org.mozilla.javascript.ast.WhileLoop Maven / Gradle / Ivy
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/* -*- 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;
/**
* While statement. Node type is {@link Token#WHILE}.
*
*
WhileStatement:
* while ( Expression ) Statement
*/
public class WhileLoop extends Loop {
private AstNode condition;
{
type = Token.WHILE;
}
public WhileLoop() {
}
public WhileLoop(int pos) {
super(pos);
}
public WhileLoop(int pos, int len) {
super(pos, len);
}
/**
* Returns loop condition
*/
public AstNode getCondition() {
return condition;
}
/**
* Sets loop condition
* @throws IllegalArgumentException} if condition is {@code null}
*/
public void setCondition(AstNode condition) {
assertNotNull(condition);
this.condition = condition;
condition.setParent(this);
}
@Override
public String toSource(int depth) {
StringBuilder sb = new StringBuilder();
sb.append(makeIndent(depth));
sb.append("while (");
sb.append(condition.toSource(0));
sb.append(") ");
if (body.getType() == Token.BLOCK) {
sb.append(body.toSource(depth).trim());
sb.append("\n");
} else {
sb.append("\n").append(body.toSource(depth+1));
}
return sb.toString();
}
/**
* Visits this node, the condition, then the body.
*/
@Override
public void visit(NodeVisitor v) {
if (v.visit(this)) {
condition.visit(v);
body.visit(v);
}
}
}