groovy

Curried MethodClosure with default parameters wont work

Details

  • Type: Bug Bug
  • Status: Open Open
  • Priority: Major Major
  • Resolution: Unresolved
  • Affects Version/s: None
  • Fix Version/s: 1.8.x, 2.x
  • Component/s: None
  • Labels:
    None
  • Number of attachments :
    0

Description

As detailed on this thread http://www.nabble.com/Curried-closures-with-default-parameters-td21906130.html
currying a Methodclosure whose original method has default parameters and assigning it to a metaClass means the default parameters are lost, the workaround is to 'manually' curry the closure

class Foo {
   static fooWithDefaults( String a1, String a2, String a3 = a2, Map a4 = [:] ) { /*stuff*/ }
   static decorate( Class klass ) {
      klass.metaclass.foo = this.&fooWithDefaults.curry("A")
   }
}

def f = new Foo()
f.foo("B") // throws MME
f.foo("B","C",[:]) // works

workaround

class Foo {
   static fooWithDefaults( String a1, String a2, String a3 = a2, Map a4 = [:] ) { /*stuff*/ }
   static decorate( Class klass ) {
      klass.metaClass.foo = { String a2, String a3 = a2, Map a4 = [:] ->
         Foo.fooWithDefaults("A",a2,a3,a4)
      }
   }
}

Activity

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blackdrag blackdrag made changes -
Field Original Value New Value
Fix Version/s 1.5.8 [ 14630 ]
Fix Version/s 1.6.1 [ 14852 ]
Component/s Compiler [ 13529 ]
Fix Version/s 1.7-beta-1 [ 14014 ]
Guillaume Laforge made changes -
Fix Version/s 1.6.2 [ 15151 ]
Fix Version/s 1.6.1 [ 14852 ]
Guillaume Laforge made changes -
Fix Version/s 1.5.8 [ 14630 ]
Guillaume Laforge made changes -
Fix Version/s 1.6.3 [ 15251 ]
Fix Version/s 1.6.2 [ 15151 ]
Guillaume Laforge made changes -
Fix Version/s 1.6.3 [ 15251 ]
Guillaume Laforge made changes -
Fix Version/s 1.7-beta-x [ 15538 ]
Fix Version/s 1.7-beta-1 [ 14014 ]
blackdrag blackdrag made changes -
Fix Version/s 1.8.x [ 15750 ]
Fix Version/s 2.x [ 17013 ]
Fix Version/s 1.7.x [ 15538 ]
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Andres Almiray added a comment -

Errors generated by running the 1st script

Caught: groovy.lang.MissingMethodException: No signature of method: Foo.foo() is applicable for argument types: (java.lang.String) values: [B]
Possible solutions: find(), any(), find(groovy.lang.Closure), any(groovy.lang.Closure), use([Ljava.lang.Object;), is(java.lang.Object)
groovy.lang.MissingMethodException: No signature of method: Foo.foo() is applicable for argument types: (java.lang.String) values: [B]
Possible solutions: find(), any(), find(groovy.lang.Closure), any(groovy.lang.Closure), use([Ljava.lang.Object;), is(java.lang.Object)
        at foo.run(foo.groovy:9)
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Andres Almiray added a comment - Errors generated by running the 1st script Caught: groovy.lang.MissingMethodException: No signature of method: Foo.foo() is applicable for argument types: (java.lang. String ) values: [B] Possible solutions: find(), any(), find(groovy.lang.Closure), any(groovy.lang.Closure), use([Ljava.lang. Object ;), is(java.lang. Object ) groovy.lang.MissingMethodException: No signature of method: Foo.foo() is applicable for argument types: (java.lang. String ) values: [B] Possible solutions: find(), any(), find(groovy.lang.Closure), any(groovy.lang.Closure), use([Ljava.lang. Object ;), is(java.lang. Object ) at foo.run(foo.groovy:9)

People

  • Assignee:
    blackdrag blackdrag
    Reporter:
    Andres Almiray
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Dates

  • Created:
    Updated: