1/* 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26package jdk.nashorn.internal.ir; 27 28import java.util.Objects; 29import jdk.nashorn.internal.codegen.Label; 30import jdk.nashorn.internal.ir.annotations.Immutable; 31import jdk.nashorn.internal.ir.visitor.NodeVisitor; 32 33/** 34 * IR representation for synthetic jump into an inlined finally statement. 35 */ 36@Immutable 37public final class JumpToInlinedFinally extends JumpStatement { 38 private static final long serialVersionUID = 1L; 39 40 /** 41 * Constructor 42 * 43 * @param labelName label name for inlined finally block 44 */ 45 public JumpToInlinedFinally(final String labelName) { 46 super(NO_LINE_NUMBER, NO_TOKEN, NO_FINISH, Objects.requireNonNull(labelName)); 47 } 48 49 private JumpToInlinedFinally(final JumpToInlinedFinally breakNode, final LocalVariableConversion conversion) { 50 super(breakNode, conversion); 51 } 52 53 @Override 54 public Node accept(final NodeVisitor<? extends LexicalContext> visitor) { 55 if (visitor.enterJumpToInlinedFinally(this)) { 56 return visitor.leaveJumpToInlinedFinally(this); 57 } 58 59 return this; 60 } 61 62 @Override 63 JumpStatement createNewJumpStatement(final LocalVariableConversion conversion) { 64 return new JumpToInlinedFinally(this, conversion); 65 } 66 67 @Override 68 String getStatementName() { 69 return ":jumpToInlinedFinally"; 70 } 71 72 @Override 73 public Block getTarget(final LexicalContext lc) { 74 return lc.getInlinedFinally(getLabelName()); 75 } 76 77 @Override 78 public TryNode getPopScopeLimit(final LexicalContext lc) { 79 // Returns the try node to which this jump's target belongs. This will make scope popping also pop the scope 80 // for the body of the try block, if it needs scope. 81 return lc.getTryNodeForInlinedFinally(getLabelName()); 82 } 83 84 @Override 85 Label getTargetLabel(final BreakableNode target) { 86 assert target != null; 87 // We're jumping to the entry of the inlined finally block 88 return ((Block)target).getEntryLabel(); 89 } 90} 91