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5d4ffbf2db
This allows new types to be added without any fuzz (no need to specify the traits) if it has operator>>. It also removes the need to manually specify the ArgTrait for all built in types (such as long, bool, char, float etc). ArgTraits now works in the following way: 1) If there exists a specialization of ArgTraits for type X, use it. 2) If no specialization exists but X has the typename X::ValueCategory, use the specialization for X::ValueCategory. 3) If neither (1) nor (2) defines the trait, use the default which is ValueLike.
63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
// -*- Mode: c++; c-basic-offset: 4; tab-width: 4; -*-
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/******************************************************************************
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*
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* file: StandardTraits.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_STANDARD_TRAITS_H
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#define TCLAP_STANDARD_TRAITS_H
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#ifdef HAVE_CONFIG_H
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#include <config.h> // To check for long long
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#endif
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// If Microsoft has already typedef'd wchar_t as an unsigned
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// short, then compiles will break because it's as if we're
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// creating ArgTraits twice for unsigned short. Thus...
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#ifdef _MSC_VER
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#ifndef _NATIVE_WCHAR_T_DEFINED
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#define TCLAP_DONT_DECLARE_WCHAR_T_ARGTRAITS
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#endif
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#endif
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namespace TCLAP {
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// Integer types (signed, unsigned and bool) and floating point types all
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// have value-like semantics.
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// Strings have string like argument traits.
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template<>
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struct ArgTraits<std::string> {
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typedef StringLike ValueCategory;
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};
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template<typename T>
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void SetString(T &dst, const std::string &src)
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{
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dst = src;
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}
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} // namespace
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#endif
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