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79 lines (61 loc) · 2.46 KB
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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.
// IWYU pragma: private, include "common/type.h"
// IWYU pragma: friend "common/type.h"
#ifndef THIRD_PARTY_CEL_CPP_COMMON_TYPES_BYTES_WRAPPER_TYPE_H_
#define THIRD_PARTY_CEL_CPP_COMMON_TYPES_BYTES_WRAPPER_TYPE_H_
#include <ostream>
#include <string>
#include <utility>
#include "absl/strings/string_view.h"
#include "common/type_kind.h"
namespace cel {
class Type;
class TypeParameters;
// `BytesWrapperType` is a special type which has no direct value
// representation. It is used to represent `google.protobuf.BytesValue`, which
// never exists at runtime as a value. Its primary usage is for type checking
// and unpacking at runtime.
class BytesWrapperType final {
public:
static constexpr TypeKind kKind = TypeKind::kBytesWrapper;
static constexpr absl::string_view kName = "google.protobuf.BytesValue";
BytesWrapperType() = default;
BytesWrapperType(const BytesWrapperType&) = default;
BytesWrapperType(BytesWrapperType&&) = default;
BytesWrapperType& operator=(const BytesWrapperType&) = default;
BytesWrapperType& operator=(BytesWrapperType&&) = default;
static TypeKind kind() { return kKind; }
static absl::string_view name() { return kName; }
static TypeParameters GetParameters();
static std::string DebugString() { return std::string(name()); }
};
inline constexpr bool operator==(BytesWrapperType, BytesWrapperType) {
return true;
}
inline constexpr bool operator!=(BytesWrapperType lhs, BytesWrapperType rhs) {
return !operator==(lhs, rhs);
}
template <typename H>
H AbslHashValue(H state, BytesWrapperType) {
// BytesWrapperType is really a singleton and all instances are equal. Nothing
// to hash.
return std::move(state);
}
inline std::ostream& operator<<(std::ostream& out,
const BytesWrapperType& type) {
return out << type.DebugString();
}
} // namespace cel
#endif // THIRD_PARTY_CEL_CPP_COMMON_TYPES_BYTES_WRAPPER_TYPE_H_