LCOV - code coverage report
Current view: top level - src/builtins - builtins-reflect.cc (source / functions) Hit Total Coverage
Test: app.info Lines: 83 83 100.0 %
Date: 2017-04-26 Functions: 22 33 66.7 %

          Line data    Source code
       1             : // Copyright 2016 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #include "src/builtins/builtins.h"
       6             : #include "src/builtins/builtins-utils.h"
       7             : 
       8             : #include "src/counters.h"
       9             : #include "src/keys.h"
      10             : #include "src/lookup.h"
      11             : #include "src/objects-inl.h"
      12             : #include "src/property-descriptor.h"
      13             : 
      14             : namespace v8 {
      15             : namespace internal {
      16             : 
      17             : // -----------------------------------------------------------------------------
      18             : // ES6 section 26.1 The Reflect Object
      19             : 
      20             : // ES6 section 26.1.3 Reflect.defineProperty
      21       49620 : BUILTIN(ReflectDefineProperty) {
      22             :   HandleScope scope(isolate);
      23             :   DCHECK_EQ(4, args.length());
      24             :   Handle<Object> target = args.at(1);
      25       16540 :   Handle<Object> key = args.at(2);
      26       16540 :   Handle<Object> attributes = args.at(3);
      27             : 
      28       16540 :   if (!target->IsJSReceiver()) {
      29         252 :     THROW_NEW_ERROR_RETURN_FAILURE(
      30             :         isolate, NewTypeError(MessageTemplate::kCalledOnNonObject,
      31             :                               isolate->factory()->NewStringFromAsciiChecked(
      32             :                                   "Reflect.defineProperty")));
      33             :   }
      34             : 
      35             :   Handle<Name> name;
      36       32912 :   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, name,
      37             :                                      Object::ToName(isolate, key));
      38             : 
      39             :   PropertyDescriptor desc;
      40       16442 :   if (!PropertyDescriptor::ToPropertyDescriptor(isolate, attributes, &desc)) {
      41          84 :     return isolate->heap()->exception();
      42             :   }
      43             : 
      44             :   Maybe<bool> result =
      45             :       JSReceiver::DefineOwnProperty(isolate, Handle<JSReceiver>::cast(target),
      46       16358 :                                     name, &desc, Object::DONT_THROW);
      47       16358 :   MAYBE_RETURN(result, isolate->heap()->exception());
      48       32716 :   return *isolate->factory()->ToBoolean(result.FromJust());
      49             : }
      50             : 
      51             : // ES6 section 26.1.4 Reflect.deleteProperty
      52       13413 : BUILTIN(ReflectDeleteProperty) {
      53             :   HandleScope scope(isolate);
      54             :   DCHECK_EQ(3, args.length());
      55             :   Handle<Object> target = args.at(1);
      56        4471 :   Handle<Object> key = args.at(2);
      57             : 
      58        4471 :   if (!target->IsJSReceiver()) {
      59         126 :     THROW_NEW_ERROR_RETURN_FAILURE(
      60             :         isolate, NewTypeError(MessageTemplate::kCalledOnNonObject,
      61             :                               isolate->factory()->NewStringFromAsciiChecked(
      62             :                                   "Reflect.deleteProperty")));
      63             :   }
      64             : 
      65             :   Handle<Name> name;
      66        8858 :   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, name,
      67             :                                      Object::ToName(isolate, key));
      68             : 
      69             :   Maybe<bool> result = JSReceiver::DeletePropertyOrElement(
      70        4415 :       Handle<JSReceiver>::cast(target), name, SLOPPY);
      71        4415 :   MAYBE_RETURN(result, isolate->heap()->exception());
      72        8186 :   return *isolate->factory()->ToBoolean(result.FromJust());
      73             : }
      74             : 
      75             : // ES6 section 26.1.6 Reflect.get
      76       46293 : BUILTIN(ReflectGet) {
      77             :   HandleScope scope(isolate);
      78             :   Handle<Object> target = args.atOrUndefined(isolate, 1);
      79       15431 :   Handle<Object> key = args.atOrUndefined(isolate, 2);
      80       26937 :   Handle<Object> receiver = args.length() > 3 ? args.at(3) : target;
      81             : 
      82       15431 :   if (!target->IsJSReceiver()) {
      83         126 :     THROW_NEW_ERROR_RETURN_FAILURE(
      84             :         isolate, NewTypeError(MessageTemplate::kCalledOnNonObject,
      85             :                               isolate->factory()->NewStringFromAsciiChecked(
      86             :                                   "Reflect.get")));
      87             :   }
      88             : 
      89             :   Handle<Name> name;
      90       30778 :   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, name,
      91             :                                      Object::ToName(isolate, key));
      92             : 
      93       46097 :   RETURN_RESULT_OR_FAILURE(
      94             :       isolate, Object::GetPropertyOrElement(receiver, name,
      95             :                                             Handle<JSReceiver>::cast(target)));
      96             : }
      97             : 
      98             : // ES6 section 26.1.7 Reflect.getOwnPropertyDescriptor
      99        8910 : BUILTIN(ReflectGetOwnPropertyDescriptor) {
     100             :   HandleScope scope(isolate);
     101             :   DCHECK_EQ(3, args.length());
     102             :   Handle<Object> target = args.at(1);
     103        2970 :   Handle<Object> key = args.at(2);
     104             : 
     105        2970 :   if (!target->IsJSReceiver()) {
     106         126 :     THROW_NEW_ERROR_RETURN_FAILURE(
     107             :         isolate, NewTypeError(MessageTemplate::kCalledOnNonObject,
     108             :                               isolate->factory()->NewStringFromAsciiChecked(
     109             :                                   "Reflect.getOwnPropertyDescriptor")));
     110             :   }
     111             : 
     112             :   Handle<Name> name;
     113        5856 :   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, name,
     114             :                                      Object::ToName(isolate, key));
     115             : 
     116             :   PropertyDescriptor desc;
     117             :   Maybe<bool> found = JSReceiver::GetOwnPropertyDescriptor(
     118        2914 :       isolate, Handle<JSReceiver>::cast(target), name, &desc);
     119        2914 :   MAYBE_RETURN(found, isolate->heap()->exception());
     120        2886 :   if (!found.FromJust()) return isolate->heap()->undefined_value();
     121        4086 :   return *desc.ToObject(isolate);
     122             : }
     123             : 
     124             : // ES6 section 26.1.8 Reflect.getPrototypeOf
     125        3723 : BUILTIN(ReflectGetPrototypeOf) {
     126             :   HandleScope scope(isolate);
     127             :   DCHECK_EQ(2, args.length());
     128             :   Handle<Object> target = args.at(1);
     129             : 
     130        1241 :   if (!target->IsJSReceiver()) {
     131         420 :     THROW_NEW_ERROR_RETURN_FAILURE(
     132             :         isolate, NewTypeError(MessageTemplate::kCalledOnNonObject,
     133             :                               isolate->factory()->NewStringFromAsciiChecked(
     134             :                                   "Reflect.getPrototypeOf")));
     135             :   }
     136        1101 :   Handle<JSReceiver> receiver = Handle<JSReceiver>::cast(target);
     137        3275 :   RETURN_RESULT_OR_FAILURE(isolate,
     138             :                            JSReceiver::GetPrototype(isolate, receiver));
     139             : }
     140             : 
     141             : // ES6 section 26.1.9 Reflect.has
     142       25845 : BUILTIN(ReflectHas) {
     143             :   HandleScope scope(isolate);
     144             :   DCHECK_EQ(3, args.length());
     145             :   Handle<Object> target = args.at(1);
     146        8615 :   Handle<Object> key = args.at(2);
     147             : 
     148        8615 :   if (!target->IsJSReceiver()) {
     149         126 :     THROW_NEW_ERROR_RETURN_FAILURE(
     150             :         isolate, NewTypeError(MessageTemplate::kCalledOnNonObject,
     151             :                               isolate->factory()->NewStringFromAsciiChecked(
     152             :                                   "Reflect.has")));
     153             :   }
     154             : 
     155             :   Handle<Name> name;
     156       17146 :   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, name,
     157             :                                      Object::ToName(isolate, key));
     158             : 
     159             :   Maybe<bool> result =
     160        8559 :       JSReceiver::HasProperty(Handle<JSReceiver>::cast(target), name);
     161       34124 :   return result.IsJust() ? *isolate->factory()->ToBoolean(result.FromJust())
     162        8671 :                          : isolate->heap()->exception();
     163             : }
     164             : 
     165             : // ES6 section 26.1.10 Reflect.isExtensible
     166        4707 : BUILTIN(ReflectIsExtensible) {
     167             :   HandleScope scope(isolate);
     168             :   DCHECK_EQ(2, args.length());
     169             :   Handle<Object> target = args.at(1);
     170             : 
     171        1569 :   if (!target->IsJSReceiver()) {
     172         126 :     THROW_NEW_ERROR_RETURN_FAILURE(
     173             :         isolate, NewTypeError(MessageTemplate::kCalledOnNonObject,
     174             :                               isolate->factory()->NewStringFromAsciiChecked(
     175             :                                   "Reflect.isExtensible")));
     176             :   }
     177             : 
     178             :   Maybe<bool> result =
     179        1527 :       JSReceiver::IsExtensible(Handle<JSReceiver>::cast(target));
     180        1527 :   MAYBE_RETURN(result, isolate->heap()->exception());
     181        2858 :   return *isolate->factory()->ToBoolean(result.FromJust());
     182             : }
     183             : 
     184             : // ES6 section 26.1.11 Reflect.ownKeys
     185        2736 : BUILTIN(ReflectOwnKeys) {
     186             :   HandleScope scope(isolate);
     187             :   DCHECK_EQ(2, args.length());
     188             :   Handle<Object> target = args.at(1);
     189             : 
     190         912 :   if (!target->IsJSReceiver()) {
     191         252 :     THROW_NEW_ERROR_RETURN_FAILURE(
     192             :         isolate, NewTypeError(MessageTemplate::kCalledOnNonObject,
     193             :                               isolate->factory()->NewStringFromAsciiChecked(
     194             :                                   "Reflect.ownKeys")));
     195             :   }
     196             : 
     197             :   Handle<FixedArray> keys;
     198        1656 :   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
     199             :       isolate, keys,
     200             :       KeyAccumulator::GetKeys(Handle<JSReceiver>::cast(target),
     201             :                               KeyCollectionMode::kOwnOnly, ALL_PROPERTIES,
     202             :                               GetKeysConversion::kConvertToString));
     203             :   return *isolate->factory()->NewJSArrayWithElements(keys);
     204             : }
     205             : 
     206             : // ES6 section 26.1.12 Reflect.preventExtensions
     207        1515 : BUILTIN(ReflectPreventExtensions) {
     208             :   HandleScope scope(isolate);
     209             :   DCHECK_EQ(2, args.length());
     210             :   Handle<Object> target = args.at(1);
     211             : 
     212         505 :   if (!target->IsJSReceiver()) {
     213         126 :     THROW_NEW_ERROR_RETURN_FAILURE(
     214             :         isolate, NewTypeError(MessageTemplate::kCalledOnNonObject,
     215             :                               isolate->factory()->NewStringFromAsciiChecked(
     216             :                                   "Reflect.preventExtensions")));
     217             :   }
     218             : 
     219             :   Maybe<bool> result = JSReceiver::PreventExtensions(
     220         463 :       Handle<JSReceiver>::cast(target), Object::DONT_THROW);
     221         463 :   MAYBE_RETURN(result, isolate->heap()->exception());
     222         786 :   return *isolate->factory()->ToBoolean(result.FromJust());
     223             : }
     224             : 
     225             : // ES6 section 26.1.13 Reflect.set
     226       40842 : BUILTIN(ReflectSet) {
     227             :   HandleScope scope(isolate);
     228             :   Handle<Object> target = args.atOrUndefined(isolate, 1);
     229       13614 :   Handle<Object> key = args.atOrUndefined(isolate, 2);
     230       13614 :   Handle<Object> value = args.atOrUndefined(isolate, 3);
     231       21930 :   Handle<Object> receiver = args.length() > 4 ? args.at(4) : target;
     232             : 
     233       13614 :   if (!target->IsJSReceiver()) {
     234         126 :     THROW_NEW_ERROR_RETURN_FAILURE(
     235             :         isolate, NewTypeError(MessageTemplate::kCalledOnNonObject,
     236             :                               isolate->factory()->NewStringFromAsciiChecked(
     237             :                                   "Reflect.set")));
     238             :   }
     239             : 
     240             :   Handle<Name> name;
     241       27144 :   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, name,
     242             :                                      Object::ToName(isolate, key));
     243             : 
     244             :   LookupIterator it = LookupIterator::PropertyOrElement(
     245       13558 :       isolate, receiver, name, Handle<JSReceiver>::cast(target));
     246             :   Maybe<bool> result = Object::SetSuperProperty(
     247       13558 :       &it, value, SLOPPY, Object::MAY_BE_STORE_FROM_KEYED);
     248       13558 :   MAYBE_RETURN(result, isolate->heap()->exception());
     249       26220 :   return *isolate->factory()->ToBoolean(result.FromJust());
     250             : }
     251             : 
     252             : // ES6 section 26.1.14 Reflect.setPrototypeOf
     253        8994 : BUILTIN(ReflectSetPrototypeOf) {
     254             :   HandleScope scope(isolate);
     255             :   DCHECK_EQ(3, args.length());
     256             :   Handle<Object> target = args.at(1);
     257             :   Handle<Object> proto = args.at(2);
     258             : 
     259        2998 :   if (!target->IsJSReceiver()) {
     260         378 :     THROW_NEW_ERROR_RETURN_FAILURE(
     261             :         isolate, NewTypeError(MessageTemplate::kCalledOnNonObject,
     262             :                               isolate->factory()->NewStringFromAsciiChecked(
     263             :                                   "Reflect.setPrototypeOf")));
     264             :   }
     265             : 
     266        3797 :   if (!proto->IsJSReceiver() && !proto->IsNull(isolate)) {
     267        1512 :     THROW_NEW_ERROR_RETURN_FAILURE(
     268             :         isolate, NewTypeError(MessageTemplate::kProtoObjectOrNull, proto));
     269             :   }
     270             : 
     271             :   Maybe<bool> result = JSReceiver::SetPrototype(
     272        2116 :       Handle<JSReceiver>::cast(target), proto, true, Object::DONT_THROW);
     273        2116 :   MAYBE_RETURN(result, isolate->heap()->exception());
     274        4176 :   return *isolate->factory()->ToBoolean(result.FromJust());
     275             : }
     276             : 
     277             : }  // namespace internal
     278             : }  // namespace v8

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