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src/ell/SC_Listing.cc

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#include "ell/StateCollector.hh"

namespace ell {
    
    SC_Listing::SC_Listing()
      : stateList() 
    {}
    
    SC_Listing::~SC_Listing()
    {
          // delete all collected State objects
        for (   List::iterator it = stateList.begin();
                it != stateList.end(); it++ ) 
        {
            delete *it;
        }
          // clear NULL pointer list
        stateList.clear();
    }

      // This function is used to track all added intermediate States.
      // @param s the added State
    void 
    SC_Listing::add(const State& s) {
          // store a copy of s
        stateList.push_back(s.clone());
    }
    
      // Returns number of added States.
      // @return the number of added states
    size_t 
    SC_Listing::size() const {
        return stateList.size();
    }
     
      // Returns last added State.
      // @return the last added State
    const State* const 
    SC_Listing::getLastAdded() const {
        return *(stateList.rbegin());
    }
    

      // Returns a list of all added States.
      // @return the State list
    const SC_Listing::List&
    SC_Listing::getList() const {
        return stateList;
    }
    

} // namespace ell

namespace ell {
    
    SC_ListingK::SC_ListingK(const size_t length)
      : stateList(length,NULL)
        , curEnd(0)
        , addedTotal(0)
    {
        assertbiu(length > 0, "the minimal list length should be 1");
    }
    
    SC_ListingK::~SC_ListingK()
    {
          // delete all collected State objects
        for (   List::iterator it = stateList.begin();
                it != stateList.end(); it++ ) 
        {
            delete *it;
        }
          // clear NULL pointer list
        stateList.clear();
    }

      // This function is used to track all added intermediate States.
      // @param s the added State
    void 
    SC_ListingK::add(const State& s) {
          // count add
        addedTotal++;
        
          // get index of next position to overwrite
        curEnd = (curEnd+1) % stateList.size();
        
          // store a copy of s
        stateList[curEnd] = s.clone(stateList[curEnd]);
    }
    
      // Returns number of added States.
      // @return the number of added states
    size_t 
    SC_ListingK::size() const {
        return addedTotal;
    }
     
      // Returns last added State.
      // @return the last added State
    const State* const 
    SC_ListingK::getLastAdded() const {
        return stateList[curEnd];
    }

    SC_ListingK::iterator 
    SC_ListingK::getList() const {
        return iterator( (curEnd+1)%stateList.size(), this);
    }

} // namespace ell