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#ifndef FESA_ASSEMBLY_LOAD_ASSEMBLER_H_
#define FESA_ASSEMBLY_LOAD_ASSEMBLER_H_
#include "fesa/analysis/analysis_model.h"
#include "fesa/fem/dof_manager.h"
#include "fesa/loads/load.h"
#include "fesa/math/sparse_matrix.h"
#include "fesa/math/vector.h"
namespace fesa {
/// @brief Assembles semantic nodal loads in stable source order.
class LoadAssembler {
public:
/// @brief Accumulates all active CLOAD rows in full-DOF space.
/// @return A finite full load vector or a structured model failure.
static Result<Vector> AssembleFullNodalLoad(const AnalysisModel& model,
const DofManager& dofs);
/// @brief Accumulates explicitly supplied loads in their view order.
/// @param loads Non-owning loads whose contribution source orders must match
/// their view positions.
/// @return A candidate committed only after all contributions validate.
static Result<Vector> AssembleFullNodalLoad(const AnalysisModel& model,
const DofManager& dofs,
const LoadView& loads);
/// @brief Forms Ff-Kfc*dc in stable free/constrained order.
/// @note This operation neither factorizes nor invokes a solver.
static Result<Vector> EffectiveFreeRhs(const Vector& full_load,
const SparseMatrix& kfc,
const Vector& prescribed_values,
const DofManager& dofs);
};
} // namespace fesa
#endif // FESA_ASSEMBLY_LOAD_ASSEMBLER_H_