SARA.hs 2.38 KB
Newer Older
1
2
{-# LANGUAGE OverloadedStrings #-}

3
module Printer.SARA
4
    (printProperties)
5
6
where

7
8
9
import qualified Data.ByteString.Lazy as L
import Data.ByteString.Builder
import Data.Monoid
10
11
12
13
14

import Printer
import PetriNet
import Property

15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
renderSimpleTerm :: Integer -> Term -> Builder
renderSimpleTerm fac (Var x) = if fac == 1 then stringUtf8 x
                               else integerDec fac <> stringUtf8 x
renderSimpleTerm fac (Const c) = integerDec (fac*c)
renderSimpleTerm fac (Const c :*: t) = renderSimpleTerm (fac*c) t
renderSimpleTerm fac (t :*: Const c) = renderSimpleTerm (fac*c) t
renderSimpleTerm fac (Minus t) = renderSimpleTerm (-fac) t
renderSimpleTerm _ t = error $ "term not supported for sara: " <> show t

renderTerm :: Term -> Builder
renderTerm (t :+: u) = renderTerm t <> "+" <> renderSimpleTerm 1 u
renderTerm (t :-: u) = renderTerm t <> "+" <> renderSimpleTerm (-1) u
renderTerm t = renderSimpleTerm 1 t

renderOp :: Op -> Builder
renderOp Ge = ">"
renderOp Eq = ":"
renderOp Le = "<"
renderOp op = error $ "operand not supported for sara: " <> show op

renderLinIneq :: LinearInequation -> Builder
renderLinIneq (LinIneq lhs op (Const c)) =
        renderTerm lhs <> renderOp op <> integerDec c
renderLinIneq l = error $ "linear inequation not supported for sara: " <> show l

renderFormula :: Formula -> Builder
renderFormula (Atom a) = renderLinIneq a
renderFormula (Neg _) = error "negation not supported for sara"
renderFormula (p :&: q) = renderFormula p <> "," <> renderFormula q
renderFormula f = error $ "formula not supported for sara: " <> show f

renderProperty :: String -> PetriNet -> Property -> Builder
renderProperty filename net (Property propname Safety f) =
        "PROBLEM " <> stringUtf8 (validateId propname) <> ":\n" <>
        "GOAL REACHABILITY;\n" <>
        "FILE " <> stringUtf8 (reverse (takeWhile (/='/') (reverse filename)))
            <> " TYPE LOLA;\n" <>
        "INITIAL " <> intercalate ","
            (map (\(p,i) -> stringUtf8 p <> ":" <> integerDec i) (initials net))
            <> ";\n" <>
        "FINAL COVER;\n" <>
        "CONSTRAINTS " <> renderFormula f <> ";"
renderProperty _ _ (Property _ Liveness _) =
58
        error "liveness property not supported for sara"
59
60
61
62
63

printProperties :: String -> PetriNet -> [Property] -> L.ByteString
printProperties filename net props =
        toLazyByteString $ intercalate "\n" $
            map (renderProperty filename net) props