com.google.gwt.dev.jjs.ast.JUnaryOperation Maven / Gradle / Ivy
/*
* Copyright 2007 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.dev.jjs.ast;
import com.google.gwt.dev.jjs.SourceInfo;
/**
* Java prefix or postfix operation expression.
*/
public abstract class JUnaryOperation extends JExpression {
private JExpression arg;
private final JUnaryOperator op;
public JUnaryOperation(SourceInfo info, JUnaryOperator op, JExpression arg) {
super(info);
this.op = op;
this.arg = arg;
}
public JExpression getArg() {
return arg;
}
public JUnaryOperator getOp() {
return op;
}
public JType getType() {
// Unary operators don't change the type of their expression
return arg.getType();
}
@Override
public boolean hasSideEffects() {
return getOp().isModifying() || arg.hasSideEffects();
}
public void traverse(JVisitor visitor, Context ctx) {
if (getOp().isModifying()) {
arg = visitor.acceptLvalue(arg);
} else {
arg = visitor.accept(arg);
}
}
}