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/****************************************************************************
**
** Copyright (C) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Script Generator project on Qt Labs.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "shellimplgenerator.h"
#include "reporthandler.h"
#include "fileout.h"
extern void declareFunctionMetaTypes(QTextStream &stream,
const AbstractMetaFunctionList &functions,
QSet<QString> ®isteredTypeNames);
QString ShellImplGenerator::fileNameForClass(const AbstractMetaClass *meta_class) const
{
return QString("qtscriptshell_%1.cpp").arg(meta_class->name());
}
static bool include_less_than(const Include &a, const Include &b)
{
return a.name < b.name;
}
static void writeHelperCode(QTextStream &s, const AbstractMetaClass *)
{
s << "#define QTSCRIPT_IS_GENERATED_FUNCTION(fun) ((fun.data().toUInt32() & 0xFFFF0000) == 0xBABE0000)" << endl;
s << endl;
}
void writeQtScriptQtBindingsLicense(QTextStream &stream);
void ShellImplGenerator::write(QTextStream &s, const AbstractMetaClass *meta_class)
{
if (FileOut::license)
writeQtScriptQtBindingsLicense(s);
QString packName = meta_class->package().replace(".", "_");
priGenerator->addSource(packName, fileNameForClass(meta_class));
s << "#include \"qtscriptshell_" << meta_class->name() << ".h\"" << endl << endl;
if (!meta_class->generateShellClass())
return;
s << "#include <QtScript/QScriptEngine>" << endl;
IncludeList list = meta_class->typeEntry()->extraIncludes();
qSort(list.begin(), list.end(), include_less_than);
foreach (const Include &inc, list) {
if (inc.type == Include::TargetLangImport)
continue;
s << "#include ";
if (inc.type == Include::LocalPath)
s << "\"";
else
s << "<";
s << inc.name;
if (inc.type == Include::LocalPath)
s << "\"";
else
s << ">";
s << endl;
}
s << endl;
writeHelperCode(s, meta_class);
// find constructors
AbstractMetaFunctionList ctors;
ctors = meta_class->queryFunctions(AbstractMetaClass::Constructors
| AbstractMetaClass::WasVisible
| AbstractMetaClass::NotRemovedFromTargetLang);
// find member functions
AbstractMetaFunctionList functions = meta_class->queryFunctions(
AbstractMetaClass:: VirtualFunctions | AbstractMetaClass::WasVisible
| AbstractMetaClass::NotRemovedFromTargetLang
);
// write metatype declarations
{
QSet<QString> registeredTypeNames = m_qmetatype_declared_typenames;
declareFunctionMetaTypes(s, functions, registeredTypeNames);
s << endl;
}
// write constructors
foreach (const AbstractMetaFunction *ctor, ctors) {
s << "QtScriptShell_" << meta_class->name() << "::";
writeFunctionSignature(s, ctor, 0, QString(), Option(OriginalName | ShowStatic));
s << endl;
s << " : " << meta_class->qualifiedCppName() << "(";
AbstractMetaArgumentList args = ctor->arguments();
for (int i = 0; i < args.size(); ++i) {
if (i > 0)
s << ", ";
s << args.at(i)->argumentName();
}
s << ")" << " {}" << endl << endl;
}
// write destructor
s << "QtScriptShell_" << meta_class->name() << "::"
<< "~QtScriptShell_" << meta_class->name() << "()"
<< " {}" << endl << endl;
// write member functions
for (int i = 0; i < functions.size(); ++i) {
AbstractMetaFunction *fun = functions.at(i);
writeFunctionSignature(s, fun, meta_class, QString(),
Option(OriginalName | ShowStatic | UnderscoreSpaces),
"QtScriptShell_");
s << endl << "{" << endl;
QString scriptFunctionName = fun->name();
{
QPropertySpec *read = 0;
for (const AbstractMetaClass *cls = meta_class; !read && cls; cls = cls->baseClass())
read = cls->propertySpecForRead(fun->name());
if (read && (read->name() == fun->name())) {
// use different name to avoid infinite recursion
// ### not sure if this is the best solution though...
scriptFunctionName.prepend("_qs_");
}
}
s << " QScriptValue _q_function = __qtscript_self.property(\""
<< scriptFunctionName << "\");" << endl;
s << " if (!_q_function.isFunction() || QTSCRIPT_IS_GENERATED_FUNCTION(_q_function)" << endl
<< " || (__qtscript_self.propertyFlags(\"" << scriptFunctionName << "\") & QScriptValue::QObjectMember)) {" << endl;
AbstractMetaArgumentList args = fun->arguments();
s << " ";
if (fun->isAbstract()) {
s << "qFatal(\"" << meta_class->name() << "::" << fun->name()
<< "() is abstract!\");" << endl;
} else {
// call the C++ implementation
if (fun->type())
s << "return ";
s << meta_class->qualifiedCppName() << "::" << fun->originalName() << "(";
for (int i = 0; i < args.size(); ++i) {
if (i > 0)
s << ", ";
s << args.at(i)->argumentName();
}
s << ");" << endl;
}
s << " } else {" << endl;
// call the script function
if (args.size() > 0)
s << " QScriptEngine *_q_engine = __qtscript_self.engine();" << endl;
s << " ";
if (fun->type()) {
s << "return qscriptvalue_cast<";
writeTypeInfo(s, fun->type());
s << ">(";
}
s << "_q_function.call(__qtscript_self";
if (args.size() > 0) {
s << "," << endl;
s << " QScriptValueList()";
int i = 0;
for (int j = 0; j < args.size(); ++j) {
if (fun->argumentRemoved(j+1))
continue;
s << endl << " << ";
s << "qScriptValueFromValue(_q_engine, ";
AbstractMetaType *atype = args.at(j)->type();
QString asig = atype->cppSignature();
bool constCastArg = asig.endsWith('*') && asig.startsWith("const ");
if (constCastArg)
s << "const_cast<" << asig.mid(6) << ">(";
s << args.at(i)->argumentName() << ")";
if (constCastArg)
s << ")";
++i;
}
}
s << ")";
if (fun->type())
s << ")";
s << ";" << endl;
s << " }" << endl;
s << "}" << endl << endl;
}
}
void ShellImplGenerator::writeInjectedCode(QTextStream &s, const AbstractMetaClass *meta_class)
{
CodeSnipList code_snips = meta_class->typeEntry()->codeSnips();
foreach (const CodeSnip &cs, code_snips) {
if (cs.language == TypeSystem::ShellCode) {
s << cs.code() << endl;
}
}
}
|
