--- old/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/IndexNode.java	2020-04-15 18:47:48.000000000 +0530
+++ /dev/null	2020-04-15 18:47:48.000000000 +0530
@@ -1,151 +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.ir;
-
-import jdk.nashorn.internal.codegen.types.Type;
-import jdk.nashorn.internal.ir.annotations.Immutable;
-import jdk.nashorn.internal.ir.visitor.NodeVisitor;
-/**
- * IR representation of an indexed access (brackets operator.)
- */
-@Immutable
-public final class IndexNode extends BaseNode {
-    private static final long serialVersionUID = 1L;
-
-    /** Property index. */
-    private final Expression index;
-
-    /**
-     * Constructors
-     *
-     * @param token   token
-     * @param finish  finish
-     * @param base    base node for access
-     * @param index   index for access
-     */
-    public IndexNode(final long token, final int finish, final Expression base, final Expression index) {
-        super(token, finish, base, false, false);
-        this.index = index;
-    }
-
-    private IndexNode(final IndexNode indexNode, final Expression base, final Expression index, final boolean isFunction,
-                      final Type type, final int programPoint, final boolean isSuper) {
-        super(indexNode, base, isFunction, type, programPoint, isSuper);
-        this.index = index;
-    }
-
-    @Override
-    public Node accept(final NodeVisitor<? extends LexicalContext> visitor) {
-        if (visitor.enterIndexNode(this)) {
-            return visitor.leaveIndexNode(
-                setBase((Expression)base.accept(visitor)).
-                setIndex((Expression)index.accept(visitor)));
-        }
-        return this;
-    }
-
-    @Override
-    public void toString(final StringBuilder sb, final boolean printType) {
-        final boolean needsParen = tokenType().needsParens(base.tokenType(), true);
-
-        if (needsParen) {
-            sb.append('(');
-        }
-
-        if (printType) {
-            optimisticTypeToString(sb);
-        }
-
-        base.toString(sb, printType);
-
-        if (needsParen) {
-            sb.append(')');
-        }
-
-        sb.append('[');
-        index.toString(sb, printType);
-        sb.append(']');
-    }
-
-    /**
-     * Get the index expression for this IndexNode
-     * @return the index
-     */
-    public Expression getIndex() {
-        return index;
-    }
-
-    private IndexNode setBase(final Expression base) {
-        if (this.base == base) {
-            return this;
-        }
-        return new IndexNode(this, base, index, isFunction(), type, programPoint, isSuper());
-    }
-
-    /**
-     * Set the index expression for this node
-     * @param index new index expression
-     * @return a node equivalent to this one except for the requested change.
-     */
-    public IndexNode setIndex(final Expression index) {
-        if(this.index == index) {
-            return this;
-        }
-        return new IndexNode(this, base, index, isFunction(), type, programPoint, isSuper());
-    }
-
-    @Override
-    public IndexNode setType(final Type type) {
-        if (this.type == type) {
-            return this;
-        }
-        return new IndexNode(this, base, index, isFunction(), type, programPoint, isSuper());
-    }
-
-    @Override
-    public IndexNode setIsFunction() {
-        if (isFunction()) {
-            return this;
-        }
-        return new IndexNode(this, base, index, true, type, programPoint, isSuper());
-    }
-
-    @Override
-    public IndexNode setProgramPoint(final int programPoint) {
-        if (this.programPoint == programPoint) {
-            return this;
-        }
-        return new IndexNode(this, base, index, isFunction(), type, programPoint, isSuper());
-    }
-
-    @Override
-    public IndexNode setIsSuper() {
-        if (isSuper()) {
-            return this;
-        }
-        return new IndexNode(this, base, index, isFunction(), type, programPoint, true);
-    }
-}