Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 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 | #ifndef V8_PROPERTY_DESCRIPTOR_H_ |
| 6 | #define V8_PROPERTY_DESCRIPTOR_H_ |
| 7 | |
| 8 | |
| 9 | #include "src/handles.h" |
| 10 | #include "src/property-details.h" |
| 11 | |
| 12 | |
| 13 | namespace v8 { |
| 14 | namespace internal { |
| 15 | |
| 16 | class Isolate; |
| 17 | class Object; |
| 18 | |
| 19 | class PropertyDescriptor { |
| 20 | public: |
| 21 | PropertyDescriptor() |
| 22 | : enumerable_(false), |
| 23 | has_enumerable_(false), |
| 24 | configurable_(false), |
| 25 | has_configurable_(false), |
| 26 | writable_(false), |
| 27 | has_writable_(false) {} |
| 28 | |
| 29 | // ES6 6.2.4.1 |
| 30 | static bool IsAccessorDescriptor(PropertyDescriptor* desc) { |
| 31 | return desc->has_get() || desc->has_set(); |
| 32 | } |
| 33 | |
| 34 | // ES6 6.2.4.2 |
| 35 | static bool IsDataDescriptor(PropertyDescriptor* desc) { |
| 36 | return desc->has_value() || desc->has_writable(); |
| 37 | } |
| 38 | |
| 39 | // ES6 6.2.4.3 |
| 40 | static bool IsGenericDescriptor(PropertyDescriptor* desc) { |
| 41 | return !IsAccessorDescriptor(desc) && !IsDataDescriptor(desc); |
| 42 | } |
| 43 | |
| 44 | // ES6 6.2.4.4 |
| 45 | Handle<Object> ToObject(Isolate* isolate); |
| 46 | |
| 47 | // ES6 6.2.4.5 |
| 48 | static bool ToPropertyDescriptor(Isolate* isolate, Handle<Object> obj, |
| 49 | PropertyDescriptor* desc); |
| 50 | |
| 51 | // ES6 6.2.4.6 |
| 52 | static void CompletePropertyDescriptor(Isolate* isolate, |
| 53 | PropertyDescriptor* desc); |
| 54 | |
| 55 | bool is_empty() const { |
| 56 | return !has_enumerable() && !has_configurable() && !has_writable() && |
| 57 | !has_value() && !has_get() && !has_set(); |
| 58 | } |
| 59 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 60 | bool IsRegularAccessorProperty() const { |
| 61 | return has_configurable() && has_enumerable() && !has_value() && |
| 62 | !has_writable() && has_get() && has_set(); |
| 63 | } |
| 64 | |
| 65 | bool IsRegularDataProperty() const { |
| 66 | return has_configurable() && has_enumerable() && has_value() && |
| 67 | has_writable() && !has_get() && !has_set(); |
| 68 | } |
| 69 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 70 | bool enumerable() const { return enumerable_; } |
| 71 | void set_enumerable(bool enumerable) { |
| 72 | enumerable_ = enumerable; |
| 73 | has_enumerable_ = true; |
| 74 | } |
| 75 | bool has_enumerable() const { return has_enumerable_; } |
| 76 | |
| 77 | bool configurable() const { return configurable_; } |
| 78 | void set_configurable(bool configurable) { |
| 79 | configurable_ = configurable; |
| 80 | has_configurable_ = true; |
| 81 | } |
| 82 | bool has_configurable() const { return has_configurable_; } |
| 83 | |
| 84 | Handle<Object> value() const { return value_; } |
| 85 | void set_value(Handle<Object> value) { value_ = value; } |
| 86 | bool has_value() const { return !value_.is_null(); } |
| 87 | |
| 88 | bool writable() const { return writable_; } |
| 89 | void set_writable(bool writable) { |
| 90 | writable_ = writable; |
| 91 | has_writable_ = true; |
| 92 | } |
| 93 | bool has_writable() const { return has_writable_; } |
| 94 | |
| 95 | Handle<Object> get() const { return get_; } |
| 96 | void set_get(Handle<Object> get) { get_ = get; } |
| 97 | bool has_get() const { return !get_.is_null(); } |
| 98 | |
| 99 | Handle<Object> set() const { return set_; } |
| 100 | void set_set(Handle<Object> set) { set_ = set; } |
| 101 | bool has_set() const { return !set_.is_null(); } |
| 102 | |
| 103 | Handle<Object> name() const { return name_; } |
| 104 | void set_name(Handle<Object> name) { name_ = name; } |
| 105 | |
| 106 | PropertyAttributes ToAttributes() { |
| 107 | return static_cast<PropertyAttributes>( |
| 108 | (has_enumerable() && !enumerable() ? DONT_ENUM : NONE) | |
| 109 | (has_configurable() && !configurable() ? DONT_DELETE : NONE) | |
| 110 | (has_writable() && !writable() ? READ_ONLY : NONE)); |
| 111 | } |
| 112 | |
| 113 | private: |
| 114 | bool enumerable_ : 1; |
| 115 | bool has_enumerable_ : 1; |
| 116 | bool configurable_ : 1; |
| 117 | bool has_configurable_ : 1; |
| 118 | bool writable_ : 1; |
| 119 | bool has_writable_ : 1; |
| 120 | Handle<Object> value_; |
| 121 | Handle<Object> get_; |
| 122 | Handle<Object> set_; |
| 123 | Handle<Object> name_; |
| 124 | |
| 125 | // Some compilers (Xcode 5.1, ARM GCC 4.9) insist on having a copy |
| 126 | // constructor for std::vector<PropertyDescriptor>, so we can't |
| 127 | // DISALLOW_COPY_AND_ASSIGN(PropertyDescriptor); here. |
| 128 | }; |
| 129 | |
| 130 | } // namespace internal |
| 131 | } // namespace v8 |
| 132 | |
| 133 | #endif // V8_PROPERTY_DESCRIPTOR_H_ |