--- old/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/ConstantData.java	2020-04-15 18:47:05.000000000 +0530
+++ /dev/null	2020-04-15 18:47:05.000000000 +0530
@@ -1,207 +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.codegen;
-
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
-
-import jdk.nashorn.internal.runtime.PropertyMap;
-
-/**
- * Manages constants needed by code generation.  Objects are maintained in an
- * interning maps to remove duplicates.
- */
-final class ConstantData {
-    /** Constant table. */
-    final List<Object> constants;
-
-    /** Constant table string interning map. */
-    final Map<String, Integer> stringMap;
-
-    /** Constant table object interning map. */
-    final Map<Object, Integer> objectMap;
-
-    private static class ArrayWrapper {
-        private final Object array;
-        private final int    hashCode;
-
-        public ArrayWrapper(final Object array) {
-            this.array    = array;
-            this.hashCode = calcHashCode();
-        }
-
-        /**
-         * Calculate a shallow hashcode for the array.
-         * @return Hashcode with elements factored in.
-         */
-        private int calcHashCode() {
-            final Class<?> cls = array.getClass();
-
-            if (!cls.getComponentType().isPrimitive()) {
-                return Arrays.hashCode((Object[])array);
-            } else if (cls == double[].class) {
-                return Arrays.hashCode((double[])array);
-            } if (cls == long[].class) {
-                return Arrays.hashCode((long[])array);
-            } if (cls == int[].class) {
-                return Arrays.hashCode((int[])array);
-            }
-
-            throw new AssertionError("ConstantData doesn't support " + cls);
-        }
-
-        @Override
-        public boolean equals(final Object other) {
-            if (!(other instanceof ArrayWrapper)) {
-                return false;
-            }
-
-            final Object otherArray = ((ArrayWrapper)other).array;
-
-            if (array == otherArray) {
-                return true;
-            }
-
-            final Class<?> cls = array.getClass();
-
-            if (cls == otherArray.getClass()) {
-                if (!cls.getComponentType().isPrimitive()) {
-                    return Arrays.equals((Object[])array, (Object[])otherArray);
-                } else if (cls == double[].class) {
-                    return Arrays.equals((double[])array, (double[])otherArray);
-                } else if (cls == long[].class) {
-                    return Arrays.equals((long[])array, (long[])otherArray);
-                } else if (cls == int[].class) {
-                    return Arrays.equals((int[])array, (int[])otherArray);
-                }
-            }
-
-            return false;
-        }
-
-        @Override
-        public int hashCode() {
-            return hashCode;
-        }
-    }
-
-    /**
-     * {@link PropertyMap} wrapper class that provides implementations for the {@code hashCode} and {@code equals}
-     * methods that are based on the map layout. {@code PropertyMap} itself inherits the identity based implementations
-     * from {@code java.lang.Object}.
-     */
-    private static class PropertyMapWrapper {
-        private final PropertyMap propertyMap;
-        private final int hashCode;
-
-        public PropertyMapWrapper(final PropertyMap map) {
-            this.hashCode = Arrays.hashCode(map.getProperties()) + 31 * Objects.hashCode(map.getClassName());
-            this.propertyMap = map;
-        }
-
-        @Override
-        public int hashCode() {
-            return hashCode;
-        }
-
-        @Override
-        public boolean equals(final Object other) {
-            if (!(other instanceof PropertyMapWrapper)) {
-                return false;
-            }
-            final PropertyMap otherMap = ((PropertyMapWrapper) other).propertyMap;
-            return propertyMap == otherMap
-                    || (Arrays.equals(propertyMap.getProperties(), otherMap.getProperties())
-                        && Objects.equals(propertyMap.getClassName(), otherMap.getClassName()));
-        }
-    }
-
-    /**
-     * Constructor
-     */
-    ConstantData() {
-        this.constants = new ArrayList<>();
-        this.stringMap = new HashMap<>();
-        this.objectMap = new HashMap<>();
-    }
-
-    /**
-     * Add a string to the constant data
-     *
-     * @param string the string to add
-     * @return the index in the constant pool that the string was given
-     */
-    public int add(final String string) {
-        final Integer value = stringMap.get(string);
-
-        if (value != null) {
-            return value;
-        }
-
-        constants.add(string);
-        final int index = constants.size() - 1;
-        stringMap.put(string, index);
-
-        return index;
-    }
-
-    /**
-     * Add an object to the constant data
-     *
-     * @param object the string to add
-     * @return the index in the constant pool that the object was given
-     */
-    public int add(final Object object) {
-        assert object != null;
-        final Object  entry;
-        if (object.getClass().isArray()) {
-            entry = new ArrayWrapper(object);
-        } else if (object instanceof PropertyMap) {
-            entry = new PropertyMapWrapper((PropertyMap) object);
-        } else {
-            entry = object;
-        }
-        final Integer value = objectMap.get(entry);
-
-        if (value != null) {
-            return value;
-        }
-
-        constants.add(object);
-        final int index = constants.size() - 1;
-        objectMap.put(entry, index);
-
-        return index;
-    }
-
-    Object[] toArray() {
-        return constants.toArray();
-    }
-}