// 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 "xfa/fxjse/class.h" #include "xfa/fxjse/cfxjse_arguments.h" #include "xfa/fxjse/context.h" #include "xfa/fxjse/scope_inline.h" #include "xfa/fxjse/value.h" static void FXJSE_V8ConstructorCallback_Wrapper( const v8::FunctionCallbackInfo<v8::Value>& info); static void FXJSE_V8FunctionCallback_Wrapper( const v8::FunctionCallbackInfo<v8::Value>& info); static void FXJSE_V8GetterCallback_Wrapper( v8::Local<v8::String> property, const v8::PropertyCallbackInfo<v8::Value>& info); static void FXJSE_V8SetterCallback_Wrapper( v8::Local<v8::String> property, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<void>& info); CFXJSE_Class* FXJSE_DefineClass(CFXJSE_Context* pContext, const FXJSE_CLASS_DESCRIPTOR* lpClass) { ASSERT(pContext); return CFXJSE_Class::Create(pContext, lpClass, FALSE); } static void FXJSE_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()); } } static void FXJSE_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()); } } static void FXJSE_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()); } static void FXJSE_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()); } static void FXJSE_V8ConstructorCallback_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; } ASSERT(info.This()->InternalFieldCount()); info.This()->SetAlignedPointerInInternalField(0, NULL); } v8::Isolate* CFXJSE_Arguments::GetRuntime() const { return m_pRetValue->GetIsolate(); } int32_t CFXJSE_Arguments::GetLength() const { return m_pInfo->Length(); } std::unique_ptr<CFXJSE_Value> CFXJSE_Arguments::GetValue(int32_t index) const { std::unique_ptr<CFXJSE_Value> lpArgValue( new CFXJSE_Value(v8::Isolate::GetCurrent())); lpArgValue->ForceSetValue((*m_pInfo)[index]); return lpArgValue; } FX_BOOL CFXJSE_Arguments::GetBoolean(int32_t index) const { return (*m_pInfo)[index]->BooleanValue(); } int32_t CFXJSE_Arguments::GetInt32(int32_t index) const { return static_cast<int32_t>((*m_pInfo)[index]->NumberValue()); } FX_FLOAT CFXJSE_Arguments::GetFloat(int32_t index) const { return static_cast<FX_FLOAT>((*m_pInfo)[index]->NumberValue()); } CFX_ByteString CFXJSE_Arguments::GetUTF8String(int32_t index) const { v8::Local<v8::String> hString = (*m_pInfo)[index]->ToString(); v8::String::Utf8Value szStringVal(hString); return CFX_ByteString(*szStringVal); } void* CFXJSE_Arguments::GetObject(int32_t index, CFXJSE_Class* pClass) const { v8::Local<v8::Value> hValue = (*m_pInfo)[index]; ASSERT(!hValue.IsEmpty()); if (!hValue->IsObject()) return nullptr; return FXJSE_RetrieveObjectBinding(hValue.As<v8::Object>(), pClass); } CFXJSE_Value* CFXJSE_Arguments::GetReturnValue() { return m_pRetValue; } static void FXJSE_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())); } else { v8::Local<v8::String> local_str = info.This() ->ObjectProtoToString(info.GetIsolate()->GetCurrentContext()) .FromMaybe(v8::Local<v8::String>()); info.GetReturnValue().Set(local_str); } } CFXJSE_Class* CFXJSE_Class::Create( CFXJSE_Context* lpContext, const FXJSE_CLASS_DESCRIPTOR* lpClassDefinition, FX_BOOL bIsJSGlobal) { if (!lpContext || !lpClassDefinition) { return NULL; } 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 : FXJSE_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 ? FXJSE_V8GetterCallback_Wrapper : NULL, lpClassDefinition->properties[i].setProc ? FXJSE_V8SetterCallback_Wrapper : NULL, 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++) { hObjectTemplate->Set( v8::String::NewFromUtf8(pIsolate, lpClassDefinition->methods[i].name), v8::FunctionTemplate::New( pIsolate, FXJSE_V8FunctionCallback_Wrapper, v8::External::New(pIsolate, const_cast<FXJSE_FUNCTION_DESCRIPTOR*>( lpClassDefinition->methods + i))), 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, FXJSE_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, FXJSE_V8ClassGlobalConstructorCallback_Wrapper, v8::External::New(pIsolate, const_cast<FXJSE_CLASS_DESCRIPTOR*>( lpClassDefinition)))); } } if (bIsJSGlobal) { hObjectTemplate->Set( v8::String::NewFromUtf8(pIsolate, "toString"), v8::FunctionTemplate::New( pIsolate, FXJSE_Context_GlobalObjToString, v8::External::New(pIsolate, const_cast<FXJSE_CLASS_DESCRIPTOR*>( lpClassDefinition)))); } pClass->m_hTemplate.Reset(lpContext->m_pIsolate, hFunctionTemplate); lpContext->m_rgClasses.push_back(std::unique_ptr<CFXJSE_Class>(pClass)); return pClass; } 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; }