how to push token back for Bison to consider it?

Hi All,


I want to do the following: when a certain grammar rule is matched I
want to, in the action part, read all the tokens until a certain token
is read, and then give the control back to the parser, who should
continue with that token as the next token. In other words, I am doing
something like:




ruleBlah: nonterm1 nonterm2
                        {
                          while( yylex() != SOME_PARTICULAR_TOKEN )
                          { do_something(); }
                        }


ruleBlah2: SOME_PARTICULAR_TOKEN nonterm3 nonterm4


The problem is that the code above "swallows" SOME_PARTICULAR_TOKEN
token, and the generated parser never sees it. This causes the parser
never to match "ruleBlah2" that requires that token.


I tried using YYBACKUP( token, value ), but it did not work the way I
expected.


Any advice is much appreciated.


Regards,


Milan
[You have to write your own routine that sits between the yylex() that
the parser calls and the real lexer that can queue tokens. It's not
hard. -John]

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