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https://gitee.com/openharmony/arkcompiler_ets_runtime
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e339c93829
Support Stringify a TypedArray object issue:https://gitee.com/openharmony/ark_js_runtime/issues/I53K0R Signed-off-by: scw <suchongwei@huawei.com>
469 lines
21 KiB
C++
469 lines
21 KiB
C++
/*
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* Copyright (c) 2021 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "ecmascript/js_array.h"
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#include "ecmascript/accessor_data.h"
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#include "ecmascript/base/array_helper.h"
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#include "ecmascript/ecma_vm.h"
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#include "ecmascript/global_env.h"
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#include "ecmascript/js_tagged_value-inl.h"
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#include "ecmascript/object_factory.h"
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#include "interpreter/fast_runtime_stub-inl.h"
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namespace panda::ecmascript {
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JSTaggedValue JSArray::LengthGetter([[maybe_unused]] JSThread *thread, const JSHandle<JSObject> &self)
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{
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return JSArray::Cast(*self)->GetLength();
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}
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bool JSArray::LengthSetter(JSThread *thread, const JSHandle<JSObject> &self, const JSHandle<JSTaggedValue> &value,
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bool mayThrow)
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{
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uint32_t newLen = 0;
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if (!JSTaggedValue::ToArrayLength(thread, value, &newLen) && mayThrow) {
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RETURN_VALUE_IF_ABRUPT_COMPLETION(thread, false);
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}
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if (!IsArrayLengthWritable(thread, self)) {
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if (mayThrow) {
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THROW_TYPE_ERROR_AND_RETURN(thread, "Cannot assign to read only property", false);
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}
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return false;
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}
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uint32_t oldLen = JSArray::Cast(*self)->GetArrayLength();
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JSArray::SetCapacity(thread, self, oldLen, newLen);
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return true;
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}
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JSHandle<JSTaggedValue> JSArray::ArrayCreate(JSThread *thread, JSTaggedNumber length)
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{
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JSHandle<GlobalEnv> env = thread->GetEcmaVM()->GetGlobalEnv();
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JSHandle<JSTaggedValue> arrayFunction = env->GetArrayFunction();
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return JSArray::ArrayCreate(thread, length, arrayFunction);
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}
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// 9.4.2.2 ArrayCreate(length, proto)
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JSHandle<JSTaggedValue> JSArray::ArrayCreate(JSThread *thread, JSTaggedNumber length,
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const JSHandle<JSTaggedValue> &newTarget)
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{
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ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
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// Assert: length is an integer Number ≥ 0.
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ASSERT_PRINT(length.IsInteger() && length.GetNumber() >= 0, "length must be positive integer");
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// 2. If length is −0, let length be +0.
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double arrayLength = JSTaggedValue::ToInteger(thread, JSHandle<JSTaggedValue>(thread, length)).GetDouble();
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if (arrayLength > MAX_ARRAY_INDEX) {
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JSHandle<JSTaggedValue> exception(thread, JSTaggedValue::Exception());
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THROW_RANGE_ERROR_AND_RETURN(thread, "array length must less than 2^32 - 1", exception);
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}
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uint32_t normalArrayLength = length.ToUint32();
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// 8. Set the [[Prototype]] internal slot of A to proto.
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JSHandle<GlobalEnv> env = thread->GetEcmaVM()->GetGlobalEnv();
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JSHandle<JSTaggedValue> arrayFunc = env->GetArrayFunction();
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JSHandle<JSObject> obj = factory->NewJSObjectByConstructor(JSHandle<JSFunction>(arrayFunc), newTarget);
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// 9. Set the [[Extensible]] internal slot of A to true.
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obj->GetJSHClass()->SetExtensible(true);
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// 10. Perform OrdinaryDefineOwnProperty(A, "length", PropertyDescriptor{[[Value]]: length, [[Writable]]:
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// true, [[Enumerable]]: false, [[Configurable]]: false}).
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JSArray::Cast(*obj)->SetArrayLength(thread, normalArrayLength);
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return JSHandle<JSTaggedValue>(obj);
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}
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// 9.4.2.3 ArraySpeciesCreate(originalArray, length)
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JSTaggedValue JSArray::ArraySpeciesCreate(JSThread *thread, const JSHandle<JSObject> &originalArray,
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JSTaggedNumber length)
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{
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JSHandle<GlobalEnv> env = thread->GetEcmaVM()->GetGlobalEnv();
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const GlobalEnvConstants *globalConst = thread->GlobalConstants();
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// Assert: length is an integer Number ≥ 0.
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ASSERT_PRINT(length.IsInteger() && length.GetNumber() >= 0, "length must be positive integer");
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// If length is −0, let length be +0.
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double arrayLength = JSTaggedValue::ToInteger(thread, JSHandle<JSTaggedValue>(thread, length)).GetDouble();
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if (arrayLength == -0) {
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arrayLength = +0;
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}
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// Let C be undefined.
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// Let isArray be IsArray(originalArray).
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JSHandle<JSTaggedValue> originalValue(originalArray);
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bool isArray = originalValue->IsArray(thread);
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// ReturnIfAbrupt(isArray).
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RETURN_EXCEPTION_IF_ABRUPT_COMPLETION(thread);
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// If isArray is true, then
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JSHandle<JSTaggedValue> constructor(thread, JSTaggedValue::Undefined());
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if (isArray) {
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// Let C be Get(originalArray, "constructor").
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auto *hclass = originalArray->GetJSHClass();
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if (hclass->IsJSArray() && !hclass->HasConstructor()) {
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return JSArray::ArrayCreate(thread, length).GetTaggedValue();
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}
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JSHandle<JSTaggedValue> constructorKey = globalConst->GetHandledConstructorString();
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constructor = JSTaggedValue::GetProperty(thread, originalValue, constructorKey).GetValue();
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// ReturnIfAbrupt(C).
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RETURN_EXCEPTION_IF_ABRUPT_COMPLETION(thread);
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// If IsConstructor(C) is true, then
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if (constructor->IsConstructor()) {
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// Let thisRealm be the running execution context’s Realm.
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// Let realmC be GetFunctionRealm(C).
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JSHandle<GlobalEnv> realmC = JSObject::GetFunctionRealm(thread, constructor);
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// ReturnIfAbrupt(realmC).
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RETURN_EXCEPTION_IF_ABRUPT_COMPLETION(thread);
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// If thisRealm and realmC are not the same Realm Record, then
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if (*realmC != *env) {
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JSTaggedValue realmArrayConstructor = realmC->GetArrayFunction().GetTaggedValue();
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// If SameValue(C, realmC.[[intrinsics]].[[%Array%]]) is true, let C be undefined.
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if (JSTaggedValue::SameValue(constructor.GetTaggedValue(), realmArrayConstructor)) {
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return JSArray::ArrayCreate(thread, length).GetTaggedValue();
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}
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}
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}
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// If Type(C) is Object, then
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if (constructor->IsECMAObject()) {
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// Let C be Get(C, @@species).
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JSHandle<JSTaggedValue> speciesSymbol = env->GetSpeciesSymbol();
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constructor = JSTaggedValue::GetProperty(thread, constructor, speciesSymbol).GetValue();
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// ReturnIfAbrupt(C).
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RETURN_EXCEPTION_IF_ABRUPT_COMPLETION(thread);
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// If C is null, let C be undefined.
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if (constructor->IsNull()) {
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return JSArray::ArrayCreate(thread, length).GetTaggedValue();
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}
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}
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}
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// If C is undefined, return ArrayCreate(length).
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if (constructor->IsUndefined()) {
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return JSArray::ArrayCreate(thread, length).GetTaggedValue();
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}
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// If IsConstructor(C) is false, throw a TypeError exception.
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if (!constructor->IsConstructor()) {
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THROW_TYPE_ERROR_AND_RETURN(thread, "Not a constructor", JSTaggedValue::Exception());
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}
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// Return Construct(C, «length»).
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JSHandle<JSTaggedValue> undefined = thread->GlobalConstants()->GetHandledUndefined();
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EcmaRuntimeCallInfo info =
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EcmaInterpreter::NewRuntimeCallInfo(thread, constructor, undefined, undefined, 1);
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info.SetCallArg(JSTaggedValue(arrayLength));
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JSTaggedValue result = JSFunction::Construct(&info);
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// NOTEIf originalArray was created using the standard built-in Array constructor for
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// a Realm that is not the Realm of the running execution context, then a new Array is
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// created using the Realm of the running execution context. This maintains compatibility
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// with Web browsers that have historically had that behaviour for the Array.prototype methods
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// that now are defined using ArraySpeciesCreate.
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return result;
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}
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void JSArray::SetCapacity(JSThread *thread, const JSHandle<JSObject> &array, uint32_t oldLen, uint32_t newLen)
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{
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TaggedArray *element = TaggedArray::Cast(array->GetElements().GetTaggedObject());
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if (element->IsDictionaryMode()) {
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ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
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uint32_t numOfElements = array->GetNumberOfElements();
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uint32_t newNumOfElements = newLen;
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if (newLen < oldLen && numOfElements != 0U) {
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JSHandle<NumberDictionary> dictHandle(thread, element);
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JSHandle<TaggedArray> newArr = factory->NewTaggedArray(numOfElements);
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GetAllElementKeys(thread, array, 0, newArr);
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for (uint32_t i = numOfElements - 1; i >= newLen; i--) {
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JSTaggedValue value = newArr->Get(i);
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uint32_t output = 0;
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JSTaggedValue::StringToElementIndex(value, &output);
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JSTaggedValue key(static_cast<int>(output));
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int entry = dictHandle->FindEntry(key);
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uint32_t attr = dictHandle->GetAttributes(entry).GetValue();
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PropertyAttributes propAttr(attr);
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if (propAttr.IsConfigurable()) {
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JSHandle<NumberDictionary> newDict = NumberDictionary::Remove(thread, dictHandle, entry);
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array->SetElements(thread, newDict);
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if (i == 0) {
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newNumOfElements = i;
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break;
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}
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} else {
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newNumOfElements = i + 1;
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break;
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}
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}
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}
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JSArray::Cast(*array)->SetArrayLength(thread, newNumOfElements);
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return;
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}
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uint32_t capacity = element->GetLength();
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if (newLen <= capacity) {
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// judge if need to cut down the array size, else fill the unused tail with holes
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array->FillElementsWithHoles(thread, newLen, oldLen < capacity ? oldLen : capacity);
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}
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if (JSObject::ShouldTransToDict(oldLen, newLen)) {
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JSObject::ElementsToDictionary(thread, array);
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} else if (newLen > capacity) {
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JSObject::GrowElementsCapacity(thread, array, newLen);
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}
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JSArray::Cast(*array)->SetArrayLength(thread, newLen);
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}
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bool JSArray::ArraySetLength(JSThread *thread, const JSHandle<JSObject> &array, const PropertyDescriptor &desc)
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{
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JSHandle<JSTaggedValue> lengthKeyHandle(thread->GlobalConstants()->GetHandledLengthString());
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// 1. If the [[Value]] field of Desc is absent, then
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if (!desc.HasValue()) {
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// 1a. Return OrdinaryDefineOwnProperty(A, "length", Desc).
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return JSObject::OrdinaryDefineOwnProperty(thread, array, lengthKeyHandle, desc);
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}
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// 2. Let newLenDesc be a copy of Desc.
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// (Actual copying is not necessary.)
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PropertyDescriptor newLenDesc = desc;
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// 3. - 7. Convert Desc.[[Value]] to newLen.
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uint32_t newLen = 0;
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if (!JSTaggedValue::ToArrayLength(thread, desc.GetValue(), &newLen)) {
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THROW_RANGE_ERROR_AND_RETURN(thread, "array length must less than 2^32 - 1", false);
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}
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// 8. Set newLenDesc.[[Value]] to newLen.
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// (Done below, if needed.)
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// 9. Let oldLenDesc be OrdinaryGetOwnProperty(A, "length").
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PropertyDescriptor oldLenDesc(thread);
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[[maybe_unused]] bool success = GetOwnProperty(thread, array, lengthKeyHandle, oldLenDesc);
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// 10. (Assert)
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ASSERT(success);
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// 11. Let oldLen be oldLenDesc.[[Value]].
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uint32_t oldLen = 0;
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JSTaggedValue::ToArrayLength(thread, oldLenDesc.GetValue(), &oldLen);
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// 12. If newLen >= oldLen, then
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if (newLen >= oldLen) {
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// 8. Set newLenDesc.[[Value]] to newLen.
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// 12a. Return OrdinaryDefineOwnProperty(A, "length", newLenDesc).
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newLenDesc.SetValue(JSHandle<JSTaggedValue>(thread, JSTaggedValue(newLen)));
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return JSObject::OrdinaryDefineOwnProperty(thread, array, lengthKeyHandle, newLenDesc);
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}
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// 13. If oldLenDesc.[[Writable]] is false, return false.
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if (!oldLenDesc.IsWritable() ||
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// Also handle the {configurable: true} case since we later use
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// JSArray::SetLength instead of OrdinaryDefineOwnProperty to change
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// the length, and it doesn't have access to the descriptor anymore.
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newLenDesc.IsConfigurable()) {
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return false;
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}
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// 14. If newLenDesc.[[Writable]] is absent or has the value true,
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// let newWritable be true.
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bool newWritable = false;
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if (!newLenDesc.HasWritable() || newLenDesc.IsWritable()) {
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newWritable = true;
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}
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// 15. Else,
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// 15a. Need to defer setting the [[Writable]] attribute to false in case
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// any elements cannot be deleted.
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// 15b. Let newWritable be false. (It's initialized as "false" anyway.)
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// 15c. Set newLenDesc.[[Writable]] to true.
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// (Not needed.)
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// Most of steps 16 through 19 is implemented by JSArray::SetCapacity.
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JSArray::SetCapacity(thread, array, oldLen, newLen);
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// Steps 19d-ii, 20.
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if (!newWritable) {
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PropertyDescriptor readonly(thread);
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readonly.SetWritable(false);
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success = JSObject::DefineOwnProperty(thread, array, lengthKeyHandle, readonly);
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ASSERT_PRINT(success, "DefineOwnProperty of length must be success here!");
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}
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// Steps 19d-v, 21. Return false if there were non-deletable elements.
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uint32_t arrayLength = JSArray::Cast(*array)->GetArrayLength();
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return arrayLength == newLen;
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}
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bool JSArray::PropertyKeyToArrayIndex(JSThread *thread, const JSHandle<JSTaggedValue> &key, uint32_t *output)
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{
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return JSTaggedValue::ToArrayLength(thread, key, output) && *output <= JSArray::MAX_ARRAY_INDEX;
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}
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// 9.4.2.1 [[DefineOwnProperty]] ( P, Desc)
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bool JSArray::DefineOwnProperty(JSThread *thread, const JSHandle<JSObject> &array, const JSHandle<JSTaggedValue> &key,
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const PropertyDescriptor &desc)
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{
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// 1. Assert: IsPropertyKey(P) is true.
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ASSERT_PRINT(JSTaggedValue::IsPropertyKey(key), "Key is not a property key!");
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// 2. If P is "length", then
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if (IsLengthString(thread, key)) {
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// a. Return ArraySetLength(A, Desc).
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return ArraySetLength(thread, array, desc);
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}
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// 3. Else if P is an array index, then
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// already do in step 4.
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// 4. Return OrdinaryDefineOwnProperty(A, P, Desc).
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bool success = JSObject::OrdinaryDefineOwnProperty(thread, array, key, desc);
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if (success) {
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JSTaggedValue constructorKey = thread->GlobalConstants()->GetConstructorString();
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if (key.GetTaggedValue() == constructorKey) {
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array->GetJSHClass()->SetHasConstructor(true);
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return true;
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}
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}
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return success;
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}
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bool JSArray::DefineOwnProperty(JSThread *thread, const JSHandle<JSObject> &array, uint32_t index,
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const PropertyDescriptor &desc)
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{
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return JSObject::OrdinaryDefineOwnProperty(thread, array, index, desc);
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}
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bool JSArray::IsLengthString(JSThread *thread, const JSHandle<JSTaggedValue> &key)
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{
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return key.GetTaggedValue() == thread->GlobalConstants()->GetLengthString();
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}
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// ecma6 7.3 Operations on Objects
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JSHandle<JSArray> JSArray::CreateArrayFromList(JSThread *thread, const JSHandle<TaggedArray> &elements)
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{
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// Assert: elements is a List whose elements are all ECMAScript language values.
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// 2. Let array be ArrayCreate(0) (see 9.4.2.2).
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uint32_t length = elements->GetLength();
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// 4. For each element e of elements
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auto env = thread->GetEcmaVM()->GetGlobalEnv();
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ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
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JSHandle<JSTaggedValue> arrayFunc = env->GetArrayFunction();
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JSHandle<JSObject> obj = factory->NewJSObjectByConstructor(JSHandle<JSFunction>(arrayFunc), arrayFunc);
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obj->GetJSHClass()->SetExtensible(true);
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JSArray::Cast(*obj)->SetArrayLength(thread, length);
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obj->SetElements(thread, elements);
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return JSHandle<JSArray>(obj);
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}
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JSHandle<JSTaggedValue> JSArray::FastGetPropertyByValue(JSThread *thread, const JSHandle<JSTaggedValue> &obj,
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uint32_t index)
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{
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auto result = FastRuntimeStub::FastGetPropertyByIndex(thread, obj.GetTaggedValue(), index);
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return JSHandle<JSTaggedValue>(thread, result);
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}
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JSHandle<JSTaggedValue> JSArray::FastGetPropertyByValue(JSThread *thread, const JSHandle<JSTaggedValue> &obj,
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const JSHandle<JSTaggedValue> &key)
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{
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auto result = FastRuntimeStub::FastGetPropertyByValue(thread, obj.GetTaggedValue(), key.GetTaggedValue());
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return JSHandle<JSTaggedValue>(thread, result);
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}
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bool JSArray::FastSetPropertyByValue(JSThread *thread, const JSHandle<JSTaggedValue> &obj, uint32_t index,
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const JSHandle<JSTaggedValue> &value)
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{
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return FastRuntimeStub::FastSetPropertyByIndex(thread, obj.GetTaggedValue(), index, value.GetTaggedValue());
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}
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bool JSArray::FastSetPropertyByValue(JSThread *thread, const JSHandle<JSTaggedValue> &obj,
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const JSHandle<JSTaggedValue> &key, const JSHandle<JSTaggedValue> &value)
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{
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return FastRuntimeStub::FastSetPropertyByValue(thread, obj.GetTaggedValue(), key.GetTaggedValue(),
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value.GetTaggedValue());
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}
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void JSArray::Sort(JSThread *thread, const JSHandle<JSObject> &obj, const JSHandle<JSTaggedValue> &fn)
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{
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if (!fn->IsUndefined() && !fn->IsCallable()) {
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THROW_TYPE_ERROR(thread, "Callable is false");
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}
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// 2. Let len be ToLength(Get(obj, "length")).
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double len = base::ArrayHelper::GetArrayLength(thread, JSHandle<JSTaggedValue>(obj));
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// 3. ReturnIfAbrupt(len).
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RETURN_IF_ABRUPT_COMPLETION(thread);
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JSMutableHandle<JSTaggedValue> presentValue(thread, JSTaggedValue::Undefined());
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JSMutableHandle<JSTaggedValue> middleValue(thread, JSTaggedValue::Undefined());
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JSMutableHandle<JSTaggedValue> previousValue(thread, JSTaggedValue::Undefined());
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for (int i = 1; i < len; i++) {
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int beginIndex = 0;
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int endIndex = i;
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presentValue.Update(FastRuntimeStub::FastGetPropertyByIndex<true>(thread, obj.GetTaggedValue(), i));
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RETURN_IF_ABRUPT_COMPLETION(thread);
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while (beginIndex < endIndex) {
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int middleIndex = (beginIndex + endIndex) / 2; // 2 : half
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middleValue.Update(
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FastRuntimeStub::FastGetPropertyByIndex<true>(thread, obj.GetTaggedValue(), middleIndex));
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RETURN_IF_ABRUPT_COMPLETION(thread);
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int32_t compareResult = base::ArrayHelper::SortCompare(thread, fn, middleValue, presentValue);
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RETURN_IF_ABRUPT_COMPLETION(thread);
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if (compareResult > 0) {
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endIndex = middleIndex;
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} else {
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beginIndex = middleIndex + 1;
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}
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}
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if (endIndex >= 0 && endIndex < i) {
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for (int j = i; j > endIndex; j--) {
|
||
previousValue.Update(
|
||
FastRuntimeStub::FastGetPropertyByIndex<true>(thread, obj.GetTaggedValue(), j - 1));
|
||
RETURN_IF_ABRUPT_COMPLETION(thread);
|
||
FastRuntimeStub::FastSetPropertyByIndex(thread, obj.GetTaggedValue(), j,
|
||
previousValue.GetTaggedValue());
|
||
RETURN_IF_ABRUPT_COMPLETION(thread);
|
||
}
|
||
FastRuntimeStub::FastSetPropertyByIndex(thread, obj.GetTaggedValue(), endIndex,
|
||
presentValue.GetTaggedValue());
|
||
RETURN_IF_ABRUPT_COMPLETION(thread);
|
||
}
|
||
}
|
||
}
|
||
|
||
bool JSArray::IncludeInSortedValue(JSThread *thread, const JSHandle<JSTaggedValue> &obj,
|
||
const JSHandle<JSTaggedValue> &value)
|
||
{
|
||
ASSERT(obj->IsJSArray());
|
||
JSHandle<JSArray> arrayObj = JSHandle<JSArray>::Cast(obj);
|
||
int32_t length = static_cast<int32_t>(arrayObj->GetArrayLength());
|
||
if (length == 0) {
|
||
return false;
|
||
}
|
||
int32_t left = 0;
|
||
int32_t right = length - 1;
|
||
while (left <= right) {
|
||
int32_t middle = (left + right) / 2;
|
||
JSHandle<JSTaggedValue> vv = JSArray::FastGetPropertyByValue(thread, obj, middle);
|
||
ComparisonResult res = JSTaggedValue::Compare(thread, vv, value);
|
||
if (res == ComparisonResult::EQUAL) {
|
||
return true;
|
||
} else if (res == ComparisonResult::LESS) {
|
||
left = middle + 1;
|
||
} else {
|
||
right = middle - 1;
|
||
}
|
||
}
|
||
return false;
|
||
}
|
||
|
||
JSHandle<TaggedArray> JSArray::ToTaggedArray(JSThread *thread, const JSHandle<JSTaggedValue> &obj)
|
||
{
|
||
ASSERT(obj->IsJSArray());
|
||
JSHandle<JSArray> arrayObj = JSHandle<JSArray>::Cast(obj);
|
||
uint32_t length = arrayObj->GetArrayLength();
|
||
ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
|
||
JSHandle<TaggedArray> taggedArray = factory->NewTaggedArray(length);
|
||
for (uint32_t idx = 0; idx < length; idx++) {
|
||
JSHandle<JSTaggedValue> vv = JSArray::FastGetPropertyByValue(thread, obj, idx);
|
||
taggedArray->Set(thread, idx, vv);
|
||
}
|
||
return taggedArray;
|
||
}
|
||
} // namespace panda::ecmascript
|