1 | /* -*- C++ -*- |
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2 | * |
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3 | * This file is a part of LEMON, a generic C++ optimization library |
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4 | * |
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5 | * Copyright (C) 2003-2008 |
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6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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8 | * |
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9 | * Permission to use, modify and distribute this software is granted |
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10 | * provided that this copyright notice appears in all copies. For |
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11 | * precise terms see the accompanying LICENSE file. |
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12 | * |
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13 | * This software is provided "AS IS" with no warranty of any kind, |
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14 | * express or implied, and with no claim as to its suitability for any |
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15 | * purpose. |
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16 | * |
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17 | */ |
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18 | |
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19 | // This file contains a modified version of the concept checking |
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20 | // utility from BOOST. |
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21 | // See the appropriate copyright notice below. |
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22 | |
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23 | // (C) Copyright Jeremy Siek 2000. |
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24 | // Distributed under the Boost Software License, Version 1.0. (See |
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25 | // accompanying file LICENSE_1_0.txt or copy at |
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26 | // http://www.boost.org/LICENSE_1_0.txt) |
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27 | // |
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28 | // Revision History: |
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29 | // 05 May 2001: Workarounds for HP aCC from Thomas Matelich. (Jeremy Siek) |
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30 | // 02 April 2001: Removed limits header altogether. (Jeremy Siek) |
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31 | // 01 April 2001: Modified to use new <boost/limits.hpp> header. (JMaddock) |
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32 | // |
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33 | |
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34 | // See http://www.boost.org/libs/concept_check for documentation. |
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35 | |
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36 | ///\file |
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37 | ///\brief Basic utilities for concept checking. |
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38 | /// |
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39 | ///\todo Are we still using BOOST concept checking utility? |
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40 | ///Is the BOOST copyright notice necessary? |
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41 | |
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42 | #ifndef LEMON_CONCEPT_CHECK_H |
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43 | #define LEMON_CONCEPT_CHECK_H |
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44 | |
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45 | namespace lemon { |
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46 | |
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47 | /* |
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48 | "inline" is used for ignore_unused_variable_warning() |
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49 | and function_requires() to make sure there is no |
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50 | overtarget with g++. |
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51 | */ |
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52 | |
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53 | template <class T> inline void ignore_unused_variable_warning(const T&) { } |
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54 | |
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55 | ///\e |
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56 | template <class Concept> |
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57 | inline void function_requires() |
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58 | { |
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59 | #if !defined(NDEBUG) |
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60 | void (Concept::*x)() = & Concept::constraints; |
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61 | ignore_unused_variable_warning(x); |
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62 | #endif |
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63 | } |
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64 | |
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65 | ///\e |
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66 | template <typename Concept, typename Type> |
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67 | inline void checkConcept() { |
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68 | #if !defined(NDEBUG) |
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69 | typedef typename Concept::template Constraints<Type> ConceptCheck; |
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70 | void (ConceptCheck::*x)() = & ConceptCheck::constraints; |
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71 | ignore_unused_variable_warning(x); |
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72 | #endif |
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73 | } |
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74 | |
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75 | } // namespace lemon |
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76 | |
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77 | #endif // LEMON_CONCEPT_CHECK_H |
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