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LibJS: Add the TypedArray.prototype.join method
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2 changed files with 34 additions and 0 deletions
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@ -32,6 +32,7 @@ void TypedArrayPrototype::initialize(GlobalObject& object)
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define_native_function(vm.names.findIndex, find_index, 1, attr);
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define_native_function(vm.names.forEach, for_each, 1, attr);
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define_native_function(vm.names.some, some, 1, attr);
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define_native_function(vm.names.join, join, 1, attr);
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define_native_accessor(vm.well_known_symbol_to_string_tag(), to_string_tag_getter, nullptr, Attribute::Configurable);
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}
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@ -197,6 +198,38 @@ JS_DEFINE_NATIVE_FUNCTION(TypedArrayPrototype::some)
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return Value(result);
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}
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// 23.2.3.15 %TypedArray%.prototype.join ( separator ), https://tc39.es/ecma262/#sec-%typedarray%.prototype.join
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JS_DEFINE_NATIVE_FUNCTION(TypedArrayPrototype::join)
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{
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auto typed_array = typed_array_from(vm, global_object);
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if (!typed_array)
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return {};
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auto length = typed_array->array_length();
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String separator = ",";
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if (!vm.argument(0).is_undefined()) {
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separator = vm.argument(0).to_string(global_object);
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if (vm.exception())
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return {};
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}
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StringBuilder builder;
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for (size_t i = 0; i < length; ++i) {
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if (i > 0)
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builder.append(separator);
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auto value = typed_array->get(i).value_or(js_undefined());
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if (vm.exception())
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return {};
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if (value.is_nullish())
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continue;
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auto string = value.to_string(global_object);
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if (vm.exception())
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return {};
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builder.append(string);
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}
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return js_string(vm, builder.to_string());
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}
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// 23.2.3.1 get %TypedArray%.prototype.buffer, https://tc39.es/ecma262/#sec-get-%typedarray%.prototype.buffer
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JS_DEFINE_NATIVE_GETTER(TypedArrayPrototype::buffer_getter)
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{
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@ -31,6 +31,7 @@ private:
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JS_DECLARE_NATIVE_FUNCTION(find_index);
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JS_DECLARE_NATIVE_FUNCTION(for_each);
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JS_DECLARE_NATIVE_FUNCTION(some);
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JS_DECLARE_NATIVE_FUNCTION(join);
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};
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}
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