feat: Prograde tactics #83
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|
@ -383,13 +383,13 @@ protected def GoalState.tryMotivatedApply (state: GoalState) (goalId: Nat) (recu
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let recursor ← match (← Compile.parseTermM recursor) with
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| .ok syn => pure syn
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| .error error => return .parseError error
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state.tryTacticM goalId (tacticM := Tactic.motivatedApply recursor)
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state.tryTacticM goalId (tacticM := Tactic.evalMotivatedApply recursor)
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protected def GoalState.tryNoConfuse (state: GoalState) (goalId: Nat) (eq: String):
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Elab.TermElabM TacticResult := do
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state.restoreElabM
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let eq ← match (← Compile.parseTermM eq) with
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| .ok syn => pure syn
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| .error error => return .parseError error
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state.tryTacticM goalId (tacticM := Tactic.noConfuse eq)
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state.tryTacticM goalId (tacticM := Tactic.evalNoConfuse eq)
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end Pantograph
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|
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@ -192,11 +192,5 @@ def goalCalc (state: GoalState) (goalId: Nat) (pred: String): CoreM TacticResult
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@[export pantograph_goal_focus]
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def goalFocus (state: GoalState) (goalId: Nat): Option GoalState :=
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state.focus goalId
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@[export pantograph_goal_motivated_apply_m]
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def goalMotivatedApply (state: GoalState) (goalId: Nat) (recursor: String): CoreM TacticResult :=
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runTermElabM <| state.tryMotivatedApply goalId recursor
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@[export pantograph_goal_no_confuse_m]
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def goalNoConfuse (state: GoalState) (goalId: Nat) (eq: String): CoreM TacticResult :=
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runTermElabM <| state.tryNoConfuse goalId eq
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end Pantograph
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@ -4,82 +4,95 @@ open Lean
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namespace Pantograph.Tactic
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def congruenceArg: Elab.Tactic.TacticM Unit := do
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def congruenceArg (mvarId: MVarId): MetaM (List MVarId) := mvarId.withContext do
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mvarId.checkNotAssigned `Pantograph.Tactic.congruenceArg
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let target ← mvarId.getType
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let .some (β, _, _) := target.eq? | throwError "Goal is not an Eq"
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let userName := (← mvarId.getDecl).userName
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let u ← Meta.mkFreshLevelMVar
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let α ← Meta.mkFreshExprMVar (.some $ mkSort u)
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.natural (userName := userName ++ `α)
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let f ← Meta.mkFreshExprMVar (.some <| .forallE .anonymous α β .default)
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.synthetic (userName := userName ++ `f)
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let a₁ ← Meta.mkFreshExprMVar (.some α)
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.synthetic (userName := userName ++ `a₁)
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let a₂ ← Meta.mkFreshExprMVar (.some α)
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.synthetic (userName := userName ++ `a₂)
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let h ← Meta.mkFreshExprMVar (.some $ ← Meta.mkEq a₁ a₂)
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.synthetic (userName := userName ++ `h)
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let conduitType ← Meta.mkEq (← Meta.mkEq (.app f a₁) (.app f a₂)) target
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let conduit ← Meta.mkFreshExprMVar conduitType
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.synthetic (userName := userName ++ `conduit)
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mvarId.assign $ ← Meta.mkEqMP conduit (← Meta.mkCongrArg f h)
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let result := [α, a₁, a₂, f, h, conduit]
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return result.map (·.mvarId!)
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def evalCongruenceArg: Elab.Tactic.TacticM Unit := do
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let goal ← Elab.Tactic.getMainGoal
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let .some (β, _, _) := (← goal.getType).eq? | throwError "Goal is not an Eq"
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let userName := (← goal.getDecl).userName
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let nextGoals ← congruenceArg goal
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Elab.Tactic.setGoals nextGoals
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let nextGoals ← goal.withContext do
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let u ← Meta.mkFreshLevelMVar
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let α ← Meta.mkFreshExprMVar (.some $ mkSort u)
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.natural (userName := userName ++ `α)
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let f ← Meta.mkFreshExprMVar (.some <| .forallE .anonymous α β .default)
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.synthetic (userName := userName ++ `f)
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let a₁ ← Meta.mkFreshExprMVar (.some α)
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.synthetic (userName := userName ++ `a₁)
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let a₂ ← Meta.mkFreshExprMVar (.some α)
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.synthetic (userName := userName ++ `a₂)
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let h ← Meta.mkFreshExprMVar (.some $ ← Meta.mkEq a₁ a₂)
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.synthetic (userName := userName ++ `h)
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let conduitType ← Meta.mkEq (← Meta.mkEq (.app f a₁) (.app f a₂)) (← goal.getType)
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let conduit ← Meta.mkFreshExprMVar conduitType
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.synthetic (userName := userName ++ `conduit)
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goal.assign $ ← Meta.mkEqMP conduit (← Meta.mkCongrArg f h)
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return [α, a₁, a₂, f, h, conduit]
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Elab.Tactic.setGoals <| nextGoals.map (·.mvarId!)
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def congruenceFun (mvarId: MVarId): MetaM (List MVarId) := mvarId.withContext do
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mvarId.checkNotAssigned `Pantograph.Tactic.congruenceFun
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let target ← mvarId.getType
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let .some (β, _, _) := target.eq? | throwError "Goal is not an Eq"
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let userName := (← mvarId.getDecl).userName
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let u ← Meta.mkFreshLevelMVar
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let α ← Meta.mkFreshExprMVar (.some $ mkSort u)
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.natural (userName := userName ++ `α)
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let fType := .forallE .anonymous α β .default
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let f₁ ← Meta.mkFreshExprMVar (.some fType)
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.synthetic (userName := userName ++ `f₁)
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let f₂ ← Meta.mkFreshExprMVar (.some fType)
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.synthetic (userName := userName ++ `f₂)
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let a ← Meta.mkFreshExprMVar (.some α)
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.synthetic (userName := userName ++ `a)
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let h ← Meta.mkFreshExprMVar (.some $ ← Meta.mkEq f₁ f₂)
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.synthetic (userName := userName ++ `h)
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let conduitType ← Meta.mkEq (← Meta.mkEq (.app f₁ a) (.app f₂ a)) target
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let conduit ← Meta.mkFreshExprMVar conduitType
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.synthetic (userName := userName ++ `conduit)
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mvarId.assign $ ← Meta.mkEqMP conduit (← Meta.mkCongrFun h a)
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let result := [α, f₁, f₂, h, a, conduit]
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return result.map (·.mvarId!)
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def congruenceFun: Elab.Tactic.TacticM Unit := do
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def evalCongruenceFun: Elab.Tactic.TacticM Unit := do
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let goal ← Elab.Tactic.getMainGoal
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let .some (β, _, _) := (← goal.getType).eq? | throwError "Goal is not an Eq"
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let userName := (← goal.getDecl).userName
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let nextGoals ← congruenceFun goal
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Elab.Tactic.setGoals nextGoals
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let nextGoals ← goal.withContext do
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let u ← Meta.mkFreshLevelMVar
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let α ← Meta.mkFreshExprMVar (.some $ mkSort u)
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.natural (userName := userName ++ `α)
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let fType := .forallE .anonymous α β .default
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let f₁ ← Meta.mkFreshExprMVar (.some fType)
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.synthetic (userName := userName ++ `f₁)
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let f₂ ← Meta.mkFreshExprMVar (.some fType)
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.synthetic (userName := userName ++ `f₂)
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let a ← Meta.mkFreshExprMVar (.some α)
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.synthetic (userName := userName ++ `a)
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let h ← Meta.mkFreshExprMVar (.some $ ← Meta.mkEq f₁ f₂)
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.synthetic (userName := userName ++ `h)
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let conduitType ← Meta.mkEq (← Meta.mkEq (.app f₁ a) (.app f₂ a)) (← goal.getType)
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let conduit ← Meta.mkFreshExprMVar conduitType
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.synthetic (userName := userName ++ `conduit)
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goal.assign $ ← Meta.mkEqMP conduit (← Meta.mkCongrFun h a)
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return [α, f₁, f₂, h, a, conduit]
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Elab.Tactic.setGoals <| nextGoals.map (·.mvarId!)
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def congruence (mvarId: MVarId): MetaM (List MVarId) := mvarId.withContext do
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mvarId.checkNotAssigned `Pantograph.Tactic.congruence
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let target ← mvarId.getType
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||||
let .some (β, _, _) := target.eq? | throwError "Goal is not an Eq"
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let userName := (← mvarId.getDecl).userName
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let u ← Meta.mkFreshLevelMVar
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let α ← Meta.mkFreshExprMVar (.some $ mkSort u)
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.natural (userName := userName ++ `α)
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let fType := .forallE .anonymous α β .default
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let f₁ ← Meta.mkFreshExprMVar (.some fType)
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.synthetic (userName := userName ++ `f₁)
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let f₂ ← Meta.mkFreshExprMVar (.some fType)
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.synthetic (userName := userName ++ `f₂)
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let a₁ ← Meta.mkFreshExprMVar (.some α)
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.synthetic (userName := userName ++ `a₁)
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let a₂ ← Meta.mkFreshExprMVar (.some α)
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.synthetic (userName := userName ++ `a₂)
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let h₁ ← Meta.mkFreshExprMVar (.some $ ← Meta.mkEq f₁ f₂)
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.synthetic (userName := userName ++ `h₁)
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let h₂ ← Meta.mkFreshExprMVar (.some $ ← Meta.mkEq a₁ a₂)
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.synthetic (userName := userName ++ `h₂)
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let conduitType ← Meta.mkEq (← Meta.mkEq (.app f₁ a₁) (.app f₂ a₂)) target
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let conduit ← Meta.mkFreshExprMVar conduitType
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.synthetic (userName := userName ++ `conduit)
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mvarId.assign $ ← Meta.mkEqMP conduit (← Meta.mkCongr h₁ h₂)
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let result := [α, f₁, f₂, a₁, a₂, h₁, h₂, conduit]
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return result.map (·.mvarId!)
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def congruence: Elab.Tactic.TacticM Unit := do
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def evalCongruence: Elab.Tactic.TacticM Unit := do
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let goal ← Elab.Tactic.getMainGoal
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let .some (β, _, _) := (← goal.getType).eq? | throwError "Goal is not an Eq"
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let userName := (← goal.getDecl).userName
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let nextGoals ← goal.withContext do
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let u ← Meta.mkFreshLevelMVar
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let α ← Meta.mkFreshExprMVar (.some $ mkSort u)
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.natural (userName := userName ++ `α)
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let fType := .forallE .anonymous α β .default
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let f₁ ← Meta.mkFreshExprMVar (.some fType)
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.synthetic (userName := userName ++ `f₁)
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let f₂ ← Meta.mkFreshExprMVar (.some fType)
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.synthetic (userName := userName ++ `f₂)
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let a₁ ← Meta.mkFreshExprMVar (.some α)
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.synthetic (userName := userName ++ `a₁)
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let a₂ ← Meta.mkFreshExprMVar (.some α)
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.synthetic (userName := userName ++ `a₂)
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let h₁ ← Meta.mkFreshExprMVar (.some $ ← Meta.mkEq f₁ f₂)
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.synthetic (userName := userName ++ `h₁)
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let h₂ ← Meta.mkFreshExprMVar (.some $ ← Meta.mkEq a₁ a₂)
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.synthetic (userName := userName ++ `h₂)
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let conduitType ← Meta.mkEq (← Meta.mkEq (.app f₁ a₁) (.app f₂ a₂)) (← goal.getType)
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let conduit ← Meta.mkFreshExprMVar conduitType
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.synthetic (userName := userName ++ `conduit)
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goal.assign $ ← Meta.mkEqMP conduit (← Meta.mkCongr h₁ h₂)
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return [α, f₁, f₂, a₁, a₂, h₁, h₂, conduit]
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Elab.Tactic.setGoals <| nextGoals.map (·.mvarId!)
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let nextGoals ← congruence goal
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Elab.Tactic.setGoals nextGoals
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end Pantograph.Tactic
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|
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@ -62,44 +62,44 @@ def collectMotiveArguments (forallBody: Expr): SSet Nat :=
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|||
| _ => SSet.empty
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||||
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/-- Applies a symbol of the type `∀ (motive: α → Sort u) (a: α)..., (motive α)` -/
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||||
def motivatedApply: Elab.Tactic.Tactic := λ stx => do
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||||
let goal ← Elab.Tactic.getMainGoal
|
||||
let nextGoals: List MVarId ← goal.withContext do
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||||
let recursor ← Elab.Term.elabTerm (stx := stx) .none
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let recursorType ← Meta.inferType recursor
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def motivatedApply (mvarId: MVarId) (recursor: Expr) : MetaM (List Meta.InductionSubgoal) := mvarId.withContext do
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mvarId.checkNotAssigned `Pantograph.Tactic.motivatedApply
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||||
let recursorType ← Meta.inferType recursor
|
||||
let resultant ← mvarId.getType
|
||||
|
||||
let resultant ← goal.getType
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let info ← match getRecursorInformation recursorType with
|
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| .some info => pure info
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| .none => throwError "Recursor return type does not correspond with the invocation of a motive: {← Meta.ppExpr recursorType}"
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||||
let info ← match getRecursorInformation recursorType with
|
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| .some info => pure info
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||||
| .none => throwError "Recursor return type does not correspond with the invocation of a motive: {← Meta.ppExpr recursorType}"
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||||
let rec go (i: Nat) (prev: Array Expr): MetaM (Array Expr) := do
|
||||
if i ≥ info.nArgs then
|
||||
return prev
|
||||
else
|
||||
let argType := info.args.get! i
|
||||
-- If `argType` has motive references, its goal needs to be placed in it
|
||||
let argType := argType.instantiateRev prev
|
||||
let bvarIndex := info.nArgs - i - 1
|
||||
let argGoal ← if bvarIndex = info.iMotive then
|
||||
let surrogateMotiveType ← info.surrogateMotiveType prev resultant
|
||||
Meta.mkFreshExprMVar surrogateMotiveType .syntheticOpaque (userName := `motive)
|
||||
else
|
||||
Meta.mkFreshExprMVar argType .syntheticOpaque (userName := .anonymous)
|
||||
let prev := prev ++ [argGoal]
|
||||
go (i + 1) prev
|
||||
termination_by info.nArgs - i
|
||||
let mut newMVars ← go 0 #[]
|
||||
|
||||
let rec go (i: Nat) (prev: Array Expr): MetaM (Array Expr) := do
|
||||
if i ≥ info.nArgs then
|
||||
return prev
|
||||
else
|
||||
let argType := info.args.get! i
|
||||
-- If `argType` has motive references, its goal needs to be placed in it
|
||||
let argType := argType.instantiateRev prev
|
||||
let bvarIndex := info.nArgs - i - 1
|
||||
let argGoal ← if bvarIndex = info.iMotive then
|
||||
let surrogateMotiveType ← info.surrogateMotiveType prev resultant
|
||||
Meta.mkFreshExprMVar surrogateMotiveType .syntheticOpaque (userName := `motive)
|
||||
else
|
||||
Meta.mkFreshExprMVar argType .syntheticOpaque (userName := .anonymous)
|
||||
let prev := prev ++ [argGoal]
|
||||
go (i + 1) prev
|
||||
termination_by info.nArgs - i
|
||||
let mut newMVars ← go 0 #[]
|
||||
-- Create the conduit type which proves the result of the motive is equal to the goal
|
||||
let conduitType ← info.conduitType newMVars resultant
|
||||
let goalConduit ← Meta.mkFreshExprMVar conduitType .natural (userName := `conduit)
|
||||
mvarId.assign $ ← Meta.mkEqMP goalConduit (mkAppN recursor newMVars)
|
||||
newMVars := newMVars ++ [goalConduit]
|
||||
|
||||
-- Create the conduit type which proves the result of the motive is equal to the goal
|
||||
let conduitType ← info.conduitType newMVars resultant
|
||||
let goalConduit ← Meta.mkFreshExprMVar conduitType .natural (userName := `conduit)
|
||||
goal.assign $ ← Meta.mkEqMP goalConduit (mkAppN recursor newMVars)
|
||||
newMVars := newMVars ++ [goalConduit]
|
||||
return newMVars.toList.map (λ mvar => { mvarId := mvar.mvarId!})
|
||||
|
||||
let nextGoals := newMVars.toList.map (·.mvarId!)
|
||||
pure nextGoals
|
||||
Elab.Tactic.setGoals nextGoals
|
||||
def evalMotivatedApply : Elab.Tactic.Tactic := fun stx => Elab.Tactic.withMainContext do
|
||||
let recursor ← Elab.Term.elabTerm (stx := stx) .none
|
||||
let nextGoals ← motivatedApply (← Elab.Tactic.getMainGoal) recursor
|
||||
Elab.Tactic.setGoals $ nextGoals.map (·.mvarId)
|
||||
|
||||
end Pantograph.Tactic
|
||||
|
|
|
|||
|
|
@ -4,15 +4,19 @@ open Lean
|
|||
|
||||
namespace Pantograph.Tactic
|
||||
|
||||
def noConfuse: Elab.Tactic.Tactic := λ stx => do
|
||||
let goal ← Elab.Tactic.getMainGoal
|
||||
goal.withContext do
|
||||
let absurd ← Elab.Term.elabTerm (stx := stx) .none
|
||||
let noConfusion ← Meta.mkNoConfusion (target := ← goal.getType) (h := absurd)
|
||||
def noConfuse (mvarId: MVarId) (h: Expr): MetaM Unit := mvarId.withContext do
|
||||
mvarId.checkNotAssigned `Pantograph.Tactic.noConfuse
|
||||
let target ← mvarId.getType
|
||||
let noConfusion ← Meta.mkNoConfusion (target := target) (h := h)
|
||||
|
||||
unless ← Meta.isDefEq (← Meta.inferType noConfusion) (← goal.getType) do
|
||||
throwError "invalid noConfuse call: The resultant type {← Meta.ppExpr $ ← Meta.inferType noConfusion} cannot be unified with {← Meta.ppExpr $ ← goal.getType}"
|
||||
goal.assign noConfusion
|
||||
unless ← Meta.isDefEq (← Meta.inferType noConfusion) target do
|
||||
throwError "invalid noConfuse call: The resultant type {← Meta.ppExpr $ ← Meta.inferType noConfusion} cannot be unified with {← Meta.ppExpr target}"
|
||||
mvarId.assign noConfusion
|
||||
|
||||
def evalNoConfuse: Elab.Tactic.Tactic := λ stx => do
|
||||
let goal ← Elab.Tactic.getMainGoal
|
||||
let h ← goal.withContext $ Elab.Term.elabTerm (stx := stx) .none
|
||||
noConfuse goal h
|
||||
Elab.Tactic.setGoals []
|
||||
|
||||
end Pantograph.Tactic
|
||||
|
|
|
|||
|
|
@ -12,7 +12,7 @@ def test_congr_arg_list : TestT Elab.TermElabM Unit := do
|
|||
let expr ← parseSentence expr
|
||||
Meta.lambdaTelescope expr $ λ _ body => do
|
||||
let target ← Meta.mkFreshExprSyntheticOpaqueMVar body
|
||||
let newGoals ← runTacticOnMVar Tactic.congruenceArg target.mvarId!
|
||||
let newGoals ← runTacticOnMVar Tactic.evalCongruenceArg target.mvarId!
|
||||
addTest $ LSpec.check "goals" ((← newGoals.mapM (λ x => mvarUserNameAndType x)) =
|
||||
[
|
||||
(`α, "Sort ?u.30"),
|
||||
|
|
@ -34,7 +34,7 @@ def test_congr_arg : TestT Elab.TermElabM Unit := do
|
|||
let expr ← parseSentence expr
|
||||
Meta.lambdaTelescope expr $ λ _ body => do
|
||||
let target ← Meta.mkFreshExprSyntheticOpaqueMVar body
|
||||
let newGoals ← runTacticOnMVar Tactic.congruenceArg target.mvarId!
|
||||
let newGoals ← runTacticOnMVar Tactic.evalCongruenceArg target.mvarId!
|
||||
addTest $ LSpec.check "goals" ((← newGoals.mapM (λ x => mvarUserNameAndType x)) =
|
||||
[
|
||||
(`α, "Sort ?u.70"),
|
||||
|
|
@ -49,7 +49,7 @@ def test_congr_fun : TestT Elab.TermElabM Unit := do
|
|||
let expr ← parseSentence expr
|
||||
Meta.lambdaTelescope expr $ λ _ body => do
|
||||
let target ← Meta.mkFreshExprSyntheticOpaqueMVar body
|
||||
let newGoals ← runTacticOnMVar Tactic.congruenceFun target.mvarId!
|
||||
let newGoals ← runTacticOnMVar Tactic.evalCongruenceFun target.mvarId!
|
||||
addTest $ LSpec.check "goals" ((← newGoals.mapM (λ x => mvarUserNameAndType x)) =
|
||||
[
|
||||
(`α, "Sort ?u.159"),
|
||||
|
|
@ -64,7 +64,7 @@ def test_congr : TestT Elab.TermElabM Unit := do
|
|||
let expr ← parseSentence expr
|
||||
Meta.lambdaTelescope expr $ λ _ body => do
|
||||
let target ← Meta.mkFreshExprSyntheticOpaqueMVar body
|
||||
let newGoals ← runTacticOnMVar Tactic.congruence target.mvarId!
|
||||
let newGoals ← runTacticOnMVar Tactic.evalCongruence target.mvarId!
|
||||
addTest $ LSpec.check "goals" ((← newGoals.mapM (λ x => mvarUserNameAndType x)) =
|
||||
[
|
||||
(`α, "Sort ?u.10"),
|
||||
|
|
|
|||
|
|
@ -33,7 +33,7 @@ def test_nat_brec_on : TestT Elab.TermElabM Unit := do
|
|||
| .error error => throwError "Failed to parse: {error}"
|
||||
-- Apply the tactic
|
||||
let target ← Meta.mkFreshExprSyntheticOpaqueMVar body
|
||||
let tactic := Tactic.motivatedApply recursor
|
||||
let tactic := Tactic.evalMotivatedApply recursor
|
||||
let newGoals ← runTacticOnMVar tactic target.mvarId!
|
||||
let test := LSpec.check "goals" ((← newGoals.mapM (λ g => do exprToStr (← g.getType))) =
|
||||
[
|
||||
|
|
@ -57,7 +57,7 @@ def test_list_brec_on : TestT Elab.TermElabM Unit := do
|
|||
| .error error => throwError "Failed to parse: {error}"
|
||||
-- Apply the tactic
|
||||
let target ← Meta.mkFreshExprSyntheticOpaqueMVar body
|
||||
let tactic := Tactic.motivatedApply recursor
|
||||
let tactic := Tactic.evalMotivatedApply recursor
|
||||
let newGoals ← runTacticOnMVar tactic target.mvarId!
|
||||
addTest $ LSpec.check "goals" ((← newGoals.mapM (λ g => do exprToStr (← g.getType))) =
|
||||
[
|
||||
|
|
@ -81,7 +81,7 @@ def test_partial_motive_instantiation : TestT Elab.TermElabM Unit := do
|
|||
Meta.lambdaTelescope expr $ λ _ body => do
|
||||
-- Apply the tactic
|
||||
let target ← Meta.mkFreshExprSyntheticOpaqueMVar body
|
||||
let tactic := Tactic.motivatedApply recursor
|
||||
let tactic := Tactic.evalMotivatedApply recursor
|
||||
let newGoals ← runTacticOnMVar tactic target.mvarId!
|
||||
let majorId := 67
|
||||
addTest $ (LSpec.check "goals" ((← newGoals.mapM (λ g => do exprToStr (← g.getType))) =
|
||||
|
|
|
|||
|
|
@ -20,7 +20,7 @@ def test_nat : TestT Elab.TermElabM Unit := do
|
|||
| .error error => throwError "Failed to parse: {error}"
|
||||
-- Apply the tactic
|
||||
let target ← Meta.mkFreshExprSyntheticOpaqueMVar body
|
||||
let tactic := Tactic.noConfuse recursor
|
||||
let tactic := Tactic.evalNoConfuse recursor
|
||||
let newGoals ← runTacticOnMVar tactic target.mvarId!
|
||||
addTest $ LSpec.check "goals" ((← newGoals.mapM (λ g => do exprToStr (← g.getType))) = [])
|
||||
|
||||
|
|
@ -38,7 +38,7 @@ def test_nat_fail : TestT Elab.TermElabM Unit := do
|
|||
-- Apply the tactic
|
||||
let target ← Meta.mkFreshExprSyntheticOpaqueMVar body
|
||||
try
|
||||
let tactic := Tactic.noConfuse recursor
|
||||
let tactic := Tactic.evalNoConfuse recursor
|
||||
let _ ← runTacticOnMVar tactic target.mvarId!
|
||||
addTest $ assertUnreachable "Tactic should fail"
|
||||
catch _ =>
|
||||
|
|
@ -57,7 +57,7 @@ def test_list : TestT Elab.TermElabM Unit := do
|
|||
| .error error => throwError "Failed to parse: {error}"
|
||||
-- Apply the tactic
|
||||
let target ← Meta.mkFreshExprSyntheticOpaqueMVar body
|
||||
let tactic := Tactic.noConfuse recursor
|
||||
let tactic := Tactic.evalNoConfuse recursor
|
||||
let newGoals ← runTacticOnMVar tactic target.mvarId!
|
||||
addTest $ LSpec.check "goals"
|
||||
((← newGoals.mapM (λ g => do exprToStr (← g.getType))) = [])
|
||||
|
|
|
|||
Loading…
Reference in New Issue