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| 1 // Copyright 2014 PDFium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | |
| 6 | |
| 7 #include "fxjse/include/cfxjse_value.h" | |
| 8 | |
| 9 #include <math.h> | |
| 10 | |
| 11 #include "fxjse/context.h" | |
| 12 #include "fxjse/include/cfxjse_class.h" | |
| 13 | |
| 14 namespace { | |
| 15 | |
| 16 double FXJSE_ftod(FX_FLOAT fNumber) { | |
| 17 static_assert(sizeof(FX_FLOAT) == 4, "FX_FLOAT of incorrect size"); | |
| 18 | |
| 19 uint32_t nFloatBits = (uint32_t&)fNumber; | |
| 20 uint8_t nExponent = (uint8_t)(nFloatBits >> 23); | |
| 21 if (nExponent == 0 || nExponent == 255) | |
| 22 return fNumber; | |
| 23 | |
| 24 int8_t nErrExp = nExponent - 150; | |
| 25 if (nErrExp >= 0) | |
| 26 return fNumber; | |
| 27 | |
| 28 double dwError = pow(2.0, nErrExp), dwErrorHalf = dwError / 2; | |
| 29 double dNumber = fNumber, dNumberAbs = fabs(fNumber); | |
| 30 double dNumberAbsMin = dNumberAbs - dwErrorHalf, | |
| 31 dNumberAbsMax = dNumberAbs + dwErrorHalf; | |
| 32 int32_t iErrPos = 0; | |
| 33 if (floor(dNumberAbsMin) == floor(dNumberAbsMax)) { | |
| 34 dNumberAbsMin = fmod(dNumberAbsMin, 1.0); | |
| 35 dNumberAbsMax = fmod(dNumberAbsMax, 1.0); | |
| 36 int32_t iErrPosMin = 1, iErrPosMax = 38; | |
| 37 do { | |
| 38 int32_t iMid = (iErrPosMin + iErrPosMax) / 2; | |
| 39 double dPow = pow(10.0, iMid); | |
| 40 if (floor(dNumberAbsMin * dPow) == floor(dNumberAbsMax * dPow)) { | |
| 41 iErrPosMin = iMid + 1; | |
| 42 } else { | |
| 43 iErrPosMax = iMid; | |
| 44 } | |
| 45 } while (iErrPosMin < iErrPosMax); | |
| 46 iErrPos = iErrPosMax; | |
| 47 } | |
| 48 double dPow = pow(10.0, iErrPos); | |
| 49 return fNumber < 0 ? ceil(dNumber * dPow - 0.5) / dPow | |
| 50 : floor(dNumber * dPow + 0.5) / dPow; | |
| 51 } | |
| 52 | |
| 53 } // namespace | |
| 54 | |
| 55 void FXJSE_ThrowMessage(const CFX_ByteStringC& utf8Message) { | |
| 56 v8::Isolate* pIsolate = v8::Isolate::GetCurrent(); | |
| 57 ASSERT(pIsolate); | |
| 58 | |
| 59 CFXJSE_ScopeUtil_IsolateHandleRootContext scope(pIsolate); | |
| 60 v8::Local<v8::String> hMessage = v8::String::NewFromUtf8( | |
| 61 pIsolate, utf8Message.c_str(), v8::String::kNormalString, | |
| 62 utf8Message.GetLength()); | |
| 63 v8::Local<v8::Value> hError = v8::Exception::Error(hMessage); | |
| 64 pIsolate->ThrowException(hError); | |
| 65 } | |
| 66 | |
| 67 CFXJSE_Value::CFXJSE_Value(v8::Isolate* pIsolate) : m_pIsolate(pIsolate) {} | |
| 68 | |
| 69 CFXJSE_Value::~CFXJSE_Value() {} | |
| 70 | |
| 71 CFXJSE_HostObject* CFXJSE_Value::ToHostObject(CFXJSE_Class* lpClass) const { | |
| 72 ASSERT(!m_hValue.IsEmpty()); | |
| 73 | |
| 74 CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); | |
| 75 v8::Local<v8::Value> pValue = v8::Local<v8::Value>::New(m_pIsolate, m_hValue); | |
| 76 ASSERT(!pValue.IsEmpty()); | |
| 77 | |
| 78 if (!pValue->IsObject()) | |
| 79 return nullptr; | |
| 80 | |
| 81 return FXJSE_RetrieveObjectBinding(pValue.As<v8::Object>(), lpClass); | |
| 82 } | |
| 83 | |
| 84 void CFXJSE_Value::SetObject(CFXJSE_HostObject* lpObject, | |
| 85 CFXJSE_Class* pClass) { | |
| 86 if (!pClass) { | |
| 87 ASSERT(!lpObject); | |
| 88 SetJSObject(); | |
| 89 return; | |
| 90 } | |
| 91 SetHostObject(lpObject, pClass); | |
| 92 } | |
| 93 | |
| 94 void CFXJSE_Value::SetHostObject(CFXJSE_HostObject* lpObject, | |
| 95 CFXJSE_Class* lpClass) { | |
| 96 CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); | |
| 97 ASSERT(lpClass); | |
| 98 v8::Local<v8::FunctionTemplate> hClass = | |
| 99 v8::Local<v8::FunctionTemplate>::New(m_pIsolate, lpClass->m_hTemplate); | |
| 100 v8::Local<v8::Object> hObject = hClass->InstanceTemplate()->NewInstance(); | |
| 101 FXJSE_UpdateObjectBinding(hObject, lpObject); | |
| 102 m_hValue.Reset(m_pIsolate, hObject); | |
| 103 } | |
| 104 | |
| 105 void CFXJSE_Value::SetArray(uint32_t uValueCount, CFXJSE_Value** rgValues) { | |
| 106 CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); | |
| 107 v8::Local<v8::Array> hArrayObject = v8::Array::New(m_pIsolate, uValueCount); | |
| 108 if (rgValues) { | |
| 109 for (uint32_t i = 0; i < uValueCount; i++) { | |
| 110 if (rgValues[i]) { | |
| 111 hArrayObject->Set(i, v8::Local<v8::Value>::New( | |
| 112 m_pIsolate, rgValues[i]->DirectGetValue())); | |
| 113 } | |
| 114 } | |
| 115 } | |
| 116 m_hValue.Reset(m_pIsolate, hArrayObject); | |
| 117 } | |
| 118 | |
| 119 void CFXJSE_Value::SetDate(double dDouble) { | |
| 120 CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); | |
| 121 v8::Local<v8::Value> hDate = v8::Date::New(m_pIsolate, dDouble); | |
| 122 m_hValue.Reset(m_pIsolate, hDate); | |
| 123 } | |
| 124 | |
| 125 void CFXJSE_Value::SetFloat(FX_FLOAT fFloat) { | |
| 126 CFXJSE_ScopeUtil_IsolateHandle scope(m_pIsolate); | |
| 127 v8::Local<v8::Value> pValue = v8::Number::New(m_pIsolate, FXJSE_ftod(fFloat)); | |
| 128 m_hValue.Reset(m_pIsolate, pValue); | |
| 129 } | |
| 130 | |
| 131 FX_BOOL CFXJSE_Value::SetObjectProperty(const CFX_ByteStringC& szPropName, | |
| 132 CFXJSE_Value* lpPropValue) { | |
| 133 ASSERT(lpPropValue); | |
| 134 CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); | |
| 135 v8::Local<v8::Value> hObject = | |
| 136 v8::Local<v8::Value>::New(m_pIsolate, m_hValue); | |
| 137 if (!hObject->IsObject()) | |
| 138 return FALSE; | |
| 139 | |
| 140 v8::Local<v8::Value> hPropValue = | |
| 141 v8::Local<v8::Value>::New(m_pIsolate, lpPropValue->DirectGetValue()); | |
| 142 return (FX_BOOL)hObject.As<v8::Object>()->Set( | |
| 143 v8::String::NewFromUtf8(m_pIsolate, szPropName.c_str(), | |
| 144 v8::String::kNormalString, | |
| 145 szPropName.GetLength()), | |
| 146 hPropValue); | |
| 147 } | |
| 148 | |
| 149 FX_BOOL CFXJSE_Value::GetObjectProperty(const CFX_ByteStringC& szPropName, | |
| 150 CFXJSE_Value* lpPropValue) { | |
| 151 ASSERT(lpPropValue); | |
| 152 CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); | |
| 153 v8::Local<v8::Value> hObject = | |
| 154 v8::Local<v8::Value>::New(m_pIsolate, m_hValue); | |
| 155 if (!hObject->IsObject()) | |
| 156 return FALSE; | |
| 157 | |
| 158 v8::Local<v8::Value> hPropValue = | |
| 159 hObject.As<v8::Object>()->Get(v8::String::NewFromUtf8( | |
| 160 m_pIsolate, szPropName.c_str(), v8::String::kNormalString, | |
| 161 szPropName.GetLength())); | |
| 162 lpPropValue->ForceSetValue(hPropValue); | |
| 163 return TRUE; | |
| 164 } | |
| 165 | |
| 166 FX_BOOL CFXJSE_Value::SetObjectProperty(uint32_t uPropIdx, | |
| 167 CFXJSE_Value* lpPropValue) { | |
| 168 CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); | |
| 169 v8::Local<v8::Value> hObject = | |
| 170 v8::Local<v8::Value>::New(m_pIsolate, m_hValue); | |
| 171 if (!hObject->IsObject()) | |
| 172 return FALSE; | |
| 173 | |
| 174 v8::Local<v8::Value> hPropValue = | |
| 175 v8::Local<v8::Value>::New(m_pIsolate, lpPropValue->DirectGetValue()); | |
| 176 return (FX_BOOL)hObject.As<v8::Object>()->Set(uPropIdx, hPropValue); | |
| 177 } | |
| 178 | |
| 179 FX_BOOL CFXJSE_Value::GetObjectPropertyByIdx(uint32_t uPropIdx, | |
| 180 CFXJSE_Value* lpPropValue) { | |
| 181 CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); | |
| 182 v8::Local<v8::Value> hObject = | |
| 183 v8::Local<v8::Value>::New(m_pIsolate, m_hValue); | |
| 184 if (!hObject->IsObject()) | |
| 185 return FALSE; | |
| 186 | |
| 187 v8::Local<v8::Value> hPropValue = hObject.As<v8::Object>()->Get(uPropIdx); | |
| 188 lpPropValue->ForceSetValue(hPropValue); | |
| 189 return TRUE; | |
| 190 } | |
| 191 | |
| 192 FX_BOOL CFXJSE_Value::DeleteObjectProperty(const CFX_ByteStringC& szPropName) { | |
| 193 CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); | |
| 194 v8::Local<v8::Value> hObject = | |
| 195 v8::Local<v8::Value>::New(m_pIsolate, m_hValue); | |
| 196 if (!hObject->IsObject()) | |
| 197 return FALSE; | |
| 198 | |
| 199 hObject.As<v8::Object>()->Delete(v8::String::NewFromUtf8( | |
| 200 m_pIsolate, szPropName.c_str(), v8::String::kNormalString, | |
| 201 szPropName.GetLength())); | |
| 202 return TRUE; | |
| 203 } | |
| 204 | |
| 205 FX_BOOL CFXJSE_Value::HasObjectOwnProperty(const CFX_ByteStringC& szPropName, | |
| 206 FX_BOOL bUseTypeGetter) { | |
| 207 CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); | |
| 208 v8::Local<v8::Value> hObject = | |
| 209 v8::Local<v8::Value>::New(m_pIsolate, m_hValue); | |
| 210 if (!hObject->IsObject()) | |
| 211 return FALSE; | |
| 212 | |
| 213 v8::Local<v8::String> hKey = v8::String::NewFromUtf8( | |
| 214 m_pIsolate, szPropName.c_str(), v8::String::kNormalString, | |
| 215 szPropName.GetLength()); | |
| 216 return hObject.As<v8::Object>()->HasRealNamedProperty(hKey) || | |
| 217 (bUseTypeGetter && | |
| 218 hObject.As<v8::Object>() | |
| 219 ->HasOwnProperty(m_pIsolate->GetCurrentContext(), hKey) | |
| 220 .FromMaybe(false)); | |
| 221 } | |
| 222 | |
| 223 FX_BOOL CFXJSE_Value::SetObjectOwnProperty(const CFX_ByteStringC& szPropName, | |
| 224 CFXJSE_Value* lpPropValue) { | |
| 225 ASSERT(lpPropValue); | |
| 226 CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); | |
| 227 v8::Local<v8::Value> hObject = | |
| 228 v8::Local<v8::Value>::New(m_pIsolate, m_hValue); | |
| 229 if (!hObject->IsObject()) | |
| 230 return FALSE; | |
| 231 | |
| 232 v8::Local<v8::Value> pValue = | |
| 233 v8::Local<v8::Value>::New(m_pIsolate, lpPropValue->m_hValue); | |
| 234 return hObject.As<v8::Object>() | |
| 235 ->DefineOwnProperty( | |
| 236 m_pIsolate->GetCurrentContext(), | |
| 237 v8::String::NewFromUtf8(m_pIsolate, szPropName.c_str(), | |
| 238 v8::String::kNormalString, | |
| 239 szPropName.GetLength()), | |
| 240 pValue) | |
| 241 .FromMaybe(false); | |
| 242 } | |
| 243 | |
| 244 FX_BOOL CFXJSE_Value::SetFunctionBind(CFXJSE_Value* lpOldFunction, | |
| 245 CFXJSE_Value* lpNewThis) { | |
| 246 ASSERT(lpOldFunction && lpNewThis); | |
| 247 | |
| 248 CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); | |
| 249 v8::Local<v8::Value> rgArgs[2]; | |
| 250 v8::Local<v8::Value> hOldFunction = | |
| 251 v8::Local<v8::Value>::New(m_pIsolate, lpOldFunction->DirectGetValue()); | |
| 252 if (hOldFunction.IsEmpty() || !hOldFunction->IsFunction()) | |
| 253 return FALSE; | |
| 254 | |
| 255 rgArgs[0] = hOldFunction; | |
| 256 v8::Local<v8::Value> hNewThis = | |
| 257 v8::Local<v8::Value>::New(m_pIsolate, lpNewThis->DirectGetValue()); | |
| 258 if (hNewThis.IsEmpty()) | |
| 259 return FALSE; | |
| 260 | |
| 261 rgArgs[1] = hNewThis; | |
| 262 v8::Local<v8::String> hBinderFuncSource = | |
| 263 v8::String::NewFromUtf8(m_pIsolate, | |
| 264 "(function (oldfunction, newthis) { return " | |
| 265 "oldfunction.bind(newthis); })"); | |
| 266 v8::Local<v8::Function> hBinderFunc = | |
| 267 v8::Script::Compile(hBinderFuncSource)->Run().As<v8::Function>(); | |
| 268 v8::Local<v8::Value> hBoundFunction = | |
| 269 hBinderFunc->Call(m_pIsolate->GetCurrentContext()->Global(), 2, rgArgs); | |
| 270 if (hBoundFunction.IsEmpty() || !hBoundFunction->IsFunction()) | |
| 271 return FALSE; | |
| 272 | |
| 273 m_hValue.Reset(m_pIsolate, hBoundFunction); | |
| 274 return TRUE; | |
| 275 } | |
| 276 | |
| 277 #define FXJSE_INVALID_PTR ((void*)(intptr_t)-1) | |
| 278 FX_BOOL CFXJSE_Value::Call(CFXJSE_Value* lpReceiver, | |
| 279 CFXJSE_Value* lpRetValue, | |
| 280 uint32_t nArgCount, | |
| 281 CFXJSE_Value** lpArgs) { | |
| 282 CFXJSE_ScopeUtil_IsolateHandleRootContext scope(m_pIsolate); | |
| 283 v8::Local<v8::Value> hFunctionValue = | |
| 284 v8::Local<v8::Value>::New(m_pIsolate, DirectGetValue()); | |
| 285 v8::Local<v8::Object> hFunctionObject = | |
| 286 !hFunctionValue.IsEmpty() && hFunctionValue->IsObject() | |
| 287 ? hFunctionValue.As<v8::Object>() | |
| 288 : v8::Local<v8::Object>(); | |
| 289 | |
| 290 v8::TryCatch trycatch(m_pIsolate); | |
| 291 if (hFunctionObject.IsEmpty() || !hFunctionObject->IsCallable()) { | |
| 292 if (lpRetValue) | |
| 293 lpRetValue->ForceSetValue(FXJSE_CreateReturnValue(m_pIsolate, trycatch)); | |
| 294 return FALSE; | |
| 295 } | |
| 296 | |
| 297 v8::Local<v8::Value> hReturnValue; | |
| 298 v8::Local<v8::Value>* lpLocalArgs = NULL; | |
| 299 if (nArgCount) { | |
| 300 lpLocalArgs = FX_Alloc(v8::Local<v8::Value>, nArgCount); | |
| 301 for (uint32_t i = 0; i < nArgCount; i++) { | |
| 302 new (lpLocalArgs + i) v8::Local<v8::Value>; | |
| 303 CFXJSE_Value* lpArg = lpArgs[i]; | |
| 304 if (lpArg) { | |
| 305 lpLocalArgs[i] = | |
| 306 v8::Local<v8::Value>::New(m_pIsolate, lpArg->DirectGetValue()); | |
| 307 } | |
| 308 if (lpLocalArgs[i].IsEmpty()) { | |
| 309 lpLocalArgs[i] = v8::Undefined(m_pIsolate); | |
| 310 } | |
| 311 } | |
| 312 } | |
| 313 | |
| 314 FX_BOOL bRetValue = TRUE; | |
| 315 if (lpReceiver == FXJSE_INVALID_PTR) { | |
| 316 v8::MaybeLocal<v8::Value> maybe_retvalue = | |
| 317 hFunctionObject->CallAsConstructor(m_pIsolate->GetCurrentContext(), | |
| 318 nArgCount, lpLocalArgs); | |
| 319 hReturnValue = maybe_retvalue.FromMaybe(v8::Local<v8::Value>()); | |
| 320 } else { | |
| 321 v8::Local<v8::Value> hReceiver; | |
| 322 if (lpReceiver) { | |
| 323 hReceiver = | |
| 324 v8::Local<v8::Value>::New(m_pIsolate, lpReceiver->DirectGetValue()); | |
| 325 } | |
| 326 if (hReceiver.IsEmpty() || !hReceiver->IsObject()) | |
| 327 hReceiver = v8::Object::New(m_pIsolate); | |
| 328 | |
| 329 v8::MaybeLocal<v8::Value> maybe_retvalue = hFunctionObject->CallAsFunction( | |
| 330 m_pIsolate->GetCurrentContext(), hReceiver, nArgCount, lpLocalArgs); | |
| 331 hReturnValue = maybe_retvalue.FromMaybe(v8::Local<v8::Value>()); | |
| 332 } | |
| 333 | |
| 334 if (trycatch.HasCaught()) { | |
| 335 hReturnValue = FXJSE_CreateReturnValue(m_pIsolate, trycatch); | |
| 336 bRetValue = FALSE; | |
| 337 } | |
| 338 | |
| 339 if (lpRetValue) | |
| 340 lpRetValue->ForceSetValue(hReturnValue); | |
| 341 | |
| 342 if (lpLocalArgs) { | |
| 343 for (uint32_t i = 0; i < nArgCount; i++) | |
| 344 lpLocalArgs[i].~Local(); | |
| 345 FX_Free(lpLocalArgs); | |
| 346 } | |
| 347 return bRetValue; | |
| 348 } | |
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Chromium Code Reviews
Issue 2136213002:
Rename fxjse/ to fxjs/ update files to match class names. (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@master