com.facebook.buck.cxx.AbstractCxxPreprocessorInput.java Source code

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Here is the source code for com.facebook.buck.cxx.AbstractCxxPreprocessorInput.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.cxx;

import com.facebook.buck.model.BuildTarget;
import com.facebook.buck.rules.BuildRule;
import com.facebook.buck.rules.BuildRuleResolver;
import com.facebook.buck.rules.SourcePathRuleFinder;
import com.facebook.buck.rules.coercer.FrameworkPath;
import com.facebook.buck.util.immutables.BuckStyleImmutable;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMultimap;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Multimap;

import org.immutables.value.Value;

import java.util.Optional;

/**
 * The components that get contributed to a top-level run of the C++ preprocessor.
 */
@Value.Immutable
@BuckStyleImmutable
abstract class AbstractCxxPreprocessorInput {

    @Value.Parameter
    public abstract Multimap<CxxSource.Type, String> getPreprocessorFlags();

    @Value.Parameter
    public abstract ImmutableList<CxxHeaders> getIncludes();

    // Framework paths.
    @Value.Parameter
    public abstract ImmutableSet<FrameworkPath> getFrameworks();

    // The build rules which produce headers found in the includes below.
    @Value.Parameter
    protected abstract ImmutableSet<BuildTarget> getRules();

    public Iterable<BuildRule> getDeps(BuildRuleResolver ruleResolver, SourcePathRuleFinder ruleFinder) {
        ImmutableList.Builder<BuildRule> builder = ImmutableList.builder();
        for (CxxHeaders cxxHeaders : getIncludes()) {
            builder.addAll(cxxHeaders.getDeps(ruleFinder));
        }
        builder.addAll(ruleResolver.getAllRules(getRules()));

        for (FrameworkPath frameworkPath : getFrameworks()) {
            if (frameworkPath.getSourcePath().isPresent()) {
                Optional<BuildRule> frameworkRule = ruleFinder.getRule(frameworkPath.getSourcePath().get());
                if (frameworkRule.isPresent()) {
                    builder.add(frameworkRule.get());
                }
            }
        }

        return builder.build();
    }

    public static final CxxPreprocessorInput EMPTY = CxxPreprocessorInput.builder().build();

    public static CxxPreprocessorInput concat(Iterable<CxxPreprocessorInput> inputs) {
        ImmutableMultimap.Builder<CxxSource.Type, String> preprocessorFlags = ImmutableMultimap.builder();
        ImmutableList.Builder<CxxHeaders> headers = ImmutableList.builder();
        ImmutableSet.Builder<FrameworkPath> frameworks = ImmutableSet.builder();
        ImmutableSet.Builder<BuildTarget> rules = ImmutableSet.builder();

        for (CxxPreprocessorInput input : inputs) {
            preprocessorFlags.putAll(input.getPreprocessorFlags());
            headers.addAll(input.getIncludes());
            frameworks.addAll(input.getFrameworks());
            rules.addAll(input.getRules());
        }

        return CxxPreprocessorInput.of(preprocessorFlags.build(), headers.build(), frameworks.build(),
                rules.build());
    }

}