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# Copyright 2022 Google LLC. 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.
"""kt_friend_visitor"""
load("//:visibility.bzl", "RULES_KOTLIN")
def is_eligible_friend(target, friend):
"""
Determines if `target` is allowed to use `internal` members of `friend`
To be eligible, one of:
1. `target` and `friend` in same pkg
2. `target` in `testing/` subpkg of `friend` pkg
3. `target` in `javatests/` pkg, `friend` in parallel `java/` pkg
4. `target` in `test/java/` pkg, `friend` in parallel `main/java/` pkg
Args:
target: (Target) The current target
friend: (Target) A potential friend of `target`
Returns:
True if `friend` is an eligible friend of `target`.
"""
target_pkg = target.label.package + "/"
friend_pkg = friend.label.package + "/"
if target_pkg == friend_pkg:
# Case 1
return True
if target_pkg.removesuffix("testing/") == friend_pkg:
# Case 2
return True
if "javatests/" in target_pkg and "java/" in friend_pkg:
# Case 3
target_java_pkg = target_pkg.rsplit("javatests/", 1)[1]
friend_java_pkg = friend_pkg.rsplit("java/", 1)[1]
if target_java_pkg == friend_java_pkg:
return True
if ("test/java/" in target_pkg and "main/java/" in friend_pkg and
True):
# Case 4
target_split = target_pkg.rsplit("test/java/", 1)
friend_split = friend_pkg.rsplit("main/java/", 1)
if target_split == friend_split:
return True
return False
def _get_output_jars(target, _ctx_rule):
# We can't simply use `JavaInfo.compile_jars` because we only want the JARs directly created by
# `target`, and not JARs from its `exports`
return [output.compile_jar for output in target[JavaInfo].java_outputs if output.compile_jar]
kt_friend_jars_visitor = struct(
name = "friend_jars",
visit_target = _get_output_jars,
filter_edge = is_eligible_friend,
finish_expansion = None,
process_unvisited_target = None,
)
def _get_output_labels(target, _):
return [target.label]
kt_friend_labels_visitor = struct(
name = "friend_labels",
visit_target = _get_output_labels,
filter_edge = is_eligible_friend,
finish_expansion = None,
process_unvisited_target = None,
)
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