457 lines
16 KiB
C++
Executable File
457 lines
16 KiB
C++
Executable File
/* The following code declares class array,
|
|
* an STL container (as wrapper) for arrays of constant size.
|
|
*
|
|
* See
|
|
* http://www.boost.org/libs/array/
|
|
* for documentation.
|
|
*
|
|
* The original author site is at: http://www.josuttis.com/
|
|
*
|
|
* (C) Copyright Nicolai M. Josuttis 2001.
|
|
*
|
|
* Distributed under the Boost Software License, Version 1.0. (See
|
|
* accompanying file LICENSE_1_0.txt or copy at
|
|
* http://www.boost.org/LICENSE_1_0.txt)
|
|
*
|
|
* 9 Jan 2013 - (mtc) Added constexpr
|
|
* 14 Apr 2012 - (mtc) Added support for boost::hash
|
|
* 28 Dec 2010 - (mtc) Added cbegin and cend (and crbegin and crend) for C++Ox compatibility.
|
|
* 10 Mar 2010 - (mtc) fill method added, matching resolution of the standard library working group.
|
|
* See <http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#776> or Trac issue #3168
|
|
* Eventually, we should remove "assign" which is now a synonym for "fill" (Marshall Clow)
|
|
* 10 Mar 2010 - added workaround for SUNCC and !STLPort [trac #3893] (Marshall Clow)
|
|
* 29 Jan 2004 - c_array() added, BOOST_NO_PRIVATE_IN_AGGREGATE removed (Nico Josuttis)
|
|
* 23 Aug 2002 - fix for Non-MSVC compilers combined with MSVC libraries.
|
|
* 05 Aug 2001 - minor update (Nico Josuttis)
|
|
* 20 Jan 2001 - STLport fix (Beman Dawes)
|
|
* 29 Sep 2000 - Initial Revision (Nico Josuttis)
|
|
*
|
|
* Jan 29, 2004
|
|
*/
|
|
#ifndef BOOST_ARRAY_HPP
|
|
#define BOOST_ARRAY_HPP
|
|
|
|
#include <boost/detail/workaround.hpp>
|
|
|
|
#if BOOST_WORKAROUND(BOOST_MSVC, >= 1400)
|
|
# pragma warning(push)
|
|
# pragma warning(disable:4996) // 'std::equal': Function call with parameters that may be unsafe
|
|
# pragma warning(disable:4510) // boost::array<T,N>' : default constructor could not be generated
|
|
# pragma warning(disable:4610) // warning C4610: class 'boost::array<T,N>' can never be instantiated - user defined constructor required
|
|
#endif
|
|
|
|
#include <cstddef>
|
|
#include <iterator>
|
|
#include <stdexcept>
|
|
#include <boost/assert.hpp>
|
|
#include <boost/static_assert.hpp>
|
|
#include <boost/swap.hpp>
|
|
|
|
#include <boost/throw_exception.hpp>
|
|
#include <algorithm>
|
|
|
|
// FIXES for broken compilers
|
|
#include <boost/config.hpp>
|
|
|
|
|
|
namespace boost {
|
|
|
|
template<class T, std::size_t N>
|
|
class array {
|
|
public:
|
|
T elems[N]; // fixed-size array of elements of type T
|
|
|
|
public:
|
|
// type definitions
|
|
typedef T value_type;
|
|
typedef T* iterator;
|
|
typedef const T* const_iterator;
|
|
typedef T& reference;
|
|
typedef const T& const_reference;
|
|
typedef std::size_t size_type;
|
|
typedef std::ptrdiff_t difference_type;
|
|
|
|
// iterator support
|
|
iterator begin() { return elems; }
|
|
const_iterator begin() const { return elems; }
|
|
const_iterator cbegin() const { return elems; }
|
|
|
|
iterator end() { return elems+N; }
|
|
const_iterator end() const { return elems+N; }
|
|
const_iterator cend() const { return elems+N; }
|
|
|
|
// reverse iterator support
|
|
#if !defined(BOOST_MSVC_STD_ITERATOR) && !defined(BOOST_NO_STD_ITERATOR_TRAITS)
|
|
typedef std::reverse_iterator<iterator> reverse_iterator;
|
|
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
|
|
#elif defined(_RWSTD_NO_CLASS_PARTIAL_SPEC)
|
|
typedef std::reverse_iterator<iterator, std::random_access_iterator_tag,
|
|
value_type, reference, iterator, difference_type> reverse_iterator;
|
|
typedef std::reverse_iterator<const_iterator, std::random_access_iterator_tag,
|
|
value_type, const_reference, const_iterator, difference_type> const_reverse_iterator;
|
|
#else
|
|
// workaround for broken reverse_iterator implementations
|
|
typedef std::reverse_iterator<iterator,T> reverse_iterator;
|
|
typedef std::reverse_iterator<const_iterator,T> const_reverse_iterator;
|
|
#endif
|
|
|
|
reverse_iterator rbegin() { return reverse_iterator(end()); }
|
|
const_reverse_iterator rbegin() const {
|
|
return const_reverse_iterator(end());
|
|
}
|
|
const_reverse_iterator crbegin() const {
|
|
return const_reverse_iterator(end());
|
|
}
|
|
|
|
reverse_iterator rend() { return reverse_iterator(begin()); }
|
|
const_reverse_iterator rend() const {
|
|
return const_reverse_iterator(begin());
|
|
}
|
|
const_reverse_iterator crend() const {
|
|
return const_reverse_iterator(begin());
|
|
}
|
|
|
|
// operator[]
|
|
reference operator[](size_type i)
|
|
{
|
|
return BOOST_ASSERT_MSG( i < N, "out of range" ), elems[i];
|
|
}
|
|
|
|
/*BOOST_CONSTEXPR*/ const_reference operator[](size_type i) const
|
|
{
|
|
return BOOST_ASSERT_MSG( i < N, "out of range" ), elems[i];
|
|
}
|
|
|
|
// at() with range check
|
|
reference at(size_type i) { return rangecheck(i), elems[i]; }
|
|
/*BOOST_CONSTEXPR*/ const_reference at(size_type i) const { return rangecheck(i), elems[i]; }
|
|
|
|
// front() and back()
|
|
reference front()
|
|
{
|
|
return elems[0];
|
|
}
|
|
|
|
BOOST_CONSTEXPR const_reference front() const
|
|
{
|
|
return elems[0];
|
|
}
|
|
|
|
reference back()
|
|
{
|
|
return elems[N-1];
|
|
}
|
|
|
|
BOOST_CONSTEXPR const_reference back() const
|
|
{
|
|
return elems[N-1];
|
|
}
|
|
|
|
// size is constant
|
|
static BOOST_CONSTEXPR size_type size() { return N; }
|
|
static BOOST_CONSTEXPR bool empty() { return false; }
|
|
static BOOST_CONSTEXPR size_type max_size() { return N; }
|
|
enum { static_size = N };
|
|
|
|
// swap (note: linear complexity)
|
|
void swap (array<T,N>& y) {
|
|
for (size_type i = 0; i < N; ++i)
|
|
boost::swap(elems[i],y.elems[i]);
|
|
}
|
|
|
|
// direct access to data (read-only)
|
|
const T* data() const { return elems; }
|
|
T* data() { return elems; }
|
|
|
|
// use array as C array (direct read/write access to data)
|
|
T* c_array() { return elems; }
|
|
|
|
// assignment with type conversion
|
|
template <typename T2>
|
|
array<T,N>& operator= (const array<T2,N>& rhs) {
|
|
std::copy(rhs.begin(),rhs.end(), begin());
|
|
return *this;
|
|
}
|
|
|
|
// assign one value to all elements
|
|
void assign (const T& value) { fill ( value ); } // A synonym for fill
|
|
void fill (const T& value)
|
|
{
|
|
std::fill_n(begin(),size(),value);
|
|
}
|
|
|
|
// check range (may be private because it is static)
|
|
static BOOST_CONSTEXPR bool rangecheck (size_type i) {
|
|
return i >= size() ? boost::throw_exception(std::out_of_range ("array<>: index out of range")), true : true;
|
|
}
|
|
|
|
};
|
|
|
|
template< class T >
|
|
class array< T, 0 > {
|
|
|
|
public:
|
|
// type definitions
|
|
typedef T value_type;
|
|
typedef T* iterator;
|
|
typedef const T* const_iterator;
|
|
typedef T& reference;
|
|
typedef const T& const_reference;
|
|
typedef std::size_t size_type;
|
|
typedef std::ptrdiff_t difference_type;
|
|
|
|
// iterator support
|
|
iterator begin() { return iterator( reinterpret_cast< T * >( this ) ); }
|
|
const_iterator begin() const { return const_iterator( reinterpret_cast< const T * >( this ) ); }
|
|
const_iterator cbegin() const { return const_iterator( reinterpret_cast< const T * >( this ) ); }
|
|
|
|
iterator end() { return begin(); }
|
|
const_iterator end() const { return begin(); }
|
|
const_iterator cend() const { return cbegin(); }
|
|
|
|
// reverse iterator support
|
|
#if !defined(BOOST_MSVC_STD_ITERATOR) && !defined(BOOST_NO_STD_ITERATOR_TRAITS)
|
|
typedef std::reverse_iterator<iterator> reverse_iterator;
|
|
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
|
|
#elif defined(_RWSTD_NO_CLASS_PARTIAL_SPEC)
|
|
typedef std::reverse_iterator<iterator, std::random_access_iterator_tag,
|
|
value_type, reference, iterator, difference_type> reverse_iterator;
|
|
typedef std::reverse_iterator<const_iterator, std::random_access_iterator_tag,
|
|
value_type, const_reference, const_iterator, difference_type> const_reverse_iterator;
|
|
#else
|
|
// workaround for broken reverse_iterator implementations
|
|
typedef std::reverse_iterator<iterator,T> reverse_iterator;
|
|
typedef std::reverse_iterator<const_iterator,T> const_reverse_iterator;
|
|
#endif
|
|
|
|
reverse_iterator rbegin() { return reverse_iterator(end()); }
|
|
const_reverse_iterator rbegin() const {
|
|
return const_reverse_iterator(end());
|
|
}
|
|
const_reverse_iterator crbegin() const {
|
|
return const_reverse_iterator(end());
|
|
}
|
|
|
|
reverse_iterator rend() { return reverse_iterator(begin()); }
|
|
const_reverse_iterator rend() const {
|
|
return const_reverse_iterator(begin());
|
|
}
|
|
const_reverse_iterator crend() const {
|
|
return const_reverse_iterator(begin());
|
|
}
|
|
|
|
// operator[]
|
|
reference operator[](size_type /*i*/)
|
|
{
|
|
return failed_rangecheck();
|
|
}
|
|
|
|
/*BOOST_CONSTEXPR*/ const_reference operator[](size_type /*i*/) const
|
|
{
|
|
return failed_rangecheck();
|
|
}
|
|
|
|
// at() with range check
|
|
reference at(size_type /*i*/) { return failed_rangecheck(); }
|
|
/*BOOST_CONSTEXPR*/ const_reference at(size_type /*i*/) const { return failed_rangecheck(); }
|
|
|
|
// front() and back()
|
|
reference front()
|
|
{
|
|
return failed_rangecheck();
|
|
}
|
|
|
|
BOOST_CONSTEXPR const_reference front() const
|
|
{
|
|
return failed_rangecheck();
|
|
}
|
|
|
|
reference back()
|
|
{
|
|
return failed_rangecheck();
|
|
}
|
|
|
|
BOOST_CONSTEXPR const_reference back() const
|
|
{
|
|
return failed_rangecheck();
|
|
}
|
|
|
|
// size is constant
|
|
static BOOST_CONSTEXPR size_type size() { return 0; }
|
|
static BOOST_CONSTEXPR bool empty() { return true; }
|
|
static BOOST_CONSTEXPR size_type max_size() { return 0; }
|
|
enum { static_size = 0 };
|
|
|
|
void swap (array<T,0>& /*y*/) {
|
|
}
|
|
|
|
// direct access to data (read-only)
|
|
const T* data() const { return 0; }
|
|
T* data() { return 0; }
|
|
|
|
// use array as C array (direct read/write access to data)
|
|
T* c_array() { return 0; }
|
|
|
|
// assignment with type conversion
|
|
template <typename T2>
|
|
array<T,0>& operator= (const array<T2,0>& ) {
|
|
return *this;
|
|
}
|
|
|
|
// assign one value to all elements
|
|
void assign (const T& value) { fill ( value ); }
|
|
void fill (const T& ) {}
|
|
|
|
// check range (may be private because it is static)
|
|
static reference failed_rangecheck () {
|
|
std::out_of_range e("attempt to access element of an empty array");
|
|
boost::throw_exception(e);
|
|
#if defined(BOOST_NO_EXCEPTIONS) || (!defined(BOOST_MSVC) && !defined(__PATHSCALE__))
|
|
//
|
|
// We need to return something here to keep
|
|
// some compilers happy: however we will never
|
|
// actually get here....
|
|
//
|
|
static T placeholder;
|
|
return placeholder;
|
|
#endif
|
|
}
|
|
};
|
|
|
|
// comparisons
|
|
template<class T, std::size_t N>
|
|
bool operator== (const array<T,N>& x, const array<T,N>& y) {
|
|
return std::equal(x.begin(), x.end(), y.begin());
|
|
}
|
|
template<class T, std::size_t N>
|
|
bool operator< (const array<T,N>& x, const array<T,N>& y) {
|
|
return std::lexicographical_compare(x.begin(),x.end(),y.begin(),y.end());
|
|
}
|
|
template<class T, std::size_t N>
|
|
bool operator!= (const array<T,N>& x, const array<T,N>& y) {
|
|
return !(x==y);
|
|
}
|
|
template<class T, std::size_t N>
|
|
bool operator> (const array<T,N>& x, const array<T,N>& y) {
|
|
return y<x;
|
|
}
|
|
template<class T, std::size_t N>
|
|
bool operator<= (const array<T,N>& x, const array<T,N>& y) {
|
|
return !(y<x);
|
|
}
|
|
template<class T, std::size_t N>
|
|
bool operator>= (const array<T,N>& x, const array<T,N>& y) {
|
|
return !(x<y);
|
|
}
|
|
|
|
// global swap()
|
|
template<class T, std::size_t N>
|
|
inline void swap (array<T,N>& x, array<T,N>& y) {
|
|
x.swap(y);
|
|
}
|
|
|
|
#if defined(__SUNPRO_CC)
|
|
// Trac ticket #4757; the Sun Solaris compiler can't handle
|
|
// syntax like 'T(&get_c_array(boost::array<T,N>& arg))[N]'
|
|
//
|
|
// We can't just use this for all compilers, because the
|
|
// borland compilers can't handle this form.
|
|
namespace detail {
|
|
template <typename T, std::size_t N> struct c_array
|
|
{
|
|
typedef T type[N];
|
|
};
|
|
}
|
|
|
|
// Specific for boost::array: simply returns its elems data member.
|
|
template <typename T, std::size_t N>
|
|
typename detail::c_array<T,N>::type& get_c_array(boost::array<T,N>& arg)
|
|
{
|
|
return arg.elems;
|
|
}
|
|
|
|
// Specific for boost::array: simply returns its elems data member.
|
|
template <typename T, std::size_t N>
|
|
typename detail::c_array<T,N>::type const& get_c_array(const boost::array<T,N>& arg)
|
|
{
|
|
return arg.elems;
|
|
}
|
|
#else
|
|
// Specific for boost::array: simply returns its elems data member.
|
|
template <typename T, std::size_t N>
|
|
T(&get_c_array(boost::array<T,N>& arg))[N]
|
|
{
|
|
return arg.elems;
|
|
}
|
|
|
|
// Const version.
|
|
template <typename T, std::size_t N>
|
|
const T(&get_c_array(const boost::array<T,N>& arg))[N]
|
|
{
|
|
return arg.elems;
|
|
}
|
|
#endif
|
|
|
|
#if 0
|
|
// Overload for std::array, assuming that std::array will have
|
|
// explicit conversion functions as discussed at the WG21 meeting
|
|
// in Summit, March 2009.
|
|
template <typename T, std::size_t N>
|
|
T(&get_c_array(std::array<T,N>& arg))[N]
|
|
{
|
|
return static_cast<T(&)[N]>(arg);
|
|
}
|
|
|
|
// Const version.
|
|
template <typename T, std::size_t N>
|
|
const T(&get_c_array(const std::array<T,N>& arg))[N]
|
|
{
|
|
return static_cast<T(&)[N]>(arg);
|
|
}
|
|
#endif
|
|
|
|
template <class It> std::size_t hash_range(It, It);
|
|
|
|
template<class T, std::size_t N>
|
|
std::size_t hash_value(const array<T,N>& arr)
|
|
{
|
|
return boost::hash_range(arr.begin(), arr.end());
|
|
}
|
|
|
|
template <size_t Idx, typename T, size_t N>
|
|
T &get(boost::array<T,N> &arr) BOOST_NOEXCEPT {
|
|
BOOST_STATIC_ASSERT_MSG ( Idx < N, "boost::get<>(boost::array &) index out of range" );
|
|
return arr[Idx];
|
|
}
|
|
|
|
template <size_t Idx, typename T, size_t N>
|
|
const T &get(const boost::array<T,N> &arr) BOOST_NOEXCEPT {
|
|
BOOST_STATIC_ASSERT_MSG ( Idx < N, "boost::get<>(const boost::array &) index out of range" );
|
|
return arr[Idx];
|
|
}
|
|
|
|
} /* namespace boost */
|
|
|
|
#ifndef BOOST_NO_CXX11_HDR_ARRAY
|
|
// If we don't have std::array, I'm assuming that we don't have std::get
|
|
namespace std {
|
|
template <size_t Idx, typename T, size_t N>
|
|
T &get(boost::array<T,N> &arr) BOOST_NOEXCEPT {
|
|
BOOST_STATIC_ASSERT_MSG ( Idx < N, "std::get<>(boost::array &) index out of range" );
|
|
return arr[Idx];
|
|
}
|
|
|
|
template <size_t Idx, typename T, size_t N>
|
|
const T &get(const boost::array<T,N> &arr) BOOST_NOEXCEPT {
|
|
BOOST_STATIC_ASSERT_MSG ( Idx < N, "std::get<>(const boost::array &) index out of range" );
|
|
return arr[Idx];
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if BOOST_WORKAROUND(BOOST_MSVC, >= 1400)
|
|
# pragma warning(pop)
|
|
#endif
|
|
|
|
#endif /*BOOST_ARRAY_HPP*/
|