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/* $Id: SafeVector.hh 2641 2007-09-02 21:31:02Z flaterco $
SafeVector equals std::vector except with bounds checking on
operator[].
Copyright (C) 2006 David Flater.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
// Putting the bodies of the methods in a separate file did not work
// with g++ 3.4.6 / GNU ld version 2.15.92.0.2 20040927.
#include <vector>
template <class T> class SafeVector: public std::vector<T> {
public:
// Allow relevant constructors to continue working. (Not sure why
// these definitions are needed here when no definition of the
// default constructor is needed in BetterMap--one of the deep
// mysteries of templates I guess.)
SafeVector (): std::vector<T>() {}
SafeVector (unsigned n): std::vector<T>(n) {}
// Die with assertion failure if index >= size().
T &operator[] (unsigned index) {
assert (index < this->size());
return std::vector<T>::operator[] (index);
}
// Die with assertion failure if index >= size().
const T &operator[] (unsigned index) const {
assert (index < this->size());
return std::vector<T>::operator[] (index);
}
// The at() method throws std::out_of_range if index >= size(). It
// does not appear in the venerable and freely available SGI
// Standard Template Library Programmer's Guide (1994?), but it's
// there in ISO/IEC 14882:1998, supplementing rather than replacing
// the dangerous unchecked operator[].
// IMO there is no good reason for operator[] to be unsafe and thus
// no reason for at(). If you want C, you know where to find it.
};
// Cleanup2006 Done
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