> Le 18 févr. 2019 à 04:37, Peng Yu <[email protected]> a écrit :
>
> Since %union cannot be used in this case, how to deal with this
> scenario in bison? Thanks.
You want to read the documentation of api.value.type.
For instance:
‘{TYPE}’
Use this TYPE as semantic value.
%code requires
{
struct my_value
{
enum
{
is_int, is_str
} kind;
union
{
int ival;
char *sval;
} u;
};
}
%define api.value.type {struct my_value}
%token <u.ival> INT "integer"
%token <u.sval> STR "string"
_______________________________________________
[email protected] https://lists.gnu.org/mailman/listinfo/help-bison
