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#include < ruby.h > //
static int id_sum;
int Values[] = {5, 10 ,15,-1,20,0};
static VALUE wrap_sum(VALUE args)
{
VALUE * values = (VALUE *) args;
VALUE summer = values[0];
VALUE max = values[1];
return rb_funcall(summer,id_sum,1,max);
}
static VALUE protected_sum(VALUE summer, VALUE max)
{
int error; VALUE args[2];
VALUE result;
args[0] = summer;
args[1] = max;
result = rb_protect(wrap_sum,(VALUE)args, &error);
return error ? Qnil:result;
}
int main()
{
int value;
int *next = Values;
ruby_init();
ruby_init_loadpath();
ruby_script("embedded");
rb_require("sum.rb");
VALUE summer = rb_class_new_instance(0,0,rb_const_get(rb_cObject,rb_intern("Summer")));
id_sum = rb_intern("sum");
while (value = *next++)
{
VALUE result = protected_sum(summer,INT2NUM(value));
if (NIL_P(result))
{
printf("Sum to %d doesn't compute!\n",value);
}
else
printf("Sum to %d is %d\n",value,NUM2INT(result));
}
ruby_finalize();
}
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