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parse arrays

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This commit is contained in:
joshvera 2015-10-16 14:52:03 -04:00
parent 0628142d8b
commit e7fa851420
1 changed files with 19 additions and 6 deletions
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25
prototype/doubt-json/main.swift
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@ -165,18 +165,28 @@ func members(json: JSONParser) -> MembersParser {
<* whitespace
<*> separatedPairs
let zero: MembersParser = pure([])
return oneOrMore
<|> zero
return oneOrMore <|> pure([])
}
typealias ValuesParser = Parser<String, [CofreeJSON]>.Function;
func elements(json: JSONParser) -> ValuesParser {
let value: Parser<String, CofreeJSON>.Function = whitespace *> json <* whitespace
let separatedValues: ValuesParser = (%"," *> whitespace *> value <* whitespace)*
let oneOrMore: ValuesParser = curry { [$0] + $1 } <^>
value
<* whitespace
<*> separatedValues
return oneOrMore <|> pure([])
}
let json: JSONParser = fix { json in
// TODO: Parse backslashed escape characters
let string: JSONParser = quoted --> { Cofree($1, .Leaf(.String($2))) }
let array: JSONParser = %"["
*> whitespace
*> json* <* %"]" --> { Cofree($1, .Indexed($2)) }
let array: JSONParser = %"[" *> elements(json) <* %"]" --> { Cofree($1, .Indexed($2)) }
let dict: JSONParser =
%"{"
@ -204,6 +214,9 @@ print(parse(json, input: dictWithSpaces))
let dictWithMembers = "{\"hello\":\"world\",\"sup\":\"cat\"}"
print(parse(json, input: dictWithMembers))
let dictWithArray = "{\"hello\": [\"world\"],\"sup\": [\"cat\", \"dog\", \"keith\"] }"
print(parse(json, input: dictWithArray))
//if let a = arguments[1].flatMap(JSON.init), b = arguments[2].flatMap(JSON.init) {
// let diff = Algorithm<Term, Diff>(a.term, b.term).evaluate(Cofree.equals(annotation: const(true), leaf: ==))
// if let JSON = NSString(data: diff.JSON(ifPure: { $0.JSON { $0.JSON } }, ifLeaf: { $0.JSON }).serialize(), encoding: NSUTF8StringEncoding) {