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Add functors (callable attribute sets).

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With this, attribute sets with a `__functor` attribute can be applied
just like normal functions. This can be used to attach arbitrary
metadata to a function without callers needing to treat it specially.
This commit is contained in:
Shea Levy 2014-10-15 22:04:48 -04:00
parent 8cfe939b0f
commit 997defa166
4 changed files with 15 additions and 1 deletions
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tests/lang/eval-okay-callable-attrs.exp Normal file
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true

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tests/lang/eval-okay-callable-attrs.nix Normal file
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({ __functor = self: x: self.foo && x; foo = false; } // { foo = true; }) true