[
http://jira.codehaus.org/browse/MANTLRTHREE-4?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Silvester Pozarnik closed MANTLRTHREE-4.
----------------------------------------
Resolution: Fixed
The plugin is now aware of grammar interdependencies and process the grammars
in correct order.
> Unable to force the processing sequence of several interdependent grammar
> files
> -------------------------------------------------------------------------------
>
> Key: MANTLRTHREE-4
> URL: http://jira.codehaus.org/browse/MANTLRTHREE-4
> Project: Maven 2.x Antlr3 Plugin
> Issue Type: Bug
> Components: antlr
> Affects Versions: 1.0-beta-1
> Reporter: Silvester Pozarnik
> Assignee: David Holroyd
> Fix For: 1.0-beta-2
>
>
> As from antlr 3.0, you have to have at least two grammar files if you are
> using the tree parser. As the Tree parser usually uses a Token file generated
> by the parser, the tree parser grammar file _must_ be processed after the
> parser file. The implementation of plugin uses a
> SimpleSourceInclusionScanner class in processGrammarFiles() and iterator
> through the set runs completely randomly. We experienced that on WINDOWS it
> runs ok, but on Linux it runs OK when you build the module, but fails due to
> other sorting order if you are using reactor build. The reason for this is
> different relevant paths to grammar files which will generate different hash
> values. If for example your "TreeParser.g3" grammar is dependent on tokens
> generated by compiling the "Parser.g3" file, you should be able to force the
> processing order by calling the plugin as f.ex.:
>
> <plugin>
> <groupId>org.codehaus.mojo</groupId>
> <artifactId>antlr3-maven-plugin</artifactId>
> ...
> <includes>
> <include>**/Parser.g3</include>
> <include>**/TreeParser.g3</include>
> </includes>
> This does not work now, as "TreeParser.g3" may get processed before the
> "Parser.g3".
> The problem is also that even if you get message regarding the missing token
> file (easy to miss) - the build will succeed and you get a strange message(
> ".. expecting token X, got token X..."!?) from antlr tree parser in run time.
> The work around is to run antlr3-maven-plugin in two pases:
> ...
> <executions>
> <execution>
> <id>run-antlr-step1</id>
> <phase>generate-sources</phase> <!-- for "Parser.g3" -->
> ...
> <include>**/Parser.g3</include>
> and
> <execution>
> <id>run-antlr-step2</id>
> <phase>process-sources</phase> <!-- for "TreeParser.g3" -->
> ...
> <include>**/TreeParser.g3</include>
> But this is ugly way of solving the problem.
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