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/*
* This source file is part of libRocket, the HTML/CSS Interface Middleware
*
* For the latest information, see http://www.librocket.com
*
* Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#ifndef ROCKETCOREPYTHONUTILITIES_H
#define ROCKETCOREPYTHONUTILITIES_H
#include "../Variant.h"
#include "Header.h"
#include "Python.h"
namespace Rocket {
namespace Core {
namespace Python {
class ROCKETCOREPYTHON_API Utilities
{
public:
/// Is the specific method name callable
static bool IsCallable(PyObject* self, const char* method_name);
/// Call a python function
/// @param[in] object Python Dictionary or Object
/// @param[in] method_name function or method name to call
/// @param[in] args Tuple of arguments
/// @returns The python result
template <typename R>
static R Call(PyObject* object, const char* method_name, const python::tuple& args)
{
PyObject* result = PythonCall(object, method_name, args);
python::converter::return_from_python<R> converter;
return converter(result);
}
/// Call a python function
/// @param[in] object Python Dictionary or Object to lookup the method in
/// @param[in] method_name function or method name to call
/// @param[in] args Tuple of arguments
/// @returns True on success
static bool Call(PyObject* object, const char* method_name, const python::tuple& args);
/// Creates a boost python object from an existing C++ object pointer
/// @param[in] object The C++ object to convert
/// @returns A boost::python::object referencing the same object
template< typename T >
static inline python::object MakeObject(T* object)
{
// Constructs a boost::object using a result_converter to get a pointer to the existing object
typename python::return_by_value::apply< T* >::type result_converter;
return python::object(python::handle<>(result_converter(object)));
}
/// Creates a new python object (copy) from a C++ object
/// @param[in] object The C++ object to convert
/// @returns A boost::python::object that contains a copy of the object
template< typename T >
static inline python::object MakeObject(const T& object)
{
// Constructs a boost::object copy of the C++ object
return python::object(object);
}
/// Print any pending exceptions to stderr
/// @param[in] clear_error Clear the error flag
static void PrintError(bool clear_error = false);
/// Converts a python object into an Rocket variant.
/// @param[out] variant The variant to convert the object into.
/// @param[in] object The python object to convert.
/// @return True if the conversion was successful, false otherwise.
static bool ConvertToVariant(Variant& variant, PyObject* object);
private:
static PyObject* PythonCall(PyObject* object, const char* method_name, const python::tuple& args );
};
// Template Specialisation for converting from a PyObject*
template<>
inline python::object Utilities::MakeObject< PyObject >(PyObject* object)
{
return python::object(python::handle<>(python::borrowed(object)));
}
}
}
}
#endif
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