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The JSON Parser example lives in the org.parboiled.examples.json package and shows a complete JSON Parser built with parboiled for Scala.
It builds an AST representation of the parsed JSON source and exercises many of parboileds features. As such it is a very good starting point for your own parboiled for Scala project.
The three contained Scala classes contain the following parser versions:
|JsonParser0||Basic recognizer grammar without any actions|
|JsonParser1||Full JSON parser with actions building an AST|
|JsonParser2||Same as JsonParser1 but with most types being made explicit (rather than inferred), worth a look if JsonParser1 is unclear|