UnlinkedCodeBlockType* CodeCache::getGlobalCodeBlock(VM& vm, ExecutableType* executable, const SourceCode& source, JSParserStrictness strictness, DebuggerMode debuggerMode, ProfilerMode profilerMode, ParserError& error)
{
SourceCodeKey key = SourceCodeKey(source, String(), CacheTypes<UnlinkedCodeBlockType>::codeType, strictness);
CodeCacheMap::AddResult addResult = m_sourceCode.add(key, SourceCodeValue());
bool canCache = debuggerMode == DebuggerOff && profilerMode == ProfilerOff && !vm.typeProfiler();
if (!addResult.isNewEntry && canCache) {
UnlinkedCodeBlockType* unlinkedCodeBlock = jsCast<UnlinkedCodeBlockType*>(addResult.iterator->value.cell.get());
unsigned firstLine = source.firstLine() + unlinkedCodeBlock->firstLine();
unsigned lineCount = unlinkedCodeBlock->lineCount();
unsigned startColumn = unlinkedCodeBlock->startColumn() + source.startColumn();
bool endColumnIsOnStartLine = !lineCount;
unsigned endColumn = unlinkedCodeBlock->endColumn() + (endColumnIsOnStartLine ? startColumn : 1);
executable->recordParse(unlinkedCodeBlock->codeFeatures(), unlinkedCodeBlock->hasCapturedVariables(), firstLine, firstLine + lineCount, startColumn, endColumn);
return unlinkedCodeBlock;
}
#if ENABLE(VMOLAB_TIME)
if (executable->info() == ProgramExecutable::info())
TimeCounter::start(TimeCounter::TYPEglobparse);
#endif
typedef typename CacheTypes<UnlinkedCodeBlockType>::RootNode RootNode;
RefPtr<RootNode> rootNode = parse<RootNode>(&vm, source, 0, Identifier(), strictness, JSParseProgramCode, error);
#if ENABLE(VMOLAB_TIME)
if (executable->info() == ProgramExecutable::info())
TimeCounter::stop(TimeCounter::TYPEglobparse);
#endif
if (!rootNode) {
m_sourceCode.remove(addResult.iterator);
return 0;
}
unsigned lineCount = rootNode->lastLine() - rootNode->lineNo();
unsigned startColumn = rootNode->startColumn() + 1;
bool endColumnIsOnStartLine = !lineCount;
unsigned unlinkedEndColumn = rootNode->endColumn();
unsigned endColumn = unlinkedEndColumn + (endColumnIsOnStartLine ? startColumn : 1);
executable->recordParse(rootNode->features(), rootNode->hasCapturedVariables(), rootNode->lineNo(), rootNode->lastLine(), startColumn, endColumn);
UnlinkedCodeBlockType* unlinkedCodeBlock = UnlinkedCodeBlockType::create(&vm, executable->executableInfo());
unlinkedCodeBlock->recordParse(rootNode->features(), rootNode->hasCapturedVariables(), rootNode->lineNo() - source.firstLine(), lineCount, unlinkedEndColumn);
OwnPtr<BytecodeGenerator> generator(adoptPtr(new BytecodeGenerator(vm, rootNode.get(), unlinkedCodeBlock, debuggerMode, profilerMode)));
error = generator->generate();
rootNode->destroyData();
if (error.m_type != ParserError::ErrorNone) {
m_sourceCode.remove(addResult.iterator);
return 0;
}
if (!canCache) {
m_sourceCode.remove(addResult.iterator);
return unlinkedCodeBlock;
}
addResult.iterator->value = SourceCodeValue(vm, unlinkedCodeBlock, m_sourceCode.age());
return unlinkedCodeBlock;
}
UnlinkedCodeBlockType* CodeCache::getGlobalCodeBlock(VM& vm, ExecutableType* executable, const SourceCode& source, JSParserBuiltinMode builtinMode, JSParserStrictMode strictMode, ThisTDZMode thisTDZMode, bool, DebuggerMode debuggerMode, ProfilerMode profilerMode, ParserError& error, const VariableEnvironment* variablesUnderTDZ)
{
SourceCodeKey key = SourceCodeKey(source, String(), CacheTypes<UnlinkedCodeBlockType>::codeType, builtinMode, strictMode, thisTDZMode);
SourceCodeValue* cache = m_sourceCode.findCacheAndUpdateAge(key);
bool canCache = debuggerMode == DebuggerOff && profilerMode == ProfilerOff && !vm.typeProfiler() && !vm.controlFlowProfiler();
if (cache && canCache) {
UnlinkedCodeBlockType* unlinkedCodeBlock = jsCast<UnlinkedCodeBlockType*>(cache->cell.get());
unsigned firstLine = source.firstLine() + unlinkedCodeBlock->firstLine();
unsigned lineCount = unlinkedCodeBlock->lineCount();
unsigned startColumn = unlinkedCodeBlock->startColumn() + source.startColumn();
bool endColumnIsOnStartLine = !lineCount;
unsigned endColumn = unlinkedCodeBlock->endColumn() + (endColumnIsOnStartLine ? startColumn : 1);
executable->recordParse(unlinkedCodeBlock->codeFeatures(), unlinkedCodeBlock->hasCapturedVariables(), firstLine, firstLine + lineCount, startColumn, endColumn);
return unlinkedCodeBlock;
}
typedef typename CacheTypes<UnlinkedCodeBlockType>::RootNode RootNode;
std::unique_ptr<RootNode> rootNode = parse<RootNode>(
&vm, source, Identifier(), builtinMode, strictMode,
CacheTypes<UnlinkedCodeBlockType>::parseMode, SuperBinding::NotNeeded, error, nullptr, ConstructorKind::None, thisTDZMode);
if (!rootNode)
return nullptr;
unsigned lineCount = rootNode->lastLine() - rootNode->firstLine();
unsigned startColumn = rootNode->startColumn() + 1;
bool endColumnIsOnStartLine = !lineCount;
unsigned unlinkedEndColumn = rootNode->endColumn();
unsigned endColumn = unlinkedEndColumn + (endColumnIsOnStartLine ? startColumn : 1);
unsigned arrowContextFeature = executable->isArrowFunctionContext() ? ArrowFunctionContextFeature : 0;
executable->recordParse(rootNode->features() | arrowContextFeature, rootNode->hasCapturedVariables(), rootNode->firstLine(), rootNode->lastLine(), startColumn, endColumn);
UnlinkedCodeBlockType* unlinkedCodeBlock = UnlinkedCodeBlockType::create(&vm, executable->executableInfo());
unlinkedCodeBlock->recordParse(rootNode->features(), rootNode->hasCapturedVariables(), rootNode->firstLine() - source.firstLine(), lineCount, unlinkedEndColumn);
auto generator = std::make_unique<BytecodeGenerator>(vm, rootNode.get(), unlinkedCodeBlock, debuggerMode, profilerMode, variablesUnderTDZ);
error = generator->generate();
if (error.isValid())
return nullptr;
if (!canCache)
return unlinkedCodeBlock;
m_sourceCode.addCache(key, SourceCodeValue(vm, unlinkedCodeBlock, m_sourceCode.age()));
return unlinkedCodeBlock;
}
UnlinkedCodeBlockType* CodeCache::getCodeBlock(JSGlobalData& globalData, ExecutableType* executable, const SourceCode& source, JSParserStrictness strictness, DebuggerMode debuggerMode, ProfilerMode profilerMode, ParserError& error)
{
CodeBlockKey key = makeCodeBlockKey(source, CacheTypes<UnlinkedCodeBlockType>::codeType, strictness);
bool storeInCache = false;
if (debuggerMode == DebuggerOff && profilerMode == ProfilerOff) {
const Strong<UnlinkedCodeBlock>* result = m_cachedCodeBlocks.find(key);
if (result) {
UnlinkedCodeBlockType* unlinkedCode = jsCast<UnlinkedCodeBlockType*>(result->get());
unsigned firstLine = source.firstLine() + unlinkedCode->firstLine();
executable->recordParse(unlinkedCode->codeFeatures(), unlinkedCode->hasCapturedVariables(), firstLine, firstLine + unlinkedCode->lineCount());
return unlinkedCode;
}
storeInCache = true;
}
typedef typename CacheTypes<UnlinkedCodeBlockType>::RootNode RootNode;
RefPtr<RootNode> rootNode = parse<RootNode>(&globalData, source, 0, Identifier(), strictness, JSParseProgramCode, error);
if (!rootNode)
return 0;
executable->recordParse(rootNode->features(), rootNode->hasCapturedVariables(), rootNode->lineNo(), rootNode->lastLine());
UnlinkedCodeBlockType* unlinkedCode = UnlinkedCodeBlockType::create(&globalData, executable->executableInfo());
unlinkedCode->recordParse(rootNode->features(), rootNode->hasCapturedVariables(), rootNode->lineNo() - source.firstLine(), rootNode->lastLine() - rootNode->lineNo());
OwnPtr<BytecodeGenerator> generator(adoptPtr(new BytecodeGenerator(globalData, rootNode.get(), unlinkedCode, debuggerMode, profilerMode)));
error = generator->generate();
rootNode->destroyData();
if (error.m_type != ParserError::ErrorNone)
return 0;
if (storeInCache)
m_cachedCodeBlocks.add(key, Strong<UnlinkedCodeBlock>(globalData, unlinkedCode));
return unlinkedCode;
}
UnlinkedCodeBlockType* CodeCache::getCodeBlock(JSGlobalData& globalData, JSScope* scope, ExecutableType* executable, const SourceCode& source, JSParserStrictness strictness, DebuggerMode debuggerMode, ProfilerMode profilerMode, ParserError& error)
{
SourceCodeKey key = SourceCodeKey(source, String(), CacheTypes<UnlinkedCodeBlockType>::codeType, strictness);
CodeCacheMap::AddResult addResult = m_sourceCode.add(key, SourceCodeValue());
bool canCache = debuggerMode == DebuggerOff && profilerMode == ProfilerOff;
if (!addResult.isNewEntry && canCache) {
UnlinkedCodeBlockType* unlinkedCode = jsCast<UnlinkedCodeBlockType*>(addResult.iterator->value.cell.get());
unsigned firstLine = source.firstLine() + unlinkedCode->firstLine();
executable->recordParse(unlinkedCode->codeFeatures(), unlinkedCode->hasCapturedVariables(), firstLine, firstLine + unlinkedCode->lineCount());
return unlinkedCode;
}
typedef typename CacheTypes<UnlinkedCodeBlockType>::RootNode RootNode;
RefPtr<RootNode> rootNode = parse<RootNode>(&globalData, source, 0, Identifier(), strictness, JSParseProgramCode, error);
if (!rootNode) {
m_sourceCode.remove(addResult.iterator);
return 0;
}
executable->recordParse(rootNode->features(), rootNode->hasCapturedVariables(), rootNode->lineNo(), rootNode->lastLine());
UnlinkedCodeBlockType* unlinkedCode = UnlinkedCodeBlockType::create(&globalData, executable->executableInfo());
unlinkedCode->recordParse(rootNode->features(), rootNode->hasCapturedVariables(), rootNode->lineNo() - source.firstLine(), rootNode->lastLine() - rootNode->lineNo());
OwnPtr<BytecodeGenerator> generator(adoptPtr(new BytecodeGenerator(globalData, scope, rootNode.get(), unlinkedCode, debuggerMode, profilerMode)));
error = generator->generate();
rootNode->destroyData();
if (error.m_type != ParserError::ErrorNone) {
m_sourceCode.remove(addResult.iterator);
return 0;
}
if (!canCache) {
m_sourceCode.remove(addResult.iterator);
return unlinkedCode;
}
addResult.iterator->value = SourceCodeValue(globalData, unlinkedCode, m_sourceCode.age());
return unlinkedCode;
}
UnlinkedCodeBlockType* CodeCache::getGlobalCodeBlock(VM& vm, ExecutableType* executable, const SourceCode& source, JSParserBuiltinMode builtinMode, JSParserStrictMode strictMode, DebuggerMode debuggerMode, ParserError& error, EvalContextType evalContextType, const VariableEnvironment* variablesUnderTDZ)
{
DerivedContextType derivedContextType = executable->derivedContextType();
bool isArrowFunctionContext = executable->isArrowFunctionContext();
SourceCodeKey key(source, String(), CacheTypes<UnlinkedCodeBlockType>::codeType, builtinMode, strictMode, derivedContextType, evalContextType, isArrowFunctionContext);
SourceCodeValue* cache = m_sourceCode.findCacheAndUpdateAge(key);
// FIXME: We should do something smart for TDZ instead of just disabling caching.
// https://bugs.webkit.org/show_bug.cgi?id=154010
bool canCache = debuggerMode == DebuggerOff && !vm.typeProfiler() && !vm.controlFlowProfiler() && !variablesUnderTDZ->size();
if (cache && canCache) {
UnlinkedCodeBlockType* unlinkedCodeBlock = jsCast<UnlinkedCodeBlockType*>(cache->cell.get());
unsigned firstLine = source.firstLine() + unlinkedCodeBlock->firstLine();
unsigned lineCount = unlinkedCodeBlock->lineCount();
unsigned startColumn = unlinkedCodeBlock->startColumn() + source.startColumn();
bool endColumnIsOnStartLine = !lineCount;
unsigned endColumn = unlinkedCodeBlock->endColumn() + (endColumnIsOnStartLine ? startColumn : 1);
executable->recordParse(unlinkedCodeBlock->codeFeatures(), unlinkedCodeBlock->hasCapturedVariables(), firstLine, firstLine + lineCount, startColumn, endColumn);
source.provider()->setSourceURLDirective(unlinkedCodeBlock->sourceURLDirective());
source.provider()->setSourceMappingURLDirective(unlinkedCodeBlock->sourceMappingURLDirective());
return unlinkedCodeBlock;
}
typedef typename CacheTypes<UnlinkedCodeBlockType>::RootNode RootNode;
std::unique_ptr<RootNode> rootNode = parse<RootNode>(
&vm, source, Identifier(), builtinMode, strictMode, CacheTypes<UnlinkedCodeBlockType>::parseMode, SuperBinding::NotNeeded, error, nullptr, ConstructorKind::None, derivedContextType, evalContextType);
if (!rootNode)
return nullptr;
unsigned lineCount = rootNode->lastLine() - rootNode->firstLine();
unsigned startColumn = rootNode->startColumn() + 1;
bool endColumnIsOnStartLine = !lineCount;
unsigned unlinkedEndColumn = rootNode->endColumn();
unsigned endColumn = unlinkedEndColumn + (endColumnIsOnStartLine ? startColumn : 1);
unsigned arrowContextFeature = executable->isArrowFunctionContext() ? ArrowFunctionContextFeature : 0;
executable->recordParse(rootNode->features() | arrowContextFeature, rootNode->hasCapturedVariables(), rootNode->firstLine(), rootNode->lastLine(), startColumn, endColumn);
UnlinkedCodeBlockType* unlinkedCodeBlock = UnlinkedCodeBlockType::create(&vm, executable->executableInfo(), debuggerMode);
unlinkedCodeBlock->recordParse(rootNode->features(), rootNode->hasCapturedVariables(), rootNode->firstLine() - source.firstLine(), lineCount, unlinkedEndColumn);
unlinkedCodeBlock->setSourceURLDirective(source.provider()->sourceURL());
unlinkedCodeBlock->setSourceMappingURLDirective(source.provider()->sourceMappingURL());
error = BytecodeGenerator::generate(vm, rootNode.get(), unlinkedCodeBlock, debuggerMode, variablesUnderTDZ);
if (error.isValid())
return nullptr;
if (!canCache)
return unlinkedCodeBlock;
m_sourceCode.addCache(key, SourceCodeValue(vm, unlinkedCodeBlock, m_sourceCode.age()));
return unlinkedCodeBlock;
}
