1 // (C) Copyright Gennadiy Rozental 2001-2015.
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 : BOOST_TEST_FOREACH compile only test
13 // *****************************************************************************
14
15 // STL
16 #include <iostream>
17 #include <list>
18 #include <vector>
19 #include <string>
20
21 #include <boost/test/utils/foreach.hpp>
22
23 #ifdef BOOST_MSVC
24 #pragma warning(disable:4702) // Unreachable code
25 #endif
26
27 template<class T>
baz(std::list<T> const & list_of_T)28 void baz( std::list<T>const& list_of_T )
29 {
30 // an example of using BOOST_TEST_FOREACH with dependent types
31 BOOST_TEST_FOREACH( T const&, t, list_of_T )
32 {
33 std::cout << t << std::endl;
34 }
35 }
36
main()37 int main()
38 {
39 std::list<int> int_list;
40 int_list.push_back( 1 );
41 int_list.push_back( 2 );
42 int_list.push_back( 3 );
43
44 // use BOOST_TEST_FOREACH with a STL container, and a reference as the loop variable.
45 BOOST_TEST_FOREACH( int&, i, int_list )
46 {
47 ++i;
48 std::cout << i << std::endl;
49 }
50
51 std::cout << std::endl;
52
53 // use BOOST_TEST_FOREACH with a std::vector
54 std::vector<int> int_vec;
55 int_vec.push_back( 1 );
56 int_vec.push_back( 2 );
57 int_vec.push_back( 3 );
58 int_vec.push_back( 3 );
59 int_vec.push_back( 3 );
60
61 BOOST_TEST_FOREACH( int const&, i, int_vec )
62 {
63 std::cout << i << std::endl;
64 if( i == 3 )
65 break;
66 }
67
68 std::cout << std::endl;
69
70 // use BOOST_TEST_FOREACH with dependent types
71 baz( int_list );
72 std::cout << std::endl;
73
74 // iterate over characters in a std::string
75 std::string str( "hello" );
76
77 BOOST_TEST_FOREACH( char&, ch, str )
78 {
79 std::cout << ch;
80 // mutate the string
81 ++ch;
82 }
83 std::cout << std::endl;
84 std::cout << std::endl;
85
86 BOOST_TEST_FOREACH( char, ch, str )
87 {
88 // break work as you would expect
89 std::cout << ch;
90 break;
91 }
92 std::cout << std::endl;
93 std::cout << std::endl;
94
95 BOOST_TEST_FOREACH( char, ch, str )
96 {
97 // continue work as you would expect
98 if( ch == 'm' )
99 continue;
100
101 std::cout << ch;
102 }
103 std::cout << std::endl;
104 std::cout << std::endl;
105
106 // use BOOST_TEST_FOREACH with const reference.
107 std::vector<int> const& int_vec_const_ref = int_vec;
108
109 BOOST_TEST_FOREACH( int const&, i, int_vec_const_ref )
110 {
111 std::cout << (i+1) << std::endl;
112 }
113 std::cout << std::endl;
114
115 return 0;
116 }
117