--- old/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/ThrowNode.java 2020-04-15 18:48:10.000000000 +0530 +++ /dev/null 2020-04-15 18:48:10.000000000 +0530 @@ -1,142 +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.ir.annotations.Immutable; -import jdk.nashorn.internal.ir.visitor.NodeVisitor; - -/** - * IR representation for THROW statements. - */ -@Immutable -public final class ThrowNode extends Statement implements JoinPredecessor { - private static final long serialVersionUID = 1L; - - /** Exception expression. */ - private final Expression expression; - - private final LocalVariableConversion conversion; - - private final boolean isSyntheticRethrow; - - /** - * Constructor - * - * @param lineNumber line number - * @param token token - * @param finish finish - * @param expression expression to throw - * @param isSyntheticRethrow true if this throw node is part of a synthetic rethrow. - */ - public ThrowNode(final int lineNumber, final long token, final int finish, final Expression expression, final boolean isSyntheticRethrow) { - super(lineNumber, token, finish); - this.expression = expression; - this.isSyntheticRethrow = isSyntheticRethrow; - this.conversion = null; - } - - private ThrowNode(final ThrowNode node, final Expression expression, final boolean isSyntheticRethrow, - final LocalVariableConversion conversion) { - super(node); - this.expression = expression; - this.isSyntheticRethrow = isSyntheticRethrow; - this.conversion = conversion; - } - - @Override - public boolean isTerminal() { - return true; - } - - /** - * Assist in IR navigation. - * @param visitor IR navigating visitor. - */ - @Override - public Node accept(final NodeVisitor visitor) { - if (visitor.enterThrowNode(this)) { - return visitor.leaveThrowNode(setExpression((Expression)expression.accept(visitor))); - } - - return this; - } - - @Override - public void toString(final StringBuilder sb, final boolean printType) { - sb.append("throw "); - - if (expression != null) { - expression.toString(sb, printType); - } - if (conversion != null) { - conversion.toString(sb); - } - } - - /** - * Get the expression that is being thrown by this node - * @return expression - */ - public Expression getExpression() { - return expression; - } - - /** - * Reset the expression being thrown by this node - * @param expression new expression - * @return new or same thrownode - */ - public ThrowNode setExpression(final Expression expression) { - if (this.expression == expression) { - return this; - } - return new ThrowNode(this, expression, isSyntheticRethrow, conversion); - } - - /** - * Is this a throw a synthetic rethrow in a synthetic catch-all block - * created when inlining finally statements? In that case we never - * wrap whatever is thrown into an ECMAException, just rethrow it. - * @return true if synthetic throw node - */ - public boolean isSyntheticRethrow() { - return isSyntheticRethrow; - } - - @Override - public JoinPredecessor setLocalVariableConversion(final LexicalContext lc, final LocalVariableConversion conversion) { - if(this.conversion == conversion) { - return this; - } - return new ThrowNode(this, expression, isSyntheticRethrow, conversion); - } - - @Override - public LocalVariableConversion getLocalVariableConversion() { - return conversion; - } - -}