projects / ceph.git / blame
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|---|---|---|
| 7c673cae FG |
1 | /*============================================================================= |
| 2 | Copyright (c) 2002-2003 Hartmut Kaiser | |
| 3 | http://spirit.sourceforge.net/ | |
| 4 | ||
| 5 | Use, modification and distribution is subject to the Boost Software | |
| 6 | License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
| 7 | http://www.boost.org/LICENSE_1_0.txt) | |
| 8 | =============================================================================*/ | |
| 9 | #if !defined(BOOST_SPIRIT_FUNDAMENTAL_IPP) | |
| 10 | #define BOOST_SPIRIT_FUNDAMENTAL_IPP | |
| 11 | ||
| 12 | #include <boost/mpl/int.hpp> | |
| 13 | ||
| 14 | namespace boost { namespace spirit { | |
| 15 | ||
| 16 | BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN | |
| 17 | ||
| 18 | namespace impl | |
| 19 | { | |
| 20 | /////////////////////////////////////////////////////////////////////////// | |
| 21 | // | |
| 22 | // Helper template for counting the number of nodes contained in a | |
| 23 | // given parser type. | |
| 24 | // All parser_category type parsers are counted as nodes. | |
| 25 | // | |
| 26 | /////////////////////////////////////////////////////////////////////////// | |
| 27 | template <typename CategoryT> | |
| 28 | struct nodes; | |
| 29 | ||
| 30 | template <> | |
| 31 | struct nodes<plain_parser_category> { | |
| 32 | ||
| 33 | template <typename ParserT, typename LeafCountT> | |
| 34 | struct count { | |
| 35 | ||
| 20effc67 | 36 | BOOST_STATIC_CONSTANT(int, value = (LeafCountT::value + 1)); |
| 7c673cae FG |
37 | }; |
| 38 | }; | |
| 39 | ||
| 40 | template <> | |
| 41 | struct nodes<unary_parser_category> { | |
| 42 | ||
| 43 | template <typename ParserT, typename LeafCountT> | |
| 44 | struct count { | |
| 45 | ||
| 46 | typedef typename ParserT::subject_t subject_t; | |
| 47 | typedef typename subject_t::parser_category_t subject_category_t; | |
| 48 | ||
| 20effc67 TL |
49 | BOOST_STATIC_CONSTANT(int, value = (nodes<subject_category_t> |
| 50 | ::template count<subject_t, LeafCountT>::value + 1)); | |
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51 | }; |
| 52 | }; | |
| 53 | ||
| 54 | template <> | |
| 55 | struct nodes<action_parser_category> { | |
| 56 | ||
| 57 | template <typename ParserT, typename LeafCountT> | |
| 58 | struct count { | |
| 59 | ||
| 60 | typedef typename ParserT::subject_t subject_t; | |
| 61 | typedef typename subject_t::parser_category_t subject_category_t; | |
| 62 | ||
| 20effc67 TL |
63 | BOOST_STATIC_CONSTANT(int, value = (nodes<subject_category_t> |
| 64 | ::template count<subject_t, LeafCountT>::value + 1)); | |
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65 | }; |
| 66 | }; | |
| 67 | ||
| 68 | template <> | |
| 69 | struct nodes<binary_parser_category> { | |
| 70 | ||
| 71 | template <typename ParserT, typename LeafCountT> | |
| 72 | struct count { | |
| 73 | ||
| 74 | typedef typename ParserT::left_t left_t; | |
| 75 | typedef typename ParserT::right_t right_t; | |
| 76 | typedef typename left_t::parser_category_t left_category_t; | |
| 77 | typedef typename right_t::parser_category_t right_category_t; | |
| 78 | ||
| 79 | typedef count self_t; | |
| 80 | ||
| 20effc67 | 81 | BOOST_STATIC_CONSTANT(int, |
| 7c673cae | 82 | leftcount = (nodes<left_category_t> |
| 20effc67 TL |
83 | ::template count<left_t, LeafCountT>::value)); |
| 84 | BOOST_STATIC_CONSTANT(int, | |
| 7c673cae | 85 | rightcount = (nodes<right_category_t> |
| 20effc67 TL |
86 | ::template count<right_t, LeafCountT>::value)); |
| 87 | BOOST_STATIC_CONSTANT(int, | |
| 88 | value = ((self_t::leftcount) + (self_t::rightcount) + 1)); | |
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89 | }; |
| 90 | }; | |
| 91 | ||
| 92 | /////////////////////////////////////////////////////////////////////////// | |
| 93 | // | |
| 94 | // Helper template for counting the number of leaf nodes contained in a | |
| 95 | // given parser type. | |
| 96 | // Only plain_parser_category type parsers are counted as leaf nodes. | |
| 97 | // | |
| 98 | /////////////////////////////////////////////////////////////////////////// | |
| 99 | template <typename CategoryT> | |
| 100 | struct leafs; | |
| 101 | ||
| 102 | template <> | |
| 103 | struct leafs<plain_parser_category> { | |
| 104 | ||
| 105 | template <typename ParserT, typename LeafCountT> | |
| 106 | struct count { | |
| 107 | ||
| 20effc67 | 108 | BOOST_STATIC_CONSTANT(int, value = (LeafCountT::value + 1)); |
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109 | }; |
| 110 | }; | |
| 111 | ||
| 112 | template <> | |
| 113 | struct leafs<unary_parser_category> { | |
| 114 | ||
| 115 | template <typename ParserT, typename LeafCountT> | |
| 116 | struct count { | |
| 117 | ||
| 118 | typedef typename ParserT::subject_t subject_t; | |
| 119 | typedef typename subject_t::parser_category_t subject_category_t; | |
| 120 | ||
| 20effc67 TL |
121 | BOOST_STATIC_CONSTANT(int, value = (leafs<subject_category_t> |
| 122 | ::template count<subject_t, LeafCountT>::value)); | |
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123 | }; |
| 124 | }; | |
| 125 | ||
| 126 | template <> | |
| 127 | struct leafs<action_parser_category> { | |
| 128 | ||
| 129 | template <typename ParserT, typename LeafCountT> | |
| 130 | struct count { | |
| 131 | ||
| 132 | typedef typename ParserT::subject_t subject_t; | |
| 133 | typedef typename subject_t::parser_category_t subject_category_t; | |
| 134 | ||
| 20effc67 TL |
135 | BOOST_STATIC_CONSTANT(int, value = (leafs<subject_category_t> |
| 136 | ::template count<subject_t, LeafCountT>::value)); | |
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137 | }; |
| 138 | }; | |
| 139 | ||
| 140 | template <> | |
| 141 | struct leafs<binary_parser_category> { | |
| 142 | ||
| 143 | template <typename ParserT, typename LeafCountT> | |
| 144 | struct count { | |
| 145 | ||
| 146 | typedef typename ParserT::left_t left_t; | |
| 147 | typedef typename ParserT::right_t right_t; | |
| 148 | typedef typename left_t::parser_category_t left_category_t; | |
| 149 | typedef typename right_t::parser_category_t right_category_t; | |
| 150 | ||
| 151 | typedef count self_t; | |
| 152 | ||
| 20effc67 | 153 | BOOST_STATIC_CONSTANT(int, |
| 7c673cae | 154 | leftcount = (leafs<left_category_t> |
| 20effc67 TL |
155 | ::template count<left_t, LeafCountT>::value)); |
| 156 | BOOST_STATIC_CONSTANT(int, | |
| 7c673cae | 157 | rightcount = (leafs<right_category_t> |
| 20effc67 TL |
158 | ::template count<right_t, LeafCountT>::value)); |
| 159 | BOOST_STATIC_CONSTANT(int, | |
| 160 | value = (self_t::leftcount + self_t::rightcount)); | |
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161 | }; |
| 162 | }; | |
| 163 | ||
| 164 | } // namespace impl | |
| 165 | ||
| 166 | /////////////////////////////////////////////////////////////////////////////// | |
| 167 | BOOST_SPIRIT_CLASSIC_NAMESPACE_END | |
| 168 | ||
| 169 | }} // namespace boost::spirit | |
| 170 | ||
| 171 | #endif // !defined(BOOST_SPIRIT_FUNDAMENTAL_IPP) |