[boost][range] - fix for ticket 6888 - unique predicate overloads

[SVN r85686]

include/boost/range/algorithm/unique.hpp

@@ -86,14 +86,14 @@ unique( const ForwardRange& rng )
 /// \overload
 template< class ForwardRange, class BinaryPredicate >
 inline BOOST_DEDUCED_TYPENAME range_return<ForwardRange, return_begin_found>::type
-unique( ForwardRange& rng, BinaryPredicate )
+unique( ForwardRange& rng, BinaryPredicate pred )
 {
     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> ));
-    return ::boost::range::unique<return_begin_found>(rng);
+    return ::boost::range::unique<return_begin_found>(rng, pred);
 }
 /// \overload
 template< class ForwardRange, class BinaryPredicate >
-inline BOOST_DEDUCED_TYPENAME range_iterator<const ForwardRange>::type
+inline BOOST_DEDUCED_TYPENAME range_return<const ForwardRange, return_begin_found>::type
 unique( const ForwardRange& rng, BinaryPredicate pred )
 {
     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> ));

include/boost/range/config.hpp

@@ -48,6 +48,12 @@
 #define BOOST_RANGE_ARRAY_REF() (&boost_range_array)
 #endif
 
+#if defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)))
+#  define BOOST_RANGE_UNUSED __attribute__((unused))
+#else
+#  define BOOST_RANGE_UNUSED
+#endif
+
 
 
 #endif

test/adaptor_test/strided.cpp

@@ -13,6 +13,7 @@
 //
 #include <boost/range/adaptor/strided.hpp>
 
+#include <boost/config.hpp>
 #include <boost/test/test_tools.hpp>
 #include <boost/test/unit_test.hpp>
 
@@ -42,9 +43,12 @@ namespace boost
             Container reference;
 
             {
-                typedef BOOST_DEDUCED_TYPENAME Container::const_iterator iterator_t;
+                typedef BOOST_DEDUCED_TYPENAME Container::const_iterator
-                typedef BOOST_DEDUCED_TYPENAME Container::difference_type diff_t;
+                            iterator_t BOOST_RANGE_UNUSED;
-                typedef BOOST_DEDUCED_TYPENAME Container::size_type size_type;
+                typedef BOOST_DEDUCED_TYPENAME Container::difference_type
+                            diff_t BOOST_RANGE_UNUSED;
+                typedef BOOST_DEDUCED_TYPENAME Container::size_type
+                            size_type BOOST_RANGE_UNUSED;
                 iterator_t it = c.begin();
 
                 iterator_t last = c.end();

test/algorithm.cpp

@@ -35,6 +35,7 @@
 #endif
 
 #include <boost/assign.hpp>
+#include <boost/config.hpp>    
 #include <boost/array.hpp>
 #include <boost/bind.hpp>
 #include <boost/range/numeric.hpp>
@@ -107,9 +108,11 @@ void test_random_algorithms(Rng & rng, std::random_access_iterator_tag)
 {
     typedef BOOST_DEDUCED_TYPENAME boost::range_iterator<Rng>::type iterator;
     typedef BOOST_DEDUCED_TYPENAME boost::range_value<Rng>::type value_type;
-    typedef BOOST_DEDUCED_TYPENAME boost::range_size<Rng>::type size_type;
+    typedef BOOST_DEDUCED_TYPENAME boost::range_size<Rng>::type size_type BOOST_RANGE_UNUSED;
     typedef BOOST_DEDUCED_TYPENAME boost::iterator_category<iterator>::type iterator_category;
 
+    
+    
     // just make sure these compile (for now)
     if(0)
     {
@@ -329,6 +332,8 @@ void test_algorithms(Rng & rng)
         o   = boost::adjacent_difference( rng, boost::begin(out), 
                                           null_op2() );
         
+        boost::ignore_unused_variable_warning(b);
+         
     }
 
     // test the algorithms that require a random-access range

test/algorithm_test/unique.cpp

@@ -9,13 +9,15 @@
 // For more information, see http://www.boost.org/libs/range/
 //
 #include <boost/range/algorithm/unique.hpp>
+#include <boost/range/detail/range_return.hpp>
 
 #include <boost/test/test_tools.hpp>
 #include <boost/test/unit_test.hpp>
 
 #include <boost/assign.hpp>
 #include <boost/bind.hpp>
-#include "../test_driver/range_return_test_driver.hpp"
+#include <boost/config.hpp>
+#include "../test_driver/range_overload_test_driver.hpp"
 #include <algorithm>
 #include <functional>
 #include <list>
@@ -60,6 +62,36 @@ namespace boost_range_test_algorithm_unique
             }
         };
 
+        template<typename Container>
+        struct test_range_overload
+        {
+            BOOST_STATIC_CONSTANT(
+                ::boost::range_return_value,
+                result_type = ::boost::return_begin_found);
+                
+            template<typename Policy>
+            BOOST_DEDUCED_TYPENAME boost::range_return<
+                Container, result_type
+            >::type
+            operator()(Policy& policy, Container& cont)
+            {
+                typedef BOOST_DEDUCED_TYPENAME boost::range_return<
+                                Container,result_type>::type result_t;
+                
+                Container cont2(cont);
+                
+                result_t result = boost::unique(cont);
+                
+                boost::unique(boost::make_iterator_range(cont2));
+                
+                BOOST_CHECK_EQUAL_COLLECTIONS(
+                    cont.begin(), cont.end(),
+                    cont2.begin(), cont2.end());
+                
+                return result;
+            }
+        };
+
         template< class Container >
         BOOST_DEDUCED_TYPENAME boost::range_iterator<Container>::type
         reference(Container& cont)
@@ -106,6 +138,34 @@ namespace boost_range_test_algorithm_unique
             }
         };
         
+        template<typename Container>
+        struct test_range_overload
+        {
+            BOOST_STATIC_CONSTANT(
+                ::boost::range_return_value,
+                result_type = ::boost::return_begin_found);
+                
+            template<typename Policy>
+            BOOST_DEDUCED_TYPENAME boost::range_return<Container,result_type>::type
+            operator()(Policy& policy, Container& cont)
+            {
+                typedef BOOST_DEDUCED_TYPENAME boost::range_return<
+                            Container,result_type>::type result_t;
+                
+                Container cont2(cont);
+                
+                result_t result = boost::unique(cont, policy.pred());
+                
+                boost::unique(boost::make_iterator_range(cont2), policy.pred());
+                
+                BOOST_CHECK_EQUAL_COLLECTIONS(
+                    cont.begin(), cont.end(),
+                    cont2.begin(), cont2.end());
+                    
+                return result;
+            }
+        };
+
         template< class Container >
         BOOST_DEDUCED_TYPENAME boost::range_iterator<Container>::type
         reference(Container& cont)
@@ -121,7 +181,7 @@ namespace boost_range_test_algorithm_unique
 
         typedef BOOST_DEDUCED_TYPENAME Container::value_type value_t;
 
-        boost::range_test::range_return_test_driver test_driver;
+        boost::range_test::range_overload_test_driver test_driver;
 
         Container cont;
 
@@ -146,6 +206,19 @@ namespace boost_range_test_algorithm_unique
         test_driver(cont, policy);
     }
     
+    template<typename T>
+    struct equal_div_2
+    {
+        typedef bool result_type;
+        typedef const T& first_argument_type;
+        typedef const T& second_argument_type;
+        
+        bool operator()(const T& left, const T& right) const
+        {
+            return left / 2 == right / 2;
+        }
+    };
+
     template<class Container>
     void test_unique_impl()
     {
@@ -155,14 +228,19 @@ namespace boost_range_test_algorithm_unique
         );
 
         test_unique_impl<Container>(
-            unique_pred_test_policy<std::less<int> >(),
+            unique_pred_test_policy<std::equal_to<int> >(),
             std::less<int>()
         );
 
         test_unique_impl<Container>(
-            unique_pred_test_policy<std::greater<int> >(),
+            unique_pred_test_policy<std::equal_to<int> >(),
             std::greater<int>()
         );
+        
+        test_unique_impl<Container>(
+            unique_pred_test_policy<equal_div_2<int> >(),
+            std::less<int>()
+        );
     }
 
     void test_unique()

test/compile_fail/iterator_range1.cpp

@@ -16,6 +16,7 @@ namespace iterator_range_test_detail
     {
         double source[] = { 0.0, 1.0, 2.0, 3.0, 4.0, 5.0 };        
         boost::iterator_range<float*> rng = boost::make_iterator_range(source);
+        boost::ignore_unused_variable_warning(rng);
     }
 }
 

test/test_driver/range_overload_test_driver.hpp

@@ -0,0 +1,74 @@
+    //  Copyright Neil Groves 2013. Use, modification and 
+    //  distribution is subject to 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) 
+    // 
+    // 
+    // For more information, see http://www.boost.org/libs/range/ 
+    // 
+    // Acknowledgments:
+    // Implemented by Andy in response to Ticket 6888 - unique fix
+    //
+    #ifndef BOOST_RANGE_TEST_TEST_DRIVER_RANGE_OVERLOAD_TEST_DRIVER_HPP_INCLUDED 
+    #define BOOST_RANGE_TEST_TEST_DRIVER_RANGE_OVERLOAD_TEST_DRIVER_HPP_INCLUDED 
+     
+    #include "range_return_test_driver.hpp" 
+    #include <boost/assert.hpp> 
+    #include <boost/test/test_tools.hpp> 
+    #include <boost/test/unit_test.hpp> 
+     
+    namespace boost 
+    { 
+        namespace range_test 
+        { 
+             
+            // A test driver to exercise a test through range_return_test_driver 
+            // plus the overload that determines the return_type by overload 
+            // 
+            // The test driver also contains the code required to check the 
+            // return value correctness. 
+            // 
+            // The TestPolicy needs to implement all those required by  
+            // range_return_test_driver, and additionally 
+            // 
+            // - perform the boost range version of the algorithm that determines 
+            //   the return_type by overload 
+            class range_overload_test_driver : range_return_test_driver 
+            { 
+            public: 
+                template< class Container, 
+                          class TestPolicy > 
+                void operator()(Container& cont, TestPolicy policy) 
+                { 
+                    range_return_test_driver::operator()(cont, policy); 
+                    test_range_overload<Container, TestPolicy>()(cont, policy); 
+                } 
+     
+            private: 
+                template< class Container, class TestPolicy > 
+                struct test_range_overload 
+                { 
+                    void operator()(Container& cont, TestPolicy policy) 
+                    { 
+                        typedef BOOST_DEDUCED_TYPENAME range_iterator<Container>::type iterator_t; 
+                        typedef BOOST_DEDUCED_TYPENAME TestPolicy::template test_range_overload<Container> test_range_overload_t; 
+                        const range_return_value result_type = test_range_overload_t::result_type;  
+                        typedef BOOST_DEDUCED_TYPENAME range_return<Container, result_type>::type range_return_t; 
+     
+                        Container reference(cont); 
+                        Container test_cont(cont); 
+     
+                        test_range_overload_t test_range_overload_fn; 
+                        range_return_t range_result = test_range_overload_fn(policy, test_cont); 
+     
+                        iterator_t reference_it = policy.reference(reference); 
+     
+                        check_results<result_type>::test(test_cont, reference, 
+                                                         range_result, reference_it); 
+                    } 
+                }; 
+            }; 
+        } 
+    } 
+     
+    #endif // include guard