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#pragma once
namespace storm {
/**
* C++ helpers for joining containers in storm into a string. Works with all containers that
* provide iterators. Only uses the value. Keys are ignored.
*/
template <class T>
void join(StrBuf *to, T *src, const wchar *space) {
typename T::Iter begin = src->begin();
typename T::Iter end = src->end();
if (begin == end)
return;
*to << begin.v();
++begin;
for (; begin != end; ++begin) {
*to << space << begin.v();
}
}
/**
* Allow using *buf << join(a, b) << ...
*/
template <class T>
struct Join {
T *src;
const wchar *space;
};
template <class T>
Join<T> join(T *src, const wchar *space) {
Join<T> r = { src, space };
return r;
}
template <class T>
StrBuf &operator <<(StrBuf &to, const Join<T> &src) {
join(&to, src.src, src.space);
return to;
}
}
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