blob: 19796af4f89d2e881fb7d579602c094f7e5fea61 [file] [log] [blame]
/*
* Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
* Copyright (C) 2003-2019 Apple Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "Completion.h"
#include "CallFrame.h"
#include "CatchScope.h"
#include "CodeCache.h"
#include "CodeProfiling.h"
#include "Exception.h"
#include "IdentifierInlines.h"
#include "Interpreter.h"
#include "JSCInlines.h"
#include "JSGlobalObject.h"
#include "JSInternalPromise.h"
#include "JSInternalPromiseDeferred.h"
#include "JSLock.h"
#include "JSModuleLoader.h"
#include "JSModuleRecord.h"
#include "JSWithScope.h"
#include "ModuleAnalyzer.h"
#include "Parser.h"
#include "ProgramExecutable.h"
#include "ScriptProfilingScope.h"
namespace JSC {
static inline bool checkSyntaxInternal(VM& vm, const SourceCode& source, ParserError& error)
{
return !!parse<ProgramNode>(
&vm, source, Identifier(), JSParserBuiltinMode::NotBuiltin,
JSParserStrictMode::NotStrict, JSParserScriptMode::Classic, SourceParseMode::ProgramMode, SuperBinding::NotNeeded, error);
}
bool checkSyntax(ExecState* exec, const SourceCode& source, JSValue* returnedException)
{
VM& vm = exec->vm();
JSLockHolder lock(vm);
RELEASE_ASSERT(vm.atomicStringTable() == Thread::current().atomicStringTable());
ParserError error;
if (checkSyntaxInternal(vm, source, error))
return true;
ASSERT(error.isValid());
if (returnedException)
*returnedException = error.toErrorObject(exec->lexicalGlobalObject(), source);
return false;
}
bool checkSyntax(VM& vm, const SourceCode& source, ParserError& error)
{
JSLockHolder lock(vm);
RELEASE_ASSERT(vm.atomicStringTable() == Thread::current().atomicStringTable());
return checkSyntaxInternal(vm, source, error);
}
bool checkModuleSyntax(ExecState* exec, const SourceCode& source, ParserError& error)
{
VM& vm = exec->vm();
JSLockHolder lock(vm);
RELEASE_ASSERT(vm.atomicStringTable() == Thread::current().atomicStringTable());
std::unique_ptr<ModuleProgramNode> moduleProgramNode = parse<ModuleProgramNode>(
&vm, source, Identifier(), JSParserBuiltinMode::NotBuiltin,
JSParserStrictMode::Strict, JSParserScriptMode::Module, SourceParseMode::ModuleAnalyzeMode, SuperBinding::NotNeeded, error);
if (!moduleProgramNode)
return false;
PrivateName privateName(PrivateName::Description, "EntryPointModule");
ModuleAnalyzer moduleAnalyzer(exec, Identifier::fromUid(privateName), source, moduleProgramNode->varDeclarations(), moduleProgramNode->lexicalVariables());
moduleAnalyzer.analyze(*moduleProgramNode);
return true;
}
Ref<CachedBytecode> generateProgramBytecode(VM& vm, const SourceCode& source, ParserError& error)
{
JSLockHolder lock(vm);
RELEASE_ASSERT(vm.atomicStringTable() == Thread::current().atomicStringTable());
VariableEnvironment variablesUnderTDZ;
JSParserStrictMode strictMode = JSParserStrictMode::NotStrict;
JSParserScriptMode scriptMode = JSParserScriptMode::Classic;
EvalContextType evalContextType = EvalContextType::None;
UnlinkedCodeBlock* unlinkedCodeBlock = recursivelyGenerateUnlinkedCodeBlock<UnlinkedProgramCodeBlock>(vm, source, strictMode, scriptMode, { }, error, evalContextType, &variablesUnderTDZ);
if (!unlinkedCodeBlock)
return CachedBytecode::create();
return serializeBytecode(vm, unlinkedCodeBlock, source, SourceCodeType::ProgramType, strictMode, scriptMode, { });
}
Ref<CachedBytecode> generateModuleBytecode(VM& vm, const SourceCode& source, ParserError& error)
{
JSLockHolder lock(vm);
RELEASE_ASSERT(vm.atomicStringTable() == Thread::current().atomicStringTable());
VariableEnvironment variablesUnderTDZ;
JSParserStrictMode strictMode = JSParserStrictMode::Strict;
JSParserScriptMode scriptMode = JSParserScriptMode::Module;
EvalContextType evalContextType = EvalContextType::None;
UnlinkedCodeBlock* unlinkedCodeBlock = recursivelyGenerateUnlinkedCodeBlock<UnlinkedModuleProgramCodeBlock>(vm, source, strictMode, scriptMode, { }, error, evalContextType, &variablesUnderTDZ);
if (!unlinkedCodeBlock)
return CachedBytecode::create();
return serializeBytecode(vm, unlinkedCodeBlock, source, SourceCodeType::ModuleType, strictMode, scriptMode, { });
}
JSValue evaluate(ExecState* exec, const SourceCode& source, JSValue thisValue, NakedPtr<Exception>& returnedException)
{
VM& vm = exec->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_CATCH_SCOPE(vm);
RELEASE_ASSERT(vm.atomicStringTable() == Thread::current().atomicStringTable());
RELEASE_ASSERT(!vm.isCollectorBusyOnCurrentThread());
CodeProfiling profile(source);
if (!thisValue || thisValue.isUndefinedOrNull())
thisValue = vm.vmEntryGlobalObject(exec);
JSObject* thisObj = jsCast<JSObject*>(thisValue.toThis(exec, NotStrictMode));
JSValue result = vm.interpreter->executeProgram(source, exec, thisObj);
if (scope.exception()) {
returnedException = scope.exception();
scope.clearException();
return jsUndefined();
}
RELEASE_ASSERT(result);
return result;
}
JSValue profiledEvaluate(ExecState* exec, ProfilingReason reason, const SourceCode& source, JSValue thisValue, NakedPtr<Exception>& returnedException)
{
VM& vm = exec->vm();
ScriptProfilingScope profilingScope(vm.vmEntryGlobalObject(exec), reason);
return evaluate(exec, source, thisValue, returnedException);
}
JSValue evaluateWithScopeExtension(ExecState* exec, const SourceCode& source, JSObject* scopeExtensionObject, NakedPtr<Exception>& returnedException)
{
VM& vm = exec->vm();
JSGlobalObject* globalObject = vm.vmEntryGlobalObject(exec);
if (scopeExtensionObject) {
JSScope* ignoredPreviousScope = globalObject->globalScope();
globalObject->setGlobalScopeExtension(JSWithScope::create(vm, globalObject, ignoredPreviousScope, scopeExtensionObject));
}
JSValue returnValue = JSC::evaluate(globalObject->globalExec(), source, globalObject, returnedException);
if (scopeExtensionObject)
globalObject->clearGlobalScopeExtension();
return returnValue;
}
static Symbol* createSymbolForEntryPointModule(VM& vm)
{
// Generate the unique key for the source-provided module.
PrivateName privateName(PrivateName::Description, "EntryPointModule");
return Symbol::create(vm, privateName.uid());
}
static JSInternalPromise* rejectPromise(ExecState* exec, JSGlobalObject* globalObject)
{
VM& vm = exec->vm();
auto scope = DECLARE_CATCH_SCOPE(vm);
scope.assertNoException();
JSValue exception = scope.exception()->value();
scope.clearException();
JSInternalPromiseDeferred* deferred = JSInternalPromiseDeferred::tryCreate(exec, globalObject);
scope.releaseAssertNoException();
deferred->reject(exec, exception);
scope.releaseAssertNoException();
return deferred->promise();
}
JSInternalPromise* loadAndEvaluateModule(ExecState* exec, Symbol* moduleId, JSValue parameters, JSValue scriptFetcher)
{
VM& vm = exec->vm();
JSLockHolder lock(vm);
RELEASE_ASSERT(vm.atomicStringTable() == Thread::current().atomicStringTable());
RELEASE_ASSERT(!vm.isCollectorBusyOnCurrentThread());
return vm.vmEntryGlobalObject(exec)->moduleLoader()->loadAndEvaluateModule(exec, moduleId, parameters, scriptFetcher);
}
JSInternalPromise* loadAndEvaluateModule(ExecState* exec, const String& moduleName, JSValue parameters, JSValue scriptFetcher)
{
VM& vm = exec->vm();
JSLockHolder lock(vm);
RELEASE_ASSERT(vm.atomicStringTable() == Thread::current().atomicStringTable());
RELEASE_ASSERT(!vm.isCollectorBusyOnCurrentThread());
return vm.vmEntryGlobalObject(exec)->moduleLoader()->loadAndEvaluateModule(exec, identifierToJSValue(vm, Identifier::fromString(exec, moduleName)), parameters, scriptFetcher);
}
JSInternalPromise* loadAndEvaluateModule(ExecState* exec, const SourceCode& source, JSValue scriptFetcher)
{
VM& vm = exec->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_THROW_SCOPE(vm);
RELEASE_ASSERT(vm.atomicStringTable() == Thread::current().atomicStringTable());
RELEASE_ASSERT(!vm.isCollectorBusyOnCurrentThread());
Symbol* key = createSymbolForEntryPointModule(vm);
JSGlobalObject* globalObject = vm.vmEntryGlobalObject(exec);
// Insert the given source code to the ModuleLoader registry as the fetched registry entry.
globalObject->moduleLoader()->provideFetch(exec, key, source);
RETURN_IF_EXCEPTION(scope, rejectPromise(exec, globalObject));
return globalObject->moduleLoader()->loadAndEvaluateModule(exec, key, jsUndefined(), scriptFetcher);
}
JSInternalPromise* loadModule(ExecState* exec, const String& moduleName, JSValue parameters, JSValue scriptFetcher)
{
VM& vm = exec->vm();
JSLockHolder lock(vm);
RELEASE_ASSERT(vm.atomicStringTable() == Thread::current().atomicStringTable());
RELEASE_ASSERT(!vm.isCollectorBusyOnCurrentThread());
return vm.vmEntryGlobalObject(exec)->moduleLoader()->loadModule(exec, identifierToJSValue(vm, Identifier::fromString(exec, moduleName)), parameters, scriptFetcher);
}
JSInternalPromise* loadModule(ExecState* exec, const SourceCode& source, JSValue scriptFetcher)
{
VM& vm = exec->vm();
JSLockHolder lock(vm);
auto scope = DECLARE_THROW_SCOPE(vm);
RELEASE_ASSERT(vm.atomicStringTable() == Thread::current().atomicStringTable());
RELEASE_ASSERT(!vm.isCollectorBusyOnCurrentThread());
Symbol* key = createSymbolForEntryPointModule(vm);
JSGlobalObject* globalObject = vm.vmEntryGlobalObject(exec);
// Insert the given source code to the ModuleLoader registry as the fetched registry entry.
// FIXME: Introduce JSSourceCode object to wrap around this source.
globalObject->moduleLoader()->provideFetch(exec, key, source);
RETURN_IF_EXCEPTION(scope, rejectPromise(exec, globalObject));
return globalObject->moduleLoader()->loadModule(exec, key, jsUndefined(), scriptFetcher);
}
JSValue linkAndEvaluateModule(ExecState* exec, const Identifier& moduleKey, JSValue scriptFetcher)
{
VM& vm = exec->vm();
JSLockHolder lock(vm);
RELEASE_ASSERT(vm.atomicStringTable() == Thread::current().atomicStringTable());
RELEASE_ASSERT(!vm.isCollectorBusyOnCurrentThread());
JSGlobalObject* globalObject = vm.vmEntryGlobalObject(exec);
return globalObject->moduleLoader()->linkAndEvaluateModule(exec, identifierToJSValue(vm, moduleKey), scriptFetcher);
}
JSInternalPromise* importModule(ExecState* exec, const Identifier& moduleKey, JSValue parameters, JSValue scriptFetcher)
{
VM& vm = exec->vm();
JSLockHolder lock(vm);
RELEASE_ASSERT(vm.atomicStringTable() == Thread::current().atomicStringTable());
RELEASE_ASSERT(!vm.isCollectorBusyOnCurrentThread());
return vm.vmEntryGlobalObject(exec)->moduleLoader()->requestImportModule(exec, moduleKey, parameters, scriptFetcher);
}
} // namespace JSC