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// ---------------------------------------------------------------------
//
// Copyright (C) 2004 - 2017 by the deal.II authors
//
// This file is part of the deal.II library.
//
// The deal.II library is free software; you can use it, 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 2.1 of the License, or (at your option) any later version.
// The full text of the license can be found in the file LICENSE at
// the top level of the deal.II distribution.
//
// ---------------------------------------------------------------------

#ifndef dealii__lac_exceptions_h
#define dealii__lac_exceptions_h

#include <deal.II/base/exceptions.h>

DEAL_II_NAMESPACE_OPEN

namespace LACExceptions
{
  /**
   * @addtogroup Exceptions
   */
  //@{

  /**
   * This function only works for quadratic matrices.
   */
  DeclExceptionMsg (ExcNotQuadratic,
                    "This function only works for quadratic objects!");

  /**
   * The operation cannot be finished since the matrix is singular.
   */
  DeclException0 (ExcSingular);

  /**
   * Block indices of two block objects are different.
   */
  DeclException0 (ExcDifferentBlockIndices);

  /**
   * Exception thrown when a PETSc function reports an error. If possible,
   * this exception uses the message provided by
   * <code>PetscErrorMessage</code> to print a description of the error.
   *
   * @note For backwards compatibility this is defined whether or not deal.II
   * is compiled with PETSc.
   */
  class ExcPETScError : public dealii::ExceptionBase
  {
  public:
    ExcPETScError (const int error_code);

    virtual void print_info (std::ostream &out) const;

    const int error_code;
  };

  /**
   * An error of a Trilinos function was encountered. Check the Trilinos
   * documentation for details.
   */
  DeclException1 (ExcTrilinosError,
                  int,
                  << "An error with error number " << arg1
                  << " occurred while calling a Trilinos function");

  //@}
}


using namespace LACExceptions;


DEAL_II_NAMESPACE_CLOSE

#endif