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

Collect unassigned metavariables occuring 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 in occuring the given expression. See collectMVars

Equations

• Lean.Meta.getMVars e = do let __discr ← StateRefT'.run (Lean.Meta.collectMVars e) { 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 => not <$> Lean.MVarId.isDelayedAssigned mvarId) mvarIds 0 (Array.size mvarIds)

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

Equations

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

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

Equations

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