| # pylint: disable=g-bad-file-header |
| # 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. |
| """Skylark rule to be used for toolchain "types". |
| Blaze will allow a toolchain category to be any label, but we use an |
| empty rule in particular in order to add behavior if the need arises. |
| def _toolchain_category_impl(ctx): |
| ctx = ctx # unused argument |
| toolchain_category = rule(_toolchain_category_impl, attrs = {}) |
