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https://github.com/RGBCube/serenity
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LibJS: Integrate Symbols into objects as valid keys
This allows objects properties to be created for symbol keys in addition to just plain strings/numbers
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parent
9783a4936c
commit
7a1d485b19
14 changed files with 424 additions and 154 deletions
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@ -26,12 +26,12 @@
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#pragma once
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#include <AK/FlyString.h>
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#include <AK/HashMap.h>
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#include <AK/OwnPtr.h>
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#include <LibJS/Forward.h>
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#include <LibJS/Runtime/Cell.h>
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#include <LibJS/Runtime/PropertyAttributes.h>
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#include <LibJS/Runtime/StringOrSymbol.h>
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#include <LibJS/Runtime/Value.h>
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namespace JS {
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@ -42,7 +42,7 @@ struct PropertyMetadata {
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};
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struct TransitionKey {
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FlyString property_name;
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StringOrSymbol property_name;
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PropertyAttributes attributes { 0 };
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bool operator==(const TransitionKey& other) const
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@ -63,11 +63,11 @@ public:
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};
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explicit Shape(GlobalObject&);
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Shape(Shape& previous_shape, const FlyString& property_name, PropertyAttributes attributes, TransitionType);
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Shape(Shape& previous_shape, const StringOrSymbol& property_name, PropertyAttributes attributes, TransitionType);
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Shape(Shape& previous_shape, Object* new_prototype);
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Shape* create_put_transition(const FlyString& name, PropertyAttributes attributes);
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Shape* create_configure_transition(const FlyString& name, PropertyAttributes attributes);
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Shape* create_put_transition(const StringOrSymbol&, PropertyAttributes attributes);
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Shape* create_configure_transition(const StringOrSymbol&, PropertyAttributes attributes);
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Shape* create_prototype_transition(Object* new_prototype);
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bool is_unique() const { return m_unique; }
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@ -78,12 +78,12 @@ public:
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Object* prototype() { return m_prototype; }
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const Object* prototype() const { return m_prototype; }
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Optional<PropertyMetadata> lookup(const FlyString&) const;
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const HashMap<FlyString, PropertyMetadata>& property_table() const;
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Optional<PropertyMetadata> lookup(const StringOrSymbol&) const;
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const HashMap<StringOrSymbol, PropertyMetadata>& property_table() const;
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size_t property_count() const;
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struct Property {
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FlyString key;
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StringOrSymbol key;
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PropertyMetadata value;
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};
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@ -91,9 +91,9 @@ public:
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void set_prototype_without_transition(Object* new_prototype) { m_prototype = new_prototype; }
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void remove_property_from_unique_shape(const FlyString&, size_t offset);
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void add_property_to_unique_shape(const FlyString&, PropertyAttributes attributes);
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void reconfigure_property_in_unique_shape(const FlyString& property_name, PropertyAttributes attributes);
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void remove_property_from_unique_shape(const StringOrSymbol&, size_t offset);
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void add_property_to_unique_shape(const StringOrSymbol&, PropertyAttributes attributes);
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void reconfigure_property_in_unique_shape(const StringOrSymbol& property_name, PropertyAttributes attributes);
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private:
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virtual const char* class_name() const override { return "Shape"; }
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@ -103,11 +103,11 @@ private:
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GlobalObject& m_global_object;
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mutable OwnPtr<HashMap<FlyString, PropertyMetadata>> m_property_table;
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mutable OwnPtr<HashMap<StringOrSymbol, PropertyMetadata>> m_property_table;
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HashMap<TransitionKey, Shape*> m_forward_transitions;
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Shape* m_previous { nullptr };
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FlyString m_property_name;
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StringOrSymbol m_property_name;
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PropertyAttributes m_attributes { 0 };
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bool m_unique { false };
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Object* m_prototype { nullptr };
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@ -120,6 +120,6 @@ template<>
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struct AK::Traits<JS::TransitionKey> : public GenericTraits<JS::TransitionKey> {
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static unsigned hash(const JS::TransitionKey& key)
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{
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return pair_int_hash(key.attributes.bits(), key.property_name.hash());
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return pair_int_hash(key.attributes.bits(), Traits<JS::StringOrSymbol>::hash(key.property_name));
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}
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};
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