feat: Elementarized tactics with motives, congruence, and absurdity #72

Merged
aniva merged 41 commits from goal/mapply into dev 2024-06-12 13:52:46 -07:00
3 changed files with 61 additions and 11 deletions
Showing only changes of commit bbc00cbbb8 - Show all commits

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@ -76,7 +76,7 @@ private def GoalState.mvars (state: GoalState): SSet MVarId :=
state.mctx.decls.foldl (init := .empty) fun acc k _ => acc.insert k
protected def GoalState.restoreMetaM (state: GoalState): MetaM Unit :=
state.savedState.term.meta.restore
private def GoalState.restoreElabM (state: GoalState): Elab.TermElabM Unit :=
protected def GoalState.restoreElabM (state: GoalState): Elab.TermElabM Unit :=
state.savedState.term.restore
private def GoalState.restoreTacticM (state: GoalState) (goal: MVarId): Elab.Tactic.TacticM Unit := do
state.savedState.restore
@ -518,11 +518,6 @@ protected def GoalState.tryCalc (state: GoalState) (goalId: Nat) (pred: String):
protected def GoalState.tryMotivatedApply (state: GoalState) (goalId: Nat) (recursor: String):
Elab.TermElabM TacticResult := do
state.restoreElabM
let goal ← match state.savedState.tactic.goals.get? goalId with
| .some goal => pure goal
| .none => return .indexError goalId
goal.checkNotAssigned `GoalState.tryMotivatedApply
let recursor ← match Parser.runParserCategory
(env := state.env)
(catName := `term)
@ -534,11 +529,6 @@ protected def GoalState.tryMotivatedApply (state: GoalState) (goalId: Nat) (recu
protected def GoalState.tryNoConfuse (state: GoalState) (goalId: Nat) (eq: String):
Elab.TermElabM TacticResult := do
state.restoreElabM
let goal ← match state.savedState.tactic.goals.get? goalId with
| .some goal => pure goal
| .none => return .indexError goalId
goal.checkNotAssigned `GoalState.tryMotivatedApply
let recursor ← match Parser.runParserCategory
(env := state.env)
(catName := `term)

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@ -204,4 +204,20 @@ def goalMotivatedApply (state: GoalState) (goalId: Nat) (recursor: String): Lean
def goalNoConfuse (state: GoalState) (goalId: Nat) (eq: String): Lean.CoreM TacticResult :=
runTermElabM <| state.tryNoConfuse goalId eq
inductive TacticExecute where
| congruenceArg
| congruenceFun
| congruence
@[export pantograph_goal_tactic_execute_m]
def goalTacticExecute (state: GoalState) (goalId: Nat) (tacticExecute: TacticExecute): Lean.CoreM TacticResult :=
runTermElabM do
state.restoreElabM
let tactic := match tacticExecute with
| .congruenceArg => Tactic.congruenceArg
| .congruenceFun => Tactic.congruenceFun
| .congruence => Tactic.congruence
state.execute goalId tactic
end Pantograph

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@ -27,10 +27,54 @@ def test_congr_arg (env: Environment): IO LSpec.TestSeq :=
])
tests := tests ++ test
return tests
def test_congr_fun (env: Environment): IO LSpec.TestSeq :=
let expr := "λ (n m: Nat) => (n + m) + (n + m) = (n + m) * 2"
runMetaMSeq env do
let expr ← parseSentence expr
Meta.lambdaTelescope expr $ λ _ body => do
let mut tests := LSpec.TestSeq.done
let target ← Meta.mkFreshExprSyntheticOpaqueMVar body
let test ← runTermElabMInMeta do
let newGoals ← runTacticOnMVar Tactic.congruenceFun target.mvarId!
pure $ LSpec.check "goals" ((← newGoals.mapM (λ x => mvarUserNameAndType x)) =
[
(`α, "Sort ?u.159"),
(`f₁, "?α → Nat"),
(`f₂, "?α → Nat"),
(`h, "?f₁ = ?f₂"),
(`a, "?α"),
(`conduit, "(?f₁ ?a = ?f₂ ?a) = (n + m + (n + m) = (n + m) * 2)"),
])
tests := tests ++ test
return tests
def test_congr (env: Environment): IO LSpec.TestSeq :=
let expr := "λ (a b: Nat) => a = b"
runMetaMSeq env do
let expr ← parseSentence expr
Meta.lambdaTelescope expr $ λ _ body => do
let mut tests := LSpec.TestSeq.done
let target ← Meta.mkFreshExprSyntheticOpaqueMVar body
let test ← runTermElabMInMeta do
let newGoals ← runTacticOnMVar Tactic.congruence target.mvarId!
pure $ LSpec.check "goals" ((← newGoals.mapM (λ x => mvarUserNameAndType x)) =
[
(`α, "Sort ?u.10"),
(`f₁, "?α → Nat"),
(`f₂, "?α → Nat"),
(`a₁, "?α"),
(`a₂, "?α"),
(`h₁, "?f₁ = ?f₂"),
(`h₂, "?a₁ = ?a₂"),
(`conduit, "(?f₁ ?a₁ = ?f₂ ?a₂) = (a = b)"),
])
tests := tests ++ test
return tests
def suite (env: Environment): List (String × IO LSpec.TestSeq) :=
[
("congrArg", test_congr_arg env),
("congrFun", test_congr_fun env),
("congr", test_congr env),
]
end Pantograph.Test.Tactic.Congruence