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| <title>JavaCC Task</title> |
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| <h2><a name="javacc">JavaCC</a></h2> |
| <h3>Description</h3> |
| <p> |
| Invokes the <a HREF="http://www.webgain.com/products/java_cc/" target="_top">JavaCC</a> compiler |
| compiler on a grammar file. |
| </p> |
| <p> |
| To use the javacc task, set the <i>target</i> attribute to the name of the |
| grammar file to process. You also need to specify the directory containing |
| the JavaCC installation using the <i>javacchome</i> attribute, so that ant |
| can find the JavaCC classes. Optionally, you can also set the |
| <i>outputdirectory</i> to write the generated file to a specific directory. |
| Otherwise javacc writes the generated files to the directory containing |
| the grammar file. |
| </p> |
| <p> |
| This task only invokes JavaCC if the grammar file is newer than the generated |
| Java files. javacc assumes that the Java class name of the generated parser |
| is the same as the name of the grammar file, ignoring the .jj. |
| If this is not the case, the javacc task will still work, but it will always |
| generate the output files. |
| </p> |
| |
| <h3>Parameters</h3> |
| <table border="1" cellpadding="2" cellspacing="0"> |
| <tr> |
| <td valign="top"><b>Attribute</b></td> |
| <td valign="top"><b>Description</b></td> |
| <td align="center" valign="top"><b>Required</b></td> |
| </tr> |
| <tr> |
| <td valign="top">target</td> |
| <td valign="top">The grammar file to process.</td> |
| <td valign="top" align="center">Yes</td> |
| </tr> |
| <tr> |
| <td valign="top">javacchome</td> |
| <td valign="top">The directory containing the JavaCC distribution.</td> |
| <td valign="top" align="center">Yes</td> |
| </tr> |
| <tr> |
| <td valign="top">outputdirectory</td> |
| <td valign="top"> |
| The directory to write the generated files to. If not set, the files |
| are written to the directory containing the grammar file. |
| </td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">buildparser</td> |
| <td valign="top">Sets the BUILD_PARSER grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">buildtokenmanager</td> |
| <td valign="top">Sets the BUILD_TOKEN_MANAGER grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">cachetokens</td> |
| <td valign="top">Sets the CACHE_TOKENS grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">choiceambiguitycheck</td> |
| <td valign="top">Sets the CHOICE_AMBIGUITY_CHECK grammar option. This is an integer option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">commontokenaction</td> |
| <td valign="top">Sets the COMMON_TOKEN_ACTION grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">debuglookahead</td> |
| <td valign="top">Sets the DEBUG_LOOKAHEAD grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">debugparser</td> |
| <td valign="top">Sets the DEBUG_PARSER grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">debugtokenmanager</td> |
| <td valign="top">Sets the DEBUG_TOKEN_MANAGER grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">errorreporting</td> |
| <td valign="top">Sets the ERROR_REPORTING grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">forcelacheck</td> |
| <td valign="top">Sets the FORCE_LA_CHECK grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">ignorecase</td> |
| <td valign="top">Sets the IGNORE_CASE grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">javaunicodeescape</td> |
| <td valign="top">Sets the JAVA_UNICODE_ESCAPE grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">lookahead</td> |
| <td valign="top">Sets the LOOKAHEAD grammar option. This is an integer option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">optimizetokenmanager</td> |
| <td valign="top">Sets the OPTIMIZE_TOKEN_MANAGER grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">otherambiguitycheck</td> |
| <td valign="top">Sets the OTHER_AMBIGUITY_CHECK grammar option. This is an integer option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">sanitycheck</td> |
| <td valign="top">Sets the SANITY_CHECK grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">static</td> |
| <td valign="top">Sets the STATIC grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">unicodeinput</td> |
| <td valign="top">Sets the UNICODE_INPUT grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">usercharstream</td> |
| <td valign="top">Sets the USER_CHAR_STREAM grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| <tr> |
| <td valign="top">usertokenmanager</td> |
| <td valign="top">Sets the USER_TOKEN_MANAGER grammar option. This is a boolean option.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| </table> |
| <h3>Example</h3> |
| <blockquote><pre> |
| <javacc |
| target="src/Parser.jj" |
| outputdirectory="build/src" |
| javacchome="c:/program files/JavaCC" |
| static="true" |
| /> |
| </pre></blockquote> |
| <p> |
| This invokes JavaCC on grammar file src/Parser.jj, writing the generated |
| files to build/src. The grammar option STATIC is set to true when |
| invoking JavaCC. |
| </p> |
| <hr> |
| |
| <p align="center">Copyright © 2001 Apache Software Foundation. |
| All rights |
| Reserved.</p> |
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