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LibJS: Add spec comments to FunctionPrototype

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This commit is contained in:
Linus Groh 2023-01-27 22:00:31 +00:00
parent 6d6ea1fffe
commit 0f4bbfdfb7
1 changed files with 4 additions and 2 deletions
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6
Userland/Libraries/LibJS/Runtime/FunctionPrototype.cpp
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2020-2022, Linus Groh <linusg@serenityos.org> * Copyright (c) 2020-2023, Linus Groh <linusg@serenityos.org>
* *
* SPDX-License-Identifier: BSD-2-Clause * SPDX-License-Identifier: BSD-2-Clause
*/ */
@ -145,7 +145,7 @@ JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::to_string)
// 1. Let func be the this value. // 1. Let func be the this value.
auto function_value = vm.this_value(); auto function_value = vm.this_value();
// If func is not a function, let's bail out early. The order of this step is not observable. // OPTIMIZATION: If func is not a function, bail out early. The order of this step is not observable.
if (!function_value.is_function()) { if (!function_value.is_function()) {
// 5. Throw a TypeError exception. // 5. Throw a TypeError exception.
return vm.throw_completion<TypeError>(ErrorType::NotAnObjectOfType, "Function"); return vm.throw_completion<TypeError>(ErrorType::NotAnObjectOfType, "Function");
@ -175,6 +175,8 @@ JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::to_string)
// 20.2.3.6 Function.prototype [ @@hasInstance ] ( V ), https://tc39.es/ecma262/#sec-function.prototype-@@hasinstance // 20.2.3.6 Function.prototype [ @@hasInstance ] ( V ), https://tc39.es/ecma262/#sec-function.prototype-@@hasinstance
JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::symbol_has_instance) JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::symbol_has_instance)
{ {
// 1. Let F be the this value.
// 2. Return ? OrdinaryHasInstance(F, V).
return TRY(ordinary_has_instance(vm, vm.argument(0), vm.this_value())); return TRY(ordinary_has_instance(vm, vm.argument(0), vm.this_value()));
} }