gstack.cpp

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00001 // gstack.cpp -- Version 0.1
00002 
00003 #include "gstack.h"
00004 ////////////////////////////////////////////////////////////
00005 // Static members
00006 // ---------------------------------------------------------
00007 // void!
00008 
00009 ////////////////////////////////////////////////////////////
00010 gStorage* gStack::GetCurrent ()
00011 {
00012  gElem* myEndPtr = EndPtr();
00013  if ( myEndPtr==nil ) return nil;
00014  gStorage* pObx = myEndPtr->me;
00015  if ( N()==0 ) return nil;
00016  // To be faster would be 'EndPtr()->me'
00017  ///return GetObjectPtr( n );
00018  ASSERTION(pObx!=nil,"pObx!=nil");
00019  return pObx;
00020 }
00021 bool gStack::Push (gStorage* newObj)
00022 {
00023  ASSERTION(newObj!=nil,"newObj!=nil");
00024  return AppendObject( newObj );
00025 }
00026 
00027 bool gStack::Pop ()
00028 {
00029  unsigned n = N();
00030  if ( n==0 ) return false;
00031  Delete( n, n );
00032  return true;
00033 }
00034 ////////////////////////////////////////////////////////////
00035 

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