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- <div class="titlepage"><div><div><h3 class="title">
- <a name="boost_regex.ref.match_results"></a><a class="link" href="match_results.html" title="match_results">match_results</a>
- </h3></div></div></div>
- <h5>
- <a name="boost_regex.ref.match_results.h0"></a>
- <span class="phrase"><a name="boost_regex.ref.match_results.synopsis"></a></span><a class="link" href="match_results.html#boost_regex.ref.match_results.synopsis">Synopsis</a>
- </h5>
- <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">regex</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
- </pre>
- <p>
- Regular expressions are different from many simple pattern-matching algorithms
- in that as well as finding an overall match they can also produce sub-expression
- matches: each sub-expression being delimited in the pattern by a pair of
- parenthesis (...). There has to be some method for reporting sub-expression
- matches back to the user: this is achieved this by defining a class <code class="computeroutput"><span class="identifier">match_results</span></code> that acts as an indexed collection
- of sub-expression matches, each sub-expression match being contained in an
- object of type <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a>.
- </p>
- <p>
- Template class <code class="computeroutput"><span class="identifier">match_results</span></code>
- denotes a collection of character sequences representing the result of a
- regular expression match. Objects of type <code class="computeroutput"><span class="identifier">match_results</span></code>
- are passed to the algorithms <a class="link" href="regex_match.html" title="regex_match"><code class="computeroutput"><span class="identifier">regex_match</span></code></a> and <a class="link" href="regex_search.html" title="regex_search"><code class="computeroutput"><span class="identifier">regex_search</span></code></a>, and are returned by
- the iterator <a class="link" href="regex_iterator.html" title="regex_iterator"><code class="computeroutput"><span class="identifier">regex_iterator</span></code></a>. Storage for the
- collection is allocated and freed as necessary by the member functions of
- class <code class="computeroutput"><span class="identifier">match_results</span></code>.
- </p>
- <p>
- The template class <code class="computeroutput"><span class="identifier">match_results</span></code>
- conforms to the requirements of a Sequence, as specified in (lib.sequence.reqmts),
- except that only operations defined for const-qualified Sequences are supported.
- </p>
- <p>
- Class template <code class="computeroutput"><span class="identifier">match_results</span></code>
- is most commonly used as one of the typedefs <code class="computeroutput"><span class="identifier">cmatch</span></code>,
- <code class="computeroutput"><span class="identifier">wcmatch</span></code>, <code class="computeroutput"><span class="identifier">smatch</span></code>,
- or <code class="computeroutput"><span class="identifier">wsmatch</span></code>:
- </p>
- <pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span>
- <span class="keyword">class</span> <span class="identifier">Allocator</span> <span class="special">=</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">allocator</span><span class="special"><</span><span class="identifier">sub_match</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">></span> <span class="special">></span>
- <span class="keyword">class</span> <span class="identifier">match_results</span><span class="special">;</span>
- <span class="keyword">typedef</span> <span class="identifier">match_results</span><span class="special"><</span><span class="keyword">const</span> <span class="keyword">char</span><span class="special">*></span> <span class="identifier">cmatch</span><span class="special">;</span>
- <span class="keyword">typedef</span> <span class="identifier">match_results</span><span class="special"><</span><span class="keyword">const</span> <span class="keyword">wchar_t</span><span class="special">*></span> <span class="identifier">wcmatch</span><span class="special">;</span>
- <span class="keyword">typedef</span> <span class="identifier">match_results</span><span class="special"><</span><span class="identifier">string</span><span class="special">::</span><span class="identifier">const_iterator</span><span class="special">></span> <span class="identifier">smatch</span><span class="special">;</span>
- <span class="keyword">typedef</span> <span class="identifier">match_results</span><span class="special"><</span><span class="identifier">wstring</span><span class="special">::</span><span class="identifier">const_iterator</span><span class="special">></span> <span class="identifier">wsmatch</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span>
- <span class="keyword">class</span> <span class="identifier">Allocator</span> <span class="special">=</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">allocator</span><span class="special"><</span><span class="identifier">sub_match</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">></span> <span class="special">></span>
- <span class="keyword">class</span> <span class="identifier">match_results</span>
- <span class="special">{</span>
- <span class="keyword">public</span><span class="special">:</span>
- <span class="keyword">typedef</span> <span class="identifier">sub_match</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">></span> <span class="identifier">value_type</span><span class="special">;</span>
- <span class="keyword">typedef</span> <span class="keyword">const</span> <span class="identifier">value_type</span><span class="special">&</span> <span class="identifier">const_reference</span><span class="special">;</span>
- <span class="keyword">typedef</span> <span class="identifier">const_reference</span> <span class="identifier">reference</span><span class="special">;</span>
- <span class="keyword">typedef</span> <span class="identifier">implementation</span> <span class="identifier">defined</span> <span class="identifier">const_iterator</span><span class="special">;</span>
- <span class="keyword">typedef</span> <span class="identifier">const_iterator</span> <span class="identifier">iterator</span><span class="special">;</span>
- <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">>::</span><span class="identifier">difference_type</span> <span class="identifier">difference_type</span><span class="special">;</span>
- <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">Allocator</span><span class="special">::</span><span class="identifier">size_type</span> <span class="identifier">size_type</span><span class="special">;</span>
- <span class="keyword">typedef</span> <span class="identifier">Allocator</span> <span class="identifier">allocator_type</span><span class="special">;</span>
- <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">iterator_traits</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">>::</span><span class="identifier">value_type</span> <span class="identifier">char_type</span><span class="special">;</span>
- <span class="keyword">typedef</span> <span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">char_type</span><span class="special">></span> <span class="identifier">string_type</span><span class="special">;</span>
- <span class="comment">// construct/copy/destroy:</span>
- <a class="link" href="match_results.html#boost_regex.match_results.construct">explicit match_results</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">Allocator</span><span class="special">&</span> <span class="identifier">a</span> <span class="special">=</span> <span class="identifier">Allocator</span><span class="special">());</span>
- <a class="link" href="match_results.html#boost_regex.match_results.copy_construct">match_results</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">match_results</span><span class="special">&</span> <span class="identifier">m</span><span class="special">);</span>
- <a class="link" href="match_results.html#boost_regex.match_results.assign">match_results& operator=</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">match_results</span><span class="special">&</span> <span class="identifier">m</span><span class="special">);</span>
- <span class="special">~</span><span class="identifier">match_results</span><span class="special">();</span>
- <span class="comment">// size:</span>
- <span class="identifier">size_type</span> <a class="link" href="match_results.html#boost_regex.match_results.size">size</a><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">size_type</span> <a class="link" href="match_results.html#boost_regex.match_results.max_size">max_size</a><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">bool</span> <a class="link" href="match_results.html#boost_regex.match_results.empty">empty</a><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="comment">// element access:</span>
- <span class="identifier">difference_type</span> <a class="link" href="match_results.html#boost_regex.match_results.length">length</a><span class="special">(</span><span class="keyword">int</span> <span class="identifier">sub</span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">difference_type</span> <a class="link" href="match_results.html#boost_regex.match_results.length">length</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">char_type</span><span class="special">*</span> <span class="identifier">sub</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">></span>
- <span class="identifier">difference_type</span> <a class="link" href="match_results.html#boost_regex.match_results.length">length</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">sub</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A</span><span class="special">></span>
- <span class="identifier">difference_type</span> <a class="link" href="match_results.html#boost_regex.match_results.length">length</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="identifier">A</span><span class="special">>&</span> <span class="identifier">sub</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">difference_type</span> <a class="link" href="match_results.html#boost_regex.match_results.position">position</a><span class="special">(</span><span class="keyword">unsigned</span> <span class="keyword">int</span> <span class="identifier">sub</span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">difference_type</span> <a class="link" href="match_results.html#boost_regex.match_results.position">position</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">char_type</span><span class="special">*</span> <span class="identifier">sub</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">></span>
- <span class="identifier">difference_type</span> <a class="link" href="match_results.html#boost_regex.match_results.position">position</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">sub</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A</span><span class="special">></span>
- <span class="identifier">difference_type</span> <a class="link" href="match_results.html#boost_regex.match_results.position">position</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="identifier">A</span><span class="special">>&</span> <span class="identifier">sub</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">string_type</span> <a class="link" href="match_results.html#boost_regex.match_results.str">str</a><span class="special">(</span><span class="keyword">int</span> <span class="identifier">sub</span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">string_type</span> <a class="link" href="match_results.html#boost_regex.match_results.str">str</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">char_type</span><span class="special">*</span> <span class="identifier">sub</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A</span><span class="special">></span>
- <span class="identifier">string_type</span> <a class="link" href="match_results.html#boost_regex.match_results.str">str</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">char_type</span><span class="special">,</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="identifier">A</span><span class="special">>&</span> <span class="identifier">sub</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">></span>
- <span class="identifier">string_type</span> <a class="link" href="match_results.html#boost_regex.match_results.str">str</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">sub</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A</span><span class="special">></span>
- <span class="identifier">string_type</span> <a class="link" href="match_results.html#boost_regex.match_results.str">str</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="identifier">A</span><span class="special">>&</span> <span class="identifier">sub</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">const_reference</span> <a class="link" href="match_results.html#boost_regex.match_results.subscript">operator[]</a><span class="special">(</span><span class="keyword">int</span> <span class="identifier">n</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">const_reference</span> <a class="link" href="match_results.html#boost_regex.match_results.subscript">operator[]</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">char_type</span><span class="special">*</span> <span class="identifier">n</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A</span><span class="special">></span>
- <span class="identifier">const_reference</span> <a class="link" href="match_results.html#boost_regex.match_results.subscript">operator[]</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">char_type</span><span class="special">,</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="identifier">A</span><span class="special">>&</span> <span class="identifier">n</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">></span>
- <span class="identifier">const_reference</span> <a class="link" href="match_results.html#boost_regex.match_results.subscript">operator[]</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">n</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A</span><span class="special">></span>
- <span class="identifier">const_reference</span> <a class="link" href="match_results.html#boost_regex.match_results.subscript">operator[]</a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="identifier">A</span><span class="special">>&</span> <span class="identifier">n</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">const_reference</span> <a class="link" href="match_results.html#boost_regex.match_results.prefix">prefix</a><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">const_reference</span> <a class="link" href="match_results.html#boost_regex.match_results.suffix">suffix</a><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">const_iterator</span> <a class="link" href="match_results.html#boost_regex.match_results.begin">begin</a><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">const_iterator</span> <a class="link" href="match_results.html#boost_regex.match_results.end">end</a><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="comment">// format:</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">OutputIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Formatter</span><span class="special">></span>
- <span class="identifier">OutputIterator</span> <a class="link" href="match_results.html#boost_regex.match_results.format">format</a><span class="special">(</span><span class="identifier">OutputIterator</span> <span class="identifier">out</span><span class="special">,</span>
- <span class="identifier">Formatter</span> <span class="identifier">fmt</span><span class="special">,</span>
- <span class="identifier">match_flag_type</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="identifier">format_default</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">Formatter</span><span class="special">></span>
- <span class="identifier">string_type</span> <a class="link" href="match_results.html#boost_regex.match_results.format2">format</a><span class="special">(</span><span class="identifier">Formatter</span> <span class="identifier">fmt</span><span class="special">,</span>
- <span class="identifier">match_flag_type</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="identifier">format_default</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">allocator_type</span> <a class="link" href="match_results.html#boost_regex.match_results.get_allocator">get_allocator</a><span class="special">()</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">void</span> <a class="link" href="match_results.html#boost_regex.match_results.swap">swap</a><span class="special">(</span><span class="identifier">match_results</span><span class="special">&</span> <span class="identifier">that</span><span class="special">);</span>
- <span class="preprocessor">#ifdef</span> <span class="identifier">BOOST_REGEX_MATCH_EXTRA</span>
- <span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">value_type</span><span class="special">::</span><span class="identifier">capture_sequence_type</span> <span class="identifier">capture_sequence_type</span><span class="special">;</span>
- <span class="keyword">const</span> <span class="identifier">capture_sequence_type</span><span class="special">&</span> <a class="link" href="match_results.html#boost_regex.match_results.captures">captures</a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">i</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- <span class="preprocessor">#endif</span>
- <span class="special">};</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">></span>
- <span class="keyword">bool</span> <a class="link" href="match_results.html#boost_regex.match_results.op_eq">operator ==</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m1</span><span class="special">,</span>
- <span class="keyword">const</span> <span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m2</span><span class="special">);</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">></span>
- <span class="keyword">bool</span> <a class="link" href="match_results.html#boost_regex.match_results.op_ne">operator !=</a> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m1</span><span class="special">,</span>
- <span class="keyword">const</span> <span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m2</span><span class="special">);</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">></span>
- <span class="identifier">basic_ostream</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span>
- <a class="link" href="match_results.html#boost_regex.match_results.op_stream">operator <<</a> <span class="special">(</span><span class="identifier">basic_ostream</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">os</span><span class="special">,</span>
- <span class="keyword">const</span> <span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m</span><span class="special">);</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">></span>
- <span class="keyword">void</span> <a class="link" href="match_results.html#boost_regex.match_results.op_swap">swap</a><span class="special">(</span><span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m1</span><span class="special">,</span>
- <span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m2</span><span class="special">);</span>
- </pre>
- <h5>
- <a name="boost_regex.ref.match_results.h1"></a>
- <span class="phrase"><a name="boost_regex.ref.match_results.description"></a></span><a class="link" href="match_results.html#boost_regex.ref.match_results.description">Description</a>
- </h5>
- <p>
- In all <code class="computeroutput"><span class="identifier">match_results</span></code> constructors,
- a copy of the Allocator argument is used for any memory allocation performed
- by the constructor or member functions during the lifetime of the object.
- </p>
- <a name="boost_regex.match_results.construct"></a><pre class="programlisting"><span class="identifier">match_results</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">Allocator</span><span class="special">&</span> <span class="identifier">a</span> <span class="special">=</span> <span class="identifier">Allocator</span><span class="special">());</span>
- </pre>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Constructs an object of class
- <code class="computeroutput"><span class="identifier">match_results</span></code>. The postconditions
- of this function are indicated in the table:
- </p>
- <div class="informaltable"><table class="table">
- <colgroup>
- <col>
- <col>
- </colgroup>
- <thead><tr>
- <th>
- <p>
- Element
- </p>
- </th>
- <th>
- <p>
- Value
- </p>
- </th>
- </tr></thead>
- <tbody>
- <tr>
- <td>
- <p>
- empty()
- </p>
- </td>
- <td>
- <p>
- true
- </p>
- </td>
- </tr>
- <tr>
- <td>
- <p>
- size()
- </p>
- </td>
- <td>
- <p>
- 0
- </p>
- </td>
- </tr>
- <tr>
- <td>
- <p>
- str()
- </p>
- </td>
- <td>
- <p>
- basic_string<charT>()
- </p>
- </td>
- </tr>
- </tbody>
- </table></div>
- <a name="boost_regex.match_results.copy_construct"></a><pre class="programlisting"><span class="identifier">match_results</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">match_results</span><span class="special">&</span> <span class="identifier">m</span><span class="special">);</span>
- </pre>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Constructs an object of class match_results,
- as a copy of m.
- </p>
- <a name="boost_regex.match_results.assign"></a><pre class="programlisting"><span class="identifier">match_results</span><span class="special">&</span> <span class="keyword">operator</span><span class="special">=(</span><span class="keyword">const</span> <span class="identifier">match_results</span><span class="special">&</span> <span class="identifier">m</span><span class="special">);</span>
- </pre>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Assigns m to *this. The postconditions
- of this function are indicated in the table:
- </p>
- <div class="informaltable"><table class="table">
- <colgroup>
- <col>
- <col>
- </colgroup>
- <thead><tr>
- <th>
- <p>
- Element
- </p>
- </th>
- <th>
- <p>
- Value
- </p>
- </th>
- </tr></thead>
- <tbody>
- <tr>
- <td>
- <p>
- empty()
- </p>
- </td>
- <td>
- <p>
- m.empty().
- </p>
- </td>
- </tr>
- <tr>
- <td>
- <p>
- size()
- </p>
- </td>
- <td>
- <p>
- m.size().
- </p>
- </td>
- </tr>
- <tr>
- <td>
- <p>
- str(n)
- </p>
- </td>
- <td>
- <p>
- m.str(n) for all integers n < m.size().
- </p>
- </td>
- </tr>
- <tr>
- <td>
- <p>
- prefix()
- </p>
- </td>
- <td>
- <p>
- m.prefix().
- </p>
- </td>
- </tr>
- <tr>
- <td>
- <p>
- suffix()
- </p>
- </td>
- <td>
- <p>
- m.suffix().
- </p>
- </td>
- </tr>
- <tr>
- <td>
- <p>
- (*this)[n]
- </p>
- </td>
- <td>
- <p>
- m[n] for all integers n < m.size().
- </p>
- </td>
- </tr>
- <tr>
- <td>
- <p>
- length(n)
- </p>
- </td>
- <td>
- <p>
- m.length(n) for all integers n < m.size().
- </p>
- </td>
- </tr>
- <tr>
- <td>
- <p>
- position(n)
- </p>
- </td>
- <td>
- <p>
- m.position(n) for all integers n < m.size().
- </p>
- </td>
- </tr>
- </tbody>
- </table></div>
- <a name="boost_regex.match_results.size"></a><pre class="programlisting"><span class="identifier">size_type</span> <span class="identifier">size</span><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
- </pre>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Returns the number of <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a> elements stored in *this;
- that is the number of marked sub-expressions in the regular expression that
- was matched plus one.
- </p>
- <a name="boost_regex.match_results.max_size"></a><pre class="programlisting"><span class="identifier">size_type</span> <span class="identifier">max_size</span><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
- </pre>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Returns the maximum number of
- <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a>
- elements that can be stored in *this.
- </p>
- <a name="boost_regex.match_results.empty"></a><pre class="programlisting"><span class="keyword">bool</span> <span class="identifier">empty</span><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
- </pre>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Returns size() == 0.
- </p>
- <a name="boost_regex.match_results.length"></a><pre class="programlisting"><span class="identifier">difference_type</span> <span class="identifier">length</span><span class="special">(</span><span class="keyword">int</span> <span class="identifier">sub</span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">difference_type</span> <span class="identifier">length</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">char_type</span><span class="special">*</span> <span class="identifier">sub</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">></span>
- <span class="identifier">difference_type</span> <span class="identifier">length</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">sub</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A</span><span class="special">></span>
- <span class="identifier">difference_type</span> <span class="identifier">length</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="identifier">A</span><span class="special">>&)</span><span class="keyword">const</span><span class="special">;</span>
- </pre>
- <p>
- <span class="bold"><strong>Requires</strong></span>: that the match_results object
- has been initialized as a result of a successful call to <a class="link" href="regex_search.html" title="regex_search"><code class="computeroutput"><span class="identifier">regex_search</span></code></a> or <a class="link" href="regex_match.html" title="regex_match"><code class="computeroutput"><span class="identifier">regex_match</span></code></a> or was returned from
- a <a class="link" href="regex_iterator.html" title="regex_iterator"><code class="computeroutput"><span class="identifier">regex_iterator</span></code></a>,
- and that the underlying iterators have not been subsequently invalidated.
- Will raise a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">logic_error</span></code> if the match_results object
- was not initialized.
- </p>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Returns the length of sub-expression
- <span class="emphasis"><em>sub</em></span>, that is to say: <code class="computeroutput"><span class="special">(*</span><span class="keyword">this</span><span class="special">)[</span><span class="identifier">sub</span><span class="special">].</span><span class="identifier">length</span><span class="special">()</span></code>.
- </p>
- <p>
- The overloads that accept a string refer to a named sub-expression <span class="emphasis"><em>n</em></span>.
- In the event that there is no such named sub-expression then returns zero.
- </p>
- <p>
- The template overloads of this function, allow the string and/or character
- type to be different from the character type of the underlying sequence and/or
- regular expression: in this case the characters will be widened to the underlying
- character type of the original regular expression. A compiler error will
- occur if the argument passes a wider character type than the underlying sequence.
- These overloads allow a normal narrow character C string literal to be used
- as an argument, even when the underlying character type of the expression
- being matched may be something more exotic such as a Unicode character type.
- </p>
- <a name="boost_regex.match_results.position"></a><pre class="programlisting"><span class="identifier">difference_type</span> <span class="identifier">position</span><span class="special">(</span><span class="keyword">unsigned</span> <span class="keyword">int</span> <span class="identifier">sub</span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">difference_type</span> <span class="identifier">position</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">char_type</span><span class="special">*</span> <span class="identifier">sub</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">></span>
- <span class="identifier">difference_type</span> <span class="identifier">position</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">sub</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A</span><span class="special">></span>
- <span class="identifier">difference_type</span> <span class="identifier">position</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="identifier">A</span><span class="special">>&)</span><span class="keyword">const</span><span class="special">;</span>
- </pre>
- <p>
- <span class="bold"><strong>Requires</strong></span>: that the match_results object
- has been initialized as a result of a successful call to <a class="link" href="regex_search.html" title="regex_search"><code class="computeroutput"><span class="identifier">regex_search</span></code></a> or <a class="link" href="regex_match.html" title="regex_match"><code class="computeroutput"><span class="identifier">regex_match</span></code></a> or was returned from
- a <a class="link" href="regex_iterator.html" title="regex_iterator"><code class="computeroutput"><span class="identifier">regex_iterator</span></code></a>,
- and that the underlying iterators have not been subsequently invalidated.
- Will raise a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">logic_error</span></code> if the match_results object
- was not initialized.
- </p>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Returns the starting location of
- sub-expression <span class="emphasis"><em>sub</em></span>, or -1 if <span class="emphasis"><em>sub</em></span>
- was not matched. Note that if this represents a partial match , then <code class="computeroutput"><span class="identifier">position</span><span class="special">()</span></code>
- will return the location of the partial match even though <code class="computeroutput"><span class="special">(*</span><span class="keyword">this</span><span class="special">)[</span><span class="number">0</span><span class="special">].</span><span class="identifier">matched</span></code>
- is false.
- </p>
- <p>
- The overloads that accept a string refer to a named sub-expression <span class="emphasis"><em>n</em></span>.
- In the event that there is no such named sub-expression then returns -1.
- </p>
- <p>
- The template overloads of this function, allow the string and/or character
- type to be different from the character type of the underlying sequence and/or
- regular expression: in this case the characters will be widened to the underlying
- character type of the original regular expression. A compiler error will
- occur if the argument passes a wider character type than the underlying sequence.
- These overloads allow a normal narrow character C string literal to be used
- as an argument, even when the underlying character type of the expression
- being matched may be something more exotic such as a Unicode character type.
- </p>
- <a name="boost_regex.match_results.str"></a><pre class="programlisting"><span class="identifier">string_type</span> <span class="identifier">str</span><span class="special">(</span><span class="keyword">int</span> <span class="identifier">sub</span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">string_type</span> <span class="identifier">str</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">char_type</span><span class="special">*</span> <span class="identifier">sub</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A</span><span class="special">></span>
- <span class="identifier">string_type</span> <span class="identifier">str</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">char_type</span><span class="special">,</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="identifier">A</span><span class="special">>&</span> <span class="identifier">sub</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">></span>
- <span class="identifier">string_type</span> <span class="identifier">str</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">sub</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A</span><span class="special">></span>
- <span class="identifier">string_type</span> <span class="identifier">str</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="identifier">A</span><span class="special">>&</span> <span class="identifier">sub</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- </pre>
- <p>
- <span class="bold"><strong>Requires</strong></span>: that the match_results object
- has been initialized as a result of a successful call to <a class="link" href="regex_search.html" title="regex_search"><code class="computeroutput"><span class="identifier">regex_search</span></code></a> or <a class="link" href="regex_match.html" title="regex_match"><code class="computeroutput"><span class="identifier">regex_match</span></code></a> or was returned from
- a <a class="link" href="regex_iterator.html" title="regex_iterator"><code class="computeroutput"><span class="identifier">regex_iterator</span></code></a>,
- and that the underlying iterators have not been subsequently invalidated.
- Will raise a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">logic_error</span></code> if the match_results object
- was not initialized.
- </p>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Returns sub-expression <span class="emphasis"><em>sub</em></span>
- as a string: <code class="computeroutput"><span class="identifier">string_type</span><span class="special">((*</span><span class="keyword">this</span><span class="special">)[</span><span class="identifier">sub</span><span class="special">])</span></code>.
- </p>
- <p>
- The overloads that accept a string, return the string that matched the named
- sub-expression <span class="emphasis"><em>n</em></span>. In the event that there is no such
- named sub-expression then returns an empty string.
- </p>
- <p>
- The template overloads of this function, allow the string and/or character
- type to be different from the character type of the underlying sequence and/or
- regular expression: in this case the characters will be widened to the underlying
- character type of the original regular expression. A compiler error will
- occur if the argument passes a wider character type than the underlying sequence.
- These overloads allow a normal narrow character C string literal to be used
- as an argument, even when the underlying character type of the expression
- being matched may be something more exotic such as a Unicode character type.
- </p>
- <a name="boost_regex.match_results.subscript"></a><pre class="programlisting"><span class="identifier">const_reference</span> <span class="keyword">operator</span><span class="special">[](</span><span class="keyword">int</span> <span class="identifier">n</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">const_reference</span> <span class="keyword">operator</span><span class="special">[](</span><span class="keyword">const</span> <span class="identifier">char_type</span><span class="special">*</span> <span class="identifier">n</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A</span><span class="special">></span>
- <span class="identifier">const_reference</span> <span class="keyword">operator</span><span class="special">[](</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">char_type</span><span class="special">,</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="identifier">A</span><span class="special">>&</span> <span class="identifier">n</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">></span>
- <span class="identifier">const_reference</span> <span class="keyword">operator</span><span class="special">[](</span><span class="keyword">const</span> <span class="identifier">charT</span><span class="special">*</span> <span class="identifier">n</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">A</span><span class="special">></span>
- <span class="identifier">const_reference</span> <span class="keyword">operator</span><span class="special">[](</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="identifier">A</span><span class="special">>&</span> <span class="identifier">n</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- </pre>
- <p>
- <span class="bold"><strong>Requires</strong></span>: that the match_results object
- has been initialized as a result of a successful call to <a class="link" href="regex_search.html" title="regex_search"><code class="computeroutput"><span class="identifier">regex_search</span></code></a> or <a class="link" href="regex_match.html" title="regex_match"><code class="computeroutput"><span class="identifier">regex_match</span></code></a> or was returned from
- a <a class="link" href="regex_iterator.html" title="regex_iterator"><code class="computeroutput"><span class="identifier">regex_iterator</span></code></a>,
- and that the underlying iterators have not been subsequently invalidated.
- Will raise a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">logic_error</span></code> if the match_results object
- was not initialized.
- </p>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Returns a reference to the <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a>
- object representing the character sequence that matched marked sub-expression
- <span class="emphasis"><em>n</em></span>. If <code class="computeroutput"><span class="identifier">n</span> <span class="special">==</span> <span class="number">0</span></code> then returns
- a reference to a <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a> object representing the
- character sequence that matched the whole regular expression. If <span class="emphasis"><em>n</em></span>
- is out of range, or if <span class="emphasis"><em>n</em></span> is an unmatched sub-expression,
- then returns a <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a>
- object whose matched member is false.
- </p>
- <p>
- The overloads that accept a string, return a reference to the <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a> object representing the
- character sequence that matched the named sub-expression <span class="emphasis"><em>n</em></span>.
- In the event that there is no such named sub-expression then returns a <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a>
- object whose matched member is false.
- </p>
- <p>
- The template overloads of this function, allow the string and/or character
- type to be different from the character type of the underlying sequence and/or
- regular expression: in this case the characters will be widened to the underlying
- character type of the original regular expression. A compiler error will
- occur if the argument passes a wider character type than the underlying sequence.
- These overloads allow a normal narrow character C string literal to be used
- as an argument, even when the underlying character type of the expression
- being matched may be something more exotic such as a Unicode character type.
- </p>
- <a name="boost_regex.match_results.prefix"></a><pre class="programlisting"><span class="identifier">const_reference</span> <span class="identifier">prefix</span><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
- </pre>
- <p>
- <span class="bold"><strong>Requires</strong></span>: that the match_results object
- has been initialized as a result of a successful call to <a class="link" href="regex_search.html" title="regex_search"><code class="computeroutput"><span class="identifier">regex_search</span></code></a> or <a class="link" href="regex_match.html" title="regex_match"><code class="computeroutput"><span class="identifier">regex_match</span></code></a> or was returned from
- a <a class="link" href="regex_iterator.html" title="regex_iterator"><code class="computeroutput"><span class="identifier">regex_iterator</span></code></a>,
- and that the underlying iterators have not been subsequently invalidated.
- Will raise a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">logic_error</span></code> if the match_results object
- was not initialized.
- </p>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Returns a reference to the <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a>
- object representing the character sequence from the start of the string being
- matched or searched, to the start of the match found.
- </p>
- <a name="boost_regex.match_results.suffix"></a><pre class="programlisting"><span class="identifier">const_reference</span> <span class="identifier">suffix</span><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
- </pre>
- <p>
- <span class="bold"><strong>Requires</strong></span>: that the match_results object
- has been initialized as a result of a successful call to <a class="link" href="regex_search.html" title="regex_search"><code class="computeroutput"><span class="identifier">regex_search</span></code></a> or <a class="link" href="regex_match.html" title="regex_match"><code class="computeroutput"><span class="identifier">regex_match</span></code></a> or was returned from
- a <a class="link" href="regex_iterator.html" title="regex_iterator"><code class="computeroutput"><span class="identifier">regex_iterator</span></code></a>,
- and that the underlying iterators have not been subsequently invalidated.
- Will raise a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">logic_error</span></code> if the match_results object
- was not initialized.
- </p>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Returns a reference to the <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a>
- object representing the character sequence from the end of the match found
- to the end of the string being matched or searched.
- </p>
- <a name="boost_regex.match_results.begin"></a><pre class="programlisting"><span class="identifier">const_iterator</span> <span class="identifier">begin</span><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
- </pre>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Returns a starting iterator that
- enumerates over all the marked sub-expression matches stored in *this.
- </p>
- <a name="boost_regex.match_results.end"></a><pre class="programlisting"><span class="identifier">const_iterator</span> <span class="identifier">end</span><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
- </pre>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Returns a terminating iterator
- that enumerates over all the marked sub-expression matches stored in *this.
- </p>
- <a name="boost_regex.match_results_format"></a><a name="boost_regex.match_results.format"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">OutputIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Formatter</span><span class="special">></span>
- <span class="identifier">OutputIterator</span> <span class="identifier">format</span><span class="special">(</span><span class="identifier">OutputIterator</span> <span class="identifier">out</span><span class="special">,</span>
- <span class="identifier">Formatter</span> <span class="identifier">fmt</span><span class="special">,</span>
- <span class="identifier">match_flag_type</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="identifier">format_default</span><span class="special">);</span>
- </pre>
- <p>
- <span class="bold"><strong>Requires</strong></span>: The type <code class="computeroutput"><span class="identifier">OutputIterator</span></code>
- conforms to the Output Iterator requirements (C++ std 24.1.2).
- </p>
- <p>
- The type <code class="computeroutput"><span class="identifier">Formatter</span></code> must be
- either a pointer to a null-terminated string of type <code class="computeroutput"><span class="identifier">char_type</span><span class="special">[]</span></code>, or be a container of <code class="computeroutput"><span class="identifier">char_type</span></code>'s
- (for example <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">char_type</span><span class="special">></span></code>)
- or be a unary, binary or ternary functor that computes the replacement string
- from a function call: either <code class="computeroutput"><span class="identifier">fmt</span><span class="special">(*</span><span class="keyword">this</span><span class="special">)</span></code>
- which must return a container of <code class="computeroutput"><span class="identifier">char_type</span></code>'s
- to be used as the replacement text, or either <code class="computeroutput"><span class="identifier">fmt</span><span class="special">(*</span><span class="keyword">this</span><span class="special">,</span>
- <span class="identifier">out</span><span class="special">)</span></code>
- or <code class="computeroutput"><span class="identifier">fmt</span><span class="special">(*</span><span class="keyword">this</span><span class="special">,</span> <span class="identifier">out</span><span class="special">,</span> <span class="identifier">flags</span><span class="special">)</span></code>, both of which write the replacement text
- to <code class="computeroutput"><span class="special">*</span><span class="identifier">out</span></code>,
- and then return the new OutputIterator position. Note that if the formatter
- is a functor, then it is <span class="emphasis"><em>passed by value</em></span>: users that
- want to pass function objects with internal state might want to use <a href="../../../../../../doc/html/ref.html" target="_top">Boost.Ref</a> to wrap the object
- so that it's passed by reference.
- </p>
- <p>
- <span class="bold"><strong>Requires</strong></span>: that the match_results object
- has been initialized as a result of a successful call to <a class="link" href="regex_search.html" title="regex_search"><code class="computeroutput"><span class="identifier">regex_search</span></code></a> or <a class="link" href="regex_match.html" title="regex_match"><code class="computeroutput"><span class="identifier">regex_match</span></code></a> or was returned from
- a <a class="link" href="regex_iterator.html" title="regex_iterator"><code class="computeroutput"><span class="identifier">regex_iterator</span></code></a>,
- and that the underlying iterators have not been subsequently invalidated.
- Will raise a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">logic_error</span></code> if the match_results object
- was not initialized.
- </p>
- <p>
- <span class="bold"><strong>Effects</strong></span>: If <code class="computeroutput"><span class="identifier">fmt</span></code>
- is either a null-terminated string, or a container of <code class="computeroutput"><span class="identifier">char_type</span></code>'s,
- then copies the character sequence <code class="computeroutput"><span class="special">[</span><span class="identifier">fmt</span><span class="special">.</span><span class="identifier">begin</span><span class="special">(),</span> <span class="identifier">fmt</span><span class="special">.</span><span class="identifier">end</span><span class="special">())</span></code>
- to <code class="computeroutput"><span class="identifier">OutputIterator</span></code> <span class="emphasis"><em>out</em></span>.
- For each format specifier or escape sequence in <span class="emphasis"><em>fmt</em></span>,
- replace that sequence with either the character(s) it represents, or the
- sequence of characters within <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code> to which it refers. The bitmasks specified
- in flags determines what format specifiers or escape sequences are recognized,
- by default this is the format used by ECMA-262, ECMAScript Language Specification,
- Chapter 15 part 5.4.11 String.prototype.replace.
- </p>
- <p>
- If <code class="computeroutput"><span class="identifier">fmt</span></code> is a function object,
- then depending on the number of arguments the function object accepts, it
- will either:
- </p>
- <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
- <li class="listitem">
- Call <code class="computeroutput"><span class="identifier">fmt</span><span class="special">(*</span><span class="keyword">this</span><span class="special">)</span></code>
- and copy the string returned to <code class="computeroutput"><span class="identifier">OutputIterator</span></code>
- <span class="emphasis"><em>out</em></span>.
- </li>
- <li class="listitem">
- Call <code class="computeroutput"><span class="identifier">fmt</span><span class="special">(*</span><span class="keyword">this</span><span class="special">,</span> <span class="identifier">out</span><span class="special">)</span></code>.
- </li>
- <li class="listitem">
- Call <code class="computeroutput"><span class="identifier">fmt</span><span class="special">(*</span><span class="keyword">this</span><span class="special">,</span> <span class="identifier">out</span><span class="special">,</span> <span class="identifier">flags</span><span class="special">)</span></code>.
- </li>
- </ul></div>
- <p>
- In all cases the new position of the <code class="computeroutput"><span class="identifier">OutputIterator</span></code>
- is returned.
- </p>
- <p>
- See the <a class="link" href="../format.html" title="Search and Replace Format String Syntax">format syntax guide for more information</a>.
- </p>
- <p>
- <span class="bold"><strong>Returns</strong></span>: out.
- </p>
- <a name="boost_regex.match_results.format2"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">Formatter</span><span class="special">></span>
- <span class="identifier">string_type</span> <span class="identifier">format</span><span class="special">(</span><span class="identifier">Formatter</span> <span class="identifier">fmt</span><span class="special">,</span>
- <span class="identifier">match_flag_type</span> <span class="identifier">flags</span> <span class="special">=</span> <span class="identifier">format_default</span><span class="special">);</span>
- </pre>
- <p>
- <span class="bold"><strong>Requires</strong></span> The type <code class="computeroutput"><span class="identifier">Formatter</span></code>
- must be either a pointer to a null-terminated string of type <code class="computeroutput"><span class="identifier">char_type</span><span class="special">[]</span></code>,
- or be a container of <code class="computeroutput"><span class="identifier">char_type</span></code>'s
- (for example <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special"><</span><span class="identifier">char_type</span><span class="special">></span></code>)
- or be a unary, binary or ternary functor that computes the replacement string
- from a function call: either <code class="computeroutput"><span class="identifier">fmt</span><span class="special">(*</span><span class="keyword">this</span><span class="special">)</span></code>
- which must return a container of <code class="computeroutput"><span class="identifier">char_type</span></code>'s
- to be used as the replacement text, or either <code class="computeroutput"><span class="identifier">fmt</span><span class="special">(*</span><span class="keyword">this</span><span class="special">,</span>
- <span class="identifier">out</span><span class="special">)</span></code>
- or <code class="computeroutput"><span class="identifier">fmt</span><span class="special">(*</span><span class="keyword">this</span><span class="special">,</span> <span class="identifier">out</span><span class="special">,</span> <span class="identifier">flags</span><span class="special">)</span></code>, both of which write the replacement text
- to <code class="computeroutput"><span class="special">*</span><span class="identifier">out</span></code>,
- and then return the new OutputIterator position.
- </p>
- <p>
- <span class="bold"><strong>Requires</strong></span>: that the match_results object
- has been initialized as a result of a successful call to <a class="link" href="regex_search.html" title="regex_search"><code class="computeroutput"><span class="identifier">regex_search</span></code></a> or <a class="link" href="regex_match.html" title="regex_match"><code class="computeroutput"><span class="identifier">regex_match</span></code></a> or was returned from
- a <a class="link" href="regex_iterator.html" title="regex_iterator"><code class="computeroutput"><span class="identifier">regex_iterator</span></code></a>,
- and that the underlying iterators have not been subsequently invalidated.
- Will raise a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">logic_error</span></code> if the match_results object
- was not initialized.
- </p>
- <p>
- <span class="bold"><strong>Effects</strong></span>: If <code class="computeroutput"><span class="identifier">fmt</span></code>
- is either a null-terminated string, or a container of <code class="computeroutput"><span class="identifier">char_type</span></code>'s,
- then copies the string <span class="emphasis"><em>fmt</em></span>: For each format specifier
- or escape sequence in <span class="emphasis"><em>fmt</em></span>, replace that sequence with
- either the character(s) it represents, or the sequence of characters within
- <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code>
- to which it refers. The bitmasks specified in flags determines what format
- specifiers or escape sequences are recognized, by default this is the format
- used by ECMA-262, ECMAScript Language Specification, Chapter 15 part 5.4.11
- String.prototype.replace.
- </p>
- <p>
- If <code class="computeroutput"><span class="identifier">fmt</span></code> is a function object,
- then depending on the number of arguments the function object accepts, it
- will either:
- </p>
- <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
- <li class="listitem">
- Call <code class="computeroutput"><span class="identifier">fmt</span><span class="special">(*</span><span class="keyword">this</span><span class="special">)</span></code>
- and return the result.
- </li>
- <li class="listitem">
- Call <code class="computeroutput"><span class="identifier">fmt</span><span class="special">(*</span><span class="keyword">this</span><span class="special">,</span> <span class="identifier">unspecified</span><span class="special">-</span><span class="identifier">output</span><span class="special">-</span><span class="identifier">iterator</span><span class="special">)</span></code>,
- where <code class="computeroutput"><span class="identifier">unspecified</span><span class="special">-</span><span class="identifier">output</span><span class="special">-</span><span class="identifier">iterator</span></code> is an unspecified OutputIterator
- type used to copy the output to the string result.
- </li>
- <li class="listitem">
- Call <code class="computeroutput"><span class="identifier">fmt</span><span class="special">(*</span><span class="keyword">this</span><span class="special">,</span> <span class="identifier">unspecified</span><span class="special">-</span><span class="identifier">output</span><span class="special">-</span><span class="identifier">iterator</span><span class="special">,</span>
- <span class="identifier">flags</span><span class="special">)</span></code>,
- where <code class="computeroutput"><span class="identifier">unspecified</span><span class="special">-</span><span class="identifier">output</span><span class="special">-</span><span class="identifier">iterator</span></code> is an unspecified OutputIterator
- type used to copy the output to the string result.
- </li>
- </ul></div>
- <p>
- See the <a class="link" href="../format.html" title="Search and Replace Format String Syntax">format syntax guide for more information</a>.
- </p>
- <a name="boost_regex.match_results.get_allocator"></a><pre class="programlisting"><span class="identifier">allocator_type</span> <span class="identifier">get_allocator</span><span class="special">()</span><span class="keyword">const</span><span class="special">;</span>
- </pre>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Returns a copy of the Allocator
- that was passed to the object's constructor.
- </p>
- <a name="boost_regex.match_results.swap"></a><pre class="programlisting"><span class="keyword">void</span> <span class="identifier">swap</span><span class="special">(</span><span class="identifier">match_results</span><span class="special">&</span> <span class="identifier">that</span><span class="special">);</span>
- </pre>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Swaps the contents of the two sequences.
- </p>
- <p>
- <span class="bold"><strong>Postcondition</strong></span>: *this contains the sequence
- of matched sub-expressions that were in that, that contains the sequence
- of matched sub-expressions that were in *this.
- </p>
- <p>
- <span class="bold"><strong>Complexity</strong></span>: constant time.
- </p>
- <a name="boost_regex.match_results.capture_type"></a><pre class="programlisting"><span class="keyword">typedef</span> <span class="keyword">typename</span> <span class="identifier">value_type</span><span class="special">::</span><span class="identifier">capture_sequence_type</span> <span class="identifier">capture_sequence_type</span><span class="special">;</span>
- </pre>
- <p>
- Defines an implementation-specific type that satisfies the requirements of
- a standard library Sequence (21.1.1 including the optional Table 68 operations),
- whose value_type is a <code class="computeroutput"><span class="identifier">sub_match</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">></span></code>. This type happens to be <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span><span class="identifier">sub_match</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">></span> <span class="special">></span></code>,
- but you shouldn't actually rely on that.
- </p>
- <a name="boost_regex.match_results.captures"></a><pre class="programlisting"><span class="keyword">const</span> <span class="identifier">capture_sequence_type</span><span class="special">&</span> <span class="identifier">captures</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">i</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
- </pre>
- <p>
- <span class="bold"><strong>Requires</strong></span>: that the match_results object
- has been initialized as a result of a successful call to <a class="link" href="regex_search.html" title="regex_search"><code class="computeroutput"><span class="identifier">regex_search</span></code></a> or <a class="link" href="regex_match.html" title="regex_match"><code class="computeroutput"><span class="identifier">regex_match</span></code></a> or was returned from
- a <a class="link" href="regex_iterator.html" title="regex_iterator"><code class="computeroutput"><span class="identifier">regex_iterator</span></code></a>,
- and that the underlying iterators have not been subsequently invalidated.
- Will raise a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">logic_error</span></code> if the match_results object
- was not initialized.
- </p>
- <p>
- <span class="bold"><strong>Effects</strong></span>: returns a sequence containing all
- the captures obtained for sub-expression i.
- </p>
- <p>
- <span class="bold"><strong>Returns</strong></span>: <code class="computeroutput"><span class="special">(*</span><span class="keyword">this</span><span class="special">)[</span><span class="identifier">i</span><span class="special">].</span><span class="identifier">captures</span><span class="special">();</span></code>
- </p>
- <p>
- <span class="bold"><strong>Preconditions</strong></span>: the library must be built
- and used with BOOST_REGEX_MATCH_EXTRA defined, and you must pass the flag
- match_extra to the regex matching functions ( <a class="link" href="regex_match.html" title="regex_match"><code class="computeroutput"><span class="identifier">regex_match</span></code></a>, <a class="link" href="regex_search.html" title="regex_search"><code class="computeroutput"><span class="identifier">regex_search</span></code></a>, <a class="link" href="regex_iterator.html" title="regex_iterator"><code class="computeroutput"><span class="identifier">regex_iterator</span></code></a> or <a class="link" href="regex_token_iterator.html" title="regex_token_iterator"><code class="computeroutput"><span class="identifier">regex_token_iterator</span></code></a>) in order for
- this member function to be defined and return useful information.
- </p>
- <p>
- <span class="bold"><strong>Rationale</strong></span>: Enabling this feature has several
- consequences:
- </p>
- <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
- <li class="listitem">
- sub_match occupies more memory resulting in complex expressions running
- out of memory or stack space more quickly during matching.
- </li>
- <li class="listitem">
- The matching algorithms are less efficient at handling some features
- (independent sub-expressions for example), even when match_extra is not
- used.
- </li>
- <li class="listitem">
- The matching algorithms are much less efficient (i.e. slower), when match_extra
- is used. Mostly this is down to the extra memory allocations that have
- to take place.
- </li>
- </ul></div>
- <a name="boost_regex.match_results.op_eq"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">></span>
- <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">==</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m1</span><span class="special">,</span>
- <span class="keyword">const</span> <span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m2</span><span class="special">);</span>
- </pre>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Compares the two sequences for
- equality.
- </p>
- <a name="boost_regex.match_results.op_ne"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">></span>
- <span class="keyword">bool</span> <span class="keyword">operator</span> <span class="special">!=</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m1</span><span class="special">,</span>
- <span class="keyword">const</span> <span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m2</span><span class="special">);</span>
- </pre>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Compares the two sequences for
- inequality.
- </p>
- <a name="boost_regex.match_results.op_stream"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">traits</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">></span>
- <span class="identifier">basic_ostream</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span>
- <span class="keyword">operator</span> <span class="special"><<</span> <span class="special">(</span><span class="identifier">basic_ostream</span><span class="special"><</span><span class="identifier">charT</span><span class="special">,</span> <span class="identifier">traits</span><span class="special">>&</span> <span class="identifier">os</span><span class="special">,</span>
- <span class="keyword">const</span> <span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m</span><span class="special">);</span>
- </pre>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Writes the contents of <span class="emphasis"><em>m</em></span>
- to the stream <span class="emphasis"><em>os</em></span> as if by calling <code class="computeroutput"><span class="identifier">os</span>
- <span class="special"><<</span> <span class="identifier">m</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span></code>;
- Returns <span class="emphasis"><em>os</em></span>.
- </p>
- <a name="boost_regex.match_results.op_swap"></a><pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Allocator</span><span class="special">></span>
- <span class="keyword">void</span> <span class="identifier">swap</span><span class="special">(</span><span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m1</span><span class="special">,</span>
- <span class="identifier">match_results</span><span class="special"><</span><span class="identifier">BidirectionalIterator</span><span class="special">,</span> <span class="identifier">Allocator</span><span class="special">>&</span> <span class="identifier">m2</span><span class="special">);</span>
- </pre>
- <p>
- <span class="bold"><strong>Effects</strong></span>: Swaps the contents of the two sequences.
- </p>
- </div>
- <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
- <td align="left"></td>
- <td align="right"><div class="copyright-footer">Copyright © 1998-2013 John Maddock<p>
- Distributed under the Boost Software License, Version 1.0. (See accompanying
- file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
- </p>
- </div></td>
- </tr></table>
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