X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fcom%2Fstevesoft%2Fpat%2FlookAhead.java;fp=src%2Fcom%2Fstevesoft%2Fpat%2FlookAhead.java;h=73be36a796c6cc68aadeee26164cb513242a4864;hb=7bc226b58110fa26d9dbd3f0c78095d06909ffc3;hp=112db7cbeea15c19fc1bf4a4159b359b7430bff7;hpb=dd74fc4938723fe5ec48d4e5fdcfbe58ac42a48d;p=jalview.git

diff --git a/src/com/stevesoft/pat/lookAhead.java b/src/com/stevesoft/pat/lookAhead.java
index 112db7c..73be36a 100755
--- a/src/com/stevesoft/pat/lookAhead.java
+++ b/src/com/stevesoft/pat/lookAhead.java
@@ -6,41 +6,94 @@
 //    -- Happy Computing!
 //
 package com.stevesoft.pat;
-import java.util.Hashtable;
+
+import java.util.*;
 
 /** Implements "(?=  )" and "(?! )" */
-class lookAhead extends Or {
-    boolean reverse;
-    lookAhead(boolean b) { reverse = b; }
-    public Pattern getNext() { return null; }
-    public int nextMatch(int pos,Pthings pt) {
-        Pattern p = super.getNext();
-        if(p != null) return p.matchInternal(pos,pt);
-        else return pos;
+class lookAhead
+    extends Or
+{
+  boolean reverse;
+  lookAhead(boolean b)
+  {
+    reverse = b;
+  }
+
+  public Pattern getNext()
+  {
+    return null;
+  }
+
+  public int nextMatch(int pos, Pthings pt)
+  {
+    Pattern p = super.getNext();
+    if (p != null)
+    {
+      return p.matchInternal(pos, pt);
     }
-    public int matchInternal(int pos,Pthings pt) {
-        if(super.matchInternal(pos,pt) >= 0) {
-            if(reverse) return -1;
-            else return nextMatch(pos,pt);
-        } else {
-            if(reverse) return nextMatch(pos,pt);
-            else return -1;
-        }
+    else
+    {
+      return pos;
     }
-    String leftForm() {
-        if(reverse)
-            return "(?!";
-        else
-            return "(?=";
+  }
+
+  public int matchInternal(int pos, Pthings pt)
+  {
+    if (super.matchInternal(pos, pt) >= 0)
+    {
+      if (reverse)
+      {
+        return -1;
+      }
+      else
+      {
+        return nextMatch(pos, pt);
+      }
+    }
+    else
+    {
+      if (reverse)
+      {
+        return nextMatch(pos, pt);
+      }
+      else
+      {
+        return -1;
+      }
     }
-    public patInt minChars() { return new patInt(0); }
-    public patInt maxChars() { return new patInt(0); }
-    Pattern clone1(Hashtable h) {
-        lookAhead la=new lookAhead(reverse);
-        h.put(this,la);
-        h.put(la,la);
-        for(int i=0;i<v.size();i++)
-            la.v.addElement( ((Pattern)v.elementAt(i)).clone(h) );
-        return la;
+  }
+
+  String leftForm()
+  {
+    if (reverse)
+    {
+      return "(?!";
+    }
+    else
+    {
+      return "(?=";
+    }
+  }
+
+  public patInt minChars()
+  {
+    return new patInt(0);
+  }
+
+  public patInt maxChars()
+  {
+    return new patInt(0);
+  }
+
+  Pattern clone1(Hashtable h)
+  {
+    lookAhead la = new lookAhead(reverse);
+    h.put(this, la);
+    h.put(la, la);
+    for (int i = 0; i < v.size(); i++)
+    {
+      la.v.addElement( ( (Pattern) v.elementAt(i)).clone(h));
     }
+    return la;
+  }
 }