88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
// -*- Mode: c++; c-basic-offset: 4; tab-width: 4; -*-
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/******************************************************************************
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*
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* file: ArgTraits.h
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*
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* Copyright (c) 2007, Daniel Aarno, Michael E. Smoot .
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* All rights reverved.
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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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// This is an internal tclap file, you should probably not have to
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// include this directly
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#ifndef TCLAP_ARGTRAITS_H
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#define TCLAP_ARGTRAITS_H
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namespace TCLAP {
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// We use two empty structs to get compile type specialization
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// function to work
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/**
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* A value like argument value type is a value that can be set using
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* operator>>. This is the default value type.
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*/
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struct ValueLike {
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typedef ValueLike ValueCategory;
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virtual ~ValueLike() {}
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};
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/**
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* A string like argument value type is a value that can be set using
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* operator=(string). Usefull if the value type contains spaces which
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* will be broken up into individual tokens by operator>>.
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*/
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struct StringLike {
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virtual ~StringLike() {}
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};
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/**
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* A class can inherit from this object to make it have string like
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* traits. This is a compile time thing and does not add any overhead
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* to the inherenting class.
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*/
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struct StringLikeTrait {
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typedef StringLike ValueCategory;
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virtual ~StringLikeTrait() {}
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};
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/**
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* A class can inherit from this object to make it have value like
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* traits. This is a compile time thing and does not add any overhead
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* to the inherenting class.
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*/
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struct ValueLikeTrait {
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typedef ValueLike ValueCategory;
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virtual ~ValueLikeTrait() {}
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};
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/**
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* Arg traits are used to get compile type specialization when parsing
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* argument values. Using an ArgTraits you can specify the way that
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* values gets assigned to any particular type during parsing. The two
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* supported types are StringLike and ValueLike.
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*/
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template<typename T>
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struct ArgTraits {
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typedef typename T::ValueCategory ValueCategory;
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virtual ~ArgTraits() {}
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//typedef ValueLike ValueCategory;
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};
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#endif
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} // namespace
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