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/****************************************************************************
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**
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** Copyright (C) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Script Generator project on Qt Labs.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "shellimplgenerator.h"
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#include "reporthandler.h"
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#include "fileout.h"
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#include <iostream>
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extern void declareFunctionMetaTypes(QTextStream &stream,
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const AbstractMetaFunctionList &functions,
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QSet<QString> ®isteredTypeNames);
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QString ShellImplGenerator::fileNameForClass(const AbstractMetaClass *meta_class) const
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{
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return QString("PythonQtWrapper_%1.cpp").arg(meta_class->name());
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}
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static bool include_less_than(const Include &a, const Include &b)
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{
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return a.name < b.name;
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}
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static void writeHelperCode(QTextStream &s, const AbstractMetaClass *)
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{
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}
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void ShellImplGenerator::write(QTextStream &s, const AbstractMetaClass *meta_class)
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{
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QString builtIn = ShellGenerator::isBuiltIn(meta_class->name())?"_builtin":"";
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QString pro_file_name = meta_class->package().replace(".", "_") + builtIn + "/" + meta_class->package().replace(".", "_") + builtIn + ".pri";
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priGenerator->addSource(pro_file_name, fileNameForClass(meta_class));
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s << "#include \"PythonQtWrapper_" << meta_class->name() << ".h\"" << endl << endl;
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s << "#include <PythonQtSignalReceiver.h>" << endl;
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s << "#include <PythonQtMethodInfo.h>" << endl;
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s << "#include <PythonQtConversion.h>" << endl;
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//if (!meta_class->generateShellClass())
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// return;
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IncludeList list = meta_class->typeEntry()->extraIncludes();
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qSort(list.begin(), list.end());
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foreach (const Include &inc, list) {
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ShellGenerator::writeInclude(s, inc);
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}
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s << endl;
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writeHelperCode(s, meta_class);
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// find constructors
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AbstractMetaFunctionList ctors;
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ctors = meta_class->queryFunctions(AbstractMetaClass::Constructors
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| AbstractMetaClass::WasVisible
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| AbstractMetaClass::NotRemovedFromTargetLang);
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// find member functions
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AbstractMetaFunctionList functions = getFunctionsToWrap(meta_class);
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// write metatype declarations
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{
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// QSet<QString> registeredTypeNames = m_qmetatype_declared_typenames;
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// declareFunctionMetaTypes(s, functions, registeredTypeNames);
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// s << endl;
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}
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if (meta_class->generateShellClass()) {
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AbstractMetaFunctionList virtualsForShell = getVirtualFunctionsForShell(meta_class);
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foreach (const AbstractMetaFunction *fun, virtualsForShell) {
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bool hasReturnValue = (fun->type());
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writeFunctionSignature(s, fun, meta_class, QString(),
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Option(OriginalName | ShowStatic | UnderscoreSpaces),
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"PythonQtShell_");
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s << endl << "{" << endl;
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Option typeOptions = Option(OriginalName | UnderscoreSpaces | SkipName);
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AbstractMetaArgumentList args = fun->arguments();
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s << "if (_wrapper) {" << endl;
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s << " PyObject* obj = PyObject_GetAttrString((PyObject*)_wrapper, \"" << fun->name() << "\");" << endl;
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s << " PyErr_Clear();" << endl;
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s << " if (obj && !PythonQtSlotFunction_Check(obj)) {" << endl;
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s << " static const char* argumentList[] ={\"";
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if (hasReturnValue) {
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// write the arguments, return type first
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writeTypeInfo(s, fun->type(), typeOptions);
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}
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s << "\"";
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for (int i = 0; i < args.size(); ++i) {
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s << " , \"";
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writeTypeInfo(s, args.at(i)->type(), typeOptions);
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s << "\"";
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}
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s << "};" << endl;
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s << " static const PythonQtMethodInfo* methodInfo = PythonQtMethodInfo::getCachedMethodInfoFromArgumentList(" << QString::number(args.size()+1) << ", argumentList);" << endl;
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if (hasReturnValue) {
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s << " ";
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writeTypeInfo(s, fun->type(), typeOptions);
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s << " returnValue;" << endl;
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// TODO: POD init to default is missing...
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}
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s << " void* args[" << QString::number(args.size()+1) << "] = {NULL";
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for (int i = 0; i < args.size(); ++i) {
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s << ", (void*)&" << args.at(i)->argumentName();
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}
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s << "};" << endl;
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s << " PyObject* result = PythonQtSignalTarget::call(obj, methodInfo, args, true);" << endl;
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if (hasReturnValue) {
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s << " if (result) {" << endl;
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s << " args[0] = PythonQtConv::ConvertPythonToQt(methodInfo->parameters().at(0), result, false, NULL, &returnValue);" << endl;
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s << " if (args[0]!=&returnValue) {" << endl;
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s << " if (args[0]==NULL) {" << endl;
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s << " PythonQt::priv()->handleVirtualOverloadReturnError(\"" << fun->name() << "\", methodInfo, result);" << endl;
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s << " } else {" << endl;
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s << " returnValue = *((";
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writeTypeInfo(s, fun->type(), typeOptions);
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s << "*)args[0]);" << endl;
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s << " }" << endl;
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s << " }" << endl;
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s << " }" << endl;
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}
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s << " if (result) { Py_DECREF(result); } " << endl;
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s << " Py_DECREF(obj);" << endl;
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if (hasReturnValue) {
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s << " return returnValue;" << endl;
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} else {
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s << " return;" << endl;
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}
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s << " }" << endl;
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s << "}" << endl;
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s << " ";
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if (fun->isAbstract()) {
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if (fun->type()) {
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// return empty default object
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s << "return ";
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if (fun->type()->indirections()>0) {
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s << "0;";
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} else {
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writeTypeInfo(s, fun->type(), typeOptions);
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s << "();";
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}
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}
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} else {
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if (fun->type()) {
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s << "return ";
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}
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s << meta_class->qualifiedCppName() << "::";
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s << fun->originalName() << "(";
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for (int i = 0; i < args.size(); ++i) {
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if (i > 0)
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s << ", ";
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s << args.at(i)->argumentName();
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}
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s << ");";
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}
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s << endl << "}" << endl;
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}
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}
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if (meta_class->generateShellClass() || !meta_class->isAbstract()) {
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// write constructors
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foreach (const AbstractMetaFunction *ctor, ctors) {
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if (!ctor->isPublic() || ctor->isAbstract()) { continue; }
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s << meta_class->qualifiedCppName() << "* ";
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s << "PythonQtWrapper_" << meta_class->name() << "::";
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writeFunctionSignature(s, ctor, 0, "new_", Option(OriginalName | ShowStatic));
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s << endl;
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s << "{ " << endl;
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s << "return new " << (meta_class->generateShellClass()?shellClassName(meta_class):meta_class->qualifiedCppName()) << "(";
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AbstractMetaArgumentList args = ctor->arguments();
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for (int i = 0; i < args.size(); ++i) {
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if (i > 0)
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s << ", ";
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s << args.at(i)->argumentName();
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}
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s << ");" << " }" << endl << endl;
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}
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}
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QString wrappedObject = " (*theWrappedObject)";
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// write member functions
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for (int i = 0; i < functions.size(); ++i) {
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AbstractMetaFunction *fun = functions.at(i);
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if (fun->isSlot()) continue;
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writeFunctionSignature(s, fun, meta_class, QString(),
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Option(ConvertReferenceToPtr | FirstArgIsWrappedObject | OriginalName | ShowStatic | UnderscoreSpaces),
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"PythonQtWrapper_");
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s << endl << "{" << endl;
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s << " ";
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if (ShellGenerator::isSpecialStreamingOperator(fun)) {
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s << fun->arguments().at(0)->argumentName();
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if (fun->originalName().startsWith("operator>>")) {
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s << " >> ";
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} else {
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s << " << ";
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}
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s << wrappedObject;
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} else {
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QString scriptFunctionName = fun->originalName();
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AbstractMetaArgumentList args = fun->arguments();
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// call the C++ implementation
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if (fun->type()) {
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s << "return ";
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// call the C++ implementation
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if (fun->type()->isReference()) {
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s << "&";
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}
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}
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s << "(";
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if (scriptFunctionName.startsWith("operator>>")) {
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s << wrappedObject << " >>" << args.at(0)->argumentName();
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} else if (scriptFunctionName.startsWith("operator<<")) {
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s << wrappedObject << " <<" << args.at(0)->argumentName();
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} else if (scriptFunctionName.startsWith("operator[]")) {
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s << wrappedObject << "[" << args.at(0)->argumentName() << "]";
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} else if (scriptFunctionName.startsWith("operator") && args.size()==1) {
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QString op = scriptFunctionName.mid(8);
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s << wrappedObject << op << " " << args.at(0)->argumentName();
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} else {
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if (fun->isStatic()) {
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s << meta_class->qualifiedCppName() << "::";
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} else {
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if (!fun->isPublic() || fun->isVirtual()) {
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s << " ((" << promoterClassName(meta_class) << "*)theWrappedObject)->promoted_";
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} else {
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s << " theWrappedObject->";
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}
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}
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s << fun->originalName() << "(";
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for (int i = 0; i < args.size(); ++i) {
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if (i > 0)
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s << ", ";
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s << args.at(i)->argumentName();
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}
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s << ")";
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}
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s << ")";
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}
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s << ";" << endl;
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s << "}" << endl << endl;
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}
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if (meta_class->hasDefaultToStringFunction()) {
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s << "QString PythonQtWrapper_" << meta_class->name() << "::py_toString(" << meta_class->qualifiedCppName() << "* obj) { return obj->toString(); }" << endl;
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} else if (meta_class->hasToStringCapability()) {
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FunctionModelItem fun = meta_class->hasToStringCapability();
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int indirections = fun->arguments().at(1)->type().indirections();
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QString deref = QLatin1String(indirections == 0 ? "*" : "");
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s << "QString PythonQtWrapper_" << meta_class->name() << "::py_toString(" << meta_class->qualifiedCppName() << "* obj) {" << endl;
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s << " QString result;" << endl;
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s << " QDebug d(&result);" << endl;
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s << " d << " << deref << "obj;" << endl;
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s << " return result;" << endl;
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s << "}" << endl << endl;
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}
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writeInjectedCode(s, meta_class);
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}
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void ShellImplGenerator::writeInjectedCode(QTextStream &s, const AbstractMetaClass *meta_class)
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{
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CodeSnipList code_snips = meta_class->typeEntry()->codeSnips();
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foreach (const CodeSnip &cs, code_snips) {
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if (cs.language == TypeSystem::PyWrapperCode) {
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s << cs.code() << endl;
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}
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}
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}
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