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/////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2007-2012
//
// 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)
//
// See http://www.boost.org/libs/intrusive for documentation.
//
/////////////////////////////////////////////////////////////////////////////
//[doc_sg_set_code
#include <boost/intrusive/sg_set.hpp>
#include <vector>
#include <algorithm>
#include <cassert>
using namespace boost::intrusive;
class MyClass : public bs_set_base_hook<>
{
int int_;
public:
//This is a member hook
bs_set_member_hook<> member_hook_;
MyClass(int i)
: int_(i)
{}
friend bool operator< (const MyClass &a, const MyClass &b)
{ return a.int_ < b.int_; }
friend bool operator> (const MyClass &a, const MyClass &b)
{ return a.int_ > b.int_; }
friend bool operator== (const MyClass &a, const MyClass &b)
{ return a.int_ == b.int_; }
};
//Define an sg_set using the base hook that will store values in reverse order
//and won't execute floating point operations.
typedef sg_set
< MyClass, compare<std::greater<MyClass> >, floating_point<false> > BaseSet;
//Define an multiset using the member hook
typedef member_hook<MyClass, bs_set_member_hook<>, &MyClass::member_hook_> MemberOption;
typedef sg_multiset< MyClass, MemberOption> MemberMultiset;
int main()
{
typedef std::vector<MyClass>::iterator VectIt;
typedef std::vector<MyClass>::reverse_iterator VectRit;
//Create several MyClass objects, each one with a different value
std::vector<MyClass> values;
for(int i = 0; i < 100; ++i) values.push_back(MyClass(i));
BaseSet baseset;
MemberMultiset membermultiset;
//Now insert them in the reverse order in the base hook sg_set
for(VectIt it(values.begin()), itend(values.end()); it != itend; ++it){
baseset.insert(*it);
membermultiset.insert(*it);
}
//Change balance factor
membermultiset.balance_factor(0.9f);
//Now test sg_sets
{
BaseSet::reverse_iterator rbit(baseset.rbegin()), rbitend(baseset.rend());
MemberMultiset::iterator mit(membermultiset.begin()), mitend(membermultiset.end());
VectIt it(values.begin()), itend(values.end());
//Test the objects inserted in the base hook sg_set
for(; it != itend; ++it, ++rbit)
if(&*rbit != &*it) return 1;
//Test the objects inserted in the member hook sg_set
for(it = values.begin(); it != itend; ++it, ++mit)
if(&*mit != &*it) return 1;
}
return 0;
}
//]
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