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LibJS: Convert has_binding() to ThrowCompletionOr

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Also add spec step comments to it while we're here.
This commit is contained in:
Linus Groh 2021-10-09 17:07:32 +01:00
parent 617d3cd3d3
commit fbb176c926
11 changed files with 50 additions and 29 deletions
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23
Userland/Libraries/LibJS/Runtime/GlobalEnvironment.cpp
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@ -39,17 +39,22 @@ ThrowCompletionOr<Value> GlobalEnvironment::get_this_binding(GlobalObject&) cons
}
// 9.1.1.4.1 HasBinding ( N ), https://tc39.es/ecma262/#sec-global-environment-records-hasbinding-n
bool GlobalEnvironment::has_binding(FlyString const& name, Optional<size_t>*) const
ThrowCompletionOr<bool> GlobalEnvironment::has_binding(FlyString const& name, Optional<size_t>*) const
{
if (m_declarative_record->has_binding(name))
// 1. Let DclRec be envRec.[[DeclarativeRecord]].
// 2. If DclRec.HasBinding(N) is true, return true.
if (MUST(m_declarative_record->has_binding(name)))
return true;
// 3. Let ObjRec be envRec.[[ObjectRecord]].
// 4. Return ? ObjRec.HasBinding(N).
return m_object_record->has_binding(name);
}
// 9.1.1.4.2 CreateMutableBinding ( N, D ), https://tc39.es/ecma262/#sec-global-environment-records-createmutablebinding-n-d
void GlobalEnvironment::create_mutable_binding(GlobalObject& global_object, FlyString const& name, bool can_be_deleted)
{
if (m_declarative_record->has_binding(name)) {
if (MUST(m_declarative_record->has_binding(name))) {
global_object.vm().throw_exception<TypeError>(global_object, ErrorType::FixmeAddAnErrorString);
return;
}
@ -59,7 +64,7 @@ void GlobalEnvironment::create_mutable_binding(GlobalObject& global_object, FlyS
// 9.1.1.4.3 CreateImmutableBinding ( N, S ), https://tc39.es/ecma262/#sec-global-environment-records-createimmutablebinding-n-s
void GlobalEnvironment::create_immutable_binding(GlobalObject& global_object, FlyString const& name, bool strict)
{
if (m_declarative_record->has_binding(name)) {
if (MUST(m_declarative_record->has_binding(name))) {
global_object.vm().throw_exception<TypeError>(global_object, ErrorType::FixmeAddAnErrorString);
return;
}
@ -69,7 +74,7 @@ void GlobalEnvironment::create_immutable_binding(GlobalObject& global_object, Fl
// 9.1.1.4.4 InitializeBinding ( N, V ), https://tc39.es/ecma262/#sec-global-environment-records-initializebinding-n-v
void GlobalEnvironment::initialize_binding(GlobalObject& global_object, FlyString const& name, Value value)
{
if (m_declarative_record->has_binding(name)) {
if (MUST(m_declarative_record->has_binding(name))) {
m_declarative_record->initialize_binding(global_object, name, value);
return;
}
@ -79,7 +84,7 @@ void GlobalEnvironment::initialize_binding(GlobalObject& global_object, FlyStrin
// 9.1.1.4.5 SetMutableBinding ( N, V, S ), https://tc39.es/ecma262/#sec-global-environment-records-setmutablebinding-n-v-s
void GlobalEnvironment::set_mutable_binding(GlobalObject& global_object, FlyString const& name, Value value, bool strict)
{
if (m_declarative_record->has_binding(name)) {
if (MUST(m_declarative_record->has_binding(name))) {
m_declarative_record->set_mutable_binding(global_object, name, value, strict);
return;
}
@ -90,7 +95,7 @@ void GlobalEnvironment::set_mutable_binding(GlobalObject& global_object, FlyStri
// 9.1.1.4.6 GetBindingValue ( N, S ), https://tc39.es/ecma262/#sec-global-environment-records-getbindingvalue-n-s
Value GlobalEnvironment::get_binding_value(GlobalObject& global_object, FlyString const& name, bool strict)
{
if (m_declarative_record->has_binding(name))
if (MUST(m_declarative_record->has_binding(name)))
return m_declarative_record->get_binding_value(global_object, name, strict);
return m_object_record->get_binding_value(global_object, name, strict);
}
@ -98,7 +103,7 @@ Value GlobalEnvironment::get_binding_value(GlobalObject& global_object, FlyStrin
// 9.1.1.4.7 DeleteBinding ( N ), https://tc39.es/ecma262/#sec-global-environment-records-deletebinding-n
bool GlobalEnvironment::delete_binding(GlobalObject& global_object, FlyString const& name)
{
if (m_declarative_record->has_binding(name))
if (MUST(m_declarative_record->has_binding(name)))
return m_declarative_record->delete_binding(global_object, name);
bool existing_prop = TRY_OR_DISCARD(m_object_record->binding_object().has_own_property(name));
@ -121,7 +126,7 @@ bool GlobalEnvironment::has_var_declaration(FlyString const& name) const
// 9.1.1.4.13 HasLexicalDeclaration ( N ), https://tc39.es/ecma262/#sec-haslexicaldeclaration
bool GlobalEnvironment::has_lexical_declaration(FlyString const& name) const
{
return m_declarative_record->has_binding(name);
return MUST(m_declarative_record->has_binding(name));
}
// 9.1.1.4.14 HasRestrictedGlobalProperty ( N ), https://tc39.es/ecma262/#sec-hasrestrictedglobalproperty