forked from boostorg/unordered
Some tests.
[SVN r2892]
This commit is contained in:
Daniel James
245
test/objects/minimal.hpp
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245
test/objects/minimal.hpp
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// Copyright Daniel James 2006. Use, modification, and distribution are
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// subject to the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#if !defined(BOOST_UNORDERED_OBJECTS_MINIMAL_HEADER)
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#define BOOST_UNORDERED_OBJECTS_MINIMAL_HEADER
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#include <cstddef>
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namespace test
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{
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namespace minimal
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{
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class copy_constructible;
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class assignable;
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template <class T> class hash;
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template <class T> class equal_to;
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template <class T> class pointer;
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template <class T> class const_pointer;
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template <class T> class allocator;
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class copy_constructible
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{
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public:
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static copy_constructible create() { return copy_constructible(); }
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copy_constructible(copy_constructible const&) {}
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~copy_constructible() {}
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private:
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copy_constructible& operator=(copy_constructible const&);
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copy_constructible() {}
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};
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class assignable
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{
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public:
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static assignable create() { return assignable(); }
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assignable(assignable const&) {}
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assignable& operator=(assignable const&) { return *this; }
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~assignable() {}
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private:
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assignable() {}
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};
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template <class T>
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class hash
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{
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public:
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static hash create() { return hash(); }
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// TODO: hash has to be default constructible for the default
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// parameters. Maybe use an alternative version for testing
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// other member functions.
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//
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// Or maybe it's required to be default constructible?
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// The Container requirements include a default constructor.
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hash() {}
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hash(hash const&) {}
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// TODO: Required to be assignable?
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hash& operator=(hash const&) { return *this; }
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~hash() {}
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std::size_t operator()(T const& x) const { return 0; }
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};
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template <class T>
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class equal_to
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{
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public:
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static equal_to create() { return equal_to(); }
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// TODO: equal_to has to be default constructible for the default
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// parameters. Maybe use an alternative version for testing
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// other member functions.
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//
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// Or maybe it's required to be default constructible?
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// The Container requirements include a default constructor.
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equal_to() {}
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equal_to(equal_to const&) {}
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// TODO: Required to be assignable?
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equal_to& operator=(equal_to const&) { return *this; }
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~equal_to() {}
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bool operator()(T const& x, T const& y) const { return true; }
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};
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namespace detail
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{
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template <class Ptr, class T>
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class pointer_base
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{
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protected:
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pointer_base() : ptr_(0) {}
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explicit pointer_base(T* ptr) : ptr_(ptr) {}
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~pointer_base() {}
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Ptr& get() { return *static_cast<Ptr*>(this); }
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T* ptr_;
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public:
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typedef void (pointer_base::*bool_type)() const;
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void this_type_does_not_support_comparisons() const {}
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T& operator*() const { return *ptr_; }
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T* operator->() const { return ptr_; }
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Ptr& operator++() { ++ptr_; return get(); }
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Ptr operator++(int) { Ptr tmp(get()); ++ptr_; return tmp; }
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Ptr operator+(int s) const { return Ptr(ptr_ + s); }
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T& operator[](int s) const { return ptr_[s]; }
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operator bool_type() const {
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return ptr_ ?
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&pointer_base::this_type_does_not_support_comparisons
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: 0;
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}
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bool operator!() const { return !ptr_; }
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bool operator==(Ptr const& x) const { return ptr_ == x.ptr_; }
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bool operator!=(Ptr const& x) const { return ptr_ != x.ptr_; }
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bool operator<(Ptr const& x) const { return ptr_ < x.ptr_; }
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bool operator>(Ptr const& x) const { return ptr_ > x.ptr_; }
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bool operator<=(Ptr const& x) const { return ptr_ <= x.ptr_; }
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bool operator>=(Ptr const& x) const { return ptr_ >= x.ptr_; }
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};
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}
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template <class T> class pointer;
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template <class T> class const_pointer;
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template <class T>
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class pointer : public detail::pointer_base<pointer<T>, T>
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{
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friend class allocator<T>;
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friend class detail::pointer_base<pointer<T>, T>;
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friend class const_pointer<T>;
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typedef detail::pointer_base<pointer<T>, T> base;
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pointer(T* ptr) : base(ptr) {}
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public:
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pointer() : base() {}
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bool operator==(pointer const& x) const { return base::operator==(x); }
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bool operator!=(pointer const& x) const { return base::operator!=(x); }
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bool operator<(pointer const& x) const { return base::operator<(x);}
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bool operator>(pointer const& x) const { return base::operator>(x);}
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bool operator<=(pointer const& x) const { return base::operator<=(x);}
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bool operator>=(pointer const& x) const { return base::operator<=(x);}
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bool operator==(const_pointer<T> const& x) const { return x == *this; }
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bool operator!=(const_pointer<T> const& x) const { return x != *this; }
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bool operator<(const_pointer<T> const& x) const { return x > *this; }
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bool operator>(const_pointer<T> const& x) const { return x < *this; }
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bool operator<=(const_pointer<T> const& x) const { return x >= *this; }
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bool operator>=(const_pointer<T> const& x) const { return x <= *this; }
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};
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template <class T>
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class const_pointer : public detail::pointer_base<const_pointer<T>, T const>
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{
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friend class allocator<T>;
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friend class detail::pointer_base<const_pointer<T>, T const>;
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typedef detail::pointer_base<const_pointer<T>, T const> base;
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const_pointer(T* ptr) : base(ptr) {}
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public:
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const_pointer() : base() {}
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const_pointer(pointer<T> const& x) : base(x.ptr_) {}
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bool operator==(const_pointer const& x) const { return base::operator==(x); }
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bool operator!=(const_pointer const& x) const { return base::operator!=(x); }
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bool operator<(const_pointer const& x) const { return base::operator<(x);}
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bool operator>(const_pointer const& x) const { return base::operator>(x);}
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bool operator<=(const_pointer const& x) const { return base::operator<=(x);}
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bool operator>=(const_pointer const& x) const { return base::operator<=(x);}
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bool operator==(pointer<T> const& x) const { return operator==(const_pointer(x)); }
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bool operator!=(pointer<T> const& x) const { return operator!=(const_pointer(x)); }
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bool operator<(pointer<T> const& x) const { return operator<(const_pointer(x));}
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bool operator>(pointer<T> const& x) const { return operator>(const_pointer(x));}
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bool operator<=(pointer<T> const& x) const { return operator<=(const_pointer(x));}
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bool operator>=(pointer<T> const& x) const { return operator<=(const_pointer(x));}
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};
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template <class T>
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class allocator
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{
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public:
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typedef std::size_t size_type;
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typedef std::ptrdiff_t difference_type;
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typedef pointer<T> pointer;
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typedef const_pointer<T> const_pointer;
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typedef T& reference;
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typedef T const& const_reference;
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typedef T value_type;
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template <class U> struct rebind { typedef allocator<U> other; };
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allocator() {}
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allocator(allocator const&) {}
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template <class Y> allocator(allocator<Y> const&) {}
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~allocator() {}
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pointer address(reference r) { return pointer(&r); }
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const_pointer address(const_reference r) { return const_pointer(&r); }
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pointer allocate(size_type n) {
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return pointer(static_cast<T*>(::operator new(n * sizeof(T))));
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}
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pointer allocate(size_type n, const_pointer u)
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{
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return pointer(static_cast<T*>(::operator new(n * sizeof(T))));
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}
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void deallocate(pointer p, size_type n)
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{
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::operator delete((void*) p.ptr_);
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}
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void construct(pointer p, T const& t) { new((void*)p.ptr_) T(t); }
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void destroy(pointer p) { ((T*)p.ptr_)->~T(); }
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size_type max_size() const { return 1000; }
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private:
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allocator& operator=(allocator const&);
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};
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template <class T>
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inline bool operator==(allocator<T> const& x, allocator<T> const& y)
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{
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return true;
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}
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template <class T>
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inline bool operator!=(allocator<T> const& x, allocator<T> const& y)
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{
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return false;
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}
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template <class T>
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void swap(allocator<T>& x, allocator<T>& y)
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{
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}
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}
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}
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#endif
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