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Diffstat (limited to 'third_party/protobuf/3.4.0/src/google/protobuf/map_field_lite.h')
-rw-r--r-- | third_party/protobuf/3.4.0/src/google/protobuf/map_field_lite.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/third_party/protobuf/3.4.0/src/google/protobuf/map_field_lite.h b/third_party/protobuf/3.4.0/src/google/protobuf/map_field_lite.h new file mode 100644 index 0000000000..12d4e6bae1 --- /dev/null +++ b/third_party/protobuf/3.4.0/src/google/protobuf/map_field_lite.h @@ -0,0 +1,128 @@ +// 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_FIELD_LITE_H__ +#define GOOGLE_PROTOBUF_MAP_FIELD_LITE_H__ + +#include <google/protobuf/map.h> +#include <google/protobuf/map_entry_lite.h> +#include <google/protobuf/wire_format_lite.h> + +namespace google { +namespace protobuf { +namespace internal { + +// This class provides access to map field using generated api. It is used for +// internal generated message implentation only. Users should never use this +// directly. +template <typename Derived, typename Key, typename T, + WireFormatLite::FieldType key_wire_type, + WireFormatLite::FieldType value_wire_type, int default_enum_value = 0> +class MapFieldLite { + // Define message type for internal repeated field. + typedef Derived EntryType; + + public: + typedef Map<Key, T> MapType; + typedef EntryType EntryTypeTrait; + + MapFieldLite() : arena_(NULL) { SetDefaultEnumValue(); } + + explicit MapFieldLite(Arena* arena) : arena_(arena), map_(arena) { + SetDefaultEnumValue(); + } + + // Accessors + const Map<Key, T>& GetMap() const { return map_; } + Map<Key, T>* MutableMap() { return &map_; } + + // Convenient methods for generated message implementation. + int size() const { return static_cast<int>(map_.size()); } + void Clear() { return map_.clear(); } + void MergeFrom(const MapFieldLite& other) { + for (typename Map<Key, T>::const_iterator it = other.map_.begin(); + it != other.map_.end(); ++it) { + map_[it->first] = it->second; + } + } + void Swap(MapFieldLite* other) { map_.swap(other->map_); } + + // Set default enum value only for proto2 map field whose value is enum type. + void SetDefaultEnumValue() { + MutableMap()->SetDefaultEnumValue(default_enum_value); + } + + // Used in the implementation of parsing. Caller should take the ownership iff + // arena_ is NULL. + EntryType* NewEntry() const { + if (arena_ == NULL) { + return new EntryType(); + } else { + return Arena::CreateMessage<EntryType>(arena_); + } + } + // Used in the implementation of serializing enum value type. Caller should + // take the ownership iff arena_ is NULL. + EntryType* NewEnumEntryWrapper(const Key& key, const T t) const { + return EntryType::EnumWrap(key, t, arena_); + } + // Used in the implementation of serializing other value types. Caller should + // take the ownership iff arena_ is NULL. + EntryType* NewEntryWrapper(const Key& key, const T& t) const { + return EntryType::Wrap(key, t, arena_); + } + + private: + typedef void DestructorSkippable_; + + Arena* arena_; + Map<Key, T> map_; + + friend class ::google::protobuf::Arena; +}; + +// True if IsInitialized() is true for value field in all elements of t. T is +// expected to be message. It's useful to have this helper here to keep the +// protobuf compiler from ever having to emit loops in IsInitialized() methods. +// We want the C++ compiler to inline this or not as it sees fit. +template <typename Key, typename T> +bool AllAreInitialized(const Map<Key, T>& t) { + for (typename Map<Key, T>::const_iterator it = t.begin(); it != t.end(); + ++it) { + if (!it->second.IsInitialized()) return false; + } + return true; +} + +} // namespace internal +} // namespace protobuf + +} // namespace google +#endif // GOOGLE_PROTOBUF_MAP_FIELD_LITE_H__ |