Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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85 lines
3.1 KiB
85 lines
3.1 KiB
# 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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