为 try! Swift 优化的 Monadic 解析器组合子。
try
,但请尝试 :)注意:此库仍在早期开发阶段。请参阅 TODO & FIXME。
打开 Examples/TryParsecPlayground.playground
。
$ sudo gem install fastlane
$ fastlane play # prepares Xcode Playground
// Simple Arithmetic
let ans = parseArithmetic(" ( 12 + 3 ) * 4+5").value
expect(ans) == 65
// CSV
let csv = parseCSV("foo,bar,baz\r\n1,22,333\r\n").value
expect(csv) == [["foo", "bar", "baz"], ["1", "22", "333"]]
// XML
let xmlString = "<p class=\"welcome\"><a href=\"underground.html\" target=\"_blank\">Hello</a><?php echo ' Cruel'; ?> World<!-- 💀 --><![CDATA[💣->😇]]></p>"
let xml = parseXML(xmlString).value
expect(xml) == [.Element("p", [XML.Attribute("class", "welcome")], [.Element("a", [XML.Attribute("href", "underground.html"), XML.Attribute("target", "_blank")], [.Text("Hello")]), .ProcessingInstruction("php echo ' Cruel'; "), .Text(" World"), .Comment(" 💀 "), .Text("💣->😇")])]
// JSON
let jsonString = "{ \"string\" : \"hello\", \"array\" : [1, \"two\", [true, null]] }"
let json = parseJSON(jsonString).value
expect(json) == JSON.Object([
"string" : .String("hello"),
"array" : .Array([.Number(1), .String("two"), .Array([.Bool(true), .Null])])
])
import Curry
struct Model: FromJSON, ToJSON
{
let string: String
let array: [Any]?
static func fromJSON(json: JSON) -> Result<Model, JSON.ParseError>
{
return fromJSONObject(json) {
curry(self.init)
<^> $0 !! "string"
<*> $0 !? "array"
}
}
static func toJSON(model: Model) -> JSON
{
return toJSONObject([
"string" ~ model.string,
"array" ~ model.array
])
}
}
let jsonString = "{ \"string\" : \"hello\", \"array\" : [1, \"two\", [true, null]] }"
// JSON String -> Model
let decoded: Result<Model, JSON.ParseError> = decode(jsonString)
// Model -> JSON String
let encoded: String = encode(decoded.value!)
关于更多信息,请查看 thoughtbot/Curry。
>>-
, <^>
, <*>
, *>
, <*
, <|>
, <?>
zeroOrOne
, many
, many1
, manyTill
, skipMany
, skipMany1
, sepBy
, sepBy1
, sepEndBy
, sepEndBy1
, count
, chainl
, chainl1
, chainr
, chainr1
peek
, endOfInput
, satisfy
, skip
, skipWhile
, take
, takeWhile
, any
, char
, not
, string
, asciiCI
, oneOf
, noneOf
, digit
, hexDigit
, lowerAlphabet
, upperAlphabet
, alphabet
, alphaNum
, space
, skipSpaces
, endOfLine
, number
NSJSONSerialization
慢 70 倍(即使在模块级优化的情况下)本库深受以下开发者和库的启发: