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Merge utohex_buffer into utohexstr, it's only caller. Also change utohexstr to use the std::string constructor that takes a start and end pointer. This saves a call to strlen. NFC

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llvm-svn: 259329
This commit is contained in:
Craig Topper 2016-01-31 20:00:22 +00:00
parent 4c5a2daa39
commit 9c91186b26
1 changed files with 6 additions and 21 deletions
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27
include/llvm/ADT/StringExtras.h
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@ -44,34 +44,19 @@ static inline unsigned hexDigitValue(char C) {
return -1U;
}
/// utohex_buffer - Emit the specified number into the buffer specified by
/// BufferEnd, returning a pointer to the start of the string. This can be used
/// like this: (note that the buffer must be large enough to handle any number):
/// char Buffer[40];
/// printf("0x%s", utohex_buffer(X, Buffer+40));
///
/// This should only be used with unsigned types.
///
template<typename IntTy>
static inline char *utohex_buffer(IntTy X, char *BufferEnd, bool LowerCase = false) {
char *BufPtr = BufferEnd;
*--BufPtr = 0; // Null terminate buffer.
if (X == 0) {
*--BufPtr = '0'; // Handle special case.
return BufPtr;
}
static inline std::string utohexstr(uint64_t X, bool LowerCase = false) {
char Buffer[17];
char *BufPtr = std::end(Buffer);
if (X == 0) *--BufPtr = '0';
while (X) {
unsigned char Mod = static_cast<unsigned char>(X) & 15;
*--BufPtr = hexdigit(Mod, LowerCase);
X >>= 4;
}
return BufPtr;
}
static inline std::string utohexstr(uint64_t X, bool LowerCase = false) {
char Buffer[17];
return utohex_buffer(X, std::end(Buffer), LowerCase);
return std::string(BufPtr, std::end(Buffer));
}
static inline std::string utostr_32(uint32_t X, bool isNeg = false) {