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LibJS: Convert create_immutable_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 19:00:06 +01:00
parent 4baf3a91e8
commit 2691c65639
10 changed files with 29 additions and 22 deletions
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13
Userland/Libraries/LibJS/AST.cpp
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@ -192,7 +192,7 @@ Value FunctionExpression::instantiate_ordinary_function_expression(Interpreter&
if (has_own_name) {
VERIFY(scope);
scope = new_declarative_environment(*scope);
scope->create_immutable_binding(global_object, name(), false);
MUST(scope->create_immutable_binding(global_object, name(), false));
}
auto closure = ECMAScriptFunctionObject::create(global_object, used_name, body(), parameters(), function_length(), scope, kind(), is_strict_mode(), might_need_arguments_object(), contains_direct_call_to_eval(), is_arrow_function());
@ -543,7 +543,7 @@ Value ForStatement::execute(Interpreter& interpreter, GlobalObject& global_objec
auto& declaration = static_cast<VariableDeclaration const&>(*m_init);
declaration.for_each_bound_name([&](auto const& name) {
if (declaration.declaration_kind() == DeclarationKind::Const) {
loop_environment->create_immutable_binding(global_object, name, true);
MUST(loop_environment->create_immutable_binding(global_object, name, true));
} else {
MUST(loop_environment->create_mutable_binding(global_object, name, false));
let_declarations.append(name);
@ -683,7 +683,7 @@ struct ForInOfHeadState {
auto& for_declaration = static_cast<VariableDeclaration const&>(*expression_lhs);
for_declaration.for_each_bound_name([&](auto const& name) {
if (for_declaration.declaration_kind() == DeclarationKind::Const)
iteration_environment->create_immutable_binding(global_object, name, false);
MUST(iteration_environment->create_immutable_binding(global_object, name, false));
else
MUST(iteration_environment->create_mutable_binding(global_object, name, true));
});
@ -1210,7 +1210,7 @@ ThrowCompletionOr<Value> ClassExpression::class_definition_evaluation(Interprete
VERIFY(environment);
auto* class_scope = new_declarative_environment(*environment);
if (!binding_name.is_null())
class_scope->create_immutable_binding(global_object, binding_name, true);
MUST(class_scope->create_immutable_binding(global_object, binding_name, true));
ArmedScopeGuard restore_environment = [&] {
vm.running_execution_context().lexical_environment = environment;
@ -3188,7 +3188,7 @@ void ScopeNode::block_declaration_instantiation(GlobalObject& global_object, Env
auto is_constant_declaration = declaration.is_constant_declaration();
declaration.for_each_bound_name([&](auto const& name) {
if (is_constant_declaration) {
environment->create_immutable_binding(global_object, name, true);
MUST(environment->create_immutable_binding(global_object, name, true));
} else {
if (!MUST(environment->has_binding(name)))
MUST(environment->create_mutable_binding(global_object, name, false));
@ -3327,10 +3327,9 @@ ThrowCompletionOr<void> Program::global_declaration_instantiation(Interpreter& i
for_each_lexically_scoped_declaration([&](Declaration const& declaration) {
declaration.for_each_bound_name([&](auto const& name) {
if (declaration.is_constant_declaration())
global_environment.create_immutable_binding(global_object, name, true);
(void)global_environment.create_immutable_binding(global_object, name, true);
else
(void)global_environment.create_mutable_binding(global_object, name, false);
if (interpreter.exception())
return IterationDecision::Break;
return IterationDecision::Continue;