element.name);
-  } else {
-    compiler.internalError('unexpected kind: "${element.kind}"',
-                           element: element);
-  }
-
-  generateMethodWithPrototypeCheck(
-      compiler, buffer, methodName, code, parameters);
-}
-
-
-// If a method is overridden, we must check if the prototype of
-// 'this' has the method available. Otherwise, we may end up
-// calling the method from the super class. If the method is not
-// available, we make a direct call to Object.prototype.$methodName.
-// This method will patch the prototype of 'this' to the real method.
-void generateMethodWithPrototypeCheck(Compiler compiler,
-                                      StringBuffer buffer,
-                                      String methodName,
-                                      String code,
-                                      String parameters) {
-  buffer.add("  if (Object.getPrototypeOf(this).hasOwnProperty");
-  buffer.add("('$methodName')) {\n");
-  buffer.add("  $code");
-  buffer.add("  } else {\n");
-  buffer.add("    return Object.prototype.$methodName.call(this");
-  buffer.add(parameters == '' ? '' : ', $parameters');
-  buffer.add(");\n");
-  buffer.add("  }\n");
-}