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
52 lines
1.7 KiB
Text
52 lines
1.7 KiB
Text
import Lean.Meta
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open Lean
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open Lean.Meta
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def print (msg : MessageData) : MetaM Unit := do
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trace[Meta.debug] msg
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def checkM (x : MetaM Bool) : MetaM Unit :=
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unless (← x) do throwError "check failed"
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axiom Ax : forall (α β : Type), α → β → DecidableEq β
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set_option trace.Meta.debug true
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def tst1 : MetaM Unit := do
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let cinfo ← getConstInfo `Ax;
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let (_, _, e) ← forallMetaTelescopeReducing cinfo.type (some 0);
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checkM (pure (!e.hasMVar));
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print e;
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let (_, _, e) ← forallMetaTelescopeReducing cinfo.type (some 1);
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checkM (pure e.hasMVar);
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checkM (pure e.isForall);
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print e;
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let (_, _, e) ← forallMetaTelescopeReducing cinfo.type (some 5);
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checkM (pure e.hasMVar);
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checkM (pure e.isForall);
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print e;
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let (_, _, e) ← forallMetaTelescopeReducing cinfo.type (some 6);
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checkM (pure e.hasMVar);
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checkM (pure (!e.isForall));
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print e;
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let (_, _, e') ← forallMetaTelescopeReducing cinfo.type;
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print e';
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checkM (isDefEq e e');
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forallBoundedTelescope cinfo.type (some 0) $ fun xs body => checkM (pure (xs.size == 0));
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forallBoundedTelescope cinfo.type (some 1) $ fun xs body => checkM (pure (xs.size == 1));
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forallBoundedTelescope cinfo.type (some 6) $ fun xs body => do { print xs; checkM (pure (xs.size == 6)) };
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forallBoundedTelescope cinfo.type (some 10) $ fun xs body => do { print xs; checkM (pure (xs.size == 6)) };
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pure ()
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/--
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trace: [Meta.debug] (α β : Type) → α → β → DecidableEq β
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[Meta.debug] (β : Type) → ?α → β → DecidableEq β
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[Meta.debug] (b : ?β) → Decidable (?a = b)
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[Meta.debug] Decidable (?a = ?b)
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[Meta.debug] Decidable (?a = ?b)
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[Meta.debug] #[α, β, a✝¹, a✝, a, b]
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[Meta.debug] #[α, β, a✝¹, a✝, a, b]
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-/
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#guard_msgs in
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#eval tst1
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