119 lines
3.0 KiB
C++
119 lines
3.0 KiB
C++
// (C) Copyright Jeremy Siek 2001.
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_SET_ADAPTOR_HPP
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#define BOOST_SET_ADAPTOR_HPP
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#include <set>
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#include <boost/unordered_set.hpp>
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namespace boost
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{
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template < class K, class C, class A, class T >
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bool set_contains(const std::set< K, C, A >& s, const T& x)
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{
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return s.find(x) != s.end();
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}
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template < class K, class H, class C, class A, class T >
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bool set_contains(const boost::unordered_set< K, H, C, A >& s, const T& x)
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{
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return s.find(x) != s.end();
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}
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template < class K, class C, class A >
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bool set_equal(const std::set< K, C, A >& x, const std::set< K, C, A >& y)
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{
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return x == y;
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}
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// Not the same as lexicographical_compare_3way applied to std::set.
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// this is equivalent semantically to bitset::operator<()
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template < class K, class C, class A >
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int set_lex_order(const std::set< K, C, A >& x, const std::set< K, C, A >& y)
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{
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typename std::set< K, C, A >::iterator xi = x.begin(), yi = y.begin(),
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xend = x.end(), yend = y.end();
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for (; xi != xend && yi != yend; ++xi, ++yi)
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{
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if (*xi < *yi)
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return 1;
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else if (*yi < *xi)
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return -1;
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}
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if (xi == xend)
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return (yi == yend) ? 0 : -1;
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else
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return 1;
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}
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template < class K, class C, class A > void set_clear(std::set< K, C, A >& x)
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{
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x.clear();
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}
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template < class K, class C, class A >
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bool set_empty(const std::set< K, C, A >& x)
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{
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return x.empty();
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}
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template < class K, class C, class A, class T >
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void set_insert(std::set< K, C, A >& x, const T& a)
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{
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x.insert(a);
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}
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template < class K, class C, class A, class T >
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void set_remove(std::set< K, C, A >& x, const T& a)
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{
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x.erase(a);
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}
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template < class K, class C, class A >
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void set_intersect(const std::set< K, C, A >& x, const std::set< K, C, A >& y,
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std::set< K, C, A >& z)
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{
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z.clear();
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std::set_intersection(
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x.begin(), x.end(), y.begin(), y.end(), std::inserter(z));
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}
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template < class K, class C, class A >
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void set_union(const std::set< K, C, A >& x, const std::set< K, C, A >& y,
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std::set< K, C, A >& z)
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{
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z.clear();
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std::set_union(x.begin(), x.end(), y.begin(), y.end(), std::inserter(z));
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}
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template < class K, class C, class A >
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void set_difference(const std::set< K, C, A >& x, const std::set< K, C, A >& y,
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std::set< K, C, A >& z)
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{
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z.clear();
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std::set_difference(
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x.begin(), x.end(), y.begin(), y.end(), std::inserter(z, z.begin()));
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}
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template < class K, class C, class A >
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bool set_subset(const std::set< K, C, A >& x, const std::set< K, C, A >& y)
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{
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return std::includes(x.begin(), x.end(), y.begin(), y.end());
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}
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// Shit, can't implement this without knowing the size of the
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// universe.
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template < class K, class C, class A >
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void set_compliment(const std::set< K, C, A >& /*x*/, std::set< K, C, A >& z)
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{
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z.clear();
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}
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} // namespace boost
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#endif // BOOST_SET_ADAPTOR_HPP
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