Changeset 2915 in Sophya for trunk/SophyaLib/TArray/utilarr.h

Timestamp:

Feb 22, 2006, 7:17:30 PM (20 years ago)

Author:

ansari

Message:

Amelioration de la classe Range - permettant une valeur symbolique pour specifier le dernier index (last()) - Reza 22/02/2006

File:

• trunk/SophyaLib/TArray/utilarr.h (modified) (2 diffs)

trunk/SophyaLib/TArray/utilarr.h

@@ -128 +128 @@
 class Range {
 public:
-  explicit Range(sa_size_t start=0, sa_size_t end=0, sa_size_t size=1, sa_size_t step=1);
+  //! Index range start \<= index \<= last()
+  Range(sa_size_t start);
+  //! Index range start \<= index \<= end
+  Range(sa_size_t start, sa_size_t end); 
+  //! Index range start \<= index \<= end with increment step 
+  Range(sa_size_t start, sa_size_t end, sa_size_t step);
+  //! General Index range specification, using size or start/end and increment
+  Range(sa_size_t start, sa_size_t end, sa_size_t size, sa_size_t step);
   //! Return the start index
   inline sa_size_t & Start()  {  return start_; }
@@ -137 +144 @@
   //! Return the step
   inline sa_size_t & Step()   {  return step_; }
+  //! return a constant value defining the first element
+  inline static sa_size_t firstIndex() { return 0; }
+  //! return a constant value as a placeholder for the last valid index 
+  inline static sa_size_t lastIndex() { return -1; }
+  //! return a Range object specifing all indices, from first to last
+  inline static Range all() 
+  { return Range(Range::firstIndex() , Range::lastIndex()); }
+  //! return a Range object specifing the first index
+  inline static Range first()
+  { return Range(Range::firstIndex() , Range::lastIndex(), 1, 1); }
+  //! return a Range object specifing the last valid index
+  inline static Range last()
+  { return Range(Range::lastIndex() , Range::lastIndex(), 1, 1); }
+
+  //! For internal TArray module use.
+  void Update(sa_size_t osz);
+
 protected:
   sa_size_t start_; //!< start index