1 | // Boost.Range library |
2 | // |
3 | // Copyright Thorsten Ottosen, Neil Groves 2006. Use, modification and |
4 | // distribution is subject to the Boost Software License, Version |
5 | // 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
6 | // http://www.boost.org/LICENSE_1_0.txt) |
7 | // |
8 | // For more information, see http://www.boost.org/libs/range/ |
9 | // |
10 | |
11 | #ifndef BOOST_RANGE_ADAPTOR_TOKENIZED_HPP |
12 | #define BOOST_RANGE_ADAPTOR_TOKENIZED_HPP |
13 | |
14 | #include <boost/regex.hpp> |
15 | #include <boost/range/iterator_range.hpp> |
16 | |
17 | namespace boost |
18 | { |
19 | namespace range_detail |
20 | { |
21 | |
22 | template< class R > |
23 | struct tokenized_range : |
24 | public boost::iterator_range< |
25 | boost::regex_token_iterator< |
26 | BOOST_DEDUCED_TYPENAME range_iterator<R>::type |
27 | > |
28 | > |
29 | { |
30 | private: |
31 | typedef |
32 | boost::regex_token_iterator< |
33 | BOOST_DEDUCED_TYPENAME range_iterator<R>::type |
34 | > |
35 | regex_iter; |
36 | |
37 | typedef BOOST_DEDUCED_TYPENAME regex_iter::regex_type |
38 | regex_type; |
39 | |
40 | typedef boost::iterator_range<regex_iter> |
41 | base; |
42 | |
43 | public: |
44 | template< class Regex, class Submatch, class Flag > |
45 | tokenized_range( R& r, const Regex& re, const Submatch& sub, Flag f ) |
46 | : base( regex_iter( boost::begin(r), boost::end(r), |
47 | regex_type(re), sub, f ), |
48 | regex_iter() ) |
49 | { } |
50 | }; |
51 | |
52 | template< class T, class U, class V > |
53 | struct regex_holder |
54 | { |
55 | T re; |
56 | U sub; |
57 | V f; |
58 | |
59 | regex_holder( const T& rex, const U& subm, V flag ) : |
60 | re(rex), sub(subm), f(flag) |
61 | { } |
62 | private: |
63 | // Not assignable |
64 | void operator=(const regex_holder&); |
65 | }; |
66 | |
67 | struct regex_forwarder |
68 | { |
69 | template< class Regex > |
70 | regex_holder<Regex,int,regex_constants::match_flag_type> |
71 | operator()( const Regex& re, |
72 | int submatch = 0, |
73 | regex_constants::match_flag_type f = |
74 | regex_constants::match_default ) const |
75 | { |
76 | return regex_holder<Regex,int, |
77 | regex_constants::match_flag_type>( re, submatch, f ); |
78 | } |
79 | |
80 | template< class Regex, class Submatch > |
81 | regex_holder<Regex,Submatch,regex_constants::match_flag_type> |
82 | operator()( const Regex& re, |
83 | const Submatch& sub, |
84 | regex_constants::match_flag_type f = |
85 | regex_constants::match_default ) const |
86 | { |
87 | return regex_holder<Regex,Submatch, |
88 | regex_constants::match_flag_type>( re, sub, f ); |
89 | } |
90 | }; |
91 | |
92 | template< class BidirectionalRng, class R, class S, class F > |
93 | inline tokenized_range<BidirectionalRng> |
94 | operator|( BidirectionalRng& r, |
95 | const regex_holder<R,S,F>& f ) |
96 | { |
97 | return tokenized_range<BidirectionalRng>( r, f.re, f.sub, f.f ); |
98 | } |
99 | |
100 | template< class BidirectionalRng, class R, class S, class F > |
101 | inline tokenized_range<const BidirectionalRng> |
102 | operator|( const BidirectionalRng& r, |
103 | const regex_holder<R,S,F>& f ) |
104 | { |
105 | return tokenized_range<const BidirectionalRng>( r, f.re, f.sub, f.f ); |
106 | } |
107 | |
108 | } // 'range_detail' |
109 | |
110 | using range_detail::tokenized_range; |
111 | |
112 | namespace adaptors |
113 | { |
114 | namespace |
115 | { |
116 | const range_detail::regex_forwarder tokenized = |
117 | range_detail::regex_forwarder(); |
118 | } |
119 | |
120 | template<class BidirectionalRange, class Regex, class Submatch, class Flag> |
121 | inline tokenized_range<BidirectionalRange> |
122 | tokenize(BidirectionalRange& rng, const Regex& reg, const Submatch& sub, Flag f) |
123 | { |
124 | return tokenized_range<BidirectionalRange>(rng, reg, sub, f); |
125 | } |
126 | |
127 | template<class BidirectionalRange, class Regex, class Submatch, class Flag> |
128 | inline tokenized_range<const BidirectionalRange> |
129 | tokenize(const BidirectionalRange& rng, const Regex& reg, const Submatch& sub, Flag f) |
130 | { |
131 | return tokenized_range<const BidirectionalRange>(rng, reg, sub, f); |
132 | } |
133 | } // 'adaptors' |
134 | |
135 | } |
136 | |
137 | #endif |
138 | |