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+//
+// (C) Copyright Jeremy Siek 2000.
+// 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)
+//
+// Revision History:
+// 05 May 2001: Workarounds for HP aCC from Thomas Matelich. (Jeremy Siek)
+// 02 April 2001: Removed limits header altogether. (Jeremy Siek)
+// 01 April 2001: Modified to use new <boost/limits.hpp> header. (JMaddock)
+//
+
+// See http://www.boost.org/libs/concept_check for documentation.
+
+#ifndef BOOST_CONCEPT_CHECKS_HPP
+# define BOOST_CONCEPT_CHECKS_HPP
+
+# include <boost/concept/assert.hpp>
+
+# include <boost/iterator.hpp>
+# include <boost/type_traits/conversion_traits.hpp>
+# include <utility>
+# include <boost/type_traits/is_same.hpp>
+# include <boost/type_traits/is_void.hpp>
+# include <boost/mpl/assert.hpp>
+# include <boost/mpl/bool.hpp>
+# include <boost/detail/workaround.hpp>
+# include <boost/detail/iterator.hpp>
+
+# include <boost/concept/usage.hpp>
+# include <boost/concept/detail/concept_def.hpp>
+
+namespace boost
+{
+
+ //
+ // Backward compatibility
+ //
+
+ template <class Model>
+ inline void function_requires(Model* = 0)
+ {
+ BOOST_CONCEPT_ASSERT((Model));
+ }
+ template <class T> inline void ignore_unused_variable_warning(T const&) {}
+
+# define BOOST_CLASS_REQUIRE(type_var, ns, concept) \
+ BOOST_CONCEPT_ASSERT((ns::concept<type_var>))
+
+# define BOOST_CLASS_REQUIRE2(type_var1, type_var2, ns, concept) \
+ BOOST_CONCEPT_ASSERT((ns::concept<type_var1,type_var2>))
+
+# define BOOST_CLASS_REQUIRE3(tv1, tv2, tv3, ns, concept) \
+ BOOST_CONCEPT_ASSERT((ns::concept<tv1,tv2,tv3>))
+
+# define BOOST_CLASS_REQUIRE4(tv1, tv2, tv3, tv4, ns, concept) \
+ BOOST_CONCEPT_ASSERT((ns::concept<tv1,tv2,tv3,tv4>))
+
+
+ //
+ // Begin concept definitions
+ //
+ BOOST_concept(Integer, (T))
+ {
+ BOOST_CONCEPT_USAGE(Integer)
+ {
+ x.error_type_must_be_an_integer_type();
+ }
+ private:
+ T x;
+ };
+
+ template <> struct Integer<signed char> {};
+ template <> struct Integer<unsigned char> {};
+ template <> struct Integer<short> {};
+ template <> struct Integer<unsigned short> {};
+ template <> struct Integer<int> {};
+ template <> struct Integer<unsigned int> {};
+ template <> struct Integer<long> {};
+ template <> struct Integer<unsigned long> {};
+# if defined(BOOST_HAS_LONG_LONG)
+ template <> struct Integer< ::boost::long_long_type> {};
+ template <> struct Integer< ::boost::ulong_long_type> {};
+# elif defined(BOOST_HAS_MS_INT64)
+ template <> struct Integer<__int64> {};
+ template <> struct Integer<unsigned __int64> {};
+# endif
+
+ BOOST_concept(SignedInteger,(T)) {
+ BOOST_CONCEPT_USAGE(SignedInteger) {
+ x.error_type_must_be_a_signed_integer_type();
+ }
+ private:
+ T x;
+ };
+ template <> struct SignedInteger<signed char> { };
+ template <> struct SignedInteger<short> {};
+ template <> struct SignedInteger<int> {};
+ template <> struct SignedInteger<long> {};
+# if defined(BOOST_HAS_LONG_LONG)
+ template <> struct SignedInteger< ::boost::long_long_type> {};
+# elif defined(BOOST_HAS_MS_INT64)
+ template <> struct SignedInteger<__int64> {};
+# endif
+
+ BOOST_concept(UnsignedInteger,(T)) {
+ BOOST_CONCEPT_USAGE(UnsignedInteger) {
+ x.error_type_must_be_an_unsigned_integer_type();
+ }
+ private:
+ T x;
+ };
+
+ template <> struct UnsignedInteger<unsigned char> {};
+ template <> struct UnsignedInteger<unsigned short> {};
+ template <> struct UnsignedInteger<unsigned int> {};
+ template <> struct UnsignedInteger<unsigned long> {};
+# if defined(BOOST_HAS_LONG_LONG)
+ template <> struct UnsignedInteger< ::boost::ulong_long_type> {};
+# elif defined(BOOST_HAS_MS_INT64)
+ template <> struct UnsignedInteger<unsigned __int64> {};
+# endif
+
+ //===========================================================================
+ // Basic Concepts
+
+ BOOST_concept(DefaultConstructible,(TT))
+ {
+ BOOST_CONCEPT_USAGE(DefaultConstructible) {
+ TT a; // require default constructor
+ ignore_unused_variable_warning(a);
+ }
+ };
+
+ BOOST_concept(Assignable,(TT))
+ {
+ BOOST_CONCEPT_USAGE(Assignable) {
+#if !defined(_ITERATOR_) // back_insert_iterator broken for VC++ STL
+ a = a; // require assignment operator
+#endif
+ const_constraints(a);
+ }
+ private:
+ void const_constraints(const TT& b) {
+#if !defined(_ITERATOR_) // back_insert_iterator broken for VC++ STL
+ a = b; // const required for argument to assignment
+#else
+ ignore_unused_variable_warning(b);
+#endif
+ }
+ private:
+ TT a;
+ };
+
+
+ BOOST_concept(CopyConstructible,(TT))
+ {
+ BOOST_CONCEPT_USAGE(CopyConstructible) {
+ TT a(b); // require copy constructor
+ TT* ptr = &a; // require address of operator
+ const_constraints(a);
+ ignore_unused_variable_warning(ptr);
+ }
+ private:
+ void const_constraints(const TT& a) {
+ TT c(a); // require const copy constructor
+ const TT* ptr = &a; // require const address of operator
+ ignore_unused_variable_warning(c);
+ ignore_unused_variable_warning(ptr);
+ }
+ TT b;
+ };
+
+#if (defined _MSC_VER)
+# pragma warning( push )
+# pragma warning( disable : 4510 ) // default constructor could not be generated
+# pragma warning( disable : 4610 ) // object 'class' can never be instantiated - user-defined constructor required
+#endif
+ // The SGI STL version of Assignable requires copy constructor and operator=
+ BOOST_concept(SGIAssignable,(TT))
+ {
+ BOOST_CONCEPT_USAGE(SGIAssignable) {
+ TT b(a);
+#if !defined(_ITERATOR_) // back_insert_iterator broken for VC++ STL
+ a = a; // require assignment operator
+#endif
+ const_constraints(a);
+ ignore_unused_variable_warning(b);
+ }
+ private:
+ void const_constraints(const TT& b) {
+ TT c(b);
+#if !defined(_ITERATOR_) // back_insert_iterator broken for VC++ STL
+ a = b; // const required for argument to assignment
+#endif
+ ignore_unused_variable_warning(c);
+ }
+ TT a;
+ };
+#if (defined _MSC_VER)
+# pragma warning( pop )
+#endif
+
+ BOOST_concept(Convertible,(X)(Y))
+ {
+ BOOST_CONCEPT_USAGE(Convertible) {
+ Y y = x;
+ ignore_unused_variable_warning(y);
+ }
+ private:
+ X x;
+ };
+
+ // The C++ standard requirements for many concepts talk about return
+ // types that must be "convertible to bool". The problem with this
+ // requirement is that it leaves the door open for evil proxies that
+ // define things like operator|| with strange return types. Two
+ // possible solutions are:
+ // 1) require the return type to be exactly bool
+ // 2) stay with convertible to bool, and also
+ // specify stuff about all the logical operators.
+ // For now we just test for convertible to bool.
+ template <class TT>
+ void require_boolean_expr(const TT& t) {
+ bool x = t;
+ ignore_unused_variable_warning(x);
+ }
+
+ BOOST_concept(EqualityComparable,(TT))
+ {
+ BOOST_CONCEPT_USAGE(EqualityComparable) {
+ require_boolean_expr(a == b);
+ require_boolean_expr(a != b);
+ }
+ private:
+ TT a, b;
+ };
+
+ BOOST_concept(LessThanComparable,(TT))
+ {
+ BOOST_CONCEPT_USAGE(LessThanComparable) {
+ require_boolean_expr(a < b);
+ }
+ private:
+ TT a, b;
+ };
+
+ // This is equivalent to SGI STL's LessThanComparable.
+ BOOST_concept(Comparable,(TT))
+ {
+ BOOST_CONCEPT_USAGE(Comparable) {
+ require_boolean_expr(a < b);
+ require_boolean_expr(a > b);
+ require_boolean_expr(a <= b);
+ require_boolean_expr(a >= b);
+ }
+ private:
+ TT a, b;
+ };
+
+#define BOOST_DEFINE_BINARY_PREDICATE_OP_CONSTRAINT(OP,NAME) \
+ BOOST_concept(NAME, (First)(Second)) \
+ { \
+ BOOST_CONCEPT_USAGE(NAME) { (void)constraints_(); } \
+ private: \
+ bool constraints_() { return a OP b; } \
+ First a; \
+ Second b; \
+ }
+
+#define BOOST_DEFINE_BINARY_OPERATOR_CONSTRAINT(OP,NAME) \
+ BOOST_concept(NAME, (Ret)(First)(Second)) \
+ { \
+ BOOST_CONCEPT_USAGE(NAME) { (void)constraints_(); } \
+ private: \
+ Ret constraints_() { return a OP b; } \
+ First a; \
+ Second b; \
+ }
+
+ BOOST_DEFINE_BINARY_PREDICATE_OP_CONSTRAINT(==, EqualOp);
+ BOOST_DEFINE_BINARY_PREDICATE_OP_CONSTRAINT(!=, NotEqualOp);
+ BOOST_DEFINE_BINARY_PREDICATE_OP_CONSTRAINT(<, LessThanOp);
+ BOOST_DEFINE_BINARY_PREDICATE_OP_CONSTRAINT(<=, LessEqualOp);
+ BOOST_DEFINE_BINARY_PREDICATE_OP_CONSTRAINT(>, GreaterThanOp);
+ BOOST_DEFINE_BINARY_PREDICATE_OP_CONSTRAINT(>=, GreaterEqualOp);
+
+ BOOST_DEFINE_BINARY_OPERATOR_CONSTRAINT(+, PlusOp);
+ BOOST_DEFINE_BINARY_OPERATOR_CONSTRAINT(*, TimesOp);
+ BOOST_DEFINE_BINARY_OPERATOR_CONSTRAINT(/, DivideOp);
+ BOOST_DEFINE_BINARY_OPERATOR_CONSTRAINT(-, SubtractOp);
+ BOOST_DEFINE_BINARY_OPERATOR_CONSTRAINT(%, ModOp);
+
+ //===========================================================================
+ // Function Object Concepts
+
+ BOOST_concept(Generator,(Func)(Return))
+ {
+ BOOST_CONCEPT_USAGE(Generator) { test(is_void<Return>()); }
+
+ private:
+ void test(boost::mpl::false_)
+ {
+ // Do we really want a reference here?
+ const Return& r = f();
+ ignore_unused_variable_warning(r);
+ }
+
+ void test(boost::mpl::true_)
+ {
+ f();
+ }
+
+ Func f;
+ };
+
+ BOOST_concept(UnaryFunction,(Func)(Return)(Arg))
+ {
+ BOOST_CONCEPT_USAGE(UnaryFunction) { test(is_void<Return>()); }
+
+ private:
+ void test(boost::mpl::false_)
+ {
+ f(arg); // "priming the pump" this way keeps msvc6 happy (ICE)
+ Return r = f(arg);
+ ignore_unused_variable_warning(r);
+ }
+
+ void test(boost::mpl::true_)
+ {
+ f(arg);
+ }
+
+ Func f;
+ Arg arg;
+ };
+
+ BOOST_concept(BinaryFunction,(Func)(Return)(First)(Second))
+ {
+ BOOST_CONCEPT_USAGE(BinaryFunction) { test(is_void<Return>()); }
+ private:
+ void test(boost::mpl::false_)
+ {
+ f(first,second);
+ Return r = f(first, second); // require operator()
+ (void)r;
+ }
+
+ void test(boost::mpl::true_)
+ {
+ f(first,second);
+ }
+
+ Func f;
+ First first;
+ Second second;
+ };
+
+ BOOST_concept(UnaryPredicate,(Func)(Arg))
+ {
+ BOOST_CONCEPT_USAGE(UnaryPredicate) {
+ require_boolean_expr(f(arg)); // require operator() returning bool
+ }
+ private:
+ Func f;
+ Arg arg;
+ };
+
+ BOOST_concept(BinaryPredicate,(Func)(First)(Second))
+ {
+ BOOST_CONCEPT_USAGE(BinaryPredicate) {
+ require_boolean_expr(f(a, b)); // require operator() returning bool
+ }
+ private:
+ Func f;
+ First a;
+ Second b;
+ };
+
+ // use this when functor is used inside a container class like std::set
+ BOOST_concept(Const_BinaryPredicate,(Func)(First)(Second))
+ : BinaryPredicate<Func, First, Second>
+ {
+ BOOST_CONCEPT_USAGE(Const_BinaryPredicate) {
+ const_constraints(f);
+ }
+ private:
+ void const_constraints(const Func& fun) {
+ // operator() must be a const member function
+ require_boolean_expr(fun(a, b));
+ }
+ Func f;
+ First a;
+ Second b;
+ };
+
+ BOOST_concept(AdaptableGenerator,(Func)(Return))
+ : Generator<Func, typename Func::result_type>
+ {
+ typedef typename Func::result_type result_type;
+
+ BOOST_CONCEPT_USAGE(AdaptableGenerator)
+ {
+ BOOST_CONCEPT_ASSERT((Convertible<result_type, Return>));
+ }
+ };
+
+ BOOST_concept(AdaptableUnaryFunction,(Func)(Return)(Arg))
+ : UnaryFunction<Func, typename Func::result_type, typename Func::argument_type>
+ {
+ typedef typename Func::argument_type argument_type;
+ typedef typename Func::result_type result_type;
+
+ ~AdaptableUnaryFunction()
+ {
+ BOOST_CONCEPT_ASSERT((Convertible<result_type, Return>));
+ BOOST_CONCEPT_ASSERT((Convertible<Arg, argument_type>));
+ }
+ };
+
+ BOOST_concept(AdaptableBinaryFunction,(Func)(Return)(First)(Second))
+ : BinaryFunction<
+ Func
+ , typename Func::result_type
+ , typename Func::first_argument_type
+ , typename Func::second_argument_type
+ >
+ {
+ typedef typename Func::first_argument_type first_argument_type;
+ typedef typename Func::second_argument_type second_argument_type;
+ typedef typename Func::result_type result_type;
+
+ ~AdaptableBinaryFunction()
+ {
+ BOOST_CONCEPT_ASSERT((Convertible<result_type, Return>));
+ BOOST_CONCEPT_ASSERT((Convertible<First, first_argument_type>));
+ BOOST_CONCEPT_ASSERT((Convertible<Second, second_argument_type>));
+ }
+ };
+
+ BOOST_concept(AdaptablePredicate,(Func)(Arg))
+ : UnaryPredicate<Func, Arg>
+ , AdaptableUnaryFunction<Func, bool, Arg>
+ {
+ };
+
+ BOOST_concept(AdaptableBinaryPredicate,(Func)(First)(Second))
+ : BinaryPredicate<Func, First, Second>
+ , AdaptableBinaryFunction<Func, bool, First, Second>
+ {
+ };
+
+ //===========================================================================
+ // Iterator Concepts
+
+ BOOST_concept(InputIterator,(TT))
+ : Assignable<TT>
+ , EqualityComparable<TT>
+ {
+ typedef typename boost::detail::iterator_traits<TT>::value_type value_type;
+ typedef typename boost::detail::iterator_traits<TT>::difference_type difference_type;
+ typedef typename boost::detail::iterator_traits<TT>::reference reference;
+ typedef typename boost::detail::iterator_traits<TT>::pointer pointer;
+ typedef typename boost::detail::iterator_traits<TT>::iterator_category iterator_category;
+
+ BOOST_CONCEPT_USAGE(InputIterator)
+ {
+ BOOST_CONCEPT_ASSERT((SignedInteger<difference_type>));
+ BOOST_CONCEPT_ASSERT((Convertible<iterator_category, std::input_iterator_tag>));
+
+ TT j(i);
+ (void)*i; // require dereference operator
+ ++j; // require preincrement operator
+ i++; // require postincrement operator
+ }
+ private:
+ TT i;
+ };
+
+ BOOST_concept(OutputIterator,(TT)(ValueT))
+ : Assignable<TT>
+ {
+ BOOST_CONCEPT_USAGE(OutputIterator) {
+
+ ++i; // require preincrement operator
+ i++; // require postincrement operator
+ *i++ = t; // require postincrement and assignment
+ }
+ private:
+ TT i, j;
+ ValueT t;
+ };
+
+ BOOST_concept(ForwardIterator,(TT))
+ : InputIterator<TT>
+ {
+ BOOST_CONCEPT_USAGE(ForwardIterator)
+ {
+ BOOST_CONCEPT_ASSERT((Convertible<
+ BOOST_DEDUCED_TYPENAME ForwardIterator::iterator_category
+ , std::forward_iterator_tag
+ >));
+
+ typename InputIterator<TT>::reference r = *i;
+ ignore_unused_variable_warning(r);
+ }
+
+ private:
+ TT i;
+ };
+
+ BOOST_concept(Mutable_ForwardIterator,(TT))
+ : ForwardIterator<TT>
+ {
+ BOOST_CONCEPT_USAGE(Mutable_ForwardIterator) {
+ *i++ = *i; // require postincrement and assignment
+ }
+ private:
+ TT i;
+ };
+
+ BOOST_concept(BidirectionalIterator,(TT))
+ : ForwardIterator<TT>
+ {
+ BOOST_CONCEPT_USAGE(BidirectionalIterator)
+ {
+ BOOST_CONCEPT_ASSERT((Convertible<
+ BOOST_DEDUCED_TYPENAME BidirectionalIterator::iterator_category
+ , std::bidirectional_iterator_tag
+ >));
+
+ --i; // require predecrement operator
+ i--; // require postdecrement operator
+ }
+ private:
+ TT i;
+ };
+
+ BOOST_concept(Mutable_BidirectionalIterator,(TT))
+ : BidirectionalIterator<TT>
+ , Mutable_ForwardIterator<TT>
+ {
+ BOOST_CONCEPT_USAGE(Mutable_BidirectionalIterator)
+ {
+ *i-- = *i; // require postdecrement and assignment
+ }
+ private:
+ TT i;
+ };
+
+ BOOST_concept(RandomAccessIterator,(TT))
+ : BidirectionalIterator<TT>
+ , Comparable<TT>
+ {
+ BOOST_CONCEPT_USAGE(RandomAccessIterator)
+ {
+ BOOST_CONCEPT_ASSERT((Convertible<
+ BOOST_DEDUCED_TYPENAME BidirectionalIterator<TT>::iterator_category
+ , std::random_access_iterator_tag
+ >));
+
+ i += n; // require assignment addition operator
+ i = i + n; i = n + i; // require addition with difference type
+ i -= n; // require assignment subtraction operator
+ i = i - n; // require subtraction with difference type
+ n = i - j; // require difference operator
+ (void)i[n]; // require element access operator
+ }
+
+ private:
+ TT a, b;
+ TT i, j;
+ typename boost::detail::iterator_traits<TT>::difference_type n;
+ };
+
+ BOOST_concept(Mutable_RandomAccessIterator,(TT))
+ : RandomAccessIterator<TT>
+ , Mutable_BidirectionalIterator<TT>
+ {
+ BOOST_CONCEPT_USAGE(Mutable_RandomAccessIterator)
+ {
+ i[n] = *i; // require element access and assignment
+ }
+ private:
+ TT i;
+ typename boost::detail::iterator_traits<TT>::difference_type n;
+ };
+
+ //===========================================================================
+ // Container s
+
+ BOOST_concept(Container,(C))
+ : Assignable<C>
+ {
+ typedef typename C::value_type value_type;
+ typedef typename C::difference_type difference_type;
+ typedef typename C::size_type size_type;
+ typedef typename C::const_reference const_reference;
+ typedef typename C::const_pointer const_pointer;
+ typedef typename C::const_iterator const_iterator;
+
+ BOOST_CONCEPT_USAGE(Container)
+ {
+ BOOST_CONCEPT_ASSERT((InputIterator<const_iterator>));
+ const_constraints(c);
+ }
+
+ private:
+ void const_constraints(const C& cc) {
+ i = cc.begin();
+ i = cc.end();
+ n = cc.size();
+ n = cc.max_size();
+ b = cc.empty();
+ }
+ C c;
+ bool b;
+ const_iterator i;
+ size_type n;
+ };
+
+ BOOST_concept(Mutable_Container,(C))
+ : Container<C>
+ {
+ typedef typename C::reference reference;
+ typedef typename C::iterator iterator;
+ typedef typename C::pointer pointer;
+
+ BOOST_CONCEPT_USAGE(Mutable_Container)
+ {
+ BOOST_CONCEPT_ASSERT((
+ Assignable<typename Mutable_Container::value_type>));
+
+ BOOST_CONCEPT_ASSERT((InputIterator<iterator>));
+
+ i = c.begin();
+ i = c.end();
+ c.swap(c2);
+ }
+
+ private:
+ iterator i;
+ C c, c2;
+ };
+
+ BOOST_concept(ForwardContainer,(C))
+ : Container<C>
+ {
+ BOOST_CONCEPT_USAGE(ForwardContainer)
+ {
+ BOOST_CONCEPT_ASSERT((
+ ForwardIterator<
+ typename ForwardContainer::const_iterator
+ >));
+ }
+ };
+
+ BOOST_concept(Mutable_ForwardContainer,(C))
+ : ForwardContainer<C>
+ , Mutable_Container<C>
+ {
+ BOOST_CONCEPT_USAGE(Mutable_ForwardContainer)
+ {
+ BOOST_CONCEPT_ASSERT((
+ Mutable_ForwardIterator<
+ typename Mutable_ForwardContainer::iterator
+ >));
+ }
+ };
+
+ BOOST_concept(ReversibleContainer,(C))
+ : ForwardContainer<C>
+ {
+ typedef typename
+ C::const_reverse_iterator
+ const_reverse_iterator;
+
+ BOOST_CONCEPT_USAGE(ReversibleContainer)
+ {
+ BOOST_CONCEPT_ASSERT((
+ BidirectionalIterator<
+ typename ReversibleContainer::const_iterator>));
+
+ BOOST_CONCEPT_ASSERT((BidirectionalIterator<const_reverse_iterator>));
+
+ const_constraints(c);
+ }
+ private:
+ void const_constraints(const C& cc)
+ {
+ const_reverse_iterator i = cc.rbegin();
+ i = cc.rend();
+ }
+ C c;
+ };
+
+ BOOST_concept(Mutable_ReversibleContainer,(C))
+ : Mutable_ForwardContainer<C>
+ , ReversibleContainer<C>
+ {
+ typedef typename C::reverse_iterator reverse_iterator;
+
+ BOOST_CONCEPT_USAGE(Mutable_ReversibleContainer)
+ {
+ typedef typename Mutable_ForwardContainer<C>::iterator iterator;
+ BOOST_CONCEPT_ASSERT((Mutable_BidirectionalIterator<iterator>));
+ BOOST_CONCEPT_ASSERT((Mutable_BidirectionalIterator<reverse_iterator>));
+
+ reverse_iterator i = c.rbegin();
+ i = c.rend();
+ }
+ private:
+ C c;
+ };
+
+ BOOST_concept(RandomAccessContainer,(C))
+ : ReversibleContainer<C>
+ {
+ typedef typename C::size_type size_type;
+ typedef typename C::const_reference const_reference;
+
+ BOOST_CONCEPT_USAGE(RandomAccessContainer)
+ {
+ BOOST_CONCEPT_ASSERT((
+ RandomAccessIterator<
+ typename RandomAccessContainer::const_iterator
+ >));
+
+ const_constraints(c);
+ }
+ private:
+ void const_constraints(const C& cc)
+ {
+ const_reference r = cc[n];
+ ignore_unused_variable_warning(r);
+ }
+
+ C c;
+ size_type n;
+ };
+
+ BOOST_concept(Mutable_RandomAccessContainer,(C))
+ : Mutable_ReversibleContainer<C>
+ , RandomAccessContainer<C>
+ {
+ private:
+ typedef Mutable_RandomAccessContainer self;
+ public:
+ BOOST_CONCEPT_USAGE(Mutable_RandomAccessContainer)
+ {
+ BOOST_CONCEPT_ASSERT((Mutable_RandomAccessIterator<typename self::iterator>));
+ BOOST_CONCEPT_ASSERT((Mutable_RandomAccessIterator<typename self::reverse_iterator>));
+
+ typename self::reference r = c[i];
+ ignore_unused_variable_warning(r);
+ }
+
+ private:
+ typename Mutable_ReversibleContainer<C>::size_type i;
+ C c;
+ };
+
+ // A Sequence is inherently mutable
+ BOOST_concept(Sequence,(S))
+ : Mutable_ForwardContainer<S>
+ // Matt Austern's book puts DefaultConstructible here, the C++
+ // standard places it in Container --JGS
+ // ... so why aren't we following the standard? --DWA
+ , DefaultConstructible<S>
+ {
+ BOOST_CONCEPT_USAGE(Sequence)
+ {
+ S
+ c(n),
+ c2(n, t),
+ c3(first, last);
+
+ c.insert(p, t);
+ c.insert(p, n, t);
+ c.insert(p, first, last);
+
+ c.erase(p);
+ c.erase(p, q);
+
+ typename Sequence::reference r = c.front();
+
+ ignore_unused_variable_warning(c);
+ ignore_unused_variable_warning(c2);
+ ignore_unused_variable_warning(c3);
+ ignore_unused_variable_warning(r);
+ const_constraints(c);
+ }
+ private:
+ void const_constraints(const S& c) {
+ typename Sequence::const_reference r = c.front();
+ ignore_unused_variable_warning(r);
+ }
+
+ typename S::value_type t;
+ typename S::size_type n;
+ typename S::value_type* first, *last;
+ typename S::iterator p, q;
+ };
+
+ BOOST_concept(FrontInsertionSequence,(S))
+ : Sequence<S>
+ {
+ BOOST_CONCEPT_USAGE(FrontInsertionSequence)
+ {
+ c.push_front(t);
+ c.pop_front();
+ }
+ private:
+ S c;
+ typename S::value_type t;
+ };
+
+ BOOST_concept(BackInsertionSequence,(S))
+ : Sequence<S>
+ {
+ BOOST_CONCEPT_USAGE(BackInsertionSequence)
+ {
+ c.push_back(t);
+ c.pop_back();
+ typename BackInsertionSequence::reference r = c.back();
+ ignore_unused_variable_warning(r);
+ const_constraints(c);
+ }
+ private:
+ void const_constraints(const S& cc) {
+ typename BackInsertionSequence::const_reference
+ r = cc.back();
+ ignore_unused_variable_warning(r);
+ };
+ S c;
+ typename S::value_type t;
+ };
+
+ BOOST_concept(AssociativeContainer,(C))
+ : ForwardContainer<C>
+ , DefaultConstructible<C>
+ {
+ typedef typename C::key_type key_type;
+ typedef typename C::key_compare key_compare;
+ typedef typename C::value_compare value_compare;
+ typedef typename C::iterator iterator;
+
+ BOOST_CONCEPT_USAGE(AssociativeContainer)
+ {
+ i = c.find(k);
+ r = c.equal_range(k);
+ c.erase(k);
+ c.erase(i);
+ c.erase(r.first, r.second);
+ const_constraints(c);
+ BOOST_CONCEPT_ASSERT((BinaryPredicate<key_compare,key_type,key_type>));
+
+ typedef typename AssociativeContainer::value_type value_type_;
+ BOOST_CONCEPT_ASSERT((BinaryPredicate<value_compare,value_type_,value_type_>));
+ }
+
+ // Redundant with the base concept, but it helps below.
+ typedef typename C::const_iterator const_iterator;
+ private:
+ void const_constraints(const C& cc)
+ {
+ ci = cc.find(k);
+ n = cc.count(k);
+ cr = cc.equal_range(k);
+ }
+
+ C c;
+ iterator i;
+ std::pair<iterator,iterator> r;
+ const_iterator ci;
+ std::pair<const_iterator,const_iterator> cr;
+ typename C::key_type k;
+ typename C::size_type n;
+ };
+
+ BOOST_concept(UniqueAssociativeContainer,(C))
+ : AssociativeContainer<C>
+ {
+ BOOST_CONCEPT_USAGE(UniqueAssociativeContainer)
+ {
+ C c(first, last);
+
+ pos_flag = c.insert(t);
+ c.insert(first, last);
+
+ ignore_unused_variable_warning(c);
+ }
+ private:
+ std::pair<typename C::iterator, bool> pos_flag;
+ typename C::value_type t;
+ typename C::value_type* first, *last;
+ };
+
+ BOOST_concept(MultipleAssociativeContainer,(C))
+ : AssociativeContainer<C>
+ {
+ BOOST_CONCEPT_USAGE(MultipleAssociativeContainer)
+ {
+ C c(first, last);
+
+ pos = c.insert(t);
+ c.insert(first, last);
+
+ ignore_unused_variable_warning(c);
+ ignore_unused_variable_warning(pos);
+ }
+ private:
+ typename C::iterator pos;
+ typename C::value_type t;
+ typename C::value_type* first, *last;
+ };
+
+ BOOST_concept(SimpleAssociativeContainer,(C))
+ : AssociativeContainer<C>
+ {
+ BOOST_CONCEPT_USAGE(SimpleAssociativeContainer)
+ {
+ typedef typename C::key_type key_type;
+ typedef typename C::value_type value_type;
+ BOOST_MPL_ASSERT((boost::is_same<key_type,value_type>));
+ }
+ };
+
+ BOOST_concept(PairAssociativeContainer,(C))
+ : AssociativeContainer<C>
+ {
+ BOOST_CONCEPT_USAGE(PairAssociativeContainer)
+ {
+ typedef typename C::key_type key_type;
+ typedef typename C::value_type value_type;
+ typedef typename C::mapped_type mapped_type;
+ typedef std::pair<const key_type, mapped_type> required_value_type;
+ BOOST_MPL_ASSERT((boost::is_same<value_type,required_value_type>));
+ }
+ };
+
+ BOOST_concept(SortedAssociativeContainer,(C))
+ : AssociativeContainer<C>
+ , ReversibleContainer<C>
+ {
+ BOOST_CONCEPT_USAGE(SortedAssociativeContainer)
+ {
+ C
+ c(kc),
+ c2(first, last),
+ c3(first, last, kc);
+
+ p = c.upper_bound(k);
+ p = c.lower_bound(k);
+ r = c.equal_range(k);
+
+ c.insert(p, t);
+
+ ignore_unused_variable_warning(c);
+ ignore_unused_variable_warning(c2);
+ ignore_unused_variable_warning(c3);
+ const_constraints(c);
+ }
+
+ void const_constraints(const C& c)
+ {
+ kc = c.key_comp();
+ vc = c.value_comp();
+
+ cp = c.upper_bound(k);
+ cp = c.lower_bound(k);
+ cr = c.equal_range(k);
+ }
+
+ private:
+ typename C::key_compare kc;
+ typename C::value_compare vc;
+ typename C::value_type t;
+ typename C::key_type k;
+ typedef typename C::iterator iterator;
+ typedef typename C::const_iterator const_iterator;
+
+ typedef SortedAssociativeContainer self;
+ iterator p;
+ const_iterator cp;
+ std::pair<typename self::iterator,typename self::iterator> r;
+ std::pair<typename self::const_iterator,typename self::const_iterator> cr;
+ typename C::value_type* first, *last;
+ };
+
+ // HashedAssociativeContainer
+
+} // namespace boost
+
+# include <boost/concept/detail/concept_undef.hpp>
+
+#endif // BOOST_CONCEPT_CHECKS_HPP
+