1 //////////////////////////////////////////////////////////////////
2 //
3 // lazy_ptr_tests.cpp
4 //
5 // Tests for ptr_to_fun, ptr_to_fun0 and ptr_to_mem_fun.
6 //
7 //
8 /*=============================================================================
9 Copyright (c) 2000-2003 Brian McNamara and Yannis Smaragdakis
10 Copyright (c) 2001-2007 Joel de Guzman
11 Copyright (c) 2015 John Fletcher
12
13 Distributed under the Boost Software License, Version 1.0. (See accompanying
14 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
15 ==============================================================================*/
16
17 #include <iostream>
18 #include <boost/phoenix/core.hpp>
19 #include <boost/phoenix/function.hpp>
20 #include <boost/shared_ptr.hpp>
21 #include <boost/phoenix/function/lazy_prelude.hpp>
22
23 #include <boost/detail/lightweight_test.hpp>
24
25 using namespace boost::phoenix;
26
27 using std::cout;
28 using std::endl;
29
30 namespace example {
31
footle()32 int footle()
33 {
34 return 0;
35 }
36
foobar(int x)37 int foobar(int x)
38 {
39 return 2*x;
40 }
41
foxy(int x,int y)42 int foxy(int x,int y)
43 {
44 return x*y;
45 }
46
foxyz(int x,int y,int z)47 int foxyz(int x,int y,int z)
48 {
49 return x*y + z;
50 }
51
fwxyz(int w,int x,int y,int z)52 int fwxyz(int w,int x,int y,int z)
53 {
54 return w + x*y + z;
55 }
56
57 }
58
59 struct O {
60 int aa;
OO61 O( int a ) : aa(a) {}
cfO62 int cf( int x ) const { return x+1; }
fO63 int f( int x ) { return ++aa + x; }
aO64 int a() const { return aa; }
65 };
66
67
main()68 int main() {
69 using boost::phoenix::arg_names::arg1;
70 using boost::phoenix::arg_names::arg2;
71 using boost::phoenix::arg_names::arg3;
72 using boost::phoenix::arg_names::arg4;
73
74 BOOST_TEST( ptr_to_fun0(&example::footle)()() == 0 );
75 BOOST_TEST( ptr_to_fun(&example::foobar)(arg1)(1) == 2 );
76 BOOST_TEST( ptr_to_fun(&example::foxy)(arg1,arg2)(2,3) == 6 );
77 BOOST_TEST( ptr_to_fun(&example::foxyz)(arg1,arg2,arg3)(2,3,4) == 10 );
78 BOOST_TEST( ptr_to_fun(&example::fwxyz)(arg1,arg2,arg3,arg4)(1,2,3,4) == 11);
79
80 O o(1);
81 BOOST_TEST( ptr_to_mem_fun( &O::a )( &o )() == 1 );
82 BOOST_TEST( ptr_to_mem_fun( &O::cf )( &o, 1 )() == 2 );
83 BOOST_TEST( ptr_to_mem_fun( &O::f )( &o, 1 )() == 3 );
84 BOOST_TEST( ptr_to_mem_fun( &O::f )( &o, 1 )() == 4 );
85 BOOST_TEST( ptr_to_mem_fun( &O::cf )( &o, 1 )() == 2 );
86
87 O oo(1);
88 BOOST_TEST( ptr_to_mem_fun( &O::a )( arg1 )( &oo ) == 1 );
89 BOOST_TEST( ptr_to_mem_fun( &O::cf )( &oo, arg1 )(1) == 2 );
90 BOOST_TEST( ptr_to_mem_fun( &O::f )( &oo, arg1 )(1) == 3 );
91 BOOST_TEST( ptr_to_mem_fun( &O::f )( &oo, arg1 )(1) == 4 );
92 BOOST_TEST( ptr_to_mem_fun( &O::cf )( &oo, arg1 )(1) == 2 );
93
94 const O p(1);
95 BOOST_TEST( ptr_to_mem_fun( &O::a )( &p )() == 1 );
96 BOOST_TEST( ptr_to_mem_fun( &O::cf )( &p, 1 )() == 2 );
97
98 boost::shared_ptr<O> r( new O(3) );
99 BOOST_TEST( ptr_to_mem_fun( &O::a )( r )() == 3 );
100 BOOST_TEST( ptr_to_mem_fun( &O::cf )( r, 1 )() == 2 );
101 BOOST_TEST( ptr_to_mem_fun( &O::f )( r, 1 )() == 5 );
102 BOOST_TEST( ptr_to_mem_fun( &O::f )( r, 1 )() == 6 );
103 BOOST_TEST( ptr_to_mem_fun( &O::cf )( r, 1 )() == 2 );
104
105 boost::shared_ptr<const O> s( new O(3) );
106 BOOST_TEST( ptr_to_mem_fun( &O::a )( s )() == 3 );
107 BOOST_TEST( ptr_to_mem_fun( &O::cf )( s, 1 )() == 2 );
108
109 return boost::report_errors();
110 }
111