0e49576fe4
This PR makes `#guard_msgs` to treat `trace` messages separate from `info`, `warning` and `error`. It also introduce the ability to say `#guard_msgs (pass info`, like `(drop info)` so far, and also adds `(check info)` as the explicit form of `(info)`, for completeness. Fixes #8266
48 lines
1.2 KiB
Text
48 lines
1.2 KiB
Text
def replicate : (n : Nat) → (a : α) → List α
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| 0, _ => []
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| n+1, a => a :: replicate n a
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/--
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trace: [grind.ematch.pattern] replicate.eq_1: [@replicate #1 `[0] #0]
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[grind.ematch.pattern] replicate.eq_2: [@replicate #2 (#0 + 1) #1]
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-/
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#guard_msgs (trace) in
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set_option trace.grind.ematch.pattern true in
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attribute [grind] replicate
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example : ys = [] → replicate 0 [] = ys := by
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grind only [replicate]
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/--
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error: invalid `grind` parameter, `replicate` is a definition, the only acceptable (and redundant) modifier is '='
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-/
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#guard_msgs (error) in
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example : ys = [] → replicate 0 [] = ys := by
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grind only [←replicate]
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example : ys = [] → replicate 0 [] = ys := by
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fail_if_success grind only
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sorry
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example (ys : List α) : n = 0 → replicate n ys = [] := by
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grind only [replicate]
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example (ys : List α) : n = 0 → List.replicate n ys = [] := by
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grind only [List.replicate]
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opaque foo : Nat → Nat
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opaque bla : Nat → Nat
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theorem foo_bla : foo x = bla x := sorry
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example : foo x = bla x := by
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grind only [_=_ foo_bla]
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@[reducible] def inc (_ : Nat) := 1
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/--
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error: `inc` is a reducible definition, `grind` automatically unfolds them
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-/
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#guard_msgs (error) in
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example : a = 1 → inc x = a := by
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grind [inc]
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