xst_literal_translator.h

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// Common Text Transformation Library
// Copyright (C) 1997-2006 by Igor Kholodov. 
//
// 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.,
// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// mailto:cttl@users.sourceforge.net
// http://sourceforge.net/projects/cttl/

// xst_literal_translator.h

#ifndef _XST_LITERAL_TRANSLATOR_H_INCLUDED_
#define _XST_LITERAL_TRANSLATOR_H_INCLUDED_

#ifdef NDEBUG

#define CTTL_LAMBDA_ASSERT( xexpr ) +const_scalar( 1 )
#define CTTL_LAMBDA_TRACE( xexpr ) +const_scalar( 1 )
#else

#define CTTL_LAMBDA_ASSERT( xexpr )                 \
    (                                                   \
        ( xexpr )                                       \
        ||                                              \
        --(                                             \
            scalar( 0 )                                 \
            ^                                           \
            atoi                                        \
            ^                                           \
            "Assertion failed: " #xexpr                 \
            " in "                                      \
            __FILE__                                    \
            ":"                                         \
            CTTL_QUOTED_EXPRESSION( __LINE__ )          \
        )                                               \
    )

#define CTTL_LAMBDA_TRACE( xmessage ) ( ++( scalar( 0 )^atoi^( xmessage ) ) )

#endif // NDEBUG

namespace cttl_impl {

template< typename CharT >
class xst_literal_translator
{
private:
    CharT const* m_pchar;

public:
    xst_literal_translator( CharT const* pchar_ )
        :
    m_pchar( pchar_ )
    {
    }

    xst_literal_translator( xst_literal_translator< CharT > const& other_ )
        :
    m_pchar( other_.m_pchar )
    {
    }

    CharT const* operator() ( bool CTTL_LAMBDA_ASSERT_ )
    {
        trace_deposit();
        assert( CTTL_LAMBDA_ASSERT_ );
        return m_pchar;
    }

private:
    void trace_deposit()
    {
        CTTL_TRACE_DEPOSIT_TEXT( '\"' );
        CTTL_TRACE_DEPOSIT_MONOSPACE_TEXT( m_pchar );
        CTTL_TRACE_DEPOSIT_TEXT( "\" " );
    }

}; // class xst_literal_translator

}   // namespace cttl_impl


#endif //_XST_LITERAL_TRANSLATOR_H_INCLUDED_

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