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Diffstat (limited to 'third_party/protobuf/src/google/protobuf/map_entry.h')
| -rw-r--r-- | third_party/protobuf/src/google/protobuf/map_entry.h | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/third_party/protobuf/src/google/protobuf/map_entry.h b/third_party/protobuf/src/google/protobuf/map_entry.h new file mode 100644 index 0000000000..d7db9b0f72 --- /dev/null +++ b/third_party/protobuf/src/google/protobuf/map_entry.h @@ -0,0 +1,319 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// https://developers.google.com/protocol-buffers/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#ifndef GOOGLE_PROTOBUF_MAP_ENTRY_H__ +#define GOOGLE_PROTOBUF_MAP_ENTRY_H__ + +#include <google/protobuf/generated_message_reflection.h> +#include <google/protobuf/map_entry_lite.h> +#include <google/protobuf/map_type_handler.h> +#include <google/protobuf/metadata.h> +#include <google/protobuf/reflection_ops.h> +#include <google/protobuf/unknown_field_set.h> +#include <google/protobuf/wire_format_lite_inl.h> + +namespace google { +namespace protobuf { +class Arena; +namespace internal { +template <typename Key, typename Value, + WireFormatLite::FieldType kKeyFieldType, + WireFormatLite::FieldType kValueFieldType, + int default_enum_value> +class MapField; +} +} + +namespace protobuf { +namespace internal { + +// Register all MapEntry default instances so we can delete them in +// ShutdownProtobufLibrary(). +void LIBPROTOBUF_EXPORT RegisterMapEntryDefaultInstance( + MessageLite* default_instance); + +// This is the common base class for MapEntry. It is used by MapFieldBase in +// reflection api, in which the static type of key and value is unknown. +class LIBPROTOBUF_EXPORT MapEntryBase : public Message { + public: + ::google::protobuf::Metadata GetMetadata() const { + ::google::protobuf::Metadata metadata; + metadata.descriptor = descriptor_; + metadata.reflection = reflection_; + return metadata; + } + + protected: + MapEntryBase() : descriptor_(NULL), reflection_(NULL) { } + virtual ~MapEntryBase() {} + + const Descriptor* descriptor_; + const Reflection* reflection_; +}; + +// MapEntry is the returned google::protobuf::Message when calling AddMessage of +// google::protobuf::Reflection. In order to let it work with generated message +// reflection, its in-memory type is the same as generated message with the same +// fields. However, in order to decide the in-memory type of key/value, we need +// to know both their cpp type in generated api and proto type. In +// implementation, all in-memory types have related wire format functions to +// support except ArenaStringPtr. Therefore, we need to define another type with +// supporting wire format functions. Since this type is only used as return type +// of MapEntry accessors, it's named MapEntry accessor type. +// +// cpp type: the type visible to users in public API. +// proto type: WireFormatLite::FieldType of the field. +// in-memory type: type of the data member used to stored this field. +// MapEntry accessor type: type used in MapEntry getters/mutators to access the +// field. +// +// cpp type | proto type | in-memory type | MapEntry accessor type +// int32 TYPE_INT32 int32 int32 +// int32 TYPE_FIXED32 int32 int32 +// string TYPE_STRING ArenaStringPtr string +// FooEnum TYPE_ENUM int int +// FooMessage TYPE_MESSAGE FooMessage* FooMessage +// +// The in-memory types of primitive types can be inferred from its proto type, +// while we need to explicitly specify the cpp type if proto type is +// TYPE_MESSAGE to infer the in-memory type. Moreover, default_enum_value is +// used to initialize enum field in proto2. +template <typename Key, typename Value, + WireFormatLite::FieldType kKeyFieldType, + WireFormatLite::FieldType kValueFieldType, + int default_enum_value> +class MapEntry : public MapEntryBase { + // Provide utilities to parse/serialize key/value. Provide utilities to + // manipulate internal stored type. + typedef MapTypeHandler<kKeyFieldType, Key> KeyTypeHandler; + typedef MapTypeHandler<kValueFieldType, Value> ValueTypeHandler; + + // Enum type cannot be used for MapTypeHandler::Read. Define a type + // which will replace Enum with int. + typedef typename KeyTypeHandler::MapEntryAccessorType KeyMapEntryAccessorType; + typedef typename ValueTypeHandler::MapEntryAccessorType + ValueMapEntryAccessorType; + + // Abbreviation for MapEntry + typedef typename google::protobuf::internal::MapEntry< + Key, Value, kKeyFieldType, kValueFieldType, default_enum_value> EntryType; + + // Abbreviation for MapEntryLite + typedef typename google::protobuf::internal::MapEntryLite< + Key, Value, kKeyFieldType, kValueFieldType, default_enum_value> + EntryLiteType; + + public: + ~MapEntry() { + if (this == default_instance_) { + delete reflection_; + } + } + + // accessors ====================================================== + + virtual inline const KeyMapEntryAccessorType& key() const { + return entry_lite_.key(); + } + inline KeyMapEntryAccessorType* mutable_key() { + return entry_lite_.mutable_key(); + } + virtual inline const ValueMapEntryAccessorType& value() const { + return entry_lite_.value(); + } + inline ValueMapEntryAccessorType* mutable_value() { + return entry_lite_.mutable_value(); + } + + // implements Message ============================================= + + bool MergePartialFromCodedStream(::google::protobuf::io::CodedInputStream* input) { + return entry_lite_.MergePartialFromCodedStream(input); + } + + size_t ByteSizeLong() const { + return entry_lite_.ByteSizeLong(); + } + + void SerializeWithCachedSizes(::google::protobuf::io::CodedOutputStream* output) const { + entry_lite_.SerializeWithCachedSizes(output); + } + + ::google::protobuf::uint8* InternalSerializeWithCachedSizesToArray(bool deterministic, + ::google::protobuf::uint8* output) const { + return entry_lite_.InternalSerializeWithCachedSizesToArray(deterministic, + output); + } + + int GetCachedSize() const { + return entry_lite_.GetCachedSize(); + } + + bool IsInitialized() const { + return entry_lite_.IsInitialized(); + } + + Message* New() const { + MapEntry* entry = new MapEntry; + entry->descriptor_ = descriptor_; + entry->reflection_ = reflection_; + entry->set_default_instance(default_instance_); + return entry; + } + + Message* New(Arena* arena) const { + MapEntry* entry = Arena::CreateMessage<MapEntry>(arena); + entry->descriptor_ = descriptor_; + entry->reflection_ = reflection_; + entry->set_default_instance(default_instance_); + return entry; + } + + int SpaceUsed() const { + int size = sizeof(MapEntry); + size += entry_lite_.SpaceUsed(); + return size; + } + + void CopyFrom(const ::google::protobuf::Message& from) { + Clear(); + MergeFrom(from); + } + + void MergeFrom(const ::google::protobuf::Message& from) { + GOOGLE_CHECK_NE(&from, this); + const MapEntry* source = dynamic_cast_if_available<const MapEntry*>(&from); + if (source == NULL) { + ReflectionOps::Merge(from, this); + } else { + MergeFrom(*source); + } + } + + void CopyFrom(const MapEntry& from) { + Clear(); + MergeFrom(from); + } + + void MergeFrom(const MapEntry& from) { + entry_lite_.MergeFrom(from.entry_lite_); + } + + void Clear() { + entry_lite_.Clear(); + } + + void InitAsDefaultInstance() { + entry_lite_.InitAsDefaultInstance(); + } + + Arena* GetArena() const { + return entry_lite_.GetArena(); + } + + // Create default MapEntry instance for given descriptor. Descriptor has to be + // given when creating default MapEntry instance because different map field + // may have the same type and MapEntry class. The given descriptor is needed + // to distinguish instances of the same MapEntry class. + static MapEntry* CreateDefaultInstance(const Descriptor* descriptor) { + MapEntry* entry = new MapEntry; + ReflectionSchema schema = { + entry, + offsets_, + has_bits_, + GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(MapEntry, entry_lite_._has_bits_), + GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(MapEntry, _internal_metadata_), + -1, + -1, + sizeof(MapEntry)}; + const Reflection* reflection = new GeneratedMessageReflection( + descriptor, schema, DescriptorPool::generated_pool(), + MessageFactory::generated_factory()); + entry->descriptor_ = descriptor; + entry->reflection_ = reflection; + entry->set_default_instance(entry); + entry->InitAsDefaultInstance(); + RegisterMapEntryDefaultInstance(entry); + return entry; + } + + private: + MapEntry() + : _internal_metadata_(NULL), default_instance_(NULL), entry_lite_() {} + + explicit MapEntry(Arena* arena) + : _internal_metadata_(arena), + default_instance_(NULL), + entry_lite_(arena) {} + + inline Arena* GetArenaNoVirtual() const { + return entry_lite_.GetArenaNoVirtual(); + } + + void set_default_instance(MapEntry* default_instance) { + default_instance_ = default_instance; + entry_lite_.set_default_instance(&default_instance->entry_lite_); + } + + static uint32 offsets_[2]; + static uint32 has_bits_[2]; + InternalMetadataWithArena _internal_metadata_; + MapEntry* default_instance_; + EntryLiteType entry_lite_; + + friend class ::google::protobuf::Arena; + typedef void InternalArenaConstructable_; + typedef void DestructorSkippable_; + template <typename K, typename V, WireFormatLite::FieldType k_wire_type, + WireFormatLite::FieldType, int default_enum> + friend class internal::MapField; + friend class internal::GeneratedMessageReflection; + + GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(MapEntry); +}; + +template <typename Key, typename Value, WireFormatLite::FieldType kKeyFieldType, + WireFormatLite::FieldType kValueFieldType, int default_enum_value> +uint32 MapEntry<Key, Value, kKeyFieldType, kValueFieldType, + default_enum_value>::offsets_[2] = { + GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(MapEntry, entry_lite_.key_), + GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(MapEntry, entry_lite_.value_), +}; + +template <typename Key, typename Value, WireFormatLite::FieldType kKeyFieldType, + WireFormatLite::FieldType kValueFieldType, int default_enum_value> +uint32 MapEntry<Key, Value, kKeyFieldType, kValueFieldType, + default_enum_value>::has_bits_[2] = {0, 1}; + +} // namespace internal +} // namespace protobuf + +} // namespace google +#endif // GOOGLE_PROTOBUF_MAP_ENTRY_H__ |