ext/scintilla/src/RunStyles.h

   1 /** @file RunStyles.h
   2  ** Data structure used to store sparse styles.
   3  **/
   4 // Copyright 1998-2007 by Neil Hodgson <neilh@scintilla.org>
   5 // The License.txt file describes the conditions under which this software may be distributed.
   6
   7 /// Styling buffer using one element for each run rather than using
   8 /// a filled buffer.
   9
  10 #ifndef RUNSTYLES_H
  11 #define RUNSTYLES_H
  12
  13 #ifdef SCI_NAMESPACE
  14 namespace Scintilla {
  15 #endif
  16
  17 class RunStyles {
  18 private:
  19         std::unique_ptr<Partitioning> starts;
  20         std::unique_ptr<SplitVector<int>> styles;
  21         int RunFromPosition(int position) const;
  22         int SplitRun(int position);
  23         void RemoveRun(int run);
  24         void RemoveRunIfEmpty(int run);
  25         void RemoveRunIfSameAsPrevious(int run);
  26 public:
  27         RunStyles();
  28         // Deleted so RunStyles objects can not be copied.
  29         RunStyles(const RunStyles &) = delete;
  30         void operator=(const RunStyles &) = delete;
  31         ~RunStyles();
  32         int Length() const;
  33         int ValueAt(int position) const;
  34         int FindNextChange(int position, int end) const;
  35         int StartRun(int position) const;
  36         int EndRun(int position) const;
  37         // Returns true if some values may have changed
  38         bool FillRange(int &position, int value, int &fillLength);
  39         void SetValueAt(int position, int value);
  40         void InsertSpace(int position, int insertLength);
  41         void DeleteAll();
  42         void DeleteRange(int position, int deleteLength);
  43         int Runs() const;
  44         bool AllSame() const;
  45         bool AllSameAs(int value) const;
  46         int Find(int value, int start) const;
  47
  48         void Check() const;
  49 };
  50
  51 #ifdef SCI_NAMESPACE
  52 }
  53 #endif
  54
  55 #endif