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/*
* This file is part of the Shiboken Python Bindings Generator project.
*
* Copyright (C) 2009-2010 Nokia Corporation and/or its subsidiary(-ies).
*
* Contact: PySide team <contact@pyside.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#ifndef CPPGENERATOR_H
#define CPPGENERATOR_H
#include "shibokengenerator.h"
#include "overloaddata.h"
/**
* The CppGenerator generate the implementations of C++ bindings classes.
*/
class CppGenerator : public ShibokenGenerator
{
public:
CppGenerator();
protected:
QString fileNameForClass(const AbstractMetaClass* metaClass) const;
QList<AbstractMetaFunctionList> filterGroupedOperatorFunctions(const AbstractMetaClass* metaClass,
uint query);
void generateClass(QTextStream& s, const AbstractMetaClass* metaClass);
void finishGeneration();
private:
void writeConstructorNative(QTextStream& s, const AbstractMetaFunction* func);
void writeDestructorNative(QTextStream& s, const AbstractMetaClass* metaClass);
void writeVirtualMethodNative(QTextStream& s, const AbstractMetaFunction* func);
void writeMetaObjectMethod(QTextStream& s, const AbstractMetaClass* metaClass);
void writeConstructorWrapper(QTextStream &s, const AbstractMetaFunctionList overloads);
void writeDestructorWrapper(QTextStream& s, const AbstractMetaClass* metaClass);
void writeMinimalConstructorCallArguments(QTextStream& s, const AbstractMetaClass* metaClass);
void writeMinimalConstructorCallArguments(QTextStream& s, const AbstractMetaType* type);
void writeMethodWrapper(QTextStream &s, const AbstractMetaFunctionList overloads);
void writeArgumentsInitializer(QTextStream& s, OverloadData& overloadData);
void writeNamedArgumentsCheck(QTextStream& s, OverloadData& overloadData);
void writeCppSelfDefinition(QTextStream& s, const AbstractMetaFunction* func);
void writeErrorSection(QTextStream& s, OverloadData& overloadData);
/**
* Writes the check section for the validity of wrapped C++ objects.
* \param s text stream to write
* \param argName Python argument name
* \param type the TypeEntry passed when the validity check must confirm the type of the Python wrapper to be checked
*/
void writeInvalidCppObjectCheck(QTextStream& s, QString pyArgName = "self", const TypeEntry* type = 0);
void writeTypeCheck(QTextStream& s, const AbstractMetaType* argType, QString argumentName, bool isNumber = false, QString customType = "");
void writeTypeCheck(QTextStream& s, const OverloadData* overloadData, QString argumentName);
void writeTypeDiscoveryFunction(QTextStream& s, const AbstractMetaClass* metaClass);
void writeSetattroFunction(QTextStream& s, const AbstractMetaClass* metaClass);
void writeGetattroFunction(QTextStream& s, const AbstractMetaClass* metaClass);
/**
* Writes Python to C++ conversions for arguments on Python wrappers.
* If implicit conversions, and thus new object allocation, are needed,
* code to deallocate a possible new instance is also generated.
* \param s text stream to write
* \param argType a pointer to the argument type to be converted
* \param argName C++ argument name
* \param pyArgName Python argument name
* \param context the current meta class
* \param defaultValue an optional default value to be used instead of the conversion result
*/
void writeArgumentConversion(QTextStream& s, const AbstractMetaType* argType,
QString argName, QString pyArgName,
const AbstractMetaClass* context = 0,
QString defaultValue = QString());
/// Convenience method to call writeArgumentConversion with an AbstractMetaArgument instead of an AbstractMetaType.
void writeArgumentConversion(QTextStream& s, const AbstractMetaArgument* arg,
QString argName, QString pyArgName,
const AbstractMetaClass* context = 0,
QString defaultValue = QString())
{
writeArgumentConversion(s, arg->type(), argName, pyArgName, context, defaultValue);
}
/**
* Set the Python method wrapper return value variable to Py_None if
* there are return types different from void in any of the other overloads
* for the function passed as parameter.
* \param s text stream to write
* \param func a pointer to the function that will possibly return Py_None
* \param thereIsReturnValue indicates if the return type of any of the other overloads
* for this function is different from 'void'
*/
void writeNoneReturn(QTextStream& s, const AbstractMetaFunction* func, bool thereIsReturnValue);
/**
* Writes the Python function wrapper overload decisor that selects which C++
* method/function to call with the received Python arguments.
* \param s text stream to write
* \param overloadData the overload data describing all the possible overloads for the function/method
*/
void writeOverloadedFunctionDecisor(QTextStream& s, const OverloadData& overloadData);
/// Recursive auxiliar method to the other writeOverloadedFunctionDecisor.
void writeOverloadedFunctionDecisorEngine(QTextStream& s, const OverloadData* parentOverloadData);
/// Writes calls to all the possible method/function overloads.
void writeFunctionCalls(QTextStream& s, const OverloadData& overloadData);
/// Writes the call to a single function usually from a collection of overloads.
void writeSingleFunctionCall(QTextStream& s, const OverloadData& overloadData, const AbstractMetaFunction* func = 0);
void writeNamedArgumentResolution(QTextStream& s, const AbstractMetaFunction* func, bool usePyArgs);
/// Returns a string containing the name of an argument for the given function and argument index.
QString argumentNameFromIndex(const AbstractMetaFunction* func, int argIndex, const AbstractMetaClass** wrappedClass);
void writeMethodCall(QTextStream& s, const AbstractMetaFunction* func, int maxArgs = 0);
void writeClassRegister(QTextStream& s, const AbstractMetaClass* metaClass);
void writeClassDefinition(QTextStream& s, const AbstractMetaClass* metaClass);
void writeMethodDefinitionEntry(QTextStream& s, const AbstractMetaFunctionList overloads);
void writeMethodDefinition(QTextStream& s, const AbstractMetaFunctionList overloads);
/// Writes the implementation of all methods part of python sequence protocol
void writeSequenceMethods(QTextStream& s, const AbstractMetaClass* metaClass);
/// Writes the struct PySequenceMethods for types thats supports the python sequence protocol
void writeTypeAsSequenceDefinition(QTextStream& s, const AbstractMetaClass* metaClass);
void writeTypeAsNumberDefinition(QTextStream& s, const AbstractMetaClass* metaClass);
void writeGetterFunction(QTextStream& s, const AbstractMetaField* metaField);
void writeSetterFunction(QTextStream& s, const AbstractMetaField* metaField);
void writeRichCompareFunction(QTextStream& s, const AbstractMetaClass* metaClass);
void writeFlagsNewMethod(QTextStream& s, const FlagsTypeEntry* cppFlags);
void writeEnumNewMethod(QTextStream& s, const AbstractMetaEnum* cppEnum);
void writeEnumDefinition(QTextStream& s, const AbstractMetaEnum* metaEnum);
void writeEnumInitialization(QTextStream& s, const AbstractMetaEnum* metaEnum);
void writeSignalInitialization(QTextStream& s, const AbstractMetaClass* metaClass);
void writeFlagsDefinition(QTextStream& s, const AbstractMetaEnum* cppEnum);
void writeFlagsMethods(QTextStream& s, const AbstractMetaEnum* cppEnum);
void writeFlagsNumberMethodsDefinition(QTextStream& s, const AbstractMetaEnum* cppEnum);
void writeFlagsBinaryOperator(QTextStream& s, const AbstractMetaEnum* cppEnum,
QString pyOpName, QString cppOpName);
void writeFlagsUnaryOperator(QTextStream& s, const AbstractMetaEnum* cppEnum,
QString pyOpName, QString cppOpName, bool boolResult = false);
/// Writes the function that registers the multiple inheritance information for the classes that need it.
void writeMultipleInheritanceInitializerFunction(QTextStream& s, const AbstractMetaClass* metaClass);
/// Writes the implementation of special cast functions, used when we need to cast a class with mulltiple inheritance.
void writeSpecialCastFunction(QTextStream& s, const AbstractMetaClass* metaClass);
void writeExtendedIsConvertibleFunction(QTextStream& s, const TypeEntry* externalType, const QList<const AbstractMetaClass*>& conversions);
void writeExtendedToCppFunction(QTextStream& s, const TypeEntry* externalType, const QList<const AbstractMetaClass*>& conversions);
void writeExtendedConverterInitialization(QTextStream& s, const TypeEntry* externalType, const QList<const AbstractMetaClass*>& conversions);
void writeParentChildManagement(QTextStream& s, const AbstractMetaFunction* func, bool userHeuristicForReturn);
bool writeParentChildManagement(QTextStream& s, const AbstractMetaFunction* func, int argIndex, bool userHeuristicPolicy);
void writeReturnValueHeuristics(QTextStream& s, const AbstractMetaFunction* func, const QString& self = "self");
/**
* Returns the multiple inheritance initializer function for the given class.
* \param metaClass the class for whom the function name must be generated.
* \return name of the multiple inheritance information initializer function or
* an empty string if there is no multiple inheritance in its ancestry.
*/
QString multipleInheritanceInitializerFunctionName(const AbstractMetaClass* metaClass);
/// Returns a list of all classes to which the given class could be casted.
QStringList getAncestorMultipleInheritance(const AbstractMetaClass* metaClass);
/// Returns true if the given class supports the python sequence protocol
bool supportsSequenceProtocol(const AbstractMetaClass* metaClass);
/// Returns true if generator should produce getters and setters for the given class.
bool shouldGenerateGetSetList(const AbstractMetaClass* metaClass);
/// Returns true if the Python wrapper for the received OverloadData must accept a list of arguments.
static bool pythonFunctionWrapperUsesListOfArguments(const OverloadData& overloadData);
void writeHashFunction(QTextStream& s, const AbstractMetaClass* metaClass);
void writeObjCopierFunction(QTextStream& s, const AbstractMetaClass* metaClass);
// Maps special function names to function parameters and return types
// used by CPython API in the sequence protocol.
QHash<QString, QPair<QString, QString> > m_sequenceProtocol;
int m_currentErrorCode;
};
#endif // CPPGENERATOR_H
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