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
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
(* Copyright (c) 2008, Adam Chlipala
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - The names of contributors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*)
structure MonoOpt :> MONO_OPT = struct
open Mono
structure U = MonoUtil
fun typ t = t
fun decl d = d
fun attrifyInt n =
if n < 0 then
"-" ^ Int64.toString (Int64.~ n)
else
Int64.toString n
fun attrifyFloat n =
if n < 0.0 then
"-" ^ Real.toString (Real.~ n)
else
Real.toString n
val attrifyString = String.translate (fn #"\"" => """
| ch => if Char.isPrint ch then
str ch
else
"&#" ^ Int.toString (ord ch) ^ ";")
fun exp e =
case e of
EPrim (Prim.String s) =>
let
val (_, chs) =
CharVector.foldl (fn (ch, (lastSpace, chs)) =>
let
val isSpace = Char.isSpace ch
in
if isSpace andalso lastSpace then
(true, chs)
else
(isSpace, ch :: chs)
end)
(false, []) s
in
EPrim (Prim.String (String.implode (rev chs)))
end
| EStrcat ((EPrim (Prim.String s1), loc), (EPrim (Prim.String s2), _)) =>
let
val s =
if size s1 > 0 andalso size s2 > 0
andalso Char.isSpace (String.sub (s1, size s1 - 1))
andalso Char.isSpace (String.sub (s2, 0)) then
s1 ^ String.extract (s2, 1, NONE)
else
s1 ^ s2
in
EPrim (Prim.String s)
end
| EStrcat ((EPrim (Prim.String s1), loc), (EStrcat ((EPrim (Prim.String s2), _), rest), _)) =>
let
val s =
if size s1 > 0 andalso size s2 > 0
andalso Char.isSpace (String.sub (s1, size s1 - 1))
andalso Char.isSpace (String.sub (s2, 0)) then
s1 ^ String.extract (s2, 1, NONE)
else
s1 ^ s2
in
EStrcat ((EPrim (Prim.String s), loc), rest)
end
| EStrcat ((EStrcat (e1, e2), loc), e3) =>
optExp (EStrcat (e1, (EStrcat (e2, e3), loc)), loc)
| EWrite (EStrcat (e1, e2), loc) =>
ESeq ((optExp (EWrite e1, loc), loc),
(optExp (EWrite e2, loc), loc))
| EFfiApp ("Basis", "attrifyInt", [(EPrim (Prim.Int n), _)]) =>
EPrim (Prim.String (attrifyInt n))
| EWrite (EFfiApp ("Basis", "attrifyInt", [(EPrim (Prim.Int n), _)]), loc) =>
EWrite (EPrim (Prim.String (attrifyInt n)), loc)
| EWrite (EFfiApp ("Basis", "attrifyInt", [e]), _) =>
EFfiApp ("Basis", "attrifyInt_w", [e])
| EFfiApp ("Basis", "attrifyFloat", [(EPrim (Prim.Float n), _)]) =>
EPrim (Prim.String (attrifyFloat n))
| EWrite (EFfiApp ("Basis", "attrifyFloat", [(EPrim (Prim.Float n), _)]), loc) =>
EWrite (EPrim (Prim.String (attrifyFloat n)), loc)
| EWrite (EFfiApp ("Basis", "attrifyFloat", [e]), _) =>
EFfiApp ("Basis", "attrifyFloat_w", [e])
| EFfiApp ("Basis", "attrifyString", [(EPrim (Prim.String s), _)]) =>
EPrim (Prim.String (attrifyString s))
| EWrite (EFfiApp ("Basis", "attrifyString", [(EPrim (Prim.String s), _)]), loc) =>
EWrite (EPrim (Prim.String (attrifyString s)), loc)
| EWrite (EFfiApp ("Basis", "attrifyString", [e]), _) =>
EFfiApp ("Basis", "attrifyString_w", [e])
| _ => e
and optExp e = #1 (U.Exp.map {typ = typ, exp = exp} e)
val optimize = U.File.map {typ = typ, exp = exp, decl = decl}
end
|
