forked from boostorg/unordered
293 lines
7.7 KiB
C++
293 lines
7.7 KiB
C++
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// Copyright 2006-2009 Daniel James.
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// Distributed under 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_TEST_OBJECTS_HEADER)
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#define BOOST_UNORDERED_TEST_OBJECTS_HEADER
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#include <boost/config.hpp>
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#include <boost/limits.hpp>
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#include <cstddef>
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#include <iostream>
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#include "../helpers/fwd.hpp"
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#include "../helpers/count.hpp"
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#include "../helpers/memory.hpp"
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#include <map>
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namespace test
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{
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// Note that the default hash function will work for any equal_to (but not
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// very well).
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class object;
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class hash;
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class less;
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class equal_to;
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template <class T> class allocator;
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object generate(object const*);
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class object : globally_counted_object
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{
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friend class hash;
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friend class equal_to;
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friend class less;
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int tag1_, tag2_;
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public:
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explicit object(int t1 = 0, int t2 = 0) : tag1_(t1), tag2_(t2) {}
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~object() {
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tag1_ = -1;
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tag2_ = -1;
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}
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friend bool operator==(object const& x1, object const& x2) {
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return x1.tag1_ == x2.tag1_ && x1.tag2_ == x2.tag2_;
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}
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friend bool operator!=(object const& x1, object const& x2) {
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return x1.tag1_ != x2.tag1_ || x1.tag2_ != x2.tag2_;
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}
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friend bool operator<(object const& x1, object const& x2) {
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return x1.tag1_ < x2.tag1_ ||
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(x1.tag1_ == x2.tag1_ && x1.tag2_ < x2.tag2_);
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}
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friend object generate(object const*) {
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int* x = 0;
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return object(generate(x), generate(x));
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}
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friend std::ostream& operator<<(std::ostream& out, object const& o)
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{
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return out<<"("<<o.tag1_<<","<<o.tag2_<<")";
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}
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};
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class hash
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{
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int type_;
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public:
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explicit hash(int t = 0) : type_(t) {}
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std::size_t operator()(object const& x) const {
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switch(type_) {
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case 1:
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return x.tag1_;
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case 2:
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return x.tag2_;
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default:
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return x.tag1_ + x.tag2_;
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}
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}
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std::size_t operator()(int x) const {
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return x;
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}
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friend bool operator==(hash const& x1, hash const& x2) {
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return x1.type_ == x2.type_;
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}
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friend bool operator!=(hash const& x1, hash const& x2) {
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return x1.type_ != x2.type_;
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}
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};
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class less
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{
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int type_;
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public:
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explicit less(int t = 0) : type_(t) {}
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bool operator()(object const& x1, object const& x2) const {
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switch(type_) {
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case 1:
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return x1.tag1_ < x2.tag1_;
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case 2:
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return x1.tag2_ < x2.tag2_;
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default:
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return x1 < x2;
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}
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}
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std::size_t operator()(int x1, int x2) const {
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return x1 < x2;
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}
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friend bool operator==(less const& x1, less const& x2) {
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return x1.type_ == x2.type_;
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}
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};
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class equal_to
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{
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int type_;
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public:
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explicit equal_to(int t = 0) : type_(t) {}
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bool operator()(object const& x1, object const& x2) const {
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switch(type_) {
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case 1:
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return x1.tag1_ == x2.tag1_;
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case 2:
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return x1.tag2_ == x2.tag2_;
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default:
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return x1 == x2;
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}
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}
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std::size_t operator()(int x1, int x2) const {
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return x1 == x2;
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}
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friend bool operator==(equal_to const& x1, equal_to const& x2) {
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return x1.type_ == x2.type_;
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}
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friend bool operator!=(equal_to const& x1, equal_to const& x2) {
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return x1.type_ != x2.type_;
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}
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friend less create_compare(equal_to x) {
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return less(x.type_);
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}
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};
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namespace detail
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{
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// This won't be a problem as I'm only using a single compile unit
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// in each test (this is actually require by the minimal test
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// framework).
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//
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// boostinspect:nounnamed
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namespace {
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test::detail::memory_tracker<std::allocator<int> > tracker;
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}
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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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# ifdef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
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public:
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# else
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template <class> friend class allocator;
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# endif
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int tag_;
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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 T* pointer;
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typedef T const* 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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explicit allocator(int t = 0) : tag_(t) { detail::tracker.allocator_ref(); }
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template <class Y> allocator(allocator<Y> const& x) : tag_(x.tag_) { detail::tracker.allocator_ref(); }
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allocator(allocator const& x) : tag_(x.tag_) { detail::tracker.allocator_ref(); }
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~allocator() { detail::tracker.allocator_unref(); }
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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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pointer ptr(static_cast<T*>(::operator new(n * sizeof(T))));
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detail::tracker.track_allocate((void*) ptr, n, sizeof(T), tag_);
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return ptr;
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}
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pointer allocate(size_type n, void const* u)
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{
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pointer ptr(static_cast<T*>(::operator new(n * sizeof(T))));
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detail::tracker.track_allocate((void*) ptr, n, sizeof(T), tag_);
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return ptr;
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}
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void deallocate(pointer p, size_type n)
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{
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detail::tracker.track_deallocate((void*) p, n, sizeof(T), tag_);
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::operator delete((void*) p);
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}
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void construct(pointer p, T const& t) {
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detail::tracker.track_construct((void*) p, sizeof(T), tag_);
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new(p) T(t);
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}
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#if defined(BOOST_HAS_RVALUE_REFS) && defined(BOOST_HAS_VARIADIC_TMPL)
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template<class... Args> void construct(pointer p, Args&&... args) {
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detail::tracker.track_construct((void*) p, sizeof(T), tag_);
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new(p) T(std::forward<Args>(args)...);
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}
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#endif
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void destroy(pointer p) {
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detail::tracker.track_destroy((void*) p, sizeof(T), tag_);
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p->~T();
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}
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size_type max_size() const {
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return (std::numeric_limits<size_type>::max)();
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}
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bool operator==(allocator const& x) const
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{
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return tag_ == x.tag_;
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}
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bool operator!=(allocator const& x) const
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{
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return tag_ != x.tag_;
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}
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};
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template <class T>
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bool equivalent_impl(allocator<T> const& x, allocator<T> const& y, test::derived_type) {
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return x == y;
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}
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#if BOOST_WORKAROUND(__GNUC__, < 3)
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void swap(test::object& x, test::object& y) {
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test::object tmp;
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tmp = x;
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x = y;
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y = tmp;
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}
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void swap(test::hash& x, test::hash& y) {
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test::hash tmp;
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tmp = x;
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x = y;
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y = tmp;
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}
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void swap(test::less& x, test::less& y) {
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test::less tmp;
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tmp = x;
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x = y;
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y = tmp;
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}
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void swap(test::equal_to& x, test::equal_to& y) {
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test::equal_to tmp;
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tmp = x;
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x = y;
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y = tmp;
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}
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template <class T>
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void swap(test::allocator<T>& x, test::allocator<T>& y) {
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test::allocator<T> tmp;
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tmp = x;
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x = y;
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y = tmp;
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}
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#endif
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}
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#endif
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