com.facebook.buck.swift.SwiftDescriptions.java Source code

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Here is the source code for com.facebook.buck.swift.SwiftDescriptions.java

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/*
 * Copyright 2016-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.swift;

import static com.facebook.buck.cxx.NativeLinkable.Linkage.STATIC;
import static com.facebook.buck.swift.SwiftLibraryDescription.SWIFT_COMPANION_FLAVOR;
import static com.facebook.buck.swift.SwiftUtil.Constants.SWIFT_EXTENSION;

import com.facebook.buck.cxx.CxxLibraryDescription;
import com.facebook.buck.io.MorePaths;
import com.facebook.buck.model.BuildTarget;
import com.facebook.buck.rules.SourcePath;
import com.facebook.buck.rules.SourcePathResolver;
import com.facebook.buck.rules.SourceWithFlags;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.ImmutableSortedSet;

import java.util.Optional;

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

    static ImmutableSortedSet<SourcePath> filterSwiftSources(SourcePathResolver sourcePathResolver,
            ImmutableSet<SourceWithFlags> srcs) {
        ImmutableSortedSet.Builder<SourcePath> swiftSrcsBuilder = ImmutableSortedSet.naturalOrder();
        for (SourceWithFlags source : srcs) {
            if (MorePaths.getFileExtension(sourcePathResolver.getAbsolutePath(source.getSourcePath()))
                    .equalsIgnoreCase(SWIFT_EXTENSION)) {
                swiftSrcsBuilder.add(source.getSourcePath());
            }
        }
        return swiftSrcsBuilder.build();
    }

    static <A extends CxxLibraryDescription.Arg> void populateSwiftLibraryDescriptionArg(
            final SourcePathResolver sourcePathResolver, SwiftLibraryDescription.Arg output, final A args,
            BuildTarget buildTarget) {

        output.srcs = filterSwiftSources(sourcePathResolver, args.srcs);
        if (args instanceof HasSwiftCompilerFlags) {
            output.compilerFlags = ((HasSwiftCompilerFlags) args).getSwiftCompilerFlags();
        } else {
            output.compilerFlags = args.compilerFlags;
        }
        output.frameworks = args.frameworks;
        output.libraries = args.libraries;
        output.deps = args.deps;
        output.supportedPlatformsRegex = args.supportedPlatformsRegex;
        output.moduleName = args.moduleName.map(Optional::of).orElse(Optional.of(buildTarget.getShortName()));
        output.enableObjcInterop = Optional.of(true);
        output.bridgingHeader = args.bridgingHeader;

        boolean isCompanionTarget = buildTarget.getFlavors().contains(SWIFT_COMPANION_FLAVOR);
        output.preferredLinkage = isCompanionTarget ? Optional.of(STATIC) : args.preferredLinkage;
    }

}