Replace v8::Handle with v8::Local and v8::Persistent with v8::Global
[pdfium.git] / fpdfsdk / src / jsapi / fxjs_v8.cpp
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 "../../../core/include/fxcrt/fx_basic.h"
8 #include "../../../core/include/fxcrt/fx_ext.h" 
9 #include "../../include/jsapi/fxjs_v8.h"
10 #include "../../include/fsdk_define.h"
11 #include "time.h"
12 #include <cmath>
13 #include <limits>
14
15 #define VALUE_NAME_STRING               L"string"
16 #define VALUE_NAME_NUMBER               L"number"
17 #define VALUE_NAME_BOOLEAN              L"boolean"
18 #define VALUE_NAME_DATE                 L"date"
19 #define VALUE_NAME_OBJECT               L"object"
20 #define VALUE_NAME_FXOBJ                L"fxobj"
21 #define VALUE_NAME_NULL                 L"null"
22 #define VALUE_NAME_UNDEFINED    L"undefined"
23
24 const static FX_DWORD g_nan[2] = {0,0x7FF80000 };
25 static double GetNan()
26 {
27   return *(double*)g_nan;
28 }
29
30
31 class CJS_PrivateData
32 {
33 public:
34         CJS_PrivateData():ObjDefID(-1), pPrivate(NULL) {}
35         int ObjDefID;
36         FX_LPVOID       pPrivate;
37 };
38
39
40 class CJS_ObjDefintion
41 {
42 public:
43         CJS_ObjDefintion(v8::Isolate* isolate, const wchar_t* sObjName, FXJSOBJTYPE eObjType, LP_CONSTRUCTOR pConstructor, LP_DESTRUCTOR pDestructor, unsigned bApplyNew):
44           objName(sObjName), objType(eObjType), m_pConstructor(pConstructor), m_pDestructor(pDestructor),m_bApplyNew(bApplyNew),m_bSetAsGlobalObject(FALSE)
45           {
46                   v8::Isolate::Scope isolate_scope(isolate);
47                   v8::HandleScope handle_scope(isolate);
48
49                   v8::Local<v8::ObjectTemplate> objTemplate = v8::ObjectTemplate::New(isolate);
50                   objTemplate->SetInternalFieldCount(2);
51                   m_objTemplate.Reset(isolate, objTemplate);
52
53                  //Document as the global object.
54                   if(FXSYS_wcscmp(sObjName, L"Document") == 0)
55                   {
56                          m_bSetAsGlobalObject = TRUE;
57                   }
58
59           }
60           ~CJS_ObjDefintion()
61           {
62                   m_objTemplate.Reset();
63                   m_StaticObj.Reset();
64           }
65 public:
66         const wchar_t* objName;
67         FXJSOBJTYPE objType;
68         LP_CONSTRUCTOR m_pConstructor;
69         LP_DESTRUCTOR m_pDestructor;
70         unsigned m_bApplyNew;
71         FX_BOOL m_bSetAsGlobalObject;
72
73         v8::Global<v8::ObjectTemplate> m_objTemplate;
74         v8::Global<v8::Object> m_StaticObj;
75 };
76
77 int JS_DefineObj(IJS_Runtime* pJSRuntime, const wchar_t* sObjName, FXJSOBJTYPE eObjType, LP_CONSTRUCTOR pConstructor, LP_DESTRUCTOR pDestructor, unsigned bApplyNew)
78 {
79         v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
80         v8::Isolate::Scope isolate_scope(isolate);
81         v8::HandleScope handle_scope(isolate);
82         CFX_PtrArray* pArray = (CFX_PtrArray*)isolate->GetData(0);
83         if(!pArray)
84         {
85                 pArray = new CFX_PtrArray();
86                 isolate->SetData(0, pArray);
87         }
88         CJS_ObjDefintion* pObjDef = new CJS_ObjDefintion(isolate, sObjName, eObjType, pConstructor, pDestructor, bApplyNew);
89         pArray->Add(pObjDef);
90         return pArray->GetSize()-1;
91 }
92
93 int JS_DefineObjMethod(IJS_Runtime* pJSRuntime, int nObjDefnID, const wchar_t* sMethodName, v8::FunctionCallback pMethodCall)
94 {
95         v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
96         v8::Isolate::Scope isolate_scope(isolate);
97         v8::HandleScope handle_scope(isolate);
98
99         CFX_WideString ws = CFX_WideString(sMethodName);
100         CFX_ByteString bsMethodName = ws.UTF8Encode();
101
102         CFX_PtrArray* pArray = (CFX_PtrArray*)isolate->GetData(0);
103         if(!pArray) return 0;
104
105         if(nObjDefnID<0 || nObjDefnID>= pArray->GetSize()) return 0;
106         CJS_ObjDefintion* pObjDef = (CJS_ObjDefintion*)pArray->GetAt(nObjDefnID);
107         v8::Local<v8::ObjectTemplate> objTemp = v8::Local<v8::ObjectTemplate>::New(isolate, pObjDef->m_objTemplate);
108         objTemp->Set(v8::String::NewFromUtf8(isolate, FX_LPCSTR(bsMethodName), v8::NewStringType::kNormal).ToLocalChecked(), v8::FunctionTemplate::New(isolate, pMethodCall), v8::ReadOnly);
109         pObjDef->m_objTemplate.Reset(isolate,objTemp);
110         return 0;
111 }
112
113 int JS_DefineObjProperty(IJS_Runtime* pJSRuntime, int nObjDefnID, const wchar_t* sPropName, v8::AccessorGetterCallback pPropGet, v8::AccessorSetterCallback pPropPut)
114 {
115         v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
116         v8::Isolate::Scope isolate_scope(isolate);
117         v8::HandleScope handle_scope(isolate);
118
119         CFX_WideString ws = CFX_WideString(sPropName);
120         CFX_ByteString bsPropertyName = ws.UTF8Encode();
121
122         CFX_PtrArray* pArray = (CFX_PtrArray*)isolate->GetData(0);
123         if(!pArray) return 0;
124
125         if(nObjDefnID<0 || nObjDefnID>= pArray->GetSize()) return 0;
126         CJS_ObjDefintion* pObjDef = (CJS_ObjDefintion*)pArray->GetAt(nObjDefnID);
127         v8::Local<v8::ObjectTemplate> objTemp = v8::Local<v8::ObjectTemplate>::New(isolate, pObjDef->m_objTemplate);
128         objTemp->SetAccessor(v8::String::NewFromUtf8(isolate, FX_LPCSTR(bsPropertyName), v8::NewStringType::kNormal).ToLocalChecked(), pPropGet, pPropPut);
129         pObjDef->m_objTemplate.Reset(isolate,objTemp);
130         return 0;
131 }
132
133 int     JS_DefineObjAllProperties(IJS_Runtime* pJSRuntime, int nObjDefnID, v8::NamedPropertyQueryCallback pPropQurey, v8::NamedPropertyGetterCallback pPropGet, v8::NamedPropertySetterCallback pPropPut, v8::NamedPropertyDeleterCallback pPropDel)
134 {
135         v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
136         v8::Isolate::Scope isolate_scope(isolate);
137         v8::HandleScope handle_scope(isolate);
138
139         CFX_PtrArray* pArray = (CFX_PtrArray*)isolate->GetData(0);
140         if(!pArray) return 0;
141
142         if(nObjDefnID<0 || nObjDefnID>= pArray->GetSize()) return 0;
143         CJS_ObjDefintion* pObjDef = (CJS_ObjDefintion*)pArray->GetAt(nObjDefnID);
144         v8::Local<v8::ObjectTemplate> objTemp = v8::Local<v8::ObjectTemplate>::New(isolate, pObjDef->m_objTemplate);
145         objTemp->SetNamedPropertyHandler(pPropGet, pPropPut, pPropQurey, pPropDel);
146         pObjDef->m_objTemplate.Reset(isolate,objTemp);
147         return 0;
148 }
149
150 int JS_DefineObjConst(IJS_Runtime* pJSRuntime, int nObjDefnID, const wchar_t* sConstName, v8::Local<v8::Value> pDefault)
151 {
152         v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
153         v8::Isolate::Scope isolate_scope(isolate);
154         v8::HandleScope handle_scope(isolate);
155
156         CFX_PtrArray* pArray = (CFX_PtrArray*)isolate->GetData(0);
157         if(!pArray) return 0;
158
159         CFX_WideString ws = CFX_WideString(sConstName);
160         CFX_ByteString bsConstName = ws.UTF8Encode();
161
162         if(nObjDefnID<0 || nObjDefnID>= pArray->GetSize()) return 0;
163         CJS_ObjDefintion* pObjDef = (CJS_ObjDefintion*)pArray->GetAt(nObjDefnID);
164         v8::Local<v8::ObjectTemplate> objTemp = v8::Local<v8::ObjectTemplate>::New(isolate, pObjDef->m_objTemplate);
165         objTemp->Set(isolate, FX_LPCSTR(bsConstName), pDefault);
166         pObjDef->m_objTemplate.Reset(isolate,objTemp);
167         return 0;
168 }
169
170 static v8::Global<v8::ObjectTemplate>& _getGlobalObjectTemplate(IJS_Runtime* pJSRuntime)
171 {
172         v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
173         v8::Isolate::Scope isolate_scope(isolate);
174         v8::HandleScope handle_scope(isolate);
175
176         CFX_PtrArray* pArray = (CFX_PtrArray*)isolate->GetData(0);
177         ASSERT(pArray != NULL);
178         for(int i=0; i<pArray->GetSize(); i++)
179         {
180                 CJS_ObjDefintion* pObjDef = (CJS_ObjDefintion*)pArray->GetAt(i);
181                 if(pObjDef->m_bSetAsGlobalObject)
182                         return pObjDef->m_objTemplate;
183         }
184         static v8::Global<v8::ObjectTemplate> gloabalObjectTemplate;
185         return gloabalObjectTemplate;
186 }
187
188 int JS_DefineGlobalMethod(IJS_Runtime* pJSRuntime, const wchar_t* sMethodName, v8::FunctionCallback pMethodCall)
189 {
190         v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
191         v8::Isolate::Scope isolate_scope(isolate);
192         v8::HandleScope handle_scope(isolate);
193
194         CFX_WideString ws = CFX_WideString(sMethodName);
195         CFX_ByteString bsMethodName = ws.UTF8Encode();
196
197         v8::Local<v8::FunctionTemplate> funTempl = v8::FunctionTemplate::New(isolate, pMethodCall);
198         v8::Local<v8::ObjectTemplate> objTemp;
199
200         v8::Global<v8::ObjectTemplate>& globalObjTemp = _getGlobalObjectTemplate(pJSRuntime);
201         if(globalObjTemp.IsEmpty())
202                 objTemp = v8::ObjectTemplate::New(isolate);
203         else
204                 objTemp = v8::Local<v8::ObjectTemplate>::New(isolate, globalObjTemp);
205         objTemp->Set(v8::String::NewFromUtf8(isolate, FX_LPCSTR(bsMethodName), v8::NewStringType::kNormal).ToLocalChecked(), funTempl, v8::ReadOnly);
206
207         globalObjTemp.Reset(isolate,objTemp);
208
209         return 0;
210 }
211
212 int JS_DefineGlobalConst(IJS_Runtime* pJSRuntime, const wchar_t* sConstName, v8::Local<v8::Value> pDefault)
213 {
214         v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
215         v8::Isolate::Scope isolate_scope(isolate);
216         v8::HandleScope handle_scope(isolate);
217
218         CFX_WideString ws = CFX_WideString(sConstName);
219         CFX_ByteString bsConst= ws.UTF8Encode();
220
221         v8::Local<v8::ObjectTemplate> objTemp;
222
223         v8::Global<v8::ObjectTemplate>& globalObjTemp = _getGlobalObjectTemplate(pJSRuntime);
224         if(globalObjTemp.IsEmpty())
225                 objTemp = v8::ObjectTemplate::New(isolate);
226         else
227                 objTemp = v8::Local<v8::ObjectTemplate>::New(isolate, globalObjTemp);
228         objTemp->Set(v8::String::NewFromUtf8(isolate, FX_LPCSTR(bsConst), v8::NewStringType::kNormal).ToLocalChecked(), pDefault, v8::ReadOnly);
229
230         globalObjTemp.Reset(isolate,objTemp);
231
232         return 0;
233 }
234
235
236 void JS_InitialRuntime(IJS_Runtime* pJSRuntime,IFXJS_Runtime* pFXRuntime, IFXJS_Context* context, v8::Global<v8::Context>& v8PersistentContext)
237 {
238         v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
239         v8::Isolate::Scope isolate_scope(isolate);
240         v8::HandleScope handle_scope(isolate);
241
242         v8::Global<v8::ObjectTemplate>& globalObjTemp = _getGlobalObjectTemplate(pJSRuntime);
243         v8::Local<v8::Context> v8Context = v8::Context::New(isolate, NULL, v8::Local<v8::ObjectTemplate>::New(isolate, globalObjTemp));
244         v8::Context::Scope context_scope(v8Context);
245
246         v8::Local<v8::External> ptr = v8::External::New(isolate, pFXRuntime);
247         v8Context->SetEmbedderData(1, ptr);
248
249         CFX_PtrArray* pArray = (CFX_PtrArray*)isolate->GetData(0);
250         if(!pArray) return;
251
252         for(int i=0; i<pArray->GetSize(); i++)
253         {
254                 CJS_ObjDefintion* pObjDef = (CJS_ObjDefintion*)pArray->GetAt(i);
255                 CFX_WideString ws = CFX_WideString(pObjDef->objName);
256                 CFX_ByteString bs = ws.UTF8Encode();
257                 v8::Local<v8::String> objName = v8::String::NewFromUtf8(isolate, bs.c_str(), v8::NewStringType::kNormal, bs.GetLength()).ToLocalChecked();
258
259
260                 if(pObjDef->objType == JS_DYNAMIC)
261                 {
262                         //Document is set as global object, need to construct it first.
263                         if(ws.Equal(L"Document"))
264                         {
265
266                                 CJS_PrivateData* pPrivateData = new CJS_PrivateData;
267                                 pPrivateData->ObjDefID = i;
268
269                                 v8Context->Global()->GetPrototype()->ToObject(v8Context).ToLocalChecked()->SetAlignedPointerInInternalField(0, pPrivateData);
270
271                                 if(pObjDef->m_pConstructor)
272                                         pObjDef->m_pConstructor(context, v8Context->Global()->GetPrototype()->ToObject(v8Context).ToLocalChecked(), v8Context->Global()->GetPrototype()->ToObject(v8Context).ToLocalChecked());
273                         }
274                 }
275                 else
276                 {
277                         v8::Local<v8::Object> obj = JS_NewFxDynamicObj(pJSRuntime, context, i);
278                         v8Context->Global()->Set(v8Context, objName, obj).FromJust();
279                         pObjDef->m_StaticObj.Reset(isolate, obj);
280                 }
281         }
282         v8PersistentContext.Reset(isolate, v8Context);
283 }
284
285 void JS_ReleaseRuntime(IJS_Runtime* pJSRuntime, v8::Global<v8::Context>& v8PersistentContext)
286 {
287         v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
288         v8::Isolate::Scope isolate_scope(isolate);
289         v8::HandleScope handle_scope(isolate);
290         v8::Local<v8::Context> context = v8::Local<v8::Context>::New(isolate, v8PersistentContext);
291         v8::Context::Scope context_scope(context);
292
293         CFX_PtrArray* pArray = (CFX_PtrArray*)isolate->GetData(0);
294         if(!pArray) return ;
295
296         for(int i=0; i<pArray->GetSize(); i++)
297         {
298                 CJS_ObjDefintion* pObjDef = (CJS_ObjDefintion*)pArray->GetAt(i);
299                 if(!pObjDef->m_StaticObj.IsEmpty())
300                 {
301                         v8::Local<v8::Object> pObj = v8::Local<v8::Object>::New(isolate, pObjDef->m_StaticObj);
302                         if(pObjDef->m_pDestructor)
303                                 pObjDef->m_pDestructor(pObj);
304                         JS_FreePrivate(pObj);
305                 }
306                 delete pObjDef;
307         }
308         delete pArray;
309         isolate->SetData(0,NULL);
310 }
311
312 void JS_Initial() 
313 {
314 }
315 void JS_Release()
316 {
317
318 }
319 int JS_Parse(IJS_Runtime* pJSRuntime, IFXJS_Context* pJSContext, const wchar_t* script, long length, FXJSErr* perror)
320 {
321         v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
322         v8::Isolate::Scope isolate_scope(isolate);
323         v8::TryCatch try_catch(isolate);
324
325         CFX_WideString wsScript(script);
326         CFX_ByteString bsScript = wsScript.UTF8Encode();
327
328
329         v8::Local<v8::Context> context = isolate->GetCurrentContext();
330         v8::Local<v8::Script> compiled_script;
331         if (!v8::Script::Compile(context, v8::String::NewFromUtf8(isolate, bsScript.c_str(), v8::NewStringType::kNormal, bsScript.GetLength()).ToLocalChecked()).ToLocal(&compiled_script)) {
332                 v8::String::Utf8Value error(try_catch.Exception());
333                 return -1;
334         }
335         return 0;
336 }
337
338 int JS_Execute(IJS_Runtime* pJSRuntime, IFXJS_Context* pJSContext, const wchar_t* script, long length, FXJSErr* perror)
339 {
340         v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
341         v8::Isolate::Scope isolate_scope(isolate);
342         v8::TryCatch try_catch(isolate);
343
344         CFX_WideString wsScript(script);
345         CFX_ByteString bsScript = wsScript.UTF8Encode();
346
347         v8::Local<v8::Context> context = isolate->GetCurrentContext();
348         v8::Local<v8::Script> compiled_script;
349         if (!v8::Script::Compile(context, v8::String::NewFromUtf8(isolate, bsScript.c_str(), v8::NewStringType::kNormal, bsScript.GetLength()).ToLocalChecked()).ToLocal(&compiled_script)) {
350                 v8::String::Utf8Value error(try_catch.Exception());
351                 return -1;
352         }
353
354         v8::Local<v8::Value> result;
355         if (!compiled_script->Run(context).ToLocal(&result)) {
356                 v8::String::Utf8Value error(try_catch.Exception());
357                 return -1;
358         }
359         return 0;
360 }
361
362 v8::Local<v8::Object> JS_NewFxDynamicObj(IJS_Runtime* pJSRuntime, IFXJS_Context* pJSContext, int nObjDefnID)
363 {
364         v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
365         v8::Isolate::Scope isolate_scope(isolate);
366         v8::Local<v8::Context> context = isolate->GetCurrentContext();
367         if(-1 == nObjDefnID)
368         {
369                 v8::Local<v8::ObjectTemplate> objTempl = v8::ObjectTemplate::New(isolate);
370                 v8::Local<v8::Object> obj;
371                 if (objTempl->NewInstance(context).ToLocal(&obj)) return obj;
372                 return v8::Local<v8::Object>();
373         }
374
375         CFX_PtrArray* pArray = (CFX_PtrArray*)isolate->GetData(0);
376         if(!pArray) return v8::Local<v8::Object>();
377
378
379         if(nObjDefnID<0 || nObjDefnID>= pArray->GetSize()) return v8::Local<v8::Object>();
380         CJS_ObjDefintion* pObjDef = (CJS_ObjDefintion*)pArray->GetAt(nObjDefnID);
381
382         v8::Local<v8::ObjectTemplate> objTemp = v8::Local<v8::ObjectTemplate>::New(isolate, pObjDef->m_objTemplate);
383         v8::Local<v8::Object> obj;
384         if (!objTemp->NewInstance(context).ToLocal(&obj)) return v8::Local<v8::Object>();
385
386         CJS_PrivateData* pPrivateData = new CJS_PrivateData;
387         pPrivateData->ObjDefID = nObjDefnID;
388
389         obj->SetAlignedPointerInInternalField(0, pPrivateData);
390         if(pObjDef->m_pConstructor)
391                 pObjDef->m_pConstructor(pJSContext, obj, context->Global()->GetPrototype()->ToObject(context).ToLocalChecked());
392
393         return obj;
394 }
395
396 v8::Local<v8::Object> JS_GetStaticObj(IJS_Runtime* pJSRuntime, int nObjDefnID)
397 {
398         v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
399         v8::Isolate::Scope isolate_scope(isolate);
400
401         CFX_PtrArray* pArray = (CFX_PtrArray*)isolate->GetData(0);
402         if(!pArray) return v8::Local<v8::Object>();
403
404         if(nObjDefnID<0 || nObjDefnID>= pArray->GetSize()) return v8::Local<v8::Object>();
405         CJS_ObjDefintion* pObjDef = (CJS_ObjDefintion*)pArray->GetAt(nObjDefnID);
406         v8::Local<v8::Object> obj = v8::Local<v8::Object>::New(isolate,pObjDef->m_StaticObj);
407         return obj;
408 }
409
410 void JS_SetThisObj(IJS_Runtime* pJSRuntime, int nThisObjID)
411 {
412         //Do nothing.
413 }
414 v8::Local<v8::Object>   JS_GetThisObj(IJS_Runtime * pJSRuntime)
415 {
416         //Return the global object.
417         v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
418         v8::Isolate::Scope isolate_scope(isolate);
419
420         CFX_PtrArray* pArray = (CFX_PtrArray*)isolate->GetData(0);
421         if(!pArray) return v8::Local<v8::Object>();
422
423         v8::Local<v8::Context> context = isolate->GetCurrentContext();
424         return context->Global()->GetPrototype()->ToObject(context).ToLocalChecked();
425 }
426
427 int     JS_GetObjDefnID(v8::Local<v8::Object> pObj)
428 {
429         if(pObj.IsEmpty() || !pObj->InternalFieldCount()) return -1;
430         CJS_PrivateData* pPrivateData = (CJS_PrivateData*)pObj->GetAlignedPointerFromInternalField(0);
431         if(pPrivateData)
432                 return pPrivateData->ObjDefID;
433         return -1;
434 }
435
436 IJS_Runtime* JS_GetRuntime(v8::Local<v8::Object> pObj)
437 {
438         if(pObj.IsEmpty()) return NULL;
439         v8::Local<v8::Context> context = pObj->CreationContext();
440         if(context.IsEmpty()) return NULL;
441         return context->GetIsolate();
442 }
443
444 int JS_GetObjDefnID(IJS_Runtime * pJSRuntime, const wchar_t* pObjName)
445 {
446         v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
447         v8::Isolate::Scope isolate_scope(isolate);
448
449         CFX_PtrArray* pArray = (CFX_PtrArray*)isolate->GetData(0);
450         if(!pArray) return -1;
451
452         for(int i=0; i<pArray->GetSize(); i++)
453         {
454                 CJS_ObjDefintion* pObjDef = (CJS_ObjDefintion*)pArray->GetAt(i);
455                 if(FXSYS_wcscmp(pObjDef->objName, pObjName) == 0)
456                         return i;
457         }
458         return -1;
459 }
460
461 void JS_Error(v8::Isolate* isolate, const CFX_WideString& message)
462 {
463     // Conversion from pdfium's wchar_t wide-strings to v8's uint16_t
464     // wide-strings isn't handled by v8, so use UTF8 as a common
465     // intermediate format.
466     CFX_ByteString utf8_message = message.UTF8Encode();
467     isolate->ThrowException(v8::String::NewFromUtf8(isolate,
468                                                     utf8_message.c_str(),
469                                                     v8::NewStringType::kNormal).ToLocalChecked());
470 }
471
472 unsigned JS_CalcHash(const wchar_t* main, unsigned nLen)
473 {
474         return (unsigned)FX_HashCode_String_GetW(main, nLen);
475 }
476
477 unsigned JS_CalcHash(const wchar_t* main)
478 {
479         return (unsigned)FX_HashCode_String_GetW(main, FXSYS_wcslen(main));
480 }
481 const wchar_t*  JS_GetTypeof(v8::Local<v8::Value> pObj)
482 {
483         if(pObj.IsEmpty()) return NULL;
484         if(pObj->IsString())
485                 return VALUE_NAME_STRING;
486         if(pObj->IsNumber())
487                 return VALUE_NAME_NUMBER;
488         if(pObj->IsBoolean())
489                 return VALUE_NAME_BOOLEAN;
490         if(pObj->IsDate())
491                 return VALUE_NAME_DATE;
492         if(pObj->IsObject())
493                 return VALUE_NAME_OBJECT;
494         if(pObj->IsNull())
495                 return VALUE_NAME_NULL;
496         if(pObj->IsUndefined())
497                 return VALUE_NAME_UNDEFINED;
498         return NULL;
499
500 }
501 void JS_SetPrivate(v8::Local<v8::Object> pObj, void* p)
502 {
503         JS_SetPrivate(NULL, pObj, p);
504 }
505
506 void* JS_GetPrivate(v8::Local<v8::Object> pObj)
507 {
508         return JS_GetPrivate(NULL,pObj);
509 }
510
511 void JS_SetPrivate(IJS_Runtime* pJSRuntime, v8::Local<v8::Object> pObj, void* p)
512 {
513         if(pObj.IsEmpty() || !pObj->InternalFieldCount()) return;
514         CJS_PrivateData* pPrivateData  = (CJS_PrivateData*)pObj->GetAlignedPointerFromInternalField(0);
515         if(!pPrivateData) return;
516         pPrivateData->pPrivate = p;
517 }
518
519 void* JS_GetPrivate(IJS_Runtime* pJSRuntime, v8::Local<v8::Object> pObj)
520 {
521         if(pObj.IsEmpty()) return NULL;
522         CJS_PrivateData* pPrivateData  = NULL;
523         if(pObj->InternalFieldCount())
524                 pPrivateData = (CJS_PrivateData*)pObj->GetAlignedPointerFromInternalField(0);
525         else
526         {
527                 //It could be a global proxy object.
528                 v8::Local<v8::Value> v = pObj->GetPrototype();
529                 v8::Isolate* isolate = (v8::Isolate*)pJSRuntime;
530                 v8::Local<v8::Context> context = isolate->GetCurrentContext();
531                 if(v->IsObject())
532                         pPrivateData = (CJS_PrivateData*)v->ToObject(context).ToLocalChecked()->GetAlignedPointerFromInternalField(0);
533         }
534         if(!pPrivateData) return NULL;
535         return pPrivateData->pPrivate;
536 }
537
538 void JS_FreePrivate(void* pPrivateData)
539 {
540         delete (CJS_PrivateData*)pPrivateData;
541 }
542
543 void JS_FreePrivate(v8::Local<v8::Object> pObj)
544 {
545         if(pObj.IsEmpty() || !pObj->InternalFieldCount()) return;
546         JS_FreePrivate(pObj->GetAlignedPointerFromInternalField(0));
547         pObj->SetAlignedPointerInInternalField(0, NULL);
548 }
549
550
551 v8::Local<v8::Value> JS_GetObjectValue(v8::Local<v8::Object> pObj)
552 {
553         return pObj;
554 }
555
556 v8::Local<v8::String> WSToJSString(IJS_Runtime* pJSRuntime, const wchar_t* PropertyName, int Len = -1)
557 {
558         CFX_WideString ws = CFX_WideString(PropertyName,Len);
559         CFX_ByteString bs = ws.UTF8Encode();
560         if(!pJSRuntime) pJSRuntime = v8::Isolate::GetCurrent();
561         return v8::String::NewFromUtf8(pJSRuntime, bs.c_str(), v8::NewStringType::kNormal).ToLocalChecked();
562 }
563
564 v8::Local<v8::Value> JS_GetObjectElement(IJS_Runtime* pJSRuntime, v8::Local<v8::Object> pObj,const wchar_t* PropertyName)
565 {
566         if(pObj.IsEmpty()) return v8::Local<v8::Value>();
567         v8::Local<v8::Value> val;
568         if (!pObj->Get(pJSRuntime->GetCurrentContext(), WSToJSString(pJSRuntime,PropertyName)).ToLocal(&val)) return v8::Local<v8::Value>();
569         return val;
570 }
571
572 v8::Local<v8::Array> JS_GetObjectElementNames(IJS_Runtime* pJSRuntime, v8::Local<v8::Object> pObj)
573 {
574         if(pObj.IsEmpty()) return v8::Local<v8::Array>();
575         v8::Local<v8::Array> val;
576         if (!pObj->GetPropertyNames(pJSRuntime->GetCurrentContext()).ToLocal(&val)) return v8::Local<v8::Array>();
577         return val;
578 }
579
580 void JS_PutObjectString(IJS_Runtime* pJSRuntime,v8::Local<v8::Object> pObj, const wchar_t* PropertyName, const wchar_t* sValue) //VT_string
581 {
582         if(pObj.IsEmpty()) return;
583         pObj->Set(pJSRuntime->GetCurrentContext(), WSToJSString(pJSRuntime, PropertyName), WSToJSString(pJSRuntime, sValue)).FromJust();
584 }
585
586 void JS_PutObjectNumber(IJS_Runtime* pJSRuntime,v8::Local<v8::Object> pObj, const wchar_t* PropertyName, int nValue)
587 {
588         if(pObj.IsEmpty()) return;
589         pObj->Set(pJSRuntime->GetCurrentContext(), WSToJSString(pJSRuntime,PropertyName),v8::Int32::New(pJSRuntime, nValue)).FromJust();
590 }
591
592 void JS_PutObjectNumber(IJS_Runtime* pJSRuntime,v8::Local<v8::Object> pObj, const wchar_t* PropertyName, float fValue)
593 {
594         if(pObj.IsEmpty()) return;
595         pObj->Set(pJSRuntime->GetCurrentContext(), WSToJSString(pJSRuntime,PropertyName),v8::Number::New(pJSRuntime, (double)fValue)).FromJust();
596 }
597
598 void JS_PutObjectNumber(IJS_Runtime* pJSRuntime,v8::Local<v8::Object> pObj, const wchar_t* PropertyName, double dValue)
599 {
600         if(pObj.IsEmpty()) return;
601         pObj->Set(pJSRuntime->GetCurrentContext(), WSToJSString(pJSRuntime,PropertyName),v8::Number::New(pJSRuntime, (double)dValue)).FromJust();
602 }
603
604 void JS_PutObjectBoolean(IJS_Runtime* pJSRuntime,v8::Local<v8::Object> pObj, const wchar_t* PropertyName, bool bValue)
605 {
606         if(pObj.IsEmpty()) return;
607         pObj->Set(pJSRuntime->GetCurrentContext(), WSToJSString(pJSRuntime,PropertyName),v8::Boolean::New(pJSRuntime, bValue)).FromJust();
608 }
609
610 void JS_PutObjectObject(IJS_Runtime* pJSRuntime,v8::Local<v8::Object> pObj, const wchar_t* PropertyName, v8::Local<v8::Object> pPut)
611 {
612         if(pObj.IsEmpty()) return;
613         pObj->Set(pJSRuntime->GetCurrentContext(), WSToJSString(pJSRuntime,PropertyName),pPut).FromJust();
614 }
615
616 void JS_PutObjectNull(IJS_Runtime* pJSRuntime,v8::Local<v8::Object> pObj, const wchar_t* PropertyName)
617 {
618         if(pObj.IsEmpty()) return;
619         pObj->Set(pJSRuntime->GetCurrentContext(), WSToJSString(pJSRuntime,PropertyName),v8::Local<v8::Object>()).FromJust();
620 }
621
622 v8::Local<v8::Array> JS_NewArray(IJS_Runtime* pJSRuntime)
623 {
624         return v8::Array::New(pJSRuntime);
625 }
626
627 unsigned JS_PutArrayElement(IJS_Runtime* pJSRuntime, v8::Local<v8::Array> pArray,unsigned index,v8::Local<v8::Value> pValue,FXJSVALUETYPE eType)
628 {       
629         if(pArray.IsEmpty()) return 0;
630         if (pArray->Set(pJSRuntime->GetCurrentContext(), index, pValue).IsNothing()) return 0;
631         return 1;
632 }
633
634 v8::Local<v8::Value> JS_GetArrayElement(IJS_Runtime* pJSRuntime, v8::Local<v8::Array> pArray,unsigned index)
635 {
636         if(pArray.IsEmpty()) return v8::Local<v8::Value>();
637         v8::Local<v8::Value> val;
638         if (pArray->Get(pJSRuntime->GetCurrentContext(), index).ToLocal(&val)) return v8::Local<v8::Value>();
639         return val;
640 }
641
642 unsigned JS_GetArrayLength(v8::Local<v8::Array> pArray)
643 {
644         if(pArray.IsEmpty()) return 0;
645         return pArray->Length();
646 }
647
648 v8::Local<v8::Value> JS_NewNumber(IJS_Runtime* pJSRuntime,int number)
649 {
650         return v8::Int32::New(pJSRuntime, number);
651 }
652
653 v8::Local<v8::Value> JS_NewNumber(IJS_Runtime* pJSRuntime,double number)
654 {
655         return v8::Number::New(pJSRuntime, number);
656 }
657
658 v8::Local<v8::Value> JS_NewNumber(IJS_Runtime* pJSRuntime,float number)
659 {
660         return v8::Number::New(pJSRuntime, (float)number);
661 }
662
663 v8::Local<v8::Value> JS_NewBoolean(IJS_Runtime* pJSRuntime,bool b)
664 {
665         return v8::Boolean::New(pJSRuntime, b);
666 }
667
668 v8::Local<v8::Value> JS_NewObject(IJS_Runtime* pJSRuntime,v8::Local<v8::Object> pObj)
669 {
670         if(pObj.IsEmpty()) return v8::Local<v8::Value>();
671         return pObj->Clone();
672 }
673
674 v8::Local<v8::Value> JS_NewObject2(IJS_Runtime* pJSRuntime,v8::Local<v8::Array> pObj)
675 {
676         if(pObj.IsEmpty()) return v8::Local<v8::Value>();
677         return pObj->Clone();
678 }
679
680
681 v8::Local<v8::Value> JS_NewString(IJS_Runtime* pJSRuntime,const wchar_t* string)
682 {
683         return WSToJSString(pJSRuntime, string);
684 }
685
686 v8::Local<v8::Value> JS_NewString(IJS_Runtime* pJSRuntime,const wchar_t* string, unsigned nLen)
687 {
688         return WSToJSString(pJSRuntime, string, nLen);
689 }
690
691 v8::Local<v8::Value> JS_NewNull()
692 {
693         return v8::Local<v8::Value>();
694 }
695
696 v8::Local<v8::Value> JS_NewDate(IJS_Runtime* pJSRuntime,double d)
697 {
698         return v8::Date::New(pJSRuntime->GetCurrentContext(), d).ToLocalChecked();
699 }
700
701 v8::Local<v8::Value> JS_NewValue(IJS_Runtime* pJSRuntime)
702 {
703         return v8::Local<v8::Value>();
704 }
705
706 v8::Local<v8::Value> JS_GetListValue(IJS_Runtime* pJSRuntime, v8::Local<v8::Value> pList, int index)
707 {
708
709         v8::Local<v8::Context> context = pJSRuntime->GetCurrentContext();
710         if(!pList.IsEmpty() && pList->IsObject())
711         {
712                 v8::Local<v8::Object> obj;
713                 if (pList->ToObject(context).ToLocal(&obj))
714                 {
715                         v8::Local<v8::Value> val;
716                         if (obj->Get(context, index).ToLocal(&val)) return val;
717                 }
718         }
719         return v8::Local<v8::Value>();
720 }
721
722 int     JS_ToInt32(IJS_Runtime* pJSRuntime, v8::Local<v8::Value> pValue)
723 {
724         if(pValue.IsEmpty()) return 0;
725         v8::Local<v8::Context> context = pJSRuntime->GetCurrentContext();
726         return pValue->ToInt32(context).ToLocalChecked()->Value();
727 }
728
729 bool JS_ToBoolean(IJS_Runtime* pJSRuntime, v8::Local<v8::Value> pValue)
730 {
731         if(pValue.IsEmpty()) return false;
732         v8::Local<v8::Context> context = pJSRuntime->GetCurrentContext();
733         return pValue->ToBoolean(context).ToLocalChecked()->Value();
734 }
735
736 double JS_ToNumber(IJS_Runtime* pJSRuntime, v8::Local<v8::Value> pValue)
737 {
738         if(pValue.IsEmpty()) return 0.0;
739         v8::Local<v8::Context> context = pJSRuntime->GetCurrentContext();
740         return pValue->ToNumber(context).ToLocalChecked()->Value();
741 }
742
743 v8::Local<v8::Object> JS_ToObject(IJS_Runtime* pJSRuntime, v8::Local<v8::Value> pValue)
744 {
745         if(pValue.IsEmpty()) return v8::Local<v8::Object>();
746         v8::Local<v8::Context> context = pJSRuntime->GetCurrentContext();
747         return pValue->ToObject(context).ToLocalChecked();
748 }
749
750 CFX_WideString  JS_ToString(IJS_Runtime* pJSRuntime, v8::Local<v8::Value> pValue)
751 {
752         if(pValue.IsEmpty()) return L"";
753         v8::Local<v8::Context> context = pJSRuntime->GetCurrentContext();
754         v8::String::Utf8Value s(pValue->ToString(context).ToLocalChecked());
755         return CFX_WideString::FromUTF8(*s, s.length());
756 }
757
758 v8::Local<v8::Array> JS_ToArray(IJS_Runtime* pJSRuntime, v8::Local<v8::Value> pValue)
759 {
760         if(pValue.IsEmpty()) return v8::Local<v8::Array>();
761         v8::Local<v8::Context> context = pJSRuntime->GetCurrentContext();
762         return v8::Local<v8::Array>::Cast(pValue->ToObject(context).ToLocalChecked());
763 }
764
765 void JS_ValueCopy(v8::Local<v8::Value>& pTo, v8::Local<v8::Value> pFrom)
766 {
767         pTo = pFrom;
768 }
769
770
771 //JavaScript time implement begin.
772
773 double _getLocalTZA()
774 {
775         if(!FSDK_IsSandBoxPolicyEnabled(FPDF_POLICY_MACHINETIME_ACCESS))
776                 return 0;
777         time_t t = 0;
778         time(&t);
779         localtime(&t);
780 #if _MSC_VER >= 1900
781   // In gcc and in Visual Studio prior to VS 2015 'timezone' is a global
782   // variable declared in time.h. That variable was deprecated and in VS 2015
783   // is removed, with _get_timezone replacing it.
784   long timezone = 0;
785   _get_timezone(&timezone);
786 #endif
787         return (double)(-(timezone * 1000));
788 }
789
790 int _getDaylightSavingTA(double d)
791 {
792         if(!FSDK_IsSandBoxPolicyEnabled(FPDF_POLICY_MACHINETIME_ACCESS))
793                 return 0;
794         time_t t = (time_t)(d/1000);
795         struct tm * tmp = localtime(&t);
796         if (tmp == NULL)
797                 return 0;
798         if (tmp->tm_isdst > 0)
799                 //One hour.
800                 return (int)60*60*1000;
801         return 0;
802 }
803
804 double _Mod(double x, double y)
805 {   
806         double r = fmod(x, y);
807         if (r < 0) r += y;
808         return r;
809 }
810
811 int _isfinite(double v)
812 {
813 #if _MSC_VER
814         return ::_finite(v);
815 #else
816         return std::fabs(v) < std::numeric_limits<double>::max();
817 #endif
818 }
819
820 double _toInteger(double n)
821 {
822         return (n >= 0)? FXSYS_floor(n): -FXSYS_floor(-n);
823 }
824
825 bool _isLeapYear(int year)
826 {
827         return (year%4==0)&&((year%100!=0)||(year%400!=0));
828 }
829
830 int _DayFromYear(int y)
831 {
832         return (int)(365*(y - 1970.0) + FXSYS_floor((y - 1969.0)/4) - FXSYS_floor((y - 1901.0)/100)+FXSYS_floor((y - 1601.0)/400));
833 }
834
835 double _TimeFromYear(int y)
836 {
837         return  ((double)86400000) * _DayFromYear(y);
838 }
839
840 double _TimeFromYearMonth(int y, int m)
841 {
842         static int daysMonth[12] ={ 0,31,59,90,120,151,181,212,243,273,304,334};
843         static int leapDaysMonth[12] = { 0,31,60,91,121,152,182,213,244,274,305,335};
844         int* pMonth = daysMonth;
845         if(_isLeapYear(y))
846                 pMonth = leapDaysMonth;
847         return _TimeFromYear(y) + ((double)pMonth[m])*86400000;
848 }
849
850 int _Day(double t)
851 {
852         return (int)FXSYS_floor(t / 86400000);
853 }
854
855 int _YearFromTime(double t)
856 {
857         //estimate the time.
858         int y = 1970 +(int)(t/(365.0*86400000));
859         if (_TimeFromYear(y) <= t)
860         {
861                 while(_TimeFromYear(y+1) <= t) y++;
862         }
863         else
864                 while(_TimeFromYear(y-1) > t) y--;
865         return y;
866 }
867
868 int _DayWithinYear(double t)
869 {
870         int year = _YearFromTime(t);
871         int day = _Day(t);
872         return day-_DayFromYear(year);
873 }
874
875 int _MonthFromTime(double t)
876 {
877         int day = _DayWithinYear(t);
878         int year = _YearFromTime(t);
879         if(0<=day && day <31)
880                 return 0;
881         if(31<=day && day< 59+_isLeapYear(year))
882                 return 1;
883         if((59+_isLeapYear(year))<=day && day<(90+_isLeapYear(year)))
884                 return 2;
885         if((90+_isLeapYear(year))<=day && day<(120+_isLeapYear(year)))
886                 return 3;
887         if((120+_isLeapYear(year))<=day && day<(151+_isLeapYear(year)))
888                 return 4;
889         if((151+_isLeapYear(year))<=day && day<(181+_isLeapYear(year)))
890                 return 5;
891         if((181+_isLeapYear(year))<=day && day<(212+_isLeapYear(year)))
892                 return 6;
893         if((212+_isLeapYear(year))<=day && day<(243+_isLeapYear(year)))
894                 return 7;
895         if((243+_isLeapYear(year))<=day && day<(273+_isLeapYear(year)))
896                 return 8;
897         if((273+_isLeapYear(year))<=day && day<(304+_isLeapYear(year)))
898                 return 9;
899         if((304+_isLeapYear(year))<=day && day<(334+_isLeapYear(year)))
900                 return 10;
901         if((334+_isLeapYear(year))<=day && day<(365+_isLeapYear(year)))
902                 return 11;
903
904         return -1;
905 }
906
907 int _DateFromTime(double t)
908 {
909         int day = _DayWithinYear(t);
910         int year = _YearFromTime(t);
911         bool leap = _isLeapYear(year);
912         int month = _MonthFromTime(t);
913         switch (month)
914         {
915         case 0:  
916                 return day+1;
917         case 1:  
918                 return day-30;
919         case 2:  
920                 return day-58-leap;
921         case 3:  
922                 return day-89-leap;
923         case 4:  
924                 return day-119-leap;
925         case 5:  
926                 return day-150-leap;
927         case 6:  
928                 return day-180-leap;
929         case 7:  
930                 return day-211-leap;
931         case 8:  
932                 return day-242-leap;
933         case 9:  
934                 return day-272-leap;
935         case 10: 
936                 return day-303-leap;
937         case 11: 
938                 return day-333-leap;
939         default:
940                 return 0;
941         }
942 }
943
944 double JS_GetDateTime()
945 {
946         if(!FSDK_IsSandBoxPolicyEnabled(FPDF_POLICY_MACHINETIME_ACCESS))
947                 return 0;
948         time_t t = time(NULL);
949         struct tm* pTm = localtime(&t);
950
951         int year = pTm->tm_year+1900;
952         double t1 = _TimeFromYear(year);
953
954         return t1 + pTm->tm_yday*86400000.0 + pTm->tm_hour*3600000.0+pTm->tm_min*60000.0+pTm->tm_sec*1000.0;
955 }
956
957 int JS_GetYearFromTime(double dt)
958 {
959         return _YearFromTime(dt);
960 }
961
962 int JS_GetMonthFromTime(double dt)
963 {
964         return _MonthFromTime(dt);
965 }
966
967 int JS_GetDayFromTime(double dt)
968 {
969         return _DateFromTime(dt);
970 }
971
972 int JS_GetHourFromTime(double dt)
973 {
974         return (int)_Mod(FXSYS_floor((double)(dt/(60*60*1000))), 24);
975 }
976
977 int JS_GetMinFromTime(double dt)
978 {
979         return (int)_Mod(FXSYS_floor((double)(dt/(60*1000))), 60);
980 }
981
982 int JS_GetSecFromTime(double dt)
983 {
984         return (int)_Mod(FXSYS_floor((double)(dt/1000)), 60);
985 }
986
987 double JS_DateParse(const wchar_t* string)
988 {
989         v8::Isolate* pIsolate = v8::Isolate::GetCurrent();
990         v8::Isolate::Scope isolate_scope(pIsolate);
991         v8::HandleScope scope(pIsolate);
992
993         v8::Local<v8::Context> context = pIsolate->GetCurrentContext();
994         
995         //Use the built-in object method.
996         v8::Local<v8::Value> v = context->Global()->Get(context, v8::String::NewFromUtf8(pIsolate, "Date", v8::NewStringType::kNormal).ToLocalChecked()).ToLocalChecked();
997         if(v->IsObject())
998         {
999                 v8::Local<v8::Object> o = v->ToObject(context).ToLocalChecked();
1000                 v = o->Get(context,v8::String::NewFromUtf8(pIsolate, "parse", v8::NewStringType::kNormal).ToLocalChecked()).ToLocalChecked();
1001                 if(v->IsFunction())
1002                 {
1003                         v8::Local<v8::Function> funC = v8::Local<v8::Function>::Cast(v);
1004
1005                         const int argc = 1;
1006                         v8::Local<v8::String> timeStr = WSToJSString(pIsolate, string);
1007                         v8::Local<v8::Value> argv[argc] = {timeStr};
1008                         v = funC->Call(context, context->Global(), argc, argv).ToLocalChecked();
1009                         if(v->IsNumber())
1010                         {
1011                                 double date =  v->ToNumber(context).ToLocalChecked()->Value();
1012                                 if(!_isfinite(date)) return date;
1013                                 return date + _getLocalTZA() + _getDaylightSavingTA(date);
1014                         }
1015
1016                 }
1017         }
1018         return 0;
1019 }
1020
1021 double JS_MakeDay(int nYear, int nMonth, int nDate)
1022 {
1023         if (!_isfinite(nYear) || !_isfinite(nMonth) ||!_isfinite(nDate))
1024                 return GetNan();
1025         double y = _toInteger(nYear);
1026         double m = _toInteger(nMonth);
1027         double dt = _toInteger(nDate);
1028         double ym = y + FXSYS_floor((double)m/12);
1029         double mn = _Mod(m ,12);
1030
1031         double t = _TimeFromYearMonth((int)ym,(int)mn);
1032
1033         if (_YearFromTime(t) != ym || _MonthFromTime(t) != mn ||_DateFromTime(t) != 1)
1034                 return GetNan();
1035         return _Day(t)+dt-1;
1036 }
1037
1038 double JS_MakeTime(int nHour, int nMin, int nSec, int nMs)
1039 {
1040         if (!_isfinite(nHour) ||!_isfinite(nMin) ||!_isfinite(nSec) ||!_isfinite(nMs))
1041                 return GetNan();
1042
1043         double h = _toInteger(nHour);
1044         double m = _toInteger(nMin);
1045         double s = _toInteger(nSec);
1046         double milli = _toInteger(nMs);
1047
1048         return h * 3600000 + m * 60000 + s * 1000 + milli;
1049 }
1050
1051 double JS_MakeDate(double day, double time)
1052 {
1053         if (!_isfinite(day) ||!_isfinite(time))
1054                 return GetNan();
1055
1056         return day * 86400000 + time;
1057 }
1058
1059 bool JS_PortIsNan(double d)
1060 {
1061         return d != d;
1062 }
1063
1064 double JS_LocalTime(double d)
1065 {
1066         return JS_GetDateTime() + _getDaylightSavingTA(d);
1067 }
1068
1069 //JavaScript time implement End.