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+// 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 <type_traits>
+#include <parse_context.h>
+#include <io/coded_stream.h>
+#include <map.h>
+#include <map_entry_lite.h>
+#include <port.h>
+#include <wire_format_lite.h>
+
+#include <port_def.inc>
+
+#ifdef SWIG
+#error "You cannot SWIG proto headers"
+#endif
+
+namespace google {
+namespace protobuf {
+namespace internal {
+
+// This class provides access to map field using generated api. It is used for
+// internal generated message implementation only. Users should never use this
+// directly.
+template <typename Derived, typename Key, typename T,
+ WireFormatLite::FieldType key_wire_type,
+ WireFormatLite::FieldType value_wire_type>
+class MapFieldLite {
+ // Define message type for internal repeated field.
+ typedef Derived EntryType;
+
+ public:
+ typedef Map<Key, T> MapType;
+ typedef EntryType EntryTypeTrait;
+
+ constexpr MapFieldLite() {}
+
+ explicit MapFieldLite(Arena* arena) : map_(arena) {}
+
+ // 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_); }
+ void InternalSwap(MapFieldLite* other) { map_.InternalSwap(other->map_); }
+
+ // Used in the implementation of parsing. Caller should take the ownership iff
+ // arena_ is nullptr.
+ EntryType* NewEntry() const {
+ return Arena::CreateMessage<EntryType>(map_.arena());
+ }
+ // Used in the implementation of serializing enum value type. Caller should
+ // take the ownership iff arena_ is nullptr.
+ EntryType* NewEnumEntryWrapper(const Key& key, const T t) const {
+ return EntryType::EnumWrap(key, t, map_.arena_);
+ }
+ // Used in the implementation of serializing other value types. Caller should
+ // take the ownership iff arena_ is nullptr.
+ EntryType* NewEntryWrapper(const Key& key, const T& t) const {
+ return EntryType::Wrap(key, t, map_.arena_);
+ }
+
+ const char* _InternalParse(const char* ptr, ParseContext* ctx) {
+ typename Derived::template Parser<MapFieldLite, Map<Key, T>> parser(this);
+ return parser._InternalParse(ptr, ctx);
+ }
+
+ template <typename UnknownType>
+ const char* ParseWithEnumValidation(const char* ptr, ParseContext* ctx,
+ bool (*is_valid)(int), uint32_t field_num,
+ InternalMetadata* metadata) {
+ typename Derived::template Parser<MapFieldLite, Map<Key, T>> parser(this);
+ return parser.template ParseWithEnumValidation<UnknownType>(
+ ptr, ctx, is_valid, field_num, metadata);
+ }
+
+ private:
+ typedef void DestructorSkippable_;
+
+ Map<Key, T> map_;
+
+ friend class ::PROTOBUF_NAMESPACE_ID::Arena;
+};
+
+template <typename UnknownType, typename T>
+struct EnumParseWrapper {
+ const char* _InternalParse(const char* ptr, ParseContext* ctx) {
+ return map_field->template ParseWithEnumValidation<UnknownType>(
+ ptr, ctx, is_valid, field_num, metadata);
+ }
+ T* map_field;
+ bool (*is_valid)(int);
+ uint32_t field_num;
+ InternalMetadata* metadata;
+};
+
+// Helper function because the typenames of maps are horrendous to print. This
+// leverages compiler type deduction, to keep all type data out of the
+// generated code
+template <typename UnknownType, typename T>
+EnumParseWrapper<UnknownType, T> InitEnumParseWrapper(
+ T* map_field, bool (*is_valid)(int), uint32_t field_num,
+ InternalMetadata* metadata) {
+ return EnumParseWrapper<UnknownType, T>{map_field, is_valid, field_num,
+ metadata};
+}
+
+// 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 Derived, typename Key, typename T,
+ WireFormatLite::FieldType key_wire_type,
+ WireFormatLite::FieldType value_wire_type>
+bool AllAreInitialized(const MapFieldLite<Derived, Key, T, key_wire_type,
+ value_wire_type>& field) {
+ const auto& t = field.GetMap();
+ for (typename Map<Key, T>::const_iterator it = t.begin(); it != t.end();
+ ++it) {
+ if (!it->second.IsInitialized()) return false;
+ }
+ return true;
+}
+
+template <typename MEntry>
+struct MapEntryToMapField : MapEntryToMapField<typename MEntry::SuperType> {};
+
+template <typename T, typename Key, typename Value,
+ WireFormatLite::FieldType kKeyFieldType,
+ WireFormatLite::FieldType kValueFieldType>
+struct MapEntryToMapField<
+ MapEntryLite<T, Key, Value, kKeyFieldType, kValueFieldType>> {
+ typedef MapFieldLite<
+ MapEntryLite<T, Key, Value, kKeyFieldType, kValueFieldType>, Key, Value,
+ kKeyFieldType, kValueFieldType>
+ MapFieldType;
+};
+
+} // namespace internal
+} // namespace protobuf
+} // namespace google
+
+#include <port_undef.inc>
+
+#endif // GOOGLE_PROTOBUF_MAP_FIELD_LITE_H__