RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-21 15:35:07 +00:00
Code Issues Activity Actions

LibJS: Use Identifier to represent FunctionParameter name

Browse source 
Using identifier instead of string allows to store supplemental
information about whether it can be represented as local variable.
This commit is contained in:
Aliaksandr Kalenik 2023-07-06 17:49:38 +02:00 • committed by Andreas Kling
parent 2f1d6c0b9a
commit 2e81cc4cf7
5 changed files with 50 additions and 31 deletions
Download patch file Download diff file Expand all files Collapse all files

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

@ -94,7 +94,7 @@ ECMAScriptFunctionObject::ECMAScriptFunctionObject(DeprecatedFlyString name, Dep
return false;
if (parameter.default_value)
return false;
if (!parameter.binding.template has<DeprecatedFlyString>())
if (!parameter.binding.template has<NonnullRefPtr<Identifier const>>())
return false;
return true;
});
@ -353,8 +353,8 @@ ThrowCompletionOr<void> ECMAScriptFunctionObject::function_declaration_instantia
has_parameter_expressions = true;
parameter.binding.visit(
[&](DeprecatedFlyString const& name) {
if (parameter_names.set(name) != AK::HashSetResult::InsertedNewEntry)
[&](Identifier const& identifier) {
if (parameter_names.set(identifier.string()) != AK::HashSetResult::InsertedNewEntry)
has_duplicates = true;
},
[&](NonnullRefPtr<BindingPattern const> const& pattern) {
@ -362,8 +362,8 @@ ThrowCompletionOr<void> ECMAScriptFunctionObject::function_declaration_instantia
has_parameter_expressions = true;
// NOTE: Nothing in the callback throws an exception.
MUST(pattern->for_each_bound_name([&](auto& name) {
if (parameter_names.set(name) != AK::HashSetResult::InsertedNewEntry)
MUST(pattern->for_each_bound_identifier([&](auto& identifier) {
if (parameter_names.set(identifier.string()) != AK::HashSetResult::InsertedNewEntry)
has_duplicates = true;
}));
});
@ -478,8 +478,8 @@ ThrowCompletionOr<void> ECMAScriptFunctionObject::function_declaration_instantia
Environment* used_environment = has_duplicates ? nullptr : environment;
if constexpr (IsSame<DeprecatedFlyString const&, decltype(param)>) {
Reference reference = TRY(vm.resolve_binding(param, used_environment));
if constexpr (IsSame<NonnullRefPtr<Identifier const> const&, decltype(param)>) {
Reference reference = TRY(vm.resolve_binding(param->string(), used_environment));
// Here the difference from hasDuplicates is important
if (has_duplicates)
return reference.put_value(vm, argument_value);