1 //  (C) Copyright Gennadiy Rozental 2001-2014.
2 //  Distributed under the Boost Software License, Version 1.0.
3 //  (See accompanying file LICENSE_1_0.txt or copy at
4 //  http://www.boost.org/LICENSE_1_0.txt)
5 
6 //  See http://www.boost.org/libs/test for the library home page.
7 //
8 //  File        : $RCSfile$
9 //
10 //  Version     : $Revision$
11 //
12 //  Description : fixed sized mapping with specified invalid value
13 // ***************************************************************************
14 
15 #ifndef BOOST_TEST_UTILS_FIXED_MAPPING_HPP
16 #define BOOST_TEST_UTILS_FIXED_MAPPING_HPP
17 
18 // Boost
19 #include <boost/preprocessor/repetition/repeat.hpp>
20 #include <boost/preprocessor/arithmetic/add.hpp>
21 #include <boost/call_traits.hpp>
22 #include <boost/detail/binary_search.hpp>
23 
24 // STL
25 #include <vector>
26 #include <functional>
27 #include <algorithm>
28 #include <utility>
29 
30 #include <boost/test/detail/suppress_warnings.hpp>
31 
32 //____________________________________________________________________________//
33 
34 namespace boost {
35 namespace unit_test {
36 
37 // configurable maximum fixed sized mapping size supported by this header.
38 // You can redefine it before inclusion of this file.
39 #ifndef MAX_MAP_SIZE
40 #define MAX_MAP_SIZE 20
41 #endif
42 
43 #define CONSTR_DECL_MID( z, i, dummy1 ) key_param_type key##i, value_param_type v##i,
44 #define CONSTR_BODY_MID( z, i, dummy1 ) add_pair( key##i, v##i );
45 
46 #define CONSTR_DECL( z, n, dummy1 )                                 \
47     fixed_mapping( BOOST_PP_REPEAT_ ## z( n, CONSTR_DECL_MID, "" )  \
48                          value_param_type invalid_value )           \
49     : m_invalid_value( invalid_value )                              \
50     {                                                               \
51         BOOST_PP_REPEAT_ ## z( n, CONSTR_BODY_MID, "" )             \
52         init();                                                     \
53     }                                                               \
54 /**/
55 
56 #define CONTRUCTORS( n ) BOOST_PP_REPEAT( n, CONSTR_DECL, "" )
57 
58 template<typename Key, typename Value, typename Compare = std::less<Key> >
59 class fixed_mapping
60 {
61     typedef std::pair<Key,Value>                            elem_type;
62     typedef std::vector<elem_type>                          map_type;
63     typedef typename std::vector<elem_type>::const_iterator iterator;
64 
65     typedef typename call_traits<Key>::param_type           key_param_type;
66     typedef typename call_traits<Value>::param_type         value_param_type;
67     typedef typename call_traits<Value>::const_reference    value_ref_type;
68 
69 #if BOOST_WORKAROUND(__DECCXX_VER, BOOST_TESTED_AT(60590042))
70     struct p1; friend struct p1;
71     struct p2; friend struct p2;
72 #endif
73 
74     // bind( Compare(), bind(select1st<elem_type>(), _1),  bind(identity<Key>(), _2) )
75     struct p1 : public std::binary_function<elem_type,Key,bool>
76     {
operator ()boost::unit_test::fixed_mapping::p177         bool operator()( elem_type const& x, Key const& y ) const { return Compare()( x.first, y ); }
78     };
79 
80     // bind( Compare(), bind(select1st<elem_type>(), _1), bind(select1st<elem_type>(), _2) )
81     struct p2 : public std::binary_function<elem_type,elem_type,bool>
82     {
operator ()boost::unit_test::fixed_mapping::p283         bool operator()( elem_type const& x, elem_type const& y ) const { return Compare()( x.first, y.first ); }
84     };
85 
86 public:
87     // Constructors
88     CONTRUCTORS( BOOST_PP_ADD( MAX_MAP_SIZE, 1 ) )
89 
90     // key -> value access
operator [](key_param_type key) const91     value_ref_type  operator[]( key_param_type key ) const
92     {
93         iterator it = boost::detail::lower_bound( m_map.begin(), m_map.end(), key, p1() );
94 
95         return (it == m_map.end() || Compare()( key, it->first ) ) ? m_invalid_value : it->second;
96     }
97 
98 private:
99     // Implementation
init()100     void            init()                                                  { std::sort( m_map.begin(), m_map.end(), p2() ); }
add_pair(key_param_type key,value_param_type value)101     void            add_pair( key_param_type key, value_param_type value )  { m_map.push_back( elem_type( key, value ) ); }
102 
103     // Data members
104     Value           m_invalid_value;
105     map_type        m_map;
106 };
107 
108 } // namespace unit_test
109 } // namespace boost
110 
111 #include <boost/test/detail/enable_warnings.hpp>
112 
113 #undef MAX_MAP_SIZE
114 #undef CONSTR_DECL_MID
115 #undef CONSTR_BODY_MID
116 #undef CONSTR_DECL
117 #undef CONTRUCTORS
118 
119 #endif // BOOST_TEST_UTILS_FIXED_MAPPING_HPP
120 
121