parser.hpp

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#ifndef CSM_FILTER_PARSER_H
#define CSM_FILTER_PARSER_H

#include <boost/shared_ptr.hpp>

#include "node.hpp"

namespace CSMWorld
{
    class Data;
}

namespace CSMFilter
{
    struct Token;

    class Parser
    {
            boost::shared_ptr<Node> mFilter;
            std::string mInput;
            int mIndex;
            bool mError;
            const CSMWorld::Data& mData;

            Token getStringToken();

            Token getNumberToken();

            Token getNextToken();

            Token checkKeywords (const Token& token);

            boost::shared_ptr<Node> parseImp (bool allowEmpty = false, bool ignoreOneShot = false);

            boost::shared_ptr<Node> parseNAry (const Token& keyword);

            boost::shared_ptr<Node> parseText();

            boost::shared_ptr<Node> parseValue();

            void error();

        public:

            Parser (const CSMWorld::Data& data);

            bool parse (const std::string& filter, bool allowPredefined = true);

            boost::shared_ptr<Node> getFilter() const;
    };
}

#endif