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https://github.com/RGBCube/serenity
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581f20e6f2
This makes the implicit run-time assertion in PropertyName::to_string() into an explicit compile-time requirement, removes a wasteful FlyString -> PropertyName -> FlyString construction from NativeFunction::create() and allows setting the function name to a null string for anonymous native functions.
68 lines
2 KiB
C++
68 lines
2 KiB
C++
/*
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* Copyright (c) 2020, Matthew Olsson <mattco@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/Error.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/RegExpConstructor.h>
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#include <LibJS/Runtime/RegExpObject.h>
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namespace JS {
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RegExpConstructor::RegExpConstructor(GlobalObject& global_object)
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: NativeFunction(vm().names.RegExp.as_string(), *global_object.function_prototype())
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{
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}
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void RegExpConstructor::initialize(GlobalObject& global_object)
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{
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auto& vm = this->vm();
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NativeFunction::initialize(global_object);
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// 22.2.4.1 RegExp.prototype, https://tc39.es/ecma262/#sec-regexp.prototype
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define_property(vm.names.prototype, global_object.regexp_prototype(), 0);
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define_property(vm.names.length, Value(2), Attribute::Configurable);
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define_native_accessor(*vm.well_known_symbol_species(), symbol_species_getter, {}, Attribute::Configurable);
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}
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RegExpConstructor::~RegExpConstructor()
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{
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}
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// 22.2.3.1 RegExp ( pattern, flags ), https://tc39.es/ecma262/#sec-regexp-pattern-flags
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Value RegExpConstructor::call()
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{
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return construct(*this);
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}
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// 22.2.3.1 RegExp ( pattern, flags ), https://tc39.es/ecma262/#sec-regexp-pattern-flags
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Value RegExpConstructor::construct(FunctionObject&)
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{
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auto& vm = this->vm();
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String pattern = "";
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String flags = "";
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if (!vm.argument(0).is_undefined()) {
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pattern = 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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if (!vm.argument(1).is_undefined()) {
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flags = vm.argument(1).to_string(global_object());
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if (vm.exception())
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return {};
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}
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// FIXME: Use RegExpAlloc (which uses OrdinaryCreateFromConstructor)
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return RegExpObject::create(global_object(), pattern, flags);
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}
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// 22.2.4.2 get RegExp [ @@species ], https://tc39.es/ecma262/#sec-get-regexp-@@species
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JS_DEFINE_NATIVE_GETTER(RegExpConstructor::symbol_species_getter)
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{
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return vm.this_value(global_object);
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}
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}
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