Commainit.h

Go to the documentation of this file.

/*
 * Expression Template Matrix Library
 *
 * Copyright (C) 2004 - 2006 Ricky Lung <mtlung@users.sourceforge.net>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */


#ifdef _MSC_VER
#   pragma once
#   pragma warning( push )
#   pragma warning( disable : 4512 4786 )
#endif  // _MSC_VER

#ifndef _EXMAT_COMMAINIT_H
#define _EXMAT_COMMAINIT_H

namespace exmat {

template<class MAT>
class CommaInitHelper {
    typedef CommaInitHelper<MAT>            self_type;
    typedef typename MAT::const_param_type  const_param_type;
    typedef typename MAT::iterator          iterator;
    typedef typename MAT::ErrChecker        ErrChecker;
public:
    EXMAT_INLINE2 CommaInitHelper(iterator iter, const MAT& mat)
        : m_iter(iter), m_mat(mat) {}
    EXMAT_INLINE2 self_type operator,(const_param_type val) {
//      ErrChecker::Assert
//          (unsigned(m_iter-m_mat.begin()) < unsigned(m_mat.rows()*m_mat.cols()),
//          CommaInitOutOfBoundErrMsg);
        *m_iter = val;
        return self_type(++m_iter, m_mat);
    }
private:
    CommaInitHelper();
protected:
    iterator m_iter;
    const MAT& m_mat;
};


template<class MAT>
class CommaInitializer {
    typedef typename MAT::value_type        value_type;
    typedef typename MAT::const_param_type  const_param_type;
    typedef typename MAT::iterator          iterator;
    typedef typename MAT::ErrChecker        ErrChecker;

public:
    EXMAT_INLINE2 CommaInitializer(MAT& mat, const_param_type val)
        : m_mat(mat), m_val(val), m_wipeOnDestruct(true)
    {}

    EXMAT_INLINE2 ~CommaInitializer() {
        if(m_wipeOnDestruct)
            m_mat.ScalarInit(m_val);
    }

    EXMAT_INLINE2 CommaInitHelper<MAT> operator,(const_param_type val) {
        // !-- May not needed, since it may not be possible to create zero sized container
        ErrChecker::Assert(m_mat.rows() > 0 && m_mat.cols() > 0, "Zero size container being initialized!\n");
        m_wipeOnDestruct = false;
        iterator it1 = m_mat.begin();
        *it1 = m_val;
        *(++it1) = val;
        return CommaInitHelper<MAT>(++it1, m_mat);
    }

private:
    // Disable the default constructor
    CommaInitializer();
protected:
    MAT& m_mat;
    const value_type m_val;
    mutable bool m_wipeOnDestruct;
};

}   // namespace exmat

#if _MSC_VER
#   pragma warning( pop )
#endif  // EXMAT_VC

#endif  // _EXMAT_COMMAINIT_H

---