jminusminus

Class NRange

java.lang.Object

jminusminus.NRange

All Implemented Interfaces:

Comparable<NRange>

 class NRange
extends Object
implements Comparable<NRange>

A liveness range (for an interval).

Field Summary

Fields

Modifier and Type	Field and Description
int	start The range's start position.
int	stop The range's stop position.

Constructor Summary

Constructors

Constructor and Description
NRange(int start, int stop) Construct a liveness range extending from start to stop (positions in the code).

Method Summary

Methods

Modifier and Type	Method and Description
int	compareTo(NRange other) One liveness range comes before another if its start position comes before the other's start position.
boolean	rangeOverlaps(NRange a) Does this liveness range overlap with another?
NRange	splitRange(int newStart, int oldStop) Mutates current range to be only as long as the split point and returns the remainder as a new range.
String	toString() The string representation of the range.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

start

public int start

The range's start position.

stop

public int stop

The range's stop position.

Constructor Detail

NRange

public NRange(int start,
      int stop)

Construct a liveness range extending from start to stop (positions in the code).

Parameters:

start - start position.

stop - stop position.

Method Detail

splitRange

public NRange splitRange(int newStart,
                int oldStop)

Mutates current range to be only as long as the split point and returns the remainder as a new range.

Parameters:

newStart - the split location

oldStop - the split location

Returns:

the new NRange which begins at the split position and runs to the end of this previously whole range.

rangeOverlaps

public boolean rangeOverlaps(NRange a)

Does this liveness range overlap with another?

Parameters:

a - The other range.

Returns:

true or false.

compareTo

public int compareTo(NRange other)

One liveness range comes before another if its start position comes before the other's start position.

Specified by:

compareTo in interface Comparable<NRange>

Parameters:

other - the other range.

Returns:

comparison.

toString

public String toString()

The string representation of the range.

Overrides:

toString in class Object

Returns:

"[start,stop]"