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Diffstat (limited to 'libshiboken/conversions.h')
-rw-r--r-- | libshiboken/conversions.h | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/libshiboken/conversions.h b/libshiboken/conversions.h new file mode 100644 index 000000000..cbd4ee550 --- /dev/null +++ b/libshiboken/conversions.h @@ -0,0 +1,191 @@ +/* + * This file is part of the Shiboken Python Binding Generator project. + * + * Copyright (C) 2009 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 Lesser General Public License + * version 2.1 as published by the Free Software Foundation. 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. + * + * As a special exception to the GNU Lesser General Public License + * version 2.1, the object code form of a "work that uses the Library" + * may incorporate material from a header file that is part of the + * Library. You may distribute such object code under terms of your + * choice, provided that the incorporated material (i) does not exceed + * more than 5% of the total size of the Library; and (ii) is limited to + * numerical parameters, data structure layouts, accessors, macros, + * inline functions and templates. + * + * 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser 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 CONVERSIONS_H +#define CONVERSIONS_H + +#include <Python.h> +#include <basewrapper.h> +#include <bindingmanager.h> + +namespace Shiboken +{ + +template <typename T> +struct ValueHolder +{ + explicit ValueHolder(T val) : value(val) {} + T value; +}; + +template <typename T> +struct Converter +{ + static PyObject* toPython(ValueHolder<T> cppobj) { + return 0; + } + static T toCpp(PyObject* pyobj) { + return T(); + } +}; + +// Object Types --------------------------------------------------------------- +template <> +struct Converter<void*> +{ + static PyObject* toPython(ValueHolder<void*> cppobj) + { + PyObject* obj = BindingManager::instance().retrieveWrapper(cppobj.value); + Py_XINCREF(obj); + return obj; + } + static void* toCpp(PyObject* pyobj) + { + return ((Shiboken::PyBaseWrapper*) pyobj)->cptr; + } +}; + +// Primitive Types ------------------------------------------------------------ +template <> +struct Converter<bool> +{ + static PyObject* toPython(ValueHolder<bool> holder) + { + return PyBool_FromLong(holder.value); + } + static bool toCpp(PyObject* pyobj) + { + return pyobj == Py_True; + } +}; + +template <typename PyIntEquiv> +struct Converter_PyInt +{ + static PyObject* toPython(ValueHolder<PyIntEquiv> holder) + { + return PyInt_FromLong((long) holder.value); + } + static PyIntEquiv toCpp(PyObject* pyobj) + { + if (PyFloat_Check(pyobj)) + return (PyIntEquiv) PyFloat_AS_DOUBLE(pyobj); + return (PyIntEquiv) PyInt_AS_LONG(pyobj); + } +}; + +template <> struct Converter<char> : Converter_PyInt<char> {}; +template <> struct Converter<unsigned char> : Converter_PyInt<unsigned char> {}; +template <> struct Converter<int> : Converter_PyInt<int> {}; +template <> struct Converter<unsigned int> : Converter_PyInt<unsigned int> {}; +template <> struct Converter<short> : Converter_PyInt<short> {}; +template <> struct Converter<unsigned short> : Converter_PyInt<unsigned short> {}; +template <> struct Converter<long> : Converter_PyInt<long> {}; + +template <> +struct Converter<unsigned long> +{ + static PyObject* toPython(ValueHolder<unsigned long> holder) + { + return PyLong_FromUnsignedLong(holder.value); + } + static unsigned long toCpp(PyObject* pyobj) + { + return (unsigned long) PyLong_AsUnsignedLong(pyobj); + } +}; + +template <> +struct Converter<PY_LONG_LONG> +{ + static PyObject* toPython(ValueHolder<PY_LONG_LONG> holder) + { + return PyLong_FromLongLong(holder.value); + } + static PY_LONG_LONG toCpp(PyObject* pyobj) + { + return (PY_LONG_LONG) PyLong_AsLongLong(pyobj); + } +}; + +template <> +struct Converter<unsigned PY_LONG_LONG> +{ + static PyObject* toPython(ValueHolder<unsigned PY_LONG_LONG> holder) + { + return PyLong_FromUnsignedLongLong(holder.value); + } + static unsigned PY_LONG_LONG toCpp(PyObject* pyobj) + { + return (unsigned PY_LONG_LONG) PyLong_AsUnsignedLongLong(pyobj); + } +}; + +template <typename PyFloatEquiv> +struct Converter_PyFloat +{ + static PyObject* toPython(ValueHolder<PyFloatEquiv> holder) + { + return PyFloat_FromDouble((double) holder.value); + } + static PyFloatEquiv toCpp(PyObject* pyobj) + { + if (PyInt_Check(pyobj)) + return (PyFloatEquiv) PyInt_AS_LONG(pyobj); + return (PyFloatEquiv) PyFloat_AS_DOUBLE(pyobj); + } +}; + +template <> struct Converter<float> : Converter_PyFloat<float> {}; +template <> struct Converter<double> : Converter_PyFloat<double> {}; + +// C Sting Types -------------------------------------------------------------- + +template <> +struct Converter<const char*> +{ + static PyObject* toPython(ValueHolder<const char*> holder) + { + return PyString_FromString(holder.value); + } + static const char* toCpp(PyObject* pyobj) + { + return PyString_AsString(pyobj); + } +}; + +} // namespace Shiboken + +#endif // CONVERSIONS_H + |