/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Rhino code, released
* May 6, 1999.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1997-1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Steve Yegge
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License Version 2 or later (the "GPL"), in which
* case the provisions of the GPL are applicable instead of those above. If
* you wish to allow use of your version of this file only under the terms of
* the GPL and not to allow others to use your version of this file under the
* MPL, indicate your decision by deleting the provisions above and replacing
* them with the notice and other provisions required by the GPL. If you do
* not delete the provisions above, a recipient may use your version of this
* file under either the MPL or the GPL.
*
* ***** END LICENSE BLOCK ***** */
package org.mozilla.javascript.ast;
import org.mozilla.javascript.Token;
/**
* Node representing a catch-clause of a try-statement.
* Node type is {@link Token#CATCH}.
*
* <pre><i>CatchClause</i> :
* <b>catch</b> ( <i><b>Identifier</b></i> [<b>if</b> Expression] ) Block</pre>
*/
public class CatchClause extends AstNode {
private Name varName;
private AstNode catchCondition;
private Block body;
private int ifPosition = -1;
private int lp = -1;
private int rp = -1;
{
type = Token.CATCH;
}
public CatchClause() {
}
public CatchClause(int pos) {
super(pos);
}
public CatchClause(int pos, int len) {
super(pos, len);
}
/**
* Returns catch variable node
* @return catch variable
*/
public Name getVarName() {
return varName;
}
/**
* Sets catch variable node, and sets its parent to this node.
* @param varName catch variable
* @throws IllegalArgumentException if varName is {@code null}
*/
public void setVarName(Name varName) {
assertNotNull(varName);
this.varName = varName;
varName.setParent(this);
}
/**
* Returns catch condition node, if present
* @return catch condition node, {@code null} if not present
*/
public AstNode getCatchCondition() {
return catchCondition;
}
/**
* Sets catch condition node, and sets its parent to this node.
* @param catchCondition catch condition node. Can be {@code null}.
*/
public void setCatchCondition(AstNode catchCondition) {
this.catchCondition = catchCondition;
if (catchCondition != null)
catchCondition.setParent(this);
}
/**
* Returns catch body
*/
public Block getBody() {
return body;
}
/**
* Sets catch body, and sets its parent to this node.
* @throws IllegalArgumentException if body is {@code null}
*/
public void setBody(Block body) {
assertNotNull(body);
this.body = body;
body.setParent(this);
}
/**
* Returns left paren position
*/
public int getLp() {
return lp;
}
/**
* Sets left paren position
*/
public void setLp(int lp) {
this.lp = lp;
}
/**
* Returns right paren position
*/
public int getRp() {
return rp;
}
/**
* Sets right paren position
*/
public void setRp(int rp) {
this.rp = rp;
}
/**
* Sets both paren positions
*/
public void setParens(int lp, int rp) {
this.lp = lp;
this.rp = rp;
}
/**
* Returns position of "if" keyword
* @return position of "if" keyword, if present, or -1
*/
public int getIfPosition() {
return ifPosition;
}
/**
* Sets position of "if" keyword
* @param ifPosition position of "if" keyword, if present, or -1
*/
public void setIfPosition(int ifPosition) {
this.ifPosition = ifPosition;
}
@Override
public String toSource(int depth) {
StringBuilder sb = new StringBuilder();
sb.append(makeIndent(depth));
sb.append("catch (");
sb.append(varName.toSource(0));
if (catchCondition != null) {
sb.append(" if ");
sb.append(catchCondition.toSource(0));
}
sb.append(") ");
sb.append(body.toSource(0));
return sb.toString();
}
/**
* Visits this node, the catch var name node, the condition if
* non-{@code null}, and the catch body.
*/
@Override
public void visit(NodeVisitor v) {
if (v.visit(this)) {
varName.visit(v);
if (catchCondition != null) {
catchCondition.visit(v);
}
body.visit(v);
}
}
}