1 files changed, 100 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/java/util/regex/RETokenBackRef.java b/gcc-4.4.3/libjava/classpath/gnu/java/util/regex/RETokenBackRef.java
new file mode 100644
index 000000000..8f146222d
--- /dev/null
+++ b/gcc-4.4.3/libjava/classpath/gnu/java/util/regex/RETokenBackRef.java
@@ -0,0 +1,100 @@
+/* gnu/regexp/RETokenBackRef.java
+   Copyright (C) 2006 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.java.util.regex;
+
+import gnu.java.lang.CPStringBuilder;
+
+final class RETokenBackRef extends REToken
+{
+  private int num;
+  private boolean insens;
+
+    RETokenBackRef (int subIndex, int num, boolean insens)
+  {
+    super (subIndex);
+    this.num = num;
+    this.insens = insens;
+  }
+
+  // should implement getMinimumLength() -- any ideas?
+
+  REMatch matchThis (CharIndexed input, REMatch mymatch)
+  {
+    if (num >= mymatch.start.length)
+      return null;
+    if (num >= mymatch.end.length)
+      return null;
+    int b, e;
+    b = mymatch.start[num];
+    e = mymatch.end[num];
+    if ((b == -1) || (e == -1))
+      return null;		// this shouldn't happen, but...
+    if (b < 0)
+      b += 1;
+    if (e < 0)
+      e += 1;
+    for (int i = b; i < e; i++)
+      {
+	char c1 = input.charAt (mymatch.index + i - b);
+	char c2 = input.charAt (i);
+	if (c1 != c2)
+	  {
+	    if (insens)
+	      {
+		if (c1 != toLowerCase (c2, unicodeAware) &&
+		    c1 != toUpperCase (c2, unicodeAware))
+		  {
+		    return null;
+		  }
+	      }
+	    else
+	      {
+		return null;
+	      }
+	  }
+      }
+    mymatch.index += e - b;
+    return mymatch;
+  }
+
+  void dump (CPStringBuilder os)
+  {
+    os.append ('\\').append (num);
+  }
+}