Look Ahead Left-to-right parse, Rightmost-derivation

Look Ahead Left-to-right parse, Rightmost-derivation

(parsing, algorithm)(LALR, Look ahead LR) A type of LR parser that can deal with more context-free grammars thanSLR parsers but less than LR[1] parsers. LALR parsers arepopular because they give a good trade-off between the numberof grammars they can deal with and the size of the parsingtable required. Compiler compilers like yacc and Bisongenerate LALR parsers.

Wikipedia.