22b5c957e9
Given a definition `foo`, they were previously called `foo._unfold` until 4.7.0. We tried to rename them to `foo.def`, but it created too many issues in the Mathlib repo. We decided to rename it again to `foo.eq_def`. The new name is also consistent with the `eq_<idx>` theorems generated for different "cases". That is, `foo.eq_def` is the equality theorem for the whole definition, and `foo.eq_<idx>` is the equality theorem for case `<idx>`. cc @semorrison
46 lines
927 B
Text
46 lines
927 B
Text
import Lean
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open Lean
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open Lean.Meta
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def tst (declName : Name) : MetaM Unit := do
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IO.println (← getUnfoldEqnFor? declName)
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def foo (xs ys zs : List Nat) : List Nat :=
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match (xs, ys) with
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| (xs', ys') =>
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match zs with
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| z::zs => foo xs ys zs
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| _ => match ys' with
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| [] => [1]
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| _ => [2]
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#eval tst ``foo
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/--
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info: foo.eq_def (xs ys zs : List Nat) :
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foo xs ys zs =
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match (xs, ys) with
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| (xs', ys') =>
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match zs with
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| z :: zs => foo xs ys zs
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| x =>
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match ys' with
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| [] => [1]
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| x => [2]
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-/
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#guard_msgs in
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#check foo.eq_def
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def bar (xs ys : List Nat) : List Nat :=
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match xs ++ [], ys ++ [] with
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| xs', ys' => xs' ++ ys'
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/--
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info: def bar : List Nat → List Nat → List Nat :=
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fun xs ys =>
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match xs ++ [], ys ++ [] with
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| xs', ys' => xs' ++ ys'
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-/
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#guard_msgs in
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#print bar -- should not contain either `let _discr` aux binding
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