--- old/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/BaseNode.java	2020-04-15 18:47:30.000000000 +0530
+++ /dev/null	2020-04-15 18:47:30.000000000 +0530
@@ -1,159 +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 static jdk.nashorn.internal.runtime.UnwarrantedOptimismException.INVALID_PROGRAM_POINT;
-
-import jdk.nashorn.internal.codegen.types.Type;
-import jdk.nashorn.internal.ir.annotations.Immutable;
-import jdk.nashorn.internal.parser.TokenType;
-
-/**
- * IR base for accessing/indexing nodes.
- *
- * @see AccessNode
- * @see IndexNode
- */
-@Immutable
-public abstract class BaseNode extends Expression implements FunctionCall, Optimistic {
-    private static final long serialVersionUID = 1L;
-
-    /** Base Node. */
-    protected final Expression base;
-
-    private final boolean isFunction;
-
-    /** Callsite type for this node, if overridden optimistically or conservatively depending on coercion */
-    protected final Type type;
-
-    /** Program point id */
-    protected final int programPoint;
-
-    /** Super property access. */
-    private final boolean isSuper;
-
-    /**
-     * Constructor
-     *
-     * @param token  token
-     * @param finish finish
-     * @param base   base node
-     * @param isFunction is this a function
-     * @param isSuper is this a super property access
-     */
-    public BaseNode(final long token, final int finish, final Expression base, final boolean isFunction, final boolean isSuper) {
-        super(token, base.getStart(), finish);
-        this.base           = base;
-        this.isFunction     = isFunction;
-        this.type = null;
-        this.programPoint   = INVALID_PROGRAM_POINT;
-        this.isSuper        = isSuper;
-    }
-
-    /**
-     * Copy constructor for immutable nodes
-     * @param baseNode node to inherit from
-     * @param base base
-     * @param isFunction is this a function
-     * @param callSiteType  the callsite type for this base node, either optimistic or conservative
-     * @param programPoint  program point id
-     * @param isSuper is this a super property access
-     */
-    protected BaseNode(final BaseNode baseNode, final Expression base, final boolean isFunction, final Type callSiteType, final int programPoint, final boolean isSuper) {
-        super(baseNode);
-        this.base           = base;
-        this.isFunction     = isFunction;
-        this.type = callSiteType;
-        this.programPoint   = programPoint;
-        this.isSuper        = isSuper;
-    }
-
-    /**
-     * Get the base node for this access
-     * @return the base node
-     */
-    public Expression getBase() {
-        return base;
-    }
-
-    @Override
-    public boolean isFunction() {
-        return isFunction;
-    }
-
-    @Override
-    public Type getType() {
-        return type == null ? getMostPessimisticType() : type;
-    }
-
-    @Override
-    public int getProgramPoint() {
-        return programPoint;
-    }
-
-    @Override
-    public Type getMostOptimisticType() {
-        return Type.INT;
-    }
-
-    @Override
-    public Type getMostPessimisticType() {
-        return Type.OBJECT;
-    }
-
-    @Override
-    public boolean canBeOptimistic() {
-        return true;
-    }
-
-    /**
-     * Return true if this node represents an index operation normally represented as {@link IndexNode}.
-     * @return true if an index access.
-     */
-    public boolean isIndex() {
-        return isTokenType(TokenType.LBRACKET);
-    }
-
-    /**
-     * Mark this node as being the callee operand of a {@link CallNode}.
-     * @return a base node identical to this one in all aspects except with its function flag set.
-     */
-    public abstract BaseNode setIsFunction();
-
-    /**
-     * @return {@code true} if a SuperProperty access.
-     */
-    public boolean isSuper() {
-        return isSuper;
-    }
-
-    /**
-     * Mark this node as being a SuperProperty access.
-     *
-     * @return  a base node identical to this one in all aspects except with its super flag set.
-     */
-    public abstract BaseNode setIsSuper();
-}