org.eclipse.mtl.parser.cst.utils
Class Region

java.lang.Object
  org.eclipse.mtl.parser.cst.utils.Region

public class Region
extends java.lang.Object

A region with a beginning index and an ending index.

Field Summary

static Region

NOT_FOUND To specify that the region doesn't exist.

Constructor Summary

Region(int b, int e, Sequence sequence)
Constructor.

Method Summary

int	b() Gets the beginning index.
static Region[]	createPositions(int length) Initializes a table of region.
int	e() Gets the ending index.
boolean	equals(java.lang.Object arg0)
Sequence	getSequence() Gets the sequence used to match the region.
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

NOT_FOUND

public static final Region NOT_FOUND

To specify that the region doesn't exist.

Constructor Detail

Region

public Region(int b,
              int e,
              Sequence sequence)

Constructor.

Parameters:

b - is the beginning index of a substring

e - is the ending index of a substring

sequence - is the sequence used to match the region

Method Detail

b

public int b()

Gets the beginning index.

Returns:

the beginning index.

e

public int e()

Gets the ending index.

Returns:

the ending index.

getSequence

public Sequence getSequence()

Gets the sequence used to match the region.

Returns:

the sequence used to match the region

equals

public boolean equals(java.lang.Object arg0)

Overrides:

equals in class java.lang.Object

See Also:

Object.equals(java.lang.Object)

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

See Also:

Object.hashCode()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

See Also:

Object.toString()

createPositions

public static Region[] createPositions(int length)

Initializes a table of region.

Parameters:

length - is the length of the table to create

Returns:

the table, each element is a Region(-2, -2, null)