X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FSupport%2FSMLoc.h;h=1bf810b4aaf2f2e03ed30e4d28c7988b22592654;hb=cbeb8d9869aafec3c2c1ee0922f0a4d5bb4a916a;hp=164b16c9f57aa555b0647adf5034b04828cb3add;hpb=76d76d568942e08ee35762532a7090a596af906c;p=oota-llvm.git

diff --git a/include/llvm/Support/SMLoc.h b/include/llvm/Support/SMLoc.h
index 164b16c9f57..1bf810b4aaf 100644
--- a/include/llvm/Support/SMLoc.h
+++ b/include/llvm/Support/SMLoc.h
@@ -15,22 +15,23 @@
 #ifndef SUPPORT_SMLOC_H
 #define SUPPORT_SMLOC_H
 
+#include <cassert>
+
 namespace llvm {
 
-// SMLoc - Represents a location in source code.
-class SMLoc {    
+/// 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; }
-    
+
   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;
@@ -38,6 +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
+