!in Operator marked as error

[injecteer]

Using freshly installed Eclipse:

Version: 2023-06 (4.28.0)
Build id: 20230608-1333

and

Eclipse Groovy Development Tools 5.0.0.v202306301519-e2306

with Groovy Compiler Version set to 3.0.18

the code

if( methodNode.code !in BlockStatement ) return false

produces an Error marker:

Needless to say, that the code compiles and runs just fine.

See also the SO question: https://stackoverflow.com/questions/76992821/groovy-eclipse-in-operator-marked-as-error

[eric-milles]

See #1011 and the release notes:

The new antlr4-based Parrot Parser is disabled by default. To enable it, add -Dgroovy.antlr4=true to your eclipse.ini file after the -vmargs line or add a compiler config script to your project with configuration.pluginFactory = org.codehaus.groovy.control.ParserPluginFactory.antlr4(). Please note that parser recovery is not implemented for the Parrot Parser, so your editing experience may be sub-par in this mode.