mirror of
https://github.com/cuberite/TCLAP.git
synced 2025-08-04 02:06:29 -04:00
bd0440fdbd
Make all types have ValueLike traits by default. 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. Conflicts: examples/Makefile.am examples/test24.cpp tests/Makefile.am tests/runtests.sh tests/test83.out tests/test83.sh
43 lines
951 B
C++
43 lines
951 B
C++
#include "tclap/CmdLine.h"
|
|
#include <iterator>
|
|
|
|
using namespace TCLAP;
|
|
|
|
// Define a simple 3D vector type
|
|
struct Vect3D {
|
|
double v[3];
|
|
|
|
std::ostream& print(std::ostream &os) const
|
|
{
|
|
std::copy(v, v + 3, std::ostream_iterator<double>(os, " "));
|
|
return os;
|
|
}
|
|
};
|
|
|
|
// operator>> will be used to assign to the vector since the default
|
|
// is that all types are ValueLike.
|
|
std::istream &operator>>(std::istream &is, Vect3D &v)
|
|
{
|
|
if (!(is >> v.v[0] >> v.v[1] >> v.v[2]))
|
|
throw TCLAP::ArgParseException(" Argument is not a 3D vector");
|
|
|
|
return is;
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
CmdLine cmd("Command description message", ' ', "0.9");
|
|
ValueArg<Vect3D> vec("v", "vect", "vector",
|
|
true, Vect3D(), "3D vector", cmd);
|
|
|
|
try {
|
|
cmd.parse(argc, argv);
|
|
} catch(std::exception &e) {
|
|
std::cout << e.what() << std::endl;
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
vec.getValue().print(std::cout);
|
|
std::cout << std::endl;
|
|
}
|