58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
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// -*- Mode: c++; c-basic-offset: 4; tab-width: 4; -*-
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/******************************************************************************
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*
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* file: Visitor.h
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*
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* Copyright (c) 2003, Michael E. Smoot .
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* Copyright (c) 2017, Google LLC
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* All rights reserved.
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*
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* See the file COPYING in the top directory of this distribution for
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* more information.
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*
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* THE SOFTWARE IS PROVIDED _AS IS_, WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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*****************************************************************************/
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#ifndef TCLAP_VISITOR_H
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#define TCLAP_VISITOR_H
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namespace TCLAP {
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/**
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* A base class that defines the interface for visitors.
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*/
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class Visitor
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{
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public:
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/**
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* Constructor. Does nothing.
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*/
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Visitor() { }
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/**
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* Destructor. Does nothing.
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*/
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virtual ~Visitor() { }
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/**
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* This method (to implemented by children) will be
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* called when the visitor is visited.
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*/
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virtual void visit() = 0;
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};
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}
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#endif
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