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Added overflow safe integer comparison function. Widened.

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git-svn-id: https://samskivert.googlecode.com/svn/trunk@2026 6335cc39-0255-0410-8fd6-9bcaacd3b74c
This commit is contained in:
mdb
2007-01-05 21:51:02 +00:00
parent ad26c89af2
commit 5a9b7251f1
1 changed files with 11 additions and 6 deletions
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src/java/com/samskivert/util/Comparators.java
+11 -6
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@@ -28,11 +28,9 @@ import java.util.Comparator;
public class Comparators
{
/**
* A comparator that compares the toString() value of all objects
* case insensitively.
* A comparator that compares the toString() value of all objects case insensitively.
*/
public static final Comparator<Object> LEXICAL_CASE_INSENSITIVE =
new Comparator<Object>() {
public static final Comparator<Object> LEXICAL_CASE_INSENSITIVE = new Comparator<Object>() {
public int compare (Object o1, Object o2)
{
if (o1 == o2) { // catches null == null
@@ -51,8 +49,7 @@ public class Comparators
/**
* A comparator that compares {@link Comparable} instances.
*/
public static final Comparator<Object> COMPARABLE =
new Comparator<Object>() {
public static final Comparator<Object> COMPARABLE = new Comparator<Object>() {
@SuppressWarnings("unchecked")
public int compare (Object o1, Object o2)
{
@@ -66,4 +63,12 @@ public class Comparators
return ((Comparable<Object>)o1).compareTo(o2); // null-free
}
};
/**
* Compares two integers in an overflow safe manner.
*/
public static int compareTo (int value1, int value2)
{
return (value1 < value2 ? -1 : (value1 == value2 ? 0 : 1));
}
}