Adjective
LALR (not comparable)
(software) Initialism of Look-Ahead LR. (used for parsers)
Although GLR parsing was developed in the 1980s, many new language definitions and parser generators continue to be based on LL, LALR or LR parsing up to the present day. Source: Internet
A grammar that is conflict-free for a canonical LR generator but has conflicts in an LALR generator is called LR(1) but not LALR(1), and not SLR. Source: Internet
In an LALR parser this one state has conflicting actions (given lookahead c or d, reduce to E or F), a "reduce/reduce conflict"; the above grammar will be declared ambiguous by a LALR parser generator and conflicts will be reported. Source: Internet
For the same reason, error-reporting can be quite hard because LALR parser errors cannot always be interpreted into messages with high-level terms meaningful for the end user. Source: Internet
For this reason, the recursive descent parser is sometimes preferred over the LALR parser. Source: Internet
He showed that the LALR parser has more language recognition power than the LR(0) parser, while requiring the same number of states as the LR(0) parser for a language that can be recognized by both parsers. Source: Internet