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# 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"])
})
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