lrn@google.com
22309b260c
Accessing non-existing members on null now throws NoSuchMethodError. Throwing a null value fails by throwing a NullThrownError. Methods checking for null now generally throw new ArgumentError(null). Committed: https://code.google.com/p/dart/source/detail?r=15061 Review URL: https://codereview.chromium.org//11415028 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@15136 260f80e4-7a28-3924-810f-c04153c831b5
70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/bootstrap_natives.h"
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#include "vm/exceptions.h"
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#include "vm/native_entry.h"
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#include "vm/object.h"
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namespace dart {
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DEFINE_NATIVE_ENTRY(Object_toString, 1) {
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const Instance& instance = Instance::CheckedHandle(arguments->NativeArgAt(0));
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const char* c_str = instance.ToCString();
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return String::New(c_str);
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}
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DEFINE_NATIVE_ENTRY(Object_noSuchMethod, 3) {
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const Instance& instance =
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Instance::CheckedHandle(arguments->NativeArgAt(0));
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GET_NATIVE_ARGUMENT(String, function_name, arguments->NativeArgAt(1));
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GET_NATIVE_ARGUMENT(Array, func_args, arguments->NativeArgAt(2));
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const Object& null_object = Object::Handle(Object::null());
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GrowableArray<const Object*> dart_arguments(4);
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dart_arguments.Add(&instance);
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dart_arguments.Add(&function_name);
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dart_arguments.Add(&func_args);
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dart_arguments.Add(&null_object);
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// Report if a function with same name (but different arguments) has been
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// found.
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Class& instance_class = Class::Handle(instance.clazz());
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Function& function =
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Function::Handle(instance_class.LookupDynamicFunction(function_name));
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while (function.IsNull()) {
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instance_class = instance_class.SuperClass();
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if (instance_class.IsNull()) break;
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function = instance_class.LookupDynamicFunction(function_name);
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}
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if (!function.IsNull()) {
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const int total_num_parameters = function.NumParameters();
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const Array& array = Array::Handle(Array::New(total_num_parameters - 1));
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// Skip receiver.
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for (int i = 1; i < total_num_parameters; i++) {
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array.SetAt(i - 1, String::Handle(function.ParameterNameAt(i)));
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}
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dart_arguments.Add(&array);
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}
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Exceptions::ThrowByType(Exceptions::kNoSuchMethod, dart_arguments);
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return Object::null();
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}
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DEFINE_NATIVE_ENTRY(Object_runtimeType, 1) {
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const Instance& instance = Instance::CheckedHandle(arguments->NativeArgAt(0));
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const Type& type = Type::Handle(instance.GetType());
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return type.Canonicalize();
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}
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DEFINE_NATIVE_ENTRY(AbstractType_toString, 1) {
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const AbstractType& type =
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AbstractType::CheckedHandle(arguments->NativeArgAt(0));
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return type.Name();
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}
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} // namespace dart
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