mirror of
https://github.com/Samsung/escargot.git
synced 2026-06-22 10:01:50 +00:00
6d4ed41488
2. If RegExp's source needs escapeSlash process, it should count the number of leading backSlashs Signed-off-by: Saebom Kim sae-bom.kim@samsung.com
406 lines
15 KiB
C++
406 lines
15 KiB
C++
/*
|
|
* Copyright (c) 2016-present Samsung Electronics Co., Ltd
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "Escargot.h"
|
|
#include "ArrayObject.h"
|
|
#include "Context.h"
|
|
#include "VMInstance.h"
|
|
|
|
namespace Escargot {
|
|
|
|
size_t g_arrayObjectTag;
|
|
|
|
ArrayObject::ArrayObject(ExecutionState& state)
|
|
: Object(state, ESCARGOT_OBJECT_BUILTIN_PROPERTY_NUMBER + 1, true)
|
|
{
|
|
m_structure = state.context()->defaultStructureForArrayObject();
|
|
m_values[ESCARGOT_OBJECT_BUILTIN_PROPERTY_NUMBER] = Value(0);
|
|
setPrototype(state, state.context()->globalObject()->arrayPrototype());
|
|
|
|
if (UNLIKELY(state.context()->vmInstance()->didSomePrototypeObjectDefineIndexedProperty())) {
|
|
ensureObjectRareData()->m_isFastModeArrayObject = false;
|
|
}
|
|
}
|
|
|
|
ObjectGetResult ArrayObject::getOwnProperty(ExecutionState& state, const ObjectPropertyName& P) ESCARGOT_OBJECT_SUBCLASS_MUST_REDEFINE
|
|
{
|
|
ObjectGetResult v = getFastModeValue(state, P);
|
|
if (LIKELY(v.hasValue())) {
|
|
return v;
|
|
} else {
|
|
return Object::getOwnProperty(state, P);
|
|
}
|
|
}
|
|
|
|
bool ArrayObject::defineOwnProperty(ExecutionState& state, const ObjectPropertyName& P, const ObjectPropertyDescriptor& desc) ESCARGOT_OBJECT_SUBCLASS_MUST_REDEFINE
|
|
{
|
|
if (LIKELY(setFastModeValue(state, P, desc))) {
|
|
return true;
|
|
}
|
|
|
|
uint64_t idx;
|
|
if (LIKELY(P.isUIntType())) {
|
|
idx = P.uintValue();
|
|
} else {
|
|
idx = P.string(state)->tryToUseAsArrayIndex();
|
|
}
|
|
auto oldLenDesc = structure()->readProperty(state, (size_t)0);
|
|
uint32_t oldLen = getArrayLength(state);
|
|
|
|
if (idx != Value::InvalidArrayIndexValue) {
|
|
if ((idx >= oldLen) && !oldLenDesc.m_descriptor.isWritable())
|
|
return false;
|
|
bool succeeded = Object::defineOwnProperty(state, P, desc);
|
|
if (!succeeded)
|
|
return false;
|
|
if (idx >= oldLen && ((idx + 1) <= Value::InvalidArrayIndexValue)) {
|
|
return setArrayLength(state, idx + 1);
|
|
}
|
|
return true;
|
|
} else if (P.string(state)->equals(state.context()->staticStrings().length.string())) {
|
|
// See 3.a ~ 3.n on http://www.ecma-international.org/ecma-262/5.1/#sec-15.4.5.1
|
|
if (desc.isValuePresent()) {
|
|
ObjectPropertyDescriptor newLenDesc(desc);
|
|
|
|
uint32_t newLen = desc.value().toLength(state);
|
|
bool newWritable = false;
|
|
|
|
if (newLen != desc.value().toNumber(state)) {
|
|
ErrorObject::throwBuiltinError(state, ErrorObject::RangeError, errorMessage_GlobalObject_InvalidArrayLength);
|
|
}
|
|
|
|
newLenDesc.setValue(Value(newLen));
|
|
|
|
if (newLen >= oldLen) {
|
|
return Object::defineOwnProperty(state, P, newLenDesc);
|
|
}
|
|
|
|
if (!(oldLenDesc.m_descriptor.isWritable())) {
|
|
return false;
|
|
}
|
|
|
|
if (!(newLenDesc.isWritablePresent()) || newLenDesc.isWritable()) {
|
|
newWritable = true;
|
|
} else {
|
|
// In this case, even if an element of this array cannot be deleted,
|
|
// it should not throw any error.
|
|
// Object::defineOwnProperty() below can make call to ArrayObject::setArrayLength()
|
|
// so, we set this variable to give the information to ArrayObject::setArrayLength()
|
|
// not to throw error.
|
|
ensureObjectRareData()->m_isInArrayObjectDefineOwnProperty = true;
|
|
newWritable = false;
|
|
newLenDesc.setWritable(true);
|
|
}
|
|
|
|
if (!(Object::defineOwnProperty(state, P, newLenDesc))) {
|
|
if (isInArrayObjectDefineOwnProperty()) {
|
|
ASSERT(rareData());
|
|
rareData()->m_isInArrayObjectDefineOwnProperty = false;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
while (newLen < oldLen) {
|
|
oldLen--;
|
|
|
|
bool deleteSucceeded = Object::deleteOwnProperty(state, ObjectPropertyName(state, Value(oldLen).toString(state)));
|
|
if (!deleteSucceeded) {
|
|
newLenDesc.setValue(Value(oldLen + 1));
|
|
if (!newWritable) {
|
|
newLenDesc.setWritable(false);
|
|
}
|
|
Object::defineOwnProperty(state, P, newLenDesc);
|
|
if (isInArrayObjectDefineOwnProperty()) {
|
|
ASSERT(rareData());
|
|
rareData()->m_isInArrayObjectDefineOwnProperty = false;
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (!newWritable) {
|
|
ObjectPropertyDescriptor tmpDesc(ObjectPropertyDescriptor::NonWritablePresent, true);
|
|
Object::defineOwnProperty(state, P, tmpDesc);
|
|
}
|
|
|
|
if (isInArrayObjectDefineOwnProperty()) {
|
|
ASSERT(rareData());
|
|
rareData()->m_isInArrayObjectDefineOwnProperty = false;
|
|
}
|
|
return true;
|
|
} else {
|
|
return Object::defineOwnProperty(state, P, desc);
|
|
}
|
|
}
|
|
|
|
return Object::defineOwnProperty(state, P, desc);
|
|
}
|
|
|
|
bool ArrayObject::deleteOwnProperty(ExecutionState& state, const ObjectPropertyName& P) ESCARGOT_OBJECT_SUBCLASS_MUST_REDEFINE
|
|
{
|
|
if (LIKELY(isFastModeArray())) {
|
|
uint64_t idx;
|
|
if (LIKELY(P.isUIntType())) {
|
|
idx = P.uintValue();
|
|
} else {
|
|
idx = P.string(state)->tryToUseAsArrayIndex();
|
|
}
|
|
if (LIKELY(idx != Value::InvalidArrayIndexValue)) {
|
|
uint64_t len = getArrayLength(state);
|
|
if (idx < len) {
|
|
m_fastModeData[idx] = Value(Value::EmptyValue);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return Object::deleteOwnProperty(state, P);
|
|
}
|
|
|
|
void ArrayObject::enumeration(ExecutionState& state, bool (*callback)(ExecutionState& state, Object* self, const ObjectPropertyName&, const ObjectStructurePropertyDescriptor& desc, void* data), void* data) ESCARGOT_OBJECT_SUBCLASS_MUST_REDEFINE
|
|
{
|
|
if (LIKELY(isFastModeArray())) {
|
|
size_t len = getArrayLength(state);
|
|
for (size_t i = 0; i < len; i++) {
|
|
ASSERT(isFastModeArray());
|
|
if (m_fastModeData[i].isEmpty())
|
|
continue;
|
|
if (!callback(state, this, ObjectPropertyName(state, Value(i)), ObjectStructurePropertyDescriptor::createDataDescriptor(ObjectStructurePropertyDescriptor::AllPresent), data)) {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
Object::enumeration(state, callback, data);
|
|
}
|
|
|
|
void ArrayObject::sort(ExecutionState& state, std::function<bool(const Value& a, const Value& b)> comp)
|
|
{
|
|
if (isFastModeArray()) {
|
|
if (getArrayLength(state)) {
|
|
std::vector<Value, GCUtil::gc_malloc_ignore_off_page_allocator<Value>> values(&m_fastModeData[0], m_fastModeData.data() + getArrayLength(state));
|
|
std::sort(values.begin(), values.end(), comp);
|
|
for (size_t i = 0; i < values.size(); i++) {
|
|
m_fastModeData[i] = values[i];
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
Object::sort(state, comp);
|
|
}
|
|
|
|
void* ArrayObject::operator new(size_t size)
|
|
{
|
|
return CustomAllocator<ArrayObject>().allocate(1);
|
|
}
|
|
|
|
void ArrayObject::iterateArrays(ExecutionState& state, HeapObjectIteratorCallback callback)
|
|
{
|
|
iterateSpecificKindOfObject(state, HeapObjectKind::ArrayObjectKind, callback);
|
|
}
|
|
|
|
void ArrayObject::convertIntoNonFastMode(ExecutionState& state)
|
|
{
|
|
if (!isFastModeArray())
|
|
return;
|
|
|
|
if (!structure()->isStructureWithFastAccess()) {
|
|
m_structure = structure()->convertToWithFastAccess(state);
|
|
}
|
|
|
|
ensureObjectRareData()->m_isFastModeArrayObject = false;
|
|
|
|
auto length = getArrayLength(state);
|
|
for (size_t i = 0; i < length; i++) {
|
|
if (!m_fastModeData[i].isEmpty()) {
|
|
defineOwnPropertyThrowsExceptionWhenStrictMode(state, ObjectPropertyName(state, Value(i)), ObjectPropertyDescriptor(m_fastModeData[i], ObjectPropertyDescriptor::AllPresent));
|
|
}
|
|
}
|
|
|
|
m_fastModeData.clear();
|
|
}
|
|
|
|
bool ArrayObject::setArrayLength(ExecutionState& state, const uint64_t& newLength)
|
|
{
|
|
ASSERT(isExtensible() || newLength <= getArrayLength(state));
|
|
|
|
if (UNLIKELY(isFastModeArray() && (newLength > ESCARGOT_ARRAY_NON_FASTMODE_MIN_SIZE))) {
|
|
uint32_t orgLength = getArrayLength(state);
|
|
if (newLength > orgLength) {
|
|
if ((newLength - orgLength > ESCARGOT_ARRAY_NON_FASTMODE_START_MIN_GAP)) {
|
|
convertIntoNonFastMode(state);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (LIKELY(isFastModeArray())) {
|
|
auto oldSize = getArrayLength(state);
|
|
auto oldLenDesc = structure()->readProperty(state, (size_t)0);
|
|
m_values[ESCARGOT_OBJECT_BUILTIN_PROPERTY_NUMBER] = Value(newLength);
|
|
m_fastModeData.resize(oldSize, newLength, Value(Value::EmptyValue));
|
|
|
|
if (UNLIKELY(!oldLenDesc.m_descriptor.isWritable())) {
|
|
convertIntoNonFastMode(state);
|
|
}
|
|
return true;
|
|
} else {
|
|
if (!isInArrayObjectDefineOwnProperty()) {
|
|
auto oldLenDesc = structure()->readProperty(state, (size_t)0);
|
|
|
|
int64_t oldLen = length(state);
|
|
int64_t newLen = newLength;
|
|
|
|
while (newLen < oldLen) {
|
|
oldLen--;
|
|
ObjectPropertyName key(state, Value(oldLen));
|
|
|
|
if (!getOwnProperty(state, key).hasValue()) {
|
|
double result;
|
|
Object::nextIndexBackward(state, this, oldLen, -1, false, result);
|
|
oldLen = result;
|
|
|
|
if (oldLen < newLen) {
|
|
break;
|
|
}
|
|
|
|
key = ObjectPropertyName(state, Value(oldLen));
|
|
}
|
|
|
|
bool deleteSucceeded = deleteOwnProperty(state, key);
|
|
if (!deleteSucceeded) {
|
|
m_values[ESCARGOT_OBJECT_BUILTIN_PROPERTY_NUMBER] = Value(oldLen + 1);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
m_values[ESCARGOT_OBJECT_BUILTIN_PROPERTY_NUMBER] = Value(newLength);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
ObjectGetResult ArrayObject::getFastModeValue(ExecutionState& state, const ObjectPropertyName& P)
|
|
{
|
|
if (LIKELY(isFastModeArray())) {
|
|
uint64_t idx;
|
|
if (LIKELY(P.isUIntType())) {
|
|
idx = P.uintValue();
|
|
} else {
|
|
idx = P.string(state)->tryToUseAsArrayIndex();
|
|
}
|
|
if (LIKELY(idx != Value::InvalidArrayIndexValue)) {
|
|
if (LIKELY(idx < getArrayLength(state))) {
|
|
Value v = m_fastModeData[idx];
|
|
if (LIKELY(!v.isEmpty())) {
|
|
return ObjectGetResult(v, true, true, true);
|
|
}
|
|
return ObjectGetResult();
|
|
}
|
|
}
|
|
}
|
|
return ObjectGetResult();
|
|
}
|
|
|
|
bool ArrayObject::setFastModeValue(ExecutionState& state, const ObjectPropertyName& P, const ObjectPropertyDescriptor& desc)
|
|
{
|
|
if (LIKELY(isFastModeArray())) {
|
|
uint64_t idx;
|
|
if (LIKELY(P.isUIntType())) {
|
|
idx = P.uintValue();
|
|
} else {
|
|
idx = P.string(state)->tryToUseAsArrayIndex();
|
|
}
|
|
if (LIKELY(idx != Value::InvalidArrayIndexValue)) {
|
|
uint32_t len = getArrayLength(state);
|
|
if (len > idx && !m_fastModeData[idx].isEmpty()) {
|
|
// Non-empty slot of fast-mode array always has {writable:true, enumerable:true, configurable:true}.
|
|
// So, when new desciptor is not present, keep {w:true, e:true, c:true}
|
|
if (UNLIKELY(!(desc.isValuePresentAlone() || desc.isDataWritableEnumerableConfigurable()))) {
|
|
convertIntoNonFastMode(state);
|
|
return false;
|
|
}
|
|
} else if (UNLIKELY(!desc.isDataWritableEnumerableConfigurable())) {
|
|
// In case of empty slot property or over-lengthed property,
|
|
// when new desciptor is not present, keep {w:false, e:false, c:false}
|
|
convertIntoNonFastMode(state);
|
|
return false;
|
|
}
|
|
|
|
if (!desc.isValuePresent()) {
|
|
convertIntoNonFastMode(state);
|
|
return false;
|
|
}
|
|
|
|
if (UNLIKELY(len <= idx)) {
|
|
if (UNLIKELY(!isExtensible())) {
|
|
return false;
|
|
}
|
|
if (UNLIKELY(!setArrayLength(state, idx + 1)) || UNLIKELY(!isFastModeArray())) {
|
|
return false;
|
|
}
|
|
}
|
|
m_fastModeData[idx] = desc.value();
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
ObjectGetResult ArrayObject::getIndexedProperty(ExecutionState& state, const Value& property)
|
|
{
|
|
if (LIKELY(isFastModeArray())) {
|
|
uint64_t idx;
|
|
if (LIKELY(property.isUInt32())) {
|
|
idx = property.asUInt32();
|
|
} else {
|
|
idx = property.toString(state)->tryToUseAsArrayIndex();
|
|
}
|
|
if (LIKELY(idx != Value::InvalidArrayIndexValue)) {
|
|
if (LIKELY(idx < getArrayLength(state))) {
|
|
Value v = m_fastModeData[idx];
|
|
if (LIKELY(!v.isEmpty())) {
|
|
return ObjectGetResult(v, true, true, true);
|
|
}
|
|
return get(state, ObjectPropertyName(state, property));
|
|
}
|
|
}
|
|
}
|
|
return get(state, ObjectPropertyName(state, property));
|
|
}
|
|
|
|
bool ArrayObject::setIndexedProperty(ExecutionState& state, const Value& property, const Value& value)
|
|
{
|
|
if (LIKELY(isFastModeArray())) {
|
|
uint64_t idx;
|
|
if (LIKELY(property.isUInt32())) {
|
|
idx = property.asUInt32();
|
|
} else {
|
|
idx = property.toString(state)->tryToUseAsArrayIndex();
|
|
}
|
|
if (LIKELY(idx != Value::InvalidArrayIndexValue)) {
|
|
uint32_t len = getArrayLength(state);
|
|
if (UNLIKELY(len <= idx)) {
|
|
if (UNLIKELY(!isExtensible())) {
|
|
return false;
|
|
}
|
|
if (UNLIKELY(!setArrayLength(state, idx + 1)) || UNLIKELY(!isFastModeArray())) {
|
|
return set(state, ObjectPropertyName(state, property), value, this);
|
|
}
|
|
}
|
|
m_fastModeData[idx] = value;
|
|
return true;
|
|
}
|
|
}
|
|
return set(state, ObjectPropertyName(state, property), value, this);
|
|
}
|
|
}
|