When you use %union to specify multiple value types, you must
declare the value type of each nonterminal symbol for which values are
used. This is done with a %type declaration, like this:
%type <type> nonterminal...
Here nonterminal is the name of a nonterminal symbol, and
type is the name given in the %union to the alternative
that you want (see section The Collection of Value Types). You
can give any number of nonterminal symbols in the same %type
declaration, if they have the same value type. Use spaces to separate
the symbol names.
You can also declare the value type of a terminal symbol. To do this,
use the same <type> construction in a declaration for the
terminal symbol. All kinds of token declarations allow
<type>.
Please take a moment to fill out
this visitor survey You can help support this site by
visiting the advertisers that sponsor it! (only once each, though)
