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https://github.com/LadybirdBrowser/ladybird.git
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50428ea8d2
Intrinsics, i.e. mostly constructor and prototype objects, but also things like empty and new object shape now live on a new heap-allocated JS::Intrinsics object, thus completing the long journey of taking all the magic away from the global object. This represents the Realm's [[Intrinsics]] slot in the spec and matches its existing [[GlobalObject]] / [[GlobalEnv]] slots in terms of architecture. In the majority of cases it should now be possibly to fully allocate a regular object without the global object existing, and in fact that's what we do now - the realm is allocated before the global object, and the intrinsics between both :^)
120 lines
8.4 KiB
C++
120 lines
8.4 KiB
C++
/*
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* Copyright (c) 2020-2022, Linus Groh <linusg@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/AbstractOperations.h>
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#include <LibJS/Runtime/Error.h>
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#include <LibJS/Runtime/ErrorConstructor.h>
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#include <LibJS/Runtime/GlobalObject.h>
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namespace JS {
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ErrorConstructor::ErrorConstructor(Realm& realm)
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: NativeFunction(vm().names.Error.as_string(), *realm.intrinsics().function_prototype())
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{
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}
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void ErrorConstructor::initialize(Realm& realm)
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{
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auto& vm = this->vm();
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NativeFunction::initialize(realm);
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// 20.5.2.1 Error.prototype, https://tc39.es/ecma262/#sec-error.prototype
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define_direct_property(vm.names.prototype, realm.intrinsics().error_prototype(), 0);
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define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
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}
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// 20.5.1.1 Error ( message [ , options ] ), https://tc39.es/ecma262/#sec-error-message
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ThrowCompletionOr<Value> ErrorConstructor::call()
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{
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// 1. If NewTarget is undefined, let newTarget be the active function object; else let newTarget be NewTarget.
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return TRY(construct(*this));
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}
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// 20.5.1.1 Error ( message [ , options ] ), https://tc39.es/ecma262/#sec-error-message
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ThrowCompletionOr<Object*> ErrorConstructor::construct(FunctionObject& new_target)
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{
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auto& vm = this->vm();
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auto message = vm.argument(0);
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auto options = vm.argument(1);
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// 2. Let O be ? OrdinaryCreateFromConstructor(newTarget, "%Error.prototype%", « [[ErrorData]] »).
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auto* error = TRY(ordinary_create_from_constructor<Error>(vm, new_target, &Intrinsics::error_prototype));
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// 3. If message is not undefined, then
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if (!message.is_undefined()) {
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// a. Let msg be ? ToString(message).
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auto msg = TRY(message.to_string(vm));
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// b. Perform CreateNonEnumerableDataPropertyOrThrow(O, "message", msg).
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error->create_non_enumerable_data_property_or_throw(vm.names.message, js_string(vm, move(msg)));
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}
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// 4. Perform ? InstallErrorCause(O, options).
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TRY(error->install_error_cause(options));
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// 5. Return O.
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return error;
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}
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#define __JS_ENUMERATE(ClassName, snake_name, PrototypeName, ConstructorName, ArrayType) \
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ConstructorName::ConstructorName(Realm& realm) \
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: NativeFunction(vm().names.ClassName.as_string(), *static_cast<Object*>(realm.intrinsics().error_constructor())) \
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{ \
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} \
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\
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void ConstructorName::initialize(Realm& realm) \
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{ \
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auto& vm = this->vm(); \
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NativeFunction::initialize(realm); \
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\
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/* 20.5.6.2.1 NativeError.prototype, https://tc39.es/ecma262/#sec-nativeerror.prototype */ \
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define_direct_property(vm.names.prototype, realm.intrinsics().snake_name##_prototype(), 0); \
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\
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define_direct_property(vm.names.length, Value(1), Attribute::Configurable); \
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} \
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\
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ConstructorName::~ConstructorName() = default; \
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\
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/* 20.5.6.1.1 NativeError ( message [ , options ] ), https://tc39.es/ecma262/#sec-nativeerror */ \
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ThrowCompletionOr<Value> ConstructorName::call() \
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{ \
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/* 1. If NewTarget is undefined, let newTarget be the active function object; else let newTarget be NewTarget. */ \
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return TRY(construct(*this)); \
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} \
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\
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/* 20.5.6.1.1 NativeError ( message [ , options ] ), https://tc39.es/ecma262/#sec-nativeerror */ \
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ThrowCompletionOr<Object*> ConstructorName::construct(FunctionObject& new_target) \
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{ \
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auto& vm = this->vm(); \
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\
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auto message = vm.argument(0); \
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auto options = vm.argument(1); \
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\
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/* 2. Let O be ? OrdinaryCreateFromConstructor(newTarget, "%NativeError.prototype%", « [[ErrorData]] »). */ \
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auto* error = TRY(ordinary_create_from_constructor<ClassName>(vm, new_target, &Intrinsics::snake_name##_prototype)); \
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\
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/* 3. If message is not undefined, then */ \
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if (!message.is_undefined()) { \
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/* a. Let msg be ? ToString(message). */ \
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auto msg = TRY(message.to_string(vm)); \
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\
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/* b. Perform CreateNonEnumerableDataPropertyOrThrow(O, "message", msg). */ \
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error->create_non_enumerable_data_property_or_throw(vm.names.message, js_string(vm, move(msg))); \
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} \
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\
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/* 4. Perform ? InstallErrorCause(O, options). */ \
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TRY(error->install_error_cause(options)); \
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\
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/* 5. Return O. */ \
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return error; \
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}
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JS_ENUMERATE_NATIVE_ERRORS
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#undef __JS_ENUMERATE
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}
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