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Diffstat (limited to 'third_party/protobuf/3.4.0/src/google/protobuf/map_entry.h')
| -rw-r--r-- | third_party/protobuf/3.4.0/src/google/protobuf/map_entry.h | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/third_party/protobuf/3.4.0/src/google/protobuf/map_entry.h b/third_party/protobuf/3.4.0/src/google/protobuf/map_entry.h new file mode 100644 index 0000000000..afe809b28a --- /dev/null +++ b/third_party/protobuf/3.4.0/src/google/protobuf/map_entry.h @@ -0,0 +1,179 @@ +// 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 Derived, typename Key, typename Value, + WireFormatLite::FieldType kKeyFieldType, + WireFormatLite::FieldType kValueFieldType, int default_enum_value> +class MapField; +} +} + +namespace protobuf { +namespace internal { + +// 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 Derived, typename Key, typename Value, + WireFormatLite::FieldType kKeyFieldType, + WireFormatLite::FieldType kValueFieldType, int default_enum_value> +class MapEntry + : public MapEntryImpl<Derived, Message, Key, Value, kKeyFieldType, + kValueFieldType, default_enum_value> { + public: + // 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 const Reflection* CreateReflection(const Descriptor* descriptor, + const Derived* entry) { + ReflectionSchema schema = { + entry, + offsets_, + has_bits_, + GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(MapEntry, _has_bits_), + GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(MapEntry, _internal_metadata_), + -1, + -1, + sizeof(MapEntry), + -1, + }; + const Reflection* reflection = new GeneratedMessageReflection( + descriptor, schema, DescriptorPool::generated_pool(), + MessageFactory::generated_factory()); + return reflection; + } + + MapEntry() : _internal_metadata_(NULL) {} + explicit MapEntry(Arena* arena) + : MapEntryImpl<Derived, Message, Key, Value, kKeyFieldType, + kValueFieldType, default_enum_value>(arena), + _internal_metadata_(arena) {} + typedef void InternalArenaConstructable_; + typedef void DestructorSkippable_; + + private: + static uint32 offsets_[2]; + static uint32 has_bits_[2]; + InternalMetadataWithArena _internal_metadata_; + + friend class ::google::protobuf::Arena; + template <typename C, 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 Derived, typename Key, typename Value, + WireFormatLite::FieldType kKeyFieldType, + WireFormatLite::FieldType kValueFieldType, int default_enum_value> +uint32 MapEntry<Derived, Key, Value, kKeyFieldType, kValueFieldType, + default_enum_value>::offsets_[2] = { + GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(MapEntry, key_), + GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(MapEntry, value_), +}; + +template <typename Derived, typename Key, typename Value, + WireFormatLite::FieldType kKeyFieldType, + WireFormatLite::FieldType kValueFieldType, int default_enum_value> +uint32 MapEntry<Derived, Key, Value, kKeyFieldType, kValueFieldType, + default_enum_value>::has_bits_[2] = {0, 1}; + +// Specialization for the full runtime +template <typename Derived, typename Key, typename Value, + WireFormatLite::FieldType kKeyFieldType, + WireFormatLite::FieldType kValueFieldType, int default_enum_value> +struct MapEntryHelper<MapEntry<Derived, Key, Value, kKeyFieldType, + kValueFieldType, default_enum_value> > + : MapEntryHelper<MapEntryLite<Key, Value, kKeyFieldType, kValueFieldType, + default_enum_value> > { + explicit MapEntryHelper(const MapPair<Key, Value>& map_pair) + : MapEntryHelper<MapEntryLite<Key, Value, kKeyFieldType, kValueFieldType, + default_enum_value> >(map_pair) {} +}; + +template <typename Derived, typename K, typename V, + WireFormatLite::FieldType key, WireFormatLite::FieldType value, + int default_enum> +struct DeconstructMapEntry<MapEntry<Derived, K, V, key, value, default_enum> > { + typedef K Key; + typedef V Value; + static const WireFormatLite::FieldType kKeyFieldType = key; + static const WireFormatLite::FieldType kValueFieldType = value; + static const int default_enum_value = default_enum; +}; + +} // namespace internal +} // namespace protobuf + +} // namespace google +#endif // GOOGLE_PROTOBUF_MAP_ENTRY_H__ |