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https://issues.apache.org/jira/browse/VELOCITY-537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12553243
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Christopher Owen commented on VELOCITY-537:
-------------------------------------------
At Atlassian we're looking to upgrade Confluence to use Velocity 1.5 and I've
just run into this problem as well.
The funny thing is, if you add an argument to the macro definition it then
parses fine. I'd love to dig into the Velocity parser but I'm not that familiar
with the tools used to generate it. We might just have to work around it.
> Multi-line comments causing ParseException in macros in Velocity engine 1.5
> ---------------------------------------------------------------------------
>
> Key: VELOCITY-537
> URL: https://issues.apache.org/jira/browse/VELOCITY-537
> Project: Velocity
> Issue Type: Bug
> Components: Engine
> Affects Versions: 1.5
> Reporter: Christopher Townson
> Fix For: 1.5.1
>
>
> Moving from velocity engine 1.4 to 1.5, one of my macros is now causing a
> ParseException:
> #macro( makeLink $filepath )#*
> *##if ($request.serverName.equalsIgnoreCase("www.liveserver.com") ||
> $request.serverName.equalsIgnoreCase("liveserver.com"))#*
> *##set($mirrorDomain = "livemirror.com")#*
> *##elseif($request.serverName.equalsIgnoreCase("stagingserver.com"))#*
> *##set($mirrorDomain = "stagingmirror.com")#*
> *##elseif($request.serverName.equalsIgnoreCase("devserver.com") ||
> $request.serverName.equalsIgnoreCase("localhost"))#*
> *##set($mirrorDomain = "devmirror.com")#*
> *##else#*
> *##set($mirrorDomain = "liveserver.com")#*
> *##end#*
> *#http://${mirrorDomain}${filepath}#*
> *##end
> This macro uses the mutli-line comment hack to gobble whitespace (so that
> none appears in the link text, whilst preserving some kind of readability.
> This works fine in 1.4, but throws a ParseException in 1.5 (stacktrace below)
> -- stacktrace --
> 2007-04-03 16:05:38,712 - VelocimacroManager.parseTree() : exception makeLink
> org.apache.velocity.runtime.parser.ParseException: Lexical error:
> org.apache.velocity.runtime.parser.TokenMgrError: Lexical error at line 1,
> column 535. Encountered: <EOF> after : ""
> at org.apache.velocity.runtime.parser.Parser.parse(Parser.java:124)
> at
> org.apache.velocity.runtime.RuntimeInstance.parse(RuntimeInstance.java:1042)
> at
> org.apache.velocity.runtime.directive.VelocimacroProxy.parseTree(VelocimacroProxy.java:342)
> at
> org.apache.velocity.runtime.directive.VelocimacroProxy.setupMacro(VelocimacroProxy.java:322)
> at
> org.apache.velocity.runtime.directive.VelocimacroProxy.init(VelocimacroProxy.java:309)
> at
> org.apache.velocity.runtime.parser.node.ASTDirective.init(ASTDirective.java:134)
> at
> org.apache.velocity.runtime.parser.node.SimpleNode.init(SimpleNode.java:285)
> at org.apache.velocity.Template.initDocument(Template.java:199)
> at org.apache.velocity.Template.process(Template.java:121)
> at
> org.apache.velocity.runtime.resource.ResourceManagerImpl.loadResource(ResourceManagerImpl.java:415)
> at
> org.apache.velocity.runtime.resource.ResourceManagerImpl.getResource(ResourceManagerImpl.java:335)
> at
> org.apache.velocity.runtime.RuntimeInstance.getTemplate(RuntimeInstance.java:1102)
> at
> org.apache.velocity.runtime.RuntimeInstance.getTemplate(RuntimeInstance.java:1077)
> at
> org.apache.velocity.app.VelocityEngine.getTemplate(VelocityEngine.java:528)
> at
> org.apache.velocity.tools.view.servlet.VelocityViewServlet.getTemplate(VelocityViewServlet.java:667)
> at
> org.apache.velocity.tools.view.servlet.VelocityViewServlet.handleRequest(VelocityViewServlet.java:601)
> at
> org.apache.velocity.tools.view.servlet.VelocityViewServlet.doRequest(VelocityViewServlet.java:541)
> at
> org.apache.velocity.tools.view.servlet.VelocityViewServlet.doGet(VelocityViewServlet.java:507)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
> at
> org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
> at
> org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
> at
> org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
> at
> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
> at java.lang.Thread.run(Thread.java:595)
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