Merge pull request #3 from saurabhb17/master

secondary files

1 files changed, 100 insertions, 0 deletions

diff --git a/include/tool/delegate.h b/include/tool/delegate.h
new file mode 100644
index 0000000..a350dec
--- /dev/null
+++ b/include/tool/delegate.h
@@ -0,0 +1,100 @@
+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Copyright (C) 2013 CERN
+ * @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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, you may find one here:
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+ * or you may search the http://www.gnu.org website for the version 2 license,
+ * or you may write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+#ifndef __DELEGATE_H
+#define __DELEGATE_H
+
+
+/**
+ * class DELEGATE
+ * A trivial delegate (pointer to member method of an object) pattern implementation.
+ * Check delegate_example.cpp for a coding sample.
+ */
+
+template <class ReturnType, class Arg>
+class DELEGATE
+{
+public:
+    typedef ReturnType (DELEGATE<ReturnType, Arg>::* MemberPointer)( Arg );
+    typedef ReturnType  _ReturnType;
+    typedef Arg         _ArgType;
+
+    DELEGATE()
+    {
+    }
+
+    template <class T>
+    DELEGATE( T* aObject, ReturnType(T::* aPtr)( Arg ) )
+    {
+        m_ptr = reinterpret_cast<MemberPointer>( aPtr );
+        m_object = reinterpret_cast<void*>( aObject );
+    };
+
+
+    ReturnType operator()( Arg aA ) const
+    {
+        DELEGATE<ReturnType, Arg>* casted = reinterpret_cast<DELEGATE<ReturnType, Arg>*>( m_object );
+        return (casted->*m_ptr)( aA );
+    }
+
+private:
+    MemberPointer m_ptr;
+    void* m_object;
+};
+
+/**
+ * Class DELEGATE0
+ * Same as DELEGATE, but with no arguments.
+ */
+template <class ReturnType>
+class DELEGATE0
+{
+public:
+    typedef ReturnType ( DELEGATE0<ReturnType>::* MemberPointer )();
+    typedef ReturnType _ReturnType;
+
+    DELEGATE0()
+    {
+    }
+
+    template <class T>
+    DELEGATE0( T* aObject, ReturnType(T::* aPtr)() )
+    {
+        m_ptr = reinterpret_cast<MemberPointer>( aPtr );
+        m_object = reinterpret_cast<void*>( aObject );
+    };
+
+
+    ReturnType operator()() const
+    {
+        DELEGATE0<ReturnType>* casted = reinterpret_cast<DELEGATE0<ReturnType>*>( m_object );
+        return ( casted->*m_ptr )();
+    }
+
+private:
+    MemberPointer m_ptr;
+    void* m_object;
+};
+
+#endif