#include "llvm/ADT/StringRef.h"
#include "llvm/Support/DataTypes.h"
+#include <iterator>
namespace llvm {
template<typename T> class SmallVectorImpl;
return X < 10 ? '0' + X : HexChar + X - 10;
}
+/// Construct a string ref from a boolean.
+static inline StringRef toStringRef(bool B) {
+ return StringRef(B ? "true" : "false");
+}
+
/// Interpret the given character \p C as a hexadecimal digit and return its
/// value.
///
/// This should only be used with unsigned types.
///
template<typename IntTy>
-static inline char *utohex_buffer(IntTy X, char *BufferEnd) {
+static inline char *utohex_buffer(IntTy X, char *BufferEnd, bool LowerCase = false) {
char *BufPtr = BufferEnd;
*--BufPtr = 0; // Null terminate buffer.
if (X == 0) {
while (X) {
unsigned char Mod = static_cast<unsigned char>(X) & 15;
- *--BufPtr = hexdigit(Mod);
+ *--BufPtr = hexdigit(Mod, LowerCase);
X >>= 4;
}
return BufPtr;
}
-static inline std::string utohexstr(uint64_t X) {
+static inline std::string utohexstr(uint64_t X, bool LowerCase = false) {
char Buffer[17];
- return utohex_buffer(X, Buffer+17);
+ return utohex_buffer(X, Buffer+17, LowerCase);
}
static inline std::string utostr_32(uint32_t X, bool isNeg = false) {
// better: http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx
// 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)
+ for (StringRef::size_type i = 0, e = Str.size(); i != e; ++i)
Result = Result * 33 + (unsigned char)Str[i];
return Result;
}
}
}
+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