IMeshMaterialVariable.cc

// -*- tab-width: 2; indent-tabs-mode: nil; coding: utf-8-with-signature -*-
//-----------------------------------------------------------------------------
// Copyright 2000-2026 CEA (www.cea.fr) IFPEN (www.ifpenergiesnouvelles.com)
// See the top-level COPYRIGHT file for details.
// SPDX-License-Identifier: Apache-2.0
//-----------------------------------------------------------------------------
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/* IMeshMaterialVariable.cc                                    (C) 2000-2025 */
/*                                                                           */
/* Material variable interface.                                              */
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#include "arcane/core/materials/IMeshMaterialVariable.h"
 
#include "arcane/utils/FatalErrorException.h"
 
#include "arcane/core/materials/IScalarMeshMaterialVariable.h"
#include "arcane/core/materials/IArrayMeshMaterialVariable.h"
#include "arcane/core/materials/MaterialVariableTypeInfo.h"
#include "arcane/core/materials/MaterialVariableBuildInfo.h"
#include "arcane/core/materials/IMeshMaterialMng.h"
#include "arcane/core/materials/IMeshMaterialVariableFactoryMng.h"
 
#include "arcane/core/VariableDataTypeTraits.h"
#include "arcane/core/IVariable.h"
 
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namespace Arcane::Materials
{
 
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template <typename TrueType> MaterialVariableTypeInfo
MeshMaterialVariableBuildTraits<TrueType>::
_buildVarTypeInfo(MatVarSpace space)
{
  using ItemType = typename TrueType::ItemTypeType;
  using DataType = typename TrueType::DataTypeType;
  int dim = TrueType::dimension();
  eItemKind ik = ItemTraitsT<ItemType>::kind();
  eDataType dt = VariableDataTypeTraitsT<DataType>::type();
  return MaterialVariableTypeInfo(ik, dt, dim, space);
}
 
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/*!
 * \brief Returns a variable associated with a constituent.
 *
 * Returns the constituent variable based on the information provided by
 * \a v and \a mvs. If the variable does not yet exist, it is created.
 */
template <typename TrueType> TrueType*
MeshMaterialVariableBuildTraits<TrueType>::
getVariableReference(const MaterialVariableBuildInfo& v, MatVarSpace mvs)
{
  MaterialVariableTypeInfo x = _buildVarTypeInfo(mvs);
 
  MeshHandle mesh_handle = v.meshHandle();
  if (mesh_handle.isNull())
    ARCANE_FATAL("No mesh handle for material variable");
 
  // If the material manager does not yet exist, we create it.
  IMeshMaterialMng* mat_mng = v.materialMng();
  // TODO: check if a lock is necessary
  if (!mat_mng)
    mat_mng = IMeshMaterialMng::getReference(mesh_handle, true);
 
  IMeshMaterialVariableFactoryMng* vm = mat_mng->variableFactoryMng();
  IMeshMaterialVariable* var = vm->createVariable(x.fullName(), v);
 
  auto* true_var = dynamic_cast<TrueType*>(var);
  ARCANE_CHECK_POINTER(true_var);
  return true_var;
}
 
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/*!
 * \brief Returns the concrete type of a constituent variable.
 *
 * Converts \a var to the \a TrueType. If this is not possible, it throws
 * an exception.
 */
template <typename TrueType> TrueType*
MeshMaterialVariableBuildTraits<TrueType>::
getVariableReference(IMeshMaterialVariable* var)
{
  ARCANE_CHECK_POINTER(var);
  auto* true_var = dynamic_cast<TrueType*>(var);
  if (!true_var)
    ARCANE_FATAL("Can not convert variable '{0}' in the template type of this class", var->globalVariable()->fullName());
  return true_var;
}
 
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#define ARCANE_INSTANTIATE_MAT(type) \
  template class ARCANE_TEMPLATE_EXPORT MeshMaterialVariableBuildTraits<IScalarMeshMaterialVariable<Cell, type>>; \
  template class ARCANE_TEMPLATE_EXPORT MeshMaterialVariableBuildTraits<IArrayMeshMaterialVariable<Cell, type>>
 
ARCANE_INSTANTIATE_MAT(Byte);
ARCANE_INSTANTIATE_MAT(Int8);
ARCANE_INSTANTIATE_MAT(Int16);
ARCANE_INSTANTIATE_MAT(Int32);
ARCANE_INSTANTIATE_MAT(Int64);
ARCANE_INSTANTIATE_MAT(BFloat16);
ARCANE_INSTANTIATE_MAT(Float16);
ARCANE_INSTANTIATE_MAT(Float32);
ARCANE_INSTANTIATE_MAT(Real);
ARCANE_INSTANTIATE_MAT(Real2);
ARCANE_INSTANTIATE_MAT(Real3);
ARCANE_INSTANTIATE_MAT(Real2x2);
ARCANE_INSTANTIATE_MAT(Real3x3);
 
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} // End namespace Arcane::Materials
 
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