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LibJS: Bring the explicit resource management implementation up to date

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While we don't yet have a working `using` implementation with our byte
code, we can still keep our DisposableStack implementation up to date.
The changes brought in here are all editorial, and set us up to start
an AsyncDisposableStack implementation.
This commit is contained in:
Timothy Flynn 2025-01-16 16:51:26 -05:00 • committed by Andreas Kling
parent f82b1c5a2d
commit 5ea0aa5f08
Notes: github-actions[bot] 2025-01-17 19:47:35 +00:00
12 changed files with 375 additions and 258 deletions
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9
Libraries/LibJS/SourceTextModule.cpp
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@ -671,6 +671,7 @@ ThrowCompletionOr<ResolvedBinding> SourceTextModule::resolve_export(VM& vm, Depr
}
// 16.2.1.6.5 ExecuteModule ( [ capability ] ), https://tc39.es/ecma262/#sec-source-text-module-record-execute-module
// 9.1.1.1.2 ExecuteModule ( [ capability ] ), https://tc39.es/proposal-explicit-resource-management/#sec-source-text-module-record-execute-module
ThrowCompletionOr<void> SourceTextModule::execute_module(VM& vm, GC::Ptr<PromiseCapability> capability)
{
dbgln_if(JS_MODULE_DEBUG, "[JS MODULE] SourceTextModule::execute_module({}, PromiseCapability @ {})", filename(), capability.ptr());
@ -708,6 +709,7 @@ ThrowCompletionOr<void> SourceTextModule::execute_module(VM& vm, GC::Ptr<Promise
if (!m_has_top_level_await) {
// a. Assert: capability is not present.
VERIFY(capability == nullptr);
// b. Push moduleContext onto the execution context stack; moduleContext is now the running execution context.
TRY(vm.push_execution_context(*module_context, {}));
@ -730,11 +732,10 @@ ThrowCompletionOr<void> SourceTextModule::execute_module(VM& vm, GC::Ptr<Promise
}
// d. Let env be moduleContext's LexicalEnvironment.
auto env = module_context->lexical_environment;
VERIFY(is<DeclarativeEnvironment>(*env));
auto& env = verify_cast<DeclarativeEnvironment>(*module_context->lexical_environment);
// e. Set result to DisposeResources(env, result).
result = dispose_resources(vm, static_cast<DeclarativeEnvironment*>(env.ptr()), result);
// e. Set result to Completion(DisposeResources(env.[[DisposeCapability]], result)).
result = dispose_resources(vm, env.dispose_capability(), result);
// f. Suspend moduleContext and remove it from the execution context stack.
vm.pop_execution_context();