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/* Example of a C++ extension to icon via loadfunc,
* without garbage collection difficulties.
* Type 'make <platform>' to build.
* For available <platform>s type 'make'.
* Carl Sturtivant, 2007/9/25
*/
#include "loadfuncpp.h"
enum { JMUP, JMDOWN };
class sequence: public generator {
long count;
long limit;
int direction;
bool hasNext() {
switch(direction) {
case JMUP:
return count <= limit;
case JMDOWN:
return count >= limit;
default:
return false;
}
}
value giveNext() {
switch(direction) {
case JMUP:
return count++;
case JMDOWN:
return count--;
default:
return nullvalue;
}
}
public:
sequence(value start, value end) {
count = start;
limit = end;
direction = ((count < limit) ? JMUP : JMDOWN);
};
};
extern "C" int jm_test_1(int argc, value argv[]) {
if( argc != 2 ) {
return FAILED;
}
sequence s(argv[1], argv[2]);
return s.generate(argv);
}
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