| /* |
| * Copyright (C) 2015-2019 Apple Inc. All Rights Reserved. |
| * Copyright (C) 2016 Yusuke Suzuki <utatane.tea@gmail.com>. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "JSModuleLoader.h" |
| |
| #include "BuiltinNames.h" |
| #include "CatchScope.h" |
| #include "CodeProfiling.h" |
| #include "Error.h" |
| #include "Exception.h" |
| #include "JSCInlines.h" |
| #include "JSGlobalObjectFunctions.h" |
| #include "JSInternalPromise.h" |
| #include "JSInternalPromiseDeferred.h" |
| #include "JSMap.h" |
| #include "JSModuleEnvironment.h" |
| #include "JSModuleNamespaceObject.h" |
| #include "JSModuleRecord.h" |
| #include "JSSourceCode.h" |
| #include "JSWebAssembly.h" |
| #include "ModuleAnalyzer.h" |
| #include "Nodes.h" |
| #include "ObjectConstructor.h" |
| #include "Parser.h" |
| #include "ParserError.h" |
| |
| namespace JSC { |
| |
| static EncodedJSValue JSC_HOST_CALL moduleLoaderParseModule(JSGlobalObject*, CallFrame*); |
| static EncodedJSValue JSC_HOST_CALL moduleLoaderRequestedModules(JSGlobalObject*, CallFrame*); |
| static EncodedJSValue JSC_HOST_CALL moduleLoaderEvaluate(JSGlobalObject*, CallFrame*); |
| static EncodedJSValue JSC_HOST_CALL moduleLoaderModuleDeclarationInstantiation(JSGlobalObject*, CallFrame*); |
| static EncodedJSValue JSC_HOST_CALL moduleLoaderResolve(JSGlobalObject*, CallFrame*); |
| static EncodedJSValue JSC_HOST_CALL moduleLoaderResolveSync(JSGlobalObject*, CallFrame*); |
| static EncodedJSValue JSC_HOST_CALL moduleLoaderFetch(JSGlobalObject*, CallFrame*); |
| static EncodedJSValue JSC_HOST_CALL moduleLoaderGetModuleNamespaceObject(JSGlobalObject*, CallFrame*); |
| |
| } |
| |
| #include "JSModuleLoader.lut.h" |
| |
| namespace JSC { |
| |
| STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(JSModuleLoader); |
| |
| const ClassInfo JSModuleLoader::s_info = { "ModuleLoader", &Base::s_info, &moduleLoaderTable, nullptr, CREATE_METHOD_TABLE(JSModuleLoader) }; |
| |
| /* Source for JSModuleLoader.lut.h |
| @begin moduleLoaderTable |
| ensureRegistered JSBuiltin DontEnum|Function 1 |
| forceFulfillPromise JSBuiltin DontEnum|Function 2 |
| fulfillFetch JSBuiltin DontEnum|Function 2 |
| requestFetch JSBuiltin DontEnum|Function 3 |
| requestInstantiate JSBuiltin DontEnum|Function 3 |
| requestSatisfy JSBuiltin DontEnum|Function 3 |
| link JSBuiltin DontEnum|Function 2 |
| moduleDeclarationInstantiation moduleLoaderModuleDeclarationInstantiation DontEnum|Function 2 |
| moduleEvaluation JSBuiltin DontEnum|Function 2 |
| evaluate moduleLoaderEvaluate DontEnum|Function 3 |
| provideFetch JSBuiltin DontEnum|Function 2 |
| loadAndEvaluateModule JSBuiltin DontEnum|Function 3 |
| loadModule JSBuiltin DontEnum|Function 3 |
| linkAndEvaluateModule JSBuiltin DontEnum|Function 2 |
| requestImportModule JSBuiltin DontEnum|Function 3 |
| dependencyKeysIfEvaluated JSBuiltin DontEnum|Function 1 |
| getModuleNamespaceObject moduleLoaderGetModuleNamespaceObject DontEnum|Function 1 |
| parseModule moduleLoaderParseModule DontEnum|Function 2 |
| requestedModules moduleLoaderRequestedModules DontEnum|Function 1 |
| resolve moduleLoaderResolve DontEnum|Function 2 |
| resolveSync moduleLoaderResolveSync DontEnum|Function 2 |
| fetch moduleLoaderFetch DontEnum|Function 3 |
| @end |
| */ |
| |
| JSModuleLoader::JSModuleLoader(VM& vm, Structure* structure) |
| : JSNonFinalObject(vm, structure) |
| { |
| } |
| |
| void JSModuleLoader::finishCreation(JSGlobalObject* globalObject, VM& vm) |
| { |
| auto scope = DECLARE_CATCH_SCOPE(vm); |
| |
| Base::finishCreation(vm); |
| ASSERT(inherits(vm, info())); |
| JSMap* map = JSMap::create(globalObject, vm, globalObject->mapStructure()); |
| scope.releaseAssertNoException(); |
| putDirect(vm, Identifier::fromString(vm, "registry"), map); |
| } |
| |
| // ------------------------------ Functions -------------------------------- |
| |
| static String printableModuleKey(JSGlobalObject* globalObject, JSValue key) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| if (key.isString() || key.isSymbol()) { |
| auto propertyName = key.toPropertyKey(globalObject); |
| scope.assertNoException(); // This is OK since this function is just for debugging purpose. |
| return propertyName.impl(); |
| } |
| return vm.propertyNames->emptyIdentifier.impl(); |
| } |
| |
| JSArray* JSModuleLoader::dependencyKeysIfEvaluated(JSGlobalObject* globalObject, JSValue key) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSObject* function = jsCast<JSObject*>(get(globalObject, vm.propertyNames->builtinNames().dependencyKeysIfEvaluatedPublicName())); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| CallData callData; |
| CallType callType = JSC::getCallData(vm, function, callData); |
| ASSERT(callType != CallType::None); |
| |
| MarkedArgumentBuffer arguments; |
| arguments.append(key); |
| |
| JSValue result = call(globalObject, function, callType, callData, this, arguments); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| |
| return jsDynamicCast<JSArray*>(vm, result); |
| } |
| |
| JSValue JSModuleLoader::provideFetch(JSGlobalObject* globalObject, JSValue key, const SourceCode& sourceCode) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSObject* function = jsCast<JSObject*>(get(globalObject, vm.propertyNames->builtinNames().provideFetchPublicName())); |
| RETURN_IF_EXCEPTION(scope, { }); |
| CallData callData; |
| CallType callType = JSC::getCallData(vm, function, callData); |
| ASSERT(callType != CallType::None); |
| |
| SourceCode source { sourceCode }; |
| MarkedArgumentBuffer arguments; |
| arguments.append(key); |
| arguments.append(JSSourceCode::create(vm, WTFMove(source))); |
| ASSERT(!arguments.hasOverflowed()); |
| |
| RELEASE_AND_RETURN(scope, call(globalObject, function, callType, callData, this, arguments)); |
| } |
| |
| JSInternalPromise* JSModuleLoader::loadAndEvaluateModule(JSGlobalObject* globalObject, JSValue moduleName, JSValue parameters, JSValue scriptFetcher) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSObject* function = jsCast<JSObject*>(get(globalObject, vm.propertyNames->builtinNames().loadAndEvaluateModulePublicName())); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| CallData callData; |
| CallType callType = JSC::getCallData(vm, function, callData); |
| ASSERT(callType != CallType::None); |
| |
| MarkedArgumentBuffer arguments; |
| arguments.append(moduleName); |
| arguments.append(parameters); |
| arguments.append(scriptFetcher); |
| ASSERT(!arguments.hasOverflowed()); |
| |
| JSValue promise = call(globalObject, function, callType, callData, this, arguments); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| return jsCast<JSInternalPromise*>(promise); |
| } |
| |
| JSInternalPromise* JSModuleLoader::loadModule(JSGlobalObject* globalObject, JSValue moduleName, JSValue parameters, JSValue scriptFetcher) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSObject* function = jsCast<JSObject*>(get(globalObject, vm.propertyNames->builtinNames().loadModulePublicName())); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| CallData callData; |
| CallType callType = JSC::getCallData(vm, function, callData); |
| ASSERT(callType != CallType::None); |
| |
| MarkedArgumentBuffer arguments; |
| arguments.append(moduleName); |
| arguments.append(parameters); |
| arguments.append(scriptFetcher); |
| ASSERT(!arguments.hasOverflowed()); |
| |
| JSValue promise = call(globalObject, function, callType, callData, this, arguments); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| return jsCast<JSInternalPromise*>(promise); |
| } |
| |
| JSValue JSModuleLoader::linkAndEvaluateModule(JSGlobalObject* globalObject, JSValue moduleKey, JSValue scriptFetcher) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSObject* function = jsCast<JSObject*>(get(globalObject, vm.propertyNames->builtinNames().linkAndEvaluateModulePublicName())); |
| RETURN_IF_EXCEPTION(scope, { }); |
| CallData callData; |
| CallType callType = JSC::getCallData(vm, function, callData); |
| ASSERT(callType != CallType::None); |
| |
| MarkedArgumentBuffer arguments; |
| arguments.append(moduleKey); |
| arguments.append(scriptFetcher); |
| ASSERT(!arguments.hasOverflowed()); |
| |
| RELEASE_AND_RETURN(scope, call(globalObject, function, callType, callData, this, arguments)); |
| } |
| |
| JSInternalPromise* JSModuleLoader::requestImportModule(JSGlobalObject* globalObject, const Identifier& moduleKey, JSValue parameters, JSValue scriptFetcher) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| auto* function = jsCast<JSObject*>(get(globalObject, vm.propertyNames->builtinNames().requestImportModulePublicName())); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| CallData callData; |
| auto callType = JSC::getCallData(vm, function, callData); |
| ASSERT(callType != CallType::None); |
| |
| MarkedArgumentBuffer arguments; |
| arguments.append(jsString(vm, moduleKey.impl())); |
| arguments.append(parameters); |
| arguments.append(scriptFetcher); |
| ASSERT(!arguments.hasOverflowed()); |
| |
| JSValue promise = call(globalObject, function, callType, callData, this, arguments); |
| RETURN_IF_EXCEPTION(scope, nullptr); |
| return jsCast<JSInternalPromise*>(promise); |
| } |
| |
| JSInternalPromise* JSModuleLoader::importModule(JSGlobalObject* globalObject, JSString* moduleName, JSValue parameters, const SourceOrigin& referrer) |
| { |
| if (Options::dumpModuleLoadingState()) |
| dataLog("Loader [import] ", printableModuleKey(globalObject, moduleName), "\n"); |
| |
| VM& vm = globalObject->vm(); |
| auto throwScope = DECLARE_THROW_SCOPE(vm); |
| |
| if (globalObject->globalObjectMethodTable()->moduleLoaderImportModule) |
| RELEASE_AND_RETURN(throwScope, globalObject->globalObjectMethodTable()->moduleLoaderImportModule(globalObject, this, moduleName, parameters, referrer)); |
| |
| auto* deferred = JSInternalPromiseDeferred::tryCreate(globalObject); |
| RETURN_IF_EXCEPTION(throwScope, nullptr); |
| |
| auto catchScope = DECLARE_CATCH_SCOPE(vm); |
| auto moduleNameString = moduleName->value(globalObject); |
| if (UNLIKELY(catchScope.exception())) { |
| JSValue exception = catchScope.exception()->value(); |
| catchScope.clearException(); |
| deferred->reject(globalObject, exception); |
| catchScope.clearException(); |
| return deferred->promise(); |
| } |
| deferred->reject(globalObject, createError(globalObject, makeString("Could not import the module '", moduleNameString, "'."))); |
| catchScope.clearException(); |
| return deferred->promise(); |
| } |
| |
| Identifier JSModuleLoader::resolveSync(JSGlobalObject* globalObject, JSValue name, JSValue referrer, JSValue scriptFetcher) |
| { |
| if (Options::dumpModuleLoadingState()) |
| dataLog("Loader [resolve] ", printableModuleKey(globalObject, name), "\n"); |
| |
| if (globalObject->globalObjectMethodTable()->moduleLoaderResolve) |
| return globalObject->globalObjectMethodTable()->moduleLoaderResolve(globalObject, this, name, referrer, scriptFetcher); |
| return name.toPropertyKey(globalObject); |
| } |
| |
| JSInternalPromise* JSModuleLoader::resolve(JSGlobalObject* globalObject, JSValue name, JSValue referrer, JSValue scriptFetcher) |
| { |
| VM& vm = globalObject->vm(); |
| auto throwScope = DECLARE_THROW_SCOPE(vm); |
| |
| JSInternalPromiseDeferred* deferred = JSInternalPromiseDeferred::tryCreate(globalObject); |
| RETURN_IF_EXCEPTION(throwScope, nullptr); |
| |
| auto catchScope = DECLARE_CATCH_SCOPE(vm); |
| |
| const Identifier moduleKey = resolveSync(globalObject, name, referrer, scriptFetcher); |
| if (UNLIKELY(catchScope.exception())) { |
| JSValue exception = catchScope.exception(); |
| catchScope.clearException(); |
| auto result = deferred->reject(globalObject, exception); |
| catchScope.clearException(); |
| return result; |
| } |
| auto result = deferred->resolve(globalObject, identifierToJSValue(vm, moduleKey)); |
| catchScope.clearException(); |
| return result; |
| } |
| |
| JSInternalPromise* JSModuleLoader::fetch(JSGlobalObject* globalObject, JSValue key, JSValue parameters, JSValue scriptFetcher) |
| { |
| if (Options::dumpModuleLoadingState()) |
| dataLog("Loader [fetch] ", printableModuleKey(globalObject, key), "\n"); |
| |
| VM& vm = globalObject->vm(); |
| auto throwScope = DECLARE_THROW_SCOPE(vm); |
| |
| if (globalObject->globalObjectMethodTable()->moduleLoaderFetch) |
| RELEASE_AND_RETURN(throwScope, globalObject->globalObjectMethodTable()->moduleLoaderFetch(globalObject, this, key, parameters, scriptFetcher)); |
| |
| JSInternalPromiseDeferred* deferred = JSInternalPromiseDeferred::tryCreate(globalObject); |
| RETURN_IF_EXCEPTION(throwScope, nullptr); |
| |
| auto catchScope = DECLARE_CATCH_SCOPE(vm); |
| |
| String moduleKey = key.toWTFString(globalObject); |
| if (UNLIKELY(catchScope.exception())) { |
| JSValue exception = catchScope.exception()->value(); |
| catchScope.clearException(); |
| deferred->reject(globalObject, exception); |
| catchScope.clearException(); |
| return deferred->promise(); |
| } |
| deferred->reject(globalObject, createError(globalObject, makeString("Could not open the module '", moduleKey, "'."))); |
| catchScope.clearException(); |
| return deferred->promise(); |
| } |
| |
| JSObject* JSModuleLoader::createImportMetaProperties(JSGlobalObject* globalObject, JSValue key, JSModuleRecord* moduleRecord, JSValue scriptFetcher) |
| { |
| if (globalObject->globalObjectMethodTable()->moduleLoaderCreateImportMetaProperties) |
| return globalObject->globalObjectMethodTable()->moduleLoaderCreateImportMetaProperties(globalObject, this, key, moduleRecord, scriptFetcher); |
| return constructEmptyObject(globalObject->vm(), globalObject->nullPrototypeObjectStructure()); |
| } |
| |
| JSValue JSModuleLoader::evaluate(JSGlobalObject* globalObject, JSValue key, JSValue moduleRecordValue, JSValue scriptFetcher) |
| { |
| if (Options::dumpModuleLoadingState()) |
| dataLog("Loader [evaluate] ", printableModuleKey(globalObject, key), "\n"); |
| |
| if (globalObject->globalObjectMethodTable()->moduleLoaderEvaluate) |
| return globalObject->globalObjectMethodTable()->moduleLoaderEvaluate(globalObject, this, key, moduleRecordValue, scriptFetcher); |
| |
| return evaluateNonVirtual(globalObject, key, moduleRecordValue, scriptFetcher); |
| } |
| |
| JSValue JSModuleLoader::evaluateNonVirtual(JSGlobalObject* globalObject, JSValue, JSValue moduleRecordValue, JSValue) |
| { |
| if (auto* moduleRecord = jsDynamicCast<AbstractModuleRecord*>(globalObject->vm(), moduleRecordValue)) |
| return moduleRecord->evaluate(globalObject); |
| return jsUndefined(); |
| } |
| |
| JSModuleNamespaceObject* JSModuleLoader::getModuleNamespaceObject(JSGlobalObject* globalObject, JSValue moduleRecordValue) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| auto* moduleRecord = jsDynamicCast<AbstractModuleRecord*>(vm, moduleRecordValue); |
| if (!moduleRecord) { |
| throwTypeError(globalObject, scope); |
| return nullptr; |
| } |
| |
| RELEASE_AND_RETURN(scope, moduleRecord->getModuleNamespace(globalObject)); |
| } |
| |
| // ------------------------------ Functions -------------------------------- |
| |
| EncodedJSValue JSC_HOST_CALL moduleLoaderParseModule(JSGlobalObject* globalObject, CallFrame* callFrame) |
| { |
| VM& vm = globalObject->vm(); |
| auto throwScope = DECLARE_THROW_SCOPE(vm); |
| |
| JSInternalPromiseDeferred* deferred = JSInternalPromiseDeferred::tryCreate(globalObject); |
| RETURN_IF_EXCEPTION(throwScope, encodedJSValue()); |
| |
| auto catchScope = DECLARE_CATCH_SCOPE(vm); |
| auto reject = [&] (JSValue rejectionReason) { |
| catchScope.clearException(); |
| auto result = deferred->reject(globalObject, rejectionReason); |
| catchScope.clearException(); |
| return JSValue::encode(result); |
| }; |
| |
| const Identifier moduleKey = callFrame->argument(0).toPropertyKey(globalObject); |
| if (UNLIKELY(catchScope.exception())) |
| return reject(catchScope.exception()); |
| |
| JSValue source = callFrame->argument(1); |
| auto* jsSourceCode = jsCast<JSSourceCode*>(source); |
| SourceCode sourceCode = jsSourceCode->sourceCode(); |
| |
| #if ENABLE(WEBASSEMBLY) |
| if (sourceCode.provider()->sourceType() == SourceProviderSourceType::WebAssembly) |
| return JSValue::encode(JSWebAssembly::instantiate(globalObject, deferred, moduleKey, jsSourceCode)); |
| #endif |
| |
| CodeProfiling profile(sourceCode); |
| |
| ParserError error; |
| std::unique_ptr<ModuleProgramNode> moduleProgramNode = parse<ModuleProgramNode>( |
| vm, sourceCode, Identifier(), JSParserBuiltinMode::NotBuiltin, |
| JSParserStrictMode::Strict, JSParserScriptMode::Module, SourceParseMode::ModuleAnalyzeMode, SuperBinding::NotNeeded, error); |
| if (error.isValid()) |
| return reject(error.toErrorObject(globalObject, sourceCode)); |
| ASSERT(moduleProgramNode); |
| |
| ModuleAnalyzer moduleAnalyzer(globalObject, moduleKey, sourceCode, moduleProgramNode->varDeclarations(), moduleProgramNode->lexicalVariables()); |
| if (UNLIKELY(catchScope.exception())) |
| return reject(catchScope.exception()); |
| |
| auto result = deferred->resolve(globalObject, moduleAnalyzer.analyze(*moduleProgramNode)); |
| catchScope.clearException(); |
| return JSValue::encode(result); |
| } |
| |
| EncodedJSValue JSC_HOST_CALL moduleLoaderRequestedModules(JSGlobalObject* globalObject, CallFrame* callFrame) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| auto* moduleRecord = jsDynamicCast<AbstractModuleRecord*>(vm, callFrame->argument(0)); |
| if (!moduleRecord) |
| RELEASE_AND_RETURN(scope, JSValue::encode(constructEmptyArray(globalObject, nullptr))); |
| |
| JSArray* result = constructEmptyArray(globalObject, nullptr, moduleRecord->requestedModules().size()); |
| RETURN_IF_EXCEPTION(scope, encodedJSValue()); |
| size_t i = 0; |
| for (auto& key : moduleRecord->requestedModules()) { |
| result->putDirectIndex(globalObject, i++, jsString(vm, key.get())); |
| RETURN_IF_EXCEPTION(scope, encodedJSValue()); |
| } |
| return JSValue::encode(result); |
| } |
| |
| EncodedJSValue JSC_HOST_CALL moduleLoaderModuleDeclarationInstantiation(JSGlobalObject* globalObject, CallFrame* callFrame) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| auto* moduleRecord = jsDynamicCast<AbstractModuleRecord*>(vm, callFrame->argument(0)); |
| if (!moduleRecord) |
| return JSValue::encode(jsUndefined()); |
| |
| if (Options::dumpModuleLoadingState()) |
| dataLog("Loader [link] ", moduleRecord->moduleKey(), "\n"); |
| |
| moduleRecord->link(globalObject, callFrame->argument(1)); |
| RETURN_IF_EXCEPTION(scope, encodedJSValue()); |
| |
| return JSValue::encode(jsUndefined()); |
| } |
| |
| // ------------------------------ Hook Functions --------------------------- |
| |
| EncodedJSValue JSC_HOST_CALL moduleLoaderResolve(JSGlobalObject* globalObject, CallFrame* callFrame) |
| { |
| VM& vm = globalObject->vm(); |
| // Hook point, Loader.resolve. |
| // https://whatwg.github.io/loader/#browser-resolve |
| // Take the name and resolve it to the unique identifier for the resource location. |
| // For example, take the "jquery" and return the URL for the resource. |
| JSModuleLoader* loader = jsDynamicCast<JSModuleLoader*>(vm, callFrame->thisValue()); |
| if (!loader) |
| return JSValue::encode(jsUndefined()); |
| return JSValue::encode(loader->resolve(globalObject, callFrame->argument(0), callFrame->argument(1), callFrame->argument(2))); |
| } |
| |
| EncodedJSValue JSC_HOST_CALL moduleLoaderResolveSync(JSGlobalObject* globalObject, CallFrame* callFrame) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSModuleLoader* loader = jsDynamicCast<JSModuleLoader*>(vm, callFrame->thisValue()); |
| if (!loader) |
| return JSValue::encode(jsUndefined()); |
| auto result = loader->resolveSync(globalObject, callFrame->argument(0), callFrame->argument(1), callFrame->argument(2)); |
| RETURN_IF_EXCEPTION(scope, encodedJSValue()); |
| return JSValue::encode(identifierToJSValue(vm, result)); |
| } |
| |
| EncodedJSValue JSC_HOST_CALL moduleLoaderFetch(JSGlobalObject* globalObject, CallFrame* callFrame) |
| { |
| VM& vm = globalObject->vm(); |
| // Hook point, Loader.fetch |
| // https://whatwg.github.io/loader/#browser-fetch |
| // Take the key and fetch the resource actually. |
| // For example, JavaScriptCore shell can provide the hook fetching the resource |
| // from the local file system. |
| JSModuleLoader* loader = jsDynamicCast<JSModuleLoader*>(vm, callFrame->thisValue()); |
| if (!loader) |
| return JSValue::encode(jsUndefined()); |
| return JSValue::encode(loader->fetch(globalObject, callFrame->argument(0), callFrame->argument(1), callFrame->argument(2))); |
| } |
| |
| EncodedJSValue JSC_HOST_CALL moduleLoaderGetModuleNamespaceObject(JSGlobalObject* globalObject, CallFrame* callFrame) |
| { |
| VM& vm = globalObject->vm(); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| auto* loader = jsDynamicCast<JSModuleLoader*>(vm, callFrame->thisValue()); |
| if (!loader) |
| return JSValue::encode(jsUndefined()); |
| auto* moduleNamespaceObject = loader->getModuleNamespaceObject(globalObject, callFrame->argument(0)); |
| RETURN_IF_EXCEPTION(scope, encodedJSValue()); |
| return JSValue::encode(moduleNamespaceObject); |
| } |
| |
| // ------------------- Additional Hook Functions --------------------------- |
| |
| EncodedJSValue JSC_HOST_CALL moduleLoaderEvaluate(JSGlobalObject* globalObject, CallFrame* callFrame) |
| { |
| // To instrument and retrieve the errors raised from the module execution, |
| // we inserted the hook point here. |
| |
| VM& vm = globalObject->vm(); |
| JSModuleLoader* loader = jsDynamicCast<JSModuleLoader*>(vm, callFrame->thisValue()); |
| if (!loader) |
| return JSValue::encode(jsUndefined()); |
| return JSValue::encode(loader->evaluate(globalObject, callFrame->argument(0), callFrame->argument(1), callFrame->argument(2))); |
| } |
| |
| } // namespace JSC |
