JSObject* EvalExecutable::compileInternal(ExecState* exec, ScopeChainNode* scopeChainNode, JITCode::JITType jitType)
{
SamplingRegion samplingRegion(jitType == JITCode::BaselineJIT ? "Baseline Compilation (TOTAL)" : "DFG Compilation (TOTAL)");
#if !ENABLE(JIT)
UNUSED_PARAM(jitType);
#endif
JSObject* exception = 0;
JSGlobalData* globalData = &exec->globalData();
JSGlobalObject* lexicalGlobalObject = exec->lexicalGlobalObject();
if (!!m_evalCodeBlock && m_evalCodeBlock->canProduceCopyWithBytecode()) {
BytecodeDestructionBlocker blocker(m_evalCodeBlock.get());
OwnPtr<EvalCodeBlock> newCodeBlock = adoptPtr(new EvalCodeBlock(CodeBlock::CopyParsedBlock, *m_evalCodeBlock));
newCodeBlock->setAlternative(static_pointer_cast<CodeBlock>(m_evalCodeBlock.release()));
m_evalCodeBlock = newCodeBlock.release();
} else {
if (!lexicalGlobalObject->evalEnabled())
return throwError(exec, createEvalError(exec, "Eval is disabled"));
RefPtr<EvalNode> evalNode = parse<EvalNode>(globalData, lexicalGlobalObject, m_source, 0, isStrictMode() ? JSParseStrict : JSParseNormal, EvalNode::isFunctionNode ? JSParseFunctionCode : JSParseProgramCode, lexicalGlobalObject->debugger(), exec, &exception);
if (!evalNode) {
ASSERT(exception);
return exception;
}
recordParse(evalNode->features(), evalNode->hasCapturedVariables(), evalNode->lineNo(), evalNode->lastLine());
JSGlobalObject* globalObject = scopeChainNode->globalObject.get();
OwnPtr<CodeBlock> previousCodeBlock = m_evalCodeBlock.release();
ASSERT((jitType == JITCode::bottomTierJIT()) == !previousCodeBlock);
m_evalCodeBlock = adoptPtr(new EvalCodeBlock(this, globalObject, source().provider(), scopeChainNode->localDepth(), previousCodeBlock.release()));
OwnPtr<BytecodeGenerator> generator(adoptPtr(new BytecodeGenerator(evalNode.get(), scopeChainNode, m_evalCodeBlock->symbolTable(), m_evalCodeBlock.get(), !!m_evalCodeBlock->alternative() ? OptimizingCompilation : FirstCompilation)));
if ((exception = generator->generate())) {
m_evalCodeBlock = static_pointer_cast<EvalCodeBlock>(m_evalCodeBlock->releaseAlternative());
evalNode->destroyData();
return exception;
}
evalNode->destroyData();
m_evalCodeBlock->copyPostParseDataFromAlternative();
}
#if ENABLE(JIT)
if (!jitCompileIfAppropriate(*globalData, m_evalCodeBlock, m_jitCodeForCall, jitType))
return 0;
#endif
#if ENABLE(JIT)
#if ENABLE(INTERPRETER)
if (!m_jitCodeForCall)
Heap::heap(this)->reportExtraMemoryCost(sizeof(*m_evalCodeBlock));
else
#endif
Heap::heap(this)->reportExtraMemoryCost(sizeof(*m_evalCodeBlock) + m_jitCodeForCall.size());
#else
Heap::heap(this)->reportExtraMemoryCost(sizeof(*m_evalCodeBlock));
#endif
return 0;
}
JSObject* EvalExecutable::compileInternal(ExecState* exec, JSScope* scope, JITCode::JITType jitType, unsigned bytecodeIndex)
{
SamplingRegion samplingRegion(samplingDescription(jitType));
#if !ENABLE(JIT)
UNUSED_PARAM(jitType);
UNUSED_PARAM(bytecodeIndex);
#endif
JSGlobalData* globalData = &exec->globalData();
JSGlobalObject* lexicalGlobalObject = exec->lexicalGlobalObject();
if (!!m_evalCodeBlock) {
OwnPtr<EvalCodeBlock> newCodeBlock = adoptPtr(new EvalCodeBlock(CodeBlock::CopyParsedBlock, *m_evalCodeBlock));
newCodeBlock->setAlternative(static_pointer_cast<CodeBlock>(m_evalCodeBlock.release()));
m_evalCodeBlock = newCodeBlock.release();
} else {
UNUSED_PARAM(scope);
UNUSED_PARAM(globalData);
UNUSED_PARAM(lexicalGlobalObject);
if (!lexicalGlobalObject->evalEnabled())
return throwError(exec, createEvalError(exec, lexicalGlobalObject->evalDisabledErrorMessage()));
JSObject* exception = 0;
UnlinkedEvalCodeBlock* unlinkedEvalCode = lexicalGlobalObject->createEvalCodeBlock(exec, this, &exception);
if (!unlinkedEvalCode)
return exception;
OwnPtr<CodeBlock> previousCodeBlock = m_evalCodeBlock.release();
ASSERT((jitType == JITCode::bottomTierJIT()) == !previousCodeBlock);
m_unlinkedEvalCodeBlock.set(*globalData, this, unlinkedEvalCode);
m_evalCodeBlock = adoptPtr(new EvalCodeBlock(this, unlinkedEvalCode, lexicalGlobalObject, source().provider(), scope->localDepth(), previousCodeBlock.release()));
m_evalCodeBlock->copyPostParseDataFromAlternative();
}
#if ENABLE(JIT)
if (!prepareForExecution(exec, m_evalCodeBlock, m_jitCodeForCall, jitType, bytecodeIndex))
return 0;
#endif
#if ENABLE(JIT)
Heap::heap(this)->reportExtraMemoryCost(sizeof(*m_evalCodeBlock) + m_jitCodeForCall.size());
#else
Heap::heap(this)->reportExtraMemoryCost(sizeof(*m_evalCodeBlock));
#endif
return 0;
}
EvalExecutable* EvalExecutable::create(ExecState* exec, const SourceCode& source, bool isInStrictContext, ThisTDZMode thisTDZMode, const VariableEnvironment* variablesUnderTDZ)
{
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
if (!globalObject->evalEnabled()) {
exec->vm().throwException(exec, createEvalError(exec, globalObject->evalDisabledErrorMessage()));
return 0;
}
EvalExecutable* executable = new (NotNull, allocateCell<EvalExecutable>(*exec->heap())) EvalExecutable(exec, source, isInStrictContext);
executable->finishCreation(exec->vm());
UnlinkedEvalCodeBlock* unlinkedEvalCode = globalObject->createEvalCodeBlock(exec, executable, thisTDZMode, variablesUnderTDZ);
if (!unlinkedEvalCode)
return 0;
executable->m_unlinkedEvalCodeBlock.set(exec->vm(), executable, unlinkedEvalCode);
return executable;
}
JSValue JSInjectedScriptHost::evaluate(ExecState* exec)
{
JSValue expression = exec->argument(0);
if (!expression.isString())
return throwError(exec, createError(exec, "String argument expected."));
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
JSFunction* evalFunction = globalObject->evalFunction();
CallData callData;
CallType callType = evalFunction->methodTable()->getCallData(evalFunction, callData);
if (callType == CallTypeNone)
return jsUndefined();
MarkedArgumentBuffer args;
args.append(expression);
bool wasEvalEnabled = globalObject->evalEnabled();
globalObject->setEvalEnabled(true);
JSValue result = JSC::call(exec, evalFunction, callType, callData, exec->globalThisValue(), args);
globalObject->setEvalEnabled(wasEvalEnabled);
return result;
}
EvalExecutable* EvalExecutable::create(ExecState* exec, const SourceCode& source, bool isInStrictContext, DerivedContextType derivedContextType, bool isArrowFunctionContext, EvalContextType evalContextType, const VariableEnvironment* variablesUnderTDZ)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
if (!globalObject->evalEnabled()) {
throwException(exec, scope, createEvalError(exec, globalObject->evalDisabledErrorMessage()));
return 0;
}
EvalExecutable* executable = new (NotNull, allocateCell<EvalExecutable>(*exec->heap())) EvalExecutable(exec, source, isInStrictContext, derivedContextType, isArrowFunctionContext, evalContextType);
executable->finishCreation(vm);
UnlinkedEvalCodeBlock* unlinkedEvalCode = globalObject->createEvalCodeBlock(exec, executable, variablesUnderTDZ);
if (!unlinkedEvalCode)
return 0;
executable->m_unlinkedEvalCodeBlock.set(vm, executable, unlinkedEvalCode);
return executable;
}
JSObject* EvalExecutable::compileInternal(ExecState* exec, ScopeChainNode* scopeChainNode, JITCode::JITType jitType)
{
#if !ENABLE(JIT)
UNUSED_PARAM(jitType);
#endif
JSObject* exception = 0;
JSGlobalData* globalData = &exec->globalData();
JSGlobalObject* lexicalGlobalObject = exec->lexicalGlobalObject();
if (!lexicalGlobalObject->evalEnabled())
return throwError(exec, createEvalError(exec, "Eval is disabled"));
RefPtr<EvalNode> evalNode = globalData->parser->parse<EvalNode>(lexicalGlobalObject, lexicalGlobalObject->debugger(), exec, m_source, 0, isStrictMode() ? JSParseStrict : JSParseNormal, &exception);
if (!evalNode) {
ASSERT(exception);
return exception;
}
recordParse(evalNode->features(), evalNode->hasCapturedVariables(), evalNode->lineNo(), evalNode->lastLine());
JSGlobalObject* globalObject = scopeChainNode->globalObject.get();
OwnPtr<CodeBlock> previousCodeBlock = m_evalCodeBlock.release();
ASSERT((jitType == JITCode::bottomTierJIT()) == !previousCodeBlock);
m_evalCodeBlock = adoptPtr(new EvalCodeBlock(this, globalObject, source().provider(), scopeChainNode->localDepth(), previousCodeBlock.release()));
OwnPtr<BytecodeGenerator> generator(adoptPtr(new BytecodeGenerator(evalNode.get(), scopeChainNode, m_evalCodeBlock->symbolTable(), m_evalCodeBlock.get(), !!m_evalCodeBlock->alternative() ? OptimizingCompilation : FirstCompilation)));
if ((exception = generator->generate())) {
m_evalCodeBlock = static_pointer_cast<EvalCodeBlock>(m_evalCodeBlock->releaseAlternative());
evalNode->destroyData();
return exception;
}
evalNode->destroyData();
m_evalCodeBlock->copyDataFromAlternative();
#if ENABLE(JIT)
if (exec->globalData().canUseJIT()) {
bool dfgCompiled = false;
if (jitType == JITCode::DFGJIT)
dfgCompiled = DFG::tryCompile(exec, m_evalCodeBlock.get(), m_jitCodeForCall);
if (dfgCompiled)
ASSERT(!m_evalCodeBlock->alternative() || !m_evalCodeBlock->alternative()->hasIncomingCalls());
else {
if (m_evalCodeBlock->alternative()) {
// There is already an alternative piece of code compiled with a different
// JIT, so we can silently fail.
m_evalCodeBlock = static_pointer_cast<EvalCodeBlock>(m_evalCodeBlock->releaseAlternative());
return 0;
}
m_jitCodeForCall = JIT::compile(scopeChainNode->globalData, m_evalCodeBlock.get());
}
#if !ENABLE(OPCODE_SAMPLING)
if (!BytecodeGenerator::dumpsGeneratedCode())
m_evalCodeBlock->discardBytecode();
#endif
m_evalCodeBlock->setJITCode(m_jitCodeForCall, MacroAssemblerCodePtr());
}
#endif
#if ENABLE(JIT)
#if ENABLE(INTERPRETER)
if (!m_jitCodeForCall)
Heap::heap(this)->reportExtraMemoryCost(sizeof(*m_evalCodeBlock));
else
#endif
Heap::heap(this)->reportExtraMemoryCost(sizeof(*m_evalCodeBlock) + m_jitCodeForCall.size());
#else
Heap::heap(this)->reportExtraMemoryCost(sizeof(*m_evalCodeBlock));
#endif
return 0;
}