// 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/util_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); FXJSE_HCLASS FXJSE_DefineClass(FXJSE_HCONTEXT hContext, const FXJSE_CLASS* lpClass) { CFXJSE_Context* lpContext = reinterpret_cast<CFXJSE_Context*>(hContext); ASSERT(lpContext); return reinterpret_cast<FXJSE_HCLASS>( CFXJSE_Class::Create(lpContext, lpClass, FALSE)); } static void FXJSE_V8FunctionCallback_Wrapper( const v8::FunctionCallbackInfo<v8::Value>& info) { const FXJSE_FUNCTION* lpFunctionInfo = static_cast<FXJSE_FUNCTION*>(info.Data().As<v8::External>()->Value()); if (!lpFunctionInfo) { return; } CFX_ByteStringC szFunctionName(lpFunctionInfo->name); CFXJSE_Value* lpThisValue = CFXJSE_Value::Create(info.GetIsolate()); lpThisValue->ForceSetValue(info.This()); CFXJSE_Value* lpRetValue = CFXJSE_Value::Create(info.GetIsolate()); CFXJSE_ArgumentsImpl impl = {&info, lpRetValue}; lpFunctionInfo->callbackProc(reinterpret_cast<FXJSE_HOBJECT>(lpThisValue), szFunctionName, reinterpret_cast<CFXJSE_Arguments&>(impl)); if (!lpRetValue->DirectGetValue().IsEmpty()) { info.GetReturnValue().Set(lpRetValue->DirectGetValue()); } delete lpRetValue; lpRetValue = NULL; delete lpThisValue; lpThisValue = NULL; } static void FXJSE_V8ClassGlobalConstructorCallback_Wrapper( const v8::FunctionCallbackInfo<v8::Value>& info) { const FXJSE_CLASS* lpClassDefinition = static_cast<FXJSE_CLASS*>(info.Data().As<v8::External>()->Value()); if (!lpClassDefinition) { return; } CFX_ByteStringC szFunctionName(lpClassDefinition->name); CFXJSE_Value* lpThisValue = CFXJSE_Value::Create(info.GetIsolate()); lpThisValue->ForceSetValue(info.This()); CFXJSE_Value* lpRetValue = CFXJSE_Value::Create(info.GetIsolate()); CFXJSE_ArgumentsImpl impl = {&info, lpRetValue}; lpClassDefinition->constructor(reinterpret_cast<FXJSE_HOBJECT>(lpThisValue), szFunctionName, reinterpret_cast<CFXJSE_Arguments&>(impl)); if (!lpRetValue->DirectGetValue().IsEmpty()) { info.GetReturnValue().Set(lpRetValue->DirectGetValue()); } delete lpRetValue; lpRetValue = NULL; delete lpThisValue; lpThisValue = NULL; } static void FXJSE_V8GetterCallback_Wrapper( v8::Local<v8::String> property, const v8::PropertyCallbackInfo<v8::Value>& info) { const FXJSE_PROPERTY* lpPropertyInfo = static_cast<FXJSE_PROPERTY*>(info.Data().As<v8::External>()->Value()); if (!lpPropertyInfo) { return; } CFX_ByteStringC szPropertyName(lpPropertyInfo->name); CFXJSE_Value* lpThisValue = CFXJSE_Value::Create(info.GetIsolate()); CFXJSE_Value* lpPropValue = CFXJSE_Value::Create(info.GetIsolate()); lpThisValue->ForceSetValue(info.This()); lpPropertyInfo->getProc(reinterpret_cast<FXJSE_HOBJECT>(lpThisValue), szPropertyName, reinterpret_cast<FXJSE_HVALUE>(lpPropValue)); info.GetReturnValue().Set(lpPropValue->DirectGetValue()); delete lpThisValue; lpThisValue = NULL; delete lpPropValue; lpPropValue = NULL; } static void FXJSE_V8SetterCallback_Wrapper( v8::Local<v8::String> property, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<void>& info) { const FXJSE_PROPERTY* lpPropertyInfo = static_cast<FXJSE_PROPERTY*>(info.Data().As<v8::External>()->Value()); if (!lpPropertyInfo) { return; } CFX_ByteStringC szPropertyName(lpPropertyInfo->name); CFXJSE_Value* lpThisValue = CFXJSE_Value::Create(info.GetIsolate()); CFXJSE_Value* lpPropValue = CFXJSE_Value::Create(info.GetIsolate()); lpThisValue->ForceSetValue(info.This()); lpPropValue->ForceSetValue(value); lpPropertyInfo->setProc(reinterpret_cast<FXJSE_HOBJECT>(lpThisValue), szPropertyName, reinterpret_cast<FXJSE_HVALUE>(lpPropValue)); delete lpThisValue; lpThisValue = NULL; delete lpPropValue; lpPropValue = NULL; } static void FXJSE_V8ConstructorCallback_Wrapper( const v8::FunctionCallbackInfo<v8::Value>& info) { const FXJSE_CLASS* lpClassDefinition = static_cast<FXJSE_CLASS*>(info.Data().As<v8::External>()->Value()); if (!lpClassDefinition) { return; } ASSERT(info.This()->InternalFieldCount()); info.This()->SetAlignedPointerInInternalField(0, NULL); } FXJSE_HRUNTIME CFXJSE_Arguments::GetRuntime() const { const CFXJSE_ArgumentsImpl* lpArguments = reinterpret_cast<const CFXJSE_ArgumentsImpl* const>(this); return reinterpret_cast<FXJSE_HRUNTIME>( lpArguments->m_pRetValue->GetIsolate()); } int32_t CFXJSE_Arguments::GetLength() const { const CFXJSE_ArgumentsImpl* lpArguments = reinterpret_cast<const CFXJSE_ArgumentsImpl* const>(this); return lpArguments->m_pInfo->Length(); } FXJSE_HVALUE CFXJSE_Arguments::GetValue(int32_t index) const { const CFXJSE_ArgumentsImpl* lpArguments = reinterpret_cast<const CFXJSE_ArgumentsImpl* const>(this); CFXJSE_Value* lpArgValue = CFXJSE_Value::Create(v8::Isolate::GetCurrent()); ASSERT(lpArgValue); lpArgValue->ForceSetValue((*lpArguments->m_pInfo)[index]); return reinterpret_cast<FXJSE_HVALUE>(lpArgValue); } FX_BOOL CFXJSE_Arguments::GetBoolean(int32_t index) const { const CFXJSE_ArgumentsImpl* lpArguments = reinterpret_cast<const CFXJSE_ArgumentsImpl* const>(this); return (*lpArguments->m_pInfo)[index]->BooleanValue(); } int32_t CFXJSE_Arguments::GetInt32(int32_t index) const { const CFXJSE_ArgumentsImpl* lpArguments = reinterpret_cast<const CFXJSE_ArgumentsImpl* const>(this); return static_cast<int32_t>((*lpArguments->m_pInfo)[index]->NumberValue()); } FX_FLOAT CFXJSE_Arguments::GetFloat(int32_t index) const { const CFXJSE_ArgumentsImpl* lpArguments = reinterpret_cast<const CFXJSE_ArgumentsImpl* const>(this); return static_cast<FX_FLOAT>((*lpArguments->m_pInfo)[index]->NumberValue()); } CFX_ByteString CFXJSE_Arguments::GetUTF8String(int32_t index) const { const CFXJSE_ArgumentsImpl* lpArguments = reinterpret_cast<const CFXJSE_ArgumentsImpl* const>(this); v8::Local<v8::String> hString = (*lpArguments->m_pInfo)[index]->ToString(); v8::String::Utf8Value szStringVal(hString); return CFX_ByteString(*szStringVal); } void* CFXJSE_Arguments::GetObject(int32_t index, FXJSE_HCLASS hClass) const { const CFXJSE_ArgumentsImpl* lpArguments = reinterpret_cast<const CFXJSE_ArgumentsImpl* const>(this); v8::Local<v8::Value> hValue = (*lpArguments->m_pInfo)[index]; ASSERT(!hValue.IsEmpty()); if (!hValue->IsObject()) { return NULL; } CFXJSE_Class* lpClass = reinterpret_cast<CFXJSE_Class*>(hClass); return FXJSE_RetrieveObjectBinding(hValue.As<v8::Object>(), lpClass); } FXJSE_HVALUE CFXJSE_Arguments::GetReturnValue() { const CFXJSE_ArgumentsImpl* lpArguments = reinterpret_cast<const CFXJSE_ArgumentsImpl* const>(this); return reinterpret_cast<FXJSE_HVALUE>(lpArguments->m_pRetValue); } static void FXJSE_Context_GlobalObjToString( const v8::FunctionCallbackInfo<v8::Value>& info) { const FXJSE_CLASS* lpClass = static_cast<FXJSE_CLASS*>(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* 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*>(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*>( 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*>( 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*>(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*>( 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*>(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; }