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/* Example of a C++ extension to icon via loadfunc,
* without garbage collection difficulties.
* Type 'make iexample' to build.
* Carl Sturtivant, 2008/3/16
*/
#include "loadfuncpp.h"
using namespace Icon;
struct addup: public iterate {
safe total;
int count;
addup(): total((long)0), count(0) {}
virtual void takeNext(const value& x) {
total = total + x;
}
virtual bool wantNext(const value& x) {
return ++count <= 3;
}
};
extern "C" int iexample(int argc, value argv[]) {
addup sum;
sum.every(argv[1], argv[2]);
argv[0] = sum.total;
return SUCCEEDED;
}
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