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Can I get lex to put out a yylex() function with a different name?

开发者 https://www.devze.com 2023-02-25 03:29 出处：网络

I want to have two lexers in one project, and I don\'t want to run into problems with hav开发者_C百科ing multiple yylex functions in the build. Can I make lex output with a different prefix? You can u

相关专题：lex parsing

I want to have two lexers in one project, and I don't want to run into problems with hav开发者_C百科ing multiple yylex functions in the build. Can I make lex output with a different prefix?

You can use the -Pprefix parameter for flex in your makefile. Using flex -Pfoo you would effectively prefix all yy generated functions. Have a look at the manual page for further details.

flex lets you do that. Just define the YY_DECL macro. Dunno about actual Unix(tm) lex(1) though.

You could build a C++ lexer. This means all the state information is held in an object.

Then it is just a matter of using the correct object!