thread.h

#ifndef _THREAD_H_
#define _THREAD_H_

#include "visitor_ptr.h"
#include "matchObj.h"
#include "edgeManager.h"
#include "typedef.h"
#include <memory>
#include <vector>
#include <stack>

namespace rgx {

class _NFA_Node;

class _thread {
public:
    _thread(const visitor_ptr<_NFA_Node>&, unsigned int maxCaptureSlot, unsigned int sp, unsigned int edgeInex, matchMode);
    _thread(const visitor_ptr<_NFA_Node>&, unsigned int sp, unsigned int edgeInex, const std::stack<unsigned int>&, std::unique_ptr<matchObj>&&, matchMode);
    _thread(const _thread&);
    _thread(_thread&&);

    unsigned int _sp;                                  //字符串指针SP
    visitor_ptr<_NFA_Node>  _nodePtr;                  //nfa的节点指针，即PC
    unsigned int            _edgeIndex;                //对应节点的edge指针
    std::stack<unsigned int>     _loopTimes;           //记录路径上各个循环的重复次数
    std::unique_ptr<matchObj>    _capture;
	matchMode  _mode;                                  //单行模式还是多行模式
	unsigned int _startPosition;                       //匹配开始位置


    int match(const std::u16string &, std::stack<_thread>&);
    //返回0表示匹配成功, 其他值表示匹配失败
    void transTo(const visitor_ptr<_NFA_Node>&, const std::u16string&, std::stack<_thread>&);
};


}
#endif