--- a/nashorn/src/jdk/nashorn/internal/runtime/regexp/DefaultRegExp.java	Tue Jun 04 14:17:50 2013 -0700
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,163 +0,0 @@
-/*
- * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.  Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code 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
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package jdk.nashorn.internal.runtime.regexp;
-
-import jdk.nashorn.internal.runtime.ParserException;
-
-import static java.util.regex.Pattern.CASE_INSENSITIVE;
-import static java.util.regex.Pattern.MULTILINE;
-import static java.util.regex.Pattern.UNICODE_CASE;
-
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-import java.util.regex.PatternSyntaxException;
-
-/**
- * Default regular expression implementation based on java.util.regex package.
- *
- * Note that this class is not thread-safe as it stores the current match result
- * and the string being matched in instance fields.
- */
-public class DefaultRegExp extends RegExp {
-
-    /** Java regexp pattern to use for match. We compile to one of these */
-    private Pattern pattern;
-
-    /** The matcher */
-    private RegExpMatcher matcher;
-
-    /**
-     * Construct a Regular expression from the given {@code source} and {@code flags} strings.
-     *
-     * @param source RegExp source string
-     * @param flags RegExp flag string
-     * @throws ParserException if flags is invalid or source string has syntax error.
-     */
-    public DefaultRegExp(final String source, final String flags) throws ParserException {
-        super(source, flags);
-
-        int intFlags = 0;
-
-        if (isIgnoreCase()) {
-            intFlags |= CASE_INSENSITIVE | UNICODE_CASE;
-        }
-        if (isMultiline()) {
-            intFlags |= MULTILINE;
-        }
-
-        try {
-            RegExpScanner parsed;
-
-            try {
-                parsed = RegExpScanner.scan(source);
-            } catch (final PatternSyntaxException e) {
-                // refine the exception with a better syntax error, if this
-                // passes, just rethrow what we have
-                Pattern.compile(source, intFlags);
-                throw e;
-            }
-
-            if (parsed != null) {
-                this.pattern = Pattern.compile(parsed.getJavaPattern(), intFlags);
-                this.groupsInNegativeLookahead = parsed.getGroupsInNegativeLookahead();
-            }
-        } catch (final PatternSyntaxException e2) {
-            throwParserException("syntax", e2.getMessage());
-        }
-    }
-
-    @Override
-    public RegExpMatcher match(final String str) {
-        if (pattern == null) {
-            return null; // never matches or similar, e.g. a[]
-        }
-
-        RegExpMatcher currentMatcher = this.matcher;
-
-        if (currentMatcher == null || matcher.getInput() != str) {
-            currentMatcher = new DefaultMatcher(str);
-            this.matcher  = currentMatcher;
-        }
-
-        return currentMatcher;
-    }
-
-    class DefaultMatcher implements RegExpMatcher {
-        final String input;
-        final Matcher defaultMatcher;
-
-        DefaultMatcher(final String input) {
-            this.input = input;
-            this.defaultMatcher = pattern.matcher(input);
-        }
-
-        @Override
-        public boolean search(final int start) {
-            return defaultMatcher.find(start);
-        }
-
-        @Override
-        public String getInput() {
-            return input;
-        }
-
-        @Override
-        public int start() {
-            return defaultMatcher.start();
-        }
-
-        @Override
-        public int start(final int group) {
-            return defaultMatcher.start(group);
-        }
-
-        @Override
-        public int end() {
-            return defaultMatcher.end();
-        }
-
-        @Override
-        public int end(final int group) {
-            return defaultMatcher.end(group);
-        }
-
-        @Override
-        public String group() {
-            return defaultMatcher.group();
-        }
-
-        @Override
-        public String group(final int group) {
-            return defaultMatcher.group(group);
-        }
-
-        @Override
-        public int groupCount() {
-            return defaultMatcher.groupCount();
-        }
-    }
-
-}