This class is used to extract a value from an argument.
It is used because we need a special implementation to deal with std::string and making a specialiced function puts it in the T segment, thus generating link errors. Having a specialiced class makes the symbols weak. This is not pretty but I don't know how to make it work any other way.
Definition at line 52 of file ValueArg.h.
#include <mrpt/otherlibs/tclap/ValueArg.h>
Private Member Functions | |
ValueExtractor (T &value) | |
Constructor. More... | |
int | extractValue (const std::string &val) |
Method that will attempt to parse the input stream for a value of type T. More... | |
Private Attributes | |
T & | _value |
Reference to the value where the result of the extraction will be put. More... | |
Friends | |
class | ValueArg< T > |
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inlineprivate |
Constructor.
value | - Where the value extracted will be put. |
Definition at line 71 of file ValueArg.h.
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inlineprivate |
Method that will attempt to parse the input stream for a value of type T.
val | - Where the value parsed will be put. |
Definition at line 78 of file ValueArg.h.
References TCLAP::VALUE_ARG_HELPER::EXTRACT_FAILURE, and TCLAP::VALUE_ARG_HELPER::EXTRACT_TOO_MANY.
Referenced by TCLAP::ValueArg< T >::_extractValue().
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friend |
Definition at line 57 of file ValueArg.h.
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private |
Reference to the value where the result of the extraction will be put.
Definition at line 65 of file ValueArg.h.
Referenced by TCLAP::VALUE_ARG_HELPER::ValueExtractor< std::string >::extractValue().
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