opaque Lean.Meta.Simp.congrHypothesisExceptionId : InternalExceptionId

def Lean.Meta.Simp.throwCongrHypothesisFailed {α : Type} : MetaM α

Equations

• Lean.Meta.Simp.throwCongrHypothesisFailed = throw (Lean.Exception.internal Lean.Meta.Simp.congrHypothesisExceptionId)

def Lean.Meta.Simp.isOfNatNatLit (e : Expr) : Bool

Return true if e is of the form ofNat n where n is a kernel Nat literal

Equations

• Lean.Meta.Simp.isOfNatNatLit e = (e.isAppOf `OfNat.ofNat && decide (e.getAppNumArgs ≥ 3) && (e.getArg! 1).isRawNatLit)

def Lean.Meta.Simp.foldRawNatLit (e : Expr) : SimpM Expr

If e is a raw Nat literal and OfNat.ofNat is not in the list of declarations to unfold, return an OfNat.ofNat-application.

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def Lean.Meta.Simp.isOfScientificLit (e : Expr) : Bool

Return true if e is of the form ofScientific n b m where n and m are kernel Nat literals.

Equations

• Lean.Meta.Simp.isOfScientificLit e = (e.isAppOfArity `OfScientific.ofScientific 5 && (e.getArg! 4).isRawNatLit && (e.getArg! 2).isRawNatLit)

def Lean.Meta.Simp.isCharLit (e : Expr) : Bool

Return true if e is of the form Char.ofNat n where n is a kernel Nat literals.

Equations

• Lean.Meta.Simp.isCharLit e = (e.isAppOfArity `Char.ofNat 1 && e.appArg!.isRawNatLit)

instance Lean.Meta.Simp.instInhabitedSimpM {α : Type} : Inhabited (SimpM α)

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def Lean.Meta.Simp.lambdaTelescopeDSimp {α : Type} (e : Expr) (k : Array Expr → Expr → SimpM α) : SimpM α

Equations

• Lean.Meta.Simp.lambdaTelescopeDSimp e k = Lean.Meta.Simp.lambdaTelescopeDSimp.go k #[] e

partial def Lean.Meta.Simp.lambdaTelescopeDSimp.go {α : Type} (k : Array Expr → Expr → SimpM α) (xs : Array Expr) (e : Expr) : SimpM α

inductive Lean.Meta.Simp.SimpLetCase : Type

• dep : SimpLetCase
• nondepDepVar : SimpLetCase
• nondep : SimpLetCase

Instances For

• Lean.Meta.Simp.instReprSimpLetCase

instance Lean.Meta.Simp.instReprSimpLetCase : Repr SimpLetCase

Equations

• Lean.Meta.Simp.instReprSimpLetCase = { reprPrec := Lean.Meta.Simp.reprSimpLetCase✝ }

def Lean.Meta.Simp.getSimpLetCase (n : Name) (t b : Expr) : MetaM SimpLetCase

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def Lean.Meta.Simp.withNewLemmas {α : Type} (xs : Array Expr) (f : SimpM α) : SimpM α

We use withNewlemmas whenever updating the local context.

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def Lean.Meta.Simp.simpProj (e : Expr) : SimpM Result

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def Lean.Meta.Simp.simpConst (e : Expr) : SimpM Result

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• Lean.Meta.Simp.simpConst e = do let __do_lift ← Lean.Meta.Simp.reduce✝ e pure { expr := __do_lift }

def Lean.Meta.Simp.simpLambda (e : Expr) : SimpM Result

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def Lean.Meta.Simp.simpArrow (e : Expr) : SimpM Result

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def Lean.Meta.Simp.simpForall (e : Expr) : SimpM Result

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def Lean.Meta.Simp.simpLet (e : Expr) : SimpM Result

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• Lean.Meta.Simp.simpLet e = panicWithPosWithDecl "Lean.Meta.Tactic.Simp.Main" "Lean.Meta.Simp.simpLet" 387 29 "unreachable code has been reached"

def Lean.Meta.Simp.visitFn (e : Expr) : SimpM Result

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def Lean.Meta.Simp.congrDefault (e : Expr) : SimpM Result

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def Lean.Meta.Simp.processCongrHypothesis (h hType : Expr) : SimpM Bool

Process the given congruence theorem hypothesis. Return true if it made "progress".

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def Lean.Meta.Simp.trySimpCongrTheorem? (c : SimpCongrTheorem) (e : Expr) : SimpM (Option Result)

Try to rewrite e children using the given congruence theorem

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def Lean.Meta.Simp.congr (e : Expr) : SimpM Result

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def Lean.Meta.Simp.isNonDepLetFun (e : Expr) : Bool

Returns true if e is of the form @letFun _ (fun _ => β) _ _

β must not contain loose bound variables. Recall that simp does not have support for let_funs where resulting type depends on the let-value. Example:

let_fun n := 10;
BitVec.zero n

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def Lean.Meta.Simp.simpNonDepLetFun (e : Expr) : SimpM Result

Simplifies a sequence of let_fun declarations. It attempts to minimize the quadratic overhead imposed by the locally nameless discipline.

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partial def Lean.Meta.Simp.simpNonDepLetFun.go (cfg : Config) (xs : Array Expr) (e : Expr) : SimpM Lean.Meta.Simp.SimpLetFunResult✝

def Lean.Meta.Simp.simpApp (e : Expr) : SimpM Result

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def Lean.Meta.Simp.simpStep (e : Expr) : SimpM Result

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• Lean.Meta.Simp.simpStep (Lean.Expr.mdata m e_2) = do let r ← Lean.Meta.Simp.simp e_2 pure { expr := Lean.mkMData m r.expr, proof? := r.proof?, cache := r.cache }
• Lean.Meta.Simp.simpStep (Lean.Expr.proj typeName idx struct) = Lean.Meta.Simp.simpProj (Lean.Expr.proj typeName idx struct)
• Lean.Meta.Simp.simpStep (fn.app arg) = Lean.Meta.Simp.simpApp (fn.app arg)
• Lean.Meta.Simp.simpStep (Lean.Expr.lam binderName binderType body binderInfo) = Lean.Meta.Simp.simpLambda (Lean.Expr.lam binderName binderType body binderInfo)
• Lean.Meta.Simp.simpStep (Lean.Expr.forallE binderName binderType body binderInfo) = Lean.Meta.Simp.simpForall (Lean.Expr.forallE binderName binderType body binderInfo)
• Lean.Meta.Simp.simpStep (Lean.Expr.letE declName type value body nonDep) = Lean.Meta.Simp.simpLet (Lean.Expr.letE declName type value body nonDep)
• Lean.Meta.Simp.simpStep (Lean.Expr.const declName us) = Lean.Meta.Simp.simpConst (Lean.Expr.const declName us)
• Lean.Meta.Simp.simpStep (Lean.Expr.bvar deBruijnIndex) = panicWithPosWithDecl "Lean.Meta.Tactic.Simp.Main" "Lean.Meta.Simp.simpStep" 723 20 "unreachable code has been reached"
• Lean.Meta.Simp.simpStep (Lean.Expr.sort u) = pure { expr := Lean.Expr.sort u }
• Lean.Meta.Simp.simpStep (Lean.Expr.lit a) = pure { expr := Lean.Expr.lit a }
• Lean.Meta.Simp.simpStep (Lean.Expr.mvar mvarId) = do let __do_lift ← Lean.instantiateMVars (Lean.Expr.mvar mvarId) pure { expr := __do_lift }

def Lean.Meta.Simp.cacheResult (e : Expr) (cfg : Config) (r : Result) : SimpM Result

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partial def Lean.Meta.Simp.simpLoop (e : Expr) : SimpM Result

partial def Lean.Meta.Simp.simpLoop.visitPreContinue (e : Expr) (cfg : Config) (r : Result) : SimpM Result

partial def Lean.Meta.Simp.simpLoop.visitPost (e : Expr) (cfg : Config) (r : Result) : SimpM Result

partial def Lean.Meta.Simp.simpLoop.visitPostContinue (e : Expr) (cfg : Config) (r : Result) : SimpM Result

@[export lean_simp]

def Lean.Meta.Simp.simpImpl (e : Expr) : SimpM Result

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def Lean.Meta.Simp.simpImpl.go (e : Expr) : SimpM Result

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def Lean.Meta.Simp.main (e : Expr) (ctx : Context) (stats : Stats := { }) (methods : Methods := { }) : MetaM (Result × Stats)

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def Lean.Meta.Simp.main.go (e : Expr) : SimpM Result

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def Lean.Meta.Simp.dsimpMain (e : Expr) (ctx : Context) (stats : Stats := { }) (methods : Methods := { }) : MetaM (Expr × Stats)

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def Lean.Meta.Simp.dsimpMain.go (e : Expr) : SimpM Expr

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def Lean.Meta.simp (e : Expr) (ctx : Simp.Context) (simprocs : Simp.SimprocsArray := #[]) (discharge? : Option Simp.Discharge := none) (stats : Simp.Stats := { }) : MetaM (Simp.Result × Simp.Stats)

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def Lean.Meta.dsimp (e : Expr) (ctx : Simp.Context) (simprocs : Simp.SimprocsArray := #[]) (stats : Simp.Stats := { }) : MetaM (Expr × Simp.Stats)

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def Lean.Meta.simpTargetCore (mvarId : MVarId) (ctx : Simp.Context) (simprocs : Simp.SimprocsArray := #[]) (discharge? : Option Simp.Discharge := none) (mayCloseGoal : Bool := true) (stats : Simp.Stats := { }) : MetaM (Option MVarId × Simp.Stats)

See simpTarget. This method assumes mvarId is not assigned, and we are already using mvarIds local context.

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def Lean.Meta.simpTarget (mvarId : MVarId) (ctx : Simp.Context) (simprocs : Simp.SimprocsArray := #[]) (discharge? : Option Simp.Discharge := none) (mayCloseGoal : Bool := true) (stats : Simp.Stats := { }) : MetaM (Option MVarId × Simp.Stats)

Simplify the given goal target (aka type). Return none if the goal was closed. Return some mvarId' otherwise, where mvarId' is the simplified new goal.

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def Lean.Meta.applySimpResult (mvarId : MVarId) (val type : Expr) (r : Simp.Result) (mayCloseGoal : Bool := true) : MetaM (Option (Expr × Expr))

Applies the result r for type (which is inhabited by val). Returns none if the goal was closed. Returns some (val', type') otherwise, where val' : type' and type' is the simplified type.

This method assumes mvarId is not assigned, and we are already using mvarIds local context.

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@[deprecated Lean.Meta.applySimpResult (since := "2025-03-26")]

def Lean.Meta.applySimpResultToProp (mvarId : MVarId) (proof prop : Expr) (r : Simp.Result) (mayCloseGoal : Bool := true) : MetaM (Option (Expr × Expr))

Equations

• Lean.Meta.applySimpResultToProp mvarId proof prop r mayCloseGoal = Lean.Meta.applySimpResult mvarId proof prop r mayCloseGoal

def Lean.Meta.applySimpResultToFVarId (mvarId : MVarId) (fvarId : FVarId) (r : Simp.Result) (mayCloseGoal : Bool) : MetaM (Option (Expr × Expr))

Equations

• Lean.Meta.applySimpResultToFVarId mvarId fvarId r mayCloseGoal = do let localDecl ← fvarId.getDecl Lean.Meta.applySimpResult mvarId (Lean.mkFVar fvarId) localDecl.type r mayCloseGoal

def Lean.Meta.simpStep (mvarId : MVarId) (proof prop : Expr) (ctx : Simp.Context) (simprocs : Simp.SimprocsArray := #[]) (discharge? : Option Simp.Discharge := none) (mayCloseGoal : Bool := true) (stats : Simp.Stats := { }) : MetaM (Option (Expr × Expr) × Simp.Stats)

Simplify prop (which is inhabited by proof). Return none if the goal was closed. Return some (proof', prop') otherwise, where proof' : prop' and prop' is the simplified prop.

This method assumes mvarId is not assigned, and we are already using mvarIds local context.

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def Lean.Meta.applySimpResultToLocalDeclCore (mvarId : MVarId) (fvarId : FVarId) (r : Option (Expr × Expr)) : MetaM (Option (FVarId × MVarId))

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• Lean.Meta.applySimpResultToLocalDeclCore mvarId fvarId none = pure none

def Lean.Meta.applySimpResultToLocalDecl (mvarId : MVarId) (fvarId : FVarId) (r : Simp.Result) (mayCloseGoal : Bool) : MetaM (Option (FVarId × MVarId))

Simplify simp result to the given local declaration. Return none if the goal was closed. This method assumes mvarId is not assigned, and we are already using mvarIds local context.

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def Lean.Meta.simpLocalDecl (mvarId : MVarId) (fvarId : FVarId) (ctx : Simp.Context) (simprocs : Simp.SimprocsArray := #[]) (discharge? : Option Simp.Discharge := none) (mayCloseGoal : Bool := true) (stats : Simp.Stats := { }) : MetaM (Option (FVarId × MVarId) × Simp.Stats)

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def Lean.Meta.simpGoal (mvarId : MVarId) (ctx : Simp.Context) (simprocs : Simp.SimprocsArray := #[]) (discharge? : Option Simp.Discharge := none) (simplifyTarget : Bool := true) (fvarIdsToSimp : Array FVarId := #[]) (stats : Simp.Stats := { }) : MetaM (Option (Array FVarId × MVarId) × Simp.Stats)

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def Lean.Meta.simpTargetStar (mvarId : MVarId) (ctx : Simp.Context) (simprocs : Simp.SimprocsArray := #[]) (discharge? : Option Simp.Discharge := none) (stats : Simp.Stats := { }) : MetaM (TacticResultCNM × Simp.Stats)

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def Lean.Meta.dsimpGoal (mvarId : MVarId) (ctx : Simp.Context) (simprocs : Simp.SimprocsArray := #[]) (simplifyTarget : Bool := true) (fvarIdsToSimp : Array FVarId := #[]) (stats : Simp.Stats := { }) : MetaM (Option MVarId × Simp.Stats)

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