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// { dg-options "-Wno-deprecated" }
//
// Copyright (C) 2009-2016 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// This is a copy of tr1/6_containers/unordered_set/erase/1.cc, using
// hash_set instead of unordered_set.
#include <hash_set>
#include <string>
#include <testsuite_hooks.h>
namespace __gnu_cxx
{
using std::string;
inline size_t hash_string(const char* s)
{
unsigned long h;
for (h=0; *s; ++s) {
h = 5*h + *s;
}
return size_t(h);
}
template<class T> struct hash<T *>
{
size_t operator()(const T *const & s) const
{ return reinterpret_cast<size_t>(s); }
};
template<> struct hash<string>
{
size_t operator()(const string &s) const { return hash_string(s.c_str()); }
};
template<> struct hash<const string>
{
size_t operator()(const string &s) const { return hash_string(s.c_str()); }
};
}
void test01()
{
bool test __attribute__((unused)) = true;
typedef __gnu_cxx::hash_set<std::string> Set;
typedef Set::iterator iterator;
typedef Set::const_iterator const_iterator;
Set s1;
s1.insert("because to why");
s1.insert("the stockholm syndrome");
s1.insert("a cereous night");
s1.insert("eeilo");
s1.insert("protean");
s1.insert("the way you are when");
s1.insert("tillsammans");
s1.insert("umbra/penumbra");
s1.insert("belonging (no longer mix)");
s1.insert("one line behind");
VERIFY( s1.size() == 10 );
VERIFY( s1.erase("eeilo") == 1 );
VERIFY( s1.size() == 9 );
iterator it1 = s1.find("eeilo");
VERIFY( it1 == s1.end() );
VERIFY( s1.erase("tillsammans") == 1 );
VERIFY( s1.size() == 8 );
iterator it2 = s1.find("tillsammans");
VERIFY( it2 == s1.end() );
// Must work (see DR 526)
iterator it3 = s1.find("belonging (no longer mix)");
VERIFY( it3 != s1.end() );
VERIFY( s1.erase(*it3) == 1 );
VERIFY( s1.size() == 7 );
it3 = s1.find("belonging (no longer mix)");
VERIFY( it3 == s1.end() );
VERIFY( !s1.erase("abra") );
VERIFY( s1.size() == 7 );
VERIFY( !s1.erase("eeilo") );
VERIFY( s1.size() == 7 );
VERIFY( s1.erase("because to why") == 1 );
VERIFY( s1.size() == 6 );
iterator it4 = s1.find("because to why");
VERIFY( it4 == s1.end() );
iterator it5 = s1.find("umbra/penumbra");
iterator it6 = s1.find("one line behind");
VERIFY( it5 != s1.end() );
VERIFY( it6 != s1.end() );
VERIFY( s1.find("the stockholm syndrome") != s1.end() );
VERIFY( s1.find("a cereous night") != s1.end() );
VERIFY( s1.find("the way you are when") != s1.end() );
VERIFY( s1.find("a cereous night") != s1.end() );
VERIFY( s1.erase(*it5) == 1 );
VERIFY( s1.size() == 5 );
it5 = s1.find("umbra/penumbra");
VERIFY( it5 == s1.end() );
VERIFY( s1.erase(*it6) == 1 );
VERIFY( s1.size() == 4 );
it6 = s1.find("one line behind");
VERIFY( it6 == s1.end() );
iterator it7 = s1.begin();
iterator it8 = it7;
++it8;
iterator it9 = it8;
++it9;
VERIFY( s1.erase(*it8) == 1 );
VERIFY( s1.size() == 3 );
VERIFY( ++it7 == it9 );
iterator it10 = it9;
++it10;
iterator it11 = it10;
VERIFY( s1.erase(*it9) == 1 );
VERIFY( s1.size() == 2 );
VERIFY( ++it10 == s1.end() );
s1.erase(s1.begin());
VERIFY( s1.size() == 1 );
VERIFY( s1.begin() == it11 );
VERIFY( s1.erase(*s1.begin()) == 1 );
VERIFY( s1.size() == 0 );
VERIFY( s1.begin() == s1.end() );
}
int main()
{
test01();
return 0;
}
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