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| <div class="section"> |
| <div class="titlepage"><div><div><h5 class="title"> |
| <a name="spirit.karma.reference.directive.delimit"></a><a class="link" href="delimit.html" title="Directives Controlling Automatic Delimiting (verbatim[], no_delimit[], delimit[])">Directives |
| Controlling Automatic Delimiting (<code class="computeroutput"><span class="identifier">verbatim</span><span class="special">[]</span></code>, <code class="computeroutput"><span class="identifier">no_delimit</span><span class="special">[]</span></code>, <code class="computeroutput"><span class="identifier">delimit</span><span class="special">[]</span></code>)</a> |
| </h5></div></div></div> |
| <a name="spirit.karma.reference.directive.delimit.description"></a><h6> |
| <a name="id1042609"></a> |
| <a class="link" href="delimit.html#spirit.karma.reference.directive.delimit.description">Description</a> |
| </h6> |
| <p> |
| The directives <code class="computeroutput"><span class="identifier">delimit</span><span class="special">[]</span></code>, <code class="computeroutput"><span class="identifier">no_delimit</span><span class="special">[]</span></code>, and <code class="computeroutput"><span class="identifier">verbatim</span><span class="special">[]</span></code> can be used to control automatic delimiting. |
| The directives <code class="computeroutput"><span class="identifier">verbatim</span><span class="special">[]</span></code> and <code class="computeroutput"><span class="identifier">no_delimit</span><span class="special">[]</span></code> disable any automatic delimiting, while |
| the directive <code class="computeroutput"><span class="identifier">delimit</span><span class="special">[]</span></code> (re-)enables automatic delimiting. |
| </p> |
| <a name="spirit.karma.reference.directive.delimit.header"></a><h6> |
| <a name="id1042690"></a> |
| <a class="link" href="delimit.html#spirit.karma.reference.directive.delimit.header">Header</a> |
| </h6> |
| <p> |
| For the <code class="computeroutput"><span class="identifier">verbatim</span><span class="special">[]</span></code> |
| directive: |
| </p> |
| <pre class="programlisting"><span class="comment">// forwards to <boost/spirit/home/karma/directive/verbatim.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_verbatim</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| </pre> |
| <p> |
| For the <code class="computeroutput"><span class="identifier">no_delimit</span><span class="special">[]</span></code> |
| directive: |
| </p> |
| <pre class="programlisting"><span class="comment">// forwards to <boost/spirit/home/karma/directive/no_delimit.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_no_delimit</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| </pre> |
| <p> |
| For the <code class="computeroutput"><span class="identifier">delimit</span><span class="special">[]</span></code> |
| directive: |
| </p> |
| <pre class="programlisting"><span class="comment">// forwards to <boost/spirit/home/karma/directive/delimit.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_delimit</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.directive.delimit.namespace"></a><h6> |
| <a name="id1042914"></a> |
| <a class="link" href="delimit.html#spirit.karma.reference.directive.delimit.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">verbatim</span> <span class="comment">// |
| alias: boost::spirit::karma::verbatim</span></code> |
| </p> |
| </td></tr> |
| <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_delimit</span> <span class="comment">// |
| alias: boost::spirit::karma::no_delimit</span></code> |
| </p> |
| </td></tr> |
| <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">delimit</span> <span class="comment">// |
| alias: boost::spirit::karma::delimit</span></code> |
| </p> |
| </td></tr> |
| </tbody> |
| </table></div> |
| <a name="spirit.karma.reference.directive.delimit.model_of"></a><h6> |
| <a name="id1043137"></a> |
| <a class="link" href="delimit.html#spirit.karma.reference.directive.delimit.model_of">Model |
| of</a> |
| </h6> |
| <div class="blockquote"><blockquote class="blockquote"><p> |
| <a class="link" href="../generator_concepts/unarygenerator.html" title="UnaryGenerator"><code class="computeroutput"><span class="identifier">UnaryGenerator</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 generator object |
| </p></dd> |
| <dt><span class="term"><code class="computeroutput"><span class="identifier">d</span></code></span></dt> |
| <dd><p> |
| A generator object, or a <a class="link" href="../karma_basics.html#spirit.karma.reference.karma_basics.lazy_argument">Lazy |
| Argument</a> that evaluates to a generator object |
| </p></dd> |
| <dt><span class="term"><code class="computeroutput"><span class="identifier">A</span></code>, <code class="computeroutput"><span class="identifier">D</span></code></span></dt> |
| <dd><p> |
| Attribute types of the generators <code class="computeroutput"><span class="identifier">a</span></code> |
| and <code class="computeroutput"><span class="identifier">d</span></code> |
| </p></dd> |
| </dl> |
| </div> |
| <a name="spirit.karma.reference.directive.delimit.expression_semantics"></a><h6> |
| <a name="id1043263"></a> |
| <a class="link" href="delimit.html#spirit.karma.reference.directive.delimit.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/unarygenerator.html" title="UnaryGenerator"><code class="computeroutput"><span class="identifier">UnaryGenerator</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">delimit</span><span class="special">[</span><span class="identifier">a</span><span class="special">]</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Enable automatic delimiting for the embedded generator <code class="computeroutput"><span class="identifier">a</span></code> while using the <code class="computeroutput"><span class="identifier">space</span></code> generator as the delimiting |
| generator. If used inside a <code class="computeroutput"><span class="identifier">verbatim</span><span class="special">[]</span></code> directive it re-enables the |
| delimiter generator as used outside of this <code class="computeroutput"><span class="identifier">verbatim</span><span class="special">[]</span></code> instead. The directive succeeds |
| as long as the embedded generator succeeded (unless the underlying |
| output stream reports an error). |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">delimit</span><span class="special">(</span><span class="identifier">d</span><span class="special">)[</span><span class="identifier">a</span><span class="special">]</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Enable automatic delimiting for the embedded generator <code class="computeroutput"><span class="identifier">a</span></code> while using the generator |
| <code class="computeroutput"><span class="identifier">d</span></code> as the delimiting |
| generator. The directive succeeds as long as the embedded generator |
| succeeded (unless the underlying output stream reports an error). |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">verbatim</span><span class="special">[</span><span class="identifier">a</span><span class="special">]</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Disable automatic delimiting for the embedded generator <code class="computeroutput"><span class="identifier">a</span></code>. The directive succeeds |
| as long as the embedded generator succeeded (unless the underlying |
| output stream reports an error). This directive it has no effect |
| if it is used when no delimiting is active. When delimiting |
| is active this directive performs a post-delimit step (which |
| is different from the behavior of <code class="computeroutput"><span class="identifier">no_delimit</span><span class="special">[]</span></code>). |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">no_delimit</span><span class="special">[</span><span class="identifier">a</span><span class="special">]</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Disable automatic delimiting for the embedded generator <code class="computeroutput"><span class="identifier">a</span></code>. The directive succeeds |
| as long as the embedded generator succeeded (unless the underlying |
| output stream reports an error). This directive it has no effect |
| if it is used when no delimiting is active. When delimiting |
| is active this directive does not perform a post-delimit step |
| (which is different from the behavior of <code class="computeroutput"><span class="identifier">verbatim</span><span class="special">[]</span></code>. |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <a name="spirit.karma.reference.directive.delimit.attributes"></a><h6> |
| <a name="id1043567"></a> |
| <a class="link" href="delimit.html#spirit.karma.reference.directive.delimit.attributes">Attributes</a> |
| </h6> |
| <p> |
| See <a class="link" href="../../quick_reference/compound_attribute_rules.html#spirit.karma.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">delimit</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">delimit</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">delimit</span><span class="special">[</span><span class="identifier">a</span><span class="special">]:</span> <span class="identifier">Unused</span></pre> |
| <p> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">delimit</span><span class="special">(</span><span class="identifier">d</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">d</span><span class="special">:</span> <span class="identifier">D</span> <span class="special">--></span> <span class="identifier">delimit</span><span class="special">(</span><span class="identifier">d</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">d</span><span class="special">:</span> <span class="identifier">D</span> <span class="special">--></span> <span class="identifier">delimit</span><span class="special">(</span><span class="identifier">d</span><span class="special">)[</span><span class="identifier">a</span><span class="special">]:</span> <span class="identifier">Unused</span></pre> |
| <p> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">verbatim</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">verbatim</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">verbatim</span><span class="special">[</span><span class="identifier">a</span><span class="special">]:</span> <span class="identifier">Unused</span></pre> |
| <p> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">no_delimit</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_delimit</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_delimit</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.karma.reference.directive.delimit.complexity"></a><h6> |
| <a name="id1044142"></a> |
| <a class="link" href="delimit.html#spirit.karma.reference.directive.delimit.complexity">Complexity</a> |
| </h6> |
| <div class="blockquote"><blockquote class="blockquote"><p> |
| The overall complexity of the generator directives <code class="computeroutput"><span class="identifier">delimit</span><span class="special">[]</span></code>, <code class="computeroutput"><span class="identifier">verbatim</span><span class="special">[]</span></code>, and <code class="computeroutput"><span class="identifier">no_delimit</span><span class="special">[]</span></code> is defined by the complexity of its |
| embedded generators. The complexity of the directives themselves is |
| O(1). |
| </p></blockquote></div> |
| <a name="spirit.karma.reference.directive.delimit.example"></a><h6> |
| <a name="id1044194"></a> |
| <a class="link" href="delimit.html#spirit.karma.reference.directive.delimit.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">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">double_</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">karma</span><span class="special">::</span><span class="identifier">delimit</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">karma</span><span class="special">::</span><span class="identifier">verbatim</span><span class="special">;</span> |
| </pre> |
| <p> |
| </p> |
| <p> |
| Basic usage of <code class="computeroutput"><span class="identifier">delimit</span></code> |
| generator directive: |
| </p> |
| <p> |
| |
| </p> |
| <pre class="programlisting"><span class="identifier">test_generator_attr</span><span class="special">(</span><span class="string">"[ 2.0 , 4.3 ] "</span><span class="special">,</span> |
| <span class="identifier">delimit</span><span class="special">[</span><span class="char">'['</span> <span class="special"><<</span> <span class="identifier">double_</span> <span class="special"><<</span> <span class="char">','</span> <span class="special"><<</span> <span class="identifier">double_</span> <span class="special"><<</span> <span class="char">']'</span><span class="special">],</span> <span class="number">2.0</span><span class="special">,</span> <span class="number">4.3</span><span class="special">);</span> |
| <span class="identifier">test_generator_attr</span><span class="special">(</span><span class="string">"[*2.0*,*4.3*]*"</span><span class="special">,</span> |
| <span class="identifier">delimit</span><span class="special">(</span><span class="char">'*'</span><span class="special">)[</span><span class="char">'['</span> <span class="special"><<</span> <span class="identifier">double_</span> <span class="special"><<</span> <span class="char">','</span> <span class="special"><<</span> <span class="identifier">double_</span> <span class="special"><<</span> <span class="char">']'</span><span class="special">],</span> <span class="number">2.0</span><span class="special">,</span> <span class="number">4.3</span><span class="special">);</span> |
| <span class="identifier">test_generator_attr</span><span class="special">(</span><span class="string">"[2.0, 4.3 ] "</span><span class="special">,</span> |
| <span class="identifier">delimit</span><span class="special">[</span><span class="identifier">verbatim</span><span class="special">[</span><span class="char">'['</span> <span class="special"><<</span> <span class="identifier">double_</span> <span class="special"><<</span> <span class="char">','</span><span class="special">]</span> <span class="special"><<</span> <span class="identifier">double_</span> <span class="special"><<</span> <span class="char">']'</span><span class="special">],</span> <span class="number">2.0</span><span class="special">,</span> <span class="number">4.3</span><span class="special">);</span> |
| </pre> |
| <p> |
| </p> |
| </div> |
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