initial-action question

[Aaron Jackson]

I would like to declare some variables that are local to yyparse.  I  
am building a linked list of structures, and I need to make sure I  
have values for all the structure members before I add a new node to  
the list.  Since I wrote the parser to be a pure parser, global  
variables, are not an option.  Something like %initial-action {int x;  
int y; int z;} doesn't work, since the initial action code is  
enclosed in braces and the variables x,y,z,etc. do not exist outside  
the braces.  If I use %parse-param{variables_t variables;}, where  
variables_t is a structure containing x,y,z, I get what I want, but  
since I don't need x,y,z after yyparse returns, this seems like an  
inefficient way to do things.  Is there a better way to do this?   
There must be a "standard" way this is done---temporarily saving all  
the previously parsed values until all the required values are  
available.  Any help would be very appreciated.  Thanks.

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