errorhandler.hpp

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#ifndef COMPILER_ERRORHANDLER_H_INCLUDED
#define COMPILER_ERRORHANDLER_H_INCLUDED

#include <string>

namespace Compiler
{
    struct TokenLoc;


    class ErrorHandler
    {
            int mWarnings;
            int mErrors;
            int mWarningsMode;
            bool mDowngradeErrors;

        protected:

            enum Type
            {
                WarningMessage, ErrorMessage
            };

        private:

        // mutators

            virtual void report (const std::string& message, const TokenLoc& loc, Type type) = 0;

            virtual void report (const std::string& message, Type type) = 0;

        public:

            ErrorHandler();

            virtual ~ErrorHandler();

            bool isGood() const;

            int countErrors() const;

            int countWarnings() const;

            void warning (const std::string& message, const TokenLoc& loc);

            void error (const std::string& message, const TokenLoc& loc);

            void endOfFile();

            virtual void reset();

            void setWarningsMode (int mode);

            void downgradeErrors (bool downgrade);
    };

    class ErrorDowngrade
    {
            ErrorHandler& mHandler;

            ErrorDowngrade (const ErrorDowngrade&);

            ErrorDowngrade& operator= (const ErrorDowngrade&);

        public:

            ErrorDowngrade (ErrorHandler& handler);

            ~ErrorDowngrade();
    };
}

#endif