// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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// https://developers.google.com/protocol-buffers/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef GOOGLE_PROTOBUF_MAP_FIELD_LITE_H__
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#define GOOGLE_PROTOBUF_MAP_FIELD_LITE_H__
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#include <google/protobuf/map.h>
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#include <google/protobuf/map_entry_lite.h>
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namespace google {
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namespace protobuf {
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namespace internal {
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// This class provides access to map field using generated api. It is used for
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// internal generated message implentation only. Users should never use this
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// directly.
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template <typename Key, typename T,
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WireFormatLite::FieldType key_wire_type,
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WireFormatLite::FieldType value_wire_type,
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int default_enum_value = 0>
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class MapFieldLite {
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// Define message type for internal repeated field.
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typedef MapEntryLite<Key, T, key_wire_type, value_wire_type,
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default_enum_value> EntryType;
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public:
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MapFieldLite();
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explicit MapFieldLite(Arena* arena);
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virtual ~MapFieldLite();
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// Accessors
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virtual const Map<Key, T>& GetMap() const;
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virtual Map<Key, T>* MutableMap();
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// Convenient methods for generated message implementation.
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virtual int size() const;
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virtual void Clear();
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virtual void MergeFrom(const MapFieldLite& other);
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virtual void Swap(MapFieldLite* other);
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// Set default enum value only for proto2 map field whose value is enum type.
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void SetDefaultEnumValue();
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// Used in the implementation of parsing. Caller should take the ownership iff
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// arena_ is NULL.
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EntryType* NewEntry() const;
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// Used in the implementation of serializing enum value type. Caller should
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// take the ownership iff arena_ is NULL.
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EntryType* NewEnumEntryWrapper(const Key& key, const T t) const;
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// Used in the implementation of serializing other value types. Caller should
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// take the ownership iff arena_ is NULL.
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EntryType* NewEntryWrapper(const Key& key, const T& t) const;
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protected:
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// Convenient methods to get internal google::protobuf::Map
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virtual const Map<Key, T>& GetInternalMap() const;
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virtual Map<Key, T>* MutableInternalMap();
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private:
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typedef void DestructorSkippable_;
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Arena* arena_;
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Map<Key, T>* map_;
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friend class ::google::protobuf::Arena;
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};
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template <typename Key, typename T,
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WireFormatLite::FieldType key_wire_type,
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WireFormatLite::FieldType value_wire_type,
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int default_enum_value>
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MapFieldLite<Key, T, key_wire_type, value_wire_type,
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default_enum_value>::MapFieldLite()
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: arena_(NULL) {
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map_ = new Map<Key, T>;
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SetDefaultEnumValue();
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}
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template <typename Key, typename T,
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WireFormatLite::FieldType key_wire_type,
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WireFormatLite::FieldType value_wire_type,
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int default_enum_value>
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MapFieldLite<Key, T, key_wire_type, value_wire_type,
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default_enum_value>::MapFieldLite(Arena* arena)
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: arena_(arena) {
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map_ = Arena::CreateMessage<Map<Key, T> >(arena);
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SetDefaultEnumValue();
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}
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template <typename Key, typename T,
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WireFormatLite::FieldType key_wire_type,
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WireFormatLite::FieldType value_wire_type,
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int default_enum_value>
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MapFieldLite<Key, T, key_wire_type, value_wire_type,
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default_enum_value>::~MapFieldLite() {
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delete map_;
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}
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template <typename Key, typename T,
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WireFormatLite::FieldType key_wire_type,
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WireFormatLite::FieldType value_wire_type,
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int default_enum_value>
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const Map<Key, T>&
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MapFieldLite<Key, T, key_wire_type, value_wire_type,
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default_enum_value>::GetMap() const {
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return *map_;
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}
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template <typename Key, typename T,
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WireFormatLite::FieldType key_wire_type,
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WireFormatLite::FieldType value_wire_type,
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int default_enum_value>
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Map<Key, T>*
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MapFieldLite<Key, T, key_wire_type, value_wire_type,
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default_enum_value>::MutableMap() {
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return map_;
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}
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template <typename Key, typename T,
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WireFormatLite::FieldType key_wire_type,
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WireFormatLite::FieldType value_wire_type,
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int default_enum_value>
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int
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MapFieldLite<Key, T, key_wire_type, value_wire_type,
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default_enum_value>::size() const {
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return map_->size();
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}
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template <typename Key, typename T,
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WireFormatLite::FieldType key_wire_type,
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WireFormatLite::FieldType value_wire_type,
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int default_enum_value>
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void
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MapFieldLite<Key, T, key_wire_type, value_wire_type,
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default_enum_value>::Clear() {
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map_->clear();
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}
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template <typename Key, typename T,
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WireFormatLite::FieldType key_wire_type,
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WireFormatLite::FieldType value_wire_type,
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int default_enum_value>
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void
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MapFieldLite<Key, T, key_wire_type, value_wire_type,
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default_enum_value>::MergeFrom(
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const MapFieldLite& other) {
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for (typename Map<Key, T>::const_iterator it = other.map_->begin();
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it != other.map_->end(); ++it) {
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(*map_)[it->first] = it->second;
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}
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}
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template <typename Key, typename T,
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WireFormatLite::FieldType key_wire_type,
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WireFormatLite::FieldType value_wire_type,
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int default_enum_value>
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void
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MapFieldLite<Key, T, key_wire_type, value_wire_type,
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default_enum_value>::Swap(
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MapFieldLite* other) {
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std::swap(map_, other->map_);
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}
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template <typename Key, typename T,
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WireFormatLite::FieldType key_wire_type,
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WireFormatLite::FieldType value_wire_type,
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int default_enum_value>
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void
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MapFieldLite<Key, T, key_wire_type, value_wire_type,
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default_enum_value>::SetDefaultEnumValue() {
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MutableInternalMap()->SetDefaultEnumValue(default_enum_value);
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}
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template <typename Key, typename T,
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WireFormatLite::FieldType key_wire_type,
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WireFormatLite::FieldType value_wire_type,
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int default_enum_value>
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const Map<Key, T>&
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MapFieldLite<Key, T, key_wire_type, value_wire_type,
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default_enum_value>::GetInternalMap() const {
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return *map_;
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}
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template <typename Key, typename T,
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WireFormatLite::FieldType key_wire_type,
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WireFormatLite::FieldType value_wire_type,
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int default_enum_value>
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Map<Key, T>*
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MapFieldLite<Key, T, key_wire_type, value_wire_type,
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default_enum_value>::MutableInternalMap() {
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return map_;
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}
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#define EntryType \
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MapEntryLite<Key, T, key_wire_type, value_wire_type, default_enum_value>
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template <typename Key, typename T,
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WireFormatLite::FieldType key_wire_type,
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WireFormatLite::FieldType value_wire_type,
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int default_enum_value>
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EntryType*
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MapFieldLite<Key, T, key_wire_type, value_wire_type,
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default_enum_value>::NewEntry() const {
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if (arena_ == NULL) {
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return new EntryType();
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} else {
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return Arena::CreateMessage<EntryType>(arena_);
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}
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}
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template <typename Key, typename T,
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WireFormatLite::FieldType key_wire_type,
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WireFormatLite::FieldType value_wire_type,
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int default_enum_value>
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EntryType*
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MapFieldLite<Key, T, key_wire_type, value_wire_type,
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default_enum_value>::NewEnumEntryWrapper(const Key& key,
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const T t) const {
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return EntryType::EnumWrap(key, t, arena_);
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}
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template <typename Key, typename T,
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WireFormatLite::FieldType key_wire_type,
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WireFormatLite::FieldType value_wire_type,
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int default_enum_value>
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EntryType*
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MapFieldLite<Key, T, key_wire_type, value_wire_type,
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default_enum_value>::NewEntryWrapper(const Key& key,
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const T& t) const {
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return EntryType::Wrap(key, t, arena_);
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}
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#undef EntryType
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// True if IsInitialized() is true for value field in all elements of t. T is
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// expected to be message. It's useful to have this helper here to keep the
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// protobuf compiler from ever having to emit loops in IsInitialized() methods.
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// We want the C++ compiler to inline this or not as it sees fit.
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template <typename Key, typename T>
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bool AllAreInitialized(const Map<Key, T>& t) {
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for (typename Map<Key, T>::const_iterator it = t.begin(); it != t.end();
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++it) {
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if (!it->second.IsInitialized()) return false;
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}
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return true;
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}
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} // namespace internal
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} // namespace protobuf
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} // namespace google
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#endif // GOOGLE_PROTOBUF_MAP_FIELD_LITE_H__
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