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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@4179 a592a061-630c-0410-9148-cb99ea01b6c8
164 lines
5.5 KiB
C++
164 lines
5.5 KiB
C++
/* The following code declares class array,
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* an STL container (as wrapper) for arrays of constant size.
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*
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* See
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* http://www.josuttis.com/cppcode
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* for details and the latest version.
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*
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* (C) Copyright Nicolai M. Josuttis 2001.
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* Permission to copy, use, modify, sell and distribute this software
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* is granted provided this copyright notice appears in all copies.
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* This software is provided "as is" without express or implied
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* warranty, and with no claim as to its suitability for any purpose.
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*
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* 05 Aug 2001 - minor update (Nico Josuttis)
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* 20 Jan 2001 - STLport fix (Beman Dawes)
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* 29 Sep 2000 - Initial Revision (Nico Josuttis)
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*/
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#ifndef BOOST_ARRAY_HPP
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#define BOOST_ARRAY_HPP
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#include <cstddef>
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#include <stdexcept>
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#include <iterator>
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#include <algorithm>
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// FIXES for broken compilers
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#include <boost/config.hpp>
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namespace boost {
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template<class T, std::size_t N>
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class array {
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public:
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T elems[N]; // fixed-size array of elements of type T
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public:
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// type definitions
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typedef T value_type;
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typedef T* iterator;
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typedef const T* const_iterator;
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typedef T& reference;
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typedef const T& const_reference;
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typedef std::size_t size_type;
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typedef std::ptrdiff_t difference_type;
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// iterator support
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iterator begin() { return elems; }
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const_iterator begin() const { return elems; }
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iterator end() { return elems+N; }
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const_iterator end() const { return elems+N; }
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// reverse iterator support
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#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(BOOST_MSVC_STD_ITERATOR)
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typedef std::reverse_iterator<iterator> reverse_iterator;
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typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
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#elif defined(BOOST_MSVC) && (BOOST_MSVC == 1300)
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// workaround for broken reverse_iterator in VC7
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typedef std::reverse_iterator<std::_Ptrit<value_type, difference_type, iterator,
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reference, iterator, reference> > reverse_iterator;
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typedef std::reverse_iterator<std::_Ptrit<value_type, difference_type, const_iterator,
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const_reference, iterator, reference> > const_reverse_iterator;
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#else
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// workaround for broken reverse_iterator implementations
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typedef std::reverse_iterator<iterator,T> reverse_iterator;
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typedef std::reverse_iterator<const_iterator,T> const_reverse_iterator;
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#endif
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reverse_iterator rbegin() { return reverse_iterator(end()); }
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const_reverse_iterator rbegin() const {
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return const_reverse_iterator(end());
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}
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reverse_iterator rend() { return reverse_iterator(begin()); }
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const_reverse_iterator rend() const {
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return const_reverse_iterator(begin());
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}
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// operator[]
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reference operator[](size_type i) { return elems[i]; }
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const_reference operator[](size_type i) const { return elems[i]; }
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// at() with range check
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reference at(size_type i) { rangecheck(i); return elems[i]; }
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const_reference at(size_type i) const { rangecheck(i); return elems[i]; }
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// front() and back()
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reference front() { return elems[0]; }
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const_reference front() const { return elems[0]; }
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reference back() { return elems[N-1]; }
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const_reference back() const { return elems[N-1]; }
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// size is constant
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static size_type size() { return N; }
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static bool empty() { return false; }
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static size_type max_size() { return N; }
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enum { static_size = N };
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// swap (note: linear complexity)
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void swap (array<T,N>& y) {
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std::swap_ranges(begin(),end(),y.begin());
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}
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// direct access to data
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const T* data() const { return elems; }
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// assignment with type conversion
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template <typename T2>
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array<T,N>& operator= (const array<T2,N>& rhs) {
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std::copy(rhs.begin(),rhs.end(), begin());
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return *this;
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}
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// assign one value to all elements
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void assign (const T& value)
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{
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std::fill_n(begin(),size(),value);
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}
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#ifndef BOOST_NO_PRIVATE_IN_AGGREGATE
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private:
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#endif
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// check range (may be private because it is static)
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static void rangecheck (size_type i) {
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if (i >= size()) { throw std::range_error("array"); }
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}
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};
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// comparisons
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template<class T, std::size_t N>
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bool operator== (const array<T,N>& x, const array<T,N>& y) {
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return std::equal(x.begin(), x.end(), y.begin());
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}
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template<class T, std::size_t N>
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bool operator< (const array<T,N>& x, const array<T,N>& y) {
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return std::lexicographical_compare(x.begin(),x.end(),y.begin(),y.end());
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}
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template<class T, std::size_t N>
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bool operator!= (const array<T,N>& x, const array<T,N>& y) {
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return !(x==y);
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}
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template<class T, std::size_t N>
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bool operator> (const array<T,N>& x, const array<T,N>& y) {
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return y<x;
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}
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template<class T, std::size_t N>
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bool operator<= (const array<T,N>& x, const array<T,N>& y) {
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return !(y<x);
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}
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template<class T, std::size_t N>
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bool operator>= (const array<T,N>& x, const array<T,N>& y) {
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return !(x<y);
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}
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// global swap()
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template<class T, std::size_t N>
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inline void swap (array<T,N>& x, array<T,N>& y) {
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x.swap(y);
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}
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} /* namespace boost */
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#endif /*BOOST_ARRAY_HPP*/
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