Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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86 lines
3.1 KiB
86 lines
3.1 KiB
2 years ago
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# Copyright (c) 2009-2021, Google LLC
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of Google LLC nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL Google LLC BE LIABLE FOR ANY
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# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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"""Internal rules for building upb."""
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load(":upb_proto_library.bzl", "GeneratedSrcsInfo")
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# upb_amalgamation() rule, with file_list aspect.
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SrcList = provider(
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fields = {
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"srcs": "list of srcs",
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},
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)
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def _file_list_aspect_impl(target, ctx):
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if GeneratedSrcsInfo in target:
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srcs = target[GeneratedSrcsInfo]
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return [SrcList(srcs = srcs.srcs + srcs.hdrs)]
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srcs = []
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for src in ctx.rule.attr.srcs:
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srcs += src.files.to_list()
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for hdr in ctx.rule.attr.hdrs:
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srcs += hdr.files.to_list()
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for hdr in ctx.rule.attr.textual_hdrs:
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srcs += hdr.files.to_list()
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return [SrcList(srcs = srcs)]
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_file_list_aspect = aspect(
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implementation = _file_list_aspect_impl,
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)
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def _upb_amalgamation(ctx):
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inputs = []
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for lib in ctx.attr.libs:
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inputs += lib[SrcList].srcs
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srcs = [src for src in inputs if not src.path.endswith("hpp")]
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ctx.actions.run(
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inputs = inputs,
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outputs = ctx.outputs.outs,
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arguments = [f.path for f in ctx.outputs.outs] + [f.path for f in srcs],
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progress_message = "Making amalgamation",
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executable = ctx.executable._amalgamator,
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)
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return []
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upb_amalgamation = rule(
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attrs = {
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"_amalgamator": attr.label(
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executable = True,
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cfg = "exec",
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default = "//bazel:amalgamate",
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),
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"prefix": attr.string(
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default = "",
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),
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"libs": attr.label_list(aspects = [_file_list_aspect]),
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"outs": attr.output_list(),
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"strip_import_prefix": attr.string_list(),
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},
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implementation = _upb_amalgamation,
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)
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