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

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Here is the source code for com.google.errorprone.refaster.UAnyOf.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 com.google.auto.value.AutoValue;
import com.google.common.base.Function;
import com.google.common.collect.ImmutableList;
import com.sun.source.tree.Tree;
import com.sun.source.tree.TreeVisitor;
import com.sun.tools.javac.tree.JCTree.JCExpression;

/**
 * {@code UExpression} allowing a match against any of a list of expressions.
 *
 * @author lowasser@google.com (Louis Wasserman)
 */
@AutoValue
public abstract class UAnyOf extends UExpression {
    public static UAnyOf create(UExpression... expressions) {
        return create(ImmutableList.copyOf(expressions));
    }

    public static UAnyOf create(Iterable<? extends UExpression> expressions) {
        return new AutoValue_UAnyOf(ImmutableList.copyOf(expressions));
    }

    abstract ImmutableList<UExpression> expressions();

    @Override
    public UExpression negate() {
        ImmutableList.Builder<UExpression> negations = ImmutableList.builder();
        for (UExpression expression : expressions()) {
            negations.add(expression.negate());
        }
        return create(negations.build());
    }

    @Override
    protected Choice<Unifier> defaultAction(final Tree tree, final Unifier unifier) {
        return Choice.from(expressions()).thenChoose(new Function<UExpression, Choice<Unifier>>() {
            @Override
            public Choice<Unifier> apply(UExpression expression) {
                return expression.unify(UParens.skipParens(tree), unifier.fork());
            }
        });
    }

    @Override
    public JCExpression inline(Inliner inliner) throws CouldNotResolveImportException {
        throw new UnsupportedOperationException("anyOf should not appear in an @AfterTemplate");
    }

    @Override
    public <R, D> R accept(TreeVisitor<R, D> visitor, D data) {
        return expressions().get(0).accept(visitor, data);
    }

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