Changeset - r390:53c5277ba294
« 389:660db4
391:624e67 »
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alpar (Alpar Juttner)
alpar@cs.elte.hu
Get rid of exceptions in Preflow
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1 file changed with 4 insertions and 14 deletions:
lemon/preflow.h
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lemon/preflow.h
Ignore white space 24 line context
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@@ -10,25 +10,24 @@
10 10 
 * provided that this copyright notice appears in all copies. For
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 * precise terms see the accompanying LICENSE file.
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 *
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 * This software is provided "AS IS" with no warranty of any kind,
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 * express or implied, and with no claim as to its suitability for any
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 * purpose.
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 *
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 */
18 18 

			




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#ifndef LEMON_PREFLOW_H


			




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#define LEMON_PREFLOW_H


			




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#include <lemon/error.h>


			




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#include <lemon/tolerance.h>


			




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#include <lemon/elevator.h>


			




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/// \file


			




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/// \ingroup max_flow


			




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/// \brief Implementation of the preflow algorithm.


			




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namespace lemon {


			




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  /// \brief Default traits class of Preflow class.


			




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  ///


			




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  /// Default traits class of Preflow class.


			




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@@ -123,35 +122,24 @@


			




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  class Preflow {


			




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  public:


			




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    typedef _Traits Traits;


			




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    typedef typename Traits::Digraph Digraph;


			




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    typedef typename Traits::CapacityMap CapacityMap;


			




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    typedef typename Traits::Value Value;


			




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    typedef typename Traits::FlowMap FlowMap;


			




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    typedef typename Traits::Elevator Elevator;


			




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    typedef typename Traits::Tolerance Tolerance;


			




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    /// \brief \ref Exception for uninitialized parameters.


			




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    ///


			




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    /// This error represents problems in the initialization


			




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    /// of the parameters of the algorithms.


			




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    class UninitializedParameter : public lemon::Exception {


			




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    public:


			




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      virtual const char* what() const throw() {


			




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        return "lemon::Preflow::UninitializedParameter";


			




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      }


			




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    };


			




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  private:


			




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    TEMPLATE_DIGRAPH_TYPEDEFS(Digraph);


			




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    const Digraph& _graph;


			




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    const CapacityMap* _capacity;


			




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    int _node_num;


			




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    Node _source, _target;


			




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    FlowMap* _flow;


			




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@@ -199,45 +187,47 @@


			




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  public:


			




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    typedef Preflow Create;


			




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    ///\name Named template parameters


			




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    ///@{


			




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    template <typename _FlowMap>


			




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    struct DefFlowMapTraits : public Traits {


			




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      typedef _FlowMap FlowMap;


			




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      static FlowMap *createFlowMap(const Digraph&) {


			




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        throw UninitializedParameter();


			




	
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        LEMON_ASSERT(false, "FlowMap is not initialized");


			




	
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        return 0; // ignore warnings


			




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      }


			




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    };


			




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    /// \brief \ref named-templ-param "Named parameter" for setting


			




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    /// FlowMap type


			




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    ///


			




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    /// \ref named-templ-param "Named parameter" for setting FlowMap


			




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    /// type


			




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    template <typename _FlowMap>


			




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    struct DefFlowMap


			




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      : public Preflow<Digraph, CapacityMap, DefFlowMapTraits<_FlowMap> > {


			




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      typedef Preflow<Digraph, CapacityMap,


			




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                      DefFlowMapTraits<_FlowMap> > Create;


			




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    };


			




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    template <typename _Elevator>


			




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    struct DefElevatorTraits : public Traits {


			




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      typedef _Elevator Elevator;


			




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      static Elevator *createElevator(const Digraph&, int) {


			




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        throw UninitializedParameter();


			




	
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        LEMON_ASSERT(false, "Elevator is not initialized");


			




	
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        return 0; // ignore warnings


			




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      }


			




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    };


			




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    /// \brief \ref named-templ-param "Named parameter" for setting


			




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    /// Elevator type


			




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    ///


			




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    /// \ref named-templ-param "Named parameter" for setting Elevator


			




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    /// type


			




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    template <typename _Elevator>


			




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    struct DefElevator


			




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      : public Preflow<Digraph, CapacityMap, DefElevatorTraits<_Elevator> > {


			




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      typedef Preflow<Digraph, CapacityMap,


			




        

    






    
    



    


    

     
    
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