diff options
Diffstat (limited to 'include/llvm/ADT/StringExtras.h')
| -rw-r--r-- | include/llvm/ADT/StringExtras.h | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/include/llvm/ADT/StringExtras.h b/include/llvm/ADT/StringExtras.h index 655d884..bf27c43 100644 --- a/include/llvm/ADT/StringExtras.h +++ b/include/llvm/ADT/StringExtras.h @@ -21,7 +21,7 @@ namespace llvm { template<typename T> class SmallVectorImpl; /// hexdigit - Return the hexadecimal character for the -/// given number \arg X (which should be less than 16). +/// given number \p X (which should be less than 16). static inline char hexdigit(unsigned X, bool LowerCase = false) { const char HexChar = LowerCase ? 'a' : 'A'; return X < 10 ? '0' + X : HexChar + X - 10; @@ -125,10 +125,29 @@ void SplitString(StringRef Source, // X*33+c -> X*33^c static inline unsigned HashString(StringRef Str, unsigned Result = 0) { for (unsigned i = 0, e = Str.size(); i != e; ++i) - Result = Result * 33 + Str[i]; + Result = Result * 33 + (unsigned char)Str[i]; return Result; } +/// Returns the English suffix for an ordinal integer (-st, -nd, -rd, -th). +static inline StringRef getOrdinalSuffix(unsigned Val) { + // It is critically important that we do this perfectly for + // user-written sequences with over 100 elements. + switch (Val % 100) { + case 11: + case 12: + case 13: + return "th"; + default: + switch (Val % 10) { + case 1: return "st"; + case 2: return "nd"; + case 3: return "rd"; + default: return "th"; + } + } +} + } // End llvm namespace #endif |
