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// Copyright 2014 Google Inc. All rights reserved.
//
// 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.google.devtools.build.lib.bazel.rules.java;

import static com.google.devtools.build.lib.packages.Attribute.ANY_EDGE;
import static com.google.devtools.build.lib.packages.Attribute.attr;
import static com.google.devtools.build.lib.packages.Type.LABEL_LIST;

import com.google.common.collect.ImmutableSet;
import com.google.devtools.build.lib.analysis.BlazeRule;
import com.google.devtools.build.lib.analysis.RuleDefinition;
import com.google.devtools.build.lib.analysis.RuleDefinitionEnvironment;
import com.google.devtools.build.lib.bazel.rules.java.BazelJavaRuleClasses.IjarBaseRule;
import com.google.devtools.build.lib.packages.RuleClass;
import com.google.devtools.build.lib.packages.RuleClass.Builder;
import com.google.devtools.build.lib.rules.java.JavaImportBaseRule;

/**
 * Rule definition for the java_import rule.
 */
@BlazeRule(name = "java_import",
             ancestors = { JavaImportBaseRule.class, IjarBaseRule.class },
             factoryClass = BazelJavaImport.class)
public final class BazelJavaImportRule implements RuleDefinition {
  @Override
  public RuleClass build(Builder builder, RuleDefinitionEnvironment env) {
    return builder
        /* <!-- #BLAZE_RULE(java_import).ATTRIBUTE(exports) -->
        Targets to make available to users of this rule.
        ${SYNOPSIS}
        See <a href="#java_library.exports">java_library.exports</a>.
        <!-- #END_BLAZE_RULE.ATTRIBUTE --> */
        .add(attr("exports", LABEL_LIST)
            .allowedRuleClasses(ImmutableSet.of(
                "java_library", "java_import", "cc_library", "cc_binary"))
            .allowedFileTypes()  // none allowed
            .validityPredicate(ANY_EDGE))
        .build();

  }
}