//
//===----------------------------------------------------------------------===//
-#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.
-class SMLoc {
+/// Represents a location in source code.
+class SMLoc {
const char *Ptr;
public:
- SMLoc() : Ptr(0) {}
- SMLoc(const SMLoc &RHS) : Ptr(RHS.Ptr) {}
-
- bool isValid() const { return Ptr != 0; }
-
+ SMLoc() : Ptr(nullptr) {}
+
+ 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; }
-
+
const char *getPointer() const { return Ptr; }
-
+
static SMLoc getFromPointer(const char *Ptr) {
SMLoc L;
L.Ptr = Ptr;
}
};
-}
+/// 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;
+
+ SMRange() {}
+ SMRange(SMLoc St, SMLoc En) : Start(St), End(En) {
+ 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