Class: List

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
ext/list/list.c

Constant Summary collapse

VERSION = 
rb_str_new2(LIST_VERSION)

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Object 



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# File 'ext/list/list.c', line 410

static VALUE
list_initialize(int argc, VALUE *argv, VALUE self)
{
	VALUE size, val;
	long len;
	long i;

	list_modify_check(self);
	if (argc == 0) {
		return self;
	}
	if (argc == 1 && !FIXNUM_P(argv[0])) {
		switch (rb_type(argv[0])) {
		case T_ARRAY:
			return list_push_ary(self, argv[0]);
		case T_DATA:
			return list_replace(self, argv[0]);
		default:
			break;
		}
	}

	rb_scan_args(argc, argv, "02", &size, &val);

	len = NUM2LONG(size);
	if (len < 0) {
		rb_raise(rb_eArgError, "negative size");
	}
	if (LIST_MAX_SIZE < len) {
		rb_raise(rb_eArgError, "size too big");
	}

	if (rb_block_given_p()) {
		if (argc == 2) {
			rb_warn("block supersedes default value argument");
		}
		for (i = 0; i < len; i++) {
			list_push(self, rb_yield(LONG2NUM(i)));
		}
	} else {
		for (i = 0; i < len; i++) {
			list_push(self, val);
		}
	}
	return self;
}

Class Method Details

.[](*args) ⇒ Object 



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# File 'ext/list/list.c', line 388

static VALUE
list_s_create(int argc, VALUE *argv, VALUE klass)
{
	VALUE list;

	list = rb_obj_alloc(klass);
	return list_push_m(argc, argv, list);
}

.try_convert(obj) ⇒ Object 



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# File 'ext/list/list.c', line 404

static VALUE
list_s_try_convert(VALUE dummy, VALUE obj)
{
	return check_list_type(obj);
}

Instance Method Details

#&(list2) ⇒ Object 



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# File 'ext/list/list.c', line 2080

static VALUE
list_and(VALUE list1, VALUE list2)
{
	VALUE list3, hash;
	st_table *table;
	st_data_t vv;
	item_t *c1;

	list2 = to_list(list2);
	list3 = list_new();
	if (LIST_LEN(list2) == 0) return list3;
	hash = list_make_hash(list2);
	table = RHASH_TBL(hash);

	LIST_FOR(list1, c1) {
		vv = (st_data_t) c1->value;
		if (st_delete(table, &vv, 0)) {
			list_push(list3, c1->value);
		}
	}

	return list3;
}

#*(times) ⇒ Object 



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# File 'ext/list/list.c', line 1976

static VALUE
list_times(VALUE self, VALUE times)
{
	VALUE result;
	VALUE tmp;
	long i, len;
	item_t *c;

	tmp = rb_check_string_type(times);
	if (!NIL_P(tmp)) {
		return list_join(self, tmp);
	}

	len = NUM2LONG(times);
	if (len == 0) {
		return rb_obj_alloc(rb_obj_class(self));
	}
	if (len < 0) {
		rb_raise(rb_eArgError, "negative argument");
	}

	if (LIST_MAX_SIZE / len < LIST_LEN(self)) {
		rb_raise(rb_eArgError, "argument too big");
	}

	result = rb_obj_alloc(rb_obj_class(self));
	if (0 < LIST_LEN(self)) {
		for (i = 0; i < len; i++) {
			LIST_FOR(self, c) {
				list_push(result, c->value);
			}
		}
	}
	return result;
}

#+(y) ⇒ Object 



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# File 'ext/list/list.c', line 1956

static VALUE
list_plus(VALUE x, VALUE y)
{
	item_t *cx, *cy;
	long len;
	VALUE result;

	Check_Type(y, T_DATA);
	len = LIST_LEN(x) + LIST_LEN(y);

	result = list_new();
	LIST_FOR(x,cx) {
		list_push(result, cx->value);
	}
	LIST_FOR(y,cy) {
		list_push(result, cy->value);
	}
	return result;
}

#-(list2) ⇒ Object 



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# File 'ext/list/list.c', line 2063

static VALUE
list_diff(VALUE list1, VALUE list2)
{
	VALUE list3;
	volatile VALUE hash;
	item_t *c;

	hash = list_make_hash(to_list(list2));
	list3 = list_new();

	LIST_FOR(list1, c) {
		if (st_lookup(RHASH_TBL(hash), c->value, 0)) continue;
		list_push(list3, c->value);
	}
	return list3;
}

#<<(obj) ⇒ Object 



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# File 'ext/list/list.c', line 337

static VALUE
list_push(VALUE self, VALUE obj)
{
	list_t *ptr;
	item_t *next;

	list_modify_check(self);
	if (self == obj) {
		rb_raise(rb_eArgError, "`List' cannot set recursive");
	}

	next = item_alloc(obj, NULL);

	Data_Get_Struct(self, list_t, ptr);
	if (ptr->first == NULL) {
		ptr->first = next;
		ptr->last = next;
		ptr->last->next = NULL;
	} else {
		ptr->last->next = next;
		ptr->last = next;
	}
	LIST_LEN(self)++;
	return self;
}

#<=>(list2) ⇒ Object 



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# File 'ext/list/list.c', line 1863

static VALUE
list_cmp(VALUE list1, VALUE list2)
{
	VALUE v;
	long len;

	if (rb_type(list2) != T_DATA) return Qnil;
	if (list1 == list2) return INT2FIX(0);
	v = rb_exec_recursive_paired(recursive_cmp, list1, list2, list2);
	if (v != Qundef) return v;
	len = LIST_LEN(list1) - LIST_LEN(list2);
	if (len == 0) return INT2FIX(0);
	if (0 < len) return INT2FIX(1);
	return INT2FIX(-1);
}

#==(obj) ⇒ Object 



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# File 'ext/list/list.c', line 647

static VALUE
list_equal(VALUE self, VALUE obj)
{
	if (self == obj)
		return Qtrue;

	if (!rb_obj_is_kind_of(obj, cList)) {
		if (rb_type(obj) == T_ARRAY) {
			return Qfalse;
		}
		if (!rb_respond_to(obj, id_to_list)) {
			return Qfalse;
		}
		return rb_equal(obj, self);
	}
	return rb_exec_recursive_paired(recursive_equal, self, obj, obj);

}

#[](*args) ⇒ Object 



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# File 'ext/list/list.c', line 761

static VALUE
list_aref(int argc, VALUE *argv, VALUE self)
{
	VALUE arg;
	long beg, len;
	list_t *ptr;

	Data_Get_Struct(self, list_t, ptr);
	if (argc == 2) {
		beg = NUM2LONG(argv[0]);
		len = NUM2LONG(argv[1]);
		if (beg < 0) {
			beg += LIST_LEN(self);
		}
		return list_subseq(self, beg, len);
	}
	if (argc != 1) {
		rb_scan_args(argc, argv, "11", NULL, NULL);
	}
	arg = argv[0];

	/* special case - speeding up */
	if (FIXNUM_P(arg)) {
		return list_entry(self, FIX2LONG(arg));
	}
	/* check if idx is Range */
	switch (rb_range_beg_len(arg, &beg, &len, LIST_LEN(self), 0)) {
	case Qfalse:
		break;
	case Qnil:
		return Qnil;
	default:
		return list_subseq(self, beg, len);
	}
	return list_entry(self, NUM2LONG(arg));
}

#[]=(*args) ⇒ Object 



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# File 'ext/list/list.c', line 917

static VALUE
list_aset(int argc, VALUE *argv, VALUE self)
{
	long offset, beg, len;
	list_t *ptr;

	Data_Get_Struct(self, list_t, ptr);
	if (argc == 3) {
		list_modify_check(self);
		beg = NUM2LONG(argv[0]);
		len = NUM2LONG(argv[1]);
		list_splice(self, beg, len, argv[2]);
		return argv[2];
	}
	rb_check_arity(argc, 2, 2);
	list_modify_check(self);
	if (FIXNUM_P(argv[0])) {
		offset = FIX2LONG(argv[0]);
		goto fixnum;
	}
	if (rb_range_beg_len(argv[0], &beg, &len, LIST_LEN(self), 1)) {
		/* check if idx is Range */
		list_splice(self, beg, len, argv[1]);
		return argv[1];
	}

	offset = NUM2LONG(argv[0]);
fixnum:
	list_store(self, offset, argv[1]);
	return argv[1];
}

#assoc(key) ⇒ Object 



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# File 'ext/list/list.c', line 1920

static VALUE
list_assoc(VALUE self, VALUE key)
{
	VALUE v;
	item_t *c;

	if (list_empty_p(self)) return Qnil;
	LIST_FOR(self, c) {
		v = check_list_type(c->value);
		if (!NIL_P(v)) {
			if (0 < LIST_LEN(v) && rb_equal(list_first(0,NULL,v), key)) {
				return v;
			}
		}
	}
	return Qnil;
}

#at(pos) ⇒ Object 



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# File 'ext/list/list.c', line 949

static VALUE
list_at(VALUE self, VALUE pos)
{
	return list_entry(self, NUM2LONG(pos));
}

#bsearch ⇒ Object

from CRuby rb_ary_bsearch



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# File 'ext/list/list.c', line 2444

static VALUE
list_bsearch(VALUE self)
{
	long low, high, mid;
	int smaller = 0, satisfied = 0;
	VALUE v, val, ary;

	ary = list_to_a(self);
	low = 0;
	high = RARRAY_LEN(ary);

	RETURN_ENUMERATOR(self, 0, 0);
	while (low < high) {
		mid = low + ((high - low) / 2);
		val = rb_ary_entry(ary, mid);
		v = rb_yield(val);
		if (FIXNUM_P(v)) {
			if (FIX2INT(v) == 0) return val;
			smaller = FIX2INT(v) < 0;
		}
		else if (v == Qtrue) {
			satisfied = 1;
			smaller = 1;
		}
		else if (v == Qfalse || v == Qnil) {
			smaller = 0;
		}
		else if (rb_obj_is_kind_of(v, rb_cNumeric)) {
			const VALUE zero = INT2FIX(0);
			switch (rb_cmpint(rb_funcall(v, id_cmp, 1, zero), v, INT2FIX(0))) {
				case 0: return val;
				case 1: smaller = 1; break;
				case -1: smaller = 0;
			}
		}
		else {
			rb_raise(rb_eTypeError, "wrong argument type %s"
					" (must be numeric, true, false or nil)",
					rb_obj_classname(v));
		}
		if (smaller) {
			high = mid;
		}
		else {
			low = mid + 1;
		}
	}
	if (low == RARRAY_LEN(ary)) return Qnil;
	if (!satisfied) return Qnil;
	return rb_ary_entry(ary, low);
}

#clear ⇒ Object 



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# File 'ext/list/list.c', line 485

static VALUE
list_clear(VALUE self)
{
	list_modify_check(self);
	list_t *ptr;
	Data_Get_Struct(self, list_t, ptr);
	list_free(ptr);
	ptr->first = NULL;
	ptr->last = NULL;
	LIST_LEN(self) = 0;
	return self;
}

#collect ⇒ Object 



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# File 'ext/list/list.c', line 1495

static VALUE
list_collect(VALUE self)
{
	return list_collect_bang(rb_obj_clone(self));
}

#collect! ⇒ Object 



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# File 'ext/list/list.c', line 1483

static VALUE
list_collect_bang(VALUE self)
{
	item_t *c;

	RETURN_SIZED_ENUMERATOR(self, 0, 0, list_enum_length);
	LIST_FOR(self, c) {
		c->value = rb_yield(c->value);
	}
	return self;
}

#combination(num) ⇒ Object 



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# File 'ext/list/list.c', line 2364

static VALUE
list_combination(VALUE self, VALUE num)
{
	return list_delegate_rb(1, &num, self, rb_intern("combination"));
}

#compact ⇒ Object 



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# File 'ext/list/list.c', line 2203

static VALUE
list_compact(VALUE self)
{
	self = list_dup(self);
	list_compact_bang(self);
	return self;
}

#compact! ⇒ Object 



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# File 'ext/list/list.c', line 2189

static VALUE
list_compact_bang(VALUE self)
{
	long len;

	list_modify_check(self);
	len = LIST_LEN(self);
	list_delete(self, Qnil);
	if (len == LIST_LEN(self)) {
		return Qnil;
	}
	return self;
}

#concat(obj) ⇒ Object 



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# File 'ext/list/list.c', line 1038

static VALUE
list_concat(VALUE self, VALUE obj)
{
	long len;
	enum ruby_value_type type;

	list_modify_check(self);
	type = rb_type(obj);
	if (type == T_DATA) {
		len = LIST_LEN(obj);
	} else if (type == T_ARRAY) {
		len = RARRAY_LEN(obj);
	} else {
		obj = to_list(obj);
		len = LIST_LEN(obj);
	}

	if (0 < len) {
		list_splice(self, LIST_LEN(self), 0, obj);
	}
	return self;
}

#count(*args) ⇒ Object 



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# File 'ext/list/list.c', line 2288

static VALUE
list_count(int argc, VALUE *argv, VALUE self)
{
	VALUE obj;
	item_t *c;
	long n = 0;

	if (argc == 0) {
		if (!rb_block_given_p()) {
			return list_length(self);
		}
		LIST_FOR(self,c) {
			if (RTEST(rb_yield(c->value))) n++;
		}
	} else {
		rb_scan_args(argc, argv, "1", &obj);
		if (rb_block_given_p()) {
			rb_warn("given block not used");
		}
		LIST_FOR(self,c) {
			if (rb_equal(c->value, obj)) n++;
		}
	}
	return LONG2NUM(n);
}

#cycle(*args) ⇒ Object 



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# File 'ext/list/list.c', line 2332

static VALUE
list_cycle(int argc, VALUE *argv, VALUE self)
{
	VALUE nv = Qnil;
	item_t *c;
	long n;

	RETURN_SIZED_ENUMERATOR(self, argc, argv, list_cycle_size);
	rb_scan_args(argc, argv, "01", &nv);

	if (NIL_P(nv)) {
		n = -1;
	} else {
		n = NUM2LONG(nv);
		if (n <= 0) return Qnil;
	}

	while (0 < LIST_LEN(self) && (n < 0 || 0 < n--)) {
		LIST_FOR(self, c) {
			rb_yield(c->value);
			if (list_empty_p(self)) break;
		}
	}
	return Qnil;
}

#delete(item) ⇒ Object 



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# File 'ext/list/list.c', line 1572

static VALUE
list_delete(VALUE self, VALUE item)
{
	list_t *ptr;
	item_t *c, *before = NULL, *next;
	long len;

	list_modify_check(self);
	Data_Get_Struct(self, list_t, ptr);
	if (LIST_LEN(self) == 0) return Qnil;

	len = LIST_LEN(self);
	for (c = ptr->first; c; c = next) {
		next = c->next;
		if (rb_equal(c->value, item)) {
			if (ptr->first == ptr->last) {
				ptr->first = NULL;
				ptr->last = NULL;
			} else if (c == ptr->first) {
				ptr->first = c->next;
			} else if (c == ptr->last) {
				ptr->last = before;
				ptr->last->next = NULL;
			} else {
				before->next = c->next;
			}
			xfree(c);
			LIST_LEN(self)--;
		} else {
			before = c;
		}
	}

	if (LIST_LEN(self) == len) {
		if (rb_block_given_p()) {
			return rb_yield(item);
		}
		return Qnil;
	} else {
		return item;
	}
}

#delete_at(pos) ⇒ Object 



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# File 'ext/list/list.c', line 1662

static VALUE
list_delete_at_m(VALUE self, VALUE pos)
{
	return list_delete_at(self, NUM2LONG(pos));
}

#delete_if ⇒ Object 



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# File 'ext/list/list.c', line 1736

static VALUE
list_delete_if(VALUE self)
{
	RETURN_SIZED_ENUMERATOR(self, 0, 0, list_enum_length);
	list_reject_bang(self);
	return self;
}

#drop(n) ⇒ Object 



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# File 'ext/list/list.c', line 2413

static VALUE
list_drop(VALUE self, VALUE n)
{
	VALUE result;
	long pos = NUM2LONG(n);

	if (pos < 0) {
		rb_raise(rb_eArgError, "attempt to drop negative size");
	}
	result = list_subseq(self, pos, LIST_LEN(self));
	if (result == Qnil) result = list_new();
	return result;
}

#drop_while ⇒ Object 



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# File 'ext/list/list.c', line 2427

static VALUE
list_drop_while(VALUE self)
{
	long i = 0;
	item_t *c;

	RETURN_ENUMERATOR(self, 0, 0);
	LIST_FOR(self, c) {
		if (!RTEST(rb_yield(c->value))) break;
		i++;
	}
	return list_drop(self, LONG2FIX(i));
}

#each ⇒ Object 



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# File 'ext/list/list.c', line 457

static VALUE
list_each(VALUE self)
{
	item_t *c;

	RETURN_SIZED_ENUMERATOR(self, 0, 0, list_enum_length);

	LIST_FOR(self, c) {
		rb_yield(c->value);
	}
	return self;
}

#each_index ⇒ Object 



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# File 'ext/list/list.c', line 470

static VALUE
list_each_index(VALUE self)
{
	item_t *c;
	long index;

	RETURN_SIZED_ENUMERATOR(self, 0, 0, list_enum_length);

	index = 0;
	LIST_FOR(self, c) {
		rb_yield(LONG2NUM(index++));
	}
	return self;
}

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/list/list.c', line 1182

static VALUE
list_empty_p(VALUE self)
{
	list_t *ptr;
	Data_Get_Struct(self, list_t, ptr);
	if (LIST_LEN(self) == 0)
		return Qtrue;
	return Qfalse;
}

#fetch(*args) ⇒ Object 



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# File 'ext/list/list.c', line 955

static VALUE
list_fetch(int argc, VALUE *argv, VALUE self)
{
	VALUE pos, ifnone;
	long block_given;
	long idx;
	list_t *ptr;

	Data_Get_Struct(self, list_t, ptr);
	rb_scan_args(argc, argv, "11", &pos, &ifnone);
	block_given = rb_block_given_p();
	if (block_given && argc == 2) {
		rb_warn("block supersedes default value argument");
	}
	idx = NUM2LONG(pos);

	if (idx < 0) {
		idx += LIST_LEN(self);
	}
	if (idx < 0 || LIST_LEN(self) <= idx) {
		if (block_given) return rb_yield(pos);
		if (argc == 1) {
			rb_raise(rb_eIndexError, "index %ld outside of array bounds: %ld...%ld",
					idx - (idx < 0 ? LIST_LEN(self) : 0), -LIST_LEN(self), LIST_LEN(self));
		}
		return ifnone;
	}
	return list_entry(self, idx);
}

#fill(*args) ⇒ Object 



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# File 'ext/list/list.c', line 1767

static VALUE
list_fill(int argc, VALUE *argv, VALUE self)
{
	VALUE item, arg1, arg2;
	long beg = 0, len = 0, end = 0;
	long i;
	int block_p = FALSE;
	item_t *c;

	list_modify_check(self);
	if (rb_block_given_p()) {
		block_p = TRUE;
		rb_scan_args(argc, argv, "02", &arg1, &arg2);
		argc += 1; /* hackish */
	} else {
		rb_scan_args(argc, argv, "12", &item, &arg1, &arg2);
	}
	switch (argc) {
	case 1:
		beg = 0;
		len = LIST_LEN(self);
		break;
	case 2:
		if (rb_range_beg_len(arg1, &beg, &len, LIST_LEN(self), 1)) {
			break;
		}
		/* fall through */
	case 3:
		beg = NIL_P(arg1) ? 0 : NUM2LONG(arg1);
		if (beg < 0) {
			beg = LIST_LEN(self) + beg;
			if (beg < 0) beg = 0;
		}
		len = NIL_P(arg2) ? LIST_LEN(self) - beg : NUM2LONG(arg2);
		break;
	}
	if (len < 0) {
		return self;
	}
	if (LIST_MAX_SIZE <= beg || LIST_MAX_SIZE - beg < len) {
		rb_raise(rb_eArgError, "argument too big");
	}
	end = beg + len;
	if (LIST_LEN(self) < end) {
		for (i = 0; i < end - LIST_LEN(self); i++) {
			list_push(self, Qnil);
		}
	}

	i = -1;
	LIST_FOR(self, c) {
		i++;
		if (i < beg) continue;
		if ((end - 1) < i) break;
		if (block_p) {
			c->value = rb_yield(LONG2NUM(i));
		} else {
			c->value = item;
		}
	}
	return self;
}

#first(*args) ⇒ Object 



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# File 'ext/list/list.c', line 1009

static VALUE
list_first(int argc, VALUE *argv, VALUE self)
{
	list_t *ptr;
	Data_Get_Struct(self, list_t, ptr);
	if (argc == 0) {
		if (ptr->first == NULL) return Qnil;
		return ptr->first->value;
	} else {
		return list_take_first_or_last(argc, argv, self, LIST_TAKE_FIRST);
	}
}

#flatten(*args) ⇒ Object 



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# File 'ext/list/list.c', line 2253

static VALUE
list_flatten(int argc, VALUE *argv, VALUE self)
{
	int mod = 0, level = -1;
	VALUE result, lv;

	rb_scan_args(argc, argv, "01", &lv);
	if (!NIL_P(lv)) level = NUM2INT(lv);
	if (level == 0) return list_make_shared_copy(self);

	result = flatten(self, level, &mod);
	OBJ_INFECT(result, self);

	return result;
}

#flatten!(*args) ⇒ Object 



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# File 'ext/list/list.c', line 2269

static VALUE
list_flatten_bang(int argc, VALUE *argv, VALUE self)
{
	int mod = 0, level = -1;
	VALUE result, lv;

	rb_scan_args(argc, argv, "01", &lv);
	list_modify_check(self);
	if (!NIL_P(lv)) level = NUM2INT(lv);
	if (level == 0) return Qnil;

	result = flatten(self, level, &mod);
	if (mod == 0) {
		return Qnil;
	}
	list_replace(self, result);
	return self;
}

#frozen? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/list/list.c', line 606

static VALUE
list_frozen_p(VALUE self)
{
	if (OBJ_FROZEN(self)) return Qtrue;
	return Qfalse;
}

#hash ⇒ Object 



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# File 'ext/list/list.c', line 666

static VALUE
list_hash(VALUE self)
{
	item_t *c;
	st_index_t h;
	VALUE n;

	h = rb_hash_start(LIST_LEN(self));
	h = rb_hash_uint(h, (st_index_t)list_hash);
	LIST_FOR(self, c) {
		n = rb_hash(c->value);
		h = rb_hash_uint(h, NUM2LONG(n));
	}
	h = rb_hash_end(h);
	return LONG2FIX(h);
}

#include?(item) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/list/list.c', line 1830

static VALUE
list_include_p(VALUE self, VALUE item)
{
	item_t *c;

	LIST_FOR(self, c) {
		if (rb_equal(c->value, item)) {
			return Qtrue;
		}
	}
	return Qfalse;
}

#initialize_copy(orig) ⇒ Object 



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# File 'ext/list/list.c', line 526

static VALUE
list_replace(VALUE copy, VALUE orig)
{
	item_t *c_orig;
	item_t *c_copy;
	long olen;

	list_modify_check(copy);
	if (copy == orig) return copy;

	switch (rb_type(orig)) {
	case T_ARRAY:
		return list_replace_ary(copy, orig);
	case T_DATA:
		break;
	default:
		rb_raise(rb_eTypeError, "cannot convert to list");
	}
	orig = to_list(orig);
	olen = LIST_LEN(orig);
	if (olen == 0) {
		return list_clear(copy);
	}
	if (olen == LIST_LEN(copy)) {
		LIST_FOR_DOUBLE(orig, c_orig, copy, c_copy, {
			c_copy->value = c_orig->value;
		});
	} else {
		list_clear(copy);
		LIST_FOR(orig, c_orig) {
			list_push(copy, c_orig->value);
		}
	}

	return copy;
}

#insert(*args) ⇒ Object 



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# File 'ext/list/list.c', line 1153

static VALUE
list_insert(int argc, VALUE *argv, VALUE self)
{
	list_t *ptr;
	long pos;

	Data_Get_Struct(self, list_t, ptr);
	rb_check_arity(argc, 1, UNLIMITED_ARGUMENTS);
	list_modify_check(self);
	if (argc == 1) return self;
	pos = NUM2LONG(argv[0]);
	if (pos == -1) {
		pos = LIST_LEN(self);
	}
	if (pos < 0) {
		pos++;
	}
	list_splice(self, pos, 0, rb_ary_new4(argc - 1, argv + 1));
	return self;
}

#inspect ⇒ Object Also known as: to_s 



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# File 'ext/list/list.c', line 584

static VALUE
list_inspect(VALUE self)
{
	if (LIST_LEN(self) == 0)
		return rb_sprintf("#<%s: []>", rb_obj_classname(self));
	return rb_exec_recursive(inspect_list, self, 0);
}

#join(*args) ⇒ Object 



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# File 'ext/list/list.c', line 1361

static VALUE
list_join_m(int argc, VALUE *argv, VALUE self)
{
	VALUE sep;

	rb_scan_args(argc, argv, "01", &sep);
	if (NIL_P(sep)) sep = rb_output_fs;

	return list_join(self, sep);
}

#keep_if ⇒ Object 



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# File 'ext/list/list.c', line 1537

static VALUE
list_keep_if(VALUE self)
{
	RETURN_SIZED_ENUMERATOR(self, 0, 0, list_enum_length);
	list_select_bang(self);
	return self;
}

#last(*args) ⇒ Object 



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# File 'ext/list/list.c', line 1022

static VALUE
list_last(int argc, VALUE *argv, VALUE self)
{
	list_t *ptr;
	long len;

	Data_Get_Struct(self, list_t, ptr);
	if (argc == 0) {
		len = LIST_LEN(self);
		if (len == 0) return Qnil;
		return list_elt(self, len - 1);
	} else {
		return list_take_first_or_last(argc, argv, self, LIST_TAKE_LAST);
	}
}

#length ⇒ Object Also known as: size 



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# File 'ext/list/list.c', line 1174

static VALUE
list_length(VALUE self)
{
	list_t *ptr;
	Data_Get_Struct(self, list_t, ptr);
	return LONG2NUM(LIST_LEN(self));
}

#map ⇒ Object 



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# File 'ext/list/list.c', line 1495

static VALUE
list_collect(VALUE self)
{
	return list_collect_bang(rb_obj_clone(self));
}

#map! ⇒ Object 



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# File 'ext/list/list.c', line 1483

static VALUE
list_collect_bang(VALUE self)
{
	item_t *c;

	RETURN_SIZED_ENUMERATOR(self, 0, 0, list_enum_length);
	LIST_FOR(self, c) {
		c->value = rb_yield(c->value);
	}
	return self;
}

#pack(str) ⇒ Object 



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# File 'ext/list/list.c', line 2535

static VALUE
list_pack(VALUE self, VALUE str)
{
	return list_delegate_rb(1, &str, self, rb_intern("pack"));
}

#permutation(*args) ⇒ Object 



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# File 'ext/list/list.c', line 2358

static VALUE
list_permutation(int argc, VALUE *argv, VALUE self)
{
	return list_delegate_rb(argc, argv, self, rb_intern("permutation"));
}

#pop(*args) ⇒ Object 



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# File 'ext/list/list.c', line 1073

static VALUE
list_pop_m(int argc, VALUE *argv, VALUE self)
{
	VALUE result;
	long n;

	if (argc == 0) {
		return list_pop(self);
	}

	list_modify_check(self);
	result = list_take_first_or_last(argc, argv, self, LIST_TAKE_LAST);
	n = NUM2LONG(argv[0]);
	list_mem_clear(self, LIST_LEN(self) - n, n);
	return result;
}

#product(*args) ⇒ Object 



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# File 'ext/list/list.c', line 2382

static VALUE
list_product(int argc, VALUE *argv, VALUE self)
{
	return list_delegate_rb(argc, argv, self, rb_intern("product"));
}

#push(*args) ⇒ Object 



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# File 'ext/list/list.c', line 375

static VALUE
list_push_m(int argc, VALUE *argv, VALUE self)
{
	long i;

	list_modify_check(self);
	if (argc == 0) return self;
	for (i = 0; i < argc; i++) {
		list_push(self, argv[i]);
	}
	return self;
}

#rassoc(value) ⇒ Object 



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# File 'ext/list/list.c', line 1938

static VALUE
list_rassoc(VALUE self, VALUE value)
{
	VALUE v;
	item_t *c;

	if (list_empty_p(self)) return Qnil;
	LIST_FOR(self, c) {
		v = check_list_type(c->value);
		if (!NIL_P(v)) {
			if (1 < LIST_LEN(v) && rb_equal(list_elt(v,1), value)) {
				return v;
			}
		}
	}
	return Qnil;
}

#reject ⇒ Object 



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# File 'ext/list/list.c', line 1725

static VALUE
list_reject(VALUE self)
{
	VALUE rejected_list;

	RETURN_SIZED_ENUMERATOR(self, 0, 0, list_enum_length);
	rejected_list = list_new();
	reject(self, rejected_list);
	return rejected_list;
}

#reject! ⇒ Object 



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# File 'ext/list/list.c', line 1718

static VALUE
list_reject_bang(VALUE self)
{
	RETURN_SIZED_ENUMERATOR(self, 0, 0, list_enum_length);
	return reject_bang(self);
}

#repeated_combination(num) ⇒ Object 



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# File 'ext/list/list.c', line 2376

static VALUE
list_repeated_combination(VALUE self, VALUE num)
{
	return list_delegate_rb(1, &num, self, rb_intern("repeated_combination"));
}

#repeated_permutation(num) ⇒ Object 



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# File 'ext/list/list.c', line 2370

static VALUE
list_repeated_permutation(VALUE self, VALUE num)
{
	return list_delegate_rb(1, &num, self, rb_intern("repeated_permutation"));
}

#replace(orig) ⇒ Object 



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# File 'ext/list/list.c', line 526

static VALUE
list_replace(VALUE copy, VALUE orig)
{
	item_t *c_orig;
	item_t *c_copy;
	long olen;

	list_modify_check(copy);
	if (copy == orig) return copy;

	switch (rb_type(orig)) {
	case T_ARRAY:
		return list_replace_ary(copy, orig);
	case T_DATA:
		break;
	default:
		rb_raise(rb_eTypeError, "cannot convert to list");
	}
	orig = to_list(orig);
	olen = LIST_LEN(orig);
	if (olen == 0) {
		return list_clear(copy);
	}
	if (olen == LIST_LEN(copy)) {
		LIST_FOR_DOUBLE(orig, c_orig, copy, c_copy, {
			c_copy->value = c_orig->value;
		});
	} else {
		list_clear(copy);
		LIST_FOR(orig, c_orig) {
			list_push(copy, c_orig->value);
		}
	}

	return copy;
}

#reverse ⇒ Object 



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# File 'ext/list/list.c', line 1388

static VALUE
list_reverse_m(VALUE self)
{
	VALUE result;
	item_t *c;

	result = list_new();
	if (LIST_LEN(self) == 0) return result;
	LIST_FOR(self, c) {
		list_unshift(result, c->value);
	}
	return result;
}

#reverse! ⇒ Object 



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# File 'ext/list/list.c', line 1372

static VALUE
list_reverse_bang(VALUE self)
{
	VALUE tmp;
	item_t *c;
	long len;

	if (LIST_LEN(self) == 0) return self;
	tmp = list_to_a(self);
	len = LIST_LEN(self);
	LIST_FOR(self, c) {
		c->value = rb_ary_entry(tmp, --len);
	}
	return self;
}

#rindex(*args) ⇒ Object 



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# File 'ext/list/list.c', line 1192

static VALUE
list_rindex(int argc, VALUE *argv, VALUE self)
{
	long i;
	long len;
	VALUE val;

	i = LIST_LEN(self);
	if (argc == 0) {
		RETURN_ENUMERATOR(self, 0, 0);
		while (i--) {
			if (RTEST(rb_yield(list_elt(self, i))))
				return LONG2NUM(i);
			if (LIST_LEN(self) < i) {
				i = LIST_LEN(self);
			}
		}
		return Qnil;
	}
	rb_check_arity(argc, 0, 1);
	val = argv[0];
	if (rb_block_given_p())
		rb_warn("given block not used");
	while (i--) {
		if (rb_equal(list_elt(self, i), val)) {
			return LONG2NUM(i);
		}
		len = LIST_LEN(self);
		if (len < i) {
			i = len;
		}
	}
	return Qnil;
}

#ring ⇒ Object 



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# File 'ext/list/list.c', line 2509

static VALUE
list_ring(VALUE self)
{
	VALUE clone = rb_obj_clone(self);
	return list_ring_bang(clone);
}

#ring! ⇒ Object 



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# File 'ext/list/list.c', line 2496

static VALUE
list_ring_bang(VALUE self)
{
	list_t *ptr;

	Data_Get_Struct(self, list_t, ptr);
	if (ptr->first == NULL)
		rb_raise(rb_eRuntimeError, "length is zero list cannot to change ring");
	rb_obj_freeze(self);
	ptr->last->next = ptr->first;
	return self;
}

#ring? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/list/list.c', line 2516

static VALUE
list_ring_p(VALUE self)
{
	list_t *ptr;

	Data_Get_Struct(self, list_t, ptr);
	if (ptr->first == NULL)
		return Qfalse;
	if (ptr->first == ptr->last->next)
		return Qtrue;
	return Qfalse;
}

#rotate(*args) ⇒ Object 



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# File 'ext/list/list.c', line 1430

static VALUE
list_rotate_m(int argc, VALUE *argv, VALUE self)
{
	VALUE clone = rb_obj_clone(self);
	return list_rotate_bang(argc, argv, clone);
}

#rotate!(*args) ⇒ Object 



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# File 'ext/list/list.c', line 1402

static VALUE
list_rotate_bang(int argc, VALUE *argv, VALUE self)
{
	list_t *ptr;
	item_t *c;
	long cnt = 1;
	long i = 0;

	switch (argc) {
	case 1: cnt = NUM2LONG(argv[0]);
	case 0: break;
	default: rb_scan_args(argc, argv, "01", NULL);
	}

	if (LIST_LEN(self) == 0) return self;
	cnt = (cnt < 0) ? (LIST_LEN(self) - (~cnt % LIST_LEN(self)) - 1) : (cnt & LIST_LEN(self));
	Data_Get_Struct(self, list_t, ptr);
	LIST_FOR(self, c) {
		if (cnt == ++i) break;
	}

	ptr->last->next = ptr->first;
	ptr->first = c->next;
	ptr->last = c;
	ptr->last->next = NULL;
	return self;
}

#sample(*args) ⇒ Object 



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# File 'ext/list/list.c', line 2326

static VALUE
list_sample(int argc, VALUE *argv, VALUE self)
{
	return list_delegate_rb(argc, argv, self, rb_intern("sample"));
}

#select ⇒ Object 



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# File 'ext/list/list.c', line 1501

static VALUE
list_select(VALUE self)
{
	VALUE result;
	item_t *c;

	RETURN_SIZED_ENUMERATOR(self, 0, 0, list_enum_length);
	result = list_new();
	LIST_FOR(self, c) {
		if (RTEST(rb_yield(c->value))) {
			list_push(result, c->value);
		}
	}
	return result;
}

#select! ⇒ Object 



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# File 'ext/list/list.c', line 1517

static VALUE
list_select_bang(VALUE self)
{
	VALUE result;
	item_t *c;
	long i = 0;

	RETURN_SIZED_ENUMERATOR(self, 0, 0, list_enum_length);
	result = list_new();
	LIST_FOR(self, c) {
		if (RTEST(rb_yield(c->value))) {
			i++;
			list_push(result, c->value);
		}
	}

	if (i == LIST_LEN(self)) return Qnil;
	return list_replace(self, result);
}

#shift(*args) ⇒ Object 



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# File 'ext/list/list.c', line 1101

static VALUE
list_shift_m(int argc, VALUE *argv, VALUE self)
{
	VALUE result;
	long i;
	list_t *ptr;

	if (argc == 0) {
		return list_shift(self);
	}

	list_modify_check(self);
	result = list_take_first_or_last(argc, argv, self, LIST_TAKE_FIRST);
	Data_Get_Struct(result, list_t, ptr);
	for (i = 0; i < LIST_LEN(self); i++) {
		list_shift(self);
	}
	return result;
}

#shuffle(*args) ⇒ Object 



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# File 'ext/list/list.c', line 2314

static VALUE
list_shuffle(int argc, VALUE *argv, VALUE self)
{
	return list_delegate_rb(argc, argv, self, rb_intern("shuffle"));
}

#shuffle!(*args) ⇒ Object 



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# File 'ext/list/list.c', line 2320

static VALUE
list_shuffle_bang(int argc, VALUE *argv, VALUE self)
{
	return list_replace(self, list_shuffle(argc, argv, self));
}

#slice(*args) ⇒ Object 



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# File 'ext/list/list.c', line 761

static VALUE
list_aref(int argc, VALUE *argv, VALUE self)
{
	VALUE arg;
	long beg, len;
	list_t *ptr;

	Data_Get_Struct(self, list_t, ptr);
	if (argc == 2) {
		beg = NUM2LONG(argv[0]);
		len = NUM2LONG(argv[1]);
		if (beg < 0) {
			beg += LIST_LEN(self);
		}
		return list_subseq(self, beg, len);
	}
	if (argc != 1) {
		rb_scan_args(argc, argv, "11", NULL, NULL);
	}
	arg = argv[0];

	/* special case - speeding up */
	if (FIXNUM_P(arg)) {
		return list_entry(self, FIX2LONG(arg));
	}
	/* check if idx is Range */
	switch (rb_range_beg_len(arg, &beg, &len, LIST_LEN(self), 0)) {
	case Qfalse:
		break;
	case Qnil:
		return Qnil;
	default:
		return list_subseq(self, beg, len);
	}
	return list_entry(self, NUM2LONG(arg));
}

#slice!(*args) ⇒ Object 



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# File 'ext/list/list.c', line 1879

static VALUE
list_slice_bang(int argc, VALUE *argv, VALUE self)
{
	long pos = 0, len = 0;

	list_modify_check(self);
	if (argc == 1) {
		if (FIXNUM_P(argv[0])) {
			return list_delete_at(self, NUM2LONG(argv[0]));
		} else {
			switch (rb_range_beg_len(argv[0], &pos, &len, LIST_LEN(self), 0)) {
			case Qtrue: /* valid range */
				break;
			case Qnil: /* invalid range */
				return Qnil;
			default: /* not a range */
				return list_delete_at(self, NUM2LONG(argv[0]));
			}
		}
	} else if (argc == 2) {
		pos = NUM2LONG(argv[0]);
		len = NUM2LONG(argv[1]);
	} else {
		rb_scan_args(argc, argv, "11", NULL, NULL);
	}
	if (len < 0) return Qnil;
	if (pos < 0) {
		pos += LIST_LEN(self);
		if (pos < 0) return Qnil;
	} else if (LIST_LEN(self) < pos) {
		return Qnil;
	}
	if (LIST_LEN(self) < pos + len) {
		len = LIST_LEN(self) - pos;
	}
	if (len == 0) return list_new();
	VALUE list2 = list_subseq(self, pos, len);
	list_mem_clear(self, pos, len);
	return list2;
}

#sort ⇒ Object 



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# File 'ext/list/list.c', line 1451

static VALUE
list_sort(VALUE self)
{
	VALUE clone = rb_obj_clone(self);
	return list_sort_bang(clone);
}

#sort! ⇒ Object 



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# File 'ext/list/list.c', line 1437

static VALUE
list_sort_bang(VALUE self)
{
	item_t *c;
	long i = 0;

	VALUE ary = list_to_a(self);
	rb_ary_sort_bang(ary);
	LIST_FOR(self, c) {
		c->value = rb_ary_entry(ary, i++);
	}
	return self;
}

#sort_by ⇒ Object 



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# File 'ext/list/list.c', line 1464

static VALUE
list_sort_by(VALUE self)
{
	VALUE ary;

	RETURN_SIZED_ENUMERATOR(self, 0, 0, list_enum_length);
	ary = rb_block_call(list_to_a(self), rb_intern("sort_by"), 0, 0, sort_by_i, 0);
	return to_list(ary);
}

#sort_by! ⇒ Object 



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# File 'ext/list/list.c', line 1474

static VALUE
list_sort_by_bang(VALUE self)
{
	VALUE sorted;

	sorted = list_sort_by(self);
	return list_replace(self, sorted);
}

#take(n) ⇒ Object 



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# File 'ext/list/list.c', line 2388

static VALUE
list_take(VALUE self, VALUE n)
{
	int len = NUM2LONG(n);

	if (len < 0) {
		rb_raise(rb_eArgError, "attempt to take negative size");
	}
	return list_subseq(self, 0, len);
}

#take_while ⇒ Object 



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# File 'ext/list/list.c', line 2399

static VALUE
list_take_while(VALUE self)
{
	item_t *c;
	long i = 0;

	RETURN_ENUMERATOR(self, 0, 0);
	LIST_FOR(self, c) {
		if (!RTEST(rb_yield(c->value))) break;
		i++;
	}
	return list_take(self, LONG2FIX(i));
}

#to_a ⇒ Object 



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# File 'ext/list/list.c', line 592

static VALUE
list_to_a(VALUE self)
{
	item_t *c;
	VALUE ary;
	long i = 0;

	ary = rb_ary_new2(LIST_LEN(self));
	LIST_FOR(self, c) {
		rb_ary_store(ary, i++, c->value);
	}
	return ary;
}

#to_ary ⇒ Object 



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# File 'ext/list/list.c', line 592

static VALUE
list_to_a(VALUE self)
{
	item_t *c;
	VALUE ary;
	long i = 0;

	ary = rb_ary_new2(LIST_LEN(self));
	LIST_FOR(self, c) {
		rb_ary_store(ary, i++, c->value);
	}
	return ary;
}

#to_list ⇒ Object 



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# File 'ext/list/list.c', line 2529

static VALUE
list_to_list(VALUE self)
{
	return self;
}

#transpose ⇒ Object 



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# File 'ext/list/list.c', line 1761

static VALUE
list_transpose(VALUE self)
{
	return list_delegate_rb(0, NULL, self, rb_intern("transpose"));
}

#uniq ⇒ Object 



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# File 'ext/list/list.c', line 2154

static VALUE
list_uniq(VALUE self)
{
	VALUE hash, uniq;

	if (LIST_LEN(self) <= 1)
		return list_dup(self);

	if (rb_block_given_p()) {
		hash = list_make_hash_by(self);
	} else {
		hash = list_make_hash(self);
	}
	uniq = list_hash_values(hash);
	return uniq;
}

#uniq! ⇒ Object 



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# File 'ext/list/list.c', line 2171

static VALUE
list_uniq_bang(VALUE self)
{
	long len;

	list_modify_check(self);
	len = LIST_LEN(self);
	if (len <= 1)
		return Qnil;

	list_replace(self, list_uniq(self));
	if (len == LIST_LEN(self)) {
		return Qnil;
	}

	return self;
}

#unshift(*args) ⇒ Object 



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# File 'ext/list/list.c', line 1140

static VALUE
list_unshift_m(int argc, VALUE *argv, VALUE self)
{
	long i;

	list_modify_check(self);
	if (argc == 0) return self;
	for (i = argc - 1; 0 <= i; i--) {
		list_unshift(self, argv[i]);
	}
	return self;
}

#values_at(*args) ⇒ Object 



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# File 'ext/list/list.c', line 1545

static VALUE
list_values_at(int argc, VALUE *argv, VALUE self)
{
	VALUE result = list_new();
	long beg, len;
	long i, j;
	list_t *ptr;

	Data_Get_Struct(self, list_t, ptr);
	for (i = 0; i < argc; i++) {
		if (FIXNUM_P(argv[i])) {
			list_push(result, list_entry(self, FIX2LONG(argv[i])));
		} else if (rb_range_beg_len(argv[i], &beg, &len, LIST_LEN(self), 1)) {
			for (j = beg; j < beg + len; j++) {
				if (LIST_LEN(self) < j) {
					list_push(result, Qnil);
				} else {
					list_push(result, list_elt(self, j));
				}
			}
		} else {
			list_push(result, list_entry(self, NUM2LONG(argv[i])));
		}
	}
	return result;
}

#zip(*args) ⇒ Object 



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# File 'ext/list/list.c', line 1744

static VALUE
list_zip(int argc, VALUE *argv, VALUE self)
{
	VALUE ary;
	long i;

	ary = rb_funcall2(list_to_a(self), rb_intern("zip"), argc, argv);
	if (rb_block_given_p()) {
		for (i = 0; i < RARRAY_LEN(ary); i++) {
			rb_yield(rb_ary_entry(ary, i));
		}
		return Qnil;
	} else {
		return to_list(ary);
	}
}

#|(list2) ⇒ Object 



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# File 'ext/list/list.c', line 2122

static VALUE
list_or(VALUE list1, VALUE list2)
{
	VALUE hash, list3;
	st_data_t vv;
	item_t *c1, *c2;

	list2 = to_list(list2);
	list3 = list_new();
	hash = list_add_hash(list_make_hash(list1), list2);

	LIST_FOR(list1,c1) {
		vv = (st_data_t)c1->value;
		if (st_delete(RHASH_TBL(hash), &vv, 0)) {
			list_push(list3, c1->value);
		}
	}
	LIST_FOR(list2,c2) {
		vv = (st_data_t)c2->value;
		if (st_delete(RHASH_TBL(hash), &vv, 0)) {
			list_push(list3, c2->value);
		}
	}
	return list3;
}