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source: downloads/boost_1_33_1/boost/tokenizer.hpp @ 12

Last change on this file since 12 was 12, checked in by landauf, 17 years ago

added boost

File size: 2.7 KB
Line 
1// Boost tokenizer.hpp  -----------------------------------------------------//
2
3// © Copyright Jeremy Siek and John R. Bandela 2001.
4
5// Distributed under the Boost Software License, Version 1.0. (See
6// accompanying file LICENSE_1_0.txt or copy at
7// http://www.boost.org/LICENSE_1_0.txt)
8
9// See http://www.boost.org/libs/tokenizer for documenation
10
11// Revision History:
12// 03 Jul 2003   John Bandela
13//      Converted to new iterator adapter
14// 02 Feb 2002   Jeremy Siek
15//      Removed tabs and a little cleanup.
16
17#ifndef BOOST_TOKENIZER_JRB070303_HPP_
18#define BOOST_TOKENIZER_JRB070303_HPP_
19
20#include <boost/token_iterator.hpp>
21#include <cassert>
22namespace boost {
23
24 
25  //===========================================================================
26  // A container-view of a tokenized "sequence"
27  template <
28    typename TokenizerFunc = char_delimiters_separator<char>, 
29    typename Iterator = std::string::const_iterator,
30    typename Type = std::string
31  >
32  class tokenizer {
33  private:
34    typedef token_iterator_generator<TokenizerFunc,Iterator,Type> TGen;
35       
36    // It seems that MSVC does not like the unqualified use of iterator,
37    // Thus we use iter internally when it is used unqualified and
38    // the users of this class will always qualify iterator.     
39    typedef typename TGen::type iter;
40   
41  public:
42   
43    typedef iter iterator;
44    typedef iter const_iterator;
45    typedef Type value_type;
46    typedef value_type& reference;
47    typedef const value_type& const_reference;
48    typedef value_type* pointer;
49    typedef const pointer const_pointer;
50    typedef void size_type;
51    typedef void difference_type;
52
53    tokenizer(Iterator first, Iterator last,
54              const TokenizerFunc& f = TokenizerFunc()) 
55      : first_(first), last_(last), f_(f) { }
56       
57    template <typename Container>
58    tokenizer(const Container& c)
59      : first_(c.begin()), last_(c.end()), f_() { }
60   
61    template <typename Container>
62    tokenizer(const Container& c,const TokenizerFunc& f)
63      : first_(c.begin()), last_(c.end()), f_(f) { }
64   
65    void assign(Iterator first, Iterator last){
66      first_ = first;
67      last_ = last;
68    }
69   
70    void assign(Iterator first, Iterator last, const TokenizerFunc& f){
71      assign(first,last);
72      f_ = f;
73    }
74   
75    template <typename Container>
76    void assign(const Container& c){
77      assign(c.begin(),c.end());
78    }
79   
80   
81    template <typename Container>
82    void assign(const Container& c, const TokenizerFunc& f){
83      assign(c.begin(),c.end(),f);
84    }
85   
86    iter begin() const { return iter(f_,first_,last_); }
87    iter end() const { return iter(f_,last_,last_); }
88       
89  private:
90    Iterator first_;
91    Iterator last_;
92    TokenizerFunc f_;
93  };
94
95
96} // namespace boost
97
98#endif
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