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| 3 |
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| 4 | <head>
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| 5 | <meta http-equiv="Content-Language" content="en-us">
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| 6 | <title>MParse Task</title>
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| 7 | <link rel="stylesheet" type="text/css" href="../stylesheets/antmanual.css">
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| 8 | </head>
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| 9 |
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| 10 | <body>
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| 11 |
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| 12 | <h2><a name="mparse">MParse</a></h2>
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| 13 | <p>by</p>
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| 14 | <ul>
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| 15 | <li>Stephane Bailliez (<a href="mailto:[email protected]">[email protected]</a>)</li>
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| 16 | </ul>
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| 17 | <h3>Requirements</h3>
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| 18 | <p>This task requires Metamata Development environment 2.0 freely available at <a href="http://www.metamata.com">Metamata</a>.</p>
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| 19 | <h3>Description</h3>
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| 20 | <p>
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| 21 | Invokes the Metamata <a HREF="http://www.metamata.com/parse.html">MParse</a> compiler
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| 22 | compiler on a grammar file.
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| 23 | </p>
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| 24 | <p>
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| 25 | To use the <i>mparse</i> task, set the <i>target</i> attribute to the name of the
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| 26 | grammar file to process. You also need to specify the directory containing
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| 27 | the Metamata installation using the <i>metamatahome</i> attribute, so that Ant
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| 28 | can find the MParse classes.
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| 29 | </p>
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| 30 | <p>
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| 31 | This task only invokes MParse if the grammar file is newer than the generated
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| 32 | Java files. MParse assumes that the Java class name of the generated parser
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| 33 | is the same as the name of the grammar file, less the .jj extension.
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| 34 | </p>
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| 35 |
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| 36 | <p>For additional information about MParse, please consult the online manual available <a href="http://download.metamata.com/parse.pdf">here</a>
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| 37 | (PDF)
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| 38 | </p>
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| 39 |
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| 40 | <h3>Parameters</h3>
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| 41 | <table border="1" cellpadding="2" cellspacing="0">
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| 42 | <tr>
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| 43 | <td valign="top"><b>Attribute</b></td>
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| 44 | <td valign="top"><b>Description</b></td>
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| 45 | <td align="center" valign="top"><b>Required</b></td>
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| 46 | </tr>
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| 47 | <tr>
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| 48 | <td valign="top">target</td>
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| 49 | <td valign="top">The .jj grammar file to process. It will only be processed
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| 50 | if the grammar is newer than the corresponding .java file.</td>
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| 51 | <td valign="top" align="center">Yes</td>
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| 52 | </tr>
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| 53 | <tr>
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| 54 | <td valign="top">metamatahome</td>
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| 55 | <td valign="top">The home directory containing the Metamata distribution.</td>
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| 56 | <td valign="top" align="center">Yes</td>
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| 57 | </tr>
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| 58 | <tr>
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| 59 | <td valign="top">verbose</td>
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| 60 | <td valign="top">
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| 61 | Enable all messages
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| 62 | </td>
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| 63 | <td valign="top" align="center">No</td>
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| 64 | </tr>
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| 65 | <tr>
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| 66 | <td valign="top">debugparser</td>
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| 67 | <td valign="top">
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| 68 | Enables parser debugging
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| 69 | </td>
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| 70 | <td valign="top" align="center">No</td>
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| 71 | </tr>
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| 72 | <tr>
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| 73 | <td valign="top">debugscanner</td>
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| 74 | <td valign="top">
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| 75 | Enables scanner debugging
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| 76 | </td>
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| 77 | <td valign="top" align="center">No</td>
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| 78 | </tr>
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| 79 | <tr>
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| 80 | <td valign="top">cleanup</td>
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| 81 | <td valign="top">Remove the intermediate Sun
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| 82 | JavaCC file created during the transformation of the grammar file.</td>
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| 83 | <td valign="top" align="center">No. Default to false</td>
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| 84 | </tr>
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| 85 | <tr>
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| 86 | <td valign="top">maxmemory</td>
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| 87 | <td valign="top">Set the maximum memory for the JVM. this is a convenient
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| 88 | way to set the -mx or -Xmx argument.</td>
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| 89 | <td valign="top" align="center">No</td>
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| 90 | </tr>
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| 91 | </table>
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| 92 | <h3>Nested elements</h3>
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| 93 | <h4>jvmarg</h4>
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| 94 | <p>Additional parameters may be passed to the VM via nested <code><jvmarg></code>
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| 95 | attributes. <code><jvmarg></code> allows all attributes described in <a href="../using.html#arg">Command
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| 96 | line arguments</a>.</p>
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| 97 | <h4>classpath</h4>
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| 98 | <p>Sets class path (also source path unless one explicitly set). Overrides
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| 99 | METAPATH/CLASSPATH environment variables. The <tt>classpath</tt> element represents a <a href="../using.html#path">PATH like
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| 100 | structure</a>.</p>
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| 101 | <h4>sourcepath</h4>
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| 102 | <p>Sets source path. Overrides the SOURCEPATH environment variable. The <tt>sourcepath</tt> element represents a <a href="../using.html#path">PATH like
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| 103 | structure</a>.</p>
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| 104 | <h3>Example</h3>
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| 105 | <pre> <mparse target="c:/metamata/examples/parseexamples/javagrammars/singlefile/JavaParser.jj"
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| 106 | metamatahome="c:/metamata" cleanup="true">
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| 107 | <classpath>
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| 108 | <pathelement location="c:/metamata/examples/"/>
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| 109 | </classpath>
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| 110 | </mparse></pre>
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| 111 | <p>
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| 112 | This invokes Metamata MParse installed in <tt>c:/metamata</tt> on one of the grammar file
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| 113 | example <tt>(JavaParser.jj)</tt>
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| 114 | and cleans up the intermediate Sun JavaCC file.
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| 115 | </p>
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| 116 | <hr>
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| 117 | <p align="center">Copyright © 2001,2004 The Apache Software Foundation. All rights
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| 118 | Reserved.</p>
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| 119 | </body>
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| 120 | </html>
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