google-nomulus/third_party/closure/compiler/closure_js_deps.bzl
2016-03-01 17:59:16 -05:00

54 lines
1.9 KiB
Python

# -*- mode: python; -*-
#
# Copyright 2016 Google Inc. 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 dependency files.
Generating this file is important because the deps-runfiles.js file tells the
Closure Library how to send requests to the web server to load goog.require'd
namespaces.
"""
load("//third_party/closure/compiler/private:defs.bzl",
"JS_FILE_TYPE",
"make_js_deps_runfiles")
def _impl(ctx):
srcs = set(order="compile")
for src in ctx.attr.srcs:
srcs += src.transitive_js_srcs
ctx.action(
inputs=list(srcs),
outputs=[ctx.outputs.out],
arguments=(["--output_file=%s" % (ctx.outputs.out.path)] +
[src.path for src in srcs]),
executable=ctx.executable._depswriter,
progress_message="Calculating %d JavaScript deps to %s" % (
len(srcs), ctx.outputs.out.short_path))
make_js_deps_runfiles(ctx, srcs)
return struct(files=set([ctx.outputs.out, ctx.outputs.runfiles]))
closure_js_deps = rule(
implementation=_impl,
attrs={
"srcs": attr.label_list(
allow_files=False,
providers=["transitive_js_srcs"]),
"_depswriter": attr.label(
default=Label("@closure_library//:depswriter"),
executable=True),
},
outputs={"out": "%{name}.js",
"runfiles": "%{name}-runfiles.js"})