JSObject* ProgramExecutable::initializeGlobalProperties(VM& vm, CallFrame* callFrame, JSScope* scope)
{
RELEASE_ASSERT(scope);
JSGlobalObject* globalObject = scope->globalObject();
RELEASE_ASSERT(globalObject);
ASSERT(&globalObject->vm() == &vm);
JSObject* exception = 0;
UnlinkedProgramCodeBlock* unlinkedCodeBlock = globalObject->createProgramCodeBlock(callFrame, this, &exception);
if (exception)
return exception;
m_unlinkedProgramCodeBlock.set(vm, this, unlinkedCodeBlock);
BatchedTransitionOptimizer optimizer(vm, globalObject);
for (size_t i = 0, numberOfFunctions = unlinkedCodeBlock->numberOfFunctionDecls(); i < numberOfFunctions; ++i) {
UnlinkedFunctionExecutable* unlinkedFunctionExecutable = unlinkedCodeBlock->functionDecl(i);
ASSERT(!unlinkedFunctionExecutable->name().isEmpty());
globalObject->addFunction(callFrame, unlinkedFunctionExecutable->name());
if (vm.typeProfiler() || vm.controlFlowProfiler()) {
vm.functionHasExecutedCache()->insertUnexecutedRange(sourceID(),
unlinkedFunctionExecutable->typeProfilingStartOffset(),
unlinkedFunctionExecutable->typeProfilingEndOffset());
}
}
const VariableEnvironment& variableDeclarations = unlinkedCodeBlock->variableDeclarations();
for (auto& entry : variableDeclarations) {
ASSERT(entry.value.isVar());
globalObject->addVar(callFrame, Identifier::fromUid(&vm, entry.key.get()));
}
return 0;
}
JSObject* ProgramExecutable::initializeGlobalProperties(VM& vm, CallFrame* callFrame, JSScope* scope)
{
RELEASE_ASSERT(scope);
JSGlobalObject* globalObject = scope->globalObject();
RELEASE_ASSERT(globalObject);
ASSERT(&globalObject->vm() == &vm);
JSObject* exception = 0;
UnlinkedProgramCodeBlock* unlinkedCodeBlock = globalObject->createProgramCodeBlock(callFrame, this, &exception);
if (exception)
return exception;
m_unlinkedProgramCodeBlock.set(vm, this, unlinkedCodeBlock);
BatchedTransitionOptimizer optimizer(vm, globalObject);
const UnlinkedProgramCodeBlock::VariableDeclations& variableDeclarations = unlinkedCodeBlock->variableDeclarations();
const UnlinkedProgramCodeBlock::FunctionDeclations& functionDeclarations = unlinkedCodeBlock->functionDeclarations();
for (size_t i = 0; i < functionDeclarations.size(); ++i) {
UnlinkedFunctionExecutable* unlinkedFunctionExecutable = functionDeclarations[i].second.get();
JSValue value = JSFunction::create(vm, unlinkedFunctionExecutable->link(vm, m_source, lineNo(), 0), scope);
globalObject->addFunction(callFrame, functionDeclarations[i].first, value);
}
for (size_t i = 0; i < variableDeclarations.size(); ++i) {
if (variableDeclarations[i].second & DeclarationStacks::IsConstant)
globalObject->addConst(callFrame, variableDeclarations[i].first);
else
globalObject->addVar(callFrame, variableDeclarations[i].first);
}
return 0;
}
JSObject* ProgramExecutable::initializeGlobalProperties(JSGlobalData& globalData, CallFrame* callFrame, JSScope* scope)
{
ASSERT(scope);
JSGlobalObject* globalObject = scope->globalObject();
ASSERT(globalObject);
ASSERT(&globalObject->globalData() == &globalData);
JSObject* exception = 0;
UnlinkedProgramCodeBlock* unlinkedCode = globalObject->createProgramCodeBlock(callFrame, this, &exception);
if (exception)
return exception;
m_unlinkedProgramCodeBlock.set(globalData, this, unlinkedCode);
BatchedTransitionOptimizer optimizer(globalData, globalObject);
const UnlinkedProgramCodeBlock::VariableDeclations& variableDeclarations = unlinkedCode->variableDeclarations();
const UnlinkedProgramCodeBlock::FunctionDeclations& functionDeclarations = unlinkedCode->functionDeclarations();
size_t newGlobals = variableDeclarations.size() + functionDeclarations.size();
if (!newGlobals)
return 0;
globalObject->addRegisters(newGlobals);
CallFrame* globalExec = globalObject->globalExec();
for (size_t i = 0; i < functionDeclarations.size(); ++i) {
bool propertyDidExist = globalObject->removeDirect(globalData, functionDeclarations[i].first); // Newly declared functions overwrite existing properties.
UnlinkedFunctionExecutable* unlinkedFunctionExecutable = functionDeclarations[i].second.get();
JSValue value = JSFunction::create(globalExec, unlinkedFunctionExecutable->link(globalData, m_source, lineNo(), 0), scope);
int index = addGlobalVar(globalObject, functionDeclarations[i].first, IsVariable,
!propertyDidExist ? IsFunctionToSpecialize : NotFunctionOrNotSpecializable);
globalObject->registerAt(index).set(globalData, globalObject, value);
}
for (size_t i = 0; i < variableDeclarations.size(); ++i) {
if (globalObject->hasProperty(globalExec, variableDeclarations[i].first))
continue;
addGlobalVar(globalObject, variableDeclarations[i].first,
(variableDeclarations[i].second & DeclarationStacks::IsConstant) ? IsConstant : IsVariable,
NotFunctionOrNotSpecializable);
}
return 0;
}
JSObject* ProgramExecutable::initializeGlobalProperties(VM& vm, CallFrame* callFrame, JSScope* scope)
{
RELEASE_ASSERT(scope);
JSGlobalObject* globalObject = scope->globalObject();
RELEASE_ASSERT(globalObject);
ASSERT(&globalObject->vm() == &vm);
JSObject* exception = 0;
UnlinkedProgramCodeBlock* unlinkedCodeBlock = globalObject->createProgramCodeBlock(callFrame, this, &exception);
if (exception)
return exception;
JSGlobalLexicalEnvironment* globalLexicalEnvironment = globalObject->globalLexicalEnvironment();
const VariableEnvironment& variableDeclarations = unlinkedCodeBlock->variableDeclarations();
const VariableEnvironment& lexicalDeclarations = unlinkedCodeBlock->lexicalDeclarations();
// The ES6 spec says that no vars/global properties/let/const can be duplicated in the global scope.
// This carried out section 15.1.8 of the ES6 spec: http://www.ecma-international.org/ecma-262/6.0/index.html#sec-globaldeclarationinstantiation
{
ExecState* exec = globalObject->globalExec();
// Check for intersection of "var" and "let"/"const"/"class"
for (auto& entry : lexicalDeclarations) {
if (variableDeclarations.contains(entry.key))
return createSyntaxError(exec, makeString("Can't create duplicate variable: '", String(entry.key.get()), "'"));
}
// Check if any new "let"/"const"/"class" will shadow any pre-existing global property names, or "var"/"let"/"const" variables.
// It's an error to introduce a shadow.
for (auto& entry : lexicalDeclarations) {
if (globalObject->hasProperty(exec, entry.key.get()))
return createSyntaxError(exec, makeString("Can't create duplicate variable that shadows a global property: '", String(entry.key.get()), "'"));
if (globalLexicalEnvironment->hasProperty(exec, entry.key.get()))
return createSyntaxError(exec, makeString("Can't create duplicate variable: '", String(entry.key.get()), "'"));
}
// Check if any new "var"s will shadow any previous "let"/"const"/"class" names.
// It's an error to introduce a shadow.
if (!globalLexicalEnvironment->isEmpty()) {
for (auto& entry : variableDeclarations) {
if (globalLexicalEnvironment->hasProperty(exec, entry.key.get()))
return createSyntaxError(exec, makeString("Can't create duplicate variable: '", String(entry.key.get()), "'"));
}
}
}
m_unlinkedProgramCodeBlock.set(vm, this, unlinkedCodeBlock);
BatchedTransitionOptimizer optimizer(vm, globalObject);
for (size_t i = 0, numberOfFunctions = unlinkedCodeBlock->numberOfFunctionDecls(); i < numberOfFunctions; ++i) {
UnlinkedFunctionExecutable* unlinkedFunctionExecutable = unlinkedCodeBlock->functionDecl(i);
ASSERT(!unlinkedFunctionExecutable->name().isEmpty());
globalObject->addFunction(callFrame, unlinkedFunctionExecutable->name());
if (vm.typeProfiler() || vm.controlFlowProfiler()) {
vm.functionHasExecutedCache()->insertUnexecutedRange(sourceID(),
unlinkedFunctionExecutable->typeProfilingStartOffset(),
unlinkedFunctionExecutable->typeProfilingEndOffset());
}
}
for (auto& entry : variableDeclarations) {
ASSERT(entry.value.isVar());
globalObject->addVar(callFrame, Identifier::fromUid(&vm, entry.key.get()));
}
{
JSGlobalLexicalEnvironment* globalLexicalEnvironment = jsCast<JSGlobalLexicalEnvironment*>(globalObject->globalScope());
SymbolTable* symbolTable = globalLexicalEnvironment->symbolTable();
ConcurrentJITLocker locker(symbolTable->m_lock);
for (auto& entry : lexicalDeclarations) {
ScopeOffset offset = symbolTable->takeNextScopeOffset(locker);
SymbolTableEntry newEntry(VarOffset(offset), entry.value.isConst() ? ReadOnly : 0);
newEntry.prepareToWatch();
symbolTable->add(locker, entry.key.get(), newEntry);
ScopeOffset offsetForAssert = globalLexicalEnvironment->addVariables(1, jsTDZValue());
RELEASE_ASSERT(offsetForAssert == offset);
}
}
return 0;
}