static VALUE
range_each(VALUE range, SEL sel)
{
VALUE beg, end;
RETURN_ENUMERATOR(range, 0, 0);
beg = RANGE_BEG(range);
end = RANGE_END(range);
if (FIXNUM_P(beg) && FIXNUM_P(end)) { /* fixnums are special */
long lim = FIX2LONG(end);
long i;
if (!EXCL(range))
lim += 1;
for (i = FIX2LONG(beg); i < lim; i++) {
rb_yield(LONG2FIX(i));
RETURN_IF_BROKEN();
}
}
else if (SYMBOL_P(beg) && SYMBOL_P(end)) { /* symbols are special */
VALUE args[2];
args[0] = rb_sym_to_s(end);
args[1] = EXCL(range) ? Qtrue : Qfalse;
rb_objc_block_call(rb_sym_to_s(beg), selUpto, 2, args, sym_each_i, 0);
}
else {
VALUE tmp = rb_check_string_type(beg);
if (!NIL_P(tmp)) {
VALUE args[2];
args[0] = end;
args[1] = EXCL(range) ? Qtrue : Qfalse;
rb_objc_block_call(beg, selUpto, 2, args, rb_yield, 0);
}
else {
if (!discrete_object_p(beg)) {
rb_raise(rb_eTypeError, "can't iterate from %s",
rb_obj_classname(beg));
}
range_each_func(range, each_i, NULL);
}
}
return range;
}
VALUE
rb_block_call(VALUE obj, ID mid, int argc, VALUE *argv,
VALUE (*bl_proc) (ANYARGS), VALUE data2)
{
SEL sel = rb_vm_id_to_sel(mid, argc);
return rb_objc_block_call(obj, sel, argc, argv, bl_proc, data2);
}
static VALUE
range_first(VALUE range, SEL sel, int argc, VALUE *argv)
{
VALUE n, ary[2];
if (argc == 0) return RANGE_BEG(range);
rb_scan_args(argc, argv, "1", &n);
ary[0] = n;
ary[1] = rb_ary_new2(NUM2LONG(n));
rb_objc_block_call(range, selEach, 0, 0, first_i, (VALUE)ary);
return ary[1];
}
VALUE
rb_block_call(VALUE obj, ID mid, int argc, VALUE *argv,
VALUE (*bl_proc) (ANYARGS), VALUE data2)
{
SEL sel;
if (argc == 0) {
sel = sel_registerName(rb_id2name(mid));
}
else {
char buf[100];
snprintf(buf, sizeof buf, "%s:", rb_id2name(mid));
sel = sel_registerName(buf);
}
return rb_objc_block_call(obj, sel, NULL, argc, argv, bl_proc, data2);
}
static VALUE
enumerator_block_call(VALUE obj, VALUE (*func)(ANYARGS), VALUE arg)
{
struct enumerator *e;
int argc = 0;
const VALUE *argv = 0;
e = enumerator_ptr(obj);
if (e->args != 0) {
argc = RARRAY_LEN(e->args);
argv = RARRAY_PTR(e->args);
}
return rb_objc_block_call(e->obj, e->sel, argc, (VALUE *)argv,
func, arg);
}
static VALUE
rb_set_initialize(VALUE set, SEL sel, int argc, VALUE *argv)
{
VALUE val;
set = (VALUE)objc_msgSend((id)set, selInit);
rb_scan_args(argc, argv, "01", &val);
if (!NIL_P(val)) {
rb_objc_block_call(val, selEach, cacheEach, 0, 0, initialize_i, (VALUE)set);
}
else if (rb_block_given_p()) {
rb_warning("given block not used");
}
return set;
}
static VALUE
range_step(VALUE range, SEL sel, int argc, VALUE *argv)
{
VALUE b, e, step, tmp;
RETURN_ENUMERATOR(range, argc, argv);
b = RANGE_BEG(range);
e = RANGE_END(range);
if (argc == 0) {
step = INT2FIX(1);
}
else {
rb_scan_args(argc, argv, "01", &step);
if (!rb_obj_is_kind_of(step, rb_cNumeric)) {
step = rb_to_int(step);
}
VALUE zero = INT2FIX(0);
if (rb_vm_call(step, selLT, 1, &zero)) {
rb_raise(rb_eArgError, "step can't be negative");
}
else if (!rb_vm_call(step, selGT, 1, &zero)) {
rb_raise(rb_eArgError, "step can't be 0");
}
}
if (FIXNUM_P(b) && FIXNUM_P(e) && FIXNUM_P(step)) { /* fixnums are special */
long end = FIX2LONG(e);
long i, unit = FIX2LONG(step);
if (!EXCL(range))
end += 1;
i = FIX2LONG(b);
while (i < end) {
rb_yield(LONG2NUM(i));
RETURN_IF_BROKEN();
if (i + unit < i) break;
i += unit;
}
}
else if (SYMBOL_P(b) && SYMBOL_P(e)) { /* symbols are special */
VALUE args[2];
VALUE iter[2];
args[0] = rb_sym_to_s(e);
args[1] = EXCL(range) ? Qtrue : Qfalse;
iter[0] = INT2FIX(1);
iter[1] = step;
rb_objc_block_call(rb_sym_to_s(b), selUpto, 2, args, sym_step_i, (VALUE)iter);
}
else if (ruby_float_step(b, e, step, EXCL(range))) {
/* done */
}
else if (rb_obj_is_kind_of(b, rb_cNumeric) ||
!NIL_P(rb_check_to_integer(b, "to_int")) ||
!NIL_P(rb_check_to_integer(e, "to_int"))) {
SEL op = EXCL(range) ? selLT : selLE;
VALUE v = b;
int i = 0;
while (RTEST(rb_vm_call(v, op, 1, &e))) {
rb_yield(v);
RETURN_IF_BROKEN();
i++;
VALUE tmp = rb_vm_call(INT2NUM(i), selMULT, 1, &step);
v = rb_vm_call(b, selPLUS, 1, &tmp);
}
}
else {
tmp = rb_check_string_type(b);
if (!NIL_P(tmp)) {
VALUE args[2], iter[2];
b = tmp;
args[0] = e;
args[1] = EXCL(range) ? Qtrue : Qfalse;
iter[0] = INT2FIX(1);
iter[1] = step;
rb_objc_block_call(b, selUpto, 2, args, step_i, (VALUE)iter);
}
else {
VALUE args[2];
if (!discrete_object_p(b)) {
rb_raise(rb_eTypeError, "can't iterate from %s",
rb_obj_classname(b));
}
args[0] = INT2FIX(1);
args[1] = step;
return range_each_func(range, step_i, args);
}
}
return range;
}
