Mercurial > jdk8-mips64-public > nashorn / annotate
src/jdk/nashorn/internal/ir/ThrowNode.java@e478708faa22 (annotated)
src/jdk/nashorn/internal/ir/ThrowNode.java
Fri, 15 Feb 2013 09:44:15 +0100
- author
- lagergren
- date
- Fri, 15 Feb 2013 09:44:15 +0100
- changeset 96
- e478708faa22
- parent 16
- 69a4f0363d0f
- child 144
- 4be452026847
- permissions
- -rw-r--r--
8008239: Unpublicized parts of the code generator package that were only package internal.
Reviewed-by: hannesw, attila
| jlaskey@3 | 1 | /* |
| jlaskey@7 | 2 | * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
| jlaskey@3 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| jlaskey@3 | 4 | * |
| jlaskey@3 | 5 | * This code is free software; you can redistribute it and/or modify it |
| jlaskey@3 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| jlaskey@3 | 7 | * published by the Free Software Foundation. Oracle designates this |
| jlaskey@3 | 8 | * particular file as subject to the "Classpath" exception as provided |
| jlaskey@3 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
| jlaskey@3 | 10 | * |
| jlaskey@3 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| jlaskey@3 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| jlaskey@3 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| jlaskey@3 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| jlaskey@3 | 15 | * accompanied this code). |
| jlaskey@3 | 16 | * |
| jlaskey@3 | 17 | * You should have received a copy of the GNU General Public License version |
| jlaskey@3 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| jlaskey@3 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| jlaskey@3 | 20 | * |
| jlaskey@3 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| jlaskey@3 | 22 | * or visit www.oracle.com if you need additional information or have any |
| jlaskey@3 | 23 | * questions. |
| jlaskey@3 | 24 | */ |
| jlaskey@3 | 25 | |
| jlaskey@3 | 26 | package jdk.nashorn.internal.ir; |
| jlaskey@3 | 27 | |
| jlaskey@3 | 28 | import jdk.nashorn.internal.ir.annotations.Ignore; |
| jlaskey@3 | 29 | import jdk.nashorn.internal.ir.visitor.NodeVisitor; |
| jlaskey@3 | 30 | import jdk.nashorn.internal.runtime.Source; |
| jlaskey@3 | 31 | |
| jlaskey@3 | 32 | /** |
| jlaskey@3 | 33 | * IR representation for THROW statements. |
| jlaskey@3 | 34 | */ |
| jlaskey@3 | 35 | public class ThrowNode extends Node { |
| jlaskey@3 | 36 | /** Exception expression. */ |
| jlaskey@3 | 37 | private Node expression; |
| jlaskey@3 | 38 | |
| jlaskey@3 | 39 | /** Try chain. */ |
| lagergren@16 | 40 | @Ignore |
| jlaskey@3 | 41 | private final TryNode tryChain; |
| jlaskey@3 | 42 | |
| jlaskey@3 | 43 | /** |
| jlaskey@3 | 44 | * Constructor |
| jlaskey@3 | 45 | * |
| jlaskey@3 | 46 | * @param source the source |
| jlaskey@3 | 47 | * @param token token |
| jlaskey@3 | 48 | * @param finish finish |
| jlaskey@3 | 49 | * @param expression expression to throw |
| jlaskey@3 | 50 | * @param tryChain surrounding try chain |
| jlaskey@3 | 51 | */ |
| jlaskey@3 | 52 | public ThrowNode(final Source source, final long token, final int finish, final Node expression, final TryNode tryChain) { |
| jlaskey@3 | 53 | super(source, token, finish); |
| jlaskey@3 | 54 | |
| jlaskey@3 | 55 | this.expression = expression; |
| jlaskey@3 | 56 | this.tryChain = tryChain; |
| jlaskey@3 | 57 | setIsTerminal(true); |
| jlaskey@3 | 58 | } |
| jlaskey@3 | 59 | |
| jlaskey@3 | 60 | private ThrowNode(final ThrowNode throwNode, final CopyState cs) { |
| jlaskey@3 | 61 | super(throwNode); |
| jlaskey@3 | 62 | |
| lagergren@96 | 63 | this.expression = cs.existingOrCopy(throwNode.expression); |
| lagergren@96 | 64 | this.tryChain = (TryNode)cs.existingOrSame(throwNode.tryChain); |
| jlaskey@3 | 65 | } |
| jlaskey@3 | 66 | |
| jlaskey@3 | 67 | @Override |
| jlaskey@3 | 68 | protected Node copy(final CopyState cs) { |
| jlaskey@3 | 69 | return new ThrowNode(this, cs); |
| jlaskey@3 | 70 | } |
| jlaskey@3 | 71 | |
| jlaskey@3 | 72 | /** |
| jlaskey@3 | 73 | * Assist in IR navigation. |
| jlaskey@3 | 74 | * @param visitor IR navigating visitor. |
| jlaskey@3 | 75 | */ |
| jlaskey@3 | 76 | @Override |
| jlaskey@3 | 77 | public Node accept(final NodeVisitor visitor) { |
| jlaskey@3 | 78 | if (visitor.enter(this) != null) { |
| jlaskey@3 | 79 | setExpression(expression.accept(visitor)); |
| jlaskey@3 | 80 | return visitor.leave(this); |
| jlaskey@3 | 81 | } |
| jlaskey@3 | 82 | |
| jlaskey@3 | 83 | return this; |
| jlaskey@3 | 84 | } |
| jlaskey@3 | 85 | |
| jlaskey@3 | 86 | @Override |
| jlaskey@3 | 87 | public void toString(final StringBuilder sb) { |
| jlaskey@3 | 88 | sb.append("throw "); |
| jlaskey@3 | 89 | |
| jlaskey@3 | 90 | if (expression != null) { |
| jlaskey@3 | 91 | expression.toString(sb); |
| jlaskey@3 | 92 | } |
| jlaskey@3 | 93 | } |
| jlaskey@3 | 94 | |
| jlaskey@3 | 95 | /** |
| jlaskey@3 | 96 | * Get the expression that is being thrown by this node |
| jlaskey@3 | 97 | * @return expression |
| jlaskey@3 | 98 | */ |
| jlaskey@3 | 99 | public Node getExpression() { |
| jlaskey@3 | 100 | return expression; |
| jlaskey@3 | 101 | } |
| jlaskey@3 | 102 | |
| jlaskey@3 | 103 | /** |
| jlaskey@3 | 104 | * Reset the expression being thrown by this node |
| jlaskey@3 | 105 | * @param expression new expression |
| jlaskey@3 | 106 | */ |
| jlaskey@3 | 107 | public void setExpression(final Node expression) { |
| jlaskey@3 | 108 | this.expression = expression; |
| jlaskey@3 | 109 | } |
| jlaskey@3 | 110 | |
| jlaskey@3 | 111 | /** |
| jlaskey@3 | 112 | * Get surrounding tryChain for this node |
| jlaskey@3 | 113 | * @return try chain |
| jlaskey@3 | 114 | */ |
| jlaskey@3 | 115 | public TryNode getTryChain() { |
| jlaskey@3 | 116 | return tryChain; |
| jlaskey@3 | 117 | } |
| jlaskey@3 | 118 | } |
