ErrorConstructor.cpp [plain text]
#include "config.h"
#include "ErrorConstructor.h"
#include "ErrorPrototype.h"
#include "JSCInlines.h"
namespace JSC {
STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(ErrorConstructor);
const ClassInfo ErrorConstructor::s_info = { "Function", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(ErrorConstructor) };
static JSC_DECLARE_HOST_FUNCTION(callErrorConstructor);
static JSC_DECLARE_HOST_FUNCTION(constructErrorConstructor);
ErrorConstructor::ErrorConstructor(VM& vm, Structure* structure)
: InternalFunction(vm, structure, callErrorConstructor, constructErrorConstructor)
{
}
void ErrorConstructor::finishCreation(VM& vm, ErrorPrototype* errorPrototype)
{
Base::finishCreation(vm, 1, vm.propertyNames->Error.string(), PropertyAdditionMode::WithoutStructureTransition);
putDirectWithoutTransition(vm, vm.propertyNames->prototype, errorPrototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, vm.propertyNames->stackTraceLimit, jsNumber(globalObject()->stackTraceLimit().valueOr(Options::defaultErrorStackTraceLimit())), static_cast<unsigned>(PropertyAttribute::None));
}
JSC_DEFINE_HOST_FUNCTION(constructErrorConstructor, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue message = callFrame->argument(0);
JSObject* newTarget = asObject(callFrame->newTarget());
Structure* errorStructure = newTarget == callFrame->jsCallee()
? globalObject->errorStructure()
: InternalFunction::createSubclassStructure(globalObject, newTarget, getFunctionRealm(vm, newTarget)->errorStructure());
RETURN_IF_EXCEPTION(scope, { });
RELEASE_AND_RETURN(scope, JSValue::encode(ErrorInstance::create(globalObject, errorStructure, message, nullptr, TypeNothing, false)));
}
JSC_DEFINE_HOST_FUNCTION(callErrorConstructor, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
JSValue message = callFrame->argument(0);
Structure* errorStructure = globalObject->errorStructure();
return JSValue::encode(ErrorInstance::create(globalObject, errorStructure, message, nullptr, TypeNothing, false));
}
bool ErrorConstructor::put(JSCell* cell, JSGlobalObject* globalObject, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
{
VM& vm = globalObject->vm();
ErrorConstructor* thisObject = jsCast<ErrorConstructor*>(cell);
if (propertyName == vm.propertyNames->stackTraceLimit) {
if (value.isNumber()) {
double effectiveLimit = value.asNumber();
effectiveLimit = std::max(0., effectiveLimit);
effectiveLimit = std::min(effectiveLimit, static_cast<double>(std::numeric_limits<unsigned>::max()));
thisObject->globalObject()->setStackTraceLimit(static_cast<unsigned>(effectiveLimit));
} else
thisObject->globalObject()->setStackTraceLimit(WTF::nullopt);
}
return Base::put(thisObject, globalObject, propertyName, value, slot);
}
bool ErrorConstructor::deleteProperty(JSCell* cell, JSGlobalObject* globalObject, PropertyName propertyName, DeletePropertySlot& slot)
{
VM& vm = globalObject->vm();
ErrorConstructor* thisObject = jsCast<ErrorConstructor*>(cell);
if (propertyName == vm.propertyNames->stackTraceLimit)
thisObject->globalObject()->setStackTraceLimit(WTF::nullopt);
return Base::deleteProperty(thisObject, globalObject, propertyName, slot);
}
}