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LibJS: Distinguish between omitted descriptor attributes and false ones

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When calling Object.defineProperty, there is now a difference between
omitting a descriptor attribute and specifying that it is false. For
example, "{}" and "{ configurable: false }" will have different
attribute values.
This commit is contained in:
Matthew Olsson 2020-06-02 17:13:09 -07:00 • committed by Andreas Kling
parent 5c485d4a1e
commit 5ad5322f6a
8 changed files with 186 additions and 83 deletions
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20
Libraries/LibJS/Runtime/IndexedProperties.h
View file

@ -37,7 +37,7 @@ const u32 MIN_PACKED_RESIZE_AMOUNT = 20;
struct ValueAndAttributes {
Value value;
u8 attributes { default_attributes };
PropertyAttributes attributes { default_attributes };
};
class IndexedProperties;
@ -50,10 +50,10 @@ public:
virtual bool has_index(u32 index) const = 0;
virtual Optional<ValueAndAttributes> get(u32 index) const = 0;
virtual void put(u32 index, Value value, u8 attributes = default_attributes) = 0;
virtual void put(u32 index, Value value, PropertyAttributes attributes = default_attributes) = 0;
virtual void remove(u32 index) = 0;
virtual void insert(u32 index, Value value, u8 attributes = default_attributes) = 0;
virtual void insert(u32 index, Value value, PropertyAttributes attributes = default_attributes) = 0;
virtual ValueAndAttributes take_first() = 0;
virtual ValueAndAttributes take_last() = 0;
@ -71,10 +71,10 @@ public:
virtual bool has_index(u32 index) const override;
virtual Optional<ValueAndAttributes> get(u32 index) const override;
virtual void put(u32 index, Value value, u8 attributes = default_attributes) override;
virtual void put(u32 index, Value value, PropertyAttributes attributes = default_attributes) override;
virtual void remove(u32 index) override;
virtual void insert(u32 index, Value value, u8 attributes = default_attributes) override;
virtual void insert(u32 index, Value value, PropertyAttributes attributes = default_attributes) override;
virtual ValueAndAttributes take_first() override;
virtual ValueAndAttributes take_last() override;
@ -98,10 +98,10 @@ public:
virtual bool has_index(u32 index) const override;
virtual Optional<ValueAndAttributes> get(u32 index) const override;
virtual void put(u32 index, Value value, u8 attributes = default_attributes) override;
virtual void put(u32 index, Value value, PropertyAttributes attributes = default_attributes) override;
virtual void remove(u32 index) override;
virtual void insert(u32 index, Value value, u8 attributes = default_attributes) override;
virtual void insert(u32 index, Value value, PropertyAttributes attributes = default_attributes) override;
virtual ValueAndAttributes take_first() override;
virtual ValueAndAttributes take_last() override;
@ -146,14 +146,14 @@ public:
bool has_index(u32 index) const { return m_storage->has_index(index); }
Optional<ValueAndAttributes> get(Object* this_object, u32 index, bool evaluate_accessors = true) const;
void put(Object* this_object, u32 index, Value value, u8 attributes = default_attributes, bool evaluate_accessors = true);
void put(Object* this_object, u32 index, Value value, PropertyAttributes attributes = default_attributes, bool evaluate_accessors = true);
bool remove(u32 index);
void insert(u32 index, Value value, u8 attributes = default_attributes);
void insert(u32 index, Value value, PropertyAttributes attributes = default_attributes);
ValueAndAttributes take_first(Object* this_object);
ValueAndAttributes take_last(Object* this_object);
void append(Value value, u8 attributes = default_attributes) { put(nullptr, array_like_size(), value, attributes, false); }
void append(Value value, PropertyAttributes attributes = default_attributes) { put(nullptr, array_like_size(), value, attributes, false); }
void append_all(Object* this_object, const IndexedProperties& properties, bool evaluate_accessors = true);
IndexedPropertyIterator begin(bool skip_empty = true) const { return IndexedPropertyIterator(*this, 0, skip_empty); };