com.neeve.lang

Interface XBooleanList

All Superinterfaces:

XBooleanCollection

All Known Implementing Classes:

XBooleanIndexedList, XBooleanLinkedList

public interface XBooleanList
extends XBooleanCollection

Defines a list comprised of primitive boolean elements

Method Summary

Methods

Modifier and Type	Method and Description
boolean	add(boolean e) Appends the specified element to the end of this list (optional operation).
void	add(int index, boolean element) Inserts the specified element at the specified position in this list (optional operation).
boolean	addAll(int index, XBooleanCollection c) Inserts all of the elements in the specified collection into this list at the specified position (optional operation).
boolean	addAll(XBooleanCollection c) Appends all of the elements in the specified collection to the end of this list, in the order that they are returned by the specified collection's iterator (optional operation).
void	clear() Removes all of the elements from this list (optional operation).
boolean	contains(boolean o) Returns true if this list contains the specified element.
boolean	containsAll(XBooleanCollection c) Returns true if this list contains all of the elements of the specified collection.
boolean	equals(Object o) Compares the specified object with this list for equality.
boolean	get(int index) Returns the element at the specified position in this list.
int	hashCode() Returns the hash code value for this list.
int	indexOf(boolean o) Returns the index of the first occurrence of the specified element in this list, or -1 if this list does not contain the element.
boolean	isEmpty() Returns true if this list contains no elements.
XBooleanIterator	iterator() Returns an iterator over the elements in this list in proper sequence.
int	lastIndexOf(boolean o) Returns the index of the last occurrence of the specified element in this list, or -1 if this list does not contain the element.
XBooleanListIterator	listIterator() Returns a list iterator over the elements in this list (in proper sequence).
XBooleanListIterator	listIterator(int index) Returns a list iterator over the elements in this list (in proper sequence), starting at the specified position in the list.
boolean	remove(boolean o) Removes the first occurrence of the specified element from this list, if it is present (optional operation).
boolean	remove(int index) Removes the element at the specified position in this list (optional operation).
boolean	removeAll(XBooleanCollection c) Removes from this list all of its elements that are contained in the specified collection (optional operation).
boolean	retainAll(XBooleanCollection c) Retains only the elements in this list that are contained in the specified collection (optional operation).
boolean	set(int index, boolean element) Replaces the element at the specified position in this list with the specified element (optional operation).
int	size() Returns the number of elements in this list.
XBooleanList	subList(int fromIndex, int toIndex) Returns a view of the portion of this list between the specified fromIndex, inclusive, and toIndex, exclusive.
boolean[]	toArray() Returns an array containing all of the elements in this list in proper sequence (from first to last element).
boolean[]	toArray(boolean[] a) Returns an array containing all of the elements in this list in proper sequence (from first to last element); the runtime type of the returned array is that of the specified array.

Methods inherited from interface com.neeve.lang.XBooleanCollection

delete, head, reusableIterator, shared, supportsIteratorModifications, tail, unmodifiable, valueOf

Method Detail

size

int size()

Returns the number of elements in this list. If this list contains more than Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.

Specified by:

size in interface XBooleanCollection

Returns:

the number of elements in this list

isEmpty

boolean isEmpty()

Returns true if this list contains no elements.

Specified by:

isEmpty in interface XBooleanCollection

Returns:

true if this list contains no elements

contains

boolean contains(boolean o)

Returns true if this list contains the specified element. More formally, returns true if and only if this list contains at least one element e such that (o==null ? e==null : o.equals(e)).

Specified by:

contains in interface XBooleanCollection

Parameters:

o - element whose presence in this list is to be tested

Returns:

true if this list contains the specified element

iterator

XBooleanIterator iterator()

Returns an iterator over the elements in this list in proper sequence.

Specified by:

iterator in interface XBooleanCollection

Returns:

an iterator over the elements in this list in proper sequence

toArray

boolean[] toArray()

Returns an array containing all of the elements in this list in proper sequence (from first to last element).

The returned array will be "safe" in that no references to it are maintained by this list. (In other words, this method must allocate a new array even if this list is backed by an array). The caller is thus free to modify the returned array.

This method acts as bridge between array-based and collection-based APIs.

Specified by:

toArray in interface XBooleanCollection

Returns:

an array containing all of the elements in this list in proper sequence

toArray

boolean[] toArray(boolean[] a)

Returns an array containing all of the elements in this list in proper sequence (from first to last element); the runtime type of the returned array is that of the specified array. If the list fits in the specified array, it is returned therein. Otherwise, a new array is allocated with the runtime type of the specified array and the size of this list.

If the list fits in the specified array with room to spare (i.e., the array has more elements than the list), the element in the array immediately following the end of the list is set to null. (This is useful in determining the length of the list only if the caller knows that the list does not contain any null elements.)

Like the toArray() method, this method acts as bridge between array-based and collection-based APIs. Further, this method allows precise control over the runtime type of the output array, and may, under certain circumstances, be used to save allocation costs.

Suppose x is a list known to contain only strings. The following code can be used to dump the list into a newly allocated array of String:

     String[] y = x.toArray(new String[0]);

Note that toArray(new Object[0]) is identical in function to toArray().

Specified by:

toArray in interface XBooleanCollection

Parameters:

a - the array into which the elements of this list are to be stored, if it is big enough; otherwise, a new array of the same runtime type is allocated for this purpose.

Returns:

an array containing the elements of this list

Throws:

ArrayStoreException - if the runtime type of the specified array is not a supertype of the runtime type of every element in this list

NullPointerException - if the specified array is null

add

boolean add(boolean e)

Appends the specified element to the end of this list (optional operation).

Lists that support this operation may place limitations on what elements may be added to this list. In particular, some lists will refuse to add null elements, and others will impose restrictions on the type of elements that may be added. List classes should clearly specify in their documentation any restrictions on what elements may be added.

Specified by:

add in interface XBooleanCollection

Parameters:

e - element to be appended to this list

Returns:

true (as specified by XBooleanCollection.add(boolean))

Throws:

UnsupportedOperationException - if the add operation is not supported by this list

ClassCastException - if the class of the specified element prevents it from being added to this list

NullPointerException - if the specified element is null and this list does not permit null elements

IllegalArgumentException - if some property of this element prevents it from being added to this list

remove

boolean remove(boolean o)

Removes the first occurrence of the specified element from this list, if it is present (optional operation). If this list does not contain the element, it is unchanged. More formally, removes the element with the lowest index i such that (o==null ? get(i)==null : o.equals(get(i))) (if such an element exists). Returns true if this list contained the specified element (or equivalently, if this list changed as a result of the call).

Specified by:

remove in interface XBooleanCollection

Parameters:

o - element to be removed from this list, if present

Returns:

true if this list contained the specified element

containsAll

boolean containsAll(XBooleanCollection c)

Returns true if this list contains all of the elements of the specified collection.

Specified by:

containsAll in interface XBooleanCollection

Parameters:

c - collection to be checked for containment in this list

Returns:

true if this list contains all of the elements of the specified collection

See Also:

contains(boolean)

addAll

boolean addAll(XBooleanCollection c)

Appends all of the elements in the specified collection to the end of this list, in the order that they are returned by the specified collection's iterator (optional operation). The behavior of this operation is undefined if the specified collection is modified while the operation is in progress. (Note that this will occur if the specified collection is this list, and it's nonempty.)

Specified by:

addAll in interface XBooleanCollection

Parameters:

c - collection containing elements to be added to this list

Returns:

true if this list changed as a result of the call

Throws:

UnsupportedOperationException - if the addAll operation is not supported by this list

See Also:

add(boolean)

addAll

boolean addAll(int index,
             XBooleanCollection c)

Inserts all of the elements in the specified collection into this list at the specified position (optional operation). Shifts the element currently at that position (if any) and any subsequent elements to the right (increases their indices). The new elements will appear in this list in the order that they are returned by the specified collection's iterator. The behavior of this operation is undefined if the specified collection is modified while the operation is in progress. (Note that this will occur if the specified collection is this list, and it's nonempty.)

Parameters:

index - index at which to insert the first element from the specified collection

c - collection containing elements to be added to this list

Returns:

true if this list changed as a result of the call

Throws:

UnsupportedOperationException - if the addAll operation is not supported by this list

IndexOutOfBoundsException - if the index is out of range (index < 0 || index > size())

removeAll

boolean removeAll(XBooleanCollection c)

Removes from this list all of its elements that are contained in the specified collection (optional operation).

Specified by:

removeAll in interface XBooleanCollection

Parameters:

c - collection containing elements to be removed from this list

Returns:

true if this list changed as a result of the call

Throws:

UnsupportedOperationException - if the removeAll operation is not supported by this list

See Also:

remove(boolean), contains(boolean)

retainAll

boolean retainAll(XBooleanCollection c)

Retains only the elements in this list that are contained in the specified collection (optional operation). In other words, removes from this list all of its elements that are not contained in the specified collection.

Specified by:

retainAll in interface XBooleanCollection

Parameters:

c - collection containing elements to be retained in this list

Returns:

true if this list changed as a result of the call

Throws:

UnsupportedOperationException - if the retainAll operation is not supported by this list

See Also:

remove(boolean), contains(boolean)

clear

void clear()

Removes all of the elements from this list (optional operation). The list will be empty after this call returns.

Specified by:

clear in interface XBooleanCollection

Throws:

UnsupportedOperationException - if the clear operation is not supported by this list

equals

boolean equals(Object o)

Compares the specified object with this list for equality. Returns true if and only if the specified object is also a list, both lists have the same size, and all corresponding pairs of elements in the two lists are equal. (Two elements e1 and e2 are equal if (e1==null ? e2==null : e1.equals(e2)).) In other words, two lists are defined to be equal if they contain the same elements in the same order. This definition ensures that the equals method works properly across different implementations of the List interface.

Specified by:

equals in interface XBooleanCollection

Overrides:

equals in class Object

Parameters:

o - the object to be compared for equality with this list

Returns:

true if the specified object is equal to this list

hashCode

int hashCode()

Returns the hash code value for this list. The hash code of a list is defined to be the result of the following calculation:

  int hashCode = 1;
  for (E e : list)
      hashCode = 31*hashCode + (e==null ? 0 : e.hashCode());
 

This ensures that list1.equals(list2) implies that list1.hashCode()==list2.hashCode() for any two lists, list1 and list2, as required by the general contract of Object.hashCode().

Specified by:

hashCode in interface XBooleanCollection

Overrides:

hashCode in class Object

Returns:

the hash code value for this list

See Also:

Object.equals(Object), equals(Object)

get

boolean get(int index)

Returns the element at the specified position in this list.

Parameters:

index - index of the element to return

Returns:

the element at the specified position in this list

Throws:

IndexOutOfBoundsException - if the index is out of range (index < 0 || index >= size())

set

boolean set(int index,
          boolean element)

Replaces the element at the specified position in this list with the specified element (optional operation).

Parameters:

index - index of the element to replace

element - element to be stored at the specified position

Returns:

the element previously at the specified position

Throws:

UnsupportedOperationException - if the set operation is not supported by this list

IndexOutOfBoundsException - if the index is out of range (index < 0 || index >= size())

add

void add(int index,
       boolean element)

Inserts the specified element at the specified position in this list (optional operation). Shifts the element currently at that position (if any) and any subsequent elements to the right (adds one to their indices).

Parameters:

index - index at which the specified element is to be inserted

element - element to be inserted

Throws:

UnsupportedOperationException - if the add operation is not supported by this list

IndexOutOfBoundsException - if the index is out of range (index < 0 || index > size())

remove

boolean remove(int index)

Removes the element at the specified position in this list (optional operation). Shifts any subsequent elements to the left (subtracts one from their indices). Returns the element that was removed from the list.

Parameters:

index - the index of the element to be removed

Returns:

the element previously at the specified position

Throws:

UnsupportedOperationException - if the remove operation is not supported by this list

IndexOutOfBoundsException - if the index is out of range (index < 0 || index >= size())

indexOf

int indexOf(boolean o)

Returns the index of the first occurrence of the specified element in this list, or -1 if this list does not contain the element. More formally, returns the lowest index i such that (o==null ? get(i)==null : o.equals(get(i))), or -1 if there is no such index.

Parameters:

o - element to search for

Returns:

the index of the first occurrence of the specified element in this list, or -1 if this list does not contain the element

lastIndexOf

int lastIndexOf(boolean o)

Returns the index of the last occurrence of the specified element in this list, or -1 if this list does not contain the element. More formally, returns the highest index i such that (o==null ? get(i)==null : o.equals(get(i))), or -1 if there is no such index.

Parameters:

o - element to search for

Returns:

the index of the last occurrence of the specified element in this list, or -1 if this list does not contain the element

listIterator

XBooleanListIterator listIterator()

Returns a list iterator over the elements in this list (in proper sequence).

Returns:

a list iterator over the elements in this list (in proper sequence)

listIterator

XBooleanListIterator listIterator(int index)

Returns a list iterator over the elements in this list (in proper sequence), starting at the specified position in the list. The specified index indicates the first element that would be returned by an initial call to next. An initial call to previous would return the element with the specified index minus one.

Parameters:

index - index of the first element to be returned from the list iterator (by a call to next)

Returns:

a list iterator over the elements in this list (in proper sequence), starting at the specified position in the list

Throws:

IndexOutOfBoundsException - if the index is out of range (index < 0 || index > size())

subList

XBooleanList subList(int fromIndex,
                   int toIndex)

Returns a view of the portion of this list between the specified fromIndex, inclusive, and toIndex, exclusive. (If fromIndex and toIndex are equal, the returned list is empty.) The returned list is backed by this list, so non-structural changes in the returned list are reflected in this list, and vice-versa. The returned list supports all of the optional list operations supported by this list.

This method eliminates the need for explicit range operations (of the sort that commonly exist for arrays). Any operation that expects a list can be used as a range operation by passing a subList view instead of a whole list. For example, the following idiom removes a range of elements from a list:

      list.subList(from, to).clear();
 

Similar idioms may be constructed for indexOf and lastIndexOf, and all of the algorithms in the Collections class can be applied to a subList.

The semantics of the list returned by this method become undefined if the backing list (i.e., this list) is structurally modified in any way other than via the returned list. (Structural modifications are those that change the size of this list, or otherwise perturb it in such a fashion that iterations in progress may yield incorrect results.)

Parameters:

fromIndex - low endpoint (inclusive) of the subList

toIndex - high endpoint (exclusive) of the subList

Returns:

a view of the specified range within this list

Throws:

IndexOutOfBoundsException - for an illegal endpoint index value (fromIndex < 0 || toIndex > size || fromIndex > toIndex)