Re: Best language for implementing compilers?

Am 10.03.2019 um 12:13 schrieb Christopher F Clark:


> All that said, the output of any decent
> C/C++ lexer and parser generator is often more than fast enough. That's
> despite lexing and parsing often taking upto a third of the compilation time.
> BTW, lexing (because it looks at every character) is the dominant factor in
> that.


If so, then lexing were the dominant factor for *all* parsers with a
lexer, not only for C/C++.


My experience and the existence of specific workarounds identify two C
specific properties as most time consuming, the preprocessor and the
lack of a multi-module (project) compilation. None of these is related
to a *lexer in the strict sense* (tokenizer), because it all happens in
between the tokenizer and parser.


DoDi

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