Cleaner external buffer handling in SkWriter32

include/core/SkTDArray.h

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkTDArray_DEFINED
@@ skipping 83 matching lines @@
     }
 
     bool isEmpty() const { return fCount == 0; }
 
     /**
      *  Return the number of elements in the array
      */
     int count() const { return fCount; }
 
     /**
+     *  Return the number of elements there is space for without growing.

[reed1, 2014/02/06 20:14:40]

// This includes however many elements may already have been added

or

// This is the number of remaining "slots" that have been allocated but not
accounted for

or

// reserved() - count() is the number of additional slots that have been
allocated but not "used" yet.

or ?

[iancottrell, 2014/02/06 21:33:06]

Done. Is this better?

[reed1, 2014/02/06 21:41:34]

If I add 3 elements, and call reserve() and it returns 5, can I add 5 more or 2
more without growing?

+     */
+    int reserved() const { return fReserve; }
+
+    /**
      *  return the number of bytes in the array: count * sizeof(T)
      */
     size_t bytes() const { return fCount * sizeof(T); }
 
     T*  begin() { return fArray; }
     const T*  begin() const { return fArray; }
     T*  end() { return fArray ? fArray + fCount : NULL; }
     const T*  end() const { return fArray ? fArray + fCount : NULL; }
 
     T&  operator[](int index) {
@@ skipping 246 matching lines @@
 #ifdef SK_DEBUG
             fData = (ArrayT*)fArray;
 #endif
             fReserve = size;
         }
         fCount += extra;
     }
 };
 
 #endif