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Diffstat (limited to 'fxjse/include/cfxjse_value.h')
| -rw-r--r-- | fxjse/include/cfxjse_value.h | 284 |
1 files changed, 284 insertions, 0 deletions
diff --git a/fxjse/include/cfxjse_value.h b/fxjse/include/cfxjse_value.h new file mode 100644 index 0000000000..e01f64cfff --- /dev/null +++ b/fxjse/include/cfxjse_value.h @@ -0,0 +1,284 @@ +// 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 + +#ifndef FXJSE_INCLUDE_CFXJSE_VALUE_H_ +#define FXJSE_INCLUDE_CFXJSE_VALUE_H_ + +#include "fxjse/scope_inline.h" + +V8_INLINE static double FXJSE_ftod(FX_FLOAT fNumber) { + if (sizeof(FX_FLOAT) != 4) { + ASSERT(FALSE); + return fNumber; + } + + uint32_t nFloatBits = (uint32_t&)fNumber; + uint8_t nExponent = (uint8_t)(nFloatBits >> 16 >> 7); + if (nExponent == 0 || nExponent == 255) + return fNumber; + + int8_t nErrExp = nExponent - 127 - 23; + 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; +} + +class CFXJSE_Value { + public: + CFXJSE_Value(v8::Isolate* pIsolate) : m_pIsolate(pIsolate) {} + + V8_INLINE FX_BOOL 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(); + } + V8_INLINE FX_BOOL 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(); + } + V8_INLINE FX_BOOL 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(); + } + V8_INLINE FX_BOOL 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(); + } + V8_INLINE FX_BOOL 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(); + } + V8_INLINE FX_BOOL 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(); + } + V8_INLINE FX_BOOL 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(); + } + V8_INLINE FX_BOOL 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(); + } + V8_INLINE FX_BOOL 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(); + } + V8_INLINE FX_BOOL 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(); + } + + V8_INLINE FX_BOOL 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()); + } + V8_INLINE FX_FLOAT 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()); + } + V8_INLINE double 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()); + } + V8_INLINE int32_t 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()); + } + V8_INLINE CFX_ByteString 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); + } + V8_INLINE CFX_WideString ToWideString() const { + return CFX_WideString::FromUTF8(ToString().AsStringC()); + } + CFXJSE_HostObject* ToHostObject(CFXJSE_Class* lpClass) const; + + V8_INLINE void SetUndefined() { + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Undefined(m_pIsolate); + m_hValue.Reset(m_pIsolate, hValue); + } + V8_INLINE void SetNull() { + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Null(m_pIsolate); + m_hValue.Reset(m_pIsolate, hValue); + } + V8_INLINE void 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); + } + V8_INLINE void 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); + } + V8_INLINE void 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); + } + V8_INLINE void 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); + } + V8_INLINE void SetFloat(FX_FLOAT fFloat) { + CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); + v8::Local<v8::Value> pValue = + v8::Number::New(m_pIsolate, FXJSE_ftod(fFloat)); + m_hValue.Reset(m_pIsolate, pValue); + } + V8_INLINE void SetJSObject() { + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); + v8::Local<v8::Value> hValue = v8::Object::New(m_pIsolate); + m_hValue.Reset(m_pIsolate, hValue); + } + + void SetObject(CFXJSE_HostObject* lpObject, CFXJSE_Class* pClass); + void SetHostObject(CFXJSE_HostObject* lpObject, CFXJSE_Class* lpClass); + void SetArray(uint32_t uValueCount, CFXJSE_Value** rgValues); + void SetDate(double dDouble); + + FX_BOOL GetObjectProperty(const CFX_ByteStringC& szPropName, + CFXJSE_Value* lpPropValue); + FX_BOOL SetObjectProperty(const CFX_ByteStringC& szPropName, + CFXJSE_Value* lpPropValue); + FX_BOOL GetObjectPropertyByIdx(uint32_t uPropIdx, CFXJSE_Value* lpPropValue); + FX_BOOL SetObjectProperty(uint32_t uPropIdx, CFXJSE_Value* lpPropValue); + FX_BOOL DeleteObjectProperty(const CFX_ByteStringC& szPropName); + FX_BOOL HasObjectOwnProperty(const CFX_ByteStringC& szPropName, + FX_BOOL bUseTypeGetter); + FX_BOOL SetObjectOwnProperty(const CFX_ByteStringC& szPropName, + CFXJSE_Value* lpPropValue); + FX_BOOL SetFunctionBind(CFXJSE_Value* lpOldFunction, CFXJSE_Value* lpNewThis); + FX_BOOL Call(CFXJSE_Value* lpReceiver, + CFXJSE_Value* lpRetValue, + uint32_t nArgCount, + CFXJSE_Value** lpArgs); + + V8_INLINE v8::Isolate* GetIsolate() const { return m_pIsolate; } + V8_INLINE const v8::Global<v8::Value>& DirectGetValue() const { + return m_hValue; + } + V8_INLINE void ForceSetValue(v8::Local<v8::Value> hValue) { + m_hValue.Reset(m_pIsolate, hValue); + } + V8_INLINE void Assign(const CFXJSE_Value* lpValue) { + ASSERT(lpValue); + if (lpValue) { + m_hValue.Reset(m_pIsolate, lpValue->m_hValue); + } else { + m_hValue.Reset(); + } + } + + private: + friend class CFXJSE_Class; + friend class CFXJSE_Context; + + CFXJSE_Value(); + CFXJSE_Value(const CFXJSE_Value&); + CFXJSE_Value& operator=(const CFXJSE_Value&); + + v8::Isolate* m_pIsolate; + v8::Global<v8::Value> m_hValue; +}; + +#endif // FXJSE_INCLUDE_CFXJSE_VALUE_H_ |