blob: a9fa89f2e67a5d2c9b2090f7a4c5ed7d41cff70c (
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
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
|
############################################################################
#
# File: stripcom.icn
#
# Subject: Procedures to strip comments from Icon line
#
# Author: Richard L. Goerwitz
#
# Date: March 3, 1996
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# Version: 1.5
#
############################################################################
#
# Strip commented-out portion of a line of Icon code. Fails on lines
# which, either stripped or otherwise, come out as an empty string.
#
############################################################################
#
# BUGS: Can't handle lines ending in an underscore as part of a
# broken string literal, since stripcom is not intended to be used
# on sequentially read files. It simply removes comments from indi-
# vidual lines.
#
############################################################################
# To preserve parallelism between file and procedure names.
procedure stripcom(s)
return strip_comments(s)
end
# The original name -
procedure strip_comments(s)
local i, j, c, c2, s2
s ? {
tab(many(' \t'))
pos(0) & fail
find("#") | (return trim(tab(0),' \t'))
match("#") & fail
(s2 <- tab(find("#"))) ? {
c2 := &null
while tab(upto('\\"\'')) do {
case c := move(1) of {
"\\" : {
if match("^")
then move(2)
else move(1)
}
default: {
if \c2
then (c == c2, c2 := &null)
else c2 := c
}
}
}
/c2
}
return "" ~== trim((\s2 | tab(0)) \ 1, ' \t')
}
end
|
