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