com.facebook.buck.rules.coercer.SourceWithFlags.java Source code

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Here is the source code for com.facebook.buck.rules.coercer.SourceWithFlags.java

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/*
 * Copyright 2014-present Facebook, 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.facebook.buck.rules.coercer;

import com.facebook.buck.rules.SourcePath;
import com.facebook.buck.util.immutables.BuckStyleImmutable;
import com.google.common.base.Function;
import com.google.common.collect.ComparisonChain;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Ordering;

import org.immutables.value.Value;

import java.util.List;

/**
 * Simple type representing a {@link SourcePath} and a list of file-specific flags.
 */
@Value.Immutable
@BuckStyleImmutable
public abstract class SourceWithFlags implements Comparable<SourceWithFlags> {

    @Value.Parameter
    public abstract SourcePath getSourcePath();

    @Value.Parameter
    public abstract List<String> getFlags();

    @Override
    public int compareTo(SourceWithFlags that) {
        return ComparisonChain.start().compare(this.getSourcePath(), that.getSourcePath())
                .compare(this.getFlags(), that.getFlags(), Ordering.<String>natural().lexicographical()).result();
    }

    public static SourceWithFlags of(SourcePath sourcePath) {
        return ImmutableSourceWithFlags.of(sourcePath, ImmutableList.<String>of());
    }

    public static SourceWithFlags of(SourcePath sourcePath, List<String> flags) {
        return ImmutableSourceWithFlags.of(sourcePath, ImmutableList.copyOf(flags));
    }

    public static final Function<SourceWithFlags, SourcePath> TO_SOURCE_PATH = new Function<SourceWithFlags, SourcePath>() {
        @Override
        public SourcePath apply(SourceWithFlags sourceWithFlags) {
            return sourceWithFlags.getSourcePath();
        }
    };

}