C++. How to define template parameter of type T for class A when class T needs a type A template parameter?
- by jaybny
Executor class has template of type P and it takes a P object in constructor. Algo class has a template E and also has a static variable of type E. Processor class has template T and a collection of Ts.
Question how can I define Executor< Processor<Algo> > and Algo<Executor> ? Is this possible? I see no way to defining this, its kind of an "infinite recursive template argument"
See code.
template <class T>
class Processor {
map<string,T> ts;
void Process(string str, int i)
{
ts[str].Do(i);
}
}
template <class P>
class Executor {
Proc &p;
Executor(P &p) : Proc(p) {}
void Foo(string str, int i) {
p.Process(str,i);
}
Execute(string str)
{
}
}
template <class E>
class Algo
{
static E e;
void Do(int i) {}
void Foo()
{
e.Execute("xxx");
}
}
main ()
{
typedef Processor<Algo> PALGO; // invalid
typedef Executor<PALGO> EPALGO;
typedef Algo<EPALGO> AEPALGO;
Executor<PALGO> executor(PALGO());
AEPALGO::E = executor;
}
