This method is called by the parser when a full-context prediction results in an ambiguity.
This method is called when an SLL conflict occurs and the parser is about to use the full context information to make an LL decision.
This method is called by the parser when a full-context prediction has a unique result.
Upon syntax error, notify any interested parties. This is not how to recover from errors or compute error messages. {@link ANTLRErrorStrategy} specifies how to recover from syntax errors and how to compute error messages. This listener's job is simply to emit a computed message, though it has enough information to create its own message in many cases.
How to emit recognition errors.