| """proto_lang_toolchain rule""" |
| |
| load("@proto_bazel_features//:features.bzl", "bazel_features") |
| load("//bazel/common:proto_common.bzl", "proto_common") |
| load("//bazel/private:proto_lang_toolchain_rule.bzl", _proto_lang_toolchain_rule = "proto_lang_toolchain") |
| |
| def proto_lang_toolchain(*, name, toolchain_type = None, exec_compatible_with = [], target_compatible_with = [], **attrs): |
| """Creates a proto_lang_toolchain and corresponding toolchain target. |
| |
| Toolchain target is only created when toolchain_type is set. |
| |
| https://docs.bazel.build/versions/master/be/protocol-buffer.html#proto_lang_toolchain |
| |
| Args: |
| |
| name: name of the toolchain |
| toolchain_type: The toolchain type |
| exec_compatible_with: ([constraints]) List of constraints the prebuild binaries is compatible with. |
| target_compatible_with: ([constraints]) List of constraints the target libraries are compatible with. |
| **attrs: Rule attributes |
| """ |
| |
| if getattr(proto_common, "INCOMPATIBLE_PASS_TOOLCHAIN_TYPE", False): |
| attrs["toolchain_type"] = toolchain_type |
| |
| # This condition causes Starlark rules to be used only on Bazel >=7.0.0 |
| if bazel_features.proto.starlark_proto_info: |
| _proto_lang_toolchain_rule(name = name, **attrs) |
| else: |
| # On older Bazel versions keep using native rules, so that mismatch in ProtoInfo doesn't happen |
| native.proto_lang_toolchain(name = name, **attrs) |
| |
| if toolchain_type: |
| native.toolchain( |
| name = name + "_toolchain", |
| toolchain_type = toolchain_type, |
| exec_compatible_with = exec_compatible_with, |
| target_compatible_with = target_compatible_with, |
| toolchain = name, |
| ) |