JsonSinkProcessor<Reader extends JsonReader, Sink extends JsonSink> class base

A generalized JSON processor which forwards data to a JSON sink.

Allows individual process methods to be overridden for special behavior, like detecting specific keys and treating values differently, or detecting specific values and parsing them differently.

The default behavior of the process-methods is to call JsonSink.addKey if the key is non-null, then expect a value and call the sink's corresponding add method with the value. Example:

  void processString(Reader reader, String? key) {
    if (key != null) sink.addKey(key);
    sink.addString(reader.expectString());
  }

If overridden, the overriding method should make sure to call addKey on the sink first when the key is non-null, if it intends to add any value (and not add the key if it intends to skip the value).

Inheritance

Constructors

JsonSinkProcessor(Sink sink)
Creat a JSON processor forwarding events to sink.

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
sink → Sink
The target sink.
final

Methods

endArray(String? key) → void
Called when an array has no more elements.
override
endObject(String? key) → void
Called after all key/value pairs of the current object are processed.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
processArray(Reader reader, String? key) → bool
Called when the reader encounters a JSON array.
override
processBool(Reader reader, String? key) → void
Called when the next value is a boolean value.
override
processNull(Reader reader, String? key) → void
Called when the next value is a null value.
override
processNum(Reader reader, String? key) → void
Called when the next value is a number value.
override
processObject(Reader reader, String? key) → bool
Called when the reader encounters the start of a JSON object.
override
processObjectEntry(Reader reader) → void
Called for each JSON object entry.
inherited
processString(Reader reader, String? key) → void
Called when the next value is a string value.
override
processUnknown(Reader reader, String? key) → void
Invoked for a reader which has no value or an unrecognized value.
inherited
processValue(Reader reader, [String? key]) → void
Process a JSON-value.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited