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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
commit483eb2f56657e8e7f419ab1a4fab8dce9ade8609 (patch)
treee5d88d25d870d5dedacb6bbdbe2a966086a0a5cf /src/boost/libs/intrusive/example/doc_avl_set.cpp
parentInitial commit. (diff)
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Adding upstream version 14.2.21.upstream/14.2.21upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/boost/libs/intrusive/example/doc_avl_set.cpp')
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diff --git a/src/boost/libs/intrusive/example/doc_avl_set.cpp b/src/boost/libs/intrusive/example/doc_avl_set.cpp
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+/////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2006-2013
+//
+// 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_avl_set_code
+#include <boost/intrusive/avl_set.hpp>
+#include <vector>
+#include <functional>
+#include <cassert>
+
+using namespace boost::intrusive;
+
+ //This is a base hook optimized for size
+class MyClass : public avl_set_base_hook<optimize_size<true> >
+{
+ int int_;
+
+ public:
+ //This is a member hook
+ avl_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 avl_set using the base hook that will store values in reverse order
+typedef avl_set< MyClass, compare<std::greater<MyClass> > > BaseSet;
+
+//Define an multiset using the member hook
+typedef member_hook<MyClass, avl_set_member_hook<>, &MyClass::member_hook_> MemberOption;
+typedef avl_multiset< MyClass, MemberOption> MemberMultiset;
+
+int main()
+{
+ typedef std::vector<MyClass>::iterator VectIt;
+
+ //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;
+
+ //Check that size optimization is activated in the base hook
+ assert(sizeof(avl_set_base_hook<optimize_size<true> >) == 3*sizeof(void*));
+ //Check that size optimization is deactivated in the member hook
+ assert(sizeof(avl_set_member_hook<>) > 3*sizeof(void*));
+
+ //Now insert them in the sets
+ for(VectIt it(values.begin()), itend(values.end()); it != itend; ++it){
+ baseset.insert(*it);
+ membermultiset.insert(*it);
+ }
+
+ //Now test avl_sets
+ {
+ BaseSet::reverse_iterator rbit(baseset.rbegin());
+ MemberMultiset::iterator mit(membermultiset.begin());
+ VectIt it(values.begin()), itend(values.end());
+
+ //Test the objects inserted in the base hook avl_set
+ for(; it != itend; ++it, ++rbit)
+ if(&*rbit != &*it) return 1;
+
+ //Test the objects inserted in the member hook avl_set
+ for(it = values.begin(); it != itend; ++it, ++mit)
+ if(&*mit != &*it) return 1;
+ }
+ return 0;
+}
+//]