Line data    Source code

       1             : /****************************************************************************/
       2             : // Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.dev/sumo
       3             : // Copyright (C) 2001-2024 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             : };