X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FSupport%2FSMLoc.h;h=1bf810b4aaf2f2e03ed30e4d28c7988b22592654;hb=525398e1376b0d61fe80a83ed2261e2e6e6ab4a3;hp=02db32794b6d7ae0ba9b836c9d4f2728e7219921;hpb=d33b276bcb1efd4fa14c32fec68ae24baf30eb28;p=oota-llvm.git

diff --git a/include/llvm/Support/SMLoc.h b/include/llvm/Support/SMLoc.h
index 02db32794b6..1bf810b4aaf 100644
--- a/include/llvm/Support/SMLoc.h
+++ b/include/llvm/Support/SMLoc.h
@@ -15,14 +15,15 @@
 #ifndef SUPPORT_SMLOC_H
 #define SUPPORT_SMLOC_H
 
+#include <cassert>
+
 namespace llvm {
 
-// SMLoc - Represents a location in source code.
+/// 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; }
 
@@ -38,7 +39,23 @@ public:
   }
 };
 
-}
+/// 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.
+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