Module type ArrayDomain.Str

Abstract domains representing strings a.k.a. null-terminated char arrays.

include S0
include Lattice.S
include Lattice.PO
include Printable.S
type t
val equal : t -> t -> bool
val hash : t -> int
val compare : t -> t -> int
val show : t -> string
val pretty : unit -> t -> Printable.Pretty.doc
val printXml : 'a BatInnerIO.output -> t -> unit
val name : unit -> string
val to_yojson : t -> Yojson.Safe.t
val tag : t -> int

Unique ID, given by HConsed, for context identification in witness

val arbitrary : unit -> t QCheck.arbitrary
val relift : t -> t
val leq : t -> t -> bool
val join : t -> t -> t
val meet : t -> t -> t
val widen : t -> t -> t

widen x y cannot assume leq x y.

val narrow : t -> t -> t
val pretty_diff : unit -> (t * t) -> Lattice.Pretty.doc

If leq x y = false, then pretty_diff () (x, y) should explain why.

include Lattice.Bot with type t := t
val bot : unit -> t
val is_bot : t -> bool
include Lattice.Top with type t := t
val top : unit -> t
val is_top : t -> bool

The abstract domain used to index on arrays.

type value

The abstract domain of values stored in the array.

val set : VDQ.t -> t -> (Basetype.CilExp.t option * idx) -> value -> t

Returns a new abstract value, where the given index is replaced with the * given element.

val make : ?varAttr:GoblintCil.Cil.attributes -> ?typAttr:GoblintCil.Cil.attributes -> SizeDomain.t -> value -> t

make l e creates an abstract representation of an array of length l * containing the element e.

val length : t -> SizeDomain.t option

returns length of array if known

val map : (value -> value) -> t -> t

Apply a function to all elements of the array.

val update_length : SizeDomain.t -> t -> t
type ret =
  1. | Null
  2. | NotNull
  3. | Maybe
type substr =
  1. | IsNotSubstr
  2. | IsSubstrAtIndex0
  3. | IsMaybeSubstr
val get : VDQ.t -> t -> (Basetype.CilExp.t option * idx) -> ret
val to_null_byte_domain : string -> t
val to_string_length : t -> SizeDomain.t

Returns length of string represented by input abstract value

val string_copy : t -> t -> int option -> t

string_copy dest src n returns an abstract value representing the copy of string src * into array dest, taking at most n bytes of src if present

val string_concat : t -> t -> int option -> t

string_concat s1 s2 n returns a new abstract value representing the string * concatenation of the input abstract values s1 and s2, taking at most n bytes of * s2 if present

val substring_extraction : t -> t -> substr

substring_extraction haystack needle returns IsNotSubstr if the string represented by * the abstract value needle surely isn't a substring of haystack, IsSubstrAtIndex0 if * needle is the empty string, else IsMaybeSubstr

val string_comparison : t -> t -> int option -> PreValueDomain.ID.t

string_comparison s1 s2 n returns a negative / positive integer if the string * represented by s1 is less / greater than the one by s2 or zero if they are equal; * only compares the first n bytes if present