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src/jdk/nashorn/internal/ir/LabelNode.java@d1ce4e09e4ba (annotated)

src/jdk/nashorn/internal/ir/LabelNode.java

Thu, 14 Feb 2013 14:07:53 +0100

author

hannesw

date

Thu, 14 Feb 2013 14:07:53 +0100

changeset 93

d1ce4e09e4ba

parent 16

69a4f0363d0f

child 96

e478708faa22

permissions

-rw-r--r--

8008198: java.lang.AssertionError: Invalid break target class jdk.nashorn.internal.ir.TryNode
Reviewed-by: attila, jlaskey

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
lagergren@16	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 a labeled statement.
jlaskey@3	34	*
jlaskey@3	35	*/
jlaskey@3	36
jlaskey@3	37	public class LabelNode extends Node {
jlaskey@3	38	/** Label ident. */
jlaskey@3	39	private IdentNode label;
jlaskey@3	40
jlaskey@3	41	/** Statements. */
jlaskey@3	42	private Block body;
jlaskey@3	43
jlaskey@3	44	/** Node to break from. */
lagergren@16	45	@Ignore
jlaskey@3	46	private Node breakNode;
jlaskey@3	47
jlaskey@3	48	/** Node to continue. */
lagergren@16	49	@Ignore
jlaskey@3	50	private Node continueNode;
jlaskey@3	51
jlaskey@3	52	/**
jlaskey@3	53	* Constructor
jlaskey@3	54	*
jlaskey@3	55	* @param source the source
jlaskey@3	56	* @param token token
jlaskey@3	57	* @param finish finish
jlaskey@3	58	* @param label label identifier
jlaskey@3	59	* @param body body of label node
jlaskey@3	60	*/
jlaskey@3	61	public LabelNode(final Source source, final long token, final int finish, final IdentNode label, final Block body) {
jlaskey@3	62	super(source, token, finish);
jlaskey@3	63
jlaskey@3	64	this.label = label;
jlaskey@3	65	this.body = body;
jlaskey@3	66	}
jlaskey@3	67
jlaskey@3	68	private LabelNode(final LabelNode labelNode, final CopyState cs) {
jlaskey@3	69	super(labelNode);
jlaskey@3	70
jlaskey@3	71	label = (IdentNode)cs.existingOrCopy(labelNode.label);
jlaskey@3	72	body = (Block)cs.existingOrCopy(labelNode.body);
jlaskey@3	73	breakNode = cs.existingOrSame(labelNode.breakNode);
jlaskey@3	74	continueNode = cs.existingOrSame(labelNode.continueNode);
jlaskey@3	75	}
jlaskey@3	76
jlaskey@3	77	@Override
jlaskey@3	78	protected Node copy(final CopyState cs) {
jlaskey@3	79	return new LabelNode(this, cs);
jlaskey@3	80	}
jlaskey@3	81
jlaskey@3	82	@Override
jlaskey@3	83	public Node accept(final NodeVisitor visitor) {
jlaskey@3	84	if (visitor.enter(this) != null) {
jlaskey@3	85	label = (IdentNode)label.accept(visitor);
jlaskey@3	86	body = (Block)body.accept(visitor);
jlaskey@3	87	return visitor.leave(this);
jlaskey@3	88	}
jlaskey@3	89
jlaskey@3	90	return this;
jlaskey@3	91	}
jlaskey@3	92
jlaskey@3	93	@Override
jlaskey@3	94	public void toString(final StringBuilder sb) {
jlaskey@3	95	label.toString(sb);
jlaskey@3	96	sb.append(':');
jlaskey@3	97	}
jlaskey@3	98
jlaskey@3	99	/**
jlaskey@3	100	* Get the body of the node
jlaskey@3	101	* @return the body
jlaskey@3	102	*/
jlaskey@3	103	public Block getBody() {
jlaskey@3	104	return body;
jlaskey@3	105	}
jlaskey@3	106
jlaskey@3	107	/**
jlaskey@3	108	* Reset the body of the node
jlaskey@3	109	* @param body new body
jlaskey@3	110	*/
jlaskey@3	111	public void setBody(final Block body) {
jlaskey@3	112	this.body = body;
jlaskey@3	113	}
jlaskey@3	114
jlaskey@3	115	/**
jlaskey@3	116	* Get the break node for this node
jlaskey@3	117	* @return the break node
jlaskey@3	118	*/
jlaskey@3	119	public Node getBreakNode() {
jlaskey@3	120	return breakNode;
jlaskey@3	121	}
jlaskey@3	122
jlaskey@3	123	/**
jlaskey@3	124	* Reset the break node for this node
jlaskey@3	125	* @param breakNode the break node
jlaskey@3	126	*/
jlaskey@3	127	public void setBreakNode(final Node breakNode) {
hannesw@93	128	assert breakNode instanceof BreakableNode || breakNode instanceof Block : "Invalid break node: " + breakNode;
jlaskey@3	129	this.breakNode = breakNode;
jlaskey@3	130	}
jlaskey@3	131
jlaskey@3	132	/**
jlaskey@3	133	* Get the continue node for this node
jlaskey@3	134	* @return the continue node
jlaskey@3	135	*/
jlaskey@3	136	public Node getContinueNode() {
jlaskey@3	137	return continueNode;
jlaskey@3	138	}
jlaskey@3	139
jlaskey@3	140	/**
jlaskey@3	141	* Reset the continue node for this node
jlaskey@3	142	* @param continueNode the continue node
jlaskey@3	143	*/
jlaskey@3	144	public void setContinueNode(final Node continueNode) {
hannesw@93	145	assert continueNode instanceof WhileNode : "invalid continue node: " + continueNode;
jlaskey@3	146	this.continueNode = continueNode;
jlaskey@3	147	}
jlaskey@3	148
jlaskey@3	149	/**
jlaskey@3	150	* Get the identifier representing the label name
jlaskey@3	151	* @return the label
jlaskey@3	152	*/
jlaskey@3	153	public IdentNode getLabel() {
jlaskey@3	154	return label;
jlaskey@3	155	}
jlaskey@3	156
jlaskey@3	157	}