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
|
package examples.parsing
import scala.util.parsing.combinator1.syntactical.StandardTokenParsers
object JSON extends StandardTokenParsers {
lexical.delimiters += ("{", "}", "[", "]", ":", ",")
lexical.reserved += ("null", "true", "false")
def obj : Parser[Any] = "{" ~ repsep(member, ",") ~ "}"
def arr : Parser[Any] = "[" ~ repsep(value, ",") ~ "]"
def member: Parser[Any] = ident ~ ":" ~ value
def value : Parser[Any] = ident | numericLit | obj | arr |
"null" | "true" | "false"
def main(args: Array[String]) {
val tokens = new lexical.Scanner(args(0))
println(args(0))
println(phrase(value)(tokens))
}
}
object JSON1 extends StandardTokenParsers {
lexical.delimiters += ("{", "}", "[", "]", ":", ",")
lexical.reserved += ("null", "true", "false")
def obj: Parser[Map[String, Any]] =
"{" ~> repsep(member, ",") <~ "}" ^^ (Map() ++ _)
def arr: Parser[List[Any]] =
"[" ~> repsep(value, ",") <~ "]"
def member: Parser[(String, Any)] =
ident ~ ":" ~ value ^^ { case name ~ ":" ~ value => (name -> value) }
def value: Parser[Any] =
ident | numericLit ^^ (_.toInt) | obj | arr |
"null" ^^^ null | "true" ^^^ true | "false" ^^^ false
def main(args: Array[String]) {
val tokens = new lexical.Scanner(args(0))
println(args(0))
println(phrase(value)(tokens))
}
}
|
