Re: print reduced input string

[Hans Aberg]

On 21 Aug 2005, at 18:35, Andreas Wapf wrote:

> How is it possible to print out the input value reduced by a rule  
> inside
> an action .
>
> As an example:
>
> stmts:    stmts, stmt
>     | stmt
>           {
>             printf(???);
>           }
>
> For example stmt is an "if a then b" statement. The $1 value of this
> stmt returns me a "if" node. I do not like to print the node, insteed
> the printf(???) should output "if a then b". Is this possible?

Assuming that your semantic values rpoduces strings, the in  
pseudocode, you would write something like:

conditional:
    IF boole THEN statement ELSE statement {
      print "if " + $2 + " then " + $4 + " else " + $ 5
    }

And similar for all other rules.

  Hans Aberg