Documentation

Lean.Meta.Tactic.Util

def Lean.Meta.getMVarTag (mvarId : Lean.MVarId) :

Lean.MetaM Lean.Name

Aka user name

Equations

Lean.Meta.getMVarTag mvarId = do let a ← Lean.Meta.getMVarDecl mvarId pure a.userName

def Lean.Meta.setMVarTag (mvarId : Lean.MVarId) (tag : Lean.Name) :

Lean.MetaM Unit

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def Lean.Meta.appendTag (tag : Lean.Name) (suffix : Lean.Name) :

Equations

Lean.Meta.appendTag tag suffix = Lean.Name.modifyBase tag fun a => a ++ Lean.Name.eraseMacroScopes suffix

def Lean.Meta.appendTagSuffix (mvarId : Lean.MVarId) (suffix : Lean.Name) :

Lean.MetaM Unit

Equations

Lean.Meta.appendTagSuffix mvarId suffix = do let tag ← Lean.Meta.getMVarTag mvarId Lean.Meta.setMVarTag mvarId (Lean.Meta.appendTag tag suffix)

def Lean.Meta.mkFreshExprSyntheticOpaqueMVar (type : Lean.Expr) (tag : optParam Lean.Name Lean.Name.anonymous) :

Lean.MetaM Lean.Expr

Equations

Lean.Meta.mkFreshExprSyntheticOpaqueMVar type tag = Lean.Meta.mkFreshExprMVar (some type) Lean.MetavarKind.syntheticOpaque tag

def Lean.Meta.throwTacticEx {α : Type} (tacticName : Lean.Name) (mvarId : Lean.MVarId) (msg : Lean.MessageData) :

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def Lean.Meta.throwNestedTacticEx {α : Type} (tacticName : Lean.Name) (ex : Lean.Exception) :

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def Lean.Meta.checkNotAssigned (mvarId : Lean.MVarId) (tacticName : Lean.Name) :

Lean.MetaM Unit

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def Lean.Meta.getMVarType (mvarId : Lean.MVarId) :

Lean.MetaM Lean.Expr

Equations

Lean.Meta.getMVarType mvarId = do let a ← Lean.Meta.getMVarDecl mvarId pure a.type

def Lean.Meta.getMVarType' (mvarId : Lean.MVarId) :

Lean.MetaM Lean.Expr

Equations

Lean.Meta.getMVarType' mvarId = do let a ← Lean.Meta.getMVarDecl mvarId let a ← Lean.Meta.instantiateMVars a.type Lean.Meta.whnf a

def Lean.Meta.admit (mvarId : Lean.MVarId) (synthetic : optParam Bool true) :

Lean.MetaM Unit

Assign mvarId to sorryAx

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def Lean.Meta.headBetaMVarType (mvarId : Lean.MVarId) :

Lean.MetaM Unit

Beta reduce the metavariable type head

Equations

Lean.Meta.headBetaMVarType mvarId = do let a ← Lean.Meta.getMVarType mvarId Lean.Meta.setMVarType mvarId (Lean.Expr.headBeta a)

def Lean.Meta.getNondepPropHyps (mvarId : Lean.MVarId) :

Lean.MetaM (Array Lean.FVarId)

Collect nondependent hypotheses that are propositions.

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def Lean.Meta.getNondepPropHyps.removeDeps (e : Lean.Expr) (candidates : Lean.FVarIdHashSet) :

Lean.MetaM Lean.FVarIdHashSet

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def Lean.Meta.saturate (mvarId : Lean.MVarId) (x : Lean.MVarId → Lean.MetaM (Option (List Lean.MVarId))) :

Lean.MetaM (List Lean.MVarId)

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Lean.Meta.saturate mvarId x = do let discr ← StateRefT'.run (Lean.Meta.saturate.go x mvarId) #[] match discr with | (fst, r) => pure (Array.toList r)

partial def Lean.Meta.saturate.go (x : Lean.MVarId → Lean.MetaM (Option (List Lean.MVarId))) (mvarId : Lean.MVarId) :

StateRefT' IO.RealWorld (Array Lean.MVarId) Lean.MetaM Unit

def Lean.Meta.exactlyOne (mvarIds : List Lean.MVarId) (msg : optParam Lean.MessageData (Function.comp Lean.MessageData.ofFormat Lean.format "unexpected number of goals")) :

Lean.MetaM Lean.MVarId

Equations

Lean.Meta.exactlyOne mvarIds msg = match mvarIds with | [mvarId] => pure mvarId | x => Lean.throwError msg

def Lean.Meta.ensureAtMostOne (mvarIds : List Lean.MVarId) (msg : optParam Lean.MessageData (Function.comp Lean.MessageData.ofFormat Lean.format "unexpected number of goals")) :

Lean.MetaM (Option Lean.MVarId)

Equations

Lean.Meta.ensureAtMostOne mvarIds msg = match mvarIds with | [] => pure none | [mvarId] => pure (some mvarId) | x => Lean.throwError msg

def Lean.Meta.getPropHyps:

Lean.MetaM (Array Lean.FVarId)

Return all propositions in the local context.

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inductive Lean.Meta.TacticResultCNM:

Type

closed: Lean.Meta.TacticResultCNM
noChange: Lean.Meta.TacticResultCNM
modified: Lean.MVarId → Lean.Meta.TacticResultCNM