partial def Lean.Meta.collectMVars (e : Lean.Expr) : StateRefT' IO.RealWorld Lean.CollectMVars.State Lean.MetaM Unit

Collect unassigned metavariables occurring in the given expression.

Remark: if e contains ?m and there is a t assigned to ?m, we collect unassigned metavariables occurring in t.

Remark: if e contains ?m and ?m is delayed assigned to some term t, we collect ?m and unassigned metavariables occurring in t. We collect ?m because it has not been assigned yet.

def Lean.Meta.getMVars (e : Lean.Expr) : Lean.MetaM (Array Lean.MVarId)

Return metavariables occurring in the given expression. See collectMVars

Equations

• Lean.Meta.getMVars e = do let __discr ← (Lean.Meta.collectMVars e).run { visitedExpr := ∅, result := #[] } match __discr with | (fst, s) => pure s.result

def Lean.Meta.getMVarsNoDelayed (e : Lean.Expr) : Lean.MetaM (Array Lean.MVarId)

Similar to getMVars, but removes delayed assignments.

Equations

• Lean.Meta.getMVarsNoDelayed e = do let mvarIds ← Lean.Meta.getMVars e Array.filterM (fun (mvarId : Lean.MVarId) => not <$> mvarId.isDelayedAssigned) mvarIds

def Lean.Meta.collectMVarsAtDecl (d : Lean.Declaration) : StateRefT' IO.RealWorld Lean.CollectMVars.State Lean.MetaM Unit

Equations

• Lean.Meta.collectMVarsAtDecl d = d.forExprM Lean.Meta.collectMVars

def Lean.Meta.getMVarsAtDecl (d : Lean.Declaration) : Lean.MetaM (Array Lean.MVarId)

Equations

• Lean.Meta.getMVarsAtDecl d = do let __discr ← (Lean.Meta.collectMVarsAtDecl d).run { visitedExpr := ∅, result := #[] } match __discr with | (fst, s) => pure s.result

def Lean.MVarId.getMVarDependencies (mvarId : Lean.MVarId) (includeDelayed : Bool := false) : Lean.MetaM (Std.HashSet Lean.MVarId)

Collect the metavariables which mvarId depends on. These are the metavariables which appear in the type and local context of mvarId, as well as the metavariables which those metavariables depend on, etc.

Equations

• mvarId.getMVarDependencies includeDelayed = (fun (x : Unit × Std.HashSet Lean.MVarId) => x.snd) <$> (Lean.MVarId.getMVarDependencies.go includeDelayed mvarId).run ∅

partial def Lean.MVarId.getMVarDependencies.addMVars (includeDelayed : Bool := false) (e : Lean.Expr) : StateRefT' IO.RealWorld (Std.HashSet Lean.MVarId) Lean.MetaM Unit

Auxiliary definition for getMVarDependencies.

partial def Lean.MVarId.getMVarDependencies.go (includeDelayed : Bool := false) (mvarId : Lean.MVarId) : StateRefT' IO.RealWorld (Std.HashSet Lean.MVarId) Lean.MetaM Unit

Auxiliary definition for getMVarDependencies.