parser.hpp

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#ifndef COMPILER_PARSER_H_INCLUDED
#define COMPILER_PARSER_H_INCLUDED

#include <string>

namespace Compiler
{
    class Scanner;
    struct TokenLoc;
    class ErrorHandler;
    class Context;


    class Parser
    {
            ErrorHandler& mErrorHandler;
            const Context& mContext;
            bool mOptional;
            bool mEmpty;

        protected:

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

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

            void reportEOF();

            ErrorHandler& getErrorHandler();

            const Context& getContext() const;

            static std::string toLower (const std::string& name);

        public:

            Parser (ErrorHandler& errorHandler, const Context& context);

            virtual ~Parser();

            virtual bool parseInt (int value, const TokenLoc& loc, Scanner& scanner);

            virtual bool parseFloat (float value, const TokenLoc& loc, Scanner& scanner);

            virtual bool parseName (const std::string& name, const TokenLoc& loc,
                Scanner& scanner);

            virtual bool parseKeyword (int keyword, const TokenLoc& loc, Scanner& scanner);

            virtual bool parseSpecial (int code, const TokenLoc& loc, Scanner& scanner);

            virtual bool parseComment (const std::string& comment, const TokenLoc& loc,
                Scanner& scanner);

            virtual void parseEOF (Scanner& scanner);

            virtual void reset();

            void setOptional (bool optional);

            void start();

            bool isEmpty() const;
    };
}

#endif