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A method where certain grammar rules are assigned precedence or priority to resolve ambiguities or conflicts, potentially reducing the likelihood of errors.

Performs local corrections on the remaining input in order to allow the parser to continue.

Grammar rules specifically designed to handle common errors, allowing the parser to recognize incorrect constructs during parsing.

The parser reverts to a previous state and tries a different rule or path if a dead end is reached, often used in recursive descent parsers.

A limited form of backtracking that only reverts to selected points in the parse, reducing the overhead of full backtracking.

Special tokens introduced into the grammar which can be substituted for a range of invalid input sequences.

Skips input symbols until a designated set of synchronizing tokens (often a statement delimiter like a semicolon) is found.