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| <title>End of Line (eol)</title> |
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| <div class="section"> |
| <div class="titlepage"><div><div><h5 class="title"> |
| <a name="spirit.karma.reference.auxiliary.eol"></a><a class="link" href="eol.html" title="End of Line (eol)">End of Line |
| (<code class="computeroutput"><span class="identifier">eol</span></code>)</a> |
| </h5></div></div></div> |
| <a name="spirit.karma.reference.auxiliary.eol.description"></a><h6> |
| <a name="id1011536"></a> |
| <a class="link" href="eol.html#spirit.karma.reference.auxiliary.eol.description">Description</a> |
| </h6> |
| <p> |
| The <code class="computeroutput"><span class="identifier">eol</span></code> component generates |
| a single newline character. It is equivalent to <code class="computeroutput"><span class="identifier">lit</span><span class="special">(</span><span class="char">'\n'</span><span class="special">)</span></code> |
| or simply '\n' (please see the <a class="link" href="../char/char_generator.html" title="Character Generators (char_, lit)"><code class="computeroutput"><span class="identifier">char_</span></code></a> generator module for more |
| details). |
| </p> |
| <a name="spirit.karma.reference.auxiliary.eol.header"></a><h6> |
| <a name="id1011589"></a> |
| <a class="link" href="eol.html#spirit.karma.reference.auxiliary.eol.header">Header</a> |
| </h6> |
| <pre class="programlisting"><span class="comment">// forwards to <boost/spirit/home/karma/auxiliary/eol.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">karma_eol</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.karma.reference.auxiliary.eol.namespace"></a><h6> |
| <a name="id1011664"></a> |
| <a class="link" href="eol.html#spirit.karma.reference.auxiliary.eol.namespace">Namespace</a> |
| </h6> |
| <div class="informaltable"><table class="table"> |
| <colgroup><col></colgroup> |
| <thead><tr><th> |
| <p> |
| Name |
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| <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">eol</span> <span class="comment">// alias: |
| boost::spirit::karma::eol</span></code> |
| </p> |
| </td></tr></tbody> |
| </table></div> |
| <a name="spirit.karma.reference.auxiliary.eol.model_of"></a><h6> |
| <a name="id1011743"></a> |
| <a class="link" href="eol.html#spirit.karma.reference.auxiliary.eol.model_of">Model of</a> |
| </h6> |
| <div class="blockquote"><blockquote class="blockquote"><p> |
| <a class="link" href="../generator_concepts/primitivegenerator.html" title="PrimitiveGenerator"><code class="computeroutput"><span class="identifier">PrimitiveGenerator</span></code></a> |
| </p></blockquote></div> |
| <a name="spirit.karma.reference.auxiliary.eol.expression_semantics"></a><h6> |
| <a name="id1011778"></a> |
| <a class="link" href="eol.html#spirit.karma.reference.auxiliary.eol.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="../generator_concepts/primitivegenerator.html" title="PrimitiveGenerator"><code class="computeroutput"><span class="identifier">PrimitiveGenerator</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">eol</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Create a component generating a single end of line character |
| in the output. This generator never fails (unless the underlying |
| output stream reports an error). |
| </p> |
| </td> |
| </tr></tbody> |
| </table></div> |
| <a name="spirit.karma.reference.auxiliary.eol.attributes"></a><h6> |
| <a name="id1011869"></a> |
| <a class="link" href="eol.html#spirit.karma.reference.auxiliary.eol.attributes">Attributes</a> |
| </h6> |
| <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">eol</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">unused</span></code> |
| </p> |
| </td> |
| </tr></tbody> |
| </table></div> |
| <a name="spirit.karma.reference.auxiliary.eol.complexity"></a><h6> |
| <a name="id1011950"></a> |
| <a class="link" href="eol.html#spirit.karma.reference.auxiliary.eol.complexity">Complexity</a> |
| </h6> |
| <div class="blockquote"><blockquote class="blockquote"><p> |
| O(1) |
| </p></blockquote></div> |
| <p> |
| The complexity is constant as a single character is generated in the |
| output. |
| </p> |
| <a name="spirit.karma.reference.auxiliary.eol.example"></a><h6> |
| <a name="id1011974"></a> |
| <a class="link" href="eol.html#spirit.karma.reference.auxiliary.eol.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="../karma_basics.html#spirit.karma.reference.karma_basics.examples">Basics Examples</a> |
| section. |
| </p></td></tr> |
| </table></div> |
| <p> |
| Some includes: |
| </p> |
| <p> |
| |
| </p> |
| <pre class="programlisting"><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">karma</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></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">phoenix_core</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></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">phoenix_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">include</span><span class="special">/</span><span class="identifier">std_pair</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">string</span><span class="special">></span> |
| </pre> |
| <p> |
| </p> |
| <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">karma</span><span class="special">::</span><span class="identifier">eol</span><span class="special">;</span> |
| </pre> |
| <p> |
| </p> |
| <p> |
| Basic usage of the <code class="computeroutput"><span class="identifier">eol</span></code> |
| generator: |
| </p> |
| <p> |
| |
| </p> |
| <pre class="programlisting"><span class="identifier">test_generator</span><span class="special">(</span><span class="string">"\n"</span><span class="special">,</span> <span class="identifier">eol</span><span class="special">);</span> |
| <span class="identifier">test_generator</span><span class="special">(</span><span class="string">"abc\n"</span><span class="special">,</span> <span class="string">"abc"</span> <span class="special"><<</span> <span class="identifier">eol</span><span class="special">);</span> |
| </pre> |
| <p> |
| </p> |
| </div> |
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| <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>) |
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