diff options
Diffstat (limited to 'llvm/include/llvm/ADT/StringExtras.h')
| -rw-r--r-- | llvm/include/llvm/ADT/StringExtras.h | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/llvm/include/llvm/ADT/StringExtras.h b/llvm/include/llvm/ADT/StringExtras.h index 912b9bb53c83..81a0954226d6 100644 --- a/llvm/include/llvm/ADT/StringExtras.h +++ b/llvm/include/llvm/ADT/StringExtras.h @@ -29,7 +29,6 @@ namespace llvm { -template<typename T> class SmallVectorImpl; class raw_ostream; /// hexdigit - Return the hexadecimal character for the @@ -166,21 +165,26 @@ inline std::string utohexstr(uint64_t X, bool LowerCase = false) { /// Convert buffer \p Input to its hexadecimal representation. /// The returned string is double the size of \p Input. -inline std::string toHex(StringRef Input, bool LowerCase = false) { - size_t Length = Input.size(); - - std::string Output; - Output.reserve(2 * Length); - for (size_t i = 0; i < Length; ++i) { - const unsigned char c = Input[i]; - Output.push_back(hexdigit(c >> 4, LowerCase)); - Output.push_back(hexdigit(c & 15, LowerCase)); +inline void toHex(ArrayRef<uint8_t> Input, bool LowerCase, + SmallVectorImpl<char> &Output) { + const size_t Length = Input.size(); + Output.resize_for_overwrite(Length * 2); + + for (size_t i = 0; i < Length; i++) { + const uint8_t c = Input[i]; + Output[i * 2 ] = hexdigit(c >> 4, LowerCase); + Output[i * 2 + 1] = hexdigit(c & 15, LowerCase); } - return Output; } inline std::string toHex(ArrayRef<uint8_t> Input, bool LowerCase = false) { - return toHex(toStringRef(Input), LowerCase); + SmallString<16> Output; + toHex(Input, LowerCase, Output); + return std::string(Output); +} + +inline std::string toHex(StringRef Input, bool LowerCase = false) { + return toHex(arrayRefFromStringRef(Input), LowerCase); } /// Store the binary representation of the two provided values, \p MSB and |