Re: Newbie Q - Grammer rules for parsing HEX string in BISON

spacemonkeyxyz-google@yahoo.co.uk (Space Monkey) schreibt:


>I should have added that the desired outcome is to populate the
>contents of a binary file using instructions contained in a separate
>text file.


In that simple case I'd handcraft the appropriate code.


>I am a complete novice on YACC and BISON and any help with the grammar
>rules for the parsing the hexadecimal list in the above example is
>appreciated.


If you want to learn more about YACC and BISON, then have a look at a C like
grammar (you'll not need a full C/C++ grammar). The semantic code may be
simple, depending on the "commands" in your text file. For your example you can
use a global variable for the memory address, where every parsed number is to
be stored, and afterwards the address has to be incremented (*addr++ = nmbr;).


DoDi

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