blob: 37004aaa01f5ed31893b804b488cd0bdcd4a689b (
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
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
rl ident_pattern /[a-zA-Z_][a-zA-Z_0-9]*/
rl number_pattern /[0-9]+/
lex start
{
ignore /[ \t\n]+/
token id /ident_pattern/
token number /number_pattern/
literal '<<', '*', ',', '(', ')', '!'
}
global HereId: str
token rest_of_line /[^\n]*'\n'/
lex here_start
{
ignore /[ \t\n]+/
token here_id
HereData: here_data
/ident_pattern/
{
# Take the text of the here_id from the input stream.
HereId = input.pull( match_length )
# Get the data up to the rest of the line.
parse_stop ROL: rest_of_line( input )
# Parse the heredoc data.
parse_stop HereData: here_data( input )
# Push the rest-of-line data back to the input stream.
input.push( $ROL )
# Send the here_id token. Attach the heredoc data as an attribute.
input.push( make_token( typeid<here_id> HereId HereData ) )
}
}
lex here_data
{
token here_close_id
/ ident_pattern '\n' /
{
if match_text == HereId + '\n' {
input.push( make_token(
typeid<here_close_id>
input.pull( match_length ) ) )
}
else
input.push( make_token( typeid<here_line> input.pull(match_length) ) )
}
token here_line
/ [^\n]* '\n' /
}
def here_data
[here_line* here_close_id]
def heredoc
['<<' here_id]
def primary
[id]
| [number]
| [heredoc]
def arglist
[primary arglist_more*]
def arglist_more
[',' primary]
def call
[id '(' arglist? ')']
def statement
[primary]
| [call]
token foobar /any*/
def item
[statement '!']
| [foobar]
def start
[item*]
S: start = parse start( stdin )
print_xml(S)
|
