Re: Hand-written parsers?

Thomas,
        As to what most commercial compilers use for parser creation I
have no idea. I do know that Borland's Delphi and C++ Builder
compilers are recursive-descent. Although C++ can be parsed with a
recursive-descent parser, some nimble footwork is required to get
around some tricky situations. One other approach to utilizing a
recursive descent parser is to seletcively jump into other parsing
methods. Sometimes the task of parsing can be simplified by using
recursive-descent for most of the syntactic structures and then
handing off to operator-precedence algorithms for things like
expressions. I have been working on a pascal derivative using
recursive descent and it is quite easy, but to parse assembler
statements I use a table driven approach for efficiency reasons. Both
are hand-written.


Jean




Thomas Luzat <thomas.luzat@gmx.net> wrote in message
> I'm wondering a bit what most commercial (mainly C++) compilers use:
> Hand-written parsers or parsers generated by compilers such as yacc?

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