Repalce header guards in API with pragma once

This commit replaces all header guards in API with #pragma once

Framework/API/inc/MantidAPI/ADSValidator.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_API_ADSVALIDATOR_H_
-#define MANTID_API_ADSVALIDATOR_H_
+#pragma once
 
 //----------------------------------------------------------------------
 // Includes
@@ -59,4 +58,3 @@ private:
 } // namespace API
 } // namespace Mantid
 
-#endif /* MANTID_API_ADSVALIDATOR_H_ */
\ No newline at end of file

Framework/API/inc/MantidAPI/AlgoTimeRegister.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_API_ALGOTIMEREGISTER_H_
-#define MANTID_API_ALGOTIMEREGISTER_H_
+#pragma once
 
 #include <mutex>
 #include <thread>
@@ -59,4 +58,3 @@ private:
 } // namespace Instrumentation
 } // namespace Mantid
 
-#endif /* MANTID_API_ALGOTIMEREGISTER_H_ */
\ No newline at end of file

Framework/API/inc/MantidAPI/Algorithm.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_API_ALGORITHM_H_
-#define MANTID_API_ALGORITHM_H_
+#pragma once
 
 #include <atomic>
 
@@ -522,4 +521,3 @@ using Algorithm_sptr = boost::shared_ptr<Algorithm>;
       (Mantid::API::AlgorithmFactory::Instance().subscribe<classname>()), 0)); \
   }
 
-#endif /*MANTID_API_ALGORITHM_H_*/

Framework/API/inc/MantidAPI/AlgorithmFactory.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_API_ALGORITHMFACTORY_H_
-#define MANTID_API_ALGORITHMFACTORY_H_
+#pragma once
 
 //----------------------------------------------------------------------
 // Includes
@@ -171,4 +170,3 @@ EXTERN_MANTID_API template class MANTID_API_DLL
 }
 } // namespace Mantid
 
-#endif /*MANTID_API_ALGORITHMFACTORY_H_*/

Framework/API/inc/MantidAPI/AlgorithmFactoryObserver.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_KERNEL_ALGORITHMFACTORYOBSERVER_H_
-#define MANTID_KERNEL_ALGORITHMFACTORYOBSERVER_H_
+#pragma once
 
 #include "MantidAPI/AlgorithmFactory.h"
 #include <Poco/NObserver.h>
@@ -53,4 +52,3 @@ private:
 } // namespace API
 } // namespace Mantid
 
-#endif /*MANTID_KERNEL_ALGORITHMFACTORYOBSERVER_H_*/
\ No newline at end of file

Framework/API/inc/MantidAPI/AlgorithmHasProperty.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_API_ALGORITHMHASPROPERTY_H_
-#define MANTID_API_ALGORITHMHASPROPERTY_H_
+#pragma once
 
 #include "MantidAPI/DllConfig.h"
 #include "MantidKernel/TypedValidator.h"
@@ -41,4 +40,3 @@ private:
 } // namespace API
 } // namespace Mantid
 
-#endif /* MANTID_API_ALGORITHMHASPROPERTY_H_ */

Framework/API/inc/MantidAPI/AlgorithmHistory.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_API_ALGORITHMHISTORY_H_
-#define MANTID_API_ALGORITHMHISTORY_H_
+#pragma once
 
 //----------------------------------------------------------------------
 // Includes
@@ -152,4 +151,3 @@ MANTID_API_DLL std::ostream &operator<<(std::ostream &,
 } // namespace API
 } // namespace Mantid
 
-#endif /*MANTID_API_ALGORITHMHISTORY_H_*/

Framework/API/inc/MantidAPI/AlgorithmManager.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_API_ALGORITHMMANAGER_H_
-#define MANTID_API_ALGORITHMMANAGER_H_
+#pragma once
 
 //----------------------------------------------------------------------
 // Includes
@@ -101,4 +100,3 @@ EXTERN_MANTID_API template class MANTID_API_DLL
 }
 } // namespace Mantid
 
-#endif /* MANTID_API_ALGORITHMMANAGER_H_ */

Framework/API/inc/MantidAPI/AlgorithmObserver.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_API_ALGORITHMOBSERVER_H_
-#define MANTID_API_ALGORITHMOBSERVER_H_
+#pragma once
 
 //----------------------------------------------------------------------
 // Includes
@@ -76,4 +75,3 @@ private:
 } // namespace API
 } // namespace Mantid
 
-#endif /*MANTID_API_ALGORITHMOBSERVER_H_*/

Framework/API/inc/MantidAPI/AlgorithmProperty.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_API_ALGORITHMPROPERTY_H_
-#define MANTID_API_ALGORITHMPROPERTY_H_
+#pragma once
 
 #include "MantidAPI/DllConfig.h"
 #include "MantidKernel/NullValidator.h"
@@ -85,5 +84,3 @@ private:
 
 } // namespace API
 } // namespace Mantid
-
-#endif /* MANTID_API_ALGORITHMPROPERTY_H_ */

Framework/API/inc/MantidAPI/AlgorithmProxy.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_API_ALGORITHMPROXY_H_
-#define MANTID_API_ALGORITHMPROXY_H_
+#pragma once
 
 //----------------------------------------------------------------------
 // Includes
@@ -198,5 +197,3 @@ private:
 
 } // namespace API
 } // namespace Mantid
-
-#endif /*MANTID_API_ALGORITHMPROXY_H_*/

Framework/API/inc/MantidAPI/AnalysisDataService.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_KERNEL_ANALYSISDATASERVICE_H_
-#define MANTID_KERNEL_ANALYSISDATASERVICE_H_
+#pragma once
 
 //----------------------------------------------------------------------
 // Includes
@@ -231,4 +230,3 @@ EXTERN_MANTID_API template class MANTID_API_DLL
 }
 } // namespace Mantid
 
-#endif /*MANTID_KERNEL_ANALYSISDATASERVICE_H_*/

Framework/API/inc/MantidAPI/AnalysisDataServiceObserver.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_KERNEL_ANALYSISDATASERVICEOBSERVER_H_
-#define MANTID_KERNEL_ANALYSISDATASERVICEOBSERVER_H_
+#pragma once
 
 #include "MantidAPI/AnalysisDataService.h"
 #include "MantidAPI/DllConfig.h"
@@ -137,4 +136,3 @@ private:
 } // namespace API
 } // namespace Mantid
 
-#endif /*MANTID_KERNEL_ANALYSISDATASERVICEOBSERVER_H_*/
\ No newline at end of file

Framework/API/inc/MantidAPI/ArchiveSearchFactory.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_API_ARCHIVESEARCHFACTORY_H_
-#define MANTID_API_ARCHIVESEARCHFACTORY_H_
+#pragma once
 
 //----------------------------------------------------------------------
 // Includes
@@ -53,4 +52,3 @@ EXTERN_MANTID_API template class MANTID_API_DLL
 }
 } // namespace Mantid
 
-#endif // MANTID_API_ARCHIVESEARCHFACTORY_H_

Framework/API/inc/MantidAPI/Axis.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_API_AXIS_H_
-#define MANTID_API_AXIS_H_
+#pragma once
 
 #include "MantidAPI/DllConfig.h"
 #include "MantidGeometry/IDTypes.h"
@@ -105,4 +104,3 @@ private:
 } // namespace API
 } // namespace Mantid
 
-#endif /*MANTID_API_AXIS_H_*/

Framework/API/inc/MantidAPI/BinEdgeAxis.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_API_BINEDGEAXIS_H_
-#define MANTID_API_BINEDGEAXIS_H_
+#pragma once
 
 #include "MantidAPI/NumericAxis.h"
 
@@ -39,4 +38,3 @@ private:
 } // namespace API
 } // namespace Mantid
 
-#endif /* MANTID_API_BINEDGEAXIS_H_ */

Framework/API/inc/MantidAPI/BoostOptionalToAlgorithmProperty.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_API_BOOSTOPTIONALTOALGORITHMPROPERTY_H_
-#define MANTID_API_BOOSTOPTIONALTOALGORITHMPROPERTY_H_
+#pragma once
 
 #include "MantidAPI/Algorithm.h"
 #include "MantidAPI/DllConfig.h"
@@ -101,4 +100,3 @@ DLLExport boost::optional<std::string> checkForOptionalInstrumentDefault(
 } // namespace API
 } // namespace Mantid
 
-#endif // MANTID_API_BOOSTOPTIONALTOALGORITHMPROPERTY_H_

Framework/API/inc/MantidAPI/BoxController.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef BOXCONTROLLER_H_
-#define BOXCONTROLLER_H_
+#pragma once
 
 #include "MantidAPI/IBoxControllerIO.h"
 #include "MantidKernel/DiskBuffer.h"
@@ -547,4 +546,3 @@ using BoxController_const_sptr = boost::shared_ptr<const BoxController>;
 
 } // namespace Mantid
 
-#endif /* SPLITCONTROLLER_H_ */

Framework/API/inc/MantidAPI/CatalogFactory.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_API_CATALOGFACTORYIMPL_H_
-#define MANTID_API_CATALOGFACTORYIMPL_H_
+#pragma once
 
 /* Used to register Catalog classes into the factory. creates a global object in
  *an
@@ -76,4 +75,3 @@ EXTERN_MANTID_API template class MANTID_API_DLL
 }
 } // namespace Mantid
 
-#endif /*MANTID_API_CATALOGFACTORYIMPL_H_*/

Framework/API/inc/MantidAPI/CatalogManager.h

@@ -4,8 +4,7 @@
 //     NScD Oak Ridge National Laboratory, European Spallation Source
 //     & Institut Laue - Langevin
 // SPDX - License - Identifier: GPL - 3.0 +
-#ifndef MANTID_ICAT_CATALOGMANAGERIMPL_H_
-#define MANTID_ICAT_CATALOGMANAGERIMPL_H_
+#pragma once
 
 #include "MantidAPI/ICatalog.h"
 #include "MantidKernel/SingletonHolder.h"
@@ -63,4 +62,3 @@ EXTERN_MANTID_API template class MANTID_API_DLL
     Kernel::SingletonHolder<Mantid::API::CatalogManagerImpl>;
 }
 } // namespace Mantid
-#endif /* MANTID_ICAT_CATALOGMANAGERIMPL_H_ */