ArrayConstructor.cpp [plain text]
#include "config.h"
#include "ArrayConstructor.h"
#include "ArrayPrototype.h"
#include "Error.h"
#include "JSArray.h"
#include "JSFunction.h"
#include "Lookup.h"
#include "PrototypeFunction.h"
namespace JSC {
ASSERT_CLASS_FITS_IN_CELL(ArrayConstructor);
static JSValue JSC_HOST_CALL arrayConstructorIsArray(ExecState*, JSObject*, JSValue, const ArgList&);
ArrayConstructor::ArrayConstructor(ExecState* exec, NonNullPassRefPtr<Structure> structure, ArrayPrototype* arrayPrototype, Structure* prototypeFunctionStructure)
: InternalFunction(&exec->globalData(), structure, Identifier(exec, arrayPrototype->classInfo()->className))
{
putDirectWithoutTransition(exec->propertyNames().prototype, arrayPrototype, DontEnum | DontDelete | ReadOnly);
putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 1), ReadOnly | DontEnum | DontDelete);
putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 1, exec->propertyNames().isArray, arrayConstructorIsArray), DontEnum);
}
static inline JSObject* constructArrayWithSizeQuirk(ExecState* exec, const ArgList& args)
{
if (args.size() == 1 && args.at(0).isNumber()) {
uint32_t n = args.at(0).toUInt32(exec);
if (n != args.at(0).toNumber(exec))
return throwError(exec, RangeError, "Array size is not a small enough positive integer.");
return new (exec) JSArray(exec->lexicalGlobalObject()->arrayStructure(), n);
}
return new (exec) JSArray(exec->lexicalGlobalObject()->arrayStructure(), args);
}
static JSObject* constructWithArrayConstructor(ExecState* exec, JSObject*, const ArgList& args)
{
return constructArrayWithSizeQuirk(exec, args);
}
ConstructType ArrayConstructor::getConstructData(ConstructData& constructData)
{
constructData.native.function = constructWithArrayConstructor;
return ConstructTypeHost;
}
static JSValue JSC_HOST_CALL callArrayConstructor(ExecState* exec, JSObject*, JSValue, const ArgList& args)
{
return constructArrayWithSizeQuirk(exec, args);
}
CallType ArrayConstructor::getCallData(CallData& callData)
{
callData.native.function = callArrayConstructor;
return CallTypeHost;
}
JSValue JSC_HOST_CALL arrayConstructorIsArray(ExecState*, JSObject*, JSValue, const ArgList& args)
{
return jsBoolean(args.at(0).inherits(&JSArray::info));
}
}