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# Copyright 2020 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.
"""Bazel Desugar Commands."""
def _desugar(
ctx,
input,
output = None,
classpath = None,
bootclasspath = [],
min_sdk_version = 0,
library_desugaring = True,
desugar_exec = None,
toolchain_type = None):
"""Desugars a JAR.
Args:
ctx: The context.
input: File. The jar to be desugared.
output: File. The desugared jar.
classpath: Depset of Files. The transitive classpath needed to resolve symbols in the input jar.
bootclasspath: List of Files. Bootclasspaths that was used to compile the input jar with.
min_sdk_version: Integer. The minimum targeted sdk version.
library_desugaring: Boolean. Whether to enable core library desugaring.
desugar_exec: File. The executable desugar file.
"""
args = ctx.actions.args()
args.use_param_file("@%s", use_always = True) # Required for workers.
args.set_param_file_format("multiline")
args.add("--input", input)
args.add("--output", output)
args.add_all(classpath, before_each = "--classpath_entry")
args.add_all(bootclasspath, before_each = "--bootclasspath_entry")
if library_desugaring:
if ctx.fragments.android.check_desugar_deps:
args.add("--emit_dependency_metadata_as_needed")
if ctx.fragments.android.desugar_java8_libs and library_desugaring:
args.add("--desugar_supported_core_libs")
if min_sdk_version > 0:
args.add("--min_sdk_version", str(min_sdk_version))
ctx.actions.run(
inputs = depset([input] + bootclasspath, transitive = [classpath]),
outputs = [output],
executable = desugar_exec,
arguments = [args],
mnemonic = "Desugar",
progress_message = "Desugaring " + input.short_path + " for Android",
execution_requirements = {"supports-workers": "1"},
toolchain = toolchain_type,
)
desugar = struct(
desugar = _desugar,
)
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