Compute function types together with the parameters.

lib/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('leg.dart');
 #import('elements/elements.dart');
 #import('scanner/scannerlib.dart');
 #import('ssa/ssa.dart');
@@ skipping 232 matching lines @@
       isRedirecting = true;
     } else {
       hasBody = true;
     }
   }
 
   if (!hasBody) {
     compiler.emitter.nativeEmitter.nativeMethods.add(element);
   }
 
-  FunctionParameters parameters = element.computeParameters(builder.compiler);
+  FunctionSignature parameters = element.computeSignature(builder.compiler);
   if (!hasBody) {
     List<String> arguments = <String>[];
     List<HInstruction> inputs = <HInstruction>[];
     String receiver = '';
     if (element.isInstanceMember()) {
       receiver = '#.';
       inputs.add(builder.localsHandler.readThis());
     }
     parameters.forEachParameter((Element parameter) {
       Type type = parameter.computeType(compiler);
@@ skipping 46 matching lines @@
 }
 
 void generateMethodWithPrototypeCheckForElement(Compiler compiler,
                                                 StringBuffer buffer,
                                                 FunctionElement element,
                                                 String code,
                                                 String parameters) {
   String methodName;
   Namer namer = compiler.namer;
   if (element.kind == ElementKind.FUNCTION) {
-    FunctionParameters computedParameters =
-        element.computeParameters(compiler);
+    FunctionSignature signature = element.computeSignature(compiler);
     methodName = namer.instanceMethodName(
-        element.getLibrary(), element.name, computedParameters.parameterCount);
+        element.getLibrary(), element.name, signature.parameterCount);
   } 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(
@@ skipping 13 matching lines @@
                                       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");
 }