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// 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 XFA_FXJSE_VALUE_H_
#define XFA_FXJSE_VALUE_H_
#include "xfa/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 // XFA_FXJSE_VALUE_H_
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