From: adam <adam@megacz.com>
Date: Mon, 26 Feb 2007 01:09:31 +0000 (-0500)
Subject: make some methods static in Reduction
X-Git-Url: http://git.megacz.com/?p=sbp.git;a=commitdiff_plain;h=8ec8f459fd34deea534022de6101ac2cf7a16762

make some methods static in Reduction

darcs-hash:20070226010931-5007d-90d0bd5b5a961b8d590e190a47cc3713e4d911ea.gz
---

diff --git a/src/edu/berkeley/sbp/Reduction.java b/src/edu/berkeley/sbp/Reduction.java
index e845764..922c60a 100644
--- a/src/edu/berkeley/sbp/Reduction.java
+++ b/src/edu/berkeley/sbp/Reduction.java
@@ -45,13 +45,13 @@ final class Reduction implements Comparable<Reduction> {
         return -1 * ret;
     }
 
-    private boolean isRightNullable(Walk.Cache c, Position p) {
+    private static boolean isRightNullable(Walk.Cache c, Position p) {
         if (p.isLast()) return true;
         if (!c.possiblyEpsilon(p.element())) return false;
         return isRightNullable(c, p.next());
     }
 
-    public boolean canKill(Walk.Cache cache, Position mep, Position himp) {
+    public static boolean canKill(Walk.Cache cache, Position mep, Position himp) {
         if (!isRightNullable(cache, mep))  return false;
         if (!isRightNullable(cache, himp)) return false;
         Sequence me  = mep.owner();
@@ -78,7 +78,7 @@ final class Reduction implements Comparable<Reduction> {
     public int pos() { return targetPhase()==null ? 0 : targetPhase().pos; }
     public GSS.Phase targetPhase() { return node.phase(); }
 
-    public boolean canNeed(Walk.Cache cache, Position mep, Position himp) {
+    public static boolean canNeed(Walk.Cache cache, Position mep, Position himp) {
         if (!isRightNullable(cache, mep))  return false;
         if (!isRightNullable(cache, himp)) return false;
         Sequence me  = mep.owner();