6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-04 02:24:29 +00:00
Code Issues Projects Releases Wiki Activity

Add a Python-like join function to merge a list of strings with a

Browse Source 
separator between each two elements.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189846 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Joerg Sonnenberger
2013-09-03 20:43:54 +00:00
parent b81d7a8912
commit f57a80f494
2 changed files with 70 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
include/llvm/ADT/StringExtras.h
View File

@ -14,6 +14,7 @@
#ifndef LLVM_ADT_STRINGEXTRAS_H
#define LLVM_ADT_STRINGEXTRAS_H
#include <iterator>
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/DataTypes.h"
@ -159,6 +160,48 @@ static inline StringRef getOrdinalSuffix(unsigned Val) {
}
}
template <typename IteratorT>
inline std::string join_impl(IteratorT Begin, IteratorT End,
StringRef Separator, std::input_iterator_tag) {
std::string S;
if (Begin == End)
return S;
S += (*Begin);
while (++Begin != End) {
S += Separator;
S += (*Begin);
}
return S;
}
template <typename IteratorT>
inline std::string join_impl(IteratorT Begin, IteratorT End,
StringRef Separator, std::forward_iterator_tag) {
std::string S;
if (Begin == End)
return S;
size_t Len = (std::distance(Begin, End) - 1) * Separator.size();
for (IteratorT I = Begin; I != End; ++I)
Len += (*Begin).size();
S.reserve(Len);
S += (*Begin);
while (++Begin != End) {
S += Separator;
S += (*Begin);
}
return S;
}
/// Joins the strings in the range [Begin, End), adding Separator between
/// the elements.
template <typename IteratorT>
inline std::string join(IteratorT Begin, IteratorT End, StringRef Separator) {
typedef typename std::iterator_traits<IteratorT>::iterator_category tag;
return join_impl(Begin, End, Separator, tag());
}
} // End llvm namespace
#endif