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ujson

package ujson

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Type Members

  1. case class Arr(value: ArrayBuffer[Value]) extends Value with Product with Serializable
  2. trait AstTransformer[I] extends Transformer[I] with JsVisitor[I, I]
  3. final class AsyncParser[J] extends Parser[J] with ByteBasedParser[J]

    AsyncParser is able to parse chunks of data (encoded as Option[ByteBuffer] instances) and parse asynchronously.

    AsyncParser is able to parse chunks of data (encoded as Option[ByteBuffer] instances) and parse asynchronously. You can use the factory methods in the companion object to instantiate an async parser.

    The async parser's fields are described below:

    The (state, curr, stack) triple is used to save and restore parser state between async calls. State also helps encode extra information when streaming or unwrapping an array.

    The (data, len, allocated) triple is used to manage the underlying data the parser is keeping track of. As new data comes in, data may be expanded if not enough space is available.

    The offset parameter is used to drive the outer async parsing. It stores similar information to curr but is kept separate to avoid "corrupting" our snapshot.

    The done parameter is used internally to help figure out when the atEof() parser method should return true. This will be set when apply(None) is called.

    The streamMode parameter controls how the asynchronous parser will be handling multiple values. There are three states:

    1: An array is being unwrapped. Normal JSON array rules apply (Note that if the outer value observed is not an array, this mode will toggle to the -1 mode).

    0: A stream of individual JSON elements separated by whitespace are being parsed. We can return each complete element as we parse it.

    -1: No streaming is occuring. Only a single JSON value is allowed.

  4. class BaseRenderer[T <: Writer] extends JsVisitor[T, T]
  5. sealed abstract class Bool extends Value
  6. final class ByteArrayParser[J] extends SyncParser[J] with ByteBasedParser[J]

    Basic ByteBuffer parser.

    Basic ByteBuffer parser.

    This assumes that the provided ByteBuffer is ready to be read. The user is responsible for any necessary flipping/resetting of the ByteBuffer before parsing.

    The parser makes absolute calls to the ByteBuffer, which will not update its own mutable position fields.

  7. trait ByteBasedParser[J] extends Parser[J]

    Trait used when the data to be parsed is in UTF-8.

    Trait used when the data to be parsed is in UTF-8.

    This parser has to translate input bytes to Chars and Strings. It provides a byte() method to access individual bytes, and also parser strings from bytes.

    Its parseString() implementation has two cases. In the first case (the hot path) the string has no escape sequences and we can just UTF-8 decode the entire set of bytes. In the second case, it goes to some trouble to be sure to de-escape correctly given that the input data is UTF-8.

  8. final class ByteBufferParser[J] extends SyncParser[J] with ByteBasedParser[J]

    Basic ByteBuffer parser.

    Basic ByteBuffer parser.

    This assumes that the provided ByteBuffer is ready to be read. The user is responsible for any necessary flipping/resetting of the ByteBuffer before parsing.

    The parser makes absolute calls to the ByteBuffer, which will not update its own mutable position fields.

  9. case class BytesRenderer(indent: Int = -1, escapeUnicode: Boolean = false) extends BaseRenderer[BytesWriter] with Product with Serializable
  10. final class ChannelParser[J] extends SyncParser[J] with ByteBasedParser[J]

    Basic file parser.

    Basic file parser.

    Given a file name this parser opens it, chunks the data, and parses it.

  11. trait CharBasedParser[J] extends Parser[J]

    Trait used when the data to be parsed is in UTF-16.

    Trait used when the data to be parsed is in UTF-16.

    This parser provides parseString(). Like ByteBasedParser it has fast/slow paths for string parsing depending on whether any escapes are present.

    It is simpler than ByteBasedParser.

  12. case class IncompleteParseException(msg: String, cause: Throwable) extends Exception with ParsingFailedException with Product with Serializable
  13. sealed trait IndexedValue extends AnyRef

    A version of ujson.Value that keeps the index positions of the various AST nodes it is constructing.

    A version of ujson.Value that keeps the index positions of the various AST nodes it is constructing. Usually not necessary, but sometimes useful if you want to work with an AST but still provide source-index error positions if something goes wrong

  14. trait JsVisitor[-T, +J] extends Visitor[T, J]

    A Visitor specialized to work with JSON types.

    A Visitor specialized to work with JSON types. Forwards the not-JSON-related methods to their JSON equivalents.

  15. case class Num(value: Double) extends Value with Product with Serializable
  16. case class Obj(value: LinkedHashMap[String, Value]) extends Value with Product with Serializable
  17. case class ParseException(clue: String, index: Int, line: Int, col: Int) extends Exception with ParsingFailedException with Product with Serializable
  18. abstract class Parser[J] extends AnyRef

    Parser implements a state machine for correctly parsing JSON data.

    Parser implements a state machine for correctly parsing JSON data.

    The trait relies on a small number of methods which are left abstract, and which generalize parsing based on whether the input is in Bytes or Chars, coming from Strings, files, or other input. All methods provided here are protected, so different parsers can choose which functionality to expose.

    Parser is parameterized on J, which is the type of the JSON AST it will return. Jawn can produce any AST for which a Facade[J] is available.

    The parser trait does not hold any state itself, but particular implementations will usually hold state. Parser instances should not be reused between parsing runs.

    For now the parser requires input to be in UTF-8. This requirement may eventually be relaxed.

  19. sealed trait ParsingFailedException extends Exception
  20. trait Readable extends AnyRef
  21. case class Renderer(out: Writer, indent: Int = -1, escapeUnicode: Boolean = false) extends BaseRenderer[Writer] with Product with Serializable
  22. case class Str(value: String) extends Value with Product with Serializable
  23. case class StringRenderer(indent: Int = -1, escapeUnicode: Boolean = false) extends BaseRenderer[StringWriter] with Product with Serializable
  24. abstract class SyncParser[J] extends Parser[J]

    SyncParser extends Parser to do all parsing synchronously.

    SyncParser extends Parser to do all parsing synchronously.

    Most traditional JSON parser are synchronous, and expect to receive all their input before returning. SyncParser[J] still leaves Parser[J]'s methods abstract, but adds a public methods for users to call to actually parse JSON.

  25. trait Transformer[I] extends AnyRef
  26. sealed trait Value extends Readable with Writable
  27. type Js = Value
    Annotations
    @deprecated
    Deprecated

    use ujson.Value

Value Members

  1. def copy(t: ujson.Value.Value): ujson.Value.Value
  2. def read(s: Readable): ujson.Value.Value

    Read the given JSON input as a JSON struct

  3. def reformat(s: Readable, indent: Int = -1, escapeUnicode: Boolean = false): String

    Parse the given JSON input and write it to a string with the configured formatting

  4. def reformatTo(s: Readable, out: Writer, indent: Int = -1, escapeUnicode: Boolean = false): Unit

    Parse the given JSON input and write it to a string with the configured formatting to the given Writer

  5. def transform[T](t: Readable, v: Visitor[_, T]): T
  6. def validate(s: Readable): Unit

    Parse the given JSON input, failing if it is invalid

  7. def write(t: ujson.Value.Value, indent: Int = -1, escapeUnicode: Boolean = false): String

    Write the given JSON struct as a JSON String

  8. def writeTo(t: ujson.Value.Value, out: Writer, indent: Int = -1, escapeUnicode: Boolean = false): Unit

    Write the given JSON struct as a JSON String to the given Writer

  9. object Arr extends Serializable
  10. object AsyncParser
  11. object Bool
  12. object ByteArrayParser extends Transformer[Array[Byte]]
  13. object ByteBufferParser extends Transformer[ByteBuffer]
  14. object BytesRenderer extends Serializable
  15. object ChannelParser extends Transformer[ReadableByteChannel]
  16. object CharSequenceParser extends Transformer[CharSequence]
  17. object False extends Bool with Product with Serializable
  18. object FileParser extends Transformer[File]
  19. object IndexedValue extends Transformer[IndexedValue]
  20. object Null extends Value with Product with Serializable
  21. object Obj extends Serializable
  22. object PathParser extends Transformer[Path]
  23. object Platform
  24. object Readable
  25. object Renderer extends Serializable
  26. object StringParser extends Transformer[String]
  27. object True extends Bool with Product with Serializable
  28. object Value extends AstTransformer[Value]

    A very small, very simple JSON AST that uPickle uses as part of its serialization process.

    A very small, very simple JSON AST that uPickle uses as part of its serialization process. A common standard between the Jawn AST (which we don't use so we don't pull in the bulk of Spire) and the Javascript JSON AST.

Deprecated Value Members

  1. val Js: Value.type
    Annotations
    @deprecated
    Deprecated

    use ujson.Value

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