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/*
* 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 {@code with} statements.
*/
@Immutable
public final class WithNode extends LexicalContextStatement {
/** This expression. */
private final Expression expression;
/** Statements. */
private final Block body;
/**
* Constructor
*
* @param lineNumber line number
* @param token token
* @param finish finish
*/
public WithNode(final int lineNumber, final long token, final int finish) {
super(lineNumber, token, finish);
this.expression = null;
this.body = null;
}
private WithNode(final WithNode node, final Expression expression, final Block body) {
super(node);
this.expression = expression;
this.body = body;
}
/**
* Assist in IR navigation.
*
* @param visitor IR navigating visitor.
*/
@Override
public Node accept(final LexicalContext lc, final NodeVisitor<? extends LexicalContext> visitor) {
if (visitor.enterWithNode(this)) {
return visitor.leaveWithNode(
setExpression(lc, (Expression)expression.accept(visitor)).
setBody(lc, (Block)body.accept(visitor)));
}
return this;
}
@Override
public boolean isTerminal() {
return body.isTerminal();
}
@Override
public void toString(final StringBuilder sb) {
sb.append("with (");
expression.toString(sb);
sb.append(')');
}
/**
* Get the body of this WithNode
* @return the body
*/
public Block getBody() {
return body;
}
/**
* Reset the body of this with node
* @param lc lexical context
* @param body new body
* @return new or same withnode
*/
public WithNode setBody(final LexicalContext lc, final Block body) {
if (this.body == body) {
return this;
}
return Node.replaceInLexicalContext(lc, this, new WithNode(this, expression, body));
}
/**
* Get the expression of this WithNode
* @return the expression
*/
public Expression getExpression() {
return expression;
}
/**
* Reset the expression of this with node
* @param lc lexical context
* @param expression new expression
* @return new or same withnode
*/
public WithNode setExpression(final LexicalContext lc, final Expression expression) {
if (this.expression == expression) {
return this;
}
return Node.replaceInLexicalContext(lc, this, new WithNode(this, expression, body));
}
}
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