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         Partitioning *starts;
  20         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         // Private so RunStyles objects can not be copied
  27         RunStyles(const RunStyles &);
  28 public:
  29         RunStyles();
  30         ~RunStyles();
  31         int Length() const;
  32         int ValueAt(int position) const;
  33         int FindNextChange(int position, int end) const;
  34         int StartRun(int position) const;
  35         int EndRun(int position) const;
  36         // Returns true if some values may have changed
  37         bool FillRange(int &position, int value, int &fillLength);
  38         void SetValueAt(int position, int value);
  39         void InsertSpace(int position, int insertLength);
  40         void DeleteAll();
  41         void DeleteRange(int position, int deleteLength);
  42         int Runs() const;
  43         bool AllSame() const;
  44         bool AllSameAs(int value) const;
  45         int Find(int value, int start) const;
  46
  47         void Check() const;
  48 };
  49
  50 #ifdef SCI_NAMESPACE
  51 }
  52 #endif
  53
  54 #endif