MNValid.h

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/* Copyright (C) 2000 KOM/Darmstadt University of Technology
 *
 * You are allowed to use all other parts of the code under the following terms:
 *
 * For non-commercial use, code may be used in unmodified form provided
 * that this copyright notice and this permission notice appear in
 * supporting documentation.
 *
 * This software is provided "as is" and without any express or implied
 * warranties, including, without limitation, the implied warranty of
 * fitness for a particular purpose.
 *
 * The code may be subjected to the GNU General Public License, Version 2,
 * and re-distributed under the terms of this license.
 * As a special exception, permission is granted to link this code
 * with the Qt library and distribute executables, as long as you
 * follow the requirements of the GNU GPL in regard to all of the
 * software in the executable aside from Qt.
 *
 * Commercial use other than under the terms of the GNU General Public
 * License is allowed only after express negotiation of conditions
 * with the authors.
 */
#ifndef MN_VALID_H
#define MN_VALID_H

#ifndef NDEBUG

#include <assert.h>
#include <stdio.h>

#define DECLARE_VALID \
private: \
    bool _valid; \
    bool _invalid; \
public: \
    void validate( const char* file, int line ) const { \
        if( !_valid || _invalid ) { \
            fprintf( stderr, "object invalid in %s:%d\n", file, line ); \
        } \
        assert( _valid ); \
        assert( !_invalid ); \
    }

#define MAKE_VALID \
    _valid = true; \
    _invalid = false;

#define MAKE_INVALID \
    _valid = false; \
    _invalid = true;

#define CHECK_VALID \
    validate( __FILE__, __LINE__ );

#define CHECK_VALID_OBJ(a) \
    (a).validate( __FILE__, __LINE__ );

#define TESTDUMP 1

#ifdef TESTDUMP
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>

    static inline void testdumpTrunc( const char* filename )
    {
        int fd = ::open( filename, O_CREAT | O_TRUNC | O_WRONLY, 0666 );
        ::close( fd );
    }

    static inline void testdumpWrite( const char* filename, const char* buf, size_t len )
    {
        size_t sz;
        int fd = ::open( filename, O_APPEND | O_WRONLY );
        sz = ::write( fd, buf, len );
        if( sz != len )
        {
            fprintf( stderr, "tried to %d bytes to testdump, but wrote only %d\n", (int)len, (int)sz );
        }
        ::close( fd );
    }
#else
    static inline void testdumpTrunc( const char* ) { }
    static inline void testdumpWrite( const char*, const char*, size_t ) { }
#endif

#else /* NDEBUG */
#  define DECLARE_VALID
#  define MAKE_VALID
#  define MAKE_INVALID
#  define CHECK_VALID
#  define CHECK_VALID_OBJ(a)
#endif

#endif /* MN_VALID_H */

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