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1 // Boost.Range library |
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2 // |
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3 // Copyright Thorsten Ottosen 2003-2004. Use, modification and |
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4 // distribution is subject to the Boost Software License, Version |
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5 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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6 // http://www.boost.org/LICENSE_1_0.txt) |
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7 // |
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8 // For more information, see http://www.boost.org/libs/range/ |
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9 // |
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10 |
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11 #ifndef BOOST_RANGE_BEGIN_HPP |
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12 #define BOOST_RANGE_BEGIN_HPP |
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13 |
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14 #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
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15 # pragma once |
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16 #endif |
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17 |
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18 #include <boost/range/config.hpp> |
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19 |
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20 #ifdef BOOST_NO_FUNCTION_TEMPLATE_ORDERING |
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21 #include <boost/range/detail/begin.hpp> |
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22 #else |
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23 |
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24 #include <boost/range/iterator.hpp> |
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25 |
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26 namespace boost |
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27 { |
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28 |
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29 #if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) && \ |
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30 !BOOST_WORKAROUND(__GNUC__, < 3) \ |
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31 /**/ |
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32 namespace range_detail |
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33 { |
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34 #endif |
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35 |
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36 ////////////////////////////////////////////////////////////////////// |
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37 // primary template |
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38 ////////////////////////////////////////////////////////////////////// |
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39 |
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40 template< typename C > |
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41 inline BOOST_DEDUCED_TYPENAME range_iterator<C>::type |
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42 range_begin( C& c ) |
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43 { |
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44 // |
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45 // If you get a compile-error here, it is most likely because |
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46 // you have not implemented range_begin() properly in |
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47 // the namespace of C |
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48 // |
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49 return c.begin(); |
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50 } |
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51 |
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52 ////////////////////////////////////////////////////////////////////// |
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53 // pair |
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54 ////////////////////////////////////////////////////////////////////// |
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55 |
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56 template< typename Iterator > |
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57 inline Iterator range_begin( const std::pair<Iterator,Iterator>& p ) |
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58 { |
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59 return p.first; |
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60 } |
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61 |
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62 template< typename Iterator > |
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63 inline Iterator range_begin( std::pair<Iterator,Iterator>& p ) |
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64 { |
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65 return p.first; |
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66 } |
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67 |
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68 ////////////////////////////////////////////////////////////////////// |
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69 // array |
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70 ////////////////////////////////////////////////////////////////////// |
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71 |
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72 // |
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73 // May this be discarded? Or is it needed for bad compilers? |
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74 // |
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75 template< typename T, std::size_t sz > |
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76 inline const T* range_begin( const T (&a)[sz] ) |
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77 { |
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78 return a; |
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79 } |
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80 |
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81 template< typename T, std::size_t sz > |
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82 inline T* range_begin( T (&a)[sz] ) |
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83 { |
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84 return a; |
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85 } |
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86 |
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87 |
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88 #if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) && \ |
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89 !BOOST_WORKAROUND(__GNUC__, < 3) \ |
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90 /**/ |
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91 } // namespace 'range_detail' |
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92 #endif |
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93 |
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94 |
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95 template< class T > |
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96 inline BOOST_DEDUCED_TYPENAME range_iterator<T>::type begin( T& r ) |
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97 { |
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98 #if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) && \ |
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99 !BOOST_WORKAROUND(__GNUC__, < 3) \ |
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100 /**/ |
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101 using namespace range_detail; |
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102 #endif |
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103 return range_begin( r ); |
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104 } |
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105 |
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106 template< class T > |
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107 inline BOOST_DEDUCED_TYPENAME range_iterator<const T>::type begin( const T& r ) |
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108 { |
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109 #if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) && \ |
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110 !BOOST_WORKAROUND(__GNUC__, < 3) \ |
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111 /**/ |
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112 using namespace range_detail; |
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113 #endif |
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114 return range_begin( r ); |
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115 } |
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116 |
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117 } // namespace boost |
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118 |
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119 #endif // BOOST_NO_FUNCTION_TEMPLATE_ORDERING |
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120 |
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121 namespace boost |
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122 { |
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123 template< class T > |
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124 inline BOOST_DEDUCED_TYPENAME range_iterator<const T>::type |
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125 const_begin( const T& r ) |
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126 { |
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127 return boost::begin( r ); |
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128 } |
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129 } |
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130 |
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131 #endif |
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132 |