RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-26 11:07:35 +00:00
Code Issues Activity Actions

LibJS: Integrate Symbols into objects as valid keys

Browse source 
This allows objects properties to be created for symbol keys in addition
to just plain strings/numbers
This commit is contained in:
Matthew Olsson 2020-07-07 21:38:46 -07:00 • committed by Andreas Kling
parent 9783a4936c
commit 7a1d485b19
14 changed files with 424 additions and 154 deletions
Download patch file Download diff file Expand all files Collapse all files

28
Libraries/LibJS/Runtime/Shape.h
View file

@ -26,12 +26,12 @@
#pragma once
#include <AK/FlyString.h>
#include <AK/HashMap.h>
#include <AK/OwnPtr.h>
#include <LibJS/Forward.h>
#include <LibJS/Runtime/Cell.h>
#include <LibJS/Runtime/PropertyAttributes.h>
#include <LibJS/Runtime/StringOrSymbol.h>
#include <LibJS/Runtime/Value.h>
namespace JS {
@ -42,7 +42,7 @@ struct PropertyMetadata {
};
struct TransitionKey {
FlyString property_name;
StringOrSymbol property_name;
PropertyAttributes attributes { 0 };
bool operator==(const TransitionKey& other) const
@ -63,11 +63,11 @@ public:
};
explicit Shape(GlobalObject&);
Shape(Shape& previous_shape, const FlyString& property_name, PropertyAttributes attributes, TransitionType);
Shape(Shape& previous_shape, const StringOrSymbol& property_name, PropertyAttributes attributes, TransitionType);
Shape(Shape& previous_shape, Object* new_prototype);
Shape* create_put_transition(const FlyString& name, PropertyAttributes attributes);
Shape* create_configure_transition(const FlyString& name, PropertyAttributes attributes);
Shape* create_put_transition(const StringOrSymbol&, PropertyAttributes attributes);
Shape* create_configure_transition(const StringOrSymbol&, PropertyAttributes attributes);
Shape* create_prototype_transition(Object* new_prototype);
bool is_unique() const { return m_unique; }
@ -78,12 +78,12 @@ public:
Object* prototype() { return m_prototype; }
const Object* prototype() const { return m_prototype; }
Optional<PropertyMetadata> lookup(const FlyString&) const;
const HashMap<FlyString, PropertyMetadata>& property_table() const;
Optional<PropertyMetadata> lookup(const StringOrSymbol&) const;
const HashMap<StringOrSymbol, PropertyMetadata>& property_table() const;
size_t property_count() const;
struct Property {
FlyString key;
StringOrSymbol key;
PropertyMetadata value;
};
@ -91,9 +91,9 @@ public:
void set_prototype_without_transition(Object* new_prototype) { m_prototype = new_prototype; }
void remove_property_from_unique_shape(const FlyString&, size_t offset);
void add_property_to_unique_shape(const FlyString&, PropertyAttributes attributes);
void reconfigure_property_in_unique_shape(const FlyString& property_name, PropertyAttributes attributes);
void remove_property_from_unique_shape(const StringOrSymbol&, size_t offset);
void add_property_to_unique_shape(const StringOrSymbol&, PropertyAttributes attributes);
void reconfigure_property_in_unique_shape(const StringOrSymbol& property_name, PropertyAttributes attributes);
private:
virtual const char* class_name() const override { return "Shape"; }
@ -103,11 +103,11 @@ private:
GlobalObject& m_global_object;
mutable OwnPtr<HashMap<FlyString, PropertyMetadata>> m_property_table;
mutable OwnPtr<HashMap<StringOrSymbol, PropertyMetadata>> m_property_table;
HashMap<TransitionKey, Shape*> m_forward_transitions;
Shape* m_previous { nullptr };
FlyString m_property_name;
StringOrSymbol m_property_name;
PropertyAttributes m_attributes { 0 };
bool m_unique { false };
Object* m_prototype { nullptr };
@ -120,6 +120,6 @@ template<>
struct AK::Traits<JS::TransitionKey> : public GenericTraits<JS::TransitionKey> {
static unsigned hash(const JS::TransitionKey& key)
{
return pair_int_hash(key.attributes.bits(), key.property_name.hash());
return pair_int_hash(key.attributes.bits(), Traits<JS::StringOrSymbol>::hash(key.property_name));
}
};