@Beta public final class ImmutableRangeSet<C extends Comparable> extends Object implements Serializable
RangeSet
whose contents will never change, with many other important properties
detailed at ImmutableCollection
.Modifier and Type | Class and Description |
---|---|
static class |
ImmutableRangeSet.Builder<C extends Comparable<?>>
A builder for immutable range sets.
|
Modifier and Type | Method and Description |
---|---|
void |
add(Range<C> range)
Adds the specified range to this
RangeSet (optional operation). |
void |
addAll(RangeSet<C> other)
Adds all of the ranges from the specified range set to this range set (optional operation).
|
ImmutableSet<Range<C>> |
asDescendingSetOfRanges()
Returns a descending view of the disconnected ranges that
make up this range set.
|
ImmutableSet<Range<C>> |
asRanges()
Returns a view of the disconnected ranges that make up this
range set.
|
ImmutableSortedSet<C> |
asSet(DiscreteDomain<C> domain)
Returns an
ImmutableSortedSet containing the same values in the given domain
contained by this range set. |
static <C extends Comparable<?>> |
builder()
Returns a new builder for an immutable range set.
|
void |
clear()
Removes all ranges from this
RangeSet (optional operation). |
ImmutableRangeSet<C> |
complement()
Returns a view of the complement of this
RangeSet . |
boolean |
contains(C value)
Determines whether any of this range set's member ranges contains
value . |
static <C extends Comparable> |
copyOf(RangeSet<C> rangeSet)
Returns an immutable copy of the specified
RangeSet . |
boolean |
encloses(Range<C> otherRange)
Returns
true if there exists a member range in this range set which
encloses the specified range. |
boolean |
enclosesAll(RangeSet<C> other)
Returns
true if for each member range in other there exists a member range in
this range set which encloses it. |
boolean |
equals(Object obj)
Returns
true if obj is another RangeSet that contains the same ranges
according to Range.equals(Object) . |
int |
hashCode()
Returns
asRanges().hashCode() . |
boolean |
isEmpty()
Returns
true if this range set contains no ranges. |
static <C extends Comparable> |
of()
Returns an empty immutable range set.
|
static <C extends Comparable> |
of(Range<C> range)
Returns an immutable range set containing the specified single range.
|
Range<C> |
rangeContaining(C value)
Returns the unique range from this range set that contains
value , or null if this range set does not contain value . |
void |
remove(Range<C> range)
Removes the specified range from this
RangeSet (optional operation). |
void |
removeAll(RangeSet<C> other)
Removes all of the ranges from the specified range set from this range set (optional
operation).
|
Range<C> |
span()
Returns the minimal range which encloses all ranges
in this range set.
|
ImmutableRangeSet<C> |
subRangeSet(Range<C> range)
Returns a view of the intersection of this range set with the given range.
|
String |
toString()
Returns a readable string representation of this range set.
|
public static <C extends Comparable> ImmutableRangeSet<C> of()
public static <C extends Comparable> ImmutableRangeSet<C> of(Range<C> range)
range.isEmpty()
, this is equivalent to of()
.public static <C extends Comparable> ImmutableRangeSet<C> copyOf(RangeSet<C> rangeSet)
RangeSet
.public boolean encloses(Range<C> otherRange)
RangeSet
true
if there exists a member range in this range set which
encloses the specified range.encloses
in interface RangeSet<C extends Comparable>
public Range<C> rangeContaining(C value)
RangeSet
value
, or null
if this range set does not contain value
.rangeContaining
in interface RangeSet<C extends Comparable>
public Range<C> span()
RangeSet
span
in interface RangeSet<C extends Comparable>
public boolean isEmpty()
RangeSet
true
if this range set contains no ranges.isEmpty
in interface RangeSet<C extends Comparable>
public void add(Range<C> range)
RangeSet
RangeSet
(optional operation). That is, for equal
range sets a and b, the result of a.add(range)
is that a
will be the minimal
range set for which both a.enclosesAll(b)
and a.encloses(range)
.
Note that range
will be coalesced with any ranges in
the range set that are connected with it. Moreover,
if range
is empty, this is a no-op.
add
in interface RangeSet<C extends Comparable>
public void addAll(RangeSet<C> other)
RangeSet
other
.
This is equivalent to calling RangeSet.add(com.google.common.collect.Range<C>)
on each of the ranges in other
in turn.
addAll
in interface RangeSet<C extends Comparable>
public void remove(Range<C> range)
RangeSet
RangeSet
(optional operation). After this
operation, if range.contains(c)
, this.contains(c)
will return false
.
If range
is empty, this is a no-op.
remove
in interface RangeSet<C extends Comparable>
public void removeAll(RangeSet<C> other)
RangeSet
other.contains(c)
, this.contains(c)
will
return false
.
This is equivalent to calling RangeSet.remove(com.google.common.collect.Range<C>)
on each of the ranges in other
in
turn.
removeAll
in interface RangeSet<C extends Comparable>
public ImmutableSet<Range<C>> asRanges()
RangeSet
Iterable.iterator()
method return the ranges in increasing order of lower bound
(equivalently, of upper bound).asRanges
in interface RangeSet<C extends Comparable>
public ImmutableSet<Range<C>> asDescendingSetOfRanges()
RangeSet
Iterable.iterator()
method return the ranges in decreasing order of lower bound
(equivalently, of upper bound).asDescendingSetOfRanges
in interface RangeSet<C extends Comparable>
public ImmutableRangeSet<C> complement()
RangeSet
RangeSet
.
The returned view supports the RangeSet.add(com.google.common.collect.Range<C>)
operation if this RangeSet
supports
RangeSet.remove(com.google.common.collect.Range<C>)
, and vice versa.
complement
in interface RangeSet<C extends Comparable>
public ImmutableRangeSet<C> subRangeSet(Range<C> range)
subRangeSet
in interface RangeSet<C extends Comparable>
public ImmutableSortedSet<C> asSet(DiscreteDomain<C> domain)
ImmutableSortedSet
containing the same values in the given domain
contained by this range set.
Note: a.asSet(d).equals(b.asSet(d))
does not imply a.equals(b)
! For
example, a
and b
could be [2..4]
and (1..5)
, or the empty
ranges [3..3)
and [4..4)
.
Warning: Be extremely careful what you do with the asSet
view of a large
range set (such as ImmutableRangeSet.of(Range.greaterThan(0))
). Certain operations on
such a set can be performed efficiently, but others (such as Set.hashCode()
or
Collections.frequency(java.util.Collection<?>, java.lang.Object)
) can cause major performance problems.
The returned set's Object.toString()
method returns a short-hand form of the set's
contents, such as "[1..100]
"}.
IllegalArgumentException
- if neither this range nor the domain has a lower bound, or if
neither has an upper boundpublic static <C extends Comparable<?>> ImmutableRangeSet.Builder<C> builder()
public boolean contains(C value)
RangeSet
value
.contains
in interface RangeSet<C extends Comparable>
public void clear()
RangeSet
RangeSet
(optional operation). After this operation,
this.contains(c)
will return false for all c
.
This is equivalent to remove(Range.all())
.
clear
in interface RangeSet<C extends Comparable>
public boolean enclosesAll(RangeSet<C> other)
RangeSet
true
if for each member range in other
there exists a member range in
this range set which encloses it. It follows that
this.contains(value)
whenever other.contains(value)
. Returns true
if
other
is empty.
This is equivalent to checking if this range set RangeSet.encloses(com.google.common.collect.Range<C>)
each of the ranges in
other
.
enclosesAll
in interface RangeSet<C extends Comparable>
public boolean equals(@Nullable Object obj)
RangeSet
true
if obj
is another RangeSet
that contains the same ranges
according to Range.equals(Object)
.equals
in interface RangeSet<C extends Comparable>
equals
in class Object
public final int hashCode()
RangeSet
asRanges().hashCode()
.hashCode
in interface RangeSet<C extends Comparable>
hashCode
in class Object
public final String toString()
RangeSet
RangeSet
consisted of Range.closed(1, 3)
and Range.greaterThan(4)
,
this might return " [1‥3](4‥+∞)
"}.toString
in interface RangeSet<C extends Comparable>
toString
in class Object
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