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| <div class="titlepage"><div><div><h5 class="title"> |
| <a name="spirit.lex.reference.primitives.char_tokendef"></a><a class="link" href="char_tokendef.html" title="Tokens Matching Single Characters">Tokens |
| Matching Single Characters</a> |
| </h5></div></div></div> |
| <a name="spirit.lex.reference.primitives.char_tokendef.description"></a><h6> |
| <a name="id1153417"></a> |
| <a class="link" href="char_tokendef.html#spirit.lex.reference.primitives.char_tokendef.description">Description</a> |
| </h6> |
| <p> |
| The character based token definitions described in this section are: |
| </p> |
| <p> |
| The <code class="computeroutput"><span class="identifier">char_</span></code> creates token |
| definitions matching single characters. The <code class="computeroutput"><span class="identifier">char_</span></code> |
| token definition is associated <code class="computeroutput"><span class="identifier">standard</span></code> |
| encoding namespace. This is needed when doing basic operations such as |
| forcing lower or upper case and dealing with character ranges. |
| </p> |
| <a name="spirit.lex.reference.primitives.char_tokendef.header"></a><h6> |
| <a name="id1153461"></a> |
| <a class="link" href="char_tokendef.html#spirit.lex.reference.primitives.char_tokendef.header">Header</a> |
| </h6> |
| <a name="spirit.lex.reference.primitives.char_tokendef.module_headers"></a><h6> |
| <a name="id1153477"></a> |
| <a class="link" href="char_tokendef.html#spirit.lex.reference.primitives.char_tokendef.module_headers">Module |
| Headers</a> |
| </h6> |
| <pre class="programlisting"><span class="comment">// forwards to <boost/spirit/home/lex/lexer/char_token_def.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">lex_char_token_def</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.lex.reference.primitives.char_tokendef.namespace"></a><h6> |
| <a name="id1153553"></a> |
| <a class="link" href="char_tokendef.html#spirit.lex.reference.primitives.char_tokendef.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">lit</span> <span class="comment">// alias: |
| boost::spirit::lex::lit</span></code> |
| </p> |
| </td></tr> |
| <tr><td> |
| <p> |
| <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">char_</span></code> |
| </p> |
| </td></tr> |
| </tbody> |
| </table></div> |
| <a name="spirit.lex.reference.primitives.char_tokendef.model_of"></a><h6> |
| <a name="id1153657"></a> |
| <a class="link" href="char_tokendef.html#spirit.lex.reference.primitives.char_tokendef.model_of">Model |
| of</a> |
| </h6> |
| <div class="blockquote"><blockquote class="blockquote"><p> |
| <a class="link" href="../lexer_concepts/primitivelexer.html" title="PrimitiveLexer"><code class="computeroutput"><span class="identifier">PrimitiveLexer</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">ch</span></code></span></dt> |
| <dd><p> |
| Character-class specific character from <code class="computeroutput"><span class="identifier">standard</span></code> |
| character set. |
| </p></dd> |
| </dl> |
| </div> |
| <a name="spirit.lex.reference.primitives.char_tokendef.expression_semantics"></a><h6> |
| <a name="id1153721"></a> |
| <a class="link" href="char_tokendef.html#spirit.lex.reference.primitives.char_tokendef.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="../lexer_concepts/primitivelexer.html" title="PrimitiveLexer"><code class="computeroutput"><span class="identifier">PrimitiveLexer</span></code></a>. |
| </p> |
| <div class="informaltable"><table class="table"> |
| <colgroup> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| Expression |
| </p> |
| </th> |
| <th> |
| <p> |
| Description |
| </p> |
| </th> |
| </tr></thead> |
| <tbody> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">ch</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Create a token definition matching the character literal <code class="computeroutput"><span class="identifier">ch</span></code>. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">lit</span><span class="special">(</span><span class="identifier">ch</span><span class="special">)</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Create a token definition matching the character literal <code class="computeroutput"><span class="identifier">ch</span></code>. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">char_</span><span class="special">(</span><span class="identifier">ch</span><span class="special">)</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Create a token definition matching the character <code class="computeroutput"><span class="identifier">ch</span></code>. |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <a name="spirit.lex.reference.primitives.char_tokendef.example"></a><h6> |
| <a name="id1153909"></a> |
| <a class="link" href="char_tokendef.html#spirit.lex.reference.primitives.char_tokendef.example">Example</a> |
| </h6> |
| </div> |
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| <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 |
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