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Diffstat (limited to 'tclap-1.2.1/include/tclap/OptionalUnlabeledTracker.h')
-rw-r--r-- | tclap-1.2.1/include/tclap/OptionalUnlabeledTracker.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/tclap-1.2.1/include/tclap/OptionalUnlabeledTracker.h b/tclap-1.2.1/include/tclap/OptionalUnlabeledTracker.h new file mode 100644 index 0000000..8174c5f --- /dev/null +++ b/tclap-1.2.1/include/tclap/OptionalUnlabeledTracker.h @@ -0,0 +1,62 @@ + + +/****************************************************************************** + * + * file: OptionalUnlabeledTracker.h + * + * Copyright (c) 2005, Michael E. Smoot . + * All rights reverved. + * + * See the file COPYING in the top directory of this distribution for + * more information. + * + * THE SOFTWARE IS PROVIDED _AS IS_, WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + *****************************************************************************/ + + +#ifndef TCLAP_OPTIONAL_UNLABELED_TRACKER_H +#define TCLAP_OPTIONAL_UNLABELED_TRACKER_H + +#include <string> + +namespace TCLAP { + +class OptionalUnlabeledTracker +{ + + public: + + static void check( bool req, const std::string& argName ); + + static void gotOptional() { alreadyOptionalRef() = true; } + + static bool& alreadyOptional() { return alreadyOptionalRef(); } + + private: + + static bool& alreadyOptionalRef() { static bool ct = false; return ct; } +}; + + +inline void OptionalUnlabeledTracker::check( bool req, const std::string& argName ) +{ + if ( OptionalUnlabeledTracker::alreadyOptional() ) + throw( SpecificationException( + "You can't specify ANY Unlabeled Arg following an optional Unlabeled Arg", + argName ) ); + + if ( !req ) + OptionalUnlabeledTracker::gotOptional(); +} + + +} // namespace TCLAP + +#endif |