Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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40 lines
1.2 KiB
40 lines
1.2 KiB
1 year ago
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"""Internal rule implementation for upb_*_proto_library() rules."""
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def _filter_none(elems):
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out = []
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for elem in elems:
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if elem:
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out.append(elem)
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return out
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def upb_proto_rule_impl(ctx, cc_info_provider, srcs_provider):
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"""An implementation for upb_*proto_library() rules.
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Args:
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ctx: The rule `ctx` argument
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cc_info_provider: The provider containing a wrapped CcInfo that will be exposed to users who
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depend on this rule.
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srcs_provider: The provider containing the generated source files. This will be used to make
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the DefaultInfo return the source files.
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Returns:
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Providers for this rule.
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"""
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if len(ctx.attr.deps) != 1:
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fail("only one deps dependency allowed.")
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dep = ctx.attr.deps[0]
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srcs = dep[srcs_provider].srcs
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cc_info = dep[cc_info_provider].cc_info
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lib = cc_info.linking_context.linker_inputs.to_list()[0].libraries[0]
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files = _filter_none([
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lib.static_library,
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lib.pic_static_library,
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lib.dynamic_library,
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])
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return [
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DefaultInfo(files = depset(files + srcs.hdrs + srcs.srcs)),
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srcs,
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cc_info,
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]
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