/*
* Copyright 2013 Google Inc. All rights reserved.
*
* 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.errorprone.refaster;
import static com.google.errorprone.refaster.Unifier.unifyNullable;
import com.google.auto.value.AutoValue;
import com.sun.source.tree.ReturnTree;
import com.sun.source.tree.TreeVisitor;
import com.sun.tools.javac.tree.JCTree.JCReturn;
import javax.annotation.Nullable;
/**
* {@link UTree} representation of a {@link ReturnTree}.
*
* @author lowasser@google.com
*/
@AutoValue
public abstract class UReturn extends USimpleStatement implements ReturnTree {
public static UReturn create(UExpression expression) {
return new AutoValue_UReturn(expression);
}
@Override
@Nullable
public abstract UExpression getExpression();
@Override
public <R, D> R accept(TreeVisitor<R, D> visitor, D data) {
return visitor.visitReturn(this, data);
}
@Override
public Kind getKind() {
return Kind.RETURN;
}
@Override
public JCReturn inline(Inliner inliner) throws CouldNotResolveImportException {
return inliner.maker().Return(getExpression().inline(inliner));
}
@Override
@Nullable
public Choice<Unifier> visitReturn(ReturnTree ret, @Nullable Unifier unifier) {
return unifyNullable(unifier, getExpression(), ret.getExpression());
}
}