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
|
require "rexml/child"
module REXML
##
# Represents an XML comment; that is, text between <!-- ... -->
class Comment < Child
include Comparable
START = "<!--"
START_RE = /\A<!--/u
STOP = "-->"
PATTERN = /#{START}(.*?)#{STOP}/um
attr_accessor :string # The content text
##
# Constructor. The first argument can be one of three types:
# @param first If String, the contents of this comment are set to the
# argument. If Comment, the argument is duplicated. If
# Source, the argument is scanned for a comment.
# @param second If the first argument is a Source, this argument
# should be nil, not supplied, or a Parent to be set as the parent
# of this object
def initialize( first, second = nil )
super second
if first.kind_of? String
@string = first
elsif first.kind_of? Comment
@string = first.string
elsif first.kind_of? Source
@string = first.match( PATTERN, true )[1]
end
end
def clone
Comment.new self
end
def write( output, indent=0 )
indent( output, indent )
output << START
output << @string
output << STOP
end
alias :to_s :string
##
# Compares this Comment to another; the contents of the comment are used
# in the comparison.
def <=>(other)
other.to_s <=> @string
end
##
# Compares this Comment to another; the contents of the comment are used
# in the comparison.
def ==( other )
other.kind_of? Comment and
(other <=> self) == 0
end
def Comment.parse_stream source, listener
listener.comment(source.match( PATTERN, true )[1])
end
end
end
|
