Home My Page Projects Code Snippets Project Openings SML/NJ
Summary Activity Forums Tracker Lists Tasks Docs Surveys News SCM Files

SCM Repository

[smlnj] Annotation of /sml/trunk/src/compiler/FLINT/opt/optutils.sml
ViewVC logotype

Annotation of /sml/trunk/src/compiler/FLINT/opt/optutils.sml

Parent Directory Parent Directory | Revision Log Revision Log


Revision 199 - (view) (download)

1 : monnier 163 (* copyright 1998 YALE FLINT PROJECT *)
2 :     (* monnier@cs.yale.edu *)
3 :    
4 :     signature OPT_UTILS =
5 :     sig
6 :    
7 : monnier 184 datatype ('a,'b) either = A of 'a | B of 'b
8 :    
9 : monnier 163 (* takes the fk of a function and returns the fk of the wrapper
10 :     * along with the new fk of the actual body *)
11 :     val fk_wrap : FLINT.fkind * FLINT.lty list option ->
12 :     (FLINT.fkind * FLINT.fkind)
13 :    
14 :     (* this is a known APL function, but I don't know its real name *)
15 :     val filter : bool list * 'a list -> 'a list
16 : monnier 199
17 :     (* A less brain-dead version of ListPair.all: returns false if
18 :     * length l1 <> length l2 *)
19 :     val ListPair_all : ('a * 'b -> bool) -> 'a list * 'b list -> bool
20 : monnier 163 end
21 :    
22 :     structure OptUtils :> OPT_UTILS =
23 :     struct
24 :     local structure F = FLINT
25 :     structure LK = LtyKernel
26 :     in
27 : monnier 184 datatype ('a,'b) either = A of 'a | B of 'b
28 :    
29 : monnier 163 fun bug msg = ErrorMsg.impossible ("OptUtils: "^msg)
30 :    
31 : monnier 184 fun fk_wrap ({inline,known,isrec,cconv},rtys') =
32 :     let val cconv' =
33 :     case cconv
34 :     of F.CC_FUN(LK.FF_VAR(f1,f2)) => F.CC_FUN(LK.FF_VAR(true, f2))
35 :     | (F.CC_FCT | F.CC_FUN(LK.FF_FIXED)) => cconv
36 :     val isrec' = Option.map (fn ltys => (ltys, F.LK_UNKNOWN)) rtys'
37 :     in ({isrec=isrec, known=known, cconv=cconv, inline=F.IH_ALWAYS},
38 :     {isrec=isrec', known=true, cconv=cconv', inline=inline})
39 : monnier 163 end
40 :    
41 :     fun filter ([],[]) = []
42 :     | filter (true::fs,x::xs) = x::(filter(fs, xs))
43 :     | filter (false::fs,x::xs) = (filter(fs, xs))
44 :     | filter _ = bug "unmatched list length in filter"
45 :    
46 : monnier 199 fun ListPair_all pred =
47 :     let fun allp (a::r1, b::r2) = pred(a, b) andalso allp (r1, r2)
48 :     | allp ([],[]) = true
49 :     | allp _ = false
50 :     in allp
51 :     end
52 :    
53 : monnier 163 end
54 :     end

root@smlnj-gforge.cs.uchicago.edu
ViewVC Help
Powered by ViewVC 1.0.0