| // 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 "fxjs/fxjs_v8.h" |
| |
| #include <vector> |
| |
| #include "core/fxcrt/fx_basic.h" |
| |
| // Keep this consistent with the values defined in gin/public/context_holder.h |
| // (without actually requiring a dependency on gin itself for the standalone |
| // embedders of PDFIum). The value we want to use is: |
| // kPerContextDataStartIndex + kEmbedderPDFium, which is 3. |
| static const unsigned int kPerContextDataIndex = 3u; |
| static unsigned int g_embedderDataSlot = 1u; |
| static v8::Isolate* g_isolate = nullptr; |
| static size_t g_isolate_ref_count = 0; |
| static FXJS_ArrayBufferAllocator* g_arrayBufferAllocator = nullptr; |
| static v8::Global<v8::ObjectTemplate>* g_DefaultGlobalObjectTemplate = nullptr; |
| |
| class CFXJS_PerObjectData { |
| public: |
| explicit CFXJS_PerObjectData(int nObjDefID) |
| : m_ObjDefID(nObjDefID), m_pPrivate(nullptr) {} |
| |
| const int m_ObjDefID; |
| void* m_pPrivate; |
| }; |
| |
| class CFXJS_ObjDefinition { |
| public: |
| static int MaxID(v8::Isolate* pIsolate) { |
| return FXJS_PerIsolateData::Get(pIsolate)->m_ObjectDefnArray.size(); |
| } |
| |
| static CFXJS_ObjDefinition* ForID(v8::Isolate* pIsolate, int id) { |
| // Note: GetAt() halts if out-of-range even in release builds. |
| return FXJS_PerIsolateData::Get(pIsolate)->m_ObjectDefnArray[id].get(); |
| } |
| |
| CFXJS_ObjDefinition(v8::Isolate* isolate, |
| const wchar_t* sObjName, |
| FXJSOBJTYPE eObjType, |
| CFXJS_Engine::Constructor pConstructor, |
| CFXJS_Engine::Destructor pDestructor) |
| : m_ObjName(sObjName), |
| m_ObjType(eObjType), |
| m_pConstructor(pConstructor), |
| m_pDestructor(pDestructor), |
| m_pIsolate(isolate) { |
| v8::Isolate::Scope isolate_scope(isolate); |
| v8::HandleScope handle_scope(isolate); |
| |
| v8::Local<v8::FunctionTemplate> fun = v8::FunctionTemplate::New(isolate); |
| fun->InstanceTemplate()->SetInternalFieldCount(2); |
| if (eObjType == FXJSOBJTYPE_GLOBAL) { |
| fun->InstanceTemplate()->Set( |
| v8::Symbol::GetToStringTag(isolate), |
| v8::String::NewFromUtf8(isolate, "global", v8::NewStringType::kNormal) |
| .ToLocalChecked()); |
| } |
| m_FunctionTemplate.Reset(isolate, fun); |
| |
| v8::Local<v8::Signature> sig = v8::Signature::New(isolate, fun); |
| m_Signature.Reset(isolate, sig); |
| } |
| |
| int AssignID() { |
| FXJS_PerIsolateData* pData = FXJS_PerIsolateData::Get(m_pIsolate); |
| pData->m_ObjectDefnArray.emplace_back(this); |
| return pData->m_ObjectDefnArray.size() - 1; |
| } |
| |
| v8::Local<v8::ObjectTemplate> GetInstanceTemplate() { |
| v8::EscapableHandleScope scope(m_pIsolate); |
| v8::Local<v8::FunctionTemplate> function = |
| m_FunctionTemplate.Get(m_pIsolate); |
| return scope.Escape(function->InstanceTemplate()); |
| } |
| |
| v8::Local<v8::Signature> GetSignature() { |
| v8::EscapableHandleScope scope(m_pIsolate); |
| return scope.Escape(m_Signature.Get(m_pIsolate)); |
| } |
| |
| const wchar_t* const m_ObjName; |
| const FXJSOBJTYPE m_ObjType; |
| const CFXJS_Engine::Constructor m_pConstructor; |
| const CFXJS_Engine::Destructor m_pDestructor; |
| |
| v8::Isolate* m_pIsolate; |
| v8::Global<v8::FunctionTemplate> m_FunctionTemplate; |
| v8::Global<v8::Signature> m_Signature; |
| }; |
| |
| static v8::Local<v8::ObjectTemplate> GetGlobalObjectTemplate( |
| v8::Isolate* pIsolate) { |
| int maxID = CFXJS_ObjDefinition::MaxID(pIsolate); |
| for (int i = 0; i < maxID; ++i) { |
| CFXJS_ObjDefinition* pObjDef = CFXJS_ObjDefinition::ForID(pIsolate, i); |
| if (pObjDef->m_ObjType == FXJSOBJTYPE_GLOBAL) |
| return pObjDef->GetInstanceTemplate(); |
| } |
| if (!g_DefaultGlobalObjectTemplate) { |
| v8::Local<v8::ObjectTemplate> hGlobalTemplate = |
| v8::ObjectTemplate::New(pIsolate); |
| hGlobalTemplate->Set( |
| v8::Symbol::GetToStringTag(pIsolate), |
| v8::String::NewFromUtf8(pIsolate, "global", v8::NewStringType::kNormal) |
| .ToLocalChecked()); |
| g_DefaultGlobalObjectTemplate = |
| new v8::Global<v8::ObjectTemplate>(pIsolate, hGlobalTemplate); |
| } |
| return g_DefaultGlobalObjectTemplate->Get(pIsolate); |
| } |
| |
| void* FXJS_ArrayBufferAllocator::Allocate(size_t length) { |
| return calloc(1, length); |
| } |
| |
| void* FXJS_ArrayBufferAllocator::AllocateUninitialized(size_t length) { |
| return malloc(length); |
| } |
| |
| void FXJS_ArrayBufferAllocator::Free(void* data, size_t length) { |
| free(data); |
| } |
| |
| void V8TemplateMapTraits::Dispose(v8::Isolate* isolate, |
| v8::Global<v8::Object> value, |
| void* key) { |
| v8::Local<v8::Object> obj = value.Get(isolate); |
| if (obj.IsEmpty()) |
| return; |
| CFXJS_Engine* pEngine = CFXJS_Engine::CurrentEngineFromIsolate(isolate); |
| int id = pEngine->GetObjDefnID(obj); |
| if (id == -1) |
| return; |
| CFXJS_ObjDefinition* pObjDef = CFXJS_ObjDefinition::ForID(isolate, id); |
| if (!pObjDef) |
| return; |
| if (pObjDef->m_pDestructor) |
| pObjDef->m_pDestructor(pEngine, obj); |
| CFXJS_Engine::FreeObjectPrivate(obj); |
| } |
| |
| V8TemplateMapTraits::MapType* V8TemplateMapTraits::MapFromWeakCallbackInfo( |
| const v8::WeakCallbackInfo<WeakCallbackDataType>& data) { |
| V8TemplateMap* pMap = |
| (FXJS_PerIsolateData::Get(data.GetIsolate()))->m_pDynamicObjsMap.get(); |
| return pMap ? &pMap->m_map : nullptr; |
| } |
| |
| void FXJS_Initialize(unsigned int embedderDataSlot, v8::Isolate* pIsolate) { |
| if (g_isolate) { |
| ASSERT(g_embedderDataSlot == embedderDataSlot); |
| ASSERT(g_isolate == pIsolate); |
| return; |
| } |
| g_embedderDataSlot = embedderDataSlot; |
| g_isolate = pIsolate; |
| } |
| |
| void FXJS_Release() { |
| ASSERT(!g_isolate || g_isolate_ref_count == 0); |
| delete g_DefaultGlobalObjectTemplate; |
| g_DefaultGlobalObjectTemplate = nullptr; |
| g_isolate = nullptr; |
| |
| delete g_arrayBufferAllocator; |
| g_arrayBufferAllocator = nullptr; |
| } |
| |
| bool FXJS_GetIsolate(v8::Isolate** pResultIsolate) { |
| if (g_isolate) { |
| *pResultIsolate = g_isolate; |
| return false; |
| } |
| // Provide backwards compatibility when no external isolate. |
| if (!g_arrayBufferAllocator) |
| g_arrayBufferAllocator = new FXJS_ArrayBufferAllocator(); |
| v8::Isolate::CreateParams params; |
| params.array_buffer_allocator = g_arrayBufferAllocator; |
| *pResultIsolate = v8::Isolate::New(params); |
| return true; |
| } |
| |
| size_t FXJS_GlobalIsolateRefCount() { |
| return g_isolate_ref_count; |
| } |
| |
| V8TemplateMap::V8TemplateMap(v8::Isolate* isolate) : m_map(isolate) {} |
| |
| V8TemplateMap::~V8TemplateMap() {} |
| |
| void V8TemplateMap::set(void* key, v8::Local<v8::Object> handle) { |
| ASSERT(!m_map.Contains(key)); |
| m_map.Set(key, handle); |
| } |
| |
| FXJS_PerIsolateData::~FXJS_PerIsolateData() {} |
| |
| // static |
| void FXJS_PerIsolateData::SetUp(v8::Isolate* pIsolate) { |
| if (!pIsolate->GetData(g_embedderDataSlot)) |
| pIsolate->SetData(g_embedderDataSlot, new FXJS_PerIsolateData(pIsolate)); |
| } |
| |
| // static |
| FXJS_PerIsolateData* FXJS_PerIsolateData::Get(v8::Isolate* pIsolate) { |
| return static_cast<FXJS_PerIsolateData*>( |
| pIsolate->GetData(g_embedderDataSlot)); |
| } |
| |
| FXJS_PerIsolateData::FXJS_PerIsolateData(v8::Isolate* pIsolate) |
| : m_pDynamicObjsMap(new V8TemplateMap(pIsolate)) {} |
| |
| CFXJS_Engine::CFXJS_Engine() : m_isolate(nullptr) {} |
| |
| CFXJS_Engine::CFXJS_Engine(v8::Isolate* pIsolate) : m_isolate(pIsolate) {} |
| |
| CFXJS_Engine::~CFXJS_Engine() { |
| m_V8PersistentContext.Reset(); |
| } |
| |
| // static |
| CFXJS_Engine* CFXJS_Engine::CurrentEngineFromIsolate(v8::Isolate* pIsolate) { |
| return static_cast<CFXJS_Engine*>( |
| pIsolate->GetCurrentContext()->GetAlignedPointerFromEmbedderData( |
| kPerContextDataIndex)); |
| } |
| |
| #ifdef PDF_ENABLE_XFA |
| // static |
| void CFXJS_Engine::SetForV8Context(v8::Local<v8::Context> v8Context, |
| CFXJS_Engine* pEngine) { |
| v8Context->SetAlignedPointerInEmbedderData(kPerContextDataIndex, pEngine); |
| } |
| #endif // PDF_ENABLE_XFA |
| |
| // static |
| int CFXJS_Engine::GetObjDefnID(v8::Local<v8::Object> pObj) { |
| if (pObj.IsEmpty() || !pObj->InternalFieldCount()) |
| return -1; |
| CFXJS_PerObjectData* pPerObjectData = static_cast<CFXJS_PerObjectData*>( |
| pObj->GetAlignedPointerFromInternalField(0)); |
| if (!pPerObjectData) |
| return -1; |
| return pPerObjectData->m_ObjDefID; |
| } |
| |
| // static |
| void CFXJS_Engine::FreeObjectPrivate(void* pPerObjectData) { |
| delete static_cast<CFXJS_PerObjectData*>(pPerObjectData); |
| } |
| |
| // static |
| void CFXJS_Engine::FreeObjectPrivate(v8::Local<v8::Object> pObj) { |
| if (pObj.IsEmpty() || !pObj->InternalFieldCount()) |
| return; |
| FreeObjectPrivate(pObj->GetAlignedPointerFromInternalField(0)); |
| pObj->SetAlignedPointerInInternalField(0, nullptr); |
| } |
| |
| int CFXJS_Engine::DefineObj(const wchar_t* sObjName, |
| FXJSOBJTYPE eObjType, |
| CFXJS_Engine::Constructor pConstructor, |
| CFXJS_Engine::Destructor pDestructor) { |
| v8::Isolate::Scope isolate_scope(m_isolate); |
| v8::HandleScope handle_scope(m_isolate); |
| FXJS_PerIsolateData::SetUp(m_isolate); |
| CFXJS_ObjDefinition* pObjDef = new CFXJS_ObjDefinition( |
| m_isolate, sObjName, eObjType, pConstructor, pDestructor); |
| return pObjDef->AssignID(); |
| } |
| |
| void CFXJS_Engine::DefineObjMethod(int nObjDefnID, |
| const wchar_t* sMethodName, |
| v8::FunctionCallback pMethodCall) { |
| v8::Isolate::Scope isolate_scope(m_isolate); |
| v8::HandleScope handle_scope(m_isolate); |
| CFX_ByteString bsMethodName = CFX_WideString(sMethodName).UTF8Encode(); |
| CFXJS_ObjDefinition* pObjDef = |
| CFXJS_ObjDefinition::ForID(m_isolate, nObjDefnID); |
| v8::Local<v8::FunctionTemplate> fun = v8::FunctionTemplate::New( |
| m_isolate, pMethodCall, v8::Local<v8::Value>(), pObjDef->GetSignature()); |
| fun->RemovePrototype(); |
| pObjDef->GetInstanceTemplate()->Set( |
| v8::String::NewFromUtf8(m_isolate, bsMethodName.c_str(), |
| v8::NewStringType::kNormal) |
| .ToLocalChecked(), |
| fun, v8::ReadOnly); |
| } |
| |
| void CFXJS_Engine::DefineObjProperty(int nObjDefnID, |
| const wchar_t* sPropName, |
| v8::AccessorGetterCallback pPropGet, |
| v8::AccessorSetterCallback pPropPut) { |
| v8::Isolate::Scope isolate_scope(m_isolate); |
| v8::HandleScope handle_scope(m_isolate); |
| CFX_ByteString bsPropertyName = CFX_WideString(sPropName).UTF8Encode(); |
| CFXJS_ObjDefinition* pObjDef = |
| CFXJS_ObjDefinition::ForID(m_isolate, nObjDefnID); |
| pObjDef->GetInstanceTemplate()->SetAccessor( |
| v8::String::NewFromUtf8(m_isolate, bsPropertyName.c_str(), |
| v8::NewStringType::kNormal) |
| .ToLocalChecked(), |
| pPropGet, pPropPut); |
| } |
| |
| void CFXJS_Engine::DefineObjAllProperties( |
| int nObjDefnID, |
| v8::NamedPropertyQueryCallback pPropQurey, |
| v8::NamedPropertyGetterCallback pPropGet, |
| v8::NamedPropertySetterCallback pPropPut, |
| v8::NamedPropertyDeleterCallback pPropDel) { |
| v8::Isolate::Scope isolate_scope(m_isolate); |
| v8::HandleScope handle_scope(m_isolate); |
| CFXJS_ObjDefinition* pObjDef = |
| CFXJS_ObjDefinition::ForID(m_isolate, nObjDefnID); |
| pObjDef->GetInstanceTemplate()->SetNamedPropertyHandler(pPropGet, pPropPut, |
| pPropQurey, pPropDel); |
| } |
| |
| void CFXJS_Engine::DefineObjConst(int nObjDefnID, |
| const wchar_t* sConstName, |
| v8::Local<v8::Value> pDefault) { |
| v8::Isolate::Scope isolate_scope(m_isolate); |
| v8::HandleScope handle_scope(m_isolate); |
| CFX_ByteString bsConstName = CFX_WideString(sConstName).UTF8Encode(); |
| CFXJS_ObjDefinition* pObjDef = |
| CFXJS_ObjDefinition::ForID(m_isolate, nObjDefnID); |
| pObjDef->GetInstanceTemplate()->Set(m_isolate, bsConstName.c_str(), pDefault); |
| } |
| |
| void CFXJS_Engine::DefineGlobalMethod(const wchar_t* sMethodName, |
| v8::FunctionCallback pMethodCall) { |
| v8::Isolate::Scope isolate_scope(m_isolate); |
| v8::HandleScope handle_scope(m_isolate); |
| CFX_ByteString bsMethodName = CFX_WideString(sMethodName).UTF8Encode(); |
| v8::Local<v8::FunctionTemplate> fun = |
| v8::FunctionTemplate::New(m_isolate, pMethodCall); |
| fun->RemovePrototype(); |
| GetGlobalObjectTemplate(m_isolate)->Set( |
| v8::String::NewFromUtf8(m_isolate, bsMethodName.c_str(), |
| v8::NewStringType::kNormal) |
| .ToLocalChecked(), |
| fun, v8::ReadOnly); |
| } |
| |
| void CFXJS_Engine::DefineGlobalConst(const wchar_t* sConstName, |
| v8::FunctionCallback pConstGetter) { |
| v8::Isolate::Scope isolate_scope(m_isolate); |
| v8::HandleScope handle_scope(m_isolate); |
| CFX_ByteString bsConst = CFX_WideString(sConstName).UTF8Encode(); |
| v8::Local<v8::FunctionTemplate> fun = |
| v8::FunctionTemplate::New(m_isolate, pConstGetter); |
| fun->RemovePrototype(); |
| GetGlobalObjectTemplate(m_isolate)->SetAccessorProperty( |
| v8::String::NewFromUtf8(m_isolate, bsConst.c_str(), |
| v8::NewStringType::kNormal) |
| .ToLocalChecked(), |
| fun); |
| } |
| |
| void CFXJS_Engine::InitializeEngine() { |
| if (m_isolate == g_isolate) |
| ++g_isolate_ref_count; |
| |
| v8::Isolate::Scope isolate_scope(m_isolate); |
| v8::HandleScope handle_scope(m_isolate); |
| |
| // This has to happen before we call GetGlobalObjectTemplate because that |
| // method gets the PerIsolateData from m_isolate. |
| FXJS_PerIsolateData::SetUp(m_isolate); |
| |
| v8::Local<v8::Context> v8Context = |
| v8::Context::New(m_isolate, nullptr, GetGlobalObjectTemplate(m_isolate)); |
| v8::Context::Scope context_scope(v8Context); |
| |
| v8Context->SetAlignedPointerInEmbedderData(kPerContextDataIndex, this); |
| |
| int maxID = CFXJS_ObjDefinition::MaxID(m_isolate); |
| m_StaticObjects.resize(maxID + 1); |
| for (int i = 0; i < maxID; ++i) { |
| CFXJS_ObjDefinition* pObjDef = CFXJS_ObjDefinition::ForID(m_isolate, i); |
| if (pObjDef->m_ObjType == FXJSOBJTYPE_GLOBAL) { |
| v8Context->Global() |
| ->GetPrototype() |
| ->ToObject(v8Context) |
| .ToLocalChecked() |
| ->SetAlignedPointerInInternalField(0, new CFXJS_PerObjectData(i)); |
| |
| if (pObjDef->m_pConstructor) |
| pObjDef->m_pConstructor(this, v8Context->Global() |
| ->GetPrototype() |
| ->ToObject(v8Context) |
| .ToLocalChecked()); |
| } else if (pObjDef->m_ObjType == FXJSOBJTYPE_STATIC) { |
| CFX_ByteString bs = CFX_WideString(pObjDef->m_ObjName).UTF8Encode(); |
| v8::Local<v8::String> m_ObjName = |
| v8::String::NewFromUtf8(m_isolate, bs.c_str(), |
| v8::NewStringType::kNormal, bs.GetLength()) |
| .ToLocalChecked(); |
| |
| v8::Local<v8::Object> obj = NewFxDynamicObj(i, true); |
| v8Context->Global()->Set(v8Context, m_ObjName, obj).FromJust(); |
| m_StaticObjects[i] = new v8::Global<v8::Object>(m_isolate, obj); |
| } |
| } |
| m_V8PersistentContext.Reset(m_isolate, v8Context); |
| } |
| |
| void CFXJS_Engine::ReleaseEngine() { |
| v8::Isolate::Scope isolate_scope(m_isolate); |
| v8::HandleScope handle_scope(m_isolate); |
| v8::Local<v8::Context> context = |
| v8::Local<v8::Context>::New(m_isolate, m_V8PersistentContext); |
| v8::Context::Scope context_scope(context); |
| |
| FXJS_PerIsolateData* pData = FXJS_PerIsolateData::Get(m_isolate); |
| if (!pData) |
| return; |
| |
| m_ConstArrays.clear(); |
| |
| int maxID = CFXJS_ObjDefinition::MaxID(m_isolate); |
| for (int i = 0; i < maxID; ++i) { |
| CFXJS_ObjDefinition* pObjDef = CFXJS_ObjDefinition::ForID(m_isolate, i); |
| v8::Local<v8::Object> pObj; |
| if (pObjDef->m_ObjType == FXJSOBJTYPE_GLOBAL) { |
| pObj = |
| context->Global()->GetPrototype()->ToObject(context).ToLocalChecked(); |
| } else if (m_StaticObjects[i] && !m_StaticObjects[i]->IsEmpty()) { |
| pObj = v8::Local<v8::Object>::New(m_isolate, *m_StaticObjects[i]); |
| delete m_StaticObjects[i]; |
| m_StaticObjects[i] = nullptr; |
| } |
| |
| if (!pObj.IsEmpty()) { |
| if (pObjDef->m_pDestructor) |
| pObjDef->m_pDestructor(this, pObj); |
| FreeObjectPrivate(pObj); |
| } |
| } |
| |
| m_V8PersistentContext.Reset(); |
| |
| if (m_isolate == g_isolate && --g_isolate_ref_count > 0) |
| return; |
| |
| delete pData; |
| m_isolate->SetData(g_embedderDataSlot, nullptr); |
| } |
| |
| int CFXJS_Engine::Execute(const CFX_WideString& script, FXJSErr* pError) { |
| v8::Isolate::Scope isolate_scope(m_isolate); |
| v8::TryCatch try_catch(m_isolate); |
| CFX_ByteString bsScript = script.UTF8Encode(); |
| v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); |
| v8::Local<v8::Script> compiled_script; |
| if (!v8::Script::Compile(context, |
| v8::String::NewFromUtf8(m_isolate, bsScript.c_str(), |
| v8::NewStringType::kNormal, |
| bsScript.GetLength()) |
| .ToLocalChecked()) |
| .ToLocal(&compiled_script)) { |
| v8::String::Utf8Value error(try_catch.Exception()); |
| // TODO(tsepez): return error via pError->message. |
| return -1; |
| } |
| |
| v8::Local<v8::Value> result; |
| if (!compiled_script->Run(context).ToLocal(&result)) { |
| v8::String::Utf8Value error(try_catch.Exception()); |
| // TODO(tsepez): return error via pError->message. |
| return -1; |
| } |
| return 0; |
| } |
| |
| v8::Local<v8::Object> CFXJS_Engine::NewFxDynamicObj(int nObjDefnID, |
| bool bStatic) { |
| v8::Isolate::Scope isolate_scope(m_isolate); |
| v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); |
| if (nObjDefnID == -1) { |
| v8::Local<v8::ObjectTemplate> objTempl = v8::ObjectTemplate::New(m_isolate); |
| v8::Local<v8::Object> obj; |
| if (!objTempl->NewInstance(context).ToLocal(&obj)) |
| return v8::Local<v8::Object>(); |
| return obj; |
| } |
| |
| FXJS_PerIsolateData* pData = FXJS_PerIsolateData::Get(m_isolate); |
| if (!pData) |
| return v8::Local<v8::Object>(); |
| |
| if (nObjDefnID < 0 || nObjDefnID >= CFXJS_ObjDefinition::MaxID(m_isolate)) |
| return v8::Local<v8::Object>(); |
| |
| CFXJS_ObjDefinition* pObjDef = |
| CFXJS_ObjDefinition::ForID(m_isolate, nObjDefnID); |
| v8::Local<v8::Object> obj; |
| if (!pObjDef->GetInstanceTemplate()->NewInstance(context).ToLocal(&obj)) |
| return v8::Local<v8::Object>(); |
| |
| CFXJS_PerObjectData* pPerObjData = new CFXJS_PerObjectData(nObjDefnID); |
| obj->SetAlignedPointerInInternalField(0, pPerObjData); |
| if (pObjDef->m_pConstructor) |
| pObjDef->m_pConstructor(this, obj); |
| |
| if (!bStatic && FXJS_PerIsolateData::Get(m_isolate)->m_pDynamicObjsMap) { |
| FXJS_PerIsolateData::Get(m_isolate)->m_pDynamicObjsMap->set(pPerObjData, |
| obj); |
| } |
| return obj; |
| } |
| |
| v8::Local<v8::Object> CFXJS_Engine::GetThisObj() { |
| v8::Isolate::Scope isolate_scope(m_isolate); |
| if (!FXJS_PerIsolateData::Get(m_isolate)) |
| return v8::Local<v8::Object>(); |
| |
| // Return the global object. |
| v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); |
| return context->Global()->GetPrototype()->ToObject(context).ToLocalChecked(); |
| } |
| |
| void CFXJS_Engine::Error(const CFX_WideString& message) { |
| // Conversion from pdfium's wchar_t wide-strings to v8's uint16_t |
| // wide-strings isn't handled by v8, so use UTF8 as a common |
| // intermediate format. |
| CFX_ByteString utf8_message = message.UTF8Encode(); |
| m_isolate->ThrowException(v8::String::NewFromUtf8(m_isolate, |
| utf8_message.c_str(), |
| v8::NewStringType::kNormal) |
| .ToLocalChecked()); |
| } |
| |
| void CFXJS_Engine::SetObjectPrivate(v8::Local<v8::Object> pObj, void* p) { |
| if (pObj.IsEmpty() || !pObj->InternalFieldCount()) |
| return; |
| CFXJS_PerObjectData* pPerObjectData = static_cast<CFXJS_PerObjectData*>( |
| pObj->GetAlignedPointerFromInternalField(0)); |
| if (!pPerObjectData) |
| return; |
| pPerObjectData->m_pPrivate = p; |
| } |
| |
| void* CFXJS_Engine::GetObjectPrivate(v8::Local<v8::Object> pObj) { |
| if (pObj.IsEmpty()) |
| return nullptr; |
| CFXJS_PerObjectData* pPerObjectData = nullptr; |
| if (pObj->InternalFieldCount()) { |
| pPerObjectData = static_cast<CFXJS_PerObjectData*>( |
| pObj->GetAlignedPointerFromInternalField(0)); |
| } else { |
| // It could be a global proxy object. |
| v8::Local<v8::Value> v = pObj->GetPrototype(); |
| v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); |
| if (v->IsObject()) { |
| pPerObjectData = static_cast<CFXJS_PerObjectData*>( |
| v->ToObject(context) |
| .ToLocalChecked() |
| ->GetAlignedPointerFromInternalField(0)); |
| } |
| } |
| return pPerObjectData ? pPerObjectData->m_pPrivate : nullptr; |
| } |
| |
| v8::Local<v8::String> CFXJS_Engine::WSToJSString( |
| const CFX_WideString& wsPropertyName) { |
| v8::Isolate* pIsolate = m_isolate ? m_isolate : v8::Isolate::GetCurrent(); |
| CFX_ByteString bs = wsPropertyName.UTF8Encode(); |
| return v8::String::NewFromUtf8(pIsolate, bs.c_str(), |
| v8::NewStringType::kNormal, bs.GetLength()) |
| .ToLocalChecked(); |
| } |
| |
| v8::Local<v8::Value> CFXJS_Engine::GetObjectProperty( |
| v8::Local<v8::Object> pObj, |
| const CFX_WideString& wsPropertyName) { |
| if (pObj.IsEmpty()) |
| return v8::Local<v8::Value>(); |
| v8::Local<v8::Value> val; |
| if (!pObj->Get(m_isolate->GetCurrentContext(), WSToJSString(wsPropertyName)) |
| .ToLocal(&val)) |
| return v8::Local<v8::Value>(); |
| return val; |
| } |
| |
| std::vector<CFX_WideString> CFXJS_Engine::GetObjectPropertyNames( |
| v8::Local<v8::Object> pObj) { |
| if (pObj.IsEmpty()) |
| return std::vector<CFX_WideString>(); |
| |
| v8::Local<v8::Array> val; |
| v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); |
| if (!pObj->GetPropertyNames(context).ToLocal(&val)) |
| return std::vector<CFX_WideString>(); |
| |
| std::vector<CFX_WideString> result; |
| for (uint32_t i = 0; i < val->Length(); ++i) { |
| result.push_back(ToString(val->Get(context, i).ToLocalChecked())); |
| } |
| |
| return result; |
| } |
| |
| void CFXJS_Engine::PutObjectString(v8::Local<v8::Object> pObj, |
| const CFX_WideString& wsPropertyName, |
| const CFX_WideString& wsValue) { |
| if (pObj.IsEmpty()) |
| return; |
| pObj->Set(m_isolate->GetCurrentContext(), WSToJSString(wsPropertyName), |
| WSToJSString(wsValue)) |
| .FromJust(); |
| } |
| |
| void CFXJS_Engine::PutObjectNumber(v8::Local<v8::Object> pObj, |
| const CFX_WideString& wsPropertyName, |
| int nValue) { |
| if (pObj.IsEmpty()) |
| return; |
| pObj->Set(m_isolate->GetCurrentContext(), WSToJSString(wsPropertyName), |
| v8::Int32::New(m_isolate, nValue)) |
| .FromJust(); |
| } |
| |
| void CFXJS_Engine::PutObjectNumber(v8::Local<v8::Object> pObj, |
| const CFX_WideString& wsPropertyName, |
| float fValue) { |
| if (pObj.IsEmpty()) |
| return; |
| pObj->Set(m_isolate->GetCurrentContext(), WSToJSString(wsPropertyName), |
| v8::Number::New(m_isolate, (double)fValue)) |
| .FromJust(); |
| } |
| |
| void CFXJS_Engine::PutObjectNumber(v8::Local<v8::Object> pObj, |
| const CFX_WideString& wsPropertyName, |
| double dValue) { |
| if (pObj.IsEmpty()) |
| return; |
| pObj->Set(m_isolate->GetCurrentContext(), WSToJSString(wsPropertyName), |
| v8::Number::New(m_isolate, (double)dValue)) |
| .FromJust(); |
| } |
| |
| void CFXJS_Engine::PutObjectBoolean(v8::Local<v8::Object> pObj, |
| const CFX_WideString& wsPropertyName, |
| bool bValue) { |
| if (pObj.IsEmpty()) |
| return; |
| pObj->Set(m_isolate->GetCurrentContext(), WSToJSString(wsPropertyName), |
| v8::Boolean::New(m_isolate, bValue)) |
| .FromJust(); |
| } |
| |
| void CFXJS_Engine::PutObjectObject(v8::Local<v8::Object> pObj, |
| const CFX_WideString& wsPropertyName, |
| v8::Local<v8::Object> pPut) { |
| if (pObj.IsEmpty()) |
| return; |
| pObj->Set(m_isolate->GetCurrentContext(), WSToJSString(wsPropertyName), pPut) |
| .FromJust(); |
| } |
| |
| void CFXJS_Engine::PutObjectNull(v8::Local<v8::Object> pObj, |
| const CFX_WideString& wsPropertyName) { |
| if (pObj.IsEmpty()) |
| return; |
| pObj->Set(m_isolate->GetCurrentContext(), WSToJSString(wsPropertyName), |
| v8::Local<v8::Object>()) |
| .FromJust(); |
| } |
| |
| v8::Local<v8::Array> CFXJS_Engine::NewArray() { |
| return v8::Array::New(m_isolate); |
| } |
| |
| unsigned CFXJS_Engine::PutArrayElement(v8::Local<v8::Array> pArray, |
| unsigned index, |
| v8::Local<v8::Value> pValue) { |
| if (pArray.IsEmpty()) |
| return 0; |
| if (pArray->Set(m_isolate->GetCurrentContext(), index, pValue).IsNothing()) |
| return 0; |
| return 1; |
| } |
| |
| v8::Local<v8::Value> CFXJS_Engine::GetArrayElement(v8::Local<v8::Array> pArray, |
| unsigned index) { |
| if (pArray.IsEmpty()) |
| return v8::Local<v8::Value>(); |
| v8::Local<v8::Value> val; |
| if (!pArray->Get(m_isolate->GetCurrentContext(), index).ToLocal(&val)) |
| return v8::Local<v8::Value>(); |
| return val; |
| } |
| |
| unsigned CFXJS_Engine::GetArrayLength(v8::Local<v8::Array> pArray) { |
| if (pArray.IsEmpty()) |
| return 0; |
| return pArray->Length(); |
| } |
| |
| v8::Local<v8::Context> CFXJS_Engine::NewLocalContext() { |
| return v8::Local<v8::Context>::New(m_isolate, m_V8PersistentContext); |
| } |
| |
| v8::Local<v8::Context> CFXJS_Engine::GetPersistentContext() { |
| return m_V8PersistentContext.Get(m_isolate); |
| } |
| |
| v8::Local<v8::Value> CFXJS_Engine::NewNumber(int number) { |
| return v8::Int32::New(m_isolate, number); |
| } |
| |
| v8::Local<v8::Value> CFXJS_Engine::NewNumber(double number) { |
| return v8::Number::New(m_isolate, number); |
| } |
| |
| v8::Local<v8::Value> CFXJS_Engine::NewNumber(float number) { |
| return v8::Number::New(m_isolate, (float)number); |
| } |
| |
| v8::Local<v8::Value> CFXJS_Engine::NewBoolean(bool b) { |
| return v8::Boolean::New(m_isolate, b); |
| } |
| |
| v8::Local<v8::Value> CFXJS_Engine::NewString(const wchar_t* str) { |
| return WSToJSString(str); |
| } |
| |
| v8::Local<v8::Value> CFXJS_Engine::NewNull() { |
| return v8::Local<v8::Value>(); |
| } |
| |
| v8::Local<v8::Date> CFXJS_Engine::NewDate(double d) { |
| return v8::Date::New(m_isolate->GetCurrentContext(), d) |
| .ToLocalChecked() |
| .As<v8::Date>(); |
| } |
| |
| int CFXJS_Engine::ToInt32(v8::Local<v8::Value> pValue) { |
| if (pValue.IsEmpty()) |
| return 0; |
| v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); |
| return pValue->ToInt32(context).ToLocalChecked()->Value(); |
| } |
| |
| bool CFXJS_Engine::ToBoolean(v8::Local<v8::Value> pValue) { |
| if (pValue.IsEmpty()) |
| return false; |
| v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); |
| return pValue->ToBoolean(context).ToLocalChecked()->Value(); |
| } |
| |
| double CFXJS_Engine::ToNumber(v8::Local<v8::Value> pValue) { |
| if (pValue.IsEmpty()) |
| return 0.0; |
| v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); |
| return pValue->ToNumber(context).ToLocalChecked()->Value(); |
| } |
| |
| v8::Local<v8::Object> CFXJS_Engine::ToObject(v8::Local<v8::Value> pValue) { |
| if (pValue.IsEmpty()) |
| return v8::Local<v8::Object>(); |
| v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); |
| return pValue->ToObject(context).ToLocalChecked(); |
| } |
| |
| CFX_WideString CFXJS_Engine::ToString(v8::Local<v8::Value> pValue) { |
| if (pValue.IsEmpty()) |
| return L""; |
| v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); |
| v8::String::Utf8Value s(pValue->ToString(context).ToLocalChecked()); |
| return CFX_WideString::FromUTF8(CFX_ByteStringC(*s, s.length())); |
| } |
| |
| v8::Local<v8::Array> CFXJS_Engine::ToArray(v8::Local<v8::Value> pValue) { |
| if (pValue.IsEmpty()) |
| return v8::Local<v8::Array>(); |
| v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); |
| return v8::Local<v8::Array>::Cast(pValue->ToObject(context).ToLocalChecked()); |
| } |
| |
| void CFXJS_Engine::SetConstArray(const CFX_WideString& name, |
| v8::Local<v8::Array> array) { |
| m_ConstArrays[name] = v8::Global<v8::Array>(GetIsolate(), array); |
| } |
| |
| v8::Local<v8::Array> CFXJS_Engine::GetConstArray(const CFX_WideString& name) { |
| return v8::Local<v8::Array>::New(GetIsolate(), m_ConstArrays[name]); |
| } |
