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class pub Parser

A DOM parser for turning a stream of bytes into a JSON document.

This parser only supports parsing ByteArray values as input. If you need to parse very large documents, it's best to separate the objects on a per line basis, then parse the document one line at a time.

Nested arrays and objects

This parser enforces a limit on the number of nested arrays and objects. The default is sufficiently large that most documents won't result in an error being thrown. This limit is controlled by the field Parser.max_depth.

Fields

let pub @max_depth: Int

Static methods

fn pub static new[T: Bytes](input: ref T) -> Parser {
  Parser(PullParser.new(input), depth: 0, max_depth: 100)
}

fn pub static new[T: Bytes](input: ref T) -> Parser

Instance methods

fn pub move parse -> Result[Json, Error] {
  let result = try value

  # Only trailing whitespace is allowed.
  match try @pull.peek {
    case Some(val) -> throw @pull.unexpected(val)
    case _ -> {}
  }

  Result.Ok(result)
}

fn pub move parse -> Result[Json, Error]

import std.json (Parser)

let parser = Parser.new('[10, 20]')

parser.parse.get # => Json.Array([Json.Int(10), Json.Int(20)])