delayedparameter.hh
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/* -*- mia-c++ -*-
*
* This file is part of MIA - a toolbox for medical image analysis
* Copyright (c) Leipzig, Madrid 1999-2017 Gert Wollny
*
* MIA is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MIA; if not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef mia_core_delayedparameter_hh
#define mia_core_delayedparameter_hh
#include <string>
#include <stdexcept>
#include <mia/core/defines.hh>
#include <mia/core/datapool.hh>
#include <mia/core/errormacro.hh>
NS_MIA_BEGIN
template <typename T>
class TDelayedParameter
{
public:
TDelayedParameter() = default;
TDelayedParameter(const std::string& key);
const T get() const;
bool pool_has_key() const;
bool key_is_valid() const;
const std::string& get_key() const;
private:
std::string m_key;
};
template <typename T>
TDelayedParameter<T>::TDelayedParameter(const std::string& key):
m_key(key)
{
}
template <typename T>
const T TDelayedParameter<T>::get() const
{
if (!(CDatapool::instance().has_key(m_key))) {
throw create_exception<std::invalid_argument>("TDelayedParameter::get(): Key '", m_key,
"' is not available in the data pool");
}
return boost::any_cast<T>(CDatapool::instance().get(m_key));
}
template <typename T>
bool TDelayedParameter<T>::pool_has_key() const
{
return CDatapool::instance().has_key(m_key);
}
template <typename T>
bool TDelayedParameter<T>::key_is_valid() const
{
return !m_key.empty();
}
template <typename T>
const std::string& TDelayedParameter<T>::get_key() const
{
return m_key;
}
NS_MIA_END
#endif
CDatapool::has_key
bool has_key(const std::string &key) const
CDatapool::instance
static CDatapool & instance()
TDelayedParameter::get
const T get() const
Definition delayedparameter.hh:91
TDelayedParameter::key_is_valid
bool key_is_valid() const
Definition delayedparameter.hh:109
TDelayedParameter::TDelayedParameter
TDelayedParameter(const std::string &key)
Definition delayedparameter.hh:84
TDelayedParameter::get_key
const std::string & get_key() const
Definition delayedparameter.hh:115
TDelayedParameter::pool_has_key
bool pool_has_key() const
Definition delayedparameter.hh:102
TDelayedParameter::TDelayedParameter
TDelayedParameter()=default
datapool.hh
defines.hh
NS_MIA_BEGIN
#define NS_MIA_BEGIN
conveniance define to start the mia namespace
Definition defines.hh:33
NS_MIA_END
#define NS_MIA_END
conveniance define to end the mia namespace
Definition defines.hh:36
errormacro.hh
create_exception
E create_exception(T ...t)
helper template to create exceptions with complex messages
Definition errormacro.hh:80