lineranges.h

/*
 * lineranges.h
 *
 *  Created on: Sep 17, 2008
 *      Author: Lorenzo Bettini <http://www.lorenzobettini.it>, (C) 2008
 *  Copyright: See COPYING file that comes with this distribution
 */

#ifndef LINERANGES_H_
#define LINERANGES_H_

#include <set>
#include <string>

namespace srchilite {

enum RangeError {
    NO_ERROR = 0, INVALID_RANGE_NUMBER
};

enum RangeResult {
    NOT_IN_RANGE = 0, CONTEXT_RANGE, IN_RANGE
};

class LineRanges {
public:
    LineRanges(unsigned int contextLines = 0);
    ~LineRanges();

    typedef int RangeElemType;
    typedef std::pair<RangeElemType, RangeElemType> RangeType;

    typedef std::set<RangeType> LineRangeSet;

    RangeError addRange(const std::string &range);

    const LineRangeSet &getLineRangeSet() const {
        return lineRangeSet;
    }

    void reset() {
        searchFromTheStart = true;
    }

    RangeResult isInRange(const RangeElemType e);

    void setContextLines(unsigned int context) {
        contextLines = context;
    }

private:
    LineRangeSet lineRangeSet;

    bool searchFromTheStart;

    LineRangeSet::const_iterator currentRange;

    int contextLines;
};

}

#endif /* LINERANGES_H_ */