c801a9e8cf
This PR modifies the pretty printing of anonymous metavariables to use the index rather than the internal name. This leads to smaller numerical suffixes in `?m.123` since the indices are numbered within a given metavariable context rather than across an entire file, hence each command gets its own numbering. This does not yet affect pretty printing of universe level metavariables. For debugging purposes, metavariables that are not defined now pretty print as `?_mvar.123` rather than cause pretty printing to fail.
156 lines
2.9 KiB
Text
156 lines
2.9 KiB
Text
import Lean.Elab.BuiltinNotation
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import Lean.Meta.Basic
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/-!
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# Testing `pp.mvars`
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-/
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open Lean Meta
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/-!
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Default values
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-/
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/-- info: ?a : Nat -/
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#guard_msgs in #check (?a : Nat)
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/-- trace: ⊢ Sort ?u.1 -/
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#guard_msgs (trace, drop all) in
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example : (by_elab do return .sort (.mvar (.mk (.num `_uniq 1)))) := by
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trace_state
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sorry
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/-!
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No such mvar, pretty print using the mvarid rather than the index.
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-/
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/-- info: ?_mvar.222222 -/
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#guard_msgs in #eval do
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let e := Expr.mvar (.mk (.num `_uniq 222222))
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logInfo m!"{e}"
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/-!
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Turning off `pp.mvars`
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-/
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section
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set_option pp.mvars false
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/-- info: ?_ : Nat -/
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#guard_msgs in #check (?a : Nat)
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/-- info: ?_ : Nat -/
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#guard_msgs in #check (_ : Nat)
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/-- trace: ⊢ Sort _ -/
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#guard_msgs (trace, drop all) in
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example : (by_elab do return .sort (.mvar (.mk (.num `_uniq 1)))) := by
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trace_state
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sorry
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/-- trace: ⊢ Type _ -/
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#guard_msgs (trace, drop all) in
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example : Type _ := by
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trace_state
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sorry
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end
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/-!
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Turning off `pp.mvars.levels`
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-/
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section
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set_option pp.mvars.levels false
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/-- info: ?a : Nat -/
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#guard_msgs in #check (?a : Nat)
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/-- info: ?m.1 : Nat -/
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#guard_msgs in #check (_ : Nat)
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/-- trace: ⊢ Sort _ -/
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#guard_msgs (trace, drop all) in
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example : (by_elab do return .sort (.mvar (.mk (.num `_uniq 1)))) := by
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trace_state
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sorry
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/-- trace: ⊢ Type _ -/
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#guard_msgs (trace, drop all) in
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example : Type _ := by
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trace_state
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sorry
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end
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/-!
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Turning off `pp.mvars.anonymous`
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-/
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section
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set_option pp.mvars.anonymous false
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/-- info: ?a : Nat -/
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#guard_msgs in #check (?a : Nat)
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/-- info: ?_ : Nat -/
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#guard_msgs in #check by_elab do
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-- Control the mvarId with something that's too big to happen naturally:
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let mvarId : MVarId := .mk (.num `_uniq 222222222)
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let lctx ← getLCtx
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let type := mkConst ``Nat
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Lean.MonadMCtx.modifyMCtx fun mctx => mctx.addExprMVarDecl mvarId .anonymous lctx {} type .natural 0
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return .mvar mvarId
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/-- trace: ⊢ Sort _ -/
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#guard_msgs (trace, drop all) in
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example : (by_elab do return .sort (.mvar (.mk (.num `_uniq 1)))) := by
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trace_state
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sorry
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/-- trace: ⊢ Type _ -/
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#guard_msgs (trace, drop all) in
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example : Type _ := by
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trace_state
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sorry
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end
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/-!
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Turning off `pp.mvars` and turning on `pp.mvars.withType`.
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-/
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section
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set_option pp.mvars false
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set_option pp.mvars.withType true
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/-- info: (?_ : Nat) : Nat -/
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#guard_msgs in #check (?a : Nat)
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/-- info: (?_ : Nat) : Nat -/
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#guard_msgs in #check (_ : Nat)
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end
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/-!
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Turning on `pp.mvars.withType`.
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-/
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section
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set_option pp.mvars.withType true
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/-- info: (?a : Nat) : Nat -/
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#guard_msgs in #check (?a : Nat)
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end
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/-!
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Delayed assignment metavariables respecting `pp.mvars.anonymous`
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-/
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section
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set_option pp.mvars.anonymous false
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/-- info: fun x => ?a : (x : Nat) → ?_ x -/
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#guard_msgs in #check fun _ : Nat => ?a
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set_option pp.mvars.delayed true
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/-- info: fun x => ?_ x : (x : Nat) → ?_ x -/
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#guard_msgs in #check fun _ : Nat => ?a
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end
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