Re: push parser

[Joel E. Denny]

On Sun, 12 Feb 2006, Bob Rossi wrote:

> Anyways, I ran into an m4 question that might be answered here. I have
> this
>   m4_define([b4_yystate],[b4_push_if([(pv->yystate)],yystate)])
> 
> and when I try to use b4_yystate() in this context
>   ]b4_yyn()[ = yypact]b4_yystate()[;
> it works fine. However, I need the C array brackets in the output so
> however I try to write the line
>   ]b4_yyn()[ = yypact[]b4_yystate()[];
> or countless other variations, I just can't get it.

I'm not an m4 expert, so there might be an easier approach, but you could 
do this:

  m4_define([b4_bracket],[[[$1]]])

and then:

  ]b4_yyn()[ = yypact]b4_bracket(b4_yystate())[;

It's a little ugly, but it gets the job done.

Joel