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LibJS: Use GetShadowRealmContext for PerformShadowRealmEval

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Shannon Booth 2024-11-03 21:04:57 +13:00 • committed by Andrew Kaster
parent 6a55865bf6
commit 3cb62265ab
Notes: github-actions[bot] 2024-11-05 00:16:30 +00:00
1 changed files with 25 additions and 43 deletions
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68
Userland/Libraries/LibJS/Runtime/ShadowRealm.cpp
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@ -124,57 +124,33 @@ ThrowCompletionOr<Value> perform_shadow_realm_eval(VM& vm, StringView source_tex
auto strict_eval = program->is_strict_mode();
// 4. Let runningContext be the running execution context.
// NOTE: This would be unused due to step 11 and is omitted for that reason.
// 5. If runningContext is not already suspended, suspend runningContext.
// NOTE: This would be unused due to step 9 and is omitted for that reason.
// 5. Let lexEnv be NewDeclarativeEnvironment(evalRealm.[[GlobalEnv]]).
Environment* lexical_environment = new_declarative_environment(eval_realm.global_environment()).ptr();
// 6. Let evalContext be GetShadowRealmContext(evalRealm, strictEval).
auto eval_context = get_shadow_realm_context(eval_realm, strict_eval);
// 6. Let varEnv be evalRealm.[[GlobalEnv]].
Environment* variable_environment = &eval_realm.global_environment();
// 7. Let lexEnv be evalContext's LexicalEnvironment.
auto lexical_environment = eval_context->lexical_environment;
// 7. If strictEval is true, set varEnv to lexEnv.
if (strict_eval)
variable_environment = lexical_environment;
// 8. Let varEnv be evalContext's VariableEnvironment.
auto variable_environment = eval_context->variable_environment;
// 8. If runningContext is not already suspended, suspend runningContext.
// NOTE: We don't support this concept yet.
// 9. Let evalContext be a new ECMAScript code execution context.
auto eval_context = ExecutionContext::create();
// 10. Set evalContext's Function to null.
eval_context->function = nullptr;
// 11. Set evalContext's Realm to evalRealm.
eval_context->realm = &eval_realm;
// 12. Set evalContext's ScriptOrModule to null.
// Note: This is already the default value.
// 13. Set evalContext's VariableEnvironment to varEnv.
eval_context->variable_environment = variable_environment;
// 14. Set evalContext's LexicalEnvironment to lexEnv.
eval_context->lexical_environment = lexical_environment;
// Non-standard
eval_context->is_strict_mode = strict_eval;
// 15. Push evalContext onto the execution context stack; evalContext is now the running execution context.
// 9. Push evalContext onto the execution context stack; evalContext is now the running execution context.
TRY(vm.push_execution_context(*eval_context, {}));
// 16. Let result be Completion(EvalDeclarationInstantiation(body, varEnv, lexEnv, null, strictEval)).
// 10. Let result be Completion(EvalDeclarationInstantiation(body, varEnv, lexEnv, null, strictEval)).
auto eval_result = eval_declaration_instantiation(vm, program, variable_environment, lexical_environment, nullptr, strict_eval);
Completion result;
// 17. If result.[[Type]] is normal, then
// 11. If result.[[Type]] is normal, then
if (!eval_result.is_throw_completion()) {
// a. Set result to the result of evaluating body.
auto maybe_executable = Bytecode::compile(vm, program, FunctionKind::Normal, "ShadowRealmEval"sv);
if (maybe_executable.is_error())
if (maybe_executable.is_error()) {
result = maybe_executable.release_error();
else {
} else {
auto executable = maybe_executable.release_value();
auto result_and_return_register = vm.bytecode_interpreter().run_executable(*executable, {});
@ -187,24 +163,27 @@ ThrowCompletionOr<Value> perform_shadow_realm_eval(VM& vm, StringView source_tex
}
}
// 18. If result.[[Type]] is normal and result.[[Value]] is empty, then
// 12. If result.[[Type]] is normal and result.[[Value]] is empty, then
if (result.type() == Completion::Type::Normal && !result.value().has_value()) {
// a. Set result to NormalCompletion(undefined).
result = normal_completion(js_undefined());
}
// 19. Suspend evalContext and remove it from the execution context stack.
// 13. Suspend evalContext and remove it from the execution context stack.
// NOTE: We don't support this concept yet.
vm.pop_execution_context();
// 20. Resume the context that is now on the top of the execution context stack as the running execution context.
// 14. Resume the context that is now on the top of the execution context stack as the running execution context.
// NOTE: We don't support this concept yet.
// 21. If result.[[Type]] is not normal, throw a TypeError exception.
if (result.type() != Completion::Type::Normal)
// 15. If result.[[Type]] is not normal, then
if (result.type() != Completion::Type::Normal) {
// a. Let copiedError be CreateTypeErrorCopy(callerRealm, result.[[Value]]).
// b. Return ThrowCompletion(copiedError).
return vm.throw_completion<TypeError>(ErrorType::ShadowRealmEvaluateAbruptCompletion);
}
// 22. Return ? GetWrappedValue(callerRealm, result.[[Value]]).
// 16. Return ? GetWrappedValue(callerRealm, result.[[Value]]).
return get_wrapped_value(vm, caller_realm, *result.value());
// NOTE: Also see "Editor's Note" in the spec regarding the TypeError above.
@ -342,6 +321,9 @@ NonnullOwnPtr<ExecutionContext> get_shadow_realm_context(Realm& shadow_realm, bo
// 10. Set context's PrivateEnvironment to null.
context->private_environment = nullptr;
// Non-standard
context->is_strict_mode = strict_eval;
// 11. Return context.
return context;
}