2652cc18b8
This PR standardizes error messages by quoting names with backticks. The changes were automated, so some cases may still be missing.
61 lines
1.8 KiB
Text
61 lines
1.8 KiB
Text
import Lean
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open Lean Elab Meta Tactic
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opaque foo (p : Prop) [Decidable p] : Prop
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class PropClass (n : Nat) : Prop where
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opaque P1 (n : Nat) [PropClass n] : Prop
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class TypeClass (n : Nat) : Type where
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opaque P2 (n : Nat) [TypeClass n] : Prop
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/--
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info: thm for foo: ∀ (p p_1 : Prop), p = p_1 → ∀ {inst : Decidable p} {inst_1 : Decidable p_1}, foo p = foo p_1
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kinds: #[Lean.Meta.CongrArgKind.eq, Lean.Meta.CongrArgKind.subsingletonInst]
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---
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info: thm for P1: ∀ (n n_1 : Nat) (e_n : n = n_1) [inst : PropClass n], P1 n = P1 n_1
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kinds: #[Lean.Meta.CongrArgKind.eq, Lean.Meta.CongrArgKind.cast]
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---
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info: thm for P2: ∀ (n : Nat) [inst : TypeClass n], P2 n = P2 n
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kinds: #[Lean.Meta.CongrArgKind.fixed, Lean.Meta.CongrArgKind.fixed]
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-/
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#guard_msgs in
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run_meta
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#[``foo, ``P1, ``P2].forM fun n => do
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let e ← mkConstWithLevelParams n
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let some thm ← mkCongrSimp? e (subsingletonInstImplicitRhs := false) | throwError "no thm"
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let kinds ← getCongrSimpKinds e (← getFunInfo e)
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logInfo m!"thm for {e}: {thm.type}\nkinds: {repr kinds}"
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example [Decidable p] [Decidable (id p)] (h : foo p) : foo (id p) := by
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conv => arg 1; rw [id]
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exact h
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/--
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error: Failed: `fail` tactic was invoked
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p : Prop
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inst✝ : Decidable p
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⊢ Decidable (id p)
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---
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error: unsolved goals
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p : Prop
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inst✝ : Decidable p
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⊢ foo (id p)
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-/
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#guard_msgs in
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example [Decidable p] : foo p := by
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conv =>
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arg 1
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· rw [← id.eq_def p]
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· tactic => fail
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example [PropClass n] [PropClass (id n)] (h : P1 n) : P1 (id n) := by
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conv => arg 1; rw [id]
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exact h
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example [PropClass n] (h : P1 n) : P1 n := by
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conv => arg 1; rw [← id.eq_def n]
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conv => arg 1; rw [id.eq_def n]
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exact h
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/-- error: `arg` conv tactic failed, cannot select argument -/
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#guard_msgs in
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example [TypeClass n] [TypeClass (id n)] (h : P2 n) : P2 (id n) := by
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conv => arg 1
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