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https://issues.apache.org/jira/browse/GROOVY-9408?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Sun closed GROOVY-9408.
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Resolution: Fixed
> Avoid unnecessary looking up default import classes when resolving types
> ------------------------------------------------------------------------
>
> Key: GROOVY-9408
> URL: https://issues.apache.org/jira/browse/GROOVY-9408
> Project: Groovy
> Issue Type: Improvement
> Reporter: Daniel Sun
> Assignee: Daniel Sun
> Priority: Major
> Fix For: 4.0.0-alpha-1, 3.0.2
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> {{ResolveVisitor}} will try to look up default imported classes from these
> packages {{"java.lang.", "java.util.", "java.io.", "java.net.",
> "groovy.lang.", "groovy.util."}}.
> For example, when compiler finds {{Closure}} in the AST, it will try to look
> up {{"java.util.Closure"}}, if failed, then {{"java.io.Clousre"}}, ..., at
> last look up {{"groovy.lang.Closure"}}.
> As we can see, some of the above looking up is not necessary, we can avoid
> them by warming up
> {{org.codehaus.groovy.control.ResolveVisitor#DEFAULT_IMPORT_CLASS_AND_PACKAGES_CACHE}}
>
> P.S. warming up the cache costs about 0.226s on my machine
>
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