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/*
* Copyright (C) 2017 Open Source Robotics Foundation
*
* 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 IGNITION_PLUGIN_DETAIL_PLUGINPTR_HH_
#define IGNITION_PLUGIN_DETAIL_PLUGINPTR_HH_
#include <memory>
#include <utility>
#include <ignition/plugin/PluginPtr.hh>
#include <ignition/plugin/utility.hh>
namespace ignition
{
namespace plugin
{
//////////////////////////////////////////////////
template <typename PluginType>
TemplatePluginPtr<PluginType>::TemplatePluginPtr()
: dataPtr(new PluginType)
{
// Do nothing
}
//////////////////////////////////////////////////
template <typename PluginType>
TemplatePluginPtr<PluginType>::TemplatePluginPtr(
const TemplatePluginPtr &_other)
: dataPtr(new PluginType)
{
this->dataPtr->PrivateCopyPluginInstance(*_other.dataPtr);
}
//////////////////////////////////////////////////
template <typename PluginType>
// the following is a false positive with cppcheck 1.82 fixed in 1.83
// cppcheck-suppress syntaxError
template <typename OtherPluginType>
TemplatePluginPtr<PluginType>::TemplatePluginPtr(
const TemplatePluginPtr<OtherPluginType> &_other)
: dataPtr(new PluginType)
{
static_assert(ConstCompatible<PluginType, OtherPluginType>::value,
"The requested PluginPtr cast would discard const qualifiers");
this->dataPtr->PrivateCopyPluginInstance(*_other.dataPtr);
}
//////////////////////////////////////////////////
template <typename PluginType>
TemplatePluginPtr<PluginType>& TemplatePluginPtr<PluginType>::operator =(
const TemplatePluginPtr &_other)
{
this->dataPtr->PrivateCopyPluginInstance(*_other.dataPtr);
return *this;
}
//////////////////////////////////////////////////
template <typename PluginType>
template <typename OtherPluginType>
TemplatePluginPtr<PluginType>& TemplatePluginPtr<PluginType>::operator =(
const TemplatePluginPtr<OtherPluginType> &_other)
{
static_assert(ConstCompatible<PluginType, OtherPluginType>::value,
"The requested PluginPtr cast would discard const qualifiers");
this->dataPtr->PrivateCopyPluginInstance(*_other.dataPtr);
return *this;
}
//////////////////////////////////////////////////
template <typename PluginType>
TemplatePluginPtr<PluginType>::TemplatePluginPtr(
TemplatePluginPtr &&_other)
: dataPtr(std::move(_other.dataPtr))
{
// Do nothing
}
//////////////////////////////////////////////////
template <typename PluginType>
TemplatePluginPtr<PluginType>& TemplatePluginPtr<PluginType>::operator =(
TemplatePluginPtr &&_other)
{
this->dataPtr = std::move(_other.dataPtr);
return *this;
}
//////////////////////////////////////////////////
template <typename PluginType>
TemplatePluginPtr<PluginType>& TemplatePluginPtr<PluginType>::operator =(
std::nullptr_t)
{
this->Clear();
return *this;
}
//////////////////////////////////////////////////
template <typename PluginType>
PluginType* TemplatePluginPtr<PluginType>::operator ->() const
{
return dataPtr.get();
}
//////////////////////////////////////////////////
template <typename PluginType>
PluginType& TemplatePluginPtr<PluginType>::operator *() const
{
return (*dataPtr);
}
//////////////////////////////////////////////////
#define DETAIL_IGN_PLUGIN_PLUGINPTR_IMPLEMENT_OPERATOR(op)\
template <typename PluginType>\
bool TemplatePluginPtr<PluginType>::operator op (\
const TemplatePluginPtr &_other) const\
{\
return (this->dataPtr->PrivateGetInstancePtr() op \
_other.dataPtr->PrivateGetInstancePtr() );\
}
DETAIL_IGN_PLUGIN_PLUGINPTR_IMPLEMENT_OPERATOR( == ) // NOLINT
DETAIL_IGN_PLUGIN_PLUGINPTR_IMPLEMENT_OPERATOR( < ) // NOLINT
DETAIL_IGN_PLUGIN_PLUGINPTR_IMPLEMENT_OPERATOR( > ) // NOLINT
DETAIL_IGN_PLUGIN_PLUGINPTR_IMPLEMENT_OPERATOR( != ) // NOLINT
DETAIL_IGN_PLUGIN_PLUGINPTR_IMPLEMENT_OPERATOR( <= ) // NOLINT
DETAIL_IGN_PLUGIN_PLUGINPTR_IMPLEMENT_OPERATOR( >= ) // NOLINT
//////////////////////////////////////////////////
template <typename PluginType>
std::size_t TemplatePluginPtr<PluginType>::Hash() const
{
return std::hash< std::shared_ptr<void> >()(
this->dataPtr->PrivateGetInstancePtr());
}
//////////////////////////////////////////////////
template <typename PluginType>
bool TemplatePluginPtr<PluginType>::IsEmpty() const
{
return (nullptr == this->dataPtr->PrivateGetInstancePtr());
}
//////////////////////////////////////////////////
template <typename PluginType>
TemplatePluginPtr<PluginType>::operator bool() const
{
return !this->IsEmpty();
}
//////////////////////////////////////////////////
template <typename PluginType>
void TemplatePluginPtr<PluginType>::Clear()
{
this->dataPtr->PrivateCreatePluginInstance(nullptr, nullptr);
}
//////////////////////////////////////////////////
template <typename PluginType>
TemplatePluginPtr<PluginType>::TemplatePluginPtr(
const ConstInfoPtr &_info,
const std::shared_ptr<void> &_dlHandlePtr)
: dataPtr(new PluginType)
{
dataPtr->PrivateCreatePluginInstance(_info, _dlHandlePtr);
}
}
}
// Note that opening up namespace std is legal here because we are specializing
// a templated structure from the STL, which is permitted (and even encouraged).
namespace std
{
/// \brief Template specialization that provides a hash function for PluginPtr
/// so that it can easily be used in STL objects like std::unordered_set and
/// std::unordered_map
template <typename PluginType>
struct hash<ignition::plugin::TemplatePluginPtr<PluginType>>
{
size_t operator()(
const ignition::plugin::TemplatePluginPtr<PluginType> &ptr) const
{
return ptr.Hash();
}
};
}
#endif
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