exception.hpp

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/*
 * Copyright (c) 2014 Patrick P. Frey
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

#ifndef __TEXTWOLF_EXCEPTION_HPP__
#define __TEXTWOLF_EXCEPTION_HPP__
#include <exception>
#include <stdexcept>

namespace textwolf {

struct throws_exception
{
        enum Cause
        {
                Unknown,                        
                DimOutOfRange,                  
                StateNumbersNotAscending,       
                InvalidParamState,              
                InvalidParamChar,               
                DuplicateStateTransition,       
                InvalidState,                   
                IllegalParam,                   
                IllegalAttributeName,           
                OutOfMem,                       
                ArrayBoundsReadWrite,           
                NotAllowedOperation,            
                FileReadError,                  
                IllegalXmlHeader,               
                InvalidTagOffset,               
                CorruptTagStack,                
                CodePageIndexNotSupported       
        };
};

struct exception        :public std::runtime_error
{
        typedef throws_exception::Cause Cause;
        Cause cause;                                    //< exception cause tag

        exception (Cause p_cause) throw()
                :std::runtime_error("textwolf error in XML"), cause(p_cause) {}
        exception (const exception& orig) throw()
                :std::runtime_error("textwolf error in XML"), cause(orig.cause) {}
        virtual ~exception() throw() {}

        exception& operator= (const exception& orig) throw()
                        {cause=orig.cause; return *this;}

        virtual const char* what() const throw()
        {
                // enumeration of exception causes as strings
                static const char* nameCause[ 17] = {
                        "Unknown","DimOutOfRange","StateNumbersNotAscending","InvalidParamState",
                        "InvalidParamChar","DuplicateStateTransition","InvalidState","IllegalParam",
                        "IllegalAttributeName","OutOfMem","ArrayBoundsReadWrite","NotAllowedOperation"
                        "FileReadError","IllegalXmlHeader","InvalidTagOffset","CorruptTagStack",
                        "CodePageIndexNotSupported"
                };
                return nameCause[ (unsigned int) cause];
        }
};

}//namespace
#endif