1 files changed, 98 insertions, 0 deletions
diff --git a/gnu/java/util/regex/RETokenStart.java b/gnu/java/util/regex/RETokenStart.java
new file mode 100644
index 000000000..56bc36129
--- /dev/null
+++ b/gnu/java/util/regex/RETokenStart.java
@@ -0,0 +1,98 @@
+/*  gnu/regexp/RETokenStart.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;
+
+class RETokenStart extends REToken {
+    private String newline; // matches after a newline
+    
+    RETokenStart(int subIndex, String newline) {
+	super(subIndex);
+	this.newline = newline;
+    }
+
+    int getMaximumLength() {
+        return 0;
+    }
+    
+    REMatch matchThis(CharIndexed input, REMatch mymatch) {
+	// charAt(index-n) may be unknown on a Reader/InputStream. FIXME
+	// Match after a newline if in multiline mode
+	
+	if (newline != null) {
+	    int len = newline.length();
+	    if (mymatch.offset >= len) {
+		boolean found = true;
+		char z;
+		int i = 0; // position in REToken.newline
+		char ch = input.charAt(mymatch.index - len);
+		do {
+		    z = newline.charAt(i);
+		    if (ch != z) {
+			found = false;
+			break;
+		    }
+		    ++i;
+		    ch = input.charAt(mymatch.index - len + i);
+		} while (i < len);
+	    
+		if (found) return mymatch;
+	    }
+	}
+	
+	// Don't match at all if REG_NOTBOL is set.
+	if ((mymatch.eflags & RE.REG_NOTBOL) > 0) return null;
+	
+	if ((mymatch.eflags & RE.REG_ANCHORINDEX) > 0)
+	    return (mymatch.anchor == mymatch.offset) ? 
+		mymatch : null;
+	else
+	    return ((mymatch.index == 0) && (mymatch.offset == 0)) ?
+		mymatch : null;
+    }
+
+    boolean returnsFixedLengthmatches() { return true; }
+
+    int findFixedLengthMatches(CharIndexed input, REMatch mymatch, int max) {
+        if (matchThis(input, mymatch) != null) return max;
+	else return 0;
+    }
+    
+    void dump(StringBuffer os) {
+	os.append('^');
+    }
+}