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/*
 *  Assertion.h
 *  ers
 *
 *  Created by Matthias Wiesmann on 26.11.04.
 *  Copyright 2004 CERN. All rights reserved.
 *
 */

#ifndef ERS_ASSERTION
#define ERS_ASSERTION

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

namespace ers {
    
    class Assertion: public ers::Issue {
protected:
    virtual std::string build_message(const char* condition_text, const std::string &msg, bool constant_expression=false) throw() ; 
    Assertion(const Context &context, severity_t s); 
    void setup(const char *condition, const std::string &message, bool constant_expression); 
    static const char* const MESSAGE_ELEMENTS[] ; 
public:
    static const char* const ASSERT_CONDITION_KEY ;
    static const char* const CLASS_NAME ; 
     
    virtual const char*get_class_name() const throw() ;
    Assertion(); 
    Assertion(const Context &context, severity_t s, const char*condition, const std::string &message,  bool constant_expression=false) ;
} ; 

template <bool> struct Compile_time_error ; 

template<> struct Compile_time_error<true> { };

} // ers 



#ifndef N_ERS_STATIC_ASSERT
#define ERS_STATIC_ASSERT(expr) { ers::Compile_time_error <((expr) != 0)> ERROR_ASSERTION_FAILED ;   (void) ERROR_ASSERTION_FAILED ; }
#else 
#define ERS_STATIC_ASSERT(expr) 
#endif 


#ifndef N_ERS_ASSERT
#ifdef __GNUC__
#define ERS_ASSERT(expr,...) { if(!(expr)) { char assertion_buffer[256] ; snprintf(assertion_buffer,sizeof(assertion_buffer), __VA_ARGS__) ; ers::Assertion failed_assertion(ERS_HERE, ers::error, #expr,assertion_buffer,__builtin_constant_p(expr)) ; throw failed_assertion ; } }
#else 
#define ERS_ASSERT(expr,...) { if(!(expr)) { char assertion_buffer[256] ; snprintf(assertion_buffer,sizeof(assertion_buffer), __VA_ARGS__) ; ers::Assertion failed_assertion(ERS_HERE, ers::error,#expr,assertion_buffer,false) ; throw failed_assertion ; } }
#endif
#else 
#define ERS_ASSERT(expr,...) ((void) (expr))
#endif

#endif

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