Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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49 lines
1.7 KiB
49 lines
1.7 KiB
# Protocol Buffers - Google's data interchange format |
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# Copyright 2024 Google Inc. All rights reserved. |
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# |
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# Use of this source code is governed by a BSD-style |
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# license that can be found in the LICENSE file or at |
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# https://developers.google.com/open-source/licenses/bsd |
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# |
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""" |
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Toolchain helpers. |
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The helpers here should be used for a migration to toolchain in proto rules. |
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Anybody that needs them in another repository should copy them, because after |
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the migration is finished, the helpers can be removed. |
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""" |
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load("//bazel/common:proto_lang_toolchain_info.bzl", "ProtoLangToolchainInfo") |
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load("//bazel/private:native.bzl", "native_proto_common") |
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_incompatible_toolchain_resolution = getattr(native_proto_common, "INCOMPATIBLE_ENABLE_PROTO_TOOLCHAIN_RESOLUTION", False) |
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def _find_toolchain(ctx, legacy_attr, toolchain_type): |
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if _incompatible_toolchain_resolution: |
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toolchain = ctx.toolchains[toolchain_type] |
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if not toolchain: |
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fail("No toolchains registered for '%s'." % toolchain_type) |
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return toolchain.proto |
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else: |
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return getattr(ctx.attr, legacy_attr)[ProtoLangToolchainInfo] |
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def _use_toolchain(toolchain_type): |
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if _incompatible_toolchain_resolution: |
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return [config_common.toolchain_type(toolchain_type, mandatory = False)] |
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else: |
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return [] |
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def _if_legacy_toolchain(legacy_attr_dict): |
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if _incompatible_toolchain_resolution: |
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return {} |
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else: |
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return legacy_attr_dict |
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toolchains = struct( |
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use_toolchain = _use_toolchain, |
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find_toolchain = _find_toolchain, |
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if_legacy_toolchain = _if_legacy_toolchain, |
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INCOMPATIBLE_ENABLE_PROTO_TOOLCHAIN_RESOLUTION = _incompatible_toolchain_resolution, |
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PROTO_TOOLCHAIN = Label("//bazel/private:proto_toolchain_type"), |
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)
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