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rMUSPECTRE µSpectre
field_map_matrixlike.hh
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/**
* file field_map_matrixlike.hh
*
* @author Till Junge <till.junge@epfl.ch>
*
* @date 26 Sep 2017
*
* @brief Eigen-Matrix and -Array maps over strongly typed fields
*
* @section LICENCE
*
* Copyright (C) 2017 Till Junge
*
* µSpectre 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, or (at
* your option) any later version.
*
* µSpectre 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 GNU Emacs; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef FIELD_MAP_MATRIXLIKE_H
#define FIELD_MAP_MATRIXLIKE_H
#include <memory>
#include <Eigen/Dense>
#include "common/field_map_base.hh"
#include "common/T4_map_proxy.hh"
namespace
muSpectre
{
namespace
internal
{
/* ---------------------------------------------------------------------- */
enum
class
Map_t
{
Matrix
,
Array
,
T4Matrix
};
template
<
Map_t
map_type
>
struct
NameWrapper
{
const
static
std
::
string
field_info_root
;
};
template
<>
const
std
::
string
NameWrapper
<
Map_t
::
Array
>::
field_info_root
{
"Array"
};
template
<>
const
std
::
string
NameWrapper
<
Map_t
::
Matrix
>::
field_info_root
{
"Matrix"
};
template
<>
const
std
::
string
NameWrapper
<
Map_t
::
T4Matrix
>::
field_info_root
{
"T4Matrix"
};
/* ---------------------------------------------------------------------- */
template
<
class
FieldCollection
,
class
EigenArray
,
Map_t
map_type
,
bool
ConstField
>
class
MatrixLikeFieldMap
:
public
FieldMap
<
FieldCollection
,
typename
EigenArray
::
Scalar
,
EigenArray
::
SizeAtCompileTime
,
ConstField
>
{
public
:
using
Parent
=
FieldMap
<
FieldCollection
,
typename
EigenArray
::
Scalar
,
EigenArray
::
SizeAtCompileTime
,
ConstField
>
;
using
Ccoord
=
Ccoord_t
<
FieldCollection
::
spatial_dim
()
>
;
using
value_type
=
EigenArray
;
using
const_reference
=
const
value_type
;
using
reference
=
std
::
conditional_t
<
ConstField
,
const_reference
,
value_type
>
;
// since it's a resource handle
using
size_type
=
typename
Parent
::
size_type
;
using
pointer
=
std
::
unique_ptr
<
EigenArray
>
;
using
TypedField
=
typename
Parent
::
TypedField
;
using
Field
=
typename
TypedField
::
Parent
;
using
const_iterator
=
typename
Parent
::
template
iterator
<
MatrixLikeFieldMap
,
true
>
;
using
iterator
=
std
::
conditional_t
<
ConstField
,
const_iterator
,
typename
Parent
::
template
iterator
<
MatrixLikeFieldMap
>>
;
using
reverse_iterator
=
std
::
reverse_iterator
<
iterator
>
;
using
const_reverse_iterator
=
std
::
reverse_iterator
<
const_iterator
>
;
friend
iterator
;
//! Default constructor
MatrixLikeFieldMap
()
=
delete
;
/**
* Constructor using a (non-typed) field. Compatibility is enforced at
* runtime. This should not be a performance concern, as this constructor
* will not be called in anny inner loops (if used as intended).
*/
template
<
bool
isntConst
=!
ConstField
>
MatrixLikeFieldMap
(
std
::
enable_if_t
<
isntConst
,
Field
&>
field
);
template
<
bool
isConst
=
ConstField
>
MatrixLikeFieldMap
(
std
::
enable_if_t
<
isConst
,
const
Field
&>
field
);
/**
* Constructor using a typed field. Compatibility is enforced
* statically. It is not always possible to call this constructor, as the
* type of the field might not be known at compile time.
*/
template
<
class
FC
,
typename
T2
,
Dim_t
NbC
>
MatrixLikeFieldMap
(
TypedFieldBase
<
FC
,
T2
,
NbC
>
&
field
);
//! Copy constructor
MatrixLikeFieldMap
(
const
MatrixLikeFieldMap
&
other
)
=
delete
;
//! Move constructor
MatrixLikeFieldMap
(
MatrixLikeFieldMap
&&
other
)
noexcept
=
delete
;
//! Destructor
virtual
~
MatrixLikeFieldMap
()
noexcept
=
default
;
//! Copy assignment operator
MatrixLikeFieldMap
&
operator
=
(
const
MatrixLikeFieldMap
&
other
)
=
delete
;
//! Move assignment operator
MatrixLikeFieldMap
&
operator
=
(
MatrixLikeFieldMap
&&
other
)
noexcept
=
delete
;
//! give human-readable field map type
inline
std
::
string
info_string
()
const
override
final
;
//! member access
template
<
class
ref
=
reference
>
inline
ref
operator
[](
size_type
index
);
inline
reference
operator
[](
const
Ccoord
&
ccoord
);
//! return an iterator to head of field for ranges
inline
iterator
begin
(){
return
iterator
(
*
this
);}
inline
const_iterator
cbegin
(){
return
const_iterator
(
*
this
);}
//! return an iterator to tail of field for ranges
inline
iterator
end
(){
return
iterator
(
*
this
,
false
);};
inline
const_iterator
cend
(){
return
const_iterator
(
*
this
,
false
);}
protected
:
//! for sad, legacy iterator use
inline
pointer
ptr_to_val_t
(
size_type
index
);
const
static
std
::
string
field_info_root
;
private
:
};
/* ---------------------------------------------------------------------- */
template
<
class
FieldCollection
,
class
EigenArray
,
Map_t
map_type
,
bool
ConstField
>
const
std
::
string
MatrixLikeFieldMap
<
FieldCollection
,
EigenArray
,
map_type
,
ConstField
>::
field_info_root
{
NameWrapper
<
map_type
>::
field_info_root
};
/* ---------------------------------------------------------------------- */
template
<
class
FieldCollection
,
class
EigenArray
,
Map_t
map_type
,
bool
ConstField
>
template
<
bool
isntConst
>
MatrixLikeFieldMap
<
FieldCollection
,
EigenArray
,
map_type
,
ConstField
>::
MatrixLikeFieldMap
(
std
::
enable_if_t
<
isntConst
,
Field
&>
field
)
:
Parent
(
field
)
{
static_assert
((
isntConst
!=
ConstField
),
"let the compiler deduce isntConst, this is a SFINAE "
"parameter"
);
this
->
check_compatibility
();
}
/* ---------------------------------------------------------------------- */
template
<
class
FieldCollection
,
class
EigenArray
,
Map_t
map_type
,
bool
ConstField
>
template
<
bool
isConst
>
MatrixLikeFieldMap
<
FieldCollection
,
EigenArray
,
map_type
,
ConstField
>::
MatrixLikeFieldMap
(
std
::
enable_if_t
<
isConst
,
const
Field
&>
field
)
:
Parent
(
field
)
{
static_assert
((
isConst
==
ConstField
),
"let the compiler deduce isntConst, this is a SFINAE "
"parameter"
);
this
->
check_compatibility
();
}
/* ---------------------------------------------------------------------- */
template
<
class
FieldCollection
,
class
EigenArray
,
Map_t
map_type
,
bool
ConstField
>
template
<
class
FC
,
typename
T2
,
Dim_t
NbC
>
MatrixLikeFieldMap
<
FieldCollection
,
EigenArray
,
map_type
,
ConstField
>::
MatrixLikeFieldMap
(
TypedFieldBase
<
FC
,
T2
,
NbC
>
&
field
)
:
Parent
(
field
)
{
}
/* ---------------------------------------------------------------------- */
//! human-readable field map type
template
<
class
FieldCollection
,
class
EigenArray
,
Map_t
map_type
,
bool
ConstField
>
std
::
string
MatrixLikeFieldMap
<
FieldCollection
,
EigenArray
,
map_type
,
ConstField
>::
info_string
()
const
{
std
::
stringstream
info
;
info
<<
field_info_root
<<
"("
<<
typeid
(
typename
EigenArray
::
value_type
).
name
()
<<
", "
<<
EigenArray
::
RowsAtCompileTime
<<
"x"
<<
EigenArray
::
ColsAtCompileTime
<<
")"
;
return
info
.
str
();
}
/* ---------------------------------------------------------------------- */
//! member access
template
<
class
FieldCollection
,
class
EigenArray
,
Map_t
map_type
,
bool
ConstField
>
template
<
class
ref
>
ref
MatrixLikeFieldMap
<
FieldCollection
,
EigenArray
,
map_type
,
ConstField
>::
operator
[](
size_type
index
)
{
return
ref
(
this
->
get_ptr_to_entry
(
index
));
}
template
<
class
FieldCollection
,
class
EigenArray
,
Map_t
map_type
,
bool
ConstField
>
typename
MatrixLikeFieldMap
<
FieldCollection
,
EigenArray
,
map_type
,
ConstField
>::
reference
MatrixLikeFieldMap
<
FieldCollection
,
EigenArray
,
map_type
,
ConstField
>::
operator
[](
const
Ccoord
&
ccoord
)
{
auto
&&
index
=
this
->
collection
.
get_index
(
ccoord
);
return
reference
(
this
->
get_ptr_to_entry
(
std
::
move
(
index
)));
}
/* ---------------------------------------------------------------------- */
template
<
class
FieldCollection
,
class
EigenArray
,
Map_t
map_type
,
bool
ConstField
>
typename
MatrixLikeFieldMap
<
FieldCollection
,
EigenArray
,
map_type
,
ConstField
>::
pointer
MatrixLikeFieldMap
<
FieldCollection
,
EigenArray
,
map_type
,
ConstField
>::
ptr_to_val_t
(
size_type
index
)
{
return
std
::
make_unique
<
value_type
>
(
this
->
get_ptr_to_entry
(
std
::
move
(
index
)));
}
}
// internal
/* ---------------------------------------------------------------------- */
//! short-hand for an Eigen matrix map as iterate
template
<
class
FieldCollection
,
typename
T
,
Dim_t
NbRows
,
Dim_t
NbCols
,
bool
ConstField
=
false
>
using
MatrixFieldMap
=
internal
::
MatrixLikeFieldMap
<
FieldCollection
,
std
::
conditional_t
<
ConstField
,
Eigen
::
Map
<
const
Eigen
::
Matrix
<
T
,
NbRows
,
NbCols
>>
,
Eigen
::
Map
<
Eigen
::
Matrix
<
T
,
NbRows
,
NbCols
>>>
,
internal
::
Map_t
::
Matrix
,
ConstField
>
;
/* ---------------------------------------------------------------------- */
//! short-hand for an Eigen matrix map as iterate
template
<
class
FieldCollection
,
typename
T
,
Dim_t
Dim
,
bool
MapConst
=
false
,
bool
Symmetric
=
false
>
using
T4MatrixFieldMap
=
internal
::
MatrixLikeFieldMap
<
FieldCollection
,
T4Map
<
T
,
Dim
,
MapConst
,
Symmetric
>
,
internal
::
Map_t
::
T4Matrix
,
MapConst
>
;
/* ---------------------------------------------------------------------- */
//! short-hand for an Eigen array map as iterate
template
<
class
FieldCollection
,
typename
T
,
Dim_t
NbRows
,
Dim_t
NbCols
,
bool
ConstField
=
false
>
using
ArrayFieldMap
=
internal
::
MatrixLikeFieldMap
<
FieldCollection
,
std
::
conditional_t
<
ConstField
,
Eigen
::
Map
<
const
Eigen
::
Array
<
T
,
NbRows
,
NbCols
>>
,
Eigen
::
Map
<
Eigen
::
Array
<
T
,
NbRows
,
NbCols
>>>
,
internal
::
Map_t
::
Array
,
ConstField
>
;
}
// muSpectre
#endif
/* FIELD_MAP_MATRIXLIKE_H */
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