84 lines
2.2 KiB
C++
84 lines
2.2 KiB
C++
/* This file is part of Clementine.
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Copyright 2012, David Sansome <me@davidsansome.com>
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Clementine is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Clementine is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef SIGNALCHECKER_H
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#define SIGNALCHECKER_H
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#include <glib-object.h>
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#include <boost/config.hpp>
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#ifdef BOOST_NO_VARIADIC_TEMPLATES
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template <typename R>
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int GetFunctionParamCount(R (*func)()) {
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return 0;
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}
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template <typename R, typename P0>
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int GetFunctionParamCount(R (*func)(P0)) {
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return 1;
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}
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template <typename R, typename P0, typename P1>
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int GetFunctionParamCount(R (*func)(P0, P1)) {
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return 2;
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}
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template <typename R, typename P0, typename P1, typename P2>
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int GetFunctionParamCount(R (*func)(P0, P1, P2)) {
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return 3;
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}
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#else // BOOST_NO_VARIADIC_TEMPLATES
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template <typename R, typename... Params>
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int GetFunctionParamCount(R (*func)(Params...)) {
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return sizeof...(Params);
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}
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#endif // BOOST_NO_VARIADIC_TEMPLATES
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bool CheckedGConnect(
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gpointer source,
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const char* signal,
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GCallback callback,
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gpointer data,
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const int callback_param_count);
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#ifdef BOOST_NO_VARIADIC_TEMPLATES
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template <typename R, typename P0, typename P1, typename P2>
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bool CheckedGConnect(
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gpointer source, const char* signal, R (*callback)(P0, P1, P2), gpointer data) {
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return CheckedGConnect(
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source, signal, G_CALLBACK(callback), data, GetFunctionParamCount(callback));
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}
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#else
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template <typename R, typename... Params>
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bool CheckedGConnect(
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gpointer source, const char* signal, R (*callback)(Params...), gpointer data) {
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return CheckedGConnect(
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source, signal, G_CALLBACK(callback), data, GetFunctionParamCount(callback));
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}
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#endif // BOOST_NO_VARIADIC_TEMPLATES
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#endif // SIGNALCHECKER_H
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