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LibJS/Bytecode: Add codegen for ImportCall

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Also moved most of the AST ImportCall::execute() into a helper so we can
share the code.
This commit is contained in:
Andreas Kling 2023-06-24 15:22:16 +02:00
parent eb9298b54e
commit 8a5e71256d
Notes: sideshowbarker 2024-07-17 06:51:40 +09:00
8 changed files with 160 additions and 89 deletions
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88
Userland/Libraries/LibJS/AST.cpp
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@ -3485,11 +3485,6 @@ Completion ImportCall::execute(Interpreter& interpreter) const
{
InterpreterNodeScope node_scope { interpreter, *this };
auto& vm = interpreter.vm();
auto& realm = *vm.current_realm();
// 2.1.1.1 EvaluateImportCall ( specifierExpression [ , optionsExpression ] ), https://tc39.es/proposal-import-assertions/#sec-evaluate-import-call
// 1. Let referencingScriptOrModule be GetActiveScriptOrModule().
auto referencing_script_or_module = vm.get_active_script_or_module();
// 2. Let specifierRef be the result of evaluating specifierExpression.
// 3. Let specifier be ? GetValue(specifierRef).
@ -3506,88 +3501,7 @@ Completion ImportCall::execute(Interpreter& interpreter) const
// a. Let options be undefined.
// Note: options_value is undefined by default.
// 6. Let promiseCapability be ! NewPromiseCapability(%Promise%).
auto promise_capability = MUST(new_promise_capability(vm, realm.intrinsics().promise_constructor()));
// 7. Let specifierString be Completion(ToString(specifier)).
// 8. IfAbruptRejectPromise(specifierString, promiseCapability).
auto specifier_string = TRY_OR_REJECT_WITH_VALUE(vm, promise_capability, specifier->to_deprecated_string(vm));
// 9. Let assertions be a new empty List.
Vector<ModuleRequest::Assertion> assertions;
// 10. If options is not undefined, then
if (!options_value.is_undefined()) {
// a. If Type(options) is not Object,
if (!options_value.is_object()) {
auto error = TypeError::create(realm, TRY_OR_THROW_OOM(vm, String::formatted(ErrorType::NotAnObject.message(), "ImportOptions")));
// i. Perform ! Call(promiseCapability.[[Reject]], undefined, « a newly created TypeError object »).
MUST(call(vm, *promise_capability->reject(), js_undefined(), error));
// ii. Return promiseCapability.[[Promise]].
return Value { promise_capability->promise() };
}
// b. Let assertionsObj be Get(options, "assert").
// c. IfAbruptRejectPromise(assertionsObj, promiseCapability).
auto assertion_object = TRY_OR_REJECT_WITH_VALUE(vm, promise_capability, options_value.get(vm, vm.names.assert));
// d. If assertionsObj is not undefined,
if (!assertion_object.is_undefined()) {
// i. If Type(assertionsObj) is not Object,
if (!assertion_object.is_object()) {
auto error = TypeError::create(realm, TRY_OR_THROW_OOM(vm, String::formatted(ErrorType::NotAnObject.message(), "ImportOptionsAssertions")));
// 1. Perform ! Call(promiseCapability.[[Reject]], undefined, « a newly created TypeError object »).
MUST(call(vm, *promise_capability->reject(), js_undefined(), error));
// 2. Return promiseCapability.[[Promise]].
return Value { promise_capability->promise() };
}
// ii. Let keys be EnumerableOwnPropertyNames(assertionsObj, key).
// iii. IfAbruptRejectPromise(keys, promiseCapability).
auto keys = TRY_OR_REJECT_WITH_VALUE(vm, promise_capability, assertion_object.as_object().enumerable_own_property_names(Object::PropertyKind::Key));
// iv. Let supportedAssertions be ! HostGetSupportedImportAssertions().
auto supported_assertions = vm.host_get_supported_import_assertions();
// v. For each String key of keys,
for (auto const& key : keys) {
auto property_key = MUST(key.to_property_key(vm));
// 1. Let value be Get(assertionsObj, key).
// 2. IfAbruptRejectPromise(value, promiseCapability).
auto value = TRY_OR_REJECT_WITH_VALUE(vm, promise_capability, assertion_object.get(vm, property_key));
// 3. If Type(value) is not String, then
if (!value.is_string()) {
auto error = TypeError::create(realm, TRY_OR_THROW_OOM(vm, String::formatted(ErrorType::NotAString.message(), "Import Assertion option value")));
// a. Perform ! Call(promiseCapability.[[Reject]], undefined, « a newly created TypeError object »).
MUST(call(vm, *promise_capability->reject(), js_undefined(), error));
// b. Return promiseCapability.[[Promise]].
return Value { promise_capability->promise() };
}
// 4. If supportedAssertions contains key, then
if (supported_assertions.contains_slow(property_key.to_string())) {
// a. Append { [[Key]]: key, [[Value]]: value } to assertions.
assertions.empend(property_key.to_string(), TRY(value.as_string().deprecated_string()));
}
}
}
// e. Sort assertions by the code point order of the [[Key]] of each element. NOTE: This sorting is observable only in that hosts are prohibited from distinguishing among assertions by the order they occur in.
// Note: This is done when constructing the ModuleRequest.
}
// 11. Let moduleRequest be a new ModuleRequest Record { [[Specifier]]: specifierString, [[Assertions]]: assertions }.
ModuleRequest request { specifier_string, assertions };
// 12. Perform HostImportModuleDynamically(referencingScriptOrModule, moduleRequest, promiseCapability).
MUST_OR_THROW_OOM(interpreter.vm().host_import_module_dynamically(referencing_script_or_module, move(request), promise_capability));
// 13. Return promiseCapability.[[Promise]].
return Value { promise_capability->promise() };
return perform_import_call(vm, *specifier, options_value);
}
// 13.2.3.1 Runtime Semantics: Evaluation, https://tc39.es/ecma262/#sec-literals-runtime-semantics-evaluation