blob: 549ecc08021f9914a10b5469f435c322fdf86a46 [file] [log] [blame]
// 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>
namespace google {
namespace protobuf {
namespace internal {
// This class provides accesss to map field using generated api. It is used for
// internal generated message implentation only. Users should never use this
// directly.
template <typename Key, typename T,
WireFormatLite::FieldType key_wire_type,
WireFormatLite::FieldType value_wire_type,
int default_enum_value = 0>
class LIBPROTOBUF_EXPORT MapFieldLite {
// Define message type for internal repeated field.
typedef MapEntryLite<Key, T, key_wire_type, value_wire_type,
default_enum_value> EntryType;
public:
MapFieldLite();
explicit MapFieldLite(Arena* arena);
virtual ~MapFieldLite();
// Accessors
virtual const Map<Key, T>& GetMap() const;
virtual Map<Key, T>* MutableMap();
// Convenient methods for generated message implementation.
virtual int size() const;
virtual void Clear();
virtual void MergeFrom(const MapFieldLite& other);
virtual void Swap(MapFieldLite* other);
// Set default enum value only for proto2 map field whose value is enum type.
void SetDefaultEnumValue();
// Used in the implementation of parsing. Caller should take the ownership.
EntryType* NewEntry() const;
// Used in the implementation of serializing enum value type. Caller should
// take the ownership.
EntryType* NewEnumEntryWrapper(const Key& key, const T t) const;
// Used in the implementation of serializing other value types. Caller should
// take the ownership.
EntryType* NewEntryWrapper(const Key& key, const T& t) const;
protected:
// Convenient methods to get internal google::protobuf::Map
virtual const Map<Key, T>& GetInternalMap() const;
virtual Map<Key, T>* MutableInternalMap();
private:
typedef void DestructorSkippable_;
Arena* arena_;
Map<Key, T>* map_;
friend class ::google::protobuf::Arena;
};
template <typename Key, typename T,
WireFormatLite::FieldType key_wire_type,
WireFormatLite::FieldType value_wire_type,
int default_enum_value>
MapFieldLite<Key, T, key_wire_type, value_wire_type,
default_enum_value>::MapFieldLite()
: arena_(NULL) {
map_ = new Map<Key, T>;
SetDefaultEnumValue();
}
template <typename Key, typename T,
WireFormatLite::FieldType key_wire_type,
WireFormatLite::FieldType value_wire_type,
int default_enum_value>
MapFieldLite<Key, T, key_wire_type, value_wire_type,
default_enum_value>::MapFieldLite(Arena* arena)
: arena_(arena) {
map_ = Arena::Create<Map<Key, T> >(arena, arena);
SetDefaultEnumValue();
}
template <typename Key, typename T,
WireFormatLite::FieldType key_wire_type,
WireFormatLite::FieldType value_wire_type,
int default_enum_value>
MapFieldLite<Key, T, key_wire_type, value_wire_type,
default_enum_value>::~MapFieldLite() {
delete map_;
}
template <typename Key, typename T,
WireFormatLite::FieldType key_wire_type,
WireFormatLite::FieldType value_wire_type,
int default_enum_value>
const Map<Key, T>&
MapFieldLite<Key, T, key_wire_type, value_wire_type,
default_enum_value>::GetMap() const {
return *map_;
}
template <typename Key, typename T,
WireFormatLite::FieldType key_wire_type,
WireFormatLite::FieldType value_wire_type,
int default_enum_value>
Map<Key, T>*
MapFieldLite<Key, T, key_wire_type, value_wire_type,
default_enum_value>::MutableMap() {
return map_;
}
template <typename Key, typename T,
WireFormatLite::FieldType key_wire_type,
WireFormatLite::FieldType value_wire_type,
int default_enum_value>
int
MapFieldLite<Key, T, key_wire_type, value_wire_type,
default_enum_value>::size() const {
return map_->size();
}
template <typename Key, typename T,
WireFormatLite::FieldType key_wire_type,
WireFormatLite::FieldType value_wire_type,
int default_enum_value>
void
MapFieldLite<Key, T, key_wire_type, value_wire_type,
default_enum_value>::Clear() {
map_->clear();
}
template <typename Key, typename T,
WireFormatLite::FieldType key_wire_type,
WireFormatLite::FieldType value_wire_type,
int default_enum_value>
void
MapFieldLite<Key, T, key_wire_type, value_wire_type,
default_enum_value>::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;
}
}
template <typename Key, typename T,
WireFormatLite::FieldType key_wire_type,
WireFormatLite::FieldType value_wire_type,
int default_enum_value>
void
MapFieldLite<Key, T, key_wire_type, value_wire_type,
default_enum_value>::Swap(
MapFieldLite* other) {
std::swap(map_, other->map_);
}
template <typename Key, typename T,
WireFormatLite::FieldType key_wire_type,
WireFormatLite::FieldType value_wire_type,
int default_enum_value>
void
MapFieldLite<Key, T, key_wire_type, value_wire_type,
default_enum_value>::SetDefaultEnumValue() {
MutableInternalMap()->SetDefaultEnumValue(default_enum_value);
}
template <typename Key, typename T,
WireFormatLite::FieldType key_wire_type,
WireFormatLite::FieldType value_wire_type,
int default_enum_value>
const Map<Key, T>&
MapFieldLite<Key, T, key_wire_type, value_wire_type,
default_enum_value>::GetInternalMap() const {
return *map_;
}
template <typename Key, typename T,
WireFormatLite::FieldType key_wire_type,
WireFormatLite::FieldType value_wire_type,
int default_enum_value>
Map<Key, T>*
MapFieldLite<Key, T, key_wire_type, value_wire_type,
default_enum_value>::MutableInternalMap() {
return map_;
}
#define EntryType \
MapEntryLite<Key, T, key_wire_type, value_wire_type, default_enum_value>
template <typename Key, typename T,
WireFormatLite::FieldType key_wire_type,
WireFormatLite::FieldType value_wire_type,
int default_enum_value>
EntryType*
MapFieldLite<Key, T, key_wire_type, value_wire_type,
default_enum_value>::NewEntry() const {
if (arena_ == NULL) {
return new EntryType();
} else {
return Arena::CreateMessage<EntryType>(arena_);
}
}
template <typename Key, typename T,
WireFormatLite::FieldType key_wire_type,
WireFormatLite::FieldType value_wire_type,
int default_enum_value>
EntryType*
MapFieldLite<Key, T, key_wire_type, value_wire_type,
default_enum_value>::NewEnumEntryWrapper(const Key& key,
const T t) const {
return EntryType::EnumWrap(key, t, arena_);
}
template <typename Key, typename T,
WireFormatLite::FieldType key_wire_type,
WireFormatLite::FieldType value_wire_type,
int default_enum_value>
EntryType*
MapFieldLite<Key, T, key_wire_type, value_wire_type,
default_enum_value>::NewEntryWrapper(const Key& key,
const T& t) const {
return EntryType::Wrap(key, t, arena_);
}
#undef EntryType
// 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__