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(*
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* Copyright (c) 2017 - present Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*)
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open! IStd
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module F = Format
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type t =
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| AccessPath of AccessPath.Raw.t (** access path (e.g., x.f.g or x[i]) *)
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| UnaryOperator of Unop.t * t * Typ.t option
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(** Unary operator with type of the result if known *)
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| BinaryOperator of Binop.t * t * t (** Binary operator *)
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| Exception of t (** Exception *)
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| Closure of Typ.Procname.t * (AccessPath.base * t) list (** Name of function + environment *)
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| Constant of Const.t (** Constants *)
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| Cast of Typ.t * t (** Type cast *)
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| Sizeof of Typ.t * t option
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(** C-style sizeof(), and also used to treate a type as an expression. Refer to [Exp] module for
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canonical documentation *)
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[@@deriving compare]
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val pp : F.formatter -> t -> unit
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val get_typ : Tenv.t -> t -> Typ.t option
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(** Get the type of the expression. Warning: not fully implemented *)
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val of_sil : f_resolve_id:(Var.t -> AccessPath.Raw.t option) -> Exp.t -> Typ.t -> t
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(** Convert SIL expression to HIL expression *)
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val get_access_paths : t -> AccessPath.Raw.t list
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(** Get all the access paths used in the given HIL expression, including duplicates if a path is
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used more than once. *)
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val is_null_literal : t -> bool
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