X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fcom%2Fstevesoft%2Fpat%2FBackup.java;h=6602acae77541635ae58a8675753e3a7c571d1f7;hb=83c47970701adc1cd6100332544f7f563e71f8f5;hp=df480ea6a4e38ffd4624d423e573420343fdbf9e;hpb=c40cf903f740a72ab63dd1abc10fa33450ce660d;p=jalview.git

diff --git a/src/com/stevesoft/pat/Backup.java b/src/com/stevesoft/pat/Backup.java
index df480ea..6602aca 100755
--- a/src/com/stevesoft/pat/Backup.java
+++ b/src/com/stevesoft/pat/Backup.java
@@ -1,27 +1,54 @@
-//
-// This software is now distributed according to
-// the Lesser Gnu Public License.  Please see
-// http://www.gnu.org/copyleft/lesser.txt for
-// the details.
-//    -- Happy Computing!
-//
-package com.stevesoft.pat;
-import java.util.Hashtable;
-
-/** Implements the (?<number) Pattern, where number is
- an integer telling us how far to back up in the Pattern.
- Not in perl 5. It also allows (?>number). */
-class Backup extends Pattern {
-    int bk;
-    Backup(int ii) { bk = ii; }
-    public String toString() {
-        return "(?" + (bk < 0 ? ">" + (-bk) : "<" + bk) + ")" + nextString();
-    }
-    public int matchInternal(int pos,Pthings pt) {
-        if(pos < bk) return -1;
-        return nextMatch(pos-bk,pt);
-    }
-    public patInt minChars() { return new patInt(-bk); }
-    public patInt maxChars() { return new patInt(-bk); }
-    public Pattern clone1(Hashtable h) { return new Backup(bk); }
-};
+//
+// This software is now distributed according to
+// the Lesser Gnu Public License.  Please see
+// http://www.gnu.org/copyleft/lesser.txt for
+// the details.
+//    -- Happy Computing!
+//
+package com.stevesoft.pat;
+
+import java.util.Hashtable;
+
+/**
+ * Implements the (?&lt;number) Pattern, where number is an integer telling us
+ * how far to back up in the Pattern. Not in perl 5. It also allows
+ * (?&gt;number).
+ */
+class Backup extends Pattern
+{
+  int bk;
+
+  Backup(int ii)
+  {
+    bk = ii;
+  }
+
+  public String toString()
+  {
+    return "(?" + (bk < 0 ? ">" + (-bk) : "<" + bk) + ")" + nextString();
+  }
+
+  public int matchInternal(int pos, Pthings pt)
+  {
+    if (pos < bk)
+    {
+      return -1;
+    }
+    return nextMatch(pos - bk, pt);
+  }
+
+  public patInt minChars()
+  {
+    return new patInt(-bk);
+  }
+
+  public patInt maxChars()
+  {
+    return new patInt(-bk);
+  }
+
+  public Pattern clone1(Hashtable h)
+  {
+    return new Backup(bk);
+  }
+};