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// Copyright 2025 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.
#include "absl/status/status.h"
#include "absl/strings/str_cat.h"
#include "checker/optional.h"
#include "compiler/compiler.h"
#include "compiler/optional.h"
#include "runtime/optional_types.h"
#include "runtime/runtime_builder.h"
#include "runtime/runtime_options.h"
#include "cel_expr_python/cel_extension.h"
#include "cel_expr_python/py_error_status.h"
namespace cel_python {
class ExtOptional : public CelExtension {
public:
explicit ExtOptional(int version) : CelExtension("optional", "", version) {
if (version < 0 || version > cel::kOptionalExtensionLatestVersion) {
throw StatusToException(absl::InvalidArgumentError(absl::StrCat(
"'optional' extension version: ", version, " not in range [0, ",
cel::kOptionalExtensionLatestVersion, "]")));
}
}
ExtOptional() : ExtOptional(cel::kOptionalExtensionLatestVersion) {}
cel::CompilerLibrary GetCompilerLibrary() override {
return cel::OptionalCompilerLibrary(version());
}
absl::Status ConfigureRuntime(cel::RuntimeBuilder& runtime_builder,
const cel::RuntimeOptions& opts) override {
absl::Status status = cel::extensions::EnableOptionalTypes(runtime_builder);
if (!status.ok() && status.code() != absl::StatusCode::kAlreadyExists) {
return status;
}
return absl::OkStatus();
}
};
CEL_VERSIONED_EXTENSION_MODULE(ext_optional, ExtOptional);
} // namespace cel_python