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rTAMAAS tamaas
grid_base.hh
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/**
*
* @author Lucas Frérot <lucas.frerot@epfl.ch>
*
* @section LICENSE
*
* Copyright (©) 2016 EPFL (Ecole Polytechnique Fédérale de
* Lausanne) Laboratory (LSMS - Laboratoire de Simulation en Mécanique des
* Solides)
*
* Tamaas is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Tamaas 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 Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Tamaas. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef __GRID_BASE_HH__
#define __GRID_BASE_HH__
/* -------------------------------------------------------------------------- */
#include "tamaas.hh"
#include "array.hh"
#include <cstddef>
/* -------------------------------------------------------------------------- */
__BEGIN_TAMAAS__
/// Namespace for view index classes
namespace
view
{
/// Index class
struct
index
{
index
(
Int
i
=
-
1
)
:
i
(
i
){}
Int
i
;
};
/// Blocked index class
struct
blocked
:
public
index
{
blocked
(
Int
i
)
:
index
(
i
){}
};
/// Free index class
struct
free
:
public
index
{
free
()
:
index
(
-
1
){}
};
}
template
<
typename
T
>
class
GridBase
{
public
:
/// Constructor by default
GridBase
()
=
default
;
/// Copy constructor
GridBase
(
const
GridBase
&
o
)
:
data
(
o
.
data
),
nb_components
(
o
.
nb_components
),
offset
(
o
.
offset
)
{}
/// Move constructor (transfers data ownership)
GridBase
(
GridBase
&&
o
)
:
data
(
std
::
move
(
o
.
data
)),
nb_components
(
o
.
nb_components
),
offset
(
o
.
offset
)
{}
/// Destructor
virtual
~
GridBase
()
=
default
;
/* -------------------------------------------------------------------------- */
/* Iterator class */
/* -------------------------------------------------------------------------- */
protected
:
struct
iterator
{
/// constructor
iterator
(
T
*
start
,
ptrdiff_t
offset
)
:
ptr
(
start
),
offset
(
offset
)
{}
/// destructor
~
iterator
()
{}
/// pre-increment
inline
iterator
&
operator
++
()
{
ptr
+=
offset
;
return
*
this
;
}
/// comparison
inline
bool
operator
<
(
const
iterator
&
a
)
{
return
ptr
<
a
.
ptr
;
}
/// inequality
inline
bool
operator
!=
(
const
iterator
&
a
)
{
return
ptr
!=
a
.
ptr
;
}
/// increment with given offset
inline
iterator
&
operator
+=
(
ptrdiff_t
a
)
{
ptr
+=
a
*
offset
;
return
*
this
;}
/// dereference iterator
inline
T
&
operator
*
()
{
return
*
ptr
;
}
/// needed for OpenMP range calculations
inline
Int
operator
-
(
const
iterator
&
a
)
const
{
return
(
ptr
-
a
.
ptr
)
/
offset
;
}
protected
:
T
*
ptr
;
ptrdiff_t
offset
;
};
public
:
/// Begin iterator with n components
virtual
iterator
begin
(
UInt
n
=
1
)
{
return
iterator
(
data
.
getPtr
(),
n
);
}
/// End iterator with n components
virtual
iterator
end
(
UInt
n
=
1
)
{
return
iterator
(
data
.
getPtr
()
+
computeSize
(),
n
);
}
public
:
/// Compute size
virtual
UInt
computeSize
()
const
=
0
;
/// Get internal data pointer (const)
const
T
*
getInternalData
()
const
{
return
this
->
data
.
getPtr
();}
/// Get internal data pointer (non-const)
T
*
getInternalData
()
{
return
this
->
data
.
getPtr
();}
/// Get number of components
UInt
getNbComponents
()
const
{
return
nb_components
;}
/// Set number of components
void
setNbComponents
(
UInt
n
)
{
nb_components
=
n
;}
/// Get offset
UInt
getOffset
()
const
{
return
offset
;}
public
:
template
<
typename
T1
>
void
copy
(
const
GridBase
<
T1
>
&
other
)
{
data
=
other
.
data
;
nb_components
=
other
.
nb_components
;
offset
=
other
.
offset
;
}
template
<
typename
T1
>
void
move
(
GridBase
<
T1
>
&&
other
)
{
data
=
std
::
move
(
other
.
data
);
nb_components
=
other
.
nb_components
;
offset
=
other
.
offset
;
other
.
nb_components
=
0
;
other
.
offset
=
0
;
}
protected
:
Array
<
T
>
data
;
UInt
nb_components
=
1
;
UInt
offset
=
0
;
};
__END_TAMAAS__
#endif
// __GRID_BASE_HH__
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