Line data    Source code

       1              : /****************************************************************************/
       2              : // Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.dev/sumo
       3              : // Copyright (C) 2001-2025 German Aerospace Center (DLR) and others.
       4              : // This program and the accompanying materials are made available under the
       5              : // terms of the Eclipse Public License 2.0 which is available at
       6              : // https://www.eclipse.org/legal/epl-2.0/
       7              : // This Source Code may also be made available under the following Secondary
       8              : // Licenses when the conditions for such availability set forth in the Eclipse
       9              : // Public License 2.0 are satisfied: GNU General Public License, version 2
      10              : // or later which is available at
      11              : // https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
      12              : // SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
      13              : /****************************************************************************/
      14              : /// @file    CastingFunctionBinding.h
      15              : /// @author  Daniel Krajzewicz
      16              : /// @author  Christian Roessel
      17              : /// @author  Sascha Krieg
      18              : /// @date    Fri, 29.04.2005
      19              : ///
      20              : //  Function type template
      21              : /****************************************************************************/
      22              : #pragma once
      23              : #include <config.h>
      24              : 
      25              : #include <utils/common/ValueSource.h>
      26              : 
      27              : 
      28              : // ===========================================================================
      29              : // class definitions
      30              : // ===========================================================================
      31              : /**
      32              :  * @class CastingFunctionBinding
      33              :  */
      34              : template< class T, typename R, typename O  >
      35              : class CastingFunctionBinding : public ValueSource<R> {
      36              : public:
      37              :     /// Type of the function to execute.
      38              :     typedef O(T::* Operation)() const;
      39              : 
      40            0 :     CastingFunctionBinding(T* source, Operation operation, const R scale = 1) :
      41            0 :         mySource(source),
      42            0 :         myOperation(operation),
      43            0 :         myScale(scale) {}
      44              : 
      45              :     /// Destructor.
      46            0 :     ~CastingFunctionBinding() {}
      47              : 
      48            0 :     R getValue() const {
      49            0 :         return myScale * (R)(mySource->*myOperation)();
      50              :     }
      51              : 
      52            0 :     ValueSource<R>* copy() const {
      53            0 :         return new CastingFunctionBinding<T, R, O>(mySource, myOperation, myScale);
      54              :     }
      55              : 
      56            0 :     ValueSource<double>* makedoubleReturningCopy() const {
      57            0 :         return new CastingFunctionBinding<T, double, O>(mySource, myOperation, myScale);
      58              :     }
      59              : 
      60              : private:
      61              :     /// The object the action is directed to.
      62              :     T* mySource;
      63              : 
      64              :     /// The object's operation to perform.
      65              :     Operation myOperation;
      66              : 
      67              :     /// The scale to apply.
      68              :     const R myScale;
      69              : 
      70              : private:
      71              :     /// @brief invalidated assignment operator
      72              :     CastingFunctionBinding<T, R, O>& operator=(const CastingFunctionBinding<T, R, O>&);
      73              : 
      74              : };