//
//===----------------------------------------------------------------------===//
-#ifndef SUPPORT_SMLOC_H
-#define SUPPORT_SMLOC_H
+#ifndef LLVM_SUPPORT_SMLOC_H
+#define LLVM_SUPPORT_SMLOC_H
#include <cassert>
namespace llvm {
-/// SMLoc - Represents a location in source code.
+/// Represents a location in source code.
class SMLoc {
const char *Ptr;
+
public:
- SMLoc() : Ptr(0) {}
- SMLoc(const SMLoc &RHS) : Ptr(RHS.Ptr) {}
+ SMLoc() : Ptr(nullptr) {}
- bool isValid() const { return Ptr != 0; }
+ bool isValid() const { return Ptr != nullptr; }
bool operator==(const SMLoc &RHS) const { return RHS.Ptr == Ptr; }
bool operator!=(const SMLoc &RHS) const { return RHS.Ptr != Ptr; }
}
};
-/// SMRange - Represents a range in source code. Note that unlike standard STL
-/// ranges, the locations specified are considered to be *inclusive*. For
-/// example, [X,X] *does* include X, it isn't an empty range.
+/// Represents a range in source code.
+///
+/// SMRange is implemented using a half-open range, as is the convention in C++.
+/// In the string "abc", the range (1,3] represents the substring "bc", and the
+/// range (2,2] represents an empty range between the characters "b" and "c".
class SMRange {
public:
SMLoc Start, End;
assert(Start.isValid() == End.isValid() &&
"Start and end should either both be valid or both be invalid!");
}
-
+
bool isValid() const { return Start.isValid(); }
};
-
+
} // end namespace llvm
#endif
-