JsonRewindDecoder

Low-level, unsafe method to decode a value or throw an exception. This method should not be called in application code, although it can be implemented for user-defined data structures.

An alias for JsonDecoder#zipRight.

An alias for JsonDecoder#zipLeft.

An alias for JsonDecoder#zip.

An alias for JsonDecoder#orElseEither.

An alias for JsonDecoder#orElse.

Attempts to decode a value of type A from the specified CharSequence, but may fail with a human-readable error message if the provided text does not encode a value of this type.

Note: This method may not entirely consume the specified character sequence.

Attempts to decode a stream of characters into a single value of type A, but may fail with a human-readable exception if the stream does not encode a value of this type.

Note: This method may not consume the full string.

Attempts to decode a stream of bytes using the user supplied Charset into a single value of type A, but may fail with a human-readable exception if the stream does not encode a value of this type.

Note: This method may not consume the full string.

Decode a value from an already parsed Json AST.

The default implementation encodes the Json to a byte stream and uses decode to parse that. Override to provide a more performant implementation.

Returns a new codec whose decoded values will be mapped by the specified function.

Returns a new codec whose decoded values will be mapped by the specified function, which may itself decide to fail with some type of error.

Returns a new codec that combines this codec and the specified codec using fallback semantics: such that if this codec fails, the specified codec will be tried instead. This method may be unsafe from a security perspective: it can use more memory than hand coded alternative and so lead to DOS.

For example, in the case of an alternative between Int and Boolean, a hand coded alternative would look like:

val decoder: JsonDecoder[AnyVal] = JsonDecoder.peekChar[AnyVal] {
case 't' | 'f' => JsonDecoder[Boolean].widen
case c         => JsonDecoder[Int].widen
}

Returns a new codec that combines this codec and the specified codec using fallback semantics: such that if this codec fails, the specified codec will be tried instead.

Returns this decoder but widened to the its given super-type

Returns a new codec that combines this codec and the specified codec into a single codec that decodes a tuple of the values decoded by the respective codecs.

Zips two codecs, but discards the output on the right hand side.

Zips two codecs, but discards the output on the left hand side.

Zips two codecs into one, transforming the outputs of zip codecs by the specified function.