Imported Upstream version 9.5.0upstream/9.5.0upstream

1 files changed, 31 insertions, 0 deletions

diff --git a/ipl/packs/loadfuncpp/doc/generator.cpp b/ipl/packs/loadfuncpp/doc/generator.cpp
new file mode 100644
index 0000000..5f99158
--- /dev/null
+++ b/ipl/packs/loadfuncpp/doc/generator.cpp
@@ -0,0 +1,31 @@
+
+/* 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;
+
+class sequence: public generator {
+    safe current, inc;
+  public:
+    sequence(safe start, safe increment) {
+        current = start - increment;
+        inc = increment;
+    }
+    virtual bool hasNext() {
+        return true;
+    }
+    virtual value giveNext() {
+        return current = current + inc;
+    }
+};
+
+extern "C" int seq2(value argv[]){
+    sequence seq(argv[1], argv[2]);
+    return seq.generate(argv);
+}
+
+