com.google.errorprone.refaster.UForLoop.java Source code

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Here is the source code for com.google.errorprone.refaster.UForLoop.java

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/*
 * 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.unifications;

import com.google.auto.value.AutoValue;
import com.google.common.collect.ImmutableList;
import com.sun.source.tree.ForLoopTree;
import com.sun.source.tree.TreeVisitor;
import com.sun.tools.javac.tree.JCTree.JCExpressionStatement;
import com.sun.tools.javac.tree.JCTree.JCForLoop;
import com.sun.tools.javac.tree.JCTree.JCStatement;
import java.util.List;
import javax.annotation.Nullable;

/**
 * {@link UTree} representation of a {@link ForLoopTree}.
 * 
 * @author lowasser@google.com (Louis Wasserman)
 */
@AutoValue
abstract class UForLoop extends USimpleStatement implements ForLoopTree {

    public static UForLoop create(Iterable<? extends UStatement> initializer, @Nullable UExpression condition,
            Iterable<? extends UExpressionStatement> update, UStatement statement) {
        return new AutoValue_UForLoop(ImmutableList.copyOf(initializer), condition, ImmutableList.copyOf(update),
                (USimpleStatement) statement);
    }

    @Override
    public abstract List<UStatement> getInitializer();

    @Override
    @Nullable
    public abstract UExpression getCondition();

    @Override
    public abstract List<UExpressionStatement> getUpdate();

    @Override
    public abstract USimpleStatement getStatement();

    @Override
    @Nullable
    public Choice<Unifier> visitForLoop(ForLoopTree loop, @Nullable Unifier unifier) {
        return UBlock.unifyStatementList(getInitializer(), loop.getInitializer(), unifier)
                .thenChoose(unifications(getCondition(), loop.getCondition()))
                .thenChoose(unifications(getUpdate(), loop.getUpdate()))
                .thenChoose(unifications(getStatement(), loop.getStatement()));
    }

    @Override
    public <R, D> R accept(TreeVisitor<R, D> visitor, D data) {
        return visitor.visitForLoop(this, data);
    }

    @Override
    public Kind getKind() {
        return Kind.FOR_LOOP;
    }

    @Override
    public JCForLoop inline(Inliner inliner) throws CouldNotResolveImportException {
        return inliner.maker().ForLoop(UBlock.inlineStatementList(getInitializer(), inliner),
                (getCondition() == null) ? null : getCondition().inline(inliner), com.sun.tools.javac.util.List
                        .convert(JCExpressionStatement.class, inliner.<JCStatement>inlineList(getUpdate())),
                getStatement().inline(inliner));
    }
}