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| <div class="titlepage"><div><div><h5 class="title"> |
| <a name="spirit.qi.reference.directive.no_skip"></a><a class="link" href="no_skip.html" title="Inhibiting Skipping Without Pre-skip (no_skip[])">Inhibiting |
| Skipping Without Pre-skip (<code class="computeroutput"><span class="identifier">no_skip</span><span class="special">[]</span></code>)</a> |
| </h5></div></div></div> |
| <a name="spirit.qi.reference.directive.no_skip.description"></a><h6> |
| <a name="id886514"></a> |
| <a class="link" href="no_skip.html#spirit.qi.reference.directive.no_skip.description">Description</a> |
| </h6> |
| <p> |
| The <code class="computeroutput"><span class="identifier">no_skip</span><span class="special">[]</span></code> |
| directive turns off white space skipping. The difference to <a class="link" href="lexeme.html" title="Inhibiting Skipping (lexeme[])"><code class="computeroutput"><span class="identifier">lexeme</span></code></a> is that it does not do |
| pre-skipping in any case. Otherwise it is completely equivalent to the |
| <a class="link" href="lexeme.html" title="Inhibiting Skipping (lexeme[])"><code class="computeroutput"><span class="identifier">lexeme</span></code></a> |
| directive. |
| </p> |
| <a name="spirit.qi.reference.directive.no_skip.header"></a><h6> |
| <a name="id886560"></a> |
| <a class="link" href="no_skip.html#spirit.qi.reference.directive.no_skip.header">Header</a> |
| </h6> |
| <pre class="programlisting"><span class="comment">// forwards to <boost/spirit/home/qi/directive/no_skip.hpp> |
| </span><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">spirit</span><span class="special">/</span><span class="identifier">include</span><span class="special">/</span><span class="identifier">qi_no_skip</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| </pre> |
| <p> |
| Also, see <a class="link" href="../../../structure/include.html" title="Include">Include Structure</a>. |
| </p> |
| <a name="spirit.qi.reference.directive.no_skip.namespace"></a><h6> |
| <a name="id886635"></a> |
| <a class="link" href="no_skip.html#spirit.qi.reference.directive.no_skip.namespace">Namespace</a> |
| </h6> |
| <div class="informaltable"><table class="table"> |
| <colgroup><col></colgroup> |
| <thead><tr><th> |
| <p> |
| Name |
| </p> |
| </th></tr></thead> |
| <tbody><tr><td> |
| <p> |
| <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">no_skip</span> <span class="comment">// |
| alias: boost::spirit::qi::no_skip</span></code> |
| </p> |
| </td></tr></tbody> |
| </table></div> |
| <a name="spirit.qi.reference.directive.no_skip.model_of"></a><h6> |
| <a name="id886714"></a> |
| <a class="link" href="no_skip.html#spirit.qi.reference.directive.no_skip.model_of">Model |
| of</a> |
| </h6> |
| <div class="blockquote"><blockquote class="blockquote"><p> |
| <a class="link" href="../parser_concepts/unaryparser.html" title="UnaryParser"><code class="computeroutput"><span class="identifier">UnaryParser</span></code></a> |
| </p></blockquote></div> |
| <div class="variablelist"> |
| <p class="title"><b>Notation</b></p> |
| <dl> |
| <dt><span class="term"><code class="computeroutput"><span class="identifier">a</span></code></span></dt> |
| <dd><p> |
| A <a class="link" href="../parser_concepts/parser.html" title="Parser"><code class="computeroutput"><span class="identifier">Parser</span></code></a>. |
| </p></dd> |
| </dl> |
| </div> |
| <a name="spirit.qi.reference.directive.no_skip.expression_semantics"></a><h6> |
| <a name="id886782"></a> |
| <a class="link" href="no_skip.html#spirit.qi.reference.directive.no_skip.expression_semantics">Expression |
| Semantics</a> |
| </h6> |
| <p> |
| Semantics of an expression is defined only where it differs from, or |
| is not defined in <a class="link" href="../parser_concepts/unaryparser.html" title="UnaryParser"><code class="computeroutput"><span class="identifier">UnaryParser</span></code></a>. |
| </p> |
| <div class="informaltable"><table class="table"> |
| <colgroup> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| Expression |
| </p> |
| </th> |
| <th> |
| <p> |
| Semantics |
| </p> |
| </th> |
| </tr></thead> |
| <tbody><tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">no_skip</span><span class="special">[</span><span class="identifier">a</span><span class="special">]</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Turns off white space skipping for the subject parser, <code class="computeroutput"><span class="identifier">a</span></code> (and all its children). |
| This directive does not pre-skips. |
| </p> |
| </td> |
| </tr></tbody> |
| </table></div> |
| <a name="spirit.qi.reference.directive.no_skip.attributes"></a><h6> |
| <a name="id886889"></a> |
| <a class="link" href="no_skip.html#spirit.qi.reference.directive.no_skip.attributes">Attributes</a> |
| </h6> |
| <p> |
| See <a class="link" href="../../quick_reference/compound_attribute_rules.html#spirit.qi.quick_reference.compound_attribute_rules.notation">Compound |
| Attribute Notation</a>. |
| </p> |
| <div class="informaltable"><table class="table"> |
| <colgroup> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| Expression |
| </p> |
| </th> |
| <th> |
| <p> |
| Attribute |
| </p> |
| </th> |
| </tr></thead> |
| <tbody><tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">no_skip</span><span class="special">[</span><span class="identifier">a</span><span class="special">]</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| |
| </p> |
| <pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">a</span><span class="special">:</span> <span class="identifier">A</span> <span class="special">--></span> <span class="identifier">no_skip</span><span class="special">[</span><span class="identifier">a</span><span class="special">]:</span> <span class="identifier">A</span> |
| <span class="identifier">a</span><span class="special">:</span> <span class="identifier">Unused</span> <span class="special">--></span> <span class="identifier">no_skip</span><span class="special">[</span><span class="identifier">a</span><span class="special">]:</span> <span class="identifier">Unused</span></pre> |
| <p> |
| </p> |
| </td> |
| </tr></tbody> |
| </table></div> |
| <a name="spirit.qi.reference.directive.no_skip.complexity"></a><h6> |
| <a name="id887063"></a> |
| <a class="link" href="no_skip.html#spirit.qi.reference.directive.no_skip.complexity">Complexity</a> |
| </h6> |
| <div class="blockquote"><blockquote class="blockquote"><p> |
| The complexity is defined by the complexity of the subject parser, |
| <code class="computeroutput"><span class="identifier">a</span></code> |
| </p></blockquote></div> |
| <a name="spirit.qi.reference.directive.no_skip.example"></a><h6> |
| <a name="id887091"></a> |
| <a class="link" href="no_skip.html#spirit.qi.reference.directive.no_skip.example">Example</a> |
| </h6> |
| <div class="note"><table border="0" summary="Note"> |
| <tr> |
| <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../images/note.png"></td> |
| <th align="left">Note</th> |
| </tr> |
| <tr><td align="left" valign="top"><p> |
| The test harness for the example(s) below is presented in the <a class="link" href="../basics.html#spirit.qi.reference.basics.examples">Basics Examples</a> |
| section. |
| </p></td></tr> |
| </table></div> |
| <p> |
| Some using declarations: |
| </p> |
| <p> |
| |
| </p> |
| <pre class="programlisting"><span class="keyword">using</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">qi</span><span class="special">::</span><span class="identifier">no_skip</span><span class="special">;</span> |
| <span class="keyword">using</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">qi</span><span class="special">::</span><span class="identifier">char_</span><span class="special">;</span> |
| </pre> |
| <p> |
| </p> |
| <p> |
| Simple usage of <code class="computeroutput"><span class="identifier">no_skip</span><span class="special">[]</span></code>: |
| </p> |
| <p> |
| The use of no_skip here will prevent skipping of whitespace in front |
| and in between the characters of the string <code class="computeroutput"><span class="char">' |
| abc '</span></code>. |
| </p> |
| <p> |
| |
| </p> |
| <pre class="programlisting"><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="identifier">str</span><span class="special">;</span> |
| <span class="identifier">test_phrase_parser_attr</span><span class="special">(</span><span class="string">"' abc '"</span><span class="special">,</span> |
| <span class="char">'\''</span> <span class="special">>></span> <span class="identifier">no_skip</span><span class="special">[+~</span><span class="identifier">char_</span><span class="special">(</span><span class="char">'\''</span><span class="special">)]</span> <span class="special">>></span> <span class="char">'\''</span><span class="special">,</span> <span class="identifier">str</span><span class="special">);</span> |
| <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">str</span> <span class="special"><<</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span> <span class="comment">// will output: > abc < |
| </span></pre> |
| <p> |
| </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 © 2001-2010 Joel de Guzman, Hartmut Kaiser<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> |
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