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Weaken Lattice.Lift{,2}Conf arguments, remove Lattice.LiftPO #1728

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Merged
sim642 merged 4 commits into from
Apr 17, 2025
Merged

Weaken Lattice.Lift{,2}Conf arguments, remove Lattice.LiftPO #1728

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9adcbe9
Weaken Lattice.LiftConf argument, remove Lattice.LiftPO
sim642 Apr 15, 2025
f91d7e9
Weaken Lattice.Lift2Conf arguments
sim642 Apr 15, 2025
b101311
Remove dummy top/bot from DomVariantLattice0
sim642 Apr 16, 2025
30ccf69
Merge branch 'master' into lattice-lift-po
sim642 Apr 17, 2025
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2 changes: 1 addition & 1 deletion src/cdomain/value/cdomains/intDomain0.ml
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Original file line number Diff line number Diff line change
Expand Up @@ -840,7 +840,7 @@ end

module Lift (Base: IkindUnawareS): IkindUnawareS with type t = [ `Bot | `Lifted of Base.t | `Top ] and type int_t = Base.int_t = (* identical to Flat, but does not go to `Top/Bot` if Base raises Unknown/Error *)
struct
include Lattice.LiftPO (struct
include Lattice.LiftConf (struct
include Printable.DefaultConf
let top_name = "MaxInt"
let bot_name = "MinInt"
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76 changes: 6 additions & 70 deletions src/domain/lattice.ml
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Original file line number Diff line number Diff line change
Expand Up @@ -239,7 +239,7 @@ end
module Flat = FlatConf (Printable.DefaultConf)


module LiftConf (Conf: Printable.LiftConf) (Base: S) =
module LiftConf (Conf: Printable.LiftConf) (Base: PO) =
struct
include Printable.LiftConf (Conf) (Base)

Expand Down Expand Up @@ -270,7 +270,7 @@ struct
| (x, `Bot) -> x
| (`Lifted x, `Lifted y) ->
try `Lifted (Base.join x y)
with TopValue -> `Top
with TopValue | Uncomparable -> `Top

let meet x y =
match (x,y) with
Expand All @@ -280,14 +280,14 @@ struct
| (x, `Top) -> x
| (`Lifted x, `Lifted y) ->
try `Lifted (Base.meet x y)
with BotValue -> `Bot
with BotValue | Uncomparable -> `Bot

let widen x y =
match (x,y) with
| (`Lifted x, `Lifted y) ->
begin
try `Lifted (Base.widen x y)
with TopValue -> `Top
with TopValue | Uncomparable -> `Top
end
| _ -> y

Expand All @@ -296,7 +296,7 @@ struct
| (`Lifted x, `Lifted y) ->
begin
try `Lifted (Base.narrow x y)
with BotValue -> `Bot
with BotValue | Uncomparable -> `Bot
end
| (_, `Bot) -> `Bot
| (`Top, y) -> y
Expand All @@ -305,71 +305,7 @@ end

module Lift = LiftConf (Printable.DefaultConf)

module LiftPO (Conf: Printable.LiftConf) (Base: PO) =
struct
include Printable.LiftConf (Conf) (Base)

let bot () = `Bot
let is_bot x = x = `Bot
let top () = `Top
let is_top x = x = `Top

let leq x y =
match (x,y) with
| (_, `Top) -> true
| (`Top, _) -> false
| (`Bot, _) -> true
| (_, `Bot) -> false
| (`Lifted x, `Lifted y) -> Base.leq x y

let pretty_diff () ((x:t),(y:t)): Pretty.doc =
match (x,y) with
| (`Lifted x, `Lifted y) -> Base.pretty_diff () (x,y)
| _ -> if leq x y then Pretty.text "No Changes" else
Pretty.dprintf "%a instead of %a" pretty x pretty y

let join x y =
match (x,y) with
| (`Top, _) -> `Top
| (_, `Top) -> `Top
| (`Bot, x) -> x
| (x, `Bot) -> x
| (`Lifted x, `Lifted y) ->
try `Lifted (Base.join x y)
with Uncomparable | TopValue -> `Top

let meet x y =
match (x,y) with
| (`Bot, _) -> `Bot
| (_, `Bot) -> `Bot
| (`Top, x) -> x
| (x, `Top) -> x
| (`Lifted x, `Lifted y) ->
try `Lifted (Base.meet x y)
with Uncomparable | BotValue -> `Bot

let widen x y =
match (x,y) with
| (`Lifted x, `Lifted y) ->
begin
try `Lifted (Base.widen x y)
with Uncomparable | TopValue -> `Top
end
| _ -> y

let narrow x y =
match (x,y) with
| (`Lifted x, `Lifted y) ->
begin
try `Lifted (Base.narrow x y)
with Uncomparable | BotValue -> `Bot
end
| (_, `Bot) -> `Bot
| (`Top, y) -> y
| _ -> x
end

module Lift2Conf (Conf: Printable.Lift2Conf) (Base1: S) (Base2: S) =
module Lift2Conf (Conf: Printable.Lift2Conf) (Base1: PO) (Base2: PO) =
struct
include Printable.Lift2Conf (Conf) (Base1) (Base2)

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