245 lines
5.5 KiB
HTML
245 lines
5.5 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="Content-Language" content="en-us">
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<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
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<meta name="GENERATOR" content="Microsoft FrontPage 5.0">
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<meta name="ProgId" content="FrontPage.Editor.Document">
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<title>Boost Tokenizer Class</title>
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</head>
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<body bgcolor="#FFFFFF" text="#000000" link="#0000EE" vlink="#551A8B" alink=
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"#FF0000">
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<p><img src="../../../boost.png" alt="C++ Boost" width="277" height=
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"86"><br></p>
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<h1 align="center">Tokenizer Class</h1>
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<pre> template <
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class TokenizerFunc = char_delimiters_separator<char>,
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class Iterator = std::string::const_iterator,
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class Type = std::string
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>
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class tokenizer
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</pre>
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<p>The tokenizer class provides a container view of a series of tokens
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contained in a sequence. You set the sequence to parse and the
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TokenizerFunction to use to parse the sequence either upon construction or
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using the assign member function. Note: No parsing is actually done upon
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construction. Parsing is done on demand as the tokens are accessed via the
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iterator provided by begin.</p>
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<h2>Example</h2>
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<pre>// simple_example_1.cpp
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#include<iostream>
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#include<boost/tokenizer.hpp>
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#include<string>
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int main(){
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using namespace std;
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using namespace boost;
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string s = "This is, a test";
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tokenizer<> tok(s);
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for(tokenizer<>::iterator beg=tok.begin(); beg!=tok.end();++beg){
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cout << *beg << "\n";
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}
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}
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</pre>
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<p>The output from simple_example_1 is:</p>
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<blockquote>
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<p><code>This<br>
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is<br>
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a<br>
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test</code></p>
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</blockquote>
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<h3>Template Parameters</h3>
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<table border="1" summary="">
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<tr>
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<th>Parameter</th>
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<th>Description</th>
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</tr>
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<tr>
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<td><tt>TokenizerFunc</tt></td>
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<td>The TokenizerFunction used to parse the sequence.</td>
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</tr>
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<tr>
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<td><tt>Iterator</tt></td>
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<td>The type of the iterator the specifies the sequence.</td>
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</tr>
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<tr>
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<td><tt>Type</tt></td>
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<td>The type of the token, typically string.</td>
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</tr>
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</table>
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<p> </p>
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<h2>Related Types</h2>
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<table border="1" summary="">
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<tr>
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<td>
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<p align="center"><strong>Type</strong></p>
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</td>
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<td>
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<p align="center"><strong>Remarks</strong></p>
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</td>
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</tr>
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<tr>
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<td>iterator</td>
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<td>The type returned by begin and end. Note: the category of iterator
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will be at most ForwardIterator. It will be InputIterator if the
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Iterator template parameter is an InputIterator. For any other
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category, it will be ForwardIterator.</td>
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</tr>
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<tr>
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<td>const_iterator</td>
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<td>Same type as iterator.</td>
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</tr>
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<tr>
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<td>value_type</td>
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<td>Same type as the template parameter Type</td>
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</tr>
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<tr>
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<td>reference</td>
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<td>Same type as value_type&</td>
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</tr>
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<tr>
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<td>const_reference</td>
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<td>Same type as const reference</td>
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</tr>
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<tr>
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<td>pointer</td>
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<td>Same type as value_type*</td>
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</tr>
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<tr>
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<td>const_pointer</td>
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<td>Same type as const pointer</td>
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</tr>
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<tr>
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<td>size_type</td>
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<td>void</td>
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</tr>
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<tr>
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<td>difference_type</td>
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<td>void</td>
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</tr>
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</table>
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<p> </p>
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<h2>Construction and Member Functions</h2>
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<pre>tokenizer(Iterator first, Iterator last,const TokenizerFunc& f = TokenizerFunc())
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template<class Container>
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tokenizer(const Container& c,const TokenizerFunc& f = TokenizerFunc())
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void assign(Iterator first, Iterator last)
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void assign(Iterator first, Iterator last, const TokenizerFunc& f)
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template<class Container>
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void assign(const Container& c)
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template<class Container>
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void assign(const Container& c, const TokenizerFunc& f)
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iterator begin() const
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iterator end() const
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</pre>
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<table border="1" summary="">
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<tr>
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<td>
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<p align="center"><strong>Parameter</strong></p>
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</td>
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<td>
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<p align="center"><strong>Description</strong></p>
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</td>
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</tr>
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<tr>
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<td>c</td>
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<td>A container that contains the sequence to parse. Note: c.begin()
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and c.end() must be convertible to the template parameter
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Iterator.</td>
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</tr>
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<tr>
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<td>f</td>
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<td>A functor that is a model of TokenizerFunction that will be used to
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parse the sequence.</td>
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</tr>
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<tr>
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<td>first</td>
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<td>The iterator that represents the beginning position in the sequence
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to be parsed.</td>
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</tr>
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<tr>
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<td>last</td>
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<td>The iterator that represents the past the end position in the
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sequence to be parsed.</td>
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</tr>
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</table>
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<p> </p>
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<hr>
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<p><a href="http://validator.w3.org/check?uri=referer"><img border="0" src=
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"../../doc/images/valid-html401.png" alt="Valid HTML 4.01 Transitional"
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height="31" width="88"></a></p>
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<p>Revised
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<!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->16 February, 2008<!--webbot bot="Timestamp" endspan i-checksum="40414" --></p>
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<p><i>Copyright © 2001 John R. Bandela</i></p>
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<p><i>Distributed under the Boost Software License, Version 1.0. (See
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accompanying file <a href="../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
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copy at <a href=
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"http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</a>)</i></p>
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</body>
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</html>
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