Re: sequence in a rule

[Hans Aberg]

On 6 Nov 2008, at 01:21, Angelika Kratochwil wrote:

> it works when i have in one row just one signal, but if i have a  
> sequence,
> it didn't.
...
> asig: asig COMMA STRING ™ ™ ™  { printf("signal: %s",$3);}
> ™ ™ ™  | STRING™ ™ ™  ™ ™ ™  { printf("signal: %s",$1);}
> ™ ™ ™  ;
...
> has anyone an idea how i can merge a sequence? the problem is the  
> "asig"
> rule in the rule "fullSignal". Please help me, I have no idea how I  
> can
> solve that.

Suppose one would want to create a list containing the string  
components; them, in C++ pseudocode using a std::list like container,  
one could write
  asig:
      STRING            { $$ = list($1); }
    | asig COMMA STRING { $$ = $1.append($3); }
  ;
Then en semantic type needs to be able to hold such a type.

  Hans