fpdfsdk/ differences with XFA (for didactic purposes only).

fpdfsdk/src/jsapi/fxjs_v8.cpp

 // 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 "fpdfsdk/include/jsapi/fxjs_v8.h"
 
 #include "core/include/fxcrt/fx_basic.h"
 
@@ skipping 263 matching lines @@
 
 void FXJS_InitializeRuntime(
     v8::Isolate* pIsolate,
     IJS_Runtime* pIRuntime,
     v8::Global<v8::Context>* pV8PersistentContext,
     std::vector<v8::Global<v8::Object>*>* pStaticObjects) {
   if (pIsolate == g_isolate)
     ++g_isolate_ref_count;
 
   v8::Isolate::Scope isolate_scope(pIsolate);
+#ifdef PDF_ENABLE_XFA
+  v8::Locker locker(pIsolate);
+#endif
   v8::HandleScope handle_scope(pIsolate);
   v8::Local<v8::Context> v8Context =
       v8::Context::New(pIsolate, NULL, GetGlobalObjectTemplate(pIsolate));
   v8::Context::Scope context_scope(v8Context);
 
   FXJS_PerIsolateData::SetUp(pIsolate);
   v8Context->SetAlignedPointerInEmbedderData(kPerContextDataIndex, pIRuntime);
 
   int maxID = CFXJS_ObjDefinition::MaxID(pIsolate);
   pStaticObjects->resize(maxID + 1);
@@ skipping 23 matching lines @@
       pStaticObjects->at(i) = new v8::Global<v8::Object>(pIsolate, obj);
     }
   }
   pV8PersistentContext->Reset(pIsolate, v8Context);
 }
 
 void FXJS_ReleaseRuntime(v8::Isolate* pIsolate,
                          v8::Global<v8::Context>* pV8PersistentContext,
                          std::vector<v8::Global<v8::Object>*>* pStaticObjects) {
   v8::Isolate::Scope isolate_scope(pIsolate);
+#ifdef PDF_ENABLE_XFA
+  v8::Locker locker(pIsolate);
+#endif
   v8::HandleScope handle_scope(pIsolate);
   v8::Local<v8::Context> context =
       v8::Local<v8::Context>::New(pIsolate, *pV8PersistentContext);
   v8::Context::Scope context_scope(context);
 
   FXJS_PerIsolateData* pData = FXJS_PerIsolateData::Get(pIsolate);
   if (!pData)
     return;
 
+#ifdef PDF_ENABLE_XFA
+  // XFA, if present, should have already cleaned itself up.
+  FXSYS_assert(!pData->m_pFXJSERuntimeData);
+
+#endif
   int maxID = CFXJS_ObjDefinition::MaxID(pIsolate);
   for (int i = 0; i < maxID; ++i) {
     CFXJS_ObjDefinition* pObjDef = CFXJS_ObjDefinition::ForID(pIsolate, i);
     v8::Local<v8::Object> pObj;
     if (pObjDef->m_ObjType == FXJSOBJTYPE_GLOBAL) {
       pObj =
           context->Global()->GetPrototype()->ToObject(context).ToLocalChecked();
     } else if (pStaticObjects->at(i) && !pStaticObjects->at(i)->IsEmpty()) {
       pObj = v8::Local<v8::Object>::New(pIsolate, *pStaticObjects->at(i));
       delete pStaticObjects->at(i);
@@ skipping 16 matching lines @@
   pIsolate->SetData(g_embedderDataSlot, nullptr);
   delete pData;
 }
 
 IJS_Runtime* FXJS_GetRuntimeFromIsolate(v8::Isolate* pIsolate) {
   v8::Local<v8::Context> context = pIsolate->GetCurrentContext();
   return static_cast<IJS_Runtime*>(
       context->GetAlignedPointerFromEmbedderData(kPerContextDataIndex));
 }
 
+#ifdef PDF_ENABLE_XFA
+void FXJS_SetRuntimeForV8Context(v8::Local<v8::Context> v8Context,
+                                 IJS_Runtime* pIRuntime) {
+  v8Context->SetAlignedPointerInEmbedderData(kPerContextDataIndex, pIRuntime);
+}
+
+#endif
 int FXJS_Execute(v8::Isolate* pIsolate,
                  IJS_Context* pJSContext,
                  const wchar_t* script,
                  FXJSErr* pError) {
   v8::Isolate::Scope isolate_scope(pIsolate);
   v8::TryCatch try_catch(pIsolate);
   CFX_ByteString bsScript = CFX_WideString(script).UTF8Encode();
   v8::Local<v8::Context> context = pIsolate->GetCurrentContext();
   v8::Local<v8::Script> compiled_script;
   if (!v8::Script::Compile(
@@ skipping 369 matching lines @@
     return v8::Local<v8::Array>();
   v8::Local<v8::Context> context = pIsolate->GetCurrentContext();
   return v8::Local<v8::Array>::Cast(pValue->ToObject(context).ToLocalChecked());
 }
 
 void FXJS_ValueCopy(v8::Local<v8::Value>& pTo, v8::Local<v8::Value> pFrom) {
   pTo = pFrom;
 }