204 lines
5.8 KiB
C++
204 lines
5.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <set>
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// class multiset
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// iterator erase(const_iterator position);
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#include <set>
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#include <cassert>
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#include "min_allocator.h"
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struct TemplateConstructor
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{
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template<typename T>
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TemplateConstructor (const T&) {}
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};
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bool operator<(const TemplateConstructor&, const TemplateConstructor&) { return false; }
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int main()
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{
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{
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typedef std::multiset<int> M;
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typedef int V;
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typedef M::iterator I;
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V ar[] =
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{
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1,
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2,
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3,
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4,
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5,
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6,
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7,
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8
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};
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M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
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assert(m.size() == 8);
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I i = m.erase(next(m.cbegin(), 3));
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assert(m.size() == 7);
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assert(i == next(m.begin(), 3));
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assert(*next(m.begin(), 0) == 1);
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assert(*next(m.begin(), 1) == 2);
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assert(*next(m.begin(), 2) == 3);
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assert(*next(m.begin(), 3) == 5);
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assert(*next(m.begin(), 4) == 6);
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assert(*next(m.begin(), 5) == 7);
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assert(*next(m.begin(), 6) == 8);
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i = m.erase(next(m.cbegin(), 0));
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assert(m.size() == 6);
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assert(i == m.begin());
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assert(*next(m.begin(), 0) == 2);
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assert(*next(m.begin(), 1) == 3);
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assert(*next(m.begin(), 2) == 5);
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assert(*next(m.begin(), 3) == 6);
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assert(*next(m.begin(), 4) == 7);
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assert(*next(m.begin(), 5) == 8);
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i = m.erase(next(m.cbegin(), 5));
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assert(m.size() == 5);
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assert(i == m.end());
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assert(*next(m.begin(), 0) == 2);
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assert(*next(m.begin(), 1) == 3);
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assert(*next(m.begin(), 2) == 5);
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assert(*next(m.begin(), 3) == 6);
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assert(*next(m.begin(), 4) == 7);
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i = m.erase(next(m.cbegin(), 1));
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assert(m.size() == 4);
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assert(i == next(m.begin()));
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assert(*next(m.begin(), 0) == 2);
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assert(*next(m.begin(), 1) == 5);
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assert(*next(m.begin(), 2) == 6);
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assert(*next(m.begin(), 3) == 7);
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i = m.erase(next(m.cbegin(), 2));
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assert(m.size() == 3);
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assert(i == next(m.begin(), 2));
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assert(*next(m.begin(), 0) == 2);
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assert(*next(m.begin(), 1) == 5);
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assert(*next(m.begin(), 2) == 7);
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i = m.erase(next(m.cbegin(), 2));
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assert(m.size() == 2);
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assert(i == next(m.begin(), 2));
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assert(*next(m.begin(), 0) == 2);
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assert(*next(m.begin(), 1) == 5);
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i = m.erase(next(m.cbegin(), 0));
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assert(m.size() == 1);
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assert(i == next(m.begin(), 0));
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assert(*next(m.begin(), 0) == 5);
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i = m.erase(m.cbegin());
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assert(m.size() == 0);
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assert(i == m.begin());
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assert(i == m.end());
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}
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#if TEST_STD_VER >= 11
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{
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typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
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typedef int V;
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typedef M::iterator I;
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V ar[] =
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{
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1,
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2,
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3,
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4,
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5,
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6,
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7,
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8
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};
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M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
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assert(m.size() == 8);
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I i = m.erase(next(m.cbegin(), 3));
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assert(m.size() == 7);
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assert(i == next(m.begin(), 3));
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assert(*next(m.begin(), 0) == 1);
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assert(*next(m.begin(), 1) == 2);
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assert(*next(m.begin(), 2) == 3);
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assert(*next(m.begin(), 3) == 5);
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assert(*next(m.begin(), 4) == 6);
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assert(*next(m.begin(), 5) == 7);
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assert(*next(m.begin(), 6) == 8);
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i = m.erase(next(m.cbegin(), 0));
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assert(m.size() == 6);
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assert(i == m.begin());
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assert(*next(m.begin(), 0) == 2);
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assert(*next(m.begin(), 1) == 3);
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assert(*next(m.begin(), 2) == 5);
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assert(*next(m.begin(), 3) == 6);
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assert(*next(m.begin(), 4) == 7);
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assert(*next(m.begin(), 5) == 8);
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i = m.erase(next(m.cbegin(), 5));
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assert(m.size() == 5);
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assert(i == m.end());
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assert(*next(m.begin(), 0) == 2);
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assert(*next(m.begin(), 1) == 3);
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assert(*next(m.begin(), 2) == 5);
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assert(*next(m.begin(), 3) == 6);
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assert(*next(m.begin(), 4) == 7);
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i = m.erase(next(m.cbegin(), 1));
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assert(m.size() == 4);
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assert(i == next(m.begin()));
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assert(*next(m.begin(), 0) == 2);
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assert(*next(m.begin(), 1) == 5);
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assert(*next(m.begin(), 2) == 6);
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assert(*next(m.begin(), 3) == 7);
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i = m.erase(next(m.cbegin(), 2));
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assert(m.size() == 3);
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assert(i == next(m.begin(), 2));
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assert(*next(m.begin(), 0) == 2);
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assert(*next(m.begin(), 1) == 5);
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assert(*next(m.begin(), 2) == 7);
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i = m.erase(next(m.cbegin(), 2));
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assert(m.size() == 2);
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assert(i == next(m.begin(), 2));
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assert(*next(m.begin(), 0) == 2);
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assert(*next(m.begin(), 1) == 5);
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i = m.erase(next(m.cbegin(), 0));
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assert(m.size() == 1);
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assert(i == next(m.begin(), 0));
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assert(*next(m.begin(), 0) == 5);
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i = m.erase(m.cbegin());
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assert(m.size() == 0);
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assert(i == m.begin());
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assert(i == m.end());
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}
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#endif
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#if TEST_STD_VER >= 14
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{
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// This is LWG #2059
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typedef TemplateConstructor T;
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typedef std::multiset<T> C;
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typedef C::iterator I;
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C c;
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T a{0};
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I it = c.find(a);
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if (it != c.end())
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c.erase(it);
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}
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#endif
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}
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