com.facebook.buck.core.parser.buildtargetparser.FlavorParser.java Source code

Introduction

Here is the source code for com.facebook.buck.core.parser.buildtargetparser.FlavorParser.java

Source

/*
 * 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.core.parser.buildtargetparser;

import com.facebook.buck.core.util.log.Logger;
import com.google.common.base.Splitter;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Iterables;
import java.util.Set;
import java.util.concurrent.ConcurrentSkipListSet;

/** Parses a string containing one or more flavor names. */
class FlavorParser {
    private static final Logger LOG = Logger.get(FlavorParser.class);
    private static final ImmutableMap<String, String> DEPRECATED_FLAVORS = ImmutableMap.of("dynamic", "shared");

    private final Set<String> deprecatedFlavorWarningShown = new ConcurrentSkipListSet<>();

    /**
     * Given a comma-separated string of flavors, returns an iterable containing the separated names
     * of the flavors inside.
     *
     * <p>Also maps deprecated flavor names to their supported names.
     */
    public Iterable<String> parseFlavorString(String flavorString) {
        return Iterables.transform(Splitter.on(",").omitEmptyStrings().trimResults().split(flavorString),
                flavor -> {
                    String mapped = DEPRECATED_FLAVORS.get(flavor);
                    if (mapped != null) {
                        // Show a warning the first time a deprecated flavor is used.
                        if (deprecatedFlavorWarningShown.add(flavor)) {
                            LOG.warn("Flavor %s is deprecated; use %s instead.", flavor, mapped);
                        }
                        return mapped;
                    } else {
                        return flavor;
                    }
                });
    }
}