groovy

Cannot create instances of @Immutable classes that have single Map field

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Major Major
  • Resolution: Fixed
  • Affects Version/s: 1.6-beta-2
  • Fix Version/s: 1.6-rc-1, 1.7-beta-1
  • Component/s: None
  • Labels:
    None
  • Number of attachments :
    0

Description

The call new Foo([:]) below will lead to infinite recursion.

@Immutable final class Foo {
    Map bar
}
new Foo([:])

I guess the above code corresponds to

final class Foo {
    final Map bar
    Foo(Map bar) {
        this(['bar':bar])
    }
    Foo(HashMap args) {
       this.bar = args['bar'].asImmutable()
    }
}
new Foo([:])

It will never reach the termitating HashMap constructor.

Solution1: Generate only tuple-based ctor if single field. Do field initializations in this ctor.

Activity

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Tord Alenljung added a comment -

Workaround: call Map-based ctor (HashMap) explicity

new Foo((HashMap) [bar:[:]])
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Tord Alenljung added a comment - Workaround: call Map-based ctor (HashMap) explicity new Foo((HashMap) [bar:[:]])
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blackdrag blackdrag added a comment -

fixed

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blackdrag blackdrag added a comment - fixed
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Paul King added a comment -

Reopen until we handle HashMap case - seems close enough to original issue that I don't think it warrants another separate issue.

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Paul King added a comment - Reopen until we handle HashMap case - seems close enough to original issue that I don't think it warrants another separate issue.
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Paul King added a comment -

Added a solution for HashMap case. I haven't thought through the order in which initialisation vs special case handling should occur yet. Test still to come

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Paul King added a comment - Added a solution for HashMap case. I haven't thought through the order in which initialisation vs special case handling should occur yet. Test still to come
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Paul King added a comment -

Should be fixed in trunk and 1.6-rc-1

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Paul King added a comment - Should be fixed in trunk and 1.6-rc-1

People

  • Assignee:
    Paul King
    Reporter:
    Tord Alenljung
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Dates

  • Created:
    Updated:
    Resolved: