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471 lines
16 KiB
471 lines
16 KiB
// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "fxjs/xfa/cfxjse_value.h"
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#include <math.h>
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#include "fxjs/xfa/cfxjse_class.h"
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#include "fxjs/xfa/cfxjse_context.h"
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#include "fxjs/xfa/cfxjse_isolatetracker.h"
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namespace {
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double ftod(float fNumber) {
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static_assert(sizeof(float) == 4, "float of incorrect size");
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uint32_t nFloatBits = (uint32_t&)fNumber;
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uint8_t nExponent = (uint8_t)(nFloatBits >> 23);
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if (nExponent == 0 || nExponent == 255)
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return fNumber;
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int8_t nErrExp = nExponent - 150;
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if (nErrExp >= 0)
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return fNumber;
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double dwError = pow(2.0, nErrExp), dwErrorHalf = dwError / 2;
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double dNumber = fNumber, dNumberAbs = fabs(fNumber);
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double dNumberAbsMin = dNumberAbs - dwErrorHalf,
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dNumberAbsMax = dNumberAbs + dwErrorHalf;
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int32_t iErrPos = 0;
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if (floor(dNumberAbsMin) == floor(dNumberAbsMax)) {
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dNumberAbsMin = fmod(dNumberAbsMin, 1.0);
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dNumberAbsMax = fmod(dNumberAbsMax, 1.0);
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int32_t iErrPosMin = 1, iErrPosMax = 38;
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do {
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int32_t iMid = (iErrPosMin + iErrPosMax) / 2;
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double dPow = pow(10.0, iMid);
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if (floor(dNumberAbsMin * dPow) == floor(dNumberAbsMax * dPow)) {
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iErrPosMin = iMid + 1;
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} else {
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iErrPosMax = iMid;
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}
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} while (iErrPosMin < iErrPosMax);
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iErrPos = iErrPosMax;
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}
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double dPow = pow(10.0, iErrPos);
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return fNumber < 0 ? ceil(dNumber * dPow - 0.5) / dPow
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: floor(dNumber * dPow + 0.5) / dPow;
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}
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} // namespace
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void FXJSE_ThrowMessage(ByteStringView utf8Message) {
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v8::Isolate* pIsolate = v8::Isolate::GetCurrent();
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ASSERT(pIsolate);
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(pIsolate);
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v8::Local<v8::String> hMessage =
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v8::String::NewFromUtf8(pIsolate, utf8Message.unterminated_c_str(),
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v8::NewStringType::kNormal,
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utf8Message.GetLength())
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.ToLocalChecked();
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v8::Local<v8::Value> hError = v8::Exception::Error(hMessage);
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pIsolate->ThrowException(hError);
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}
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CFXJSE_Value::CFXJSE_Value(v8::Isolate* pIsolate) : m_pIsolate(pIsolate) {}
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CFXJSE_Value::~CFXJSE_Value() {}
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CFXJSE_HostObject* CFXJSE_Value::ToHostObject() const {
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(GetIsolate());
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v8::Local<v8::Value> pValue =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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ASSERT(!pValue.IsEmpty());
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if (!pValue->IsObject())
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return nullptr;
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return FXJSE_RetrieveObjectBinding(pValue.As<v8::Object>());
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}
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void CFXJSE_Value::SetHostObject(CFXJSE_HostObject* lpObject,
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CFXJSE_Class* pClass) {
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(GetIsolate());
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v8::Local<v8::FunctionTemplate> hClass =
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v8::Local<v8::FunctionTemplate>::New(GetIsolate(), pClass->m_hTemplate);
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v8::Local<v8::Object> hObject =
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hClass->InstanceTemplate()
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->NewInstance(GetIsolate()->GetCurrentContext())
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.ToLocalChecked();
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FXJSE_UpdateObjectBinding(hObject, lpObject);
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m_hValue.Reset(GetIsolate(), hObject);
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}
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void CFXJSE_Value::ClearHostObject() {
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(GetIsolate());
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FXJSE_ClearObjectBinding(m_hValue.Get(GetIsolate()).As<v8::Object>());
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v8::Local<v8::Value> hValue = v8::Null(GetIsolate());
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m_hValue.Reset(GetIsolate(), hValue);
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}
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void CFXJSE_Value::SetArray(
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const std::vector<std::unique_ptr<CFXJSE_Value>>& values) {
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(GetIsolate());
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v8::Local<v8::Array> hArrayObject =
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v8::Array::New(GetIsolate(), values.size());
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v8::Local<v8::Context> context = GetIsolate()->GetCurrentContext();
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uint32_t count = 0;
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for (auto& v : values) {
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if (v->IsEmpty())
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v->SetUndefined();
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hArrayObject
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->Set(
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context, count++,
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v8::Local<v8::Value>::New(GetIsolate(), v.get()->DirectGetValue()))
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.FromJust();
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}
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m_hValue.Reset(GetIsolate(), hArrayObject);
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}
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void CFXJSE_Value::SetFloat(float fFloat) {
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CFXJSE_ScopeUtil_IsolateHandle scope(GetIsolate());
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v8::Local<v8::Value> pValue = v8::Number::New(GetIsolate(), ftod(fFloat));
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m_hValue.Reset(GetIsolate(), pValue);
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}
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bool CFXJSE_Value::SetObjectProperty(ByteStringView szPropName,
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CFXJSE_Value* lpPropValue) {
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ASSERT(lpPropValue);
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if (lpPropValue->IsEmpty())
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return false;
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(GetIsolate());
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v8::Local<v8::Value> hObject =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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if (!hObject->IsObject())
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return false;
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v8::Local<v8::String> hPropName =
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v8::String::NewFromUtf8(GetIsolate(), szPropName.unterminated_c_str(),
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v8::NewStringType::kNormal,
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szPropName.GetLength())
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.ToLocalChecked();
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v8::Local<v8::Value> hPropValue =
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v8::Local<v8::Value>::New(GetIsolate(), lpPropValue->DirectGetValue());
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v8::Maybe<bool> result = hObject.As<v8::Object>()->Set(
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GetIsolate()->GetCurrentContext(), hPropName, hPropValue);
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return result.IsJust() && result.FromJust();
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}
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bool CFXJSE_Value::GetObjectProperty(ByteStringView szPropName,
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CFXJSE_Value* lpPropValue) {
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ASSERT(lpPropValue);
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(GetIsolate());
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v8::Local<v8::Value> hObject =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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if (!hObject->IsObject())
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return false;
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v8::Local<v8::String> hPropName =
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v8::String::NewFromUtf8(GetIsolate(), szPropName.unterminated_c_str(),
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v8::NewStringType::kNormal,
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szPropName.GetLength())
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.ToLocalChecked();
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v8::Local<v8::Value> hPropValue =
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hObject.As<v8::Object>()
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->Get(GetIsolate()->GetCurrentContext(), hPropName)
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.ToLocalChecked();
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lpPropValue->ForceSetValue(hPropValue);
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return true;
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}
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bool CFXJSE_Value::GetObjectPropertyByIdx(uint32_t uPropIdx,
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CFXJSE_Value* lpPropValue) {
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(GetIsolate());
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v8::Local<v8::Value> hObject =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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if (!hObject->IsObject())
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return false;
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v8::Local<v8::Value> hPropValue =
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hObject.As<v8::Object>()
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->Get(GetIsolate()->GetCurrentContext(), uPropIdx)
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.ToLocalChecked();
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lpPropValue->ForceSetValue(hPropValue);
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return true;
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}
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bool CFXJSE_Value::DeleteObjectProperty(ByteStringView szPropName) {
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(GetIsolate());
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v8::Local<v8::Value> hObject =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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if (!hObject->IsObject())
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return false;
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v8::Local<v8::String> hPropName =
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v8::String::NewFromUtf8(GetIsolate(), szPropName.unterminated_c_str(),
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v8::NewStringType::kNormal,
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szPropName.GetLength())
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.ToLocalChecked();
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return hObject.As<v8::Object>()
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->Delete(GetIsolate()->GetCurrentContext(), hPropName)
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.FromJust();
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}
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bool CFXJSE_Value::HasObjectOwnProperty(ByteStringView szPropName,
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bool bUseTypeGetter) {
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(GetIsolate());
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v8::Local<v8::Value> hObject =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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if (!hObject->IsObject())
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return false;
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v8::Local<v8::String> hKey =
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v8::String::NewFromUtf8(GetIsolate(), szPropName.unterminated_c_str(),
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v8::NewStringType::kNormal,
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szPropName.GetLength())
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.ToLocalChecked();
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return hObject.As<v8::Object>()
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->HasRealNamedProperty(GetIsolate()->GetCurrentContext(), hKey)
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.FromJust() ||
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(bUseTypeGetter &&
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hObject.As<v8::Object>()
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->HasOwnProperty(GetIsolate()->GetCurrentContext(), hKey)
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.FromMaybe(false));
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}
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bool CFXJSE_Value::SetObjectOwnProperty(ByteStringView szPropName,
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CFXJSE_Value* lpPropValue) {
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ASSERT(lpPropValue);
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(GetIsolate());
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v8::Local<v8::Value> hObject =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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if (!hObject->IsObject())
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return false;
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v8::Local<v8::String> hPropName =
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v8::String::NewFromUtf8(GetIsolate(), szPropName.unterminated_c_str(),
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v8::NewStringType::kNormal,
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szPropName.GetLength())
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.ToLocalChecked();
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v8::Local<v8::Value> pValue =
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v8::Local<v8::Value>::New(GetIsolate(), lpPropValue->m_hValue);
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return hObject.As<v8::Object>()
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->DefineOwnProperty(GetIsolate()->GetCurrentContext(), hPropName, pValue)
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.FromMaybe(false);
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}
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bool CFXJSE_Value::SetFunctionBind(CFXJSE_Value* lpOldFunction,
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CFXJSE_Value* lpNewThis) {
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ASSERT(lpOldFunction);
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ASSERT(lpNewThis);
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(GetIsolate());
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v8::Local<v8::Value> rgArgs[2];
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v8::Local<v8::Value> hOldFunction =
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v8::Local<v8::Value>::New(GetIsolate(), lpOldFunction->DirectGetValue());
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if (hOldFunction.IsEmpty() || !hOldFunction->IsFunction())
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return false;
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rgArgs[0] = hOldFunction;
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v8::Local<v8::Value> hNewThis =
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v8::Local<v8::Value>::New(GetIsolate(), lpNewThis->DirectGetValue());
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if (hNewThis.IsEmpty())
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return false;
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rgArgs[1] = hNewThis;
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v8::Local<v8::String> hBinderFuncSource =
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v8::String::NewFromUtf8(GetIsolate(),
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"(function (oldfunction, newthis) { return "
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"oldfunction.bind(newthis); })",
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v8::NewStringType::kNormal)
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.ToLocalChecked();
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v8::Local<v8::Context> hContext = GetIsolate()->GetCurrentContext();
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v8::Local<v8::Function> hBinderFunc =
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v8::Script::Compile(hContext, hBinderFuncSource)
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.ToLocalChecked()
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->Run(hContext)
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.ToLocalChecked()
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.As<v8::Function>();
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v8::Local<v8::Value> hBoundFunction =
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hBinderFunc->Call(hContext, hContext->Global(), 2, rgArgs)
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.ToLocalChecked();
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if (hBoundFunction.IsEmpty() || !hBoundFunction->IsFunction())
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return false;
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m_hValue.Reset(GetIsolate(), hBoundFunction);
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return true;
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}
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bool CFXJSE_Value::IsEmpty() const {
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return m_hValue.IsEmpty();
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}
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bool CFXJSE_Value::IsUndefined() const {
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if (IsEmpty())
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return false;
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CFXJSE_ScopeUtil_IsolateHandle scope(GetIsolate());
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v8::Local<v8::Value> hValue =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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return hValue->IsUndefined();
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}
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bool CFXJSE_Value::IsNull() const {
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if (IsEmpty())
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return false;
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CFXJSE_ScopeUtil_IsolateHandle scope(GetIsolate());
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v8::Local<v8::Value> hValue =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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return hValue->IsNull();
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}
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bool CFXJSE_Value::IsBoolean() const {
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if (IsEmpty())
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return false;
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CFXJSE_ScopeUtil_IsolateHandle scope(GetIsolate());
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v8::Local<v8::Value> hValue =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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return hValue->IsBoolean();
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}
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bool CFXJSE_Value::IsString() const {
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if (IsEmpty())
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return false;
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CFXJSE_ScopeUtil_IsolateHandle scope(GetIsolate());
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v8::Local<v8::Value> hValue =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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return hValue->IsString();
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}
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bool CFXJSE_Value::IsNumber() const {
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if (IsEmpty())
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return false;
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CFXJSE_ScopeUtil_IsolateHandle scope(GetIsolate());
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v8::Local<v8::Value> hValue =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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return hValue->IsNumber();
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}
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bool CFXJSE_Value::IsInteger() const {
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if (IsEmpty())
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return false;
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CFXJSE_ScopeUtil_IsolateHandle scope(GetIsolate());
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v8::Local<v8::Value> hValue =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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return hValue->IsInt32();
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}
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bool CFXJSE_Value::IsObject() const {
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if (IsEmpty())
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return false;
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CFXJSE_ScopeUtil_IsolateHandle scope(GetIsolate());
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v8::Local<v8::Value> hValue =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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return hValue->IsObject();
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}
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bool CFXJSE_Value::IsArray() const {
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if (IsEmpty())
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return false;
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CFXJSE_ScopeUtil_IsolateHandle scope(GetIsolate());
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v8::Local<v8::Value> hValue =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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return hValue->IsArray();
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}
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bool CFXJSE_Value::IsFunction() const {
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if (IsEmpty())
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return false;
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CFXJSE_ScopeUtil_IsolateHandle scope(GetIsolate());
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v8::Local<v8::Value> hValue =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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return hValue->IsFunction();
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}
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bool CFXJSE_Value::ToBoolean() const {
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ASSERT(!IsEmpty());
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(GetIsolate());
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v8::Local<v8::Value> hValue =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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return hValue->BooleanValue(GetIsolate());
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}
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float CFXJSE_Value::ToFloat() const {
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ASSERT(!IsEmpty());
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(GetIsolate());
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v8::Local<v8::Value> hValue =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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return static_cast<float>(
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hValue->NumberValue(GetIsolate()->GetCurrentContext()).FromMaybe(0.0));
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}
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double CFXJSE_Value::ToDouble() const {
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ASSERT(!IsEmpty());
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(GetIsolate());
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v8::Local<v8::Value> hValue =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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return hValue->NumberValue(GetIsolate()->GetCurrentContext()).FromMaybe(0.0);
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}
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int32_t CFXJSE_Value::ToInteger() const {
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ASSERT(!IsEmpty());
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(GetIsolate());
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v8::Local<v8::Value> hValue =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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return static_cast<int32_t>(
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hValue->NumberValue(GetIsolate()->GetCurrentContext()).FromMaybe(0.0));
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}
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ByteString CFXJSE_Value::ToString() const {
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ASSERT(!IsEmpty());
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CFXJSE_ScopeUtil_IsolateHandleRootContext scope(GetIsolate());
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v8::Local<v8::Value> hValue =
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v8::Local<v8::Value>::New(GetIsolate(), m_hValue);
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v8::Local<v8::String> hString =
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hValue->ToString(GetIsolate()->GetCurrentContext()).ToLocalChecked();
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v8::String::Utf8Value hStringVal(GetIsolate(), hString);
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return ByteString(*hStringVal);
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}
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void CFXJSE_Value::SetUndefined() {
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CFXJSE_ScopeUtil_IsolateHandle scope(GetIsolate());
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v8::Local<v8::Value> hValue = v8::Undefined(GetIsolate());
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m_hValue.Reset(GetIsolate(), hValue);
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}
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void CFXJSE_Value::SetNull() {
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CFXJSE_ScopeUtil_IsolateHandle scope(GetIsolate());
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v8::Local<v8::Value> hValue = v8::Null(GetIsolate());
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m_hValue.Reset(GetIsolate(), hValue);
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}
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void CFXJSE_Value::SetBoolean(bool bBoolean) {
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CFXJSE_ScopeUtil_IsolateHandle scope(GetIsolate());
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v8::Local<v8::Value> hValue = v8::Boolean::New(GetIsolate(), !!bBoolean);
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m_hValue.Reset(GetIsolate(), hValue);
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}
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void CFXJSE_Value::SetInteger(int32_t nInteger) {
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CFXJSE_ScopeUtil_IsolateHandle scope(GetIsolate());
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v8::Local<v8::Value> hValue = v8::Integer::New(GetIsolate(), nInteger);
|
|
m_hValue.Reset(GetIsolate(), hValue);
|
|
}
|
|
|
|
void CFXJSE_Value::SetDouble(double dDouble) {
|
|
CFXJSE_ScopeUtil_IsolateHandle scope(GetIsolate());
|
|
v8::Local<v8::Value> hValue = v8::Number::New(GetIsolate(), dDouble);
|
|
m_hValue.Reset(GetIsolate(), hValue);
|
|
}
|
|
|
|
void CFXJSE_Value::SetString(ByteStringView szString) {
|
|
CFXJSE_ScopeUtil_IsolateHandle scope(GetIsolate());
|
|
v8::Local<v8::Value> hValue =
|
|
v8::String::NewFromUtf8(GetIsolate(), szString.unterminated_c_str(),
|
|
v8::NewStringType::kNormal, szString.GetLength())
|
|
.ToLocalChecked();
|
|
m_hValue.Reset(GetIsolate(), hValue);
|
|
}
|