Christopher Smith created GROOVY-11181:
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Summary: Improve STC error message for non-functional interface
Key: GROOVY-11181
URL: https://issues.apache.org/jira/browse/GROOVY-11181
Project: Groovy
Issue Type: Improvement
Components: Static Type Checker
Affects Versions: 4.0.15
Reporter: Christopher Smith
When the STC decides that a method reference is being provided for a type that
is not a functional interface, it prints the error
{code}
The argument is a method reference, but the parameter type is not a functional
interface
{code}
without specifying what it believes the parameter type _is_. It would be
helpful for troubleshooting to identify the parameter type.
https://github.com/groovy/groovy-eclipse/blob/c2999392e161037435c9479bdb2f71f70a3c0f8b/base/org.codehaus.groovy40/src/org/codehaus/groovy/transform/stc/StaticTypeCheckingVisitor.java#L3665
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