hunk.h

   1 #ifndef _HUNK_H_
   2 #define _HUNK_H_
   3
   4 #include <vector>
   5
   6 #include "snippet.h"
   7 #include "utils.h"
   8
   9
  10 /**
  11  * This class describes a hunk of changes from diff.
  12  * Hunk is aggregation of snippets.
  13  */
  14 class Hunk{
  15   private:
  16     std::vector<Snippet *> _snippets;//! list of snippets
  17     int _original_from_line;//! line on which begin changes in original file
  18     int _modified_from_line;//! line on which begin changes in modified file
  19
  20     void _copy(const Hunk &);
  21     void _free();
  22   public:
  23     class iterator; // front declaration
  24
  25     Hunk(const int original_from, const int modified_from) :
  26         _original_from_line(original_from),
  27         _modified_from_line(modified_from){}
  28     Hunk(const Hunk &h){ _copy(h); }
  29     ~Hunk(){ _free(); }
  30
  31     Hunk &operator=(const Hunk &h){ _free(); _copy(h); return *this; }
  32
  33     void addSnippet(Snippet *sn){ _snippets.push_back(sn); }
  34     int numSnippets() const { return _snippets.size(); }
  35
  36     int originalBeginsAt() const { return _original_from_line;}
  37     int modifiedBeginsAt() const { return _modified_from_line;}
  38
  39     iterator begin() const;
  40     iterator end() const;
  41
  42     /**
  43      * Iterator over _snippets.
  44      */
  45     class iterator : public VectorPointerIterator<Snippet>{
  46       public:
  47         friend iterator Hunk::begin() const;
  48         friend iterator Hunk::end() const;
  49     };
  50 };
  51 #endif