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LibJS: Add the TypedArray.prototype[Symbol.toString] getter accessor

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This commit is contained in:
Idan Horowitz 2021-06-17 18:24:48 +03:00 committed by Linus Groh
parent c5073cb287
commit 2922a6c053
Notes: sideshowbarker 2024-07-18 12:03:45 +09:00 
Author: https://github.com/IdanHo
Commit: https://github.com/SerenityOS/serenity/commit/2922a6c0531
Pull-request: https://github.com/SerenityOS/serenity/pull/8114
4 changed files with 22 additions and 1 deletions
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5
Userland/Libraries/LibJS/Runtime/TypedArray.cpp
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@ -200,6 +200,11 @@ void TypedArrayBase::visit_edges(Visitor& visitor)
} \
ClassName::~ClassName() { } \
\
String ClassName::element_name() const \
{ \
return vm().names.ClassName.as_string(); \
} \
\
PrototypeName::PrototypeName(GlobalObject& global_object) \
: Object(*global_object.typed_array_prototype()) \
{ \

2
Userland/Libraries/LibJS/Runtime/TypedArray.h
View file

@ -28,6 +28,7 @@ public:
void set_viewed_array_buffer(ArrayBuffer* array_buffer) { m_viewed_array_buffer = array_buffer; }
virtual size_t element_size() const = 0;
virtual String element_name() const = 0;
protected:
explicit TypedArrayBase(Object& prototype)
@ -151,6 +152,7 @@ private:
virtual ~ClassName(); \
static ClassName* create(GlobalObject&, u32 length); \
ClassName(u32 length, Object& prototype); \
virtual String element_name() const override; \
}; \
class PrototypeName final : public Object { \
JS_OBJECT(PrototypeName, Object); \

14
Userland/Libraries/LibJS/Runtime/TypedArrayPrototype.cpp
View file

@ -32,6 +32,8 @@ void TypedArrayPrototype::initialize(GlobalObject& object)
define_native_function(vm.names.findIndex, find_index, 1, attr);
define_native_function(vm.names.forEach, for_each, 1, attr);
define_native_function(vm.names.some, some, 1, attr);
define_native_accessor(vm.well_known_symbol_to_string_tag(), to_string_tag_getter, nullptr, Attribute::Configurable);
}
TypedArrayPrototype::~TypedArrayPrototype()
@ -232,4 +234,16 @@ JS_DEFINE_NATIVE_GETTER(TypedArrayPrototype::byte_offset_getter)
return Value(typed_array->byte_offset());
}
// 23.2.3.32 get %TypedArray%.prototype [ @@toStringTag ], https://tc39.es/ecma262/#sec-get-%typedarray%.prototype-@@tostringtag
JS_DEFINE_NATIVE_FUNCTION(TypedArrayPrototype::to_string_tag_getter)
{
auto this_value = vm.this_value(global_object);
if (!this_value.is_object())
return js_undefined();
auto& this_object = this_value.as_object();
if (!this_object.is_typed_array())
return js_undefined();
return js_string(vm, static_cast<TypedArrayBase&>(this_object).element_name());
}
}

2
Userland/Libraries/LibJS/Runtime/TypedArrayPrototype.h
View file

@ -24,7 +24,7 @@ private:
JS_DECLARE_NATIVE_GETTER(buffer_getter);
JS_DECLARE_NATIVE_GETTER(byte_length_getter);
JS_DECLARE_NATIVE_GETTER(byte_offset_getter);
JS_DECLARE_NATIVE_FUNCTION(to_string_tag_getter);
JS_DECLARE_NATIVE_FUNCTION(at);
JS_DECLARE_NATIVE_FUNCTION(every);
JS_DECLARE_NATIVE_FUNCTION(find);