<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
Hi Induh,<br>
<br>
usually what people do is write an Abstract Syntax Tree (AST) grammar
which constructs an AST and then you can use different AST parsers
which have the different actions.<br>
<br>
Or you could use try this
<a class="moz-txt-link-freetext" href="http://www.antlr.org/wiki/display/ANTLR3/Composite+Grammars">http://www.antlr.org/wiki/display/ANTLR3/Composite+Grammars</a><br>
<br>
BR,<br>
Paul<br>
<br>
Indhu Bharathi schrieb:
<blockquote cite="mid:000b01c99d3c$4c184f70$e448ee50$@b@s7software.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html; ">
<meta name="Generator" content="Microsoft Word 12 (filtered medium)">
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.Section1
{page:Section1;}
-->
</style>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
<div class="Section1">
<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is there a way to separate grammar and actions
into two
different files? This will be helpful when multiple people are working
with the
same grammar file (each might write their own actions for the same
production) and
don’t want to create redundant copies of the grammar file.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">One way I thought was to implement observer
pattern. The
parser will be the subject and multiple observers can register to the
same
production and do different things. Another way would be to write a
tool to separate
the actions from the grammar file and reattach it. This way, actions
can be separated
out and maintained in a separate file and can be reattached when
necessary and changes
to grammar can be done in one centralized file.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is there any other way to do this? Any hint
might be useful.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks, Indhu<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<pre wrap="">
<hr size="4" width="90%">
List: <a class="moz-txt-link-freetext" href="http://www.antlr.org/mailman/listinfo/antlr-interest">http://www.antlr.org/mailman/listinfo/antlr-interest</a>
Unsubscribe: <a class="moz-txt-link-freetext" href="http://www.antlr.org/mailman/options/antlr-interest/your-email-address">http://www.antlr.org/mailman/options/antlr-interest/your-email-address</a>
</pre>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Paul Bouché
Voice: +49 30 590080-1284
Nokia Siemens Networks GmbH & Co. KG, An den Treptowers 1, 12435 Berlin, Germany
Sitz der Gesellschaft: München / Registered office: Munich
Registergericht: München / Commercial registry: Munich, HRA 88537
WEEE-Reg.-Nr.: DE 52984304
Persönlich haftende Gesellschafterin / General Partner: Nokia Siemens Networks Management GmbH
Geschäftsleitung / Board of Directors: Lydia Sommer, Olaf Horsthemke
Vorsitzender des Aufsichtsrats / Chairman of supervisory board: Lauri Kivinen
Sitz der Gesellschaft: München / Registered office: Munich
Registergericht: München / Commercial registry: Munich, HRB 163416</pre>
</body>
</html>