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field_container.hh
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Mon, Jun 3, 06:00
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rTAMAAS tamaas
field_container.hh
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/*
* SPDX-License-Indentifier: AGPL-3.0-or-later
*
* Copyright (©) 2016-2022 EPFL (École Polytechnique Fédérale de Lausanne),
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
* Copyright (©) 2020-2022 Lucas Frérot
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef FIELD_CONTAINER_HH
#define FIELD_CONTAINER_HH
/* -------------------------------------------------------------------------- */
#include "grid.hh"
#include <algorithm>
#include <boost/variant.hpp>
#include <memory>
#include <string>
#include <unordered_map>
/* -------------------------------------------------------------------------- */
namespace
tamaas
{
/* -------------------------------------------------------------------------- */
struct
FieldContainer
{
// Useful type names
using
Key
=
std
::
string
;
template
<
class
T
>
using
GridBasePtr
=
std
::
shared_ptr
<
GridBase
<
T
>>
;
// TODO C++17: switch to std::variant
using
Value
=
boost
::
variant
<
GridBasePtr
<
Real
>
,
GridBasePtr
<
UInt
>
,
GridBasePtr
<
Int
>
,
GridBasePtr
<
Complex
>
,
GridBasePtr
<
bool
>>
;
using
FieldsMap
=
std
::
unordered_map
<
Key
,
Value
>
;
/// Destructor
virtual
~
FieldContainer
()
=
default
;
/// Access field pointer in const context
const
Value
&
at
(
const
Key
&
name
)
const
{
return
fields_
.
at
(
name
);
}
/// Access/insert new pointer
Value
&
operator
[](
const
Key
&
name
)
{
return
fields_
[
name
];
}
/// Access field of given type (non-const)
template
<
class
T
>
auto
&
field
(
const
Key
&
name
)
{
return
*
boost
::
get
<
GridBasePtr
<
T
>>
(
at
(
name
));
}
/// Access field of given type (const)
template
<
class
T
>
const
auto
&
field
(
const
Key
&
name
)
const
{
return
*
boost
::
get
<
GridBasePtr
<
T
>>
(
at
(
name
));
}
/// Return field keys
decltype
(
auto
)
fields
()
const
{
std
::
vector
<
Key
>
keys
;
std
::
transform
(
fields_
.
cbegin
(),
fields_
.
cend
(),
std
::
back_inserter
(
keys
),
[](
auto
&&
pair
)
{
return
pair
.
first
;
});
return
keys
;
}
/// Return pointer map to fields
const
auto
&
fields_map
()
const
{
return
fields_
;
}
private
:
FieldsMap
fields_
;
};
}
// namespace tamaas
#endif
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