/
Grammar.pm
43 lines (37 loc) · 933 Bytes
/
Grammar.pm
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use v6;
grammar JSON::Tiny::Grammar;
rule TOP { ^[ <object> | <array> ]$ }
rule object { '{' ~ '}' <pairlist> }
rule pairlist { [ <pair> ** [ \, ] ]? }
rule pair { <string> ':' <value> }
rule array { '[' ~ ']' [ <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 {
[
<!before \t>
<!before \n>
<!before \\>
<!before \">
.
]+
# <-["\\\t\n]>+
}
token str_escape {
<["\\/bfnrt]> | u <xdigit>**4
}
# vim: ft=perl6