QueryParser.h

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//-*- Mode: C++; c-basic-offset: 8; -*-
#if !defined(__QUERYPARSER_H_)
#define __QUERYPARSER_H_

#include <list>
#include "QueryNode.h"
#include "yyQParser.h"

//#include "yyQLexer.h"
#undef yyFlexLexer
#define yyFlexLexer yyqLexer
#include "FlexLexer.h"


class CQueryParser : public yyqLexer
{
public:
        // current node index to set CQueryTokenNode::m_NodeIndex
        int                                                                     m_CurrentNodeIndex;

        string                                                          m_HitTypeStr;
        int                                                                     m_TextAreaNo;
        vector<CDDCFilterWithBounds>            m_Filters;
        size_t                                                          m_ContextSentencesCount;
        CQueryNode*                                                     m_pQueryTree;   
        const CConcHolder*                                      m_pHolder;
        list<string>                                            m_Labels;
        vector<const CQueryNode*>                       m_CurrSequenceObj;      
        vector<string>                                          m_CurrDistances;
        // if true, DDC shows file names, instead of bibliographical information for this query (CConcIndexator::m_bOutputBibliographyOfHits is default value for outputting bibliography
        bool                                                            m_bEnableBibliographyForThisQuery;
        // if true, DDC initializes CHit::m_DebugRank
        bool                                                            m_bDebugRank;

        BigramDirectionEnum                 m_BigramsUse;


public:
        CQueryParser(const CConcHolder*         pHolder);

        virtual ~CQueryParser();

        void    CleanParser();

        bool ParseQueryOperators (const string& OperatorName, const string& Arguments, CDDCFilterWithBounds& Filter);
        bool ParseSortAndFilterOperators(string& QueryStr);

        //int yylex();

        //virtual int yywrap() { return 1; };

        int yyqlex (void* valp);

        inline const char* yytext(void) const { return YYText(); };
        inline       int   yyleng(void) const { return YYLeng(); };

        void    DeleteTree();

        bool    ParseQuery(const char* query_src);
        bool    Evaluate();
        // return current node index to set CQueryTokenNode::m_NodeIndex
        int             GetNewNodeIndex();
        // return m_CurrentNodeIndex
        size_t  GetNodeIndicesCount() const;
};

#endif