// 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)); } // 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 = FX_UTF8Encode(CFX_WideStringC(sMethodName)); 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 = FX_UTF8Encode(CFX_WideStringC(sPropName)); 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 = FX_UTF8Encode(CFX_WideStringC(sConstName)); 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 = FX_UTF8Encode(CFX_WideStringC(sMethodName)); 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 = FX_UTF8Encode(CFX_WideStringC(sConstName)); 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 = FX_UTF8Encode(CFX_WideStringC(pObjDef->m_ObjName)); 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(ToWideString(val->Get(context, i).ToLocalChecked())); } return result; } void CFXJS_Engine::PutObjectProperty(v8::Local<v8::Object> pObj, const CFX_WideString& wsPropertyName, v8::Local<v8::Value> pPut) { if (pObj.IsEmpty()) return; pObj->Set(m_isolate->GetCurrentContext(), WSToJSString(wsPropertyName), pPut) .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 CFX_WideString& str) { return WSToJSString(str.c_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::ToDouble(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(); } CFX_WideString CFXJS_Engine::ToWideString(v8::Local<v8::Value> pValue) { if (pValue.IsEmpty()) return CFX_WideString(); 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::Object> CFXJS_Engine::ToObject(v8::Local<v8::Value> pValue) { if (pValue.IsEmpty() || !pValue->IsObject()) return v8::Local<v8::Object>(); v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); return pValue->ToObject(context).ToLocalChecked(); } v8::Local<v8::Array> CFXJS_Engine::ToArray(v8::Local<v8::Value> pValue) { if (pValue.IsEmpty() || !pValue->IsArray()) 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]); }