— Scheme Syntax: lalr-parser [options] tokens rules...

Generate an LALR(1) syntax analyzer. tokens is a list of symbols representing the terminal symbols of the grammar. rules are the grammar production rules.

Each rule has the form (non-terminal (rhs ...) : action ...), where non-terminal is the name of the rule, rhs are the right-hand sides, i.e., the production rule, and action is a semantic action associated with the rule.

The generated parser is a two-argument procedure that takes a tokenizer and a syntax error procedure. The tokenizer should be a thunk that returns lexical tokens as produced by make-lexical-token. The syntax error procedure may be called with at least an error message (a string), and optionally the lexical token that caused the error.