/
Grammar.pm
37 lines (31 loc) · 878 Bytes
/
Grammar.pm
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
use v6;
grammar JSON::Tiny::Grammar;
token TOP { ^ \s* [ <object> | <array> ] \s* $ }
rule object { '{' ~ '}' <pairlist> }
rule pairlist { <?> <pair> * % \, }
rule pair { <?> <string> ':' <value> }
rule array { '[' ~ ']' <arraylist> }
rule arraylist { <?> <value>* % [ \, ] }
proto token value {*};
token value:sym<number> {
'-'?
[ 0 | <[1..9]> <[0..9]>* ]
[ \. <[0..9]>+ ]?
[ <[eE]> [\+|\-]? <[0..9]>+ ]?
}
token value:sym<true> { <sym> };
token value:sym<false> { <sym> };
token value:sym<null> { <sym> };
token value:sym<object> { <object> };
token value:sym<array> { <array> };
token value:sym<string> { <string> }
token string {
\" ~ \" ( <str> | \\ <str_escape> )*
}
token str {
<-["\\\t\n]>+
}
token str_escape {
<["\\/bfnrt]> | u <xdigit>**4
}
# vim: ft=perl6