Re: re-enterant flex scanner

    "Amnon Cohen" <amnonc@mercury.co.il> wrote:
> What is the easiest way to write a re-entrant scanner using flex?
> The C++ mode provides reentrancy, but not parsing from a string
> (yy_scan_buffer) which I need.


There are two ways you may achieve this:


(a) sub-classing yyFlexLexer and overriding the method LexerInput() so
that the first parameter of LexerInput() holds the string you want to
parse;


(b) creating an istrstream from the string you want to parse
(myInStream) and using the constructor yyFlexLexer(myInStream) to
obtain your tokenizer.

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