Release Notes

LRSTAR 24.0
2023. Simplified the grammar notation. Removed the parse-action operators: '=>', '=+>' and '=*>'. This forces all actions to be activated during the AST traversal. Therefore, all actions are visited in a top-down order. This makes the grammar cleaner and the code cleaner. It also works better with Visual Studio.

LRSTAR 19.2
2020. An improved /o option, a new /ci option.

LRSTAR 18.0
2020. Has an improved LR(*) parallel lookahead algorithm. Reads ANTLR and YACC grammars, after some modifications are made to the grammar.

LRSTAR 15.0
2020. No more skeleton files required, easier to make changes in the code.

LRSTAR 11.0
2018. Introduced an LR(*) parallel lookahead algorithm, more efficient that the previous LR(*) algorithm.

LRSTAR 6.0
2012. Introduced an LR(*) lookahead algorithm.

LALR 5.5
2003. Generates LALR parsers in the C++ language. 

LALR 5.0
2000. A Windows 32-bit version.

LALR 4.0
1990. Provides the fastest table-driven parsers, EBNF grammar notation, and AST construction, $495.

LALR 3.0
1987. Released the LALR parser generator, DFA lexer generator and compiler front-end source code in the C language, $99.

LALR 1.0
1985. Released the "LALR(1) Grammar Analyzer and Parser-Table Generator for IBM PC's" for $50.