1 | <!-- saved from url=(0022)http://internet.e-mail -->
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2 | <html>
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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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