| # Copyright 2015 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. |
| |
| """Build definitions for JavaScript libraries. The library targets may be used |
| in closure_js_binary rules. |
| |
| Example: |
| |
| closure_js_library( |
| name = "hello_lib", |
| srcs = ["hello.js"], |
| deps = ["//third_party/javascript/closure_library"], |
| ) |
| """ |
| |
| _JS_FILE_TYPE = FileType([".js"]) |
| |
| def _impl(ctx): |
| externs = set(order="compile") |
| srcs = set(order="compile") |
| for dep in ctx.attr.deps: |
| externs += dep.transitive_js_externs |
| srcs += dep.transitive_js_srcs |
| |
| externs += _JS_FILE_TYPE.filter(ctx.files.externs) |
| srcs += _JS_FILE_TYPE.filter(ctx.files.srcs) |
| |
| return struct( |
| files=set(), transitive_js_externs=externs, transitive_js_srcs=srcs) |
| |
| closure_js_library = rule( |
| implementation=_impl, |
| attrs={ |
| "externs": attr.label_list(allow_files=_JS_FILE_TYPE), |
| "srcs": attr.label_list(allow_files=_JS_FILE_TYPE), |
| "deps": attr.label_list( |
| providers=["transitive_js_externs", "transitive_js_srcs"]) |
| }) |