Source file method.ml

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type standard =  [
  | `GET
  | `HEAD
  | `POST
  | `PUT
  | `DELETE
  | `CONNECT
  | `OPTIONS
  | `TRACE
]

type t = [
  | standard
  | `Other of string
  ]

let is_safe = function
  | `GET | `HEAD | `OPTIONS | `TRACE -> true
  | _ -> false

let is_cacheable = function
  | `GET | `HEAD | `POST -> true
  | _ -> false

let is_idempotent = function
  | `PUT | `DELETE -> true
  | t -> is_safe t

let to_string = function
  | `GET -> "GET"
  | `HEAD -> "HEAD"
  | `POST -> "POST"
  | `PUT -> "PUT"
  | `DELETE -> "DELETE"
  | `CONNECT -> "CONNECT"
  | `OPTIONS -> "OPTIONS"
  | `TRACE -> "TRACE"
  | `Other s -> s

let of_string =
  function
  | "GET" -> `GET
  | "HEAD" -> `HEAD
  | "POST" -> `POST
  | "PUT" -> `PUT
  | "DELETE" -> `DELETE
  | "CONNECT" -> `CONNECT
  | "OPTIONS" -> `OPTIONS
  | "TRACE" -> `TRACE
  | s -> `Other s

let pp_hum fmt t =
  Format.fprintf fmt "%s" (to_string t)