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<p class='location'><a href='../index.html'>regex</a>::<wbr><a href='index.html'>bytes</a></p><script>window.sidebarCurrent = {name: 'RegexBuilder', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<section id='main' class="content struct">
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<h1 class='fqn'><span class='in-band'>Struct <a href='../index.html'>regex</a>::<wbr><a href='index.html'>bytes</a>::<wbr><a class='struct' href=''>RegexBuilder</a></span><span class='out-of-band'><span id='render-detail'>
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[<span class='inner'>−</span>]
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</span><a id='src-3260' class='srclink' href='../../src/regex/re_builder.rs.html#55' title='goto source code'>[src]</a></span></h1>
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<pre class='rust struct'>pub struct RegexBuilder(_);</pre><div class='docblock'><p>A configurable builder for a regular expression.</p>
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<p>A builder can be used to configure how the regex is built, for example, by
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setting the default flags (which can be overridden in the expression
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itself) or setting various limits.</p>
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</div><h2 id='methods'>Methods</h2><h3 class='impl'><code>impl <a class='struct' href='../../regex/bytes/struct.RegexBuilder.html' title='regex::bytes::RegexBuilder'>RegexBuilder</a></code></h3><div class='impl-items'><h4 id='method.new' class='method'><code>fn <a href='#method.new' class='fnname'>new</a>(pattern: &<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.str.html'>str</a>) -> <a class='struct' href='../../regex/bytes/struct.RegexBuilder.html' title='regex::bytes::RegexBuilder'>RegexBuilder</a></code></h4>
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<div class='docblock'><p>Create a new regular expression builder with the given pattern.</p>
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<p>If the pattern is invalid, then an error will be returned when
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<code>compile</code> is called.</p>
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</div><h4 id='method.compile' class='method'><code>fn <a href='#method.compile' class='fnname'>compile</a>(self) -> <a class='enum' href='https://doc.rust-lang.org/nightly/core/result/enum.Result.html' title='core::result::Result'>Result</a><<a class='struct' href='../../regex/bytes/struct.Regex.html' title='regex::bytes::Regex'>Regex</a>, <a class='enum' href='../../regex/enum.Error.html' title='regex::Error'>Error</a>></code></h4>
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<div class='docblock'><p>Consume the builder and compile the regular expression.</p>
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</div><h4 id='method.case_insensitive' class='method'><code>fn <a href='#method.case_insensitive' class='fnname'>case_insensitive</a>(self, yes: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.bool.html'>bool</a>) -> <a class='struct' href='../../regex/bytes/struct.RegexBuilder.html' title='regex::bytes::RegexBuilder'>RegexBuilder</a></code></h4>
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<div class='docblock'><p>Set the value for the case insensitive (<code>i</code>) flag.</p>
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</div><h4 id='method.multi_line' class='method'><code>fn <a href='#method.multi_line' class='fnname'>multi_line</a>(self, yes: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.bool.html'>bool</a>) -> <a class='struct' href='../../regex/bytes/struct.RegexBuilder.html' title='regex::bytes::RegexBuilder'>RegexBuilder</a></code></h4>
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<div class='docblock'><p>Set the value for the multi-line matching (<code>m</code>) flag.</p>
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</div><h4 id='method.dot_matches_new_line' class='method'><code>fn <a href='#method.dot_matches_new_line' class='fnname'>dot_matches_new_line</a>(self, yes: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.bool.html'>bool</a>) -> <a class='struct' href='../../regex/bytes/struct.RegexBuilder.html' title='regex::bytes::RegexBuilder'>RegexBuilder</a></code></h4>
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<div class='docblock'><p>Set the value for the any character (<code>s</code>) flag, where in <code>.</code> matches
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anything when <code>s</code> is set and matches anything except for new line when
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it is not set (the default).</p>
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<p>N.B. "matches anything" means "any byte" for <code>regex::bytes::Regex</code>
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expressions and means "any Unicode codepoint" for <code>regex::Regex</code>
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expressions.</p>
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</div><h4 id='method.swap_greed' class='method'><code>fn <a href='#method.swap_greed' class='fnname'>swap_greed</a>(self, yes: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.bool.html'>bool</a>) -> <a class='struct' href='../../regex/bytes/struct.RegexBuilder.html' title='regex::bytes::RegexBuilder'>RegexBuilder</a></code></h4>
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<div class='docblock'><p>Set the value for the greedy swap (<code>U</code>) flag.</p>
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</div><h4 id='method.ignore_whitespace' class='method'><code>fn <a href='#method.ignore_whitespace' class='fnname'>ignore_whitespace</a>(self, yes: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.bool.html'>bool</a>) -> <a class='struct' href='../../regex/bytes/struct.RegexBuilder.html' title='regex::bytes::RegexBuilder'>RegexBuilder</a></code></h4>
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<div class='docblock'><p>Set the value for the ignore whitespace (<code>x</code>) flag.</p>
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</div><h4 id='method.unicode' class='method'><code>fn <a href='#method.unicode' class='fnname'>unicode</a>(self, yes: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.bool.html'>bool</a>) -> <a class='struct' href='../../regex/bytes/struct.RegexBuilder.html' title='regex::bytes::RegexBuilder'>RegexBuilder</a></code></h4>
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<div class='docblock'><p>Set the value for the Unicode (<code>u</code>) flag.</p>
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<p>For byte based regular expressions, this is disabled by default.</p>
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</div><h4 id='method.size_limit' class='method'><code>fn <a href='#method.size_limit' class='fnname'>size_limit</a>(self, limit: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.usize.html'>usize</a>) -> <a class='struct' href='../../regex/bytes/struct.RegexBuilder.html' title='regex::bytes::RegexBuilder'>RegexBuilder</a></code></h4>
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<div class='docblock'><p>Set the approximate size limit of the compiled regular expression.</p>
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<p>This roughly corresponds to the number of bytes occupied by a single
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compiled program. If the program exceeds this number, then a
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compilation error is returned.</p>
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</div><h4 id='method.dfa_size_limit' class='method'><code>fn <a href='#method.dfa_size_limit' class='fnname'>dfa_size_limit</a>(self, limit: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.usize.html'>usize</a>) -> <a class='struct' href='../../regex/bytes/struct.RegexBuilder.html' title='regex::bytes::RegexBuilder'>RegexBuilder</a></code></h4>
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<div class='docblock'><p>Set the approximate size of the cache used by the DFA.</p>
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<p>This roughly corresponds to the number of bytes that the DFA will
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use while searching.</p>
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<p>Note that this is a <em>per thread</em> limit. There is no way to set a global
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limit. In particular, if a regex is used from multiple threads
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simulanteously, then each thread may use up to the number of bytes
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specified here.</p>
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