com.facebook.buck.parser.JavaLibraryBuildRuleFactory.java Source code

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Here is the source code for com.facebook.buck.parser.JavaLibraryBuildRuleFactory.java

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/*
 * Copyright 2012-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.parser;

import com.facebook.buck.model.BuildTarget;
import com.facebook.buck.rules.AbstractBuildRuleBuilder;
import com.facebook.buck.rules.AnnotationProcessingParams;
import com.facebook.buck.rules.DefaultJavaLibraryRule;
import com.facebook.buck.java.JavacOptionsUtil;
import com.google.common.base.Optional;

import java.util.List;

public class JavaLibraryBuildRuleFactory extends AbstractBuildRuleFactory {

    public static final String ANNOTATION_PROCESSORS = "annotation_processors";

    @Override
    public DefaultJavaLibraryRule.Builder newBuilder() {
        return DefaultJavaLibraryRule.newJavaLibraryRuleBuilder();
    }

    @Override
    protected void amendBuilder(AbstractBuildRuleBuilder abstractBuilder, BuildRuleFactoryParams params)
            throws NoSuchBuildTargetException {
        DefaultJavaLibraryRule.Builder builder = ((DefaultJavaLibraryRule.Builder) abstractBuilder);

        Optional<String> proguardConfig = params.getOptionalStringAttribute("proguard_config");
        if (proguardConfig.isPresent()) {
            String proguardConfigFile = params.resolveFilePathRelativeToBuildFileDirectory(proguardConfig.get());
            builder.setProguardConfig(proguardConfigFile);
        }

        boolean exportDeps = params.getBooleanAttribute("export_deps");
        builder.setExportDeps(exportDeps);

        extractAnnotationProcessorParameters(builder.getAnnotationProcessingBuilder(), builder, params);

        Optional<String> sourceLevel = params.getOptionalStringAttribute("source");
        builder.setSourceLevel(sourceLevel.or(JavacOptionsUtil.DEFAULT_SOURCE_LEVEL));

        Optional<String> targetLevel = params.getOptionalStringAttribute("target");
        builder.setTargetLevel(targetLevel.or(JavacOptionsUtil.DEFAULT_TARGET_LEVEL));
    }

    static void extractAnnotationProcessorParameters(AnnotationProcessingParams.Builder annotationProcessingBuilder,
            AbstractBuildRuleBuilder buildRuleBuilder, BuildRuleFactoryParams params)
            throws NoSuchBuildTargetException {

        // annotation_processors
        //
        // Names of the classes used for annotation processing.  These must be implemented
        // in a BuildTarget listed in annotation_processor_deps.
        List<String> annotationProcessors = params.getOptionalListAttribute(ANNOTATION_PROCESSORS);
        if (!annotationProcessors.isEmpty()) {
            annotationProcessingBuilder.addAllProcessors(annotationProcessors);

            // annotation_processor_deps
            //
            // These are the targets that implement one or more of the annotation_processors.
            BuildTarget target = params.target;
            ParseContext buildFileParseContext = ParseContext.forBaseName(target.getBaseName());

            for (String processor : params.getOptionalListAttribute("annotation_processor_deps")) {
                BuildTarget buildTarget = params.buildTargetParser.parse(processor, buildFileParseContext);
                buildRuleBuilder.addDep(buildTarget.getFullyQualifiedName());
                annotationProcessingBuilder.addProcessorBuildTarget(buildTarget);
            }

            // annotation_processor_params
            //
            // These will be prefixed with "-A" when passing to javac.  They may be of the
            // form "parameter_name" or "parameter_name=string_value".
            for (String parameter : params.getOptionalListAttribute("annotation_processor_params")) {
                annotationProcessingBuilder.addParameter(parameter);
            }

            // annotation_processor_only
            //
            // If true, we only run annotation processors and do not compile.
            boolean processOnly = params.getBooleanAttribute("annotation_processor_only");
            annotationProcessingBuilder.setProcessOnly(processOnly);
        }
    }
}