<commit_before>/*
 * Distributed under the OSI-approved Apache License, Version 2.0.  See
 * accompanying file Copyright.txt for details.
 *
 * ADIOS.h : public ADIOS class using PIMPL for C++11 bindings
 *
 *  Created on: Jun 4, 2018
 *      Author: <NAME>
 */

#ifndef ADIOS2_BINDINGS_CXX11_CXX11_ADIOS_H_
#define ADIOS2_BINDINGS_CXX11_CXX11_ADIOS_H_

#include <functional>
#include <memory>
#include <string>

#include "IO.h"
#include "Operator.h"

#ifdef ADIOS2_HAVE_MPI
#include <mpi.h>
#endif

#include "adios2/ADIOSMacros.h"
#include "adios2/ADIOSTypes.h"

namespace adios2
{

/// \cond EXCLUDE_FROM_DOXYGEN
// forward declare
namespace core
{
class ADIOS; // private implementation
}
/// \endcond

class ADIOS
{

public:
#ifdef ADIOS2_HAVE_MPI
    /**
     * Starting point for MPI apps. Creates an ADIOS object
     * @param comm defines domain scope from application
     * @param debugMode true: extra user-input debugging information, false: run
     * without checking user-input (stable workflows)
     * @exception std::invalid_argument in debugMode = true if user input is
     * incorrect
     */
    ADIOS(MPI_Comm comm, const bool debugMode = true);

    /**
     * Starting point for MPI apps. Creates an ADIOS object allowing a
     * runtime config file.
     * @param configFile runtime config file
     * @param comm defines domain scope from application
     * @param debugMode true: extra user-input debugging information, false:
     * run without checking user-input (stable workflows)
     * @exception std::invalid_argument in debugMode = true if user input is
     * incorrect
     */
    ADIOS(const std::string &configFile = "", MPI_Comm comm = MPI_COMM_SELF,
          const bool debugMode = true);
#else

    /**
     * Starting point for non-MPI serial apps. Creates an ADIOS object allowing
     * a runtime config file.
     * @param configFile runtime config file
     * @param debugMode true: extra user-input debugging information, false: run
     * without checking user-input (stable workflows)
     * @exception std::invalid_argument in debugMode = true if user input is
     * incorrect
     */
    ADIOS(const std::string &configFile, const bool debugMode = true);

    /**
     * Starting point for non-MPI apps. Creates an ADIOS object
     * @param debugMode true: extra user-input debugging information, false: run
     * without checking user-input (stable workflows)
     * @exception std::invalid_argument in debugMode = true if user input is
     * incorrect
     */
    ADIOS(const bool debugMode = true);
#endif

    /** object inspection true: valid object, false: invalid object */
    explicit operator bool() const noexcept;

    /**
     * DELETED Copy Constructor. ADIOS is the only object that manages its own
     * memory. Create a separate object for independent tasks */
    ADIOS(const ADIOS &) = delete;

    /** Using RAII STL containers only */
    ~ADIOS() = default;

    /**
     * Declares a new IO class object
     * @param name unique IO name identifier within current ADIOS object
     * @return reference to newly created IO object inside current ADIOS
     * object
     * @exception std::invalid_argument if IO with unique name is already
     * declared, in ADIOS debug mode only
     */
    IO DeclareIO(const std::string name);

    /**
     * Retrieve an existing IO object previously created with DeclareIO.
     * @param name IO unique identifier key in current ADIOS object
     * @return if IO exists returns a reference to existing IO object inside
     * ADIOS, else throws an exception. IO objects can't be invalid.
     * @exception std::invalid_argument if IO was not created with<commit_msg>adios2: consistent copy/move constructors and assignment<commit_after>/*
 * Distributed under the OSI-approved Apache License, Version 2.0.  See
 * accompanying file Copyright.txt for details.
 *
 * ADIOS.h : public ADIOS class using PIMPL for C++11 bindings
 *
 *  Created on: Jun 4, 2018
 *      Author: <NAME>
 */

#ifndef ADIOS2_BINDINGS_CXX11_CXX11_ADIOS_H_
#define ADIOS2_BINDINGS_CXX11_CXX11_ADIOS_H_

#include <functional>
#include <memory>
#include <string>

#include "IO.h"
#include "Operator.h"

#ifdef ADIOS2_HAVE_MPI
#include <mpi.h>
#endif

#include "adios2/ADIOSMacros.h"
#include "adios2/ADIOSTypes.h"

namespace adios2
{

/// \cond EXCLUDE_FROM_DOXYGEN
// forward declare
namespace core
{
class ADIOS; // private implementation
}
/// \endcond

class ADIOS
{

public:
#ifdef ADIOS2_HAVE_MPI
    /**
     * Starting point for MPI apps. Creates an ADIOS object
     * @param comm defines domain scope from application
     * @param debugMode true: extra user-input debugging information, false: run
     * without checking user-input (stable workflows)
     * @exception std::invalid_argument in debugMode = true if user input is
     * incorrect
     */
    ADIOS(MPI_Comm comm, const bool debugMode = true);

    /**
     * Starting point for MPI apps. Creates an ADIOS object allowing a
     * runtime config file.
     * @param configFile runtime config file
     * @param comm defines domain scope from application
     * @param debugMode true: extra user-input debugging information, false:
     * run without checking user-input (stable workflows)
     * @exception std::invalid_argument in debugMode = true if user input is
     * incorrect
     */
    ADIOS(const std::string &configFile = "", MPI_Comm comm = MPI_COMM_SELF,
          const bool debugMode = true);
#else

    /**
     * Starting point for non-MPI serial apps. Creates an ADIOS object allowing
     * a runtime config file.
     * @param configFile runtime config file
     * @param debugMode true: extra user-input debugging information, false: run
     * without checking user-input (stable workflows)
     * @exception std::invalid_argument in debugMode = true if user input is
     * incorrect
     */
    ADIOS(const std::string &configFile, const bool debugMode = true);

    /**
     * Starting point for non-MPI apps. Creates an ADIOS object
     * @param debugMode true: extra user-input debugging information, false: run
     * without checking user-input (stable workflows)
     * @exception std::invalid_argument in debugMode = true if user input is
     * incorrect
     */
    ADIOS(const bool debugMode = true);
#endif

    /** object inspection true: valid object, false: invalid object */
    explicit operator bool() const noexcept;

    /**
     * DELETED Copy Constructor. ADIOS is the only object that manages its own
     * memory. Create a separate object for independent tasks */
    ADIOS(const ADIOS &) = delete;

    /**
     * default move constructor exists to allow for
     * auto ad = ADIOS(...) initialization
     */
    ADIOS(ADIOS &&) = default;

    /** Using RAII STL containers only */
    ~ADIOS() = default;

    /**
     * copy assignment is forbidden for the same reason as copy constructor
     */
    ADIOS& operator=(const ADIOS &) = delete;

    /**
     * move assignment is allowed, though, to be consistent with move constructor
     */
    ADIOS& operator=(ADIOS &&) = default;

    /**
     * Declares a new IO class object
     * @param name unique IO name identifier within current ADIOS object
     * @return reference to newly created IO object inside current ADIOS
     * object
     * @exception std::invalid_argument if IO with unique name is already
     * declared, in ADIOS debug mode only
     */
    IO DeclareIO(const std::string name);

    /**
     * Retrieve an existing IO object previously created with DeclareIO.
     * @param name IO unique identifier key in current ADIOS object
     * @return if IO exists returns a reference to existing IO object inside
     * ADIOS, else throws an exception. IO objects can't be invalid.
     * @exception std::invalid_argument if IO was not created with
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