[antlr-interest] ANTLR C: Question regarding the portability of generated lexer C code

David-Sarah Hopwood david-sarah at jacaranda.org
Thu Oct 15 12:30:05 PDT 2009


Lego Haryanto wrote:
> Jim, thanks for your response ...
> 
> I know that in the EBCDIC system we feed a Unicode stream into the lexer,
> thus I'm pretty sure when the generated lexer code I pasted before is
> executed, it is already operating on the 32-bit unicode stream.
> 
> The problem is more about the native C compilation in an EBCDIC system like
> IBM z/OS mainframe.
> 
> To see if a character from the Unicode stream is an 'A', we have to compare
> with a value 0x0041 ... If we match it with a native 'A' in the code, this
> will not be a match in an EBCDIC C compilation.

The z/OS C compiler is able to compile in a mode where string and character
literals are treated as ISO-8859-1.
<http://lists.gnupg.org/pipermail/gcrypt-devel/2009-July/001469.html>

-- 
David-Sarah Hopwood  ⚥  http://davidsarah.livejournal.com



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