org.mozilla.javascript.ast.ArrayComprehensionLoop Maven / Gradle / Ivy
/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.javascript.ast;
import org.mozilla.javascript.Token;
/**
* AST node for a single 'for (foo in bar)' loop construct in a JavaScript 1.7
* Array comprehension. This node type is almost equivalent to a
* {@link ForInLoop}, except that it has no body statement.
* Node type is {@link Token#FOR}.
*/
public class ArrayComprehensionLoop extends ForInLoop {
public ArrayComprehensionLoop() {
}
public ArrayComprehensionLoop(int pos) {
super(pos);
}
public ArrayComprehensionLoop(int pos, int len) {
super(pos, len);
}
/**
* Returns {@code null} for loop body
* @return loop body (always {@code null} for this node type)
*/
@Override
public AstNode getBody() {
return null;
}
/**
* Throws an exception on attempts to set the loop body.
* @param body loop body
* @throws UnsupportedOperationException
*/
@Override
public void setBody(AstNode body) {
throw new UnsupportedOperationException("this node type has no body");
}
@Override
public String toSource(int depth) {
return makeIndent(depth)
+ " for "
+ (isForEach()?"each ":"")
+ "("
+ iterator.toSource(0)
+ (isForOf()?" of ":" in ")
+ iteratedObject.toSource(0)
+ ")";
}
/**
* Visits the iterator expression and the iterated object expression.
* There is no body-expression for this loop type.
*/
@Override
public void visit(NodeVisitor v) {
if (v.visit(this)) {
iterator.visit(v);
iteratedObject.visit(v);
}
}
}