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I'm trying to build a DSL and using a Global AST Transform to do it. The script is compiling with groovyc fine, but I'd like to be able to be able to have a user use Grab/Grape to pull the JAR and just have it execute right away as a groovy script. I then found that I couldn't do it correctly because there's a parsing error in the script if there isn't a method declaration or import statement after the @Grab call. Here's an example: @Grab(group='mysql', module='mysql-connector-java', version='5.1.6') println "Hello World!" It looks like it should work, but it complains (here's the output the GroovyConsole Script ): startup failed: Script1.groovy: 4: unexpected token: println @ line 4, column 1. println "hello" ^ 1 error Trying different things makes it work, like an import statement: @Grab(group='mysql', module='mysql-connector-java', version='5.1.6') import groovy.lang.Object println "Hello World!"  Or a method declation: @Grab(group='mysql', module='mysql-connector-java', version='5.1.6') def hello() {} println "Hello World!" Is this a bug in the parser?

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