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39 lines
1.6 KiB
39 lines
1.6 KiB
(*
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* Copyright (c) 2017-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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(** type of a procedure call; either direct or via function pointer *)
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type call = Direct of Typ.Procname.t | Indirect of AccessExpression.t [@@deriving compare]
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type t =
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| Assign of AccessExpression.t * HilExp.t * Location.t
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(** LHS access expression, RHS expression *)
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| Assume of HilExp.t * [`Then | `Else] * Sil.if_kind * Location.t
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(** Assumed expression, true_branch boolean, source of the assume (conditional, ternary, etc.) *)
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| Call of AccessPath.base * call * HilExp.t list * CallFlags.t * Location.t
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(** Var to hold the return, call expression, formals *)
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[@@deriving compare]
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val pp : F.formatter -> t -> unit
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(** Result of translating an SIL instruction *)
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type translation =
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| Instr of t (** HIL instruction to execute *)
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| Bind of Var.t * AccessExpression.t (** add binding to identifier map *)
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| Unbind of Var.t list (** remove binding from identifier map *)
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| Ignore (** no-op *)
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val of_sil :
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include_array_indexes:bool -> f_resolve_id:(Var.t -> AccessExpression.t option) -> Sil.instr
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-> translation
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(** convert an SIL instruction into an HIL instruction. The [f_resolve_id] function should map an
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SSA temporary variable to the access path it represents. Evaluating the HIL instruction should
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produce the same result as evaluating the SIL instruction and replacing the temporary variables
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using [f_resolve_id]. *)
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