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// SPDX-FileCopyrightText: Copyright © DUNE Project contributors, see file LICENSE.md in module root
// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
// -*- tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
#ifndef DUNE_PYTHON_GRID_IDSET_HH
#define DUNE_PYTHON_GRID_IDSET_HH
#include <functional>
#include <tuple>
#include <type_traits>
#include <utility>
#include <dune/common/hybridutilities.hh>
#include <dune/common/typeutilities.hh>
#include <dune/python/common/string.hh>
#include <dune/python/common/typeregistry.hh>
#include <dune/python/pybind11/pybind11.h>
#include <dune/python/pybind11/operators.h>
namespace Dune
{
namespace Python
{
namespace detail
{
// GridId
// ------
template< class Id >
struct GridId
{
Id id;
};
// Comparison Operators
// --------------------
template< class Id >
inline static bool operator== ( const GridId< Id > &a, const GridId< Id > &b )
{
return (a.id == b.id);
}
template< class Id >
inline static bool operator!= ( const GridId< Id > &a, const GridId< Id > &b )
{
return !(a == b);
}
template< class Id >
inline static bool operator< ( const GridId< Id > &a, const GridId< Id > &b )
{
return (a.id < b.id);
}
template< class Id >
inline static bool operator>= ( const GridId< Id > &a, const GridId< Id > &b )
{
return !(a.id < b.id);
}
template< class Id >
inline static auto operator<= ( const GridId< Id > &a, const GridId< Id > &b )
-> std::enable_if_t< std::is_same< decltype( a.id <= b.id ), bool >::value, bool >
{
return (a.id <= b.id);
}
template< class Id >
inline static auto operator<= ( const GridId< Id > &a, const GridId< Id > &b )
-> std::enable_if_t< !std::is_same< decltype( a.id <= b.id ), bool >::value, bool >
{
return (a.id < b.id) || (a.id == b.id);
}
template< class Id >
inline static bool operator> ( const GridId< Id > &a, const GridId< Id > &b )
{
return !(a.id <= b.id);
}
// to_string
// ---------
template< class Id >
inline static auto to_string ( const GridId< Id > &id, PriorityTag< 2 > )
-> decltype( static_cast< std::string >( id.id ) )
{
return static_cast< std::string >( id.id );
}
template< class Id >
inline static auto to_string ( const GridId< Id > &id, PriorityTag< 1 > )
-> decltype( to_string( id.id ) )
{
return to_string( id.id );
}
template< class Id >
inline static std::string to_string ( const GridId< Id > &id, PriorityTag< 0 > )
{
std::ostringstream s;
s << id.id;
return s.str();
}
template< class Id >
inline static std::string to_string ( const GridId< Id > &id )
{
return to_string( id, PriorityTag< 42 >() );
}
// idSetSubId
// ----------
template< class IdSet, class Entity >
inline static typename IdSet::IdType idSetSubId ( const IdSet &idSet, const Entity &entity, int i, int c )
{
if( (c < Entity::codimension) || (c > Entity::dimension) )
throw pybind11::value_error( "Invalid codimension: " + std::to_string( c ) + " (must be in [" + std::to_string( Entity::codimension ) + ", " + std::to_string( Entity::dimension ) + "])" );
const int size = entity.subEntities( c );
if( (i < 0) || (i >= size) )
throw pybind11::value_error( "Invalid index: " + std::to_string( i ) + " (must be in [0, " + std::to_string( size ) + "))." );
return idSet.subId( entity, i, c );
}
// registerSubId
// -------------
template< class Entity, class IdSet, class... options >
inline static auto registerSubId ( pybind11::class_< IdSet, options... > cls, PriorityTag< 1 > )
-> std::enable_if_t< Entity::codimension == 0 >
{
using pybind11::operator""_a;
pybind11::options opts;
opts.disable_function_signatures();
cls.def( "subId", [] ( const IdSet &self, const Entity &entity, int i, int codim ) {
return detail::idSetSubId( self, entity, i, codim );
} );
cls.def( "subId", [] ( const IdSet &self, const Entity &entity, std::tuple< int, int > e ) {
return detail::idSetSubId( self, entity, std::get< 0 >( e ), std::get< 1 >( e ) );
} );
cls.def( "subIds", [] ( const IdSet &self, const Entity &entity, int c ) {
if( (c < Entity::codimension) || (c > Entity::dimension) )
throw pybind11::value_error( "Invalid codimension: " + std::to_string( c ) + " (must be in [" + std::to_string( Entity::codimension ) + ", " + std::to_string( Entity::dimension ) + "])" );
const int size = entity.subEntities( c );
pybind11::tuple subIds( size );
for( int i = 0; i < size; ++i )
subIds[ i ] = pybind11::cast( self.subId( entity, i, c ) );
return subIds;
}, "entity"_a, "codim"_a );
}
template< class Entity, class IdSet, class... options >
inline static void registerSubId ( pybind11::class_< IdSet, options... >, PriorityTag< 0 > )
{}
template< class Entity, class IdSet, class... options >
inline static void registerSubId ( pybind11::class_< IdSet, options... > cls )
{
return registerSubId< Entity >( cls, PriorityTag< 42 >() );
}
} // namespace detail
// registerGridIdSet
// -----------------
template< class Grid, class IdSet, class... options >
inline static void registerGridIdSet ( pybind11::handle scope, pybind11::class_< IdSet, options... > cls )
{
typedef detail::GridId< typename IdSet::IdType > Id;
auto id = insertClass< Id >( cls, "Id", GenerateTypeName( "Dune::Python::detail::GridId", GenerateTypeName( cls, "IdType" ) ) );
if( id.second )
{
pybind11::options opts;
opts.disable_function_signatures();
id.first.def( pybind11::self == pybind11::self );
id.first.def( pybind11::self != pybind11::self );
id.first.def( pybind11::self < pybind11::self );
id.first.def( pybind11::self <= pybind11::self );
id.first.def( pybind11::self > pybind11::self );
id.first.def( pybind11::self >= pybind11::self );
std::hash< typename IdSet::IdType > hash;
id.first.def( "__hash__", [ hash ] ( const Id &self ) { return pybind11::int_( hash( self.id ) ); } );
id.first.def( "__str__", [] ( const Id &self ) { return to_string( self ); } );
}
Hybrid::forEach( std::make_integer_sequence< int, Grid::dimension+1 >(), [ &cls ] ( auto codim ) {
typedef typename Grid::template Codim< codim >::Entity Entity;
using pybind11::operator""_a;
pybind11::options opts;
opts.disable_function_signatures();
cls.def( "id", [] ( const IdSet &self, const Entity &entity ) { return self.id( entity ); }, "entity"_a );
detail::registerSubId< Entity >( cls );
} );
}
// registerGridIdSets
// ------------------
template< class Grid, class... options >
inline static void registerHierarchicalGridIdSets ( pybind11::class_< Grid, options... > cls )
{
pybind11::options opts;
opts.disable_function_signatures();
typedef typename Grid::LocalIdSet LocalIdSet;
auto local = insertClass< LocalIdSet >( cls, "LocalIdSet", GenerateTypeName( cls, "LocalIdSet" ) );
if( local.second )
registerGridIdSet< Grid >( cls, local.first );
cls.def_property_readonly( "localIdSet", [] ( const Grid &self ) -> const LocalIdSet & { return self.localIdSet(); }, pybind11::keep_alive< 0, 1 >() );
typedef typename Grid::GlobalIdSet GlobalIdSet;
auto global = insertClass< GlobalIdSet >( cls, "GlobalIdSet", GenerateTypeName( cls, "GlobalIdSet" ) );
if( global.second )
registerGridIdSet< Grid >( cls, global.first );
cls.def_property_readonly( "globalIdSet", [] ( const Grid &self ) -> const GlobalIdSet & { return self.globalIdSet(); }, pybind11::keep_alive< 0, 1 >() );
}
} // namespace Python
} // namespace Dune
#endif // #ifndef DUNE_PYTHON_GRID_IDSET_HH
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