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- // This may look like C code, but it is really -*- C++ -*-
- /*
- Copyright (C) 1988 Free Software Foundation
- written by Doug Lea (dl@rocky.oswego.edu)
-
- This file is part of the GNU C++ Library. This library is free
- software; you can redistribute it and/or modify it under the terms of
- the GNU Library General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at your
- option) any later version. This library is distributed in the hope
- that it will be useful, but WITHOUT ANY WARRANTY; without even the
- implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- PURPOSE. See the GNU Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free Software
- Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
- #ifdef __GNUG__
- #pragma implementation
- #endif
- #include <stream.h>
- #include "<T>.VStack.h"
-
- // error handling
-
-
- <T>VStack::<T>VStack(<T>VStack& b)
- :size(b.size), ptr(b.ptr), s(new <T> [b.size])
- {
- for (int i = 0; i < ptr; ++i) s[i] = b.s[i];
- }
-
- void <T>VStack::operator = (<T>VStack& b)
- {
- if (&b == this) return;
- if (size < b.ptr)
- {
- delete [] s;
- s = new <T> [b.size];
- size = b.size;
- }
- ptr = b.ptr;
- for (int i = 0; i < ptr; ++i) s[i] = b.s[i];
- }
-
-
- void <T>VStack::resize(int newsz)
- {
- if (newsz < ptr) error("resize: new size too small");
- <T>* news = new <T> [newsz];
- for (int i = 0; i < ptr; ++i) news[i] = s[i];
- delete [] s;
- s = news;
- size = newsz;
- }
-
- int <T>VStack::OK()
- {
- int v = s != 0; // have space
- v &= size >= 0; // a legal size
- v &= ptr <= size; // ptr within bounds
- v &= ptr >= 0;
- if (!v) error("invariant failure");
- return v;
- }
-