Exactly. In any substantial language, the "lexer" and "parser" represent less than 1% of the work of implementing the language. In the Ecstasy (xtclang) projec

Exactly. In any substantial language, the "lexer" and "parser" represent less than 1% of the work of implementing the language. In the Ecstasy (xtclang) project, writing the lexer and parser (and then bootstrapping them both in the Ecstasy language) took less than 4 person weeks, out of 750+ (and counting) person weeks spent implementing the language.