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https://github.com/leanprover/lean4.git
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08eb78a5b2
This PR sets up the new integrated test/bench suite. It then migrates all benchmarks and some related tests to the new suite. There's also some documentation and some linting. For now, a lot of the old tests are left alone so this PR doesn't become even larger than it already is. Eventually, all tests should be migrated to the new suite though so there isn't a confusing mix of two systems.
109 lines
2.0 KiB
Lean4
109 lines
2.0 KiB
Lean4
/-!
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# Tests of delaborator 'safe shadowing' feature
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-/
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set_option linter.unusedVariables false
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def f (x x : Nat) :=
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match x with
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| 0 => x + 1
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| Nat.succ _ => x + 2
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def f' :=
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fun (x : Nat) => id fun (x : Nat) =>
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match x with
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| 0 => x + 1
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| Nat.succ _ => x + 2
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variable {α : Type}
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/-- info: fun a => a : α → α -/
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#guard_msgs in
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#check fun (a : α) => a
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/-- info: fun {α} a => a : {α : Sort u_1} → α → α -/
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#guard_msgs in
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#check fun {α} (a : α) => a
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/-!
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This would be safe shadowing, but since it's in the same `fun` it is confusing to have repeated variable names.
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-/
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/-- info: fun x x_1 => x_1 : Nat → Nat → Nat -/
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#guard_msgs in
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#check fun (x x : Nat) => x
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/-!
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Splitting up the `fun`, safe shadowing applies again.
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-/
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/-- info: fun x => id fun x => x : Nat → Nat → Nat -/
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#guard_msgs in
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#check fun (x : Nat) => id fun (x : Nat) => x
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/-!
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Same lambda, no safe shadowing.
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-/
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/--
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info: def f : Nat → Nat → Nat :=
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fun x x_1 =>
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match x_1 with
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| 0 => x_1 + 1
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| n.succ => x_1 + 2
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-/
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#guard_msgs in
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#print f
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/-!
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Split up lambda, uses safe shadowing.
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-/
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/--
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info: def f' : Nat → Nat → Nat :=
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fun x =>
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id fun x =>
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match x with
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| 0 => x + 1
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| n.succ => x + 2
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-/
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#guard_msgs in
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#print f'
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/-!
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The within-same-fun safe shadowing suppression does not take outer `let` into account.
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-/
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/--
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info: let x := 1;
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fun x x_1 => x_1 : Nat → Nat → Nat
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-/
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#guard_msgs in
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#check let x := 1; fun (x x : Nat) => x
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set_option pp.safeShadowing false
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/-- info: fun {α_1} a => a : {α_1 : Sort u_1} → α_1 → α_1 -/
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#guard_msgs in
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#check fun {α} (a : α) => a
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/-- info: fun x x_1 => x_1 : Nat → Nat → Nat -/
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#guard_msgs in
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#check fun (x x : Nat) => x
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/--
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info: def f : Nat → Nat → Nat :=
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fun x x_1 =>
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match x_1 with
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| 0 => x_1 + 1
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| n.succ => x_1 + 2
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-/
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#guard_msgs in
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#print f
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/--
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info: def f' : Nat → Nat → Nat :=
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fun x =>
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id fun x_1 =>
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match x_1 with
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| 0 => x_1 + 1
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| n.succ => x_1 + 2
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-/
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#guard_msgs in
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#print f'
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