/usr/share/doc/flex-doc/html/unnamed_002dfaq

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<!-- 
The flex manual is placed under the same licensing conditions as the
rest of flex:

Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2012
The Flex Project.

Copyright (C) 1990, 1997 The Regents of the University of California.
All rights reserved.

This code is derived from software contributed to Berkeley by
Vern Paxson.

The United States Government has rights in this work pursuant
to contract no. DE-AC03-76SF00098 between the United States
Department of Energy and the University of California.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.

Neither the name of the University nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.

THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. -->
<!-- Created by GNU Texinfo 6.5, http://www.gnu.org/software/texinfo/ -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>unnamed-faq-78 (Lexical Analysis With Flex, for Flex 2.6.4)</title>

<meta name="description" content="unnamed-faq-78 (Lexical Analysis With Flex, for Flex 2.6.4)">
<meta name="keywords" content="unnamed-faq-78 (Lexical Analysis With Flex, for Flex 2.6.4)">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
<link href="index.html#Top" rel="start" title="Top">
<link href="Indices.html#Indices" rel="index" title="Indices">
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
<link href="FAQ.html#FAQ" rel="up" title="FAQ">
<link href="unnamed_002dfaq_002d79.html#unnamed_002dfaq_002d79" rel="next" title="unnamed-faq-79">
<link href="unnamed_002dfaq_002d77.html#unnamed_002dfaq_002d77" rel="prev" title="unnamed-faq-77">
<style type="text/css">
<!--
a.summary-letter {text-decoration: none}
blockquote.indentedblock {margin-right: 0em}
blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
blockquote.smallquotation {font-size: smaller}
div.display {margin-left: 3.2em}
div.example {margin-left: 3.2em}
div.lisp {margin-left: 3.2em}
div.smalldisplay {margin-left: 3.2em}
div.smallexample {margin-left: 3.2em}
div.smalllisp {margin-left: 3.2em}
kbd {font-style: oblique}
pre.display {font-family: inherit}
pre.format {font-family: inherit}
pre.menu-comment {font-family: serif}
pre.menu-preformatted {font-family: serif}
pre.smalldisplay {font-family: inherit; font-size: smaller}
pre.smallexample {font-size: smaller}
pre.smallformat {font-family: inherit; font-size: smaller}
pre.smalllisp {font-size: smaller}
span.nolinebreak {white-space: nowrap}
span.roman {font-family: initial; font-weight: normal}
span.sansserif {font-family: sans-serif; font-weight: normal}
ul.no-bullet {list-style: none}
-->
</style>


</head>

<body lang="en">
<a name="unnamed_002dfaq_002d78"></a>
<div class="header">
<p>
Next: <a href="unnamed_002dfaq_002d79.html#unnamed_002dfaq_002d79" accesskey="n" rel="next">unnamed-faq-79</a>, Previous: <a href="unnamed_002dfaq_002d77.html#unnamed_002dfaq_002d77" accesskey="p" rel="prev">unnamed-faq-77</a>, Up: <a href="FAQ.html#FAQ" accesskey="u" rel="up">FAQ</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Indices.html#Indices" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<a name="unnamed_002dfaq_002d78-1"></a>
<h3 class="unnumberedsec">unnamed-faq-78</h3>
<div class="example">
<pre class="verbatim">To: soumen@almaden.ibm.com
Subject: Re: Flex++ 2.5.3 instance member vs. static member
In-reply-to: Your message of Mon, 27 Jul 1998 02:10:04 PDT.
Date: Tue, 28 Jul 1998 01:10:34 PDT
From: Vern Paxson &lt;vern&gt;

&gt; %{
&gt; int mylineno = 0;
&gt; %}
&gt; ws      [ \t]+
&gt; alpha   [A-Za-z]
&gt; dig     [0-9]
&gt; %%
&gt;
&gt; Now you'd expect mylineno to be a member of each instance of class
&gt; yyFlexLexer, but is this the case?  A look at the lex.yy.cc file seems to
&gt; indicate otherwise; unless I am missing something the declaration of
&gt; mylineno seems to be outside any class scope.
&gt;
&gt; How will this work if I want to run a multi-threaded application with each
&gt; thread creating a FlexLexer instance?

Derive your own subclass and make mylineno a member variable of it.

		Vern
</pre></div>




</body>
</html>
flex-doc 2.6.4-6 / usr / share / doc / flex-doc / html / unnamed_002dfaq_002d78.html
