com.facebook.buck.apple.RuleUtils.java Source code

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Here is the source code for com.facebook.buck.apple.RuleUtils.java

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/*
 * Copyright 2013-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.apple;

import com.facebook.buck.rules.SourcePath;
import com.facebook.buck.rules.coercer.AppleSource;
import com.facebook.buck.rules.coercer.Pair;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;

/**
 * Common conversion functions from raw Description Arg specifications.
 */
public class RuleUtils {

    /** Utility class: do not instantiate. */
    private RuleUtils() {
    }

    /**
     * Extract the source and header paths and flags from the input list
     * and populate the output collections.
     *
     * @param outputSources The ordered tree of sources, headers, and groups (as
     *        they should appear in a generated Xcode project) will be added to
     *        this builder.
     * @param outputPerFileFlags per file flags will be added to this builder
     * @param items input list of sources
     */
    public static void extractSourcePaths(ImmutableList.Builder<GroupedSource> outputSources,
            ImmutableMap.Builder<SourcePath, String> outputPerFileFlags, ImmutableList<AppleSource> items) {
        for (AppleSource item : items) {
            switch (item.getType()) {
            case SOURCE_PATH:
                outputSources.add(GroupedSource.ofSourcePath(item.getSourcePath()));
                break;
            case SOURCE_PATH_WITH_FLAGS:
                Pair<SourcePath, String> pair = item.getSourcePathWithFlags();
                outputSources.add(GroupedSource.ofSourcePath(pair.getFirst()));
                outputPerFileFlags.put(pair.getFirst(), pair.getSecond());
                break;
            case SOURCE_GROUP:
                Pair<String, ImmutableList<AppleSource>> sourceGroup = item.getSourceGroup();
                String sourceGroupName = sourceGroup.getFirst();
                ImmutableList<AppleSource> sourceGroupItems = sourceGroup.getSecond();
                ImmutableList.Builder<GroupedSource> nestedSourceGroups = ImmutableList.builder();
                extractSourcePaths(nestedSourceGroups, outputPerFileFlags, sourceGroupItems);
                outputSources.add(GroupedSource.ofSourceGroup(sourceGroupName, nestedSourceGroups.build()));
                break;
            default:
                throw new RuntimeException("Unhandled AppleSource item type: " + item.getType());
            }
        }
    }
}