#include <coroutine.hfa>
#include <fstream.hfa>

coroutine PingPong {
	const char * name;
	/* const */ unsigned int N;
	PingPong * part;
};

void ?{}( PingPong & this, const char * name, unsigned int N, PingPong & part ) {
	(this.__cor){name};
	this.name = name;
	this.N = N;
	this.part = &part;
}
void ?{}( PingPong & this, const char * name, unsigned int N ) {
	this{ name, N, *(PingPong *)0 };
}
void cycle( PingPong & pingpong ) {
	resume( pingpong );
}
void partner( PingPong & this, PingPong & part ) {
	this.part = &part;
	resume( this );
}
void main( PingPong & pingpong ) {						// ping's starter ::main, pong's starter ping
	for ( pingpong.N ) {								// N ping-pongs
		sout | pingpong.name;
		cycle( *pingpong.part );
	} // for
}
int main() {
	enum { N = 20 };
	PingPong ping = { "ping", N }, pong = { "pong", N, ping };
	partner( ping, pong );
}

// Local Variables: //
// tab-width: 4 //
// compile-command: "cfa pingpong.cfa" //
// End: //