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graphengine/inc/graph/detail/any_map.h

121 lines
2.9 KiB

/**
* Copyright 2019-2020 Huawei Technologies Co., Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef INC_GRAPH_DETAIL_ANY_MAP_H_
#define INC_GRAPH_DETAIL_ANY_MAP_H_
#include <map>
#include <memory>
#include <string>
#include <utility>
namespace ge {
using std::shared_ptr;
using std::string;
class TypeID {
public:
template <class T>
static TypeID Of() {
return TypeID(__PRETTY_FUNCTION__);
}
~TypeID() = default;
bool operator==(const TypeID &__arg) const { return type_ == __arg.type_; }
private:
explicit TypeID(string type) : type_(std::move(type)) {} // lint !e30 !e32
string type_;
};
class AnyMap {
public:
template <class DT>
bool Set(const string &name, const DT &val);
template <class T>
bool Get(const string &name, T &retValue) const;
bool Has(const string &name) const { return anyValues_.find(name) != anyValues_.end(); }
void Swap(AnyMap &other) { anyValues_.swap(other.anyValues_); }
private:
class Placeholder {
public:
virtual ~Placeholder() = default;
virtual const TypeID &GetTypeInfo() const = 0;
};
template <typename VT>
class Holder : public Placeholder {
public:
explicit Holder(const VT &value) : value_(value) {}
~Holder() override = default;
const TypeID &GetTypeInfo() const override {
static const TypeID typeId = TypeID::Of<VT>();
return typeId;
}
const VT value_;
};
std::map<string, shared_ptr<Placeholder>> anyValues_;
};
template <class DT>
bool AnyMap::Set(const string &name, const DT &val) {
auto it = anyValues_.find(name);
std::shared_ptr<Holder<DT>> tmp;
try {
tmp = std::make_shared<Holder<DT>>(val);
} catch (std::bad_alloc &e) {
tmp = nullptr;
} catch (...) {
tmp = nullptr;
}
if (it == anyValues_.end()) {
(void)anyValues_.emplace(name, tmp);
} else {
if (it->second && it->second->GetTypeInfo() == TypeID::Of<DT>()) {
it->second = tmp;
} else {
return false;
}
}
return true;
}
template <class T>
bool AnyMap::Get(const string &name, T &retValue) const {
auto it = anyValues_.find(name);
if (it != anyValues_.end() && it->second && it->second->GetTypeInfo() == TypeID::Of<T>()) {
auto retPtr = std::static_pointer_cast<Holder<T>>(it->second);
retValue = retPtr->value_;
return true;
}
return false;
}
} // namespace ge
#endif // INC_GRAPH_DETAIL_ANY_MAP_H_