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76 lines
1.8 KiB
76 lines
1.8 KiB
(*
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* Copyright (c) 2016-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*)
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open! IStd
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module F = Format
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(** Single abstraction for all the kinds of variables in SIL *)
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type t = LogicalVar of Ident.t | ProgramVar of Pvar.t [@@deriving compare]
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let equal = [%compare.equal : t]
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let compare_modulo_this x y =
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match (x, y) with
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| ProgramVar i, ProgramVar j ->
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Pvar.compare_modulo_this i j
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| _, _ ->
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compare x y
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let of_id id = LogicalVar id
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let of_pvar pvar = ProgramVar pvar
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let of_formal_index formal_index = of_id (Ident.create_footprint Ident.name_spec formal_index)
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let to_exp = function ProgramVar pvar -> Exp.Lvar pvar | LogicalVar id -> Exp.Var id
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let is_global = function ProgramVar pvar -> Pvar.is_global pvar | LogicalVar _ -> false
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let is_return = function ProgramVar pvar -> Pvar.is_return pvar | LogicalVar _ -> false
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let is_footprint = function ProgramVar _ -> false | LogicalVar id -> Ident.is_footprint id
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let get_all_vars_in_exp e =
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let acc = Exp.free_vars e |> Sequence.map ~f:of_id in
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Exp.program_vars e |> Sequence.map ~f:of_pvar |> Sequence.append acc
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let appears_in_source_code = function
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| LogicalVar _ ->
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false
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| ProgramVar pvar ->
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not (Pvar.is_frontend_tmp pvar)
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let is_cpp_temporary = function
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| LogicalVar _ ->
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false
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| ProgramVar pvar ->
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Pvar.is_cpp_temporary pvar
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let pp fmt = function
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| ProgramVar pv ->
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F.pp_print_string fmt (Pvar.get_simplified_name pv)
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| LogicalVar id ->
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Ident.pp fmt id
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let get_footprint_index t =
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match t with LogicalVar id when is_footprint t -> Some (Ident.get_stamp id) | _ -> None
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module Map = PrettyPrintable.MakePPMap (struct
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type nonrec t = t
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let compare = compare
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let pp = pp
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end)
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