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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.
"""Convenience macro for getting `kt_compiler_plugin` into uncooperative rules.
Some targets (Z), where we would like to export a plugin (Y), use rules that don't
support `exported_plugins` (e.g android_library). To solve this, we create a dummy
target (X) that has `X.exported_plugins = [Y]`, and then set `Z.exports = [Y]`.
This creates a chain of exports for `kt_traverse_exports` to follow when discovering
`kt_compiler_plugin`s.
"""
load(":compiler_plugin.bzl", "kt_compiler_plugin")
load(":jvm_import.bzl", "kt_jvm_import")
def _kt_compiler_plugin_export(
name,
visibility = [],
compatible_with = [],
**kwargs):
if not name.endswith("_plugin_export"):
fail()
basename = name.replace("_plugin_export", "")
kt_jvm_import(
name = name,
exported_plugins = [basename + "_plugin"],
jars = [basename + "_empty_jar"],
compatible_with = compatible_with,
visibility = visibility,
neverlink = True, # Don't link kotlin stdlib into Java users
)
kt_compiler_plugin(
name = basename + "_plugin",
visibility = visibility,
compatible_with = compatible_with,
**kwargs
)
native.genrule(
name = basename + "_empty_jar",
visibility = visibility,
outs = [name + "_empty.jar"],
cmd = """$(location @bazel_tools//tools/zip:zipper) c $@ "assets/_empty=" """,
compatible_with = compatible_with,
tools = ["@bazel_tools//tools/zip:zipper"],
)
kt_compiler_plugin_export = _kt_compiler_plugin_export
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