| // Copyright 2016 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/cfxjse_class.h" |
| |
| #include <memory> |
| |
| #include "fxjs/cfxjse_context.h" |
| #include "fxjs/cfxjse_value.h" |
| |
| namespace { |
| |
| void V8FunctionCallback_Wrapper( |
| const v8::FunctionCallbackInfo<v8::Value>& info) { |
| const FXJSE_FUNCTION_DESCRIPTOR* lpFunctionInfo = |
| static_cast<FXJSE_FUNCTION_DESCRIPTOR*>( |
| info.Data().As<v8::External>()->Value()); |
| if (!lpFunctionInfo) |
| return; |
| |
| CFX_ByteStringC szFunctionName(lpFunctionInfo->name); |
| std::unique_ptr<CFXJSE_Value> lpThisValue( |
| new CFXJSE_Value(info.GetIsolate())); |
| lpThisValue->ForceSetValue(info.This()); |
| std::unique_ptr<CFXJSE_Value> lpRetValue(new CFXJSE_Value(info.GetIsolate())); |
| CFXJSE_Arguments impl(&info, lpRetValue.get()); |
| lpFunctionInfo->callbackProc(lpThisValue.get(), szFunctionName, impl); |
| if (!lpRetValue->DirectGetValue().IsEmpty()) |
| info.GetReturnValue().Set(lpRetValue->DirectGetValue()); |
| } |
| |
| void V8ClassGlobalConstructorCallback_Wrapper( |
| const v8::FunctionCallbackInfo<v8::Value>& info) { |
| const FXJSE_CLASS_DESCRIPTOR* lpClassDefinition = |
| static_cast<FXJSE_CLASS_DESCRIPTOR*>( |
| info.Data().As<v8::External>()->Value()); |
| if (!lpClassDefinition) |
| return; |
| |
| CFX_ByteStringC szFunctionName(lpClassDefinition->name); |
| std::unique_ptr<CFXJSE_Value> lpThisValue( |
| new CFXJSE_Value(info.GetIsolate())); |
| lpThisValue->ForceSetValue(info.This()); |
| std::unique_ptr<CFXJSE_Value> lpRetValue(new CFXJSE_Value(info.GetIsolate())); |
| CFXJSE_Arguments impl(&info, lpRetValue.get()); |
| lpClassDefinition->constructor(lpThisValue.get(), szFunctionName, impl); |
| if (!lpRetValue->DirectGetValue().IsEmpty()) |
| info.GetReturnValue().Set(lpRetValue->DirectGetValue()); |
| } |
| |
| void V8GetterCallback_Wrapper(v8::Local<v8::String> property, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| const FXJSE_PROPERTY_DESCRIPTOR* lpPropertyInfo = |
| static_cast<FXJSE_PROPERTY_DESCRIPTOR*>( |
| info.Data().As<v8::External>()->Value()); |
| if (!lpPropertyInfo) |
| return; |
| |
| CFX_ByteStringC szPropertyName(lpPropertyInfo->name); |
| std::unique_ptr<CFXJSE_Value> lpThisValue( |
| new CFXJSE_Value(info.GetIsolate())); |
| std::unique_ptr<CFXJSE_Value> lpPropValue( |
| new CFXJSE_Value(info.GetIsolate())); |
| lpThisValue->ForceSetValue(info.This()); |
| lpPropertyInfo->getProc(lpThisValue.get(), szPropertyName, lpPropValue.get()); |
| info.GetReturnValue().Set(lpPropValue->DirectGetValue()); |
| } |
| |
| void V8SetterCallback_Wrapper(v8::Local<v8::String> property, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<void>& info) { |
| const FXJSE_PROPERTY_DESCRIPTOR* lpPropertyInfo = |
| static_cast<FXJSE_PROPERTY_DESCRIPTOR*>( |
| info.Data().As<v8::External>()->Value()); |
| if (!lpPropertyInfo) |
| return; |
| |
| CFX_ByteStringC szPropertyName(lpPropertyInfo->name); |
| std::unique_ptr<CFXJSE_Value> lpThisValue( |
| new CFXJSE_Value(info.GetIsolate())); |
| std::unique_ptr<CFXJSE_Value> lpPropValue( |
| new CFXJSE_Value(info.GetIsolate())); |
| lpThisValue->ForceSetValue(info.This()); |
| lpPropValue->ForceSetValue(value); |
| lpPropertyInfo->setProc(lpThisValue.get(), szPropertyName, lpPropValue.get()); |
| } |
| |
| void V8ConstructorCallback_Wrapper( |
| const v8::FunctionCallbackInfo<v8::Value>& info) { |
| if (!info.IsConstructCall()) |
| return; |
| |
| const FXJSE_CLASS_DESCRIPTOR* lpClassDefinition = |
| static_cast<FXJSE_CLASS_DESCRIPTOR*>( |
| info.Data().As<v8::External>()->Value()); |
| if (!lpClassDefinition) |
| return; |
| |
| ASSERT(info.This()->InternalFieldCount()); |
| info.This()->SetAlignedPointerInInternalField(0, nullptr); |
| } |
| |
| void Context_GlobalObjToString( |
| const v8::FunctionCallbackInfo<v8::Value>& info) { |
| const FXJSE_CLASS_DESCRIPTOR* lpClass = static_cast<FXJSE_CLASS_DESCRIPTOR*>( |
| info.Data().As<v8::External>()->Value()); |
| if (!lpClass) |
| return; |
| |
| if (info.This() == info.Holder() && lpClass->name) { |
| CFX_ByteString szStringVal; |
| szStringVal.Format("[object %s]", lpClass->name); |
| info.GetReturnValue().Set(v8::String::NewFromUtf8( |
| info.GetIsolate(), szStringVal.c_str(), v8::String::kNormalString, |
| szStringVal.GetLength())); |
| return; |
| } |
| v8::Local<v8::String> local_str = |
| info.This() |
| ->ObjectProtoToString(info.GetIsolate()->GetCurrentContext()) |
| .FromMaybe(v8::Local<v8::String>()); |
| info.GetReturnValue().Set(local_str); |
| } |
| |
| void DynPropGetterAdapter_MethodCallback( |
| const v8::FunctionCallbackInfo<v8::Value>& info) { |
| v8::Local<v8::Object> hCallBackInfo = info.Data().As<v8::Object>(); |
| FXJSE_CLASS_DESCRIPTOR* lpClass = static_cast<FXJSE_CLASS_DESCRIPTOR*>( |
| hCallBackInfo->GetAlignedPointerFromInternalField(0)); |
| v8::Local<v8::String> hPropName = |
| hCallBackInfo->GetInternalField(1).As<v8::String>(); |
| ASSERT(lpClass && !hPropName.IsEmpty()); |
| v8::String::Utf8Value szPropName(hPropName); |
| CFX_ByteStringC szFxPropName = *szPropName; |
| std::unique_ptr<CFXJSE_Value> lpThisValue( |
| new CFXJSE_Value(info.GetIsolate())); |
| lpThisValue->ForceSetValue(info.This()); |
| std::unique_ptr<CFXJSE_Value> lpRetValue(new CFXJSE_Value(info.GetIsolate())); |
| CFXJSE_Arguments impl(&info, lpRetValue.get()); |
| lpClass->dynMethodCall(lpThisValue.get(), szFxPropName, impl); |
| if (!lpRetValue->DirectGetValue().IsEmpty()) |
| info.GetReturnValue().Set(lpRetValue->DirectGetValue()); |
| } |
| |
| void DynPropGetterAdapter(const FXJSE_CLASS_DESCRIPTOR* lpClass, |
| CFXJSE_Value* pObject, |
| const CFX_ByteStringC& szPropName, |
| CFXJSE_Value* pValue) { |
| ASSERT(lpClass); |
| int32_t nPropType = |
| lpClass->dynPropTypeGetter == nullptr |
| ? FXJSE_ClassPropType_Property |
| : lpClass->dynPropTypeGetter(pObject, szPropName, false); |
| if (nPropType == FXJSE_ClassPropType_Property) { |
| if (lpClass->dynPropGetter) |
| lpClass->dynPropGetter(pObject, szPropName, pValue); |
| } else if (nPropType == FXJSE_ClassPropType_Method) { |
| if (lpClass->dynMethodCall && pValue) { |
| v8::Isolate* pIsolate = pValue->GetIsolate(); |
| v8::HandleScope hscope(pIsolate); |
| v8::Local<v8::ObjectTemplate> hCallBackInfoTemplate = |
| v8::ObjectTemplate::New(pIsolate); |
| hCallBackInfoTemplate->SetInternalFieldCount(2); |
| v8::Local<v8::Object> hCallBackInfo = |
| hCallBackInfoTemplate->NewInstance(); |
| hCallBackInfo->SetAlignedPointerInInternalField( |
| 0, const_cast<FXJSE_CLASS_DESCRIPTOR*>(lpClass)); |
| hCallBackInfo->SetInternalField( |
| 1, v8::String::NewFromUtf8( |
| pIsolate, reinterpret_cast<const char*>(szPropName.raw_str()), |
| v8::String::kNormalString, szPropName.GetLength())); |
| pValue->ForceSetValue( |
| v8::Function::New(pValue->GetIsolate()->GetCurrentContext(), |
| DynPropGetterAdapter_MethodCallback, hCallBackInfo, |
| 0, v8::ConstructorBehavior::kThrow) |
| .ToLocalChecked()); |
| } |
| } |
| } |
| |
| void DynPropSetterAdapter(const FXJSE_CLASS_DESCRIPTOR* lpClass, |
| CFXJSE_Value* pObject, |
| const CFX_ByteStringC& szPropName, |
| CFXJSE_Value* pValue) { |
| ASSERT(lpClass); |
| int32_t nPropType = |
| lpClass->dynPropTypeGetter == nullptr |
| ? FXJSE_ClassPropType_Property |
| : lpClass->dynPropTypeGetter(pObject, szPropName, false); |
| if (nPropType != FXJSE_ClassPropType_Method) { |
| if (lpClass->dynPropSetter) |
| lpClass->dynPropSetter(pObject, szPropName, pValue); |
| } |
| } |
| |
| bool DynPropQueryAdapter(const FXJSE_CLASS_DESCRIPTOR* lpClass, |
| CFXJSE_Value* pObject, |
| const CFX_ByteStringC& szPropName) { |
| ASSERT(lpClass); |
| int32_t nPropType = |
| lpClass->dynPropTypeGetter == nullptr |
| ? FXJSE_ClassPropType_Property |
| : lpClass->dynPropTypeGetter(pObject, szPropName, true); |
| return nPropType != FXJSE_ClassPropType_None; |
| } |
| |
| bool DynPropDeleterAdapter(const FXJSE_CLASS_DESCRIPTOR* lpClass, |
| CFXJSE_Value* pObject, |
| const CFX_ByteStringC& szPropName) { |
| ASSERT(lpClass); |
| int32_t nPropType = |
| lpClass->dynPropTypeGetter == nullptr |
| ? FXJSE_ClassPropType_Property |
| : lpClass->dynPropTypeGetter(pObject, szPropName, false); |
| if (nPropType != FXJSE_ClassPropType_Method) { |
| if (lpClass->dynPropDeleter) |
| return lpClass->dynPropDeleter(pObject, szPropName); |
| return nPropType != FXJSE_ClassPropType_Property; |
| } |
| return false; |
| } |
| |
| void NamedPropertyQueryCallback( |
| v8::Local<v8::Name> property, |
| const v8::PropertyCallbackInfo<v8::Integer>& info) { |
| v8::Local<v8::Object> thisObject = info.This(); |
| const FXJSE_CLASS_DESCRIPTOR* lpClass = static_cast<FXJSE_CLASS_DESCRIPTOR*>( |
| info.Data().As<v8::External>()->Value()); |
| v8::Isolate* pIsolate = info.GetIsolate(); |
| v8::HandleScope scope(pIsolate); |
| v8::String::Utf8Value szPropName(property); |
| CFX_ByteStringC szFxPropName(*szPropName, szPropName.length()); |
| std::unique_ptr<CFXJSE_Value> lpThisValue( |
| new CFXJSE_Value(info.GetIsolate())); |
| lpThisValue->ForceSetValue(thisObject); |
| if (DynPropQueryAdapter(lpClass, lpThisValue.get(), szFxPropName)) { |
| info.GetReturnValue().Set(v8::DontDelete); |
| return; |
| } |
| const int32_t iV8Absent = 64; |
| info.GetReturnValue().Set(iV8Absent); |
| } |
| |
| void NamedPropertyDeleterCallback( |
| v8::Local<v8::Name> property, |
| const v8::PropertyCallbackInfo<v8::Boolean>& info) { |
| v8::Local<v8::Object> thisObject = info.This(); |
| const FXJSE_CLASS_DESCRIPTOR* lpClass = static_cast<FXJSE_CLASS_DESCRIPTOR*>( |
| info.Data().As<v8::External>()->Value()); |
| v8::Isolate* pIsolate = info.GetIsolate(); |
| v8::HandleScope scope(pIsolate); |
| v8::String::Utf8Value szPropName(property); |
| CFX_ByteStringC szFxPropName(*szPropName, szPropName.length()); |
| std::unique_ptr<CFXJSE_Value> lpThisValue( |
| new CFXJSE_Value(info.GetIsolate())); |
| lpThisValue->ForceSetValue(thisObject); |
| info.GetReturnValue().Set( |
| !!DynPropDeleterAdapter(lpClass, lpThisValue.get(), szFxPropName)); |
| } |
| |
| void NamedPropertyGetterCallback( |
| v8::Local<v8::Name> property, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| v8::Local<v8::Object> thisObject = info.This(); |
| const FXJSE_CLASS_DESCRIPTOR* lpClass = static_cast<FXJSE_CLASS_DESCRIPTOR*>( |
| info.Data().As<v8::External>()->Value()); |
| v8::String::Utf8Value szPropName(property); |
| CFX_ByteStringC szFxPropName(*szPropName, szPropName.length()); |
| std::unique_ptr<CFXJSE_Value> lpThisValue( |
| new CFXJSE_Value(info.GetIsolate())); |
| lpThisValue->ForceSetValue(thisObject); |
| std::unique_ptr<CFXJSE_Value> lpNewValue(new CFXJSE_Value(info.GetIsolate())); |
| DynPropGetterAdapter(lpClass, lpThisValue.get(), szFxPropName, |
| lpNewValue.get()); |
| info.GetReturnValue().Set(lpNewValue->DirectGetValue()); |
| } |
| |
| void NamedPropertySetterCallback( |
| v8::Local<v8::Name> property, |
| v8::Local<v8::Value> value, |
| const v8::PropertyCallbackInfo<v8::Value>& info) { |
| v8::Local<v8::Object> thisObject = info.This(); |
| const FXJSE_CLASS_DESCRIPTOR* lpClass = static_cast<FXJSE_CLASS_DESCRIPTOR*>( |
| info.Data().As<v8::External>()->Value()); |
| v8::String::Utf8Value szPropName(property); |
| CFX_ByteStringC szFxPropName(*szPropName, szPropName.length()); |
| std::unique_ptr<CFXJSE_Value> lpThisValue( |
| new CFXJSE_Value(info.GetIsolate())); |
| lpThisValue->ForceSetValue(thisObject); |
| |
| std::unique_ptr<CFXJSE_Value> lpNewValue(new CFXJSE_Value(info.GetIsolate())); |
| lpNewValue->ForceSetValue(value); |
| DynPropSetterAdapter(lpClass, lpThisValue.get(), szFxPropName, |
| lpNewValue.get()); |
| info.GetReturnValue().Set(value); |
| } |
| |
| void NamedPropertyEnumeratorCallback( |
| const v8::PropertyCallbackInfo<v8::Array>& info) { |
| const FXJSE_CLASS_DESCRIPTOR* lpClass = static_cast<FXJSE_CLASS_DESCRIPTOR*>( |
| info.Data().As<v8::External>()->Value()); |
| v8::Isolate* pIsolate = info.GetIsolate(); |
| v8::Local<v8::Array> newArray = v8::Array::New(pIsolate, lpClass->propNum); |
| for (int i = 0; i < lpClass->propNum; i++) { |
| newArray->Set( |
| i, v8::String::NewFromUtf8(pIsolate, lpClass->properties[i].name)); |
| } |
| info.GetReturnValue().Set(newArray); |
| } |
| |
| } // namespace |
| |
| // static |
| CFXJSE_Class* CFXJSE_Class::Create( |
| CFXJSE_Context* lpContext, |
| const FXJSE_CLASS_DESCRIPTOR* lpClassDefinition, |
| bool bIsJSGlobal) { |
| if (!lpContext || !lpClassDefinition) |
| return nullptr; |
| |
| CFXJSE_Class* pClass = |
| GetClassFromContext(lpContext, lpClassDefinition->name); |
| if (pClass) |
| return pClass; |
| |
| v8::Isolate* pIsolate = lpContext->m_pIsolate; |
| pClass = new CFXJSE_Class(lpContext); |
| pClass->m_szClassName = lpClassDefinition->name; |
| pClass->m_lpClassDefinition = lpClassDefinition; |
| CFXJSE_ScopeUtil_IsolateHandleRootContext scope(pIsolate); |
| v8::Local<v8::FunctionTemplate> hFunctionTemplate = v8::FunctionTemplate::New( |
| pIsolate, bIsJSGlobal ? 0 : V8ConstructorCallback_Wrapper, |
| v8::External::New( |
| pIsolate, const_cast<FXJSE_CLASS_DESCRIPTOR*>(lpClassDefinition))); |
| hFunctionTemplate->SetClassName( |
| v8::String::NewFromUtf8(pIsolate, lpClassDefinition->name)); |
| hFunctionTemplate->InstanceTemplate()->SetInternalFieldCount(1); |
| v8::Local<v8::ObjectTemplate> hObjectTemplate = |
| hFunctionTemplate->InstanceTemplate(); |
| SetUpNamedPropHandler(pIsolate, hObjectTemplate, lpClassDefinition); |
| |
| if (lpClassDefinition->propNum) { |
| for (int32_t i = 0; i < lpClassDefinition->propNum; i++) { |
| hObjectTemplate->SetNativeDataProperty( |
| v8::String::NewFromUtf8(pIsolate, |
| lpClassDefinition->properties[i].name), |
| lpClassDefinition->properties[i].getProc ? V8GetterCallback_Wrapper |
| : nullptr, |
| lpClassDefinition->properties[i].setProc ? V8SetterCallback_Wrapper |
| : nullptr, |
| v8::External::New(pIsolate, const_cast<FXJSE_PROPERTY_DESCRIPTOR*>( |
| lpClassDefinition->properties + i)), |
| static_cast<v8::PropertyAttribute>(v8::DontDelete)); |
| } |
| } |
| if (lpClassDefinition->methNum) { |
| for (int32_t i = 0; i < lpClassDefinition->methNum; i++) { |
| v8::Local<v8::FunctionTemplate> fun = v8::FunctionTemplate::New( |
| pIsolate, V8FunctionCallback_Wrapper, |
| v8::External::New(pIsolate, const_cast<FXJSE_FUNCTION_DESCRIPTOR*>( |
| lpClassDefinition->methods + i))); |
| fun->RemovePrototype(); |
| hObjectTemplate->Set( |
| v8::String::NewFromUtf8(pIsolate, lpClassDefinition->methods[i].name), |
| fun, |
| static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete)); |
| } |
| } |
| if (lpClassDefinition->constructor) { |
| if (bIsJSGlobal) { |
| hObjectTemplate->Set( |
| v8::String::NewFromUtf8(pIsolate, lpClassDefinition->name), |
| v8::FunctionTemplate::New( |
| pIsolate, V8ClassGlobalConstructorCallback_Wrapper, |
| v8::External::New(pIsolate, const_cast<FXJSE_CLASS_DESCRIPTOR*>( |
| lpClassDefinition))), |
| static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete)); |
| } else { |
| v8::Local<v8::Context> hLocalContext = |
| v8::Local<v8::Context>::New(pIsolate, lpContext->m_hContext); |
| FXJSE_GetGlobalObjectFromContext(hLocalContext) |
| ->Set(v8::String::NewFromUtf8(pIsolate, lpClassDefinition->name), |
| v8::Function::New( |
| pIsolate, V8ClassGlobalConstructorCallback_Wrapper, |
| v8::External::New(pIsolate, |
| const_cast<FXJSE_CLASS_DESCRIPTOR*>( |
| lpClassDefinition)))); |
| } |
| } |
| if (bIsJSGlobal) { |
| v8::Local<v8::FunctionTemplate> fun = v8::FunctionTemplate::New( |
| pIsolate, Context_GlobalObjToString, |
| v8::External::New( |
| pIsolate, const_cast<FXJSE_CLASS_DESCRIPTOR*>(lpClassDefinition))); |
| fun->RemovePrototype(); |
| hObjectTemplate->Set(v8::String::NewFromUtf8(pIsolate, "toString"), fun); |
| } |
| pClass->m_hTemplate.Reset(lpContext->m_pIsolate, hFunctionTemplate); |
| lpContext->m_rgClasses.push_back(std::unique_ptr<CFXJSE_Class>(pClass)); |
| return pClass; |
| } |
| |
| // static |
| CFXJSE_Class* CFXJSE_Class::GetClassFromContext(CFXJSE_Context* pContext, |
| const CFX_ByteStringC& szName) { |
| for (const auto& pClass : pContext->m_rgClasses) { |
| if (pClass->m_szClassName == szName) |
| return pClass.get(); |
| } |
| return nullptr; |
| } |
| |
| // static |
| void CFXJSE_Class::SetUpNamedPropHandler( |
| v8::Isolate* pIsolate, |
| v8::Local<v8::ObjectTemplate>& hObjectTemplate, |
| const FXJSE_CLASS_DESCRIPTOR* lpClassDefinition) { |
| v8::NamedPropertyHandlerConfiguration configuration( |
| lpClassDefinition->dynPropGetter ? NamedPropertyGetterCallback : 0, |
| lpClassDefinition->dynPropSetter ? NamedPropertySetterCallback : 0, |
| lpClassDefinition->dynPropTypeGetter ? NamedPropertyQueryCallback : 0, |
| lpClassDefinition->dynPropDeleter ? NamedPropertyDeleterCallback : 0, |
| NamedPropertyEnumeratorCallback, |
| v8::External::New(pIsolate, |
| const_cast<FXJSE_CLASS_DESCRIPTOR*>(lpClassDefinition)), |
| v8::PropertyHandlerFlags::kNonMasking); |
| hObjectTemplate->SetHandler(configuration); |
| } |
| |
| CFXJSE_Class::CFXJSE_Class(CFXJSE_Context* lpContext) |
| : m_lpClassDefinition(nullptr), m_pContext(lpContext) {} |
| |
| CFXJSE_Class::~CFXJSE_Class() {} |