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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 <cstddef>
#include <string>
#include <utility>
#include "absl/base/attributes.h"
#include "absl/base/nullability.h"
#include "absl/log/absl_check.h"
#include "absl/status/status.h"
#include "absl/status/statusor.h"
#include "absl/strings/str_cat.h"
#include "absl/types/optional.h"
#include "common/native_type.h"
#include "common/optional_ref.h"
#include "common/value.h"
#include "common/value_kind.h"
#include "common/values/value_variant.h"
#include "internal/status_macros.h"
#include "google/protobuf/arena.h"
#include "google/protobuf/descriptor.h"
#include "google/protobuf/io/zero_copy_stream.h"
#include "google/protobuf/message.h"
namespace cel {
namespace {
absl::Status InvalidMapKeyTypeError(ValueKind kind) {
return absl::InvalidArgumentError(
absl::StrCat("Invalid map key type: '", ValueKindToString(kind), "'"));
}
} // namespace
NativeTypeId MapValue::GetTypeId() const {
return variant_.Visit([](const auto& alternative) -> NativeTypeId {
return NativeTypeId::Of(alternative);
});
}
std::string MapValue::DebugString() const {
return variant_.Visit([](const auto& alternative) -> std::string {
return alternative.DebugString();
});
}
absl::Status MapValue::SerializeTo(
const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool,
google::protobuf::MessageFactory* absl_nonnull message_factory,
google::protobuf::io::ZeroCopyOutputStream* absl_nonnull output) const {
ABSL_DCHECK(descriptor_pool != nullptr);
ABSL_DCHECK(message_factory != nullptr);
ABSL_DCHECK(output != nullptr);
return variant_.Visit([&](const auto& alternative) -> absl::Status {
return alternative.SerializeTo(descriptor_pool, message_factory, output);
});
}
absl::Status MapValue::ConvertToJson(
const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool,
google::protobuf::MessageFactory* absl_nonnull message_factory,
google::protobuf::Message* absl_nonnull json) const {
ABSL_DCHECK(descriptor_pool != nullptr);
ABSL_DCHECK(message_factory != nullptr);
ABSL_DCHECK(json != nullptr);
ABSL_DCHECK_EQ(json->GetDescriptor()->well_known_type(),
google::protobuf::Descriptor::WELLKNOWNTYPE_VALUE);
return variant_.Visit([&](const auto& alternative) -> absl::Status {
return alternative.ConvertToJson(descriptor_pool, message_factory, json);
});
}
absl::Status MapValue::ConvertToJsonObject(
const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool,
google::protobuf::MessageFactory* absl_nonnull message_factory,
google::protobuf::Message* absl_nonnull json) const {
ABSL_DCHECK(descriptor_pool != nullptr);
ABSL_DCHECK(message_factory != nullptr);
ABSL_DCHECK(json != nullptr);
ABSL_DCHECK_EQ(json->GetDescriptor()->well_known_type(),
google::protobuf::Descriptor::WELLKNOWNTYPE_STRUCT);
return variant_.Visit([&](const auto& alternative) -> absl::Status {
return alternative.ConvertToJsonObject(descriptor_pool, message_factory,
json);
});
}
absl::Status MapValue::Equal(
const Value& other,
const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool,
google::protobuf::MessageFactory* absl_nonnull message_factory,
google::protobuf::Arena* absl_nonnull arena, Value* absl_nonnull result) const {
ABSL_DCHECK(descriptor_pool != nullptr);
ABSL_DCHECK(message_factory != nullptr);
ABSL_DCHECK(arena != nullptr);
ABSL_DCHECK(result != nullptr);
return variant_.Visit([&](const auto& alternative) -> absl::Status {
return alternative.Equal(other, descriptor_pool, message_factory, arena,
result);
});
}
bool MapValue::IsZeroValue() const {
return variant_.Visit([](const auto& alternative) -> bool {
return alternative.IsZeroValue();
});
}
absl::StatusOr<bool> MapValue::IsEmpty() const {
return variant_.Visit([](const auto& alternative) -> absl::StatusOr<bool> {
return alternative.IsEmpty();
});
}
absl::StatusOr<size_t> MapValue::Size() const {
return variant_.Visit([](const auto& alternative) -> absl::StatusOr<size_t> {
return alternative.Size();
});
}
absl::Status MapValue::Get(
const Value& key,
const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool,
google::protobuf::MessageFactory* absl_nonnull message_factory,
google::protobuf::Arena* absl_nonnull arena, Value* absl_nonnull result) const {
ABSL_DCHECK(descriptor_pool != nullptr);
ABSL_DCHECK(message_factory != nullptr);
ABSL_DCHECK(arena != nullptr);
ABSL_DCHECK(result != nullptr);
return variant_.Visit([&](const auto& alternative) -> absl::Status {
return alternative.Get(key, descriptor_pool, message_factory, arena,
result);
});
}
absl::StatusOr<bool> MapValue::Find(
const Value& key,
const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool,
google::protobuf::MessageFactory* absl_nonnull message_factory,
google::protobuf::Arena* absl_nonnull arena, Value* absl_nonnull result) const {
ABSL_DCHECK(descriptor_pool != nullptr);
ABSL_DCHECK(message_factory != nullptr);
ABSL_DCHECK(arena != nullptr);
ABSL_DCHECK(result != nullptr);
return variant_.Visit([&](const auto& alternative) -> absl::StatusOr<bool> {
return alternative.Find(key, descriptor_pool, message_factory, arena,
result);
});
}
absl::Status MapValue::Has(
const Value& key,
const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool,
google::protobuf::MessageFactory* absl_nonnull message_factory,
google::protobuf::Arena* absl_nonnull arena, Value* absl_nonnull result) const {
ABSL_DCHECK(descriptor_pool != nullptr);
ABSL_DCHECK(message_factory != nullptr);
ABSL_DCHECK(arena != nullptr);
ABSL_DCHECK(result != nullptr);
return variant_.Visit([&](const auto& alternative) -> absl::Status {
return alternative.Has(key, descriptor_pool, message_factory, arena,
result);
});
}
absl::Status MapValue::ListKeys(
const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool,
google::protobuf::MessageFactory* absl_nonnull message_factory,
google::protobuf::Arena* absl_nonnull arena, ListValue* absl_nonnull result) const {
ABSL_DCHECK(descriptor_pool != nullptr);
ABSL_DCHECK(message_factory != nullptr);
ABSL_DCHECK(arena != nullptr);
ABSL_DCHECK(result != nullptr);
return variant_.Visit([&](const auto& alternative) -> absl::Status {
return alternative.ListKeys(descriptor_pool, message_factory, arena,
result);
});
}
absl::Status MapValue::ForEach(
ForEachCallback callback,
const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool,
google::protobuf::MessageFactory* absl_nonnull message_factory,
google::protobuf::Arena* absl_nonnull arena) const {
ABSL_DCHECK(descriptor_pool != nullptr);
ABSL_DCHECK(message_factory != nullptr);
ABSL_DCHECK(arena != nullptr);
return variant_.Visit([&](const auto& alternative) -> absl::Status {
return alternative.ForEach(callback, descriptor_pool, message_factory,
arena);
});
}
absl::StatusOr<absl_nonnull ValueIteratorPtr> MapValue::NewIterator() const {
return variant_.Visit([](const auto& alternative)
-> absl::StatusOr<absl_nonnull ValueIteratorPtr> {
return alternative.NewIterator();
});
}
namespace common_internal {
absl::Status MapValueEqual(
const MapValue& lhs, const MapValue& rhs,
const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool,
google::protobuf::MessageFactory* absl_nonnull message_factory,
google::protobuf::Arena* absl_nonnull arena, Value* absl_nonnull result) {
ABSL_DCHECK(descriptor_pool != nullptr);
ABSL_DCHECK(message_factory != nullptr);
ABSL_DCHECK(arena != nullptr);
ABSL_DCHECK(result != nullptr);
CEL_ASSIGN_OR_RETURN(auto lhs_size, lhs.Size());
CEL_ASSIGN_OR_RETURN(auto rhs_size, rhs.Size());
if (lhs_size != rhs_size) {
*result = FalseValue();
return absl::OkStatus();
}
CEL_ASSIGN_OR_RETURN(auto lhs_iterator, lhs.NewIterator());
Value lhs_key;
Value lhs_value;
Value rhs_value;
for (size_t index = 0; index < lhs_size; ++index) {
ABSL_CHECK(lhs_iterator->HasNext()); // Crash OK
CEL_RETURN_IF_ERROR(
lhs_iterator->Next(descriptor_pool, message_factory, arena, &lhs_key));
bool rhs_value_found;
CEL_ASSIGN_OR_RETURN(
rhs_value_found,
rhs.Find(lhs_key, descriptor_pool, message_factory, arena, &rhs_value));
if (!rhs_value_found) {
*result = FalseValue();
return absl::OkStatus();
}
CEL_RETURN_IF_ERROR(
lhs.Get(lhs_key, descriptor_pool, message_factory, arena, &lhs_value));
CEL_RETURN_IF_ERROR(lhs_value.Equal(rhs_value, descriptor_pool,
message_factory, arena, result));
if (result->IsFalse()) {
return absl::OkStatus();
}
}
ABSL_DCHECK(!lhs_iterator->HasNext());
*result = TrueValue();
return absl::OkStatus();
}
absl::Status MapValueEqual(
const CustomMapValueInterface& lhs, const MapValue& rhs,
const google::protobuf::DescriptorPool* absl_nonnull descriptor_pool,
google::protobuf::MessageFactory* absl_nonnull message_factory,
google::protobuf::Arena* absl_nonnull arena, Value* absl_nonnull result) {
ABSL_DCHECK(descriptor_pool != nullptr);
ABSL_DCHECK(message_factory != nullptr);
ABSL_DCHECK(arena != nullptr);
ABSL_DCHECK(result != nullptr);
auto lhs_size = lhs.Size();
CEL_ASSIGN_OR_RETURN(auto rhs_size, rhs.Size());
if (lhs_size != rhs_size) {
*result = FalseValue();
return absl::OkStatus();
}
CEL_ASSIGN_OR_RETURN(auto lhs_iterator, lhs.NewIterator());
Value lhs_key;
Value lhs_value;
Value rhs_value;
for (size_t index = 0; index < lhs_size; ++index) {
ABSL_CHECK(lhs_iterator->HasNext()); // Crash OK
CEL_RETURN_IF_ERROR(
lhs_iterator->Next(descriptor_pool, message_factory, arena, &lhs_key));
bool rhs_value_found;
CEL_ASSIGN_OR_RETURN(
rhs_value_found,
rhs.Find(lhs_key, descriptor_pool, message_factory, arena, &rhs_value));
if (!rhs_value_found) {
*result = FalseValue();
return absl::OkStatus();
}
CEL_RETURN_IF_ERROR(
CustomMapValue(&lhs, arena)
.Get(lhs_key, descriptor_pool, message_factory, arena, &lhs_value));
CEL_RETURN_IF_ERROR(lhs_value.Equal(rhs_value, descriptor_pool,
message_factory, arena, result));
if (result->IsFalse()) {
return absl::OkStatus();
}
}
ABSL_DCHECK(!lhs_iterator->HasNext());
*result = TrueValue();
return absl::OkStatus();
}
} // namespace common_internal
absl::Status CheckMapKey(const Value& key) {
switch (key.kind()) {
case ValueKind::kBool:
ABSL_FALLTHROUGH_INTENDED;
case ValueKind::kInt:
ABSL_FALLTHROUGH_INTENDED;
case ValueKind::kUint:
ABSL_FALLTHROUGH_INTENDED;
case ValueKind::kString:
return absl::OkStatus();
case ValueKind::kError:
return key.GetError().NativeValue();
default:
return InvalidMapKeyTypeError(key.kind());
}
}
optional_ref<const CustomMapValue> MapValue::AsCustom() const& {
if (const auto* alternative = variant_.As<CustomMapValue>();
alternative != nullptr) {
return *alternative;
}
return absl::nullopt;
}
absl::optional<CustomMapValue> MapValue::AsCustom() && {
if (auto* alternative = variant_.As<CustomMapValue>();
alternative != nullptr) {
return std::move(*alternative);
}
return absl::nullopt;
}
const CustomMapValue& MapValue::GetCustom() const& {
ABSL_DCHECK(IsCustom());
return variant_.Get<CustomMapValue>();
}
CustomMapValue MapValue::GetCustom() && {
ABSL_DCHECK(IsCustom());
return std::move(variant_).Get<CustomMapValue>();
}
common_internal::ValueVariant MapValue::ToValueVariant() const& {
return variant_.Visit(
[](const auto& alternative) -> common_internal::ValueVariant {
return common_internal::ValueVariant(alternative);
});
}
common_internal::ValueVariant MapValue::ToValueVariant() && {
return std::move(variant_).Visit(
[](auto&& alternative) -> common_internal::ValueVariant {
// NOLINTNEXTLINE(bugprone-move-forwarding-reference)
return common_internal::ValueVariant(std::move(alternative));
});
}
} // namespace cel