Instances For

    Transform sequence of pushes and appends into acceptable code

    Instances For

      match #

      • unconditional: Lean.Elab.Term.Quotation.HeadCheck

        match step that always succeeds: _, x, `($x), ...

      • shape: List Lean.SyntaxNodeKindOption NatLean.Elab.Term.Quotation.HeadCheck

        match step based on kind and, optionally, arity of discriminant If arity is given, that number of new discriminants is introduced. covered patterns should then introduce the same number of new patterns. We actually check the arity at run time only in the case of null nodes since it should otherwise by implied by the node kind. without arity: `($x:k) with arity: any quotation without an antiquotation head pattern

      • slice: NatNatLean.Elab.Term.Quotation.HeadCheck

        Match step that succeeds on null nodes of arity at least numPrefix + numSuffix, introducing discriminants for the first numPrefix children, one null node for those in between, and for the numSuffix last children. example: ([$x, $xs,*, $y]) is slice 2 2`

      • other: Lean.SyntaxLean.Elab.Term.Quotation.HeadCheck

        other, complicated match step that will probably only cover identical patterns example: antiquotation splices `($[...]*)

      In a single match step, we match the first discriminant against the "head" of the first pattern of the first alternative. This datatype describes what kind of check this involves, which helps other patterns decide if they are covered by the same check and don't have to be checked again (see also MatchResult).

      Instances For

        Describe whether a pattern is covered by a head check (induced by the pattern itself or a different pattern).

        Instances For

          All necessary information on a pattern head.

          Instances For
            @[inline, reducible]
            Instances For