Class Interval

java.lang.Object
jflex.chars.Interval
All Implemented Interfaces:
Iterable<Integer>
public final class Interval extends Object implements Iterable<Integer>
A mutable interval of characters with basic operations.
Version:
JFlex 1.9.1

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    class 
    Interval.IntervalIterator
    Iterator for enumerating the elements of this Interval

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    int
    end
    End of the interval.
    int
    start
    Start of the interval.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Interval(int start, int end)
    Constructs a new interval from start to end, including both end points.

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    contains(int point)
    Returns true iff point is contained in this interval.
    boolean
    contains(Interval other)
    Return true iff this interval completely contains the other one.
    static Interval
    copyOf(Interval interval)
    Creates a copy of the interval.
    boolean
    equals(Object o)
    Returns true if o is an interval with the same borders.
    int
    hashCode()
     
    boolean
    invariants()
    Checks the invariants of this object.
    private static boolean
    isPrintable(int c)
    Returns whether a character is printable.
    Interval.IntervalIterator
    iterator()
     
    static Interval
    ofCharacter(int c)
    Creates an interval of a single character.
    int
    size()
    Computes the size of this interval.
    String
    toString()
    Returns a String representation of this interval.

    Methods inherited from class Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

    Methods inherited from interface Iterable

    forEach, spliterator

  • Field Details

    • start

      public int start
      Start of the interval.

    • end

      public int end
      End of the interval.

  • Constructor Details

    • Interval

      public Interval(int start, int end)
      Constructs a new interval from start to end, including both end points.
      Parameters:
      start - first codepoint the interval contains
      end - last codepoint the interval contains

  • Method Details

    • contains

      public boolean contains(int point)
      Returns true iff point is contained in this interval.
      Parameters:
      point - the character codepoint to check
      Returns:
      whether the code point is contained in the interval.

    • contains

      public boolean contains(Interval other)
      Return true iff this interval completely contains the other one.
      Parameters:
      other - the other interval
      Returns:
      whether this interval completely contains the other one.

    • equals

      public boolean equals(Object o)
      Returns true if o is an interval with the same borders.
      Overrides:
      equals in class Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • isPrintable

      private static boolean isPrintable(int c)
      Returns whether a character is printable.
      Parameters:
      c - the codepoint to check

    • toString

      public String toString()
      Returns a String representation of this interval.
      Overrides:
      toString in class Object
      Returns:
      a string "[start-end]" or "[start]" (if there is only one character in the interval) where start and end are either a number (the character code) or something of the from 'a'.

    • ofCharacter

      public static Interval ofCharacter(int c)
      Creates an interval of a single character.
      Parameters:
      c - The unique codepoint contained in this interval.
      Returns:
      A single-character interval.

    • copyOf

      public static Interval copyOf(Interval interval)
      Creates a copy of the interval.
      Returns:
      the copy of the given interval.

    • size

      public int size()
      Computes the size of this interval.
      Returns:
      how many characters this interval spans

    • invariants

      public boolean invariants()
      Checks the invariants of this object.
      Returns:
      true when the invariants of this objects hold.

    • iterator

      public Interval.IntervalIterator iterator()
      Specified by:
      iterator in interface Iterable<Integer>