Package com.google.common.collect

Class ImmutableRangeSet<C extends java.lang.Comparable>

  • All Implemented Interfaces:
    RangeSet<C>, java.io.Serializable
    @Beta
public final class ImmutableRangeSet<C extends java.lang.Comparable>
extends java.lang.Object
implements java.io.Serializable
    An efficient immutable implementation of a RangeSet.
    Since:
    14.0
    See Also:
    Serialized Form

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
      static class  ImmutableRangeSet.Builder<C extends java.lang.Comparable<?>>
      A builder for immutable range sets.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method 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>> 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 java.lang.Comparable<?>>
      ImmutableRangeSet.Builder<C>      		 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 java.lang.Comparable>
      ImmutableRangeSet<C>      		 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​(java.lang.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 java.lang.Comparable>
      ImmutableRangeSet<C>      		 of()
      Returns an empty immutable range set.
      static <C extends java.lang.Comparable>
      ImmutableRangeSet<C>      		 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.
      java.lang.String toString()
      Returns a readable string representation of this range set.

      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait

    • Method Detail

      • of

        public static <C extends java.lang.Comparable> ImmutableRangeSet<C> of()
        Returns an empty immutable range set.

      • of

        public static <C extends java.lang.Comparable> ImmutableRangeSet<C> of​(Range<C> range)
        Returns an immutable range set containing the specified single range. If range.isEmpty(), this is equivalent to of().

      • copyOf

        public static <C extends java.lang.Comparable> ImmutableRangeSet<C> copyOf​(RangeSet<C> rangeSet)
        Returns an immutable copy of the specified RangeSet.

      • encloses

        public boolean encloses​(Range<C> otherRange)
        Description copied from interface: RangeSet
        Returns true if there exists a member range in this range set which encloses the specified range.
        Specified by:
        encloses in interface RangeSet<C extends java.lang.Comparable>

      • rangeContaining

        public Range<C> rangeContaining​(C value)
        Description copied from interface: RangeSet
        Returns the unique range from this range set that contains value, or null if this range set does not contain value.
        Specified by:
        rangeContaining in interface RangeSet<C extends java.lang.Comparable>

      • span

        public Range<C> span()
        Description copied from interface: RangeSet
        Returns the minimal range which encloses all ranges in this range set.
        Specified by:
        span in interface RangeSet<C extends java.lang.Comparable>

      • isEmpty

        public boolean isEmpty()
        Description copied from interface: RangeSet
        Returns true if this range set contains no ranges.
        Specified by:
        isEmpty in interface RangeSet<C extends java.lang.Comparable>

      • add

        public void add​(Range<C> range)
        Description copied from interface: RangeSet
        Adds the specified range to this 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.

        Specified by:
        add in interface RangeSet<C extends java.lang.Comparable>

      • addAll

        public void addAll​(RangeSet<C> other)
        Description copied from interface: RangeSet
        Adds all of the ranges from the specified range set to this range set (optional operation). After this operation, this range set is the minimal range set that encloses both the original range set and other.

        This is equivalent to calling RangeSet.add(com.google.common.collect.Range<C>) on each of the ranges in other in turn.

        Specified by:
        addAll in interface RangeSet<C extends java.lang.Comparable>

      • remove

        public void remove​(Range<C> range)
        Description copied from interface: RangeSet
        Removes the specified range from this 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.

        Specified by:
        remove in interface RangeSet<C extends java.lang.Comparable>

      • removeAll

        public void removeAll​(RangeSet<C> other)
        Description copied from interface: RangeSet
        Removes all of the ranges from the specified range set from this range set (optional operation). After this operation, if 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.

        Specified by:
        removeAll in interface RangeSet<C extends java.lang.Comparable>

      • asRanges

        public ImmutableSet<Range<C>> asRanges()
        Description copied from interface: RangeSet
        Returns a view of the disconnected ranges that make up this range set. The returned set may be empty. The iterators returned by its Iterable.iterator() method return the ranges in increasing order of lower bound (equivalently, of upper bound).
        Specified by:
        asRanges in interface RangeSet<C extends java.lang.Comparable>

      • subRangeSet

        public ImmutableRangeSet<C> subRangeSet​(Range<C> range)
        Returns a view of the intersection of this range set with the given range.
        Specified by:
        subRangeSet in interface RangeSet<C extends java.lang.Comparable>

      • asSet

        public ImmutableSortedSet<C> asSet​(DiscreteDomain<C> domain)
        Returns an 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]"}.

        Throws:
        java.lang.IllegalArgumentException - if neither this range nor the domain has a lower bound, or if neither has an upper bound

      • builder

        public static <C extends java.lang.Comparable<?>> ImmutableRangeSet.Builder<C> builder()
        Returns a new builder for an immutable range set.

      • contains

        public boolean contains​(C value)
        Description copied from interface: RangeSet
        Determines whether any of this range set's member ranges contains value.
        Specified by:
        contains in interface RangeSet<C extends java.lang.Comparable>

      • clear

        public void clear()
        Description copied from interface: RangeSet
        Removes all ranges from this RangeSet (optional operation). After this operation, this.contains(c) will return false for all c.

        This is equivalent to remove(Range.all()).

        Specified by:
        clear in interface RangeSet<C extends java.lang.Comparable>

      • enclosesAll

        public boolean enclosesAll​(RangeSet<C> other)
        Description copied from interface: RangeSet
        Returns 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.

        Specified by:
        enclosesAll in interface RangeSet<C extends java.lang.Comparable>

      • equals

        public boolean equals​(@Nullable
                      java.lang.Object obj)
        Description copied from interface: RangeSet
        Returns true if obj is another RangeSet that contains the same ranges according to Range.equals(Object).
        Specified by:
        equals in interface RangeSet<C extends java.lang.Comparable>
        Overrides:
        equals in class java.lang.Object

      • hashCode

        public final int hashCode()
        Description copied from interface: RangeSet
        Returns asRanges().hashCode().
        Specified by:
        hashCode in interface RangeSet<C extends java.lang.Comparable>
        Overrides:
        hashCode in class java.lang.Object

      • toString

        public final java.lang.String toString()
        Description copied from interface: RangeSet
        Returns a readable string representation of this range set. For example, if this RangeSet consisted of Range.closed(1, 3) and Range.greaterThan(4), this might return " [1‥3](4‥+∞)"}.
        Specified by:
        toString in interface RangeSet<C extends java.lang.Comparable>
        Overrides:
        toString in class java.lang.Object