This commit is contained in:
Dmitry Boulytchev 2018-03-14 23:26:52 +03:00
parent 1a33860560
commit f10cdcf2e8
2 changed files with 4 additions and 40 deletions

View file

@ -77,26 +77,7 @@ module Expr =
*)
ostap (
parse:
!(Ostap.Util.expr
(fun x -> x)
(Array.map (fun (a, s) -> a,
List.map (fun s -> ostap(- $(s)), (fun x y -> Binop (s, x, y))) s
)
[|
`Lefta, ["!!"];
`Lefta, ["&&"];
`Nona , ["=="; "!="; "<="; "<"; ">="; ">"];
`Lefta, ["+" ; "-"];
`Lefta, ["*" ; "/"; "%"];
|]
)
primary);
primary:
n:DECIMAL {Const n}
| x:IDENT {Var x}
| -"(" parse -")"
parse: empty {failwith "Not yet implemented"}
)
end
@ -130,13 +111,7 @@ module Stmt =
(* Statement parser *)
ostap (
parse:
s:stmt ";" ss:parse {Seq (s, ss)}
| stmt;
stmt:
"read" "(" x:IDENT ")" {Read x}
| "write" "(" e:!(Expr.parse) ")" {Write e}
| x:IDENT ":=" e:!(Expr.parse) {Assign (x, e)}
parse: empty {failwith "Not yet implemented"}
)
end