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/*
* Copyright (C) 2015-2017 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 "ModuleAnalyzer.h"
#include "Nodes.h"
#include "ObjectConstructor.h"
#include "Parser.h"
#include "ParserError.h"
#include "WebAssemblyPrototype.h"
namespace JSC {
static EncodedJSValue JSC_HOST_CALL moduleLoaderParseModule(ExecState*);
static EncodedJSValue JSC_HOST_CALL moduleLoaderRequestedModules(ExecState*);
static EncodedJSValue JSC_HOST_CALL moduleLoaderEvaluate(ExecState*);
static EncodedJSValue JSC_HOST_CALL moduleLoaderModuleDeclarationInstantiation(ExecState*);
static EncodedJSValue JSC_HOST_CALL moduleLoaderResolve(ExecState*);
static EncodedJSValue JSC_HOST_CALL moduleLoaderResolveSync(ExecState*);
static EncodedJSValue JSC_HOST_CALL moduleLoaderFetch(ExecState*);
static EncodedJSValue JSC_HOST_CALL moduleLoaderGetModuleNamespaceObject(ExecState*);
}
#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
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(ExecState* exec, VM& vm, JSGlobalObject* globalObject)
{
auto scope = DECLARE_CATCH_SCOPE(vm);
Base::finishCreation(vm);
ASSERT(inherits(vm, info()));
JSMap* map = JSMap::create(exec, vm, globalObject->mapStructure());
scope.releaseAssertNoException();
putDirect(vm, Identifier::fromString(&vm, "registry"), map);
}
// ------------------------------ Functions --------------------------------
static String printableModuleKey(ExecState* exec, JSValue key)
{
VM& vm = exec->vm();
if (key.isString() || key.isSymbol())
return key.toPropertyKey(exec).impl();
return vm.propertyNames->emptyIdentifier.impl();
}
JSValue JSModuleLoader::provideFetch(ExecState* exec, JSValue key, const SourceCode& sourceCode)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* function = jsCast<JSObject*>(get(exec, vm.propertyNames->builtinNames().provideFetchPublicName()));
RETURN_IF_EXCEPTION(scope, { });
CallData callData;
CallType callType = JSC::getCallData(function, callData);
ASSERT(callType != CallType::None);
SourceCode source { sourceCode };
MarkedArgumentBuffer arguments;
arguments.append(key);
arguments.append(JSSourceCode::create(vm, WTFMove(source)));
ASSERT(!arguments.hasOverflowed());
scope.release();
return call(exec, function, callType, callData, this, arguments);
}
JSInternalPromise* JSModuleLoader::loadAndEvaluateModule(ExecState* exec, JSValue moduleName, JSValue parameters, JSValue scriptFetcher)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* function = jsCast<JSObject*>(get(exec, vm.propertyNames->builtinNames().loadAndEvaluateModulePublicName()));
RETURN_IF_EXCEPTION(scope, nullptr);
CallData callData;
CallType callType = JSC::getCallData(function, callData);
ASSERT(callType != CallType::None);
MarkedArgumentBuffer arguments;
arguments.append(moduleName);
arguments.append(parameters);
arguments.append(scriptFetcher);
ASSERT(!arguments.hasOverflowed());
scope.release();
return jsCast<JSInternalPromise*>(call(exec, function, callType, callData, this, arguments));
}
JSInternalPromise* JSModuleLoader::loadModule(ExecState* exec, JSValue moduleName, JSValue parameters, JSValue scriptFetcher)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* function = jsCast<JSObject*>(get(exec, vm.propertyNames->builtinNames().loadModulePublicName()));
RETURN_IF_EXCEPTION(scope, nullptr);
CallData callData;
CallType callType = JSC::getCallData(function, callData);
ASSERT(callType != CallType::None);
MarkedArgumentBuffer arguments;
arguments.append(moduleName);
arguments.append(parameters);
arguments.append(scriptFetcher);
ASSERT(!arguments.hasOverflowed());
scope.release();
return jsCast<JSInternalPromise*>(call(exec, function, callType, callData, this, arguments));
}
JSValue JSModuleLoader::linkAndEvaluateModule(ExecState* exec, JSValue moduleKey, JSValue scriptFetcher)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSObject* function = jsCast<JSObject*>(get(exec, vm.propertyNames->builtinNames().linkAndEvaluateModulePublicName()));
RETURN_IF_EXCEPTION(scope, { });
CallData callData;
CallType callType = JSC::getCallData(function, callData);
ASSERT(callType != CallType::None);
MarkedArgumentBuffer arguments;
arguments.append(moduleKey);
arguments.append(scriptFetcher);
ASSERT(!arguments.hasOverflowed());
scope.release();
return call(exec, function, callType, callData, this, arguments);
}
JSInternalPromise* JSModuleLoader::requestImportModule(ExecState* exec, const Identifier& moduleKey, JSValue parameters, JSValue scriptFetcher)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
auto* function = jsCast<JSObject*>(get(exec, vm.propertyNames->builtinNames().requestImportModulePublicName()));
RETURN_IF_EXCEPTION(scope, nullptr);
CallData callData;
auto callType = JSC::getCallData(function, callData);
ASSERT(callType != CallType::None);
MarkedArgumentBuffer arguments;
arguments.append(jsString(exec, moduleKey.impl()));
arguments.append(parameters);
arguments.append(scriptFetcher);
ASSERT(!arguments.hasOverflowed());
scope.release();
return jsCast<JSInternalPromise*>(call(exec, function, callType, callData, this, arguments));
}
JSInternalPromise* JSModuleLoader::importModule(ExecState* exec, JSString* moduleName, JSValue parameters, const SourceOrigin& referrer)
{
if (Options::dumpModuleLoadingState())
dataLog("Loader [import] ", printableModuleKey(exec, moduleName), "\n");
auto* globalObject = exec->lexicalGlobalObject();
VM& vm = globalObject->vm();
auto scope = DECLARE_CATCH_SCOPE(vm);
if (globalObject->globalObjectMethodTable()->moduleLoaderImportModule)
return globalObject->globalObjectMethodTable()->moduleLoaderImportModule(globalObject, exec, this, moduleName, parameters, referrer);
auto* deferred = JSInternalPromiseDeferred::create(exec, globalObject);
auto moduleNameString = moduleName->value(exec);
if (UNLIKELY(scope.exception())) {
JSValue exception = scope.exception()->value();
scope.clearException();
deferred->reject(exec, exception);
return deferred->promise();
}
deferred->reject(exec, createError(exec, makeString("Could not import the module '", moduleNameString, "'.")));
return deferred->promise();
}
Identifier JSModuleLoader::resolveSync(ExecState* exec, JSValue name, JSValue referrer, JSValue scriptFetcher)
{
if (Options::dumpModuleLoadingState())
dataLog("Loader [resolve] ", printableModuleKey(exec, name), "\n");
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
if (globalObject->globalObjectMethodTable()->moduleLoaderResolve)
return globalObject->globalObjectMethodTable()->moduleLoaderResolve(globalObject, exec, this, name, referrer, scriptFetcher);
return name.toPropertyKey(exec);
}
JSInternalPromise* JSModuleLoader::resolve(ExecState* exec, JSValue name, JSValue referrer, JSValue scriptFetcher)
{
VM& vm = exec->vm();
auto scope = DECLARE_CATCH_SCOPE(vm);
JSInternalPromiseDeferred* deferred = JSInternalPromiseDeferred::create(exec, exec->lexicalGlobalObject());
scope.releaseAssertNoException();
const Identifier moduleKey = resolveSync(exec, name, referrer, scriptFetcher);
if (UNLIKELY(scope.exception())) {
JSValue exception = scope.exception();
scope.clearException();
return deferred->reject(exec, exception);
}
auto result = deferred->resolve(exec, identifierToJSValue(vm, moduleKey));
scope.releaseAssertNoException();
return result;
}
JSInternalPromise* JSModuleLoader::fetch(ExecState* exec, JSValue key, JSValue parameters, JSValue scriptFetcher)
{
if (Options::dumpModuleLoadingState())
dataLog("Loader [fetch] ", printableModuleKey(exec, key), "\n");
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
VM& vm = globalObject->vm();
auto scope = DECLARE_CATCH_SCOPE(vm);
if (globalObject->globalObjectMethodTable()->moduleLoaderFetch)
return globalObject->globalObjectMethodTable()->moduleLoaderFetch(globalObject, exec, this, key, parameters, scriptFetcher);
JSInternalPromiseDeferred* deferred = JSInternalPromiseDeferred::create(exec, globalObject);
String moduleKey = key.toWTFString(exec);
if (UNLIKELY(scope.exception())) {
JSValue exception = scope.exception()->value();
scope.clearException();
deferred->reject(exec, exception);
return deferred->promise();
}
deferred->reject(exec, createError(exec, makeString("Could not open the module '", moduleKey, "'.")));
return deferred->promise();
}
JSObject* JSModuleLoader::createImportMetaProperties(ExecState* exec, JSValue key, JSModuleRecord* moduleRecord, JSValue scriptFetcher)
{
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
if (globalObject->globalObjectMethodTable()->moduleLoaderCreateImportMetaProperties)
return globalObject->globalObjectMethodTable()->moduleLoaderCreateImportMetaProperties(globalObject, exec, this, key, moduleRecord, scriptFetcher);
return constructEmptyObject(exec, exec->lexicalGlobalObject()->nullPrototypeObjectStructure());
}
JSValue JSModuleLoader::evaluate(ExecState* exec, JSValue key, JSValue moduleRecordValue, JSValue scriptFetcher)
{
if (Options::dumpModuleLoadingState())
dataLog("Loader [evaluate] ", printableModuleKey(exec, key), "\n");
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
if (globalObject->globalObjectMethodTable()->moduleLoaderEvaluate)
return globalObject->globalObjectMethodTable()->moduleLoaderEvaluate(globalObject, exec, this, key, moduleRecordValue, scriptFetcher);
if (auto* moduleRecord = jsDynamicCast<AbstractModuleRecord*>(exec->vm(), moduleRecordValue))
return moduleRecord->evaluate(exec);
return jsUndefined();
}
JSModuleNamespaceObject* JSModuleLoader::getModuleNamespaceObject(ExecState* exec, JSValue moduleRecordValue)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
auto* moduleRecord = jsDynamicCast<AbstractModuleRecord*>(vm, moduleRecordValue);
if (!moduleRecord) {
throwTypeError(exec, scope);
return nullptr;
}
scope.release();
return moduleRecord->getModuleNamespace(exec);
}
// ------------------------------ Functions --------------------------------
EncodedJSValue JSC_HOST_CALL moduleLoaderParseModule(ExecState* exec)
{
VM& vm = exec->vm();
auto scope = DECLARE_CATCH_SCOPE(vm);
JSInternalPromiseDeferred* deferred = JSInternalPromiseDeferred::create(exec, exec->lexicalGlobalObject());
scope.releaseAssertNoException();
auto reject = [&] {
JSValue exception = scope.exception();
scope.clearException();
auto result = deferred->reject(exec, exception);
scope.releaseAssertNoException();
return JSValue::encode(result);
};
const Identifier moduleKey = exec->argument(0).toPropertyKey(exec);
if (UNLIKELY(scope.exception()))
return reject();
JSValue source = exec->argument(1);
auto* jsSourceCode = jsCast<JSSourceCode*>(source);
SourceCode sourceCode = jsSourceCode->sourceCode();
#if ENABLE(WEBASSEMBLY)
if (sourceCode.provider()->sourceType() == SourceProviderSourceType::WebAssembly)
return JSValue::encode(WebAssemblyPrototype::instantiate(exec, 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()) {
auto result = deferred->reject(exec, error.toErrorObject(exec->lexicalGlobalObject(), sourceCode));
scope.releaseAssertNoException();
return JSValue::encode(result);
}
ASSERT(moduleProgramNode);
ModuleAnalyzer moduleAnalyzer(exec, moduleKey, sourceCode, moduleProgramNode->varDeclarations(), moduleProgramNode->lexicalVariables());
if (UNLIKELY(scope.exception()))
return reject();
auto result = deferred->resolve(exec, moduleAnalyzer.analyze(*moduleProgramNode));
scope.releaseAssertNoException();
return JSValue::encode(result);
}
EncodedJSValue JSC_HOST_CALL moduleLoaderRequestedModules(ExecState* exec)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
auto* moduleRecord = jsDynamicCast<AbstractModuleRecord*>(vm, exec->argument(0));
if (!moduleRecord) {
scope.release();
return JSValue::encode(constructEmptyArray(exec, nullptr));
}
JSArray* result = constructEmptyArray(exec, nullptr, moduleRecord->requestedModules().size());
RETURN_IF_EXCEPTION(scope, encodedJSValue());
size_t i = 0;
for (auto& key : moduleRecord->requestedModules()) {
result->putDirectIndex(exec, i++, jsString(exec, key.get()));
RETURN_IF_EXCEPTION(scope, encodedJSValue());
}
return JSValue::encode(result);
}
EncodedJSValue JSC_HOST_CALL moduleLoaderModuleDeclarationInstantiation(ExecState* exec)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
auto* moduleRecord = jsDynamicCast<AbstractModuleRecord*>(vm, exec->argument(0));
if (!moduleRecord)
return JSValue::encode(jsUndefined());
if (Options::dumpModuleLoadingState())
dataLog("Loader [link] ", moduleRecord->moduleKey(), "\n");
moduleRecord->link(exec, exec->argument(1));
RETURN_IF_EXCEPTION(scope, encodedJSValue());
return JSValue::encode(jsUndefined());
}
// ------------------------------ Hook Functions ---------------------------
EncodedJSValue JSC_HOST_CALL moduleLoaderResolve(ExecState* exec)
{
VM& vm = exec->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, exec->thisValue());
if (!loader)
return JSValue::encode(jsUndefined());
return JSValue::encode(loader->resolve(exec, exec->argument(0), exec->argument(1), exec->argument(2)));
}
EncodedJSValue JSC_HOST_CALL moduleLoaderResolveSync(ExecState* exec)
{
VM& vm = exec->vm();
auto scope = DECLARE_CATCH_SCOPE(vm);
JSModuleLoader* loader = jsDynamicCast<JSModuleLoader*>(vm, exec->thisValue());
if (!loader)
return JSValue::encode(jsUndefined());
auto result = loader->resolveSync(exec, exec->argument(0), exec->argument(1), exec->argument(2));
RETURN_IF_EXCEPTION(scope, encodedJSValue());
return JSValue::encode(identifierToJSValue(vm, result));
}
EncodedJSValue JSC_HOST_CALL moduleLoaderFetch(ExecState* exec)
{
VM& vm = exec->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, exec->thisValue());
if (!loader)
return JSValue::encode(jsUndefined());
return JSValue::encode(loader->fetch(exec, exec->argument(0), exec->argument(1), exec->argument(2)));
}
EncodedJSValue JSC_HOST_CALL moduleLoaderGetModuleNamespaceObject(ExecState* exec)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
auto* loader = jsDynamicCast<JSModuleLoader*>(vm, exec->thisValue());
if (!loader)
return JSValue::encode(jsUndefined());
auto* moduleNamespaceObject = loader->getModuleNamespaceObject(exec, exec->argument(0));
RETURN_IF_EXCEPTION(scope, encodedJSValue());
return JSValue::encode(moduleNamespaceObject);
}
// ------------------- Additional Hook Functions ---------------------------
EncodedJSValue JSC_HOST_CALL moduleLoaderEvaluate(ExecState* exec)
{
// To instrument and retrieve the errors raised from the module execution,
// we inserted the hook point here.
VM& vm = exec->vm();
JSModuleLoader* loader = jsDynamicCast<JSModuleLoader*>(vm, exec->thisValue());
if (!loader)
return JSValue::encode(jsUndefined());
return JSValue::encode(loader->evaluate(exec, exec->argument(0), exec->argument(1), exec->argument(2)));
}
} // namespace JSC