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[cel-types] Add YAML encoding and decoding for CEL TypeDef and aspects. #2330

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[cel-types] Add YAML encoding and decoding for CEL TypeDef and aspects. #2330

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322 changes: 322 additions & 0 deletions common/typedef/BUILD
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# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

load("@com_google_protobuf//bazel:cc_proto_library.bzl", "cc_proto_library")
load("@com_google_protobuf//bazel:proto_library.bzl", "proto_library")
load("@rules_cc//cc:cc_library.bzl", "cc_library")
load("@rules_cc//cc:cc_test.bzl", "cc_test")

package(default_visibility = ["//visibility:public"])

licenses(["notice"])

cc_library(
name = "typedef",
srcs = ["typedef.cc"],
hdrs = ["typedef.h"],
deps = [
"//common:ast",
"//common:constant",
"@com_google_absl//absl/base:core_headers",
"@com_google_absl//absl/base:nullability",
"@com_google_absl//absl/container:flat_hash_map",
"@com_google_absl//absl/functional:overload",
"@com_google_absl//absl/log:absl_check",
"@com_google_absl//absl/status",
"@com_google_absl//absl/strings",
"@com_google_absl//absl/strings:string_view",
],
)

cc_test(
name = "typedef_test",
srcs = ["typedef_test.cc"],
deps = [
":typedef",
"//common:ast",
"//common:constant",
"//internal:testing",
"@com_google_absl//absl/status",
"@com_google_absl//absl/status:status_matchers",
],
)

proto_library(
name = "typedef_protos",
srcs = ["typedef.proto"],
deps = [
"@com_google_cel_spec//proto/cel/expr:checked_proto",
"@com_google_cel_spec//proto/cel/expr:syntax_proto",
],
)

cc_proto_library(
name = "typedef_cc_proto",
deps = [":typedef_protos"],
)

cc_library(
name = "aspect_proto",
srcs = ["aspect_proto.cc"],
hdrs = ["aspect_proto.h"],
deps = [
":typedef_cc_proto",
"@com_google_absl//absl/base:core_headers",
"@com_google_absl//absl/base:nullability",
"@com_google_absl//absl/container:flat_hash_map",
"@com_google_absl//absl/status",
"@com_google_absl//absl/status:statusor",
"@com_google_absl//absl/strings",
"@com_google_absl//absl/strings:string_view",
],
)

cc_test(
name = "aspect_proto_test",
srcs = ["aspect_proto_test.cc"],
deps = [
":aspect_proto",
":typedef_cc_proto",
"//internal:testing",
"@com_google_absl//absl/status",
"@com_google_absl//absl/status:status_matchers",
"@com_google_absl//absl/strings:string_view",
],
)

cc_library(
name = "typedef_proto",
srcs = ["typedef_proto.cc"],
hdrs = ["typedef_proto.h"],
deps = [
":aspect_proto",
":typedef",
":typedef_cc_proto",
"//common:ast",
"//common:constant",
"//common/ast:constant_proto",
"//internal:status_macros",
"@com_google_absl//absl/base:nullability",
"@com_google_absl//absl/container:flat_hash_map",
"@com_google_absl//absl/status",
"@com_google_absl//absl/status:statusor",
"@com_google_absl//absl/types:span",
"@com_google_absl//absl/types:variant",
"@com_google_cel_spec//proto/cel/expr:checked_cc_proto",
"@com_google_protobuf//:struct_cc_proto",
],
)

cc_library(
name = "proto_schema",
hdrs = ["proto_schema.h"],
deps = [
"@com_google_absl//absl/base:core_headers",
"@com_google_absl//absl/strings:string_view",
],
)

proto_library(
name = "proto_schema_protos",
srcs = ["proto_schema.proto"],
deps = [":typedef_protos"],
)

cc_proto_library(
name = "proto_schema_cc_proto",
deps = [":proto_schema_protos"],
)

cc_library(
name = "proto_schema_proto",
srcs = ["proto_schema_proto.cc"],
hdrs = ["proto_schema_proto.h"],
deps = [
":aspect_proto",
":proto_schema",
":proto_schema_cc_proto",
":typedef_cc_proto",
"@com_google_absl//absl/base:nullability",
"@com_google_absl//absl/status",
"@com_google_absl//absl/status:statusor",
"@com_google_absl//absl/strings",
"@com_google_absl//absl/strings:string_view",
],
)

cc_test(
name = "proto_schema_proto_test",
srcs = ["proto_schema_proto_test.cc"],
deps = [
":aspect_proto",
":proto_schema",
":proto_schema_cc_proto",
":proto_schema_proto",
":typedef_cc_proto",
"//internal:testing",
"@com_google_absl//absl/status",
"@com_google_absl//absl/status:status_matchers",
"@com_google_protobuf//:protobuf",
],
)

cc_test(
name = "typedef_proto_test",
srcs = ["typedef_proto_test.cc"],
data = [
"//common/typedef/testdata:typedef_testdata",
],
deps = [
":aspect_proto",
":proto_schema_proto",
":typedef",
":typedef_cc_proto",
":typedef_proto",
"//internal:proto_matchers",
"//internal:runfiles",
"//internal:testing",
"@com_google_absl//absl/status",
"@com_google_absl//absl/status:status_matchers",
"@com_google_absl//absl/status:statusor",
"@com_google_absl//absl/strings",
"@com_google_absl//absl/strings:string_view",
"@com_google_protobuf//:protobuf",
],
)

# NOTE: The YAML targets below depend on yaml-cpp (//third_party/yamlcpp),
# which is used for open-source CEL compatibility (and therefore cannot be
# trivially migrated to Crubit/Rust YAML parsers) and requires C++ exceptions.
# The implementation using //third_party/yamlcpp carefully catches and handles
# exceptions, so code using these targets does not need the -fexceptions flag.

cc_library(
name = "yaml_helpers",
srcs = ["yaml_helpers.cc"],
hdrs = ["yaml_helpers.h"],
copts = ["-fexceptions"],
features = ["-use_header_modules"],
deps = [
"@com_google_absl//absl/status",
"@com_google_absl//absl/status:statusor",
"@com_google_absl//absl/strings",
"@com_google_absl//absl/strings:string_view",
"@yaml-cpp",
],
)

cc_library(
name = "aspect_yaml",
srcs = ["aspect_yaml.cc"],
hdrs = ["aspect_yaml.h"],
copts = ["-fexceptions"],
features = ["-use_header_modules"],
deps = [
":yaml_helpers",
"@com_google_absl//absl/base:core_headers",
"@com_google_absl//absl/base:nullability",
"@com_google_absl//absl/container:flat_hash_map",
"@com_google_absl//absl/status",
"@com_google_absl//absl/status:statusor",
"@com_google_absl//absl/strings",
"@com_google_absl//absl/strings:string_view",
],
)

cc_test(
name = "aspect_yaml_test",
srcs = ["aspect_yaml_test.cc"],
copts = ["-fexceptions"],
features = ["-use_header_modules"],
deps = [
":aspect_yaml",
"//internal:testing",
"@com_google_absl//absl/status",
"@com_google_absl//absl/status:status_matchers",
"@com_google_absl//absl/strings:string_view",
"@yaml-cpp",
],
)

cc_library(
name = "typedef_yaml",
srcs = ["typedef_yaml.cc"],
hdrs = [
"typedef_yaml.h",
],
copts = ["-fexceptions"],
features = ["-use_header_modules"],
deps = [
":aspect_yaml",
":typedef",
":yaml_helpers",
"//common:ast",
"//common:constant",
"//common:signature",
"//internal:status_macros",
"//internal:strings",
"@com_google_absl//absl/algorithm:container",
"@com_google_absl//absl/base:nullability",
"@com_google_absl//absl/container:flat_hash_map",
"@com_google_absl//absl/status",
"@com_google_absl//absl/status:statusor",
"@com_google_absl//absl/strings",
"@com_google_absl//absl/strings:str_format",
"@com_google_absl//absl/strings:string_view",
"@com_google_absl//absl/time",
"@yaml-cpp",
],
)

cc_test(
name = "typedef_yaml_test",
srcs = ["typedef_yaml_test.cc"],
copts = ["-fexceptions"],
data = [
"//common/typedef/testdata:typedef_testdata",
],
features = ["-use_header_modules"],
deps = [
":aspect_yaml",
":typedef",
":typedef_cc_proto",
":typedef_proto",
":typedef_yaml",
":yaml_helpers",
":yaml_test_helpers",
"//internal:proto_matchers",
"//internal:runfiles",
"//internal:status_macros",
"//internal:testing",
"@com_google_absl//absl/log:absl_log",
"@com_google_absl//absl/status",
"@com_google_absl//absl/status:status_matchers",
"@com_google_absl//absl/status:statusor",
"@com_google_absl//absl/strings",
"@com_google_absl//absl/strings:string_view",
"@com_google_protobuf//:protobuf",
"@yaml-cpp",
],
)

cc_library(
name = "yaml_test_helpers",
testonly = True,
srcs = ["yaml_test_helpers.cc"],
hdrs = ["yaml_test_helpers.h"],
deps = [
"@com_google_absl//absl/strings",
"@com_google_absl//absl/strings:string_view",
],
)
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