|
1 // -*- C++ -*- |
|
2 // Modified for use in LEMON. |
|
3 // We should really consider using Boost... |
|
4 |
|
5 |
|
6 // |
|
7 // (C) Copyright Jeremy Siek 2000. |
|
8 // Distributed under the Boost Software License, Version 1.0. (See |
|
9 // accompanying file LICENSE_1_0.txt or copy at |
|
10 // http://www.boost.org/LICENSE_1_0.txt) |
|
11 // |
|
12 // Revision History: |
|
13 // 05 May 2001: Workarounds for HP aCC from Thomas Matelich. (Jeremy Siek) |
|
14 // 02 April 2001: Removed limits header altogether. (Jeremy Siek) |
|
15 // 01 April 2001: Modified to use new <boost/limits.hpp> header. (JMaddock) |
|
16 // |
|
17 |
|
18 // See http://www.boost.org/libs/concept_check for documentation. |
|
19 |
|
20 #ifndef LEMON_BOOST_CONCEPT_CHECKS_HPP |
|
21 #define LEMON_BOOST_CONCEPT_CHECKS_HPP |
|
22 |
|
23 namespace lemon { |
|
24 |
|
25 /* |
|
26 "inline" is used for ignore_unused_variable_warning() |
|
27 and function_requires() to make sure there is no |
|
28 overhead with g++. |
|
29 */ |
|
30 |
|
31 template <class T> inline void ignore_unused_variable_warning(const T&) { } |
|
32 |
|
33 template <class Concept> |
|
34 inline void function_requires() |
|
35 { |
|
36 #if !defined(NDEBUG) |
|
37 void (Concept::*x)() = & Concept::constraints; |
|
38 ignore_unused_variable_warning(x); |
|
39 #endif |
|
40 } |
|
41 |
|
42 #define BOOST_CLASS_REQUIRE(type_var, ns, concept) \ |
|
43 typedef void (ns::concept <type_var>::* func##type_var##concept)(); \ |
|
44 template <func##type_var##concept Tp1_> \ |
|
45 struct concept_checking_##type_var##concept { }; \ |
|
46 typedef concept_checking_##type_var##concept< \ |
|
47 BOOST_FPTR ns::concept<type_var>::constraints> \ |
|
48 concept_checking_typedef_##type_var##concept |
|
49 |
|
50 #define BOOST_CLASS_REQUIRE2(type_var1, type_var2, ns, concept) \ |
|
51 typedef void (ns::concept <type_var1,type_var2>::* \ |
|
52 func##type_var1##type_var2##concept)(); \ |
|
53 template <func##type_var1##type_var2##concept Tp1_> \ |
|
54 struct concept_checking_##type_var1##type_var2##concept { }; \ |
|
55 typedef concept_checking_##type_var1##type_var2##concept< \ |
|
56 BOOST_FPTR ns::concept<type_var1,type_var2>::constraints> \ |
|
57 concept_checking_typedef_##type_var1##type_var2##concept |
|
58 |
|
59 #define BOOST_CLASS_REQUIRE3(tv1, tv2, tv3, ns, concept) \ |
|
60 typedef void (ns::concept <tv1,tv2,tv3>::* \ |
|
61 func##tv1##tv2##tv3##concept)(); \ |
|
62 template <func##tv1##tv2##tv3##concept Tp1_> \ |
|
63 struct concept_checking_##tv1##tv2##tv3##concept { }; \ |
|
64 typedef concept_checking_##tv1##tv2##tv3##concept< \ |
|
65 BOOST_FPTR ns::concept<tv1,tv2,tv3>::constraints> \ |
|
66 concept_checking_typedef_##tv1##tv2##tv3##concept |
|
67 |
|
68 #define BOOST_CLASS_REQUIRE4(tv1, tv2, tv3, tv4, ns, concept) \ |
|
69 typedef void (ns::concept <tv1,tv2,tv3,tv4>::* \ |
|
70 func##tv1##tv2##tv3##tv4##concept)(); \ |
|
71 template <func##tv1##tv2##tv3##tv4##concept Tp1_> \ |
|
72 struct concept_checking_##tv1##tv2##tv3##tv4##concept { }; \ |
|
73 typedef concept_checking_##tv1##tv2##tv3##tv4##concept< \ |
|
74 BOOST_FPTR ns::concept<tv1,tv2,tv3,tv4>::constraints> \ |
|
75 concept_checking_typedef_##tv1##tv2##tv3##tv4##concept |
|
76 |
|
77 |
|
78 } // namespace lemon |
|
79 |
|
80 #endif // LEMON_BOOST_CONCEPT_CHECKS_HPP |