A single frame of the parser call stack
An internal mirror of the Result classes, except it contains far more data and is mutable to maximize performance
Things which get passed through the entire parse run, but almost never get changed in the process.
A single, self-contained, immutable parser.
Convenience methods to be used internally inside Parsers
Something which contains an operator precedence, which can be used to correctly wrap other things which contain lower precedences in parentheses when stringifying.
Result of a parse, whether successful or failed
All the level of operator precedence in Scala