b5122b6a7b
This change * moves `termination_by` and `decreasing_by` next to the function they apply to * simplify the syntax of `termination_by` * apply the `decreasing_by` goal to all goals at once, for better interactive use. See the section in `RELEASES.md` for more details and migration advise. This is a hard breaking change, requiring developers to touch every `termination_by` in their code base. We decided to still do it as a hard-breaking change, because supporting both old and new syntax at the same time would be non-trivial, and not save that much. Moreover, this requires changes to some metaprograms that developers might have written, and supporting both syntaxes at the same time would make _their_ migration harder.
17 lines
318 B
Text
17 lines
318 B
Text
def FunType := Nat → Nat
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def Fun2Type := Nat → Nat → Nat
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mutual
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def foo : FunType
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| .zero => 0
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| .succ n => bar n
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termination_by n => n
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def bar : Nat → Nat
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| .zero => 0
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| .succ n => baz n 0
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termination_by n => n
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def baz : Fun2Type
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| .zero, m => 0
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| .succ n, m => foo n
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termination_by n _ => n
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end
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