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how to get YY_CURRENT_BUFFER when using %option reentrant
From: |
henrik . sorensen |
Subject: |
how to get YY_CURRENT_BUFFER when using %option reentrant |
Date: |
Thu, 29 Jun 2006 21:53:39 +0000 |
User-agent: |
KMail/1.9.1 |
Hi List,
I am in the process of switching my flex scanner to a reentrant scanner.
In a sub function, that used the macro YY_CURRENT_BUFFER, how can I do this
when using a reentrant scanner ?
The compiler complains over
../../gcc-src/gcc-4.2-20060415/gcc/pl1/pl1-scanner.l: In
function 'stackCurrentBuffer':
../../gcc-src/gcc-4.2-20060415/gcc/pl1/pl1-scanner.l:1208: error: 'yyg'
undeclared (first use in this function)
../../gcc-src/gcc-4.2-20060415/gcc/pl1/pl1-scanner.l:1208: error: (Each
undeclared identifier is reported only once
../../gcc-src/gcc-4.2-20060415/gcc/pl1/pl1-scanner.l:1208: error: for each
function it appears in.)
I could of course cheat and define yyg myself as
struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
but is there not another way to get the YY_CURRENT_BUFFER ?
The version before the conversion to reentrant can be found in the source
forge cvs:
http://pl1gcc.cvs.sourceforge.net/pl1gcc/gcc/gcc/pl1/pl1-scanner.l?revision=1.41&view=markup
thanks for your help
Henrik
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