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// Copyright 2023 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 "extensions/protobuf/enum_value.h"
#include <limits>
#include "absl/base/macros.h"
#include "absl/base/optimization.h"
#include "absl/types/optional.h"
#include "extensions/protobuf/enum_type.h"
namespace cel::extensions {
const google::protobuf::EnumValueDescriptor* ProtoEnumValue::descriptor(
const EnumValue& value) {
ABSL_ASSERT(Is(value));
auto number = value.number();
if (ABSL_PREDICT_FALSE(number < std::numeric_limits<int>::min() ||
number > std::numeric_limits<int>::max())) {
return nullptr;
}
return value.type().As<ProtoEnumType>()->descriptor().FindValueByNumber(
static_cast<int>(number));
}
absl::optional<int> ProtoEnumValue::value_impl(
const ProtoEnumType& type, int64_t number,
const google::protobuf::EnumDescriptor* desc) {
if (ABSL_PREDICT_FALSE(desc == nullptr)) {
return absl::nullopt;
}
if (ABSL_PREDICT_FALSE(number < std::numeric_limits<int>::min() ||
number > std::numeric_limits<int>::max())) {
return absl::nullopt;
}
if (&type.descriptor() != desc) {
return absl::nullopt;
}
if (desc->FindValueByNumber(static_cast<int>(number)) == nullptr) {
return absl::nullopt;
}
return static_cast<int>(number);
}
} // namespace cel::extensions