Hello,
I've run into an issue when trying to remove a mixin from an object. It appears that removing a mixin from an object interacts with the method chaining, such that the "next" isn't invoked.
Here's an example:
Class Mixin1 Mixin1 instproc destroy {args} { puts "Mixin1 1: [my info mixin]" next my mixin delete ::Mixin1 puts "Mixin1 2: [my info mixin]" }
Class Mixin2 Mixin2 instproc destroy {args} { puts "Mixin2 1: [my info mixin]" my mixin delete ::Mixin2 puts "Mixin2 2: [my info mixin]" next }
Class Mixin3 Mixin3 instproc destroy {args} { puts "Mixin3 1: [my info mixin]" my mixin delete ::Mixin3 puts "Mixin3 2: [my info mixin]" next }
Object a
puts "a: [a info mixin]" a mixin set {::Mixin1 ::Mixin2 ::Mixin3} puts "a: [a info mixin]"
a destroy
And the output is
a: a: ::Mixin1 ::Mixin2 ::Mixin3 Mixin1 1: ::Mixin1 ::Mixin2 ::Mixin3 Mixin2 1: ::Mixin1 ::Mixin2 ::Mixin3 Mixin2 2: ::Mixin1 ::Mixin3 Mixin1 2: ::Mixin3
Because Mixin1 invokes "next" before "mixin delete", Mixin2's "destroy" method gets invoked. But since Mixin2 invokes "mixin delete" before "next", Mixin3's "destroy" method is not invoked, despite it remaining in the object's list of mixins.
This is not the behavior I would expect, and I can't find it documented anywhere. Is this the intended behavior? What should I do if I want to remove a mixin and then continue executing chained methods.
Scott
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