| // Copyright 2015 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_PROPERTY_DESCRIPTOR_H_ |
| #define V8_PROPERTY_DESCRIPTOR_H_ |
| |
| |
| #include "src/handles.h" |
| #include "src/property-details.h" |
| |
| |
| namespace v8 { |
| namespace internal { |
| |
| class Isolate; |
| class Object; |
| class PropertyDescriptorObject; |
| |
| class PropertyDescriptor { |
| public: |
| PropertyDescriptor() |
| : enumerable_(false), |
| has_enumerable_(false), |
| configurable_(false), |
| has_configurable_(false), |
| writable_(false), |
| has_writable_(false) {} |
| |
| // ES6 6.2.4.1 |
| static bool IsAccessorDescriptor(PropertyDescriptor* desc) { |
| return desc->has_get() || desc->has_set(); |
| } |
| |
| // ES6 6.2.4.2 |
| static bool IsDataDescriptor(PropertyDescriptor* desc) { |
| return desc->has_value() || desc->has_writable(); |
| } |
| |
| // ES6 6.2.4.3 |
| static bool IsGenericDescriptor(PropertyDescriptor* desc) { |
| return !IsAccessorDescriptor(desc) && !IsDataDescriptor(desc); |
| } |
| |
| // ES6 6.2.4.4 |
| Handle<Object> ToObject(Isolate* isolate); |
| |
| Handle<PropertyDescriptorObject> ToPropertyDescriptorObject(Isolate* isolate); |
| |
| // ES6 6.2.4.5 |
| static bool ToPropertyDescriptor(Isolate* isolate, Handle<Object> obj, |
| PropertyDescriptor* desc); |
| |
| // ES6 6.2.4.6 |
| static void CompletePropertyDescriptor(Isolate* isolate, |
| PropertyDescriptor* desc); |
| |
| bool is_empty() const { |
| return !has_enumerable() && !has_configurable() && !has_writable() && |
| !has_value() && !has_get() && !has_set(); |
| } |
| |
| bool IsRegularAccessorProperty() const { |
| return has_configurable() && has_enumerable() && !has_value() && |
| !has_writable() && has_get() && has_set(); |
| } |
| |
| bool IsRegularDataProperty() const { |
| return has_configurable() && has_enumerable() && has_value() && |
| has_writable() && !has_get() && !has_set(); |
| } |
| |
| bool enumerable() const { return enumerable_; } |
| void set_enumerable(bool enumerable) { |
| enumerable_ = enumerable; |
| has_enumerable_ = true; |
| } |
| bool has_enumerable() const { return has_enumerable_; } |
| |
| bool configurable() const { return configurable_; } |
| void set_configurable(bool configurable) { |
| configurable_ = configurable; |
| has_configurable_ = true; |
| } |
| bool has_configurable() const { return has_configurable_; } |
| |
| Handle<Object> value() const { return value_; } |
| void set_value(Handle<Object> value) { value_ = value; } |
| bool has_value() const { return !value_.is_null(); } |
| |
| bool writable() const { return writable_; } |
| void set_writable(bool writable) { |
| writable_ = writable; |
| has_writable_ = true; |
| } |
| bool has_writable() const { return has_writable_; } |
| |
| Handle<Object> get() const { return get_; } |
| void set_get(Handle<Object> get) { get_ = get; } |
| bool has_get() const { return !get_.is_null(); } |
| |
| Handle<Object> set() const { return set_; } |
| void set_set(Handle<Object> set) { set_ = set; } |
| bool has_set() const { return !set_.is_null(); } |
| |
| Handle<Object> name() const { return name_; } |
| void set_name(Handle<Object> name) { name_ = name; } |
| |
| PropertyAttributes ToAttributes() { |
| return static_cast<PropertyAttributes>( |
| (has_enumerable() && !enumerable() ? DONT_ENUM : NONE) | |
| (has_configurable() && !configurable() ? DONT_DELETE : NONE) | |
| (has_writable() && !writable() ? READ_ONLY : NONE)); |
| } |
| |
| private: |
| bool enumerable_ : 1; |
| bool has_enumerable_ : 1; |
| bool configurable_ : 1; |
| bool has_configurable_ : 1; |
| bool writable_ : 1; |
| bool has_writable_ : 1; |
| Handle<Object> value_; |
| Handle<Object> get_; |
| Handle<Object> set_; |
| Handle<Object> name_; |
| |
| // Some compilers (Xcode 5.1, ARM GCC 4.9) insist on having a copy |
| // constructor for std::vector<PropertyDescriptor>, so we can't |
| // DISALLOW_COPY_AND_ASSIGN(PropertyDescriptor); here. |
| }; |
| |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_PROPERTY_DESCRIPTOR_H_ |