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@ -10,496 +10,26 @@ |
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- upb_proto_reflection_library() |
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""" |
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load("@bazel_skylib//lib:paths.bzl", "paths") |
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# begin:google_only |
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# load("@bazel_tools//tools/cpp:toolchain_utils.bzl", "find_cpp_toolchain", "use_cpp_toolchain") |
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# end:google_only |
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# begin:github_only |
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# Compatibility code for Bazel 4.x. Remove this when we drop support for Bazel 4.x. |
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load("@bazel_tools//tools/cpp:toolchain_utils.bzl", "find_cpp_toolchain") |
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def use_cpp_toolchain(): |
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return ["@bazel_tools//tools/cpp:toolchain_type"] |
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# end:github_only |
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# Generic support code ######################################################### |
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# begin:github_only |
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_is_google3 = False |
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# end:github_only |
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# begin:google_only |
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# _is_google3 = True |
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# end:google_only |
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def _get_real_short_path(file): |
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# For some reason, files from other archives have short paths that look like: |
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# ../com_google_protobuf/google/protobuf/descriptor.proto |
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short_path = file.short_path |
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if short_path.startswith("../"): |
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second_slash = short_path.index("/", 3) |
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short_path = short_path[second_slash + 1:] |
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# Sometimes it has another few prefixes like: |
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# _virtual_imports/any_proto/google/protobuf/any.proto |
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# benchmarks/_virtual_imports/100_msgs_proto/benchmarks/100_msgs.proto |
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# We want just google/protobuf/any.proto. |
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virtual_imports = "_virtual_imports/" |
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if virtual_imports in short_path: |
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short_path = short_path.split(virtual_imports)[1].split("/", 1)[1] |
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return short_path |
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def _get_real_root(ctx, file): |
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real_short_path = _get_real_short_path(file) |
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root = file.path[:-len(real_short_path) - 1] |
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if not _is_google3 and ctx.rule.attr.strip_import_prefix: |
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root = paths.join(root, ctx.rule.attr.strip_import_prefix[1:]) |
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return root |
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def _generate_output_file(ctx, src, extension): |
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package = ctx.label.package |
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if not _is_google3: |
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strip_import_prefix = ctx.rule.attr.strip_import_prefix |
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if strip_import_prefix and strip_import_prefix != "/": |
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if not package.startswith(strip_import_prefix[1:]): |
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fail("%s does not begin with prefix %s" % (package, strip_import_prefix)) |
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package = package[len(strip_import_prefix):] |
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real_short_path = _get_real_short_path(src) |
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real_short_path = paths.relativize(real_short_path, package) |
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output_filename = paths.replace_extension(real_short_path, extension) |
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ret = ctx.actions.declare_file(output_filename) |
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return ret |
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def _generate_include_path(src, out, extension): |
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short_path = _get_real_short_path(src) |
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short_path = paths.replace_extension(short_path, extension) |
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if not out.path.endswith(short_path): |
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fail("%s does not end with %s" % (out.path, short_path)) |
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return out.path[:-len(short_path)] |
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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 _cc_library_func(ctx, name, hdrs, srcs, copts, includes, dep_ccinfos): |
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"""Like cc_library(), but callable from rules. |
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Args: |
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ctx: Rule context. |
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name: Unique name used to generate output files. |
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hdrs: Public headers that can be #included from other rules. |
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srcs: C/C++ source files. |
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copts: Additional options for cc compilation. |
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includes: Additional include paths. |
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dep_ccinfos: CcInfo providers of dependencies we should build/link against. |
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Returns: |
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CcInfo provider for this compilation. |
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""" |
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compilation_contexts = [info.compilation_context for info in dep_ccinfos] |
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linking_contexts = [info.linking_context for info in dep_ccinfos] |
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toolchain = find_cpp_toolchain(ctx) |
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feature_configuration = cc_common.configure_features( |
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ctx = ctx, |
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cc_toolchain = toolchain, |
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requested_features = ctx.features, |
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unsupported_features = ctx.disabled_features, |
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) |
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(compilation_context, compilation_outputs) = cc_common.compile( |
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actions = ctx.actions, |
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feature_configuration = feature_configuration, |
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cc_toolchain = toolchain, |
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name = name, |
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srcs = srcs, |
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includes = includes, |
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public_hdrs = hdrs, |
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user_compile_flags = copts, |
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compilation_contexts = compilation_contexts, |
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) |
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# buildifier: disable=unused-variable |
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(linking_context, linking_outputs) = cc_common.create_linking_context_from_compilation_outputs( |
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actions = ctx.actions, |
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name = name, |
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feature_configuration = feature_configuration, |
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cc_toolchain = toolchain, |
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compilation_outputs = compilation_outputs, |
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linking_contexts = linking_contexts, |
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disallow_dynamic_library = cc_common.is_enabled(feature_configuration = feature_configuration, feature_name = "targets_windows") or not cc_common.is_enabled(feature_configuration = feature_configuration, feature_name = "supports_dynamic_linker"), |
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) |
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return CcInfo( |
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compilation_context = compilation_context, |
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linking_context = linking_context, |
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) |
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# Dummy rule to expose select() copts to aspects ############################## |
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UpbProtoLibraryCoptsInfo = provider( |
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"Provides copts for upb proto targets", |
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fields = { |
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"copts": "copts for upb_proto_library()", |
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}, |
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) |
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def upb_proto_library_copts_impl(ctx): |
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return UpbProtoLibraryCoptsInfo(copts = ctx.attr.copts) |
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upb_proto_library_copts = rule( |
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implementation = upb_proto_library_copts_impl, |
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attrs = {"copts": attr.string_list(default = [])}, |
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) |
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# upb_proto_library / upb_proto_reflection_library shared code ################# |
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GeneratedSrcsInfo = provider( |
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"Provides generated headers and sources", |
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fields = { |
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"srcs": "list of srcs", |
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"hdrs": "list of hdrs", |
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"thunks": "Experimental, do not use. List of srcs defining C API. Incompatible with hdrs.", |
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"includes": "list of extra includes", |
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}, |
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) |
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def _concat_lists(lists): |
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ret = [] |
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for lst in lists: |
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ret = ret + lst |
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return ret |
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def _merge_generated_srcs(srcs): |
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return GeneratedSrcsInfo( |
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srcs = _concat_lists([s.srcs for s in srcs]), |
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hdrs = _concat_lists([s.hdrs for s in srcs]), |
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thunks = _concat_lists([s.thunks for s in srcs]), |
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includes = _concat_lists([s.includes for s in srcs]), |
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) |
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UpbWrappedCcInfo = provider("Provider for cc_info for protos", fields = ["cc_info", "cc_info_with_thunks"]) |
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_UpbDefsWrappedCcInfo = provider("Provider for cc_info for protos", fields = ["cc_info"]) |
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_UpbWrappedGeneratedSrcsInfo = provider("Provider for generated sources", fields = ["srcs"]) |
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_WrappedDefsGeneratedSrcsInfo = provider( |
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"Provider for generated reflective sources", |
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fields = ["srcs"], |
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load( |
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"//upb/bazel:upb_c_proto_library.bzl", |
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_UpbWrappedCcInfo = "UpbWrappedCcInfo", |
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_upb_c_proto_library = "upb_c_proto_library", |
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_upb_c_proto_library_aspect = "upb_c_proto_library_aspect", |
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) |
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def _generate_upb_protos(ctx, generator, proto_info, proto_sources): |
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if len(proto_sources) == 0: |
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return GeneratedSrcsInfo(srcs = [], hdrs = [], thunks = [], includes = []) |
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ext = "." + generator |
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tool = getattr(ctx.executable, "_gen_" + generator) |
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srcs = [_generate_output_file(ctx, name, ext + ".c") for name in proto_sources] |
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hdrs = [_generate_output_file(ctx, name, ext + ".h") for name in proto_sources] |
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thunks = [] |
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if generator == "upb": |
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thunks = [_generate_output_file(ctx, name, ext + ".thunks.c") for name in proto_sources] |
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transitive_sets = proto_info.transitive_descriptor_sets.to_list() |
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args = ctx.actions.args() |
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args.use_param_file(param_file_arg = "@%s") |
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args.set_param_file_format("multiline") |
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args.add("--" + generator + "_out=" + _get_real_root(ctx, srcs[0])) |
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args.add("--plugin=protoc-gen-" + generator + "=" + tool.path) |
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args.add("--descriptor_set_in=" + ctx.configuration.host_path_separator.join([f.path for f in transitive_sets])) |
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args.add_all(proto_sources, map_each = _get_real_short_path) |
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ctx.actions.run( |
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inputs = depset( |
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direct = [proto_info.direct_descriptor_set], |
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transitive = [proto_info.transitive_descriptor_sets], |
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), |
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tools = [tool], |
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outputs = srcs + hdrs, |
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executable = ctx.executable._protoc, |
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arguments = [args], |
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progress_message = "Generating upb protos for :" + ctx.label.name, |
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mnemonic = "GenUpbProtos", |
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) |
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if generator == "upb": |
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ctx.actions.run_shell( |
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inputs = hdrs, |
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outputs = thunks, |
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command = " && ".join([ |
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"sed 's/UPB_INLINE //' {} > {}".format(hdr.path, thunk.path) |
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for (hdr, thunk) in zip(hdrs, thunks) |
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]), |
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progress_message = "Generating thunks for upb protos API for: " + ctx.label.name, |
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mnemonic = "GenUpbProtosThunks", |
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) |
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return GeneratedSrcsInfo( |
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srcs = srcs, |
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hdrs = hdrs, |
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thunks = thunks, |
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includes = [_generate_include_path(proto_sources[0], hdrs[0], ext + ".h")], |
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) |
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def _upb_proto_rule_impl(ctx): |
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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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if _WrappedDefsGeneratedSrcsInfo in dep: |
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srcs = dep[_WrappedDefsGeneratedSrcsInfo].srcs |
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elif _UpbWrappedGeneratedSrcsInfo in dep: |
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srcs = dep[_UpbWrappedGeneratedSrcsInfo].srcs |
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else: |
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fail("proto_library rule must generate _UpbWrappedGeneratedSrcsInfo or " + |
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"_WrappedDefsGeneratedSrcsInfo (aspect should have handled this).") |
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if _UpbDefsWrappedCcInfo in dep: |
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cc_info = dep[_UpbDefsWrappedCcInfo].cc_info |
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elif UpbWrappedCcInfo in dep: |
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cc_info = dep[UpbWrappedCcInfo].cc_info |
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else: |
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fail("proto_library rule must generate UpbWrappedCcInfo or " + |
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"_UpbDefsWrappedCcInfo (aspect should have handled this).") |
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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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def _generate_name(ctx, generator, thunks = False): |
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if thunks: |
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return ctx.rule.attr.name + "." + generator + ".thunks" |
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return ctx.rule.attr.name + "." + generator |
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def _get_dep_cc_infos(target, ctx, generator): |
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aspect_deps = getattr(ctx.attr, "_" + generator) |
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rule_deps = ctx.rule.attr.deps |
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dep_ccinfos = [dep[CcInfo] for dep in aspect_deps] |
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if generator == "upbdefs": |
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dep_ccinfos += [dep[_UpbDefsWrappedCcInfo].cc_info for dep in rule_deps] |
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dep_ccinfos.append(target[UpbWrappedCcInfo].cc_info) |
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else: |
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dep_ccinfos += [dep[UpbWrappedCcInfo].cc_info for dep in rule_deps] |
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return dep_ccinfos |
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def _compile_upb_protos(ctx, files, generator, dep_ccinfos, cc_provider): |
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cc_info = _cc_library_func( |
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ctx = ctx, |
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name = _generate_name(ctx, generator), |
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hdrs = files.hdrs, |
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srcs = files.srcs, |
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includes = files.includes, |
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copts = ctx.attr._copts[UpbProtoLibraryCoptsInfo].copts, |
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dep_ccinfos = dep_ccinfos, |
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) |
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if files.thunks: |
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cc_info_with_thunks = _cc_library_func( |
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ctx = ctx, |
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name = _generate_name(ctx, generator, files.thunks), |
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hdrs = [], |
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srcs = files.thunks, |
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includes = files.includes, |
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copts = ctx.attr._copts[UpbProtoLibraryCoptsInfo].copts, |
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dep_ccinfos = dep_ccinfos + [cc_info], |
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) |
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return cc_provider( |
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cc_info = cc_info, |
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cc_info_with_thunks = cc_info_with_thunks, |
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) |
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else: |
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return cc_provider( |
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cc_info = cc_info, |
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) |
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def _get_hint_providers(ctx, generator): |
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if generator not in _GENERATORS: |
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fail("Please add new generator '{}' to _GENERATORS list".format(generator)) |
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possible_owners = [] |
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for generator in _GENERATORS: |
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possible_owners.append(ctx.label.relative(_generate_name(ctx, generator))) |
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possible_owners.append(ctx.label.relative(_generate_name(ctx, generator, thunks = True))) |
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if hasattr(cc_common, "CcSharedLibraryHintInfo"): |
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return [cc_common.CcSharedLibraryHintInfo(owners = possible_owners)] |
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|
elif hasattr(cc_common, "CcSharedLibraryHintInfo_6_X_constructor_do_not_use"): |
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# This branch can be deleted once 6.X is not supported by upb rules |
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|
return [cc_common.CcSharedLibraryHintInfo_6_X_constructor_do_not_use(owners = possible_owners)] |
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return [] |
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def _upb_proto_aspect_impl(target, ctx, generator, cc_provider, file_provider, provide_cc_shared_library_hints = True): |
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dep_ccinfos = _get_dep_cc_infos(target, ctx, generator) |
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if not getattr(ctx.rule.attr, "srcs", []): |
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# This target doesn't declare any sources, reexport all its deps instead. |
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# This is known as an "alias library": |
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# https://bazel.build/reference/be/protocol-buffer#proto_library.srcs |
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|
files = _merge_generated_srcs([dep[file_provider].srcs for dep in ctx.rule.attr.deps]) |
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|
wrapped_cc_info = UpbWrappedCcInfo( |
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|
cc_info = cc_common.merge_cc_infos(direct_cc_infos = dep_ccinfos), |
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) |
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else: |
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|
proto_info = target[ProtoInfo] |
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|
files = _generate_upb_protos( |
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|
ctx, |
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|
generator, |
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|
proto_info, |
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|
proto_info.direct_sources, |
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|
|
) |
|
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|
|
wrapped_cc_info = _compile_upb_protos( |
|
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|
ctx, |
|
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|
|
files, |
|
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|
generator, |
|
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|
dep_ccinfos, |
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|
|
cc_provider, |
|
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|
|
) |
|
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|
|
hints = _get_hint_providers(ctx, generator) if provide_cc_shared_library_hints else [] |
|
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|
|
|
return hints + [ |
|
|
|
|
file_provider(srcs = files), |
|
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|
|
wrapped_cc_info, |
|
|
|
|
] |
|
|
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|
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|
|
|
_GENERATORS = ["upb", "upbdefs"] |
|
|
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|
|
|
|
|
|
def upb_proto_library_aspect_impl(target, ctx): |
|
|
|
|
return _upb_proto_aspect_impl(target, ctx, "upb", UpbWrappedCcInfo, _UpbWrappedGeneratedSrcsInfo) |
|
|
|
|
|
|
|
|
|
def _upb_proto_reflection_library_aspect_impl(target, ctx): |
|
|
|
|
return _upb_proto_aspect_impl(target, ctx, "upbdefs", _UpbDefsWrappedCcInfo, _WrappedDefsGeneratedSrcsInfo, provide_cc_shared_library_hints = False) |
|
|
|
|
|
|
|
|
|
# upb_proto_library() ########################################################## |
|
|
|
|
|
|
|
|
|
def _get_upb_proto_library_aspect_provides(): |
|
|
|
|
provides = [ |
|
|
|
|
UpbWrappedCcInfo, |
|
|
|
|
_UpbWrappedGeneratedSrcsInfo, |
|
|
|
|
] |
|
|
|
|
|
|
|
|
|
if hasattr(cc_common, "CcSharedLibraryHintInfo"): |
|
|
|
|
provides.append(cc_common.CcSharedLibraryHintInfo) |
|
|
|
|
elif hasattr(cc_common, "CcSharedLibraryHintInfo_6_X_getter_do_not_use"): |
|
|
|
|
# This branch can be deleted once 6.X is not supported by upb rules |
|
|
|
|
provides.append(cc_common.CcSharedLibraryHintInfo_6_X_getter_do_not_use) |
|
|
|
|
|
|
|
|
|
return provides |
|
|
|
|
|
|
|
|
|
upb_proto_library_aspect = aspect( |
|
|
|
|
attrs = { |
|
|
|
|
"_copts": attr.label( |
|
|
|
|
default = "//upb:upb_proto_library_copts__for_generated_code_only_do_not_use", |
|
|
|
|
), |
|
|
|
|
"_gen_upb": attr.label( |
|
|
|
|
executable = True, |
|
|
|
|
cfg = "exec", |
|
|
|
|
default = "//upb/upbc:protoc-gen-upb_stage1", |
|
|
|
|
), |
|
|
|
|
"_protoc": attr.label( |
|
|
|
|
executable = True, |
|
|
|
|
cfg = "exec", |
|
|
|
|
default = "//:protoc", |
|
|
|
|
), |
|
|
|
|
"_cc_toolchain": attr.label( |
|
|
|
|
default = "@bazel_tools//tools/cpp:current_cc_toolchain", |
|
|
|
|
), |
|
|
|
|
"_upb": attr.label_list(default = [ |
|
|
|
|
"//upb:generated_code_support__only_for_generated_code_do_not_use__i_give_permission_to_break_me", |
|
|
|
|
]), |
|
|
|
|
"_fasttable_enabled": attr.label(default = "//upb:fasttable_enabled"), |
|
|
|
|
}, |
|
|
|
|
implementation = upb_proto_library_aspect_impl, |
|
|
|
|
provides = _get_upb_proto_library_aspect_provides(), |
|
|
|
|
attr_aspects = ["deps"], |
|
|
|
|
fragments = ["cpp"], |
|
|
|
|
toolchains = use_cpp_toolchain(), |
|
|
|
|
incompatible_use_toolchain_transition = True, |
|
|
|
|
load( |
|
|
|
|
"//upb/bazel:upb_proto_library_internal/aspect.bzl", |
|
|
|
|
_GeneratedSrcsInfo = "GeneratedSrcsInfo", |
|
|
|
|
) |
|
|
|
|
|
|
|
|
|
upb_proto_library = rule( |
|
|
|
|
output_to_genfiles = True, |
|
|
|
|
implementation = _upb_proto_rule_impl, |
|
|
|
|
attrs = { |
|
|
|
|
"deps": attr.label_list( |
|
|
|
|
aspects = [upb_proto_library_aspect], |
|
|
|
|
allow_rules = ["proto_library"], |
|
|
|
|
providers = [ProtoInfo], |
|
|
|
|
), |
|
|
|
|
}, |
|
|
|
|
provides = [CcInfo], |
|
|
|
|
load( |
|
|
|
|
"//upb/bazel:upb_proto_reflection_library.bzl", |
|
|
|
|
_upb_proto_reflection_library = "upb_proto_reflection_library", |
|
|
|
|
) |
|
|
|
|
|
|
|
|
|
# Temporary alias, see b/291827469. |
|
|
|
|
upb_c_proto_library = upb_proto_library |
|
|
|
|
upb_proto_library = _upb_c_proto_library |
|
|
|
|
|
|
|
|
|
# upb_proto_reflection_library() ############################################### |
|
|
|
|
|
|
|
|
|
_upb_proto_reflection_library_aspect = aspect( |
|
|
|
|
attrs = { |
|
|
|
|
"_copts": attr.label( |
|
|
|
|
default = "//upb:upb_proto_library_copts__for_generated_code_only_do_not_use", |
|
|
|
|
), |
|
|
|
|
"_gen_upbdefs": attr.label( |
|
|
|
|
executable = True, |
|
|
|
|
cfg = "exec", |
|
|
|
|
default = "//upb/upbc:protoc-gen-upbdefs", |
|
|
|
|
), |
|
|
|
|
"_protoc": attr.label( |
|
|
|
|
executable = True, |
|
|
|
|
cfg = "exec", |
|
|
|
|
default = "//:protoc", |
|
|
|
|
), |
|
|
|
|
"_cc_toolchain": attr.label( |
|
|
|
|
default = "@bazel_tools//tools/cpp:current_cc_toolchain", |
|
|
|
|
), |
|
|
|
|
"_upbdefs": attr.label_list( |
|
|
|
|
default = [ |
|
|
|
|
"//upb:generated_reflection_support__only_for_generated_code_do_not_use__i_give_permission_to_break_me", |
|
|
|
|
], |
|
|
|
|
), |
|
|
|
|
}, |
|
|
|
|
implementation = _upb_proto_reflection_library_aspect_impl, |
|
|
|
|
provides = [ |
|
|
|
|
_UpbDefsWrappedCcInfo, |
|
|
|
|
_WrappedDefsGeneratedSrcsInfo, |
|
|
|
|
], |
|
|
|
|
required_aspect_providers = [ |
|
|
|
|
UpbWrappedCcInfo, |
|
|
|
|
_UpbWrappedGeneratedSrcsInfo, |
|
|
|
|
], |
|
|
|
|
attr_aspects = ["deps"], |
|
|
|
|
fragments = ["cpp"], |
|
|
|
|
toolchains = use_cpp_toolchain(), |
|
|
|
|
incompatible_use_toolchain_transition = True, |
|
|
|
|
) |
|
|
|
|
|
|
|
|
|
upb_proto_reflection_library = rule( |
|
|
|
|
output_to_genfiles = True, |
|
|
|
|
implementation = _upb_proto_rule_impl, |
|
|
|
|
attrs = { |
|
|
|
|
"deps": attr.label_list( |
|
|
|
|
aspects = [ |
|
|
|
|
upb_proto_library_aspect, |
|
|
|
|
_upb_proto_reflection_library_aspect, |
|
|
|
|
], |
|
|
|
|
allow_rules = ["proto_library"], |
|
|
|
|
providers = [ProtoInfo], |
|
|
|
|
), |
|
|
|
|
}, |
|
|
|
|
provides = [CcInfo], |
|
|
|
|
) |
|
|
|
|
upb_c_proto_library = _upb_c_proto_library |
|
|
|
|
upb_proto_reflection_library = _upb_proto_reflection_library |
|
|
|
|
GeneratedSrcsInfo = _GeneratedSrcsInfo |
|
|
|
|
UpbWrappedCcInfo = _UpbWrappedCcInfo |
|
|
|
|
upb_proto_library_aspect = _upb_c_proto_library_aspect |
|
|
|
|
|
Joshua Haberman
1 year ago
committed by
Copybara-Service