blob: 04a607cc11cc94c02195bb2d694c089435d39acc (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
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
|
----------------------------------------------------------------------
-- |
-- Module : PrExp
-- Maintainer : AR
-- Stability : (stable)
-- Portability : (portable)
--
-- > CVS $Date: 2005/02/18 19:21:07 $
-- > CVS $Author: peb $
-- > CVS $Revision: 1.4 $
--
-- print trees without qualifications
-----------------------------------------------------------------------------
module PrExp (prExp) where
import AbsGFC
import GFC
import Operations
prExp :: Exp -> String
prExp e = case e of
EApp f a -> pr1 f +++ pr2 a
EAbsR x b -> "\\" ++ prtt x +++ "->" +++ prExp b
EAbs x _ b -> prExp $ EAbsR x b
EProd x a b -> "(\\" ++ prtt x +++ ":" +++ prExp a ++ ")" +++ "->" +++ prExp b
EAtomR a -> prAtom a
EAtom a _ -> prAtom a
_ -> prtt e
where
pr1 e = case e of
EAbsR _ _ -> prParenth $ prExp e
EAbs _ _ _ -> prParenth $ prExp e
EProd _ _ _ -> prParenth $ prExp e
_ -> prExp e
pr2 e = case e of
EApp _ _ -> prParenth $ prExp e
_ -> pr1 e
prAtom a = case a of
AC c -> prCIdent c
AD c -> prCIdent c
_ -> prtt a
prCIdent (CIQ _ c) = prtt c
|
