Precc generates standard ANSI C and is ‘plug compatible’ with lex-generated lexical analyzers prepared for the UNIX yacc compiler-compiler. This article reports on the utility in question three years after public release.
The result is a compiler-compiler that takes unlimited lookahead and backtracking, the extended BNF notation, and parameterized grammars with (higher-order) meta-parameters to the world of C programming. Top-down (LL) context-sensitive parsers with integrated synthesis and use of attributes are easy to expressin functional programming languages, but the elegant functional programming model can also serve as an exact prototype for a more efficient implementation of the technology in ANSI C.
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