diff options
Diffstat (limited to 'fxjs/cfxjse_value.cpp')
| -rw-r--r-- | fxjs/cfxjse_value.cpp | 519 |
1 files changed, 519 insertions, 0 deletions
diff --git a/fxjs/cfxjse_value.cpp b/fxjs/cfxjse_value.cpp new file mode 100644 index 0000000000..b1fc0784e8 --- /dev/null +++ b/fxjs/cfxjse_value.cpp @@ -0,0 +1,519 @@ +// 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/include/cfxjse_value.h" + +#include <math.h> + +#include "fxjs/include/cfxjse_class.h" +#include "fxjs/include/cfxjse_context.h" + +namespace { + +double ftod(FX_FLOAT fNumber) { + static_assert(sizeof(FX_FLOAT) == 4, "FX_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 CFX_ByteStringC& utf8Message) { + v8::Isolate* pIsolate = v8::Isolate::GetCurrent(); + ASSERT(pIsolate); + + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(pIsolate); + v8::Local<v8::String> hMessage = v8::String::NewFromUtf8( + pIsolate, utf8Message.c_str(), v8::String::kNormalString, + utf8Message.GetLength()); + 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(CFXJSE_Class* lpClass) const { + ASSERT(!m_hValue.IsEmpty()); + + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> pValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + ASSERT(!pValue.IsEmpty()); + + if (!pValue->IsObject()) + return nullptr; + + return FXJSE_RetrieveObjectBinding(pValue.As<v8::Object>(), lpClass); +} + +void CFXJSE_Value::SetObject(CFXJSE_HostObject* lpObject, + CFXJSE_Class* pClass) { + if (!pClass) { + ASSERT(!lpObject); + SetJSObject(); + return; + } + SetHostObject(lpObject, pClass); +} + +void CFXJSE_Value::SetHostObject(CFXJSE_HostObject* lpObject, + CFXJSE_Class* lpClass) { + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + ASSERT(lpClass); + v8::Local<v8::FunctionTemplate> hClass = + v8::Local<v8::FunctionTemplate>::New(m_pIsolate, lpClass->m_hTemplate); + v8::Local<v8::Object> hObject = hClass->InstanceTemplate()->NewInstance(); + FXJSE_UpdateObjectBinding(hObject, lpObject); + m_hValue.Reset(m_pIsolate, hObject); +} + +void CFXJSE_Value::SetArray(uint32_t uValueCount, CFXJSE_Value** rgValues) { + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Array> hArrayObject = v8::Array::New(m_pIsolate, uValueCount); + if (rgValues) { + for (uint32_t i = 0; i < uValueCount; i++) { + if (rgValues[i]) { + hArrayObject->Set(i, v8::Local<v8::Value>::New( + m_pIsolate, rgValues[i]->DirectGetValue())); + } + } + } + m_hValue.Reset(m_pIsolate, hArrayObject); +} + +void CFXJSE_Value::SetDate(double dDouble) { + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> hDate = v8::Date::New(m_pIsolate, dDouble); + m_hValue.Reset(m_pIsolate, hDate); +} + +void CFXJSE_Value::SetFloat(FX_FLOAT fFloat) { + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> pValue = v8::Number::New(m_pIsolate, ftod(fFloat)); + m_hValue.Reset(m_pIsolate, pValue); +} + +FX_BOOL CFXJSE_Value::SetObjectProperty(const CFX_ByteStringC& szPropName, + CFXJSE_Value* lpPropValue) { + ASSERT(lpPropValue); + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> hObject = + v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + if (!hObject->IsObject()) + return FALSE; + + v8::Local<v8::Value> hPropValue = + v8::Local<v8::Value>::New(m_pIsolate, lpPropValue->DirectGetValue()); + return (FX_BOOL)hObject.As<v8::Object>()->Set( + v8::String::NewFromUtf8(m_pIsolate, szPropName.c_str(), + v8::String::kNormalString, + szPropName.GetLength()), + hPropValue); +} + +FX_BOOL CFXJSE_Value::GetObjectProperty(const CFX_ByteStringC& szPropName, + CFXJSE_Value* lpPropValue) { + ASSERT(lpPropValue); + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> hObject = + v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + if (!hObject->IsObject()) + return FALSE; + + v8::Local<v8::Value> hPropValue = + hObject.As<v8::Object>()->Get(v8::String::NewFromUtf8( + m_pIsolate, szPropName.c_str(), v8::String::kNormalString, + szPropName.GetLength())); + lpPropValue->ForceSetValue(hPropValue); + return TRUE; +} + +FX_BOOL CFXJSE_Value::SetObjectProperty(uint32_t uPropIdx, + CFXJSE_Value* lpPropValue) { + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> hObject = + v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + if (!hObject->IsObject()) + return FALSE; + + v8::Local<v8::Value> hPropValue = + v8::Local<v8::Value>::New(m_pIsolate, lpPropValue->DirectGetValue()); + return (FX_BOOL)hObject.As<v8::Object>()->Set(uPropIdx, hPropValue); +} + +FX_BOOL CFXJSE_Value::GetObjectPropertyByIdx(uint32_t uPropIdx, + CFXJSE_Value* lpPropValue) { + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> hObject = + v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + if (!hObject->IsObject()) + return FALSE; + + v8::Local<v8::Value> hPropValue = hObject.As<v8::Object>()->Get(uPropIdx); + lpPropValue->ForceSetValue(hPropValue); + return TRUE; +} + +FX_BOOL CFXJSE_Value::DeleteObjectProperty(const CFX_ByteStringC& szPropName) { + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> hObject = + v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + if (!hObject->IsObject()) + return FALSE; + + hObject.As<v8::Object>()->Delete(v8::String::NewFromUtf8( + m_pIsolate, szPropName.c_str(), v8::String::kNormalString, + szPropName.GetLength())); + return TRUE; +} + +FX_BOOL CFXJSE_Value::HasObjectOwnProperty(const CFX_ByteStringC& szPropName, + FX_BOOL bUseTypeGetter) { + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> hObject = + v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + if (!hObject->IsObject()) + return FALSE; + + v8::Local<v8::String> hKey = v8::String::NewFromUtf8( + m_pIsolate, szPropName.c_str(), v8::String::kNormalString, + szPropName.GetLength()); + return hObject.As<v8::Object>()->HasRealNamedProperty(hKey) || + (bUseTypeGetter && + hObject.As<v8::Object>() + ->HasOwnProperty(m_pIsolate->GetCurrentContext(), hKey) + .FromMaybe(false)); +} + +FX_BOOL CFXJSE_Value::SetObjectOwnProperty(const CFX_ByteStringC& szPropName, + CFXJSE_Value* lpPropValue) { + ASSERT(lpPropValue); + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> hObject = + v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + if (!hObject->IsObject()) + return FALSE; + + v8::Local<v8::Value> pValue = + v8::Local<v8::Value>::New(m_pIsolate, lpPropValue->m_hValue); + return hObject.As<v8::Object>() + ->DefineOwnProperty( + m_pIsolate->GetCurrentContext(), + v8::String::NewFromUtf8(m_pIsolate, szPropName.c_str(), + v8::String::kNormalString, + szPropName.GetLength()), + pValue) + .FromMaybe(false); +} + +FX_BOOL CFXJSE_Value::SetFunctionBind(CFXJSE_Value* lpOldFunction, + CFXJSE_Value* lpNewThis) { + ASSERT(lpOldFunction && lpNewThis); + + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> rgArgs[2]; + v8::Local<v8::Value> hOldFunction = + v8::Local<v8::Value>::New(m_pIsolate, lpOldFunction->DirectGetValue()); + if (hOldFunction.IsEmpty() || !hOldFunction->IsFunction()) + return FALSE; + + rgArgs[0] = hOldFunction; + v8::Local<v8::Value> hNewThis = + v8::Local<v8::Value>::New(m_pIsolate, lpNewThis->DirectGetValue()); + if (hNewThis.IsEmpty()) + return FALSE; + + rgArgs[1] = hNewThis; + v8::Local<v8::String> hBinderFuncSource = + v8::String::NewFromUtf8(m_pIsolate, + "(function (oldfunction, newthis) { return " + "oldfunction.bind(newthis); })"); + v8::Local<v8::Function> hBinderFunc = + v8::Script::Compile(hBinderFuncSource)->Run().As<v8::Function>(); + v8::Local<v8::Value> hBoundFunction = + hBinderFunc->Call(m_pIsolate->GetCurrentContext()->Global(), 2, rgArgs); + if (hBoundFunction.IsEmpty() || !hBoundFunction->IsFunction()) + return FALSE; + + m_hValue.Reset(m_pIsolate, hBoundFunction); + return TRUE; +} + +#define FXJSE_INVALID_PTR ((void*)(intptr_t)-1) +FX_BOOL CFXJSE_Value::Call(CFXJSE_Value* lpReceiver, + CFXJSE_Value* lpRetValue, + uint32_t nArgCount, + CFXJSE_Value** lpArgs) { + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> hFunctionValue = + v8::Local<v8::Value>::New(m_pIsolate, DirectGetValue()); + v8::Local<v8::Object> hFunctionObject = + !hFunctionValue.IsEmpty() && hFunctionValue->IsObject() + ? hFunctionValue.As<v8::Object>() + : v8::Local<v8::Object>(); + + v8::TryCatch trycatch(m_pIsolate); + if (hFunctionObject.IsEmpty() || !hFunctionObject->IsCallable()) { + if (lpRetValue) + lpRetValue->ForceSetValue(FXJSE_CreateReturnValue(m_pIsolate, trycatch)); + return FALSE; + } + + v8::Local<v8::Value> hReturnValue; + v8::Local<v8::Value>* lpLocalArgs = NULL; + if (nArgCount) { + lpLocalArgs = FX_Alloc(v8::Local<v8::Value>, nArgCount); + for (uint32_t i = 0; i < nArgCount; i++) { + new (lpLocalArgs + i) v8::Local<v8::Value>; + CFXJSE_Value* lpArg = lpArgs[i]; + if (lpArg) { + lpLocalArgs[i] = + v8::Local<v8::Value>::New(m_pIsolate, lpArg->DirectGetValue()); + } + if (lpLocalArgs[i].IsEmpty()) { + lpLocalArgs[i] = v8::Undefined(m_pIsolate); + } + } + } + + FX_BOOL bRetValue = TRUE; + if (lpReceiver == FXJSE_INVALID_PTR) { + v8::MaybeLocal<v8::Value> maybe_retvalue = + hFunctionObject->CallAsConstructor(m_pIsolate->GetCurrentContext(), + nArgCount, lpLocalArgs); + hReturnValue = maybe_retvalue.FromMaybe(v8::Local<v8::Value>()); + } else { + v8::Local<v8::Value> hReceiver; + if (lpReceiver) { + hReceiver = + v8::Local<v8::Value>::New(m_pIsolate, lpReceiver->DirectGetValue()); + } + if (hReceiver.IsEmpty() || !hReceiver->IsObject()) + hReceiver = v8::Object::New(m_pIsolate); + + v8::MaybeLocal<v8::Value> maybe_retvalue = hFunctionObject->CallAsFunction( + m_pIsolate->GetCurrentContext(), hReceiver, nArgCount, lpLocalArgs); + hReturnValue = maybe_retvalue.FromMaybe(v8::Local<v8::Value>()); + } + + if (trycatch.HasCaught()) { + hReturnValue = FXJSE_CreateReturnValue(m_pIsolate, trycatch); + bRetValue = FALSE; + } + + if (lpRetValue) + lpRetValue->ForceSetValue(hReturnValue); + + if (lpLocalArgs) { + for (uint32_t i = 0; i < nArgCount; i++) + lpLocalArgs[i].~Local(); + FX_Free(lpLocalArgs); + } + return bRetValue; +} + +FX_BOOL CFXJSE_Value::IsUndefined() const { + if (m_hValue.IsEmpty()) + return FALSE; + + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + return hValue->IsUndefined(); +} + +FX_BOOL CFXJSE_Value::IsNull() const { + if (m_hValue.IsEmpty()) + return FALSE; + + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + return hValue->IsNull(); +} + +FX_BOOL CFXJSE_Value::IsBoolean() const { + if (m_hValue.IsEmpty()) + return FALSE; + + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + return hValue->IsBoolean(); +} + +FX_BOOL CFXJSE_Value::IsString() const { + if (m_hValue.IsEmpty()) + return FALSE; + + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + return hValue->IsString(); +} + +FX_BOOL CFXJSE_Value::IsNumber() const { + if (m_hValue.IsEmpty()) + return FALSE; + + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + return hValue->IsNumber(); +} + +FX_BOOL CFXJSE_Value::IsInteger() const { + if (m_hValue.IsEmpty()) + return FALSE; + + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + return hValue->IsInt32(); +} + +FX_BOOL CFXJSE_Value::IsObject() const { + if (m_hValue.IsEmpty()) + return FALSE; + + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + return hValue->IsObject(); +} + +FX_BOOL CFXJSE_Value::IsArray() const { + if (m_hValue.IsEmpty()) + return FALSE; + + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + return hValue->IsArray(); +} + +FX_BOOL CFXJSE_Value::IsFunction() const { + if (m_hValue.IsEmpty()) + return FALSE; + + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + return hValue->IsFunction(); +} + +FX_BOOL CFXJSE_Value::IsDate() const { + if (m_hValue.IsEmpty()) + return FALSE; + + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + return hValue->IsDate(); +} + +FX_BOOL CFXJSE_Value::ToBoolean() const { + ASSERT(!m_hValue.IsEmpty()); + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + return static_cast<FX_BOOL>(hValue->BooleanValue()); +} + +FX_FLOAT CFXJSE_Value::ToFloat() const { + ASSERT(!m_hValue.IsEmpty()); + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + return static_cast<FX_FLOAT>(hValue->NumberValue()); +} + +double CFXJSE_Value::ToDouble() const { + ASSERT(!m_hValue.IsEmpty()); + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + return static_cast<double>(hValue->NumberValue()); +} + +int32_t CFXJSE_Value::ToInteger() const { + ASSERT(!m_hValue.IsEmpty()); + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + return static_cast<int32_t>(hValue->NumberValue()); +} + +CFX_ByteString CFXJSE_Value::ToString() const { + ASSERT(!m_hValue.IsEmpty()); + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); + v8::Local<v8::String> hString = hValue->ToString(); + v8::String::Utf8Value hStringVal(hString); + return CFX_ByteString(*hStringVal); +} + +void CFXJSE_Value::SetUndefined() { + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Undefined(m_pIsolate); + m_hValue.Reset(m_pIsolate, hValue); +} + +void CFXJSE_Value::SetNull() { + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Null(m_pIsolate); + m_hValue.Reset(m_pIsolate, hValue); +} + +void CFXJSE_Value::SetBoolean(FX_BOOL bBoolean) { + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Boolean::New(m_pIsolate, bBoolean != FALSE); + m_hValue.Reset(m_pIsolate, hValue); +} + +void CFXJSE_Value::SetInteger(int32_t nInteger) { + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Integer::New(m_pIsolate, nInteger); + m_hValue.Reset(m_pIsolate, hValue); +} + +void CFXJSE_Value::SetDouble(double dDouble) { + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Number::New(m_pIsolate, dDouble); + m_hValue.Reset(m_pIsolate, hValue); +} + +void CFXJSE_Value::SetString(const CFX_ByteStringC& szString) { + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::String::NewFromUtf8( + m_pIsolate, reinterpret_cast<const char*>(szString.raw_str()), + v8::String::kNormalString, szString.GetLength()); + m_hValue.Reset(m_pIsolate, hValue); +} + +void CFXJSE_Value::SetJSObject() { + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Object::New(m_pIsolate); + m_hValue.Reset(m_pIsolate, hValue); +} |