| # Copyright 2017 Google Inc. All Rights Reserved. | 
 | # Copyright 2017 The Bazel Authors. 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. | 
 |  | 
 | """This rule exposes the source jar of a java_*_library rule as a label.""" | 
 |  | 
 | load("@rules_java//java/common:java_info.bzl", "JavaInfo") | 
 |  | 
 | def _java_library_srcs_impl(ctx): | 
 |     if len(ctx.attr.deps) != 1: | 
 |         fail("Only one deps value supported", "deps") | 
 |     dep = ctx.attr.deps[0] | 
 |     return [DefaultInfo(files = depset(dep[JavaInfo].source_jars))] | 
 |  | 
 | _java_library_srcs = rule( | 
 |     implementation = _java_library_srcs_impl, | 
 |     attrs = { | 
 |         "deps": attr.label_list( | 
 |             mandatory = True, | 
 |             allow_empty = False, | 
 |             providers = [JavaInfo], | 
 |         ), | 
 |     }, | 
 | ) | 
 |  | 
 | def java_library_srcs(name, deps, visibility = None, **kwargs): | 
 |     """Provides the source jars generated by a java_*_library rule.""" | 
 |     _java_library_srcs(name = name, deps = deps, visibility = visibility, **kwargs) |