Scott Murphy Heiberg created GROOVY-12627:
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Summary: Writing a property of the enclosing instance from a
closure in an inner class throws MissingPropertyException unless the receiver
is a plain this
Key: GROOVY-12627
URL: https://issues.apache.org/jira/browse/GROOVY-12627
Project: Groovy
Issue Type: Bug
Affects Versions: 6.0.0
Reporter: Scott Murphy Heiberg
{code:groovy}
class Base {
private String z = 'outer'
class Sub extends Base {
def m() { { -> Sub.this.z = 'w' }(); Base.this.z }
}
def t() { new Sub().m() }
}
assert new Base().t() == 'w'
{code}
Actual: groovy.lang.MissingPropertyException: No such property: z for class:
Base$Sub
Expected: 'w'. The write goes to the enclosing instance, as this.z = 'w' in the
closure does, as Sub.this.z = 'w' outside the closure does, and as reading
Sub.this.z in the closure does. Groovy 4.0.33, 5.0.8 and 5.1.3 return 'w'.
The same happens for s.z = 'w' with def s = this (also under @TypeChecked), for
compound assignment and ++, for nested closures and lambdas, for a non-subclass
inner class (Inner.this.z = 'w'), and for a spread-dot read or write in a
closure.
A call site in a closure passes the closure class as the sender. The
enclosing-instance fallback that GROOVY-11823 added to MetaClassImpl checks the
nesting of that closure class rather than of the class that declares the
closure, so it never applies there.
Seen in 6.0.0 (regression); 4.0.33, 5.0.8 and 5.1.3 work.
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