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/*
 *  Precondition.h
 *  ers
 *
 *  Created by Matthias Wiesmann on 08.12.04.
 *  Copyright 2004 CERN. All rights reserved.
 *
 */

#ifndef ERS_PRECONDITION

#include <stdio.h>
#include "ers/Assertion.h"

namespace ers {
    
    class Precondition : public Assertion {
protected:
        virtual std::string build_message(const char* condition_text, const std::string &message, bool constant_expression = false) throw() ; 
        Precondition(const Context &context, severity_t s); 
public:
        static const char* const PRECONDITION_CLASS ; 
        Precondition();
        Precondition(const Context &context, severity_t s, const char*condition, const std::string &message , bool constant_expression=false) ;
        virtual const char*get_class_name() const throw();
    } ;  // Precondition
} // ers


#ifndef N_ERS_ASSERT
#ifdef __GNUC__
#define ERS_PRECONDITION(expr,...) { if(!(expr)) { char precondition_buffer[256] ; snprintf(precondition_buffer,256, __VA_ARGS__) ; ers::Precondition failed_precondition(ERS_HERE,ers::error,#expr,precondition_buffer,__builtin_constant_p(expr)) ; throw failed_precondition ; } }
#else 
#define ERS_PRECONDITION(expr,...) { if(!(expr)) { char precondition_buffer[256] ; snprintf(precondition_buffer,256, __VA_ARGS__) ; ers::Precondition failed_precondition(ERS_HERE,ers::error,#expr,precondition_buffer,false) ; throw failed_precondition ; } }
#endif
#else 
#define ERS_PRECONDITION(expr,...) 
#endif

#endif

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