85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these librararies and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/* $XConsortium: NCVector.h /main/1 1996/07/29 16:58:13 cde-hp $ */
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// Copyright (c) 1994, 1996 James Clark
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// See the file COPYING for copying permission.
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#ifndef NCVector_INCLUDED
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#define NCVector_INCLUDED 1
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#include <stddef.h>
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#include "xnew.h"
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// This offers a subset of the interface offered by the standard C++
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// vector class as defined in the Jan 96 WP.
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// Code in SP currently assumes that size_type is size_t.
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#ifdef SP_NAMESPACE
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namespace SP_NAMESPACE {
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#endif
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template<class T>
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class NCVector {
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public:
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typedef size_t size_type;
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typedef T *iterator;
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typedef const T *const_iterator;
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NCVector() : ptr_(0), size_(0), alloc_(0) { }
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NCVector(size_t n) : ptr_(0), size_(0), alloc_(0) { append(n); }
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~NCVector();
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void resize(size_t n) {
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if (n < size_)
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erase(ptr_ + n, ptr_ + size_);
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else if (n > size_)
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append(n - size_);
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}
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void swap(NCVector<T> &);
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void clear() { erase(ptr_, ptr_ + size_); }
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size_t size() const { return size_; }
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T &operator[](size_t i) { return ptr_[i]; }
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const T &operator[](size_t i) const { return ptr_[i]; }
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iterator begin() { return ptr_; }
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const_iterator begin() const { return ptr_; }
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T &back() { return ptr_[size_ - 1]; }
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const T &back() const { return ptr_[size_ - 1]; }
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void reserve(size_t n) { if (n > alloc_) reserve1(n); }
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iterator erase(const_iterator, const_iterator);
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private:
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void append(size_t);
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void reserve1(size_t);
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size_t size_;
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T *ptr_;
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size_t alloc_; // allocated size
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};
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#ifdef SP_NAMESPACE
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}
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#endif
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#endif /* not NCVector_INCLUDED */
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#ifdef SP_DEFINE_TEMPLATES
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#include "NCVector.C"
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#endif
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