Re: Thread safe lexical scanner generator (Patrick TJ McPhee)
15 Apr 1998 23:25:49 -0400

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From: (Patrick TJ McPhee)
Newsgroups: comp.compilers,comp.programming.threads
Date: 15 Apr 1998 23:25:49 -0400
Organization: Crampton Vinegar Works
References: 98-04-040
Keywords: lex, parallel

<> wrote:
% Before I try to hand craft a lexical scanner, just wondering, is there
% any lexical scanner generator that I can use in a multi-threaded
% program (for example, two thread lexical scanning at the same time)?

I believe that the current version of flex has an option to generate
re-entrant scanners. I have version 2.4, which is quite old, on this
machine, and the man page says the -+ option, which generates C++
classes instead of a call to yylex, is fully re-entrant.

Patrick TJ McPhee
East York Canada

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