UtilsExceptions.h

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#ifndef UTILSEXECPT_H_
#define UTILSEXECPT_H_

#include<string>
#include<stdexcept>
#include<iostream>

// missing message here ?

// can use public virtual std::exception for avoiding diamond problem, read about limitation
// it seems can work only from std::exception (not runtime_exception because no virtual public
class FileError : public std::exception
{
    public:
        // define constructor without argument, maybe copy, assignement is needed
                // should not, by reference always
                /*
        FileError() : std::exception() {
#ifdef DEBUG_EXCEPT
            std::cout << "Constructor FileError without argument" << std::endl;
#endif
        }
        */
        FileError( const std::string& fileIn) : std::exception(), mFile( fileIn ), mFileMsg("") {
#ifdef DEBUG_EXCEPT
            std::cout << "Contructor Base FileError with one argument filename " << std::endl;
#endif
        }
        FileError( const std::string& fileIn, const std::string(msg) ) : std::exception(), mFile( fileIn ),mFileMsg(msg) {}
        // needed with g++ 4.6, no need with 4.7
        // indicates than nothing is throw, normal for destructor, to check !!
        ~FileError() throw() {}
        virtual const char * what() const noexcept {
            return mFileMsg.c_str();
        }
        std::string getFileName() const { return mFile; }
        // maybe getmMsg, but used by polymorphism

    protected:
        std::string mFile, mFileMsg;
};

class FileOpenError : public FileError
{
    public:
        FileOpenError( const std::string& fileNameIn);
};

class FileEmptyError : public FileError
{
    public:
        FileEmptyError( const std::string & fileNameIn );
};

class FileReadError : public FileError
{
    public:
        FileReadError(const std::string& fileNameIn, int lineNumIn = -1 );
        FileReadError(const std::string& fileNameIn, const std::string& msg );
        int getLineNum() { return mLineNum; }

    // specific data member, optional, give the line number
    protected:
        int mLineNum;
};

#endif /* UTILSEXCEPT_H */