Remove "range_iterator" from PathDiagnosticPiece and just use ArrayRef<SourceRange> for ranges.  This 
removes conceptual clutter, and can allow us to easy migrate to C++11 style for-range loops if we
ever move to using C++11 in Clang.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162029 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h b/include/clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h
index cdc9c83..973cfb1 100644
--- a/include/clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h
+++ b/include/clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h
@@ -335,18 +335,9 @@
     ranges.push_back(SourceRange(B,E));
   }
 
-  typedef const SourceRange* range_iterator;
-
+  /// Return the SourceRanges associated with this PathDiagnosticPiece.
   ArrayRef<SourceRange> getRanges() const { return ranges; }
 
-  range_iterator ranges_begin() const {
-    return ranges.empty() ? NULL : &ranges[0];
-  }
-
-  range_iterator ranges_end() const {
-    return ranges_begin() + ranges.size();
-  }
-
   static inline bool classof(const PathDiagnosticPiece *P) {
     return true;
   }
diff --git a/lib/StaticAnalyzer/Core/HTMLDiagnostics.cpp b/lib/StaticAnalyzer/Core/HTMLDiagnostics.cpp
index 995135f..c09bdf2 100644
--- a/lib/StaticAnalyzer/Core/HTMLDiagnostics.cpp
+++ b/lib/StaticAnalyzer/Core/HTMLDiagnostics.cpp
@@ -482,9 +482,11 @@
   R.InsertTextBefore(Loc, os.str());
 
   // Now highlight the ranges.
-  for (const SourceRange *I = P.ranges_begin(), *E = P.ranges_end();
-        I != E; ++I)
+  ArrayRef<SourceRange> Ranges = P.getRanges();
+  for (ArrayRef<SourceRange>::iterator I = Ranges.begin(),
+                                       E = Ranges.end(); I != E; ++I) {
     HighlightRange(R, LPosInfo.first, *I);
+  }
 
 #if 0
   // If there is a code insertion hint, insert that code.
diff --git a/lib/StaticAnalyzer/Core/PathDiagnostic.cpp b/lib/StaticAnalyzer/Core/PathDiagnostic.cpp
index e8db9c4..c849778 100644
--- a/lib/StaticAnalyzer/Core/PathDiagnostic.cpp
+++ b/lib/StaticAnalyzer/Core/PathDiagnostic.cpp
@@ -157,13 +157,13 @@
           return; // FIXME: Emit a warning?
       
         // Check the source ranges.
-        for (PathDiagnosticPiece::range_iterator RI = piece->ranges_begin(),
-             RE = piece->ranges_end();
-             RI != RE; ++RI) {
-          SourceLocation L = SMgr.getExpansionLoc(RI->getBegin());
+        ArrayRef<SourceRange> Ranges = piece->getRanges();
+        for (ArrayRef<SourceRange>::iterator I = Ranges.begin(),
+                                             E = Ranges.end(); I != E; ++I) {
+          SourceLocation L = SMgr.getExpansionLoc(I->getBegin());
           if (!L.isFileID() || SMgr.getFileID(L) != FID)
             return; // FIXME: Emit a warning?
-          L = SMgr.getExpansionLoc(RI->getEnd());
+          L = SMgr.getExpansionLoc(I->getEnd());
           if (!L.isFileID() || SMgr.getFileID(L) != FID)
             return; // FIXME: Emit a warning?
         }
@@ -718,7 +718,9 @@
   ID.AddString(str);
   // FIXME: Add profiling support for code hints.
   ID.AddInteger((unsigned) getDisplayHint());
-  for (range_iterator I = ranges_begin(), E = ranges_end(); I != E; ++I) {
+  ArrayRef<SourceRange> Ranges = getRanges();
+  for (ArrayRef<SourceRange>::iterator I = Ranges.begin(), E = Ranges.end();
+                                        I != E; ++I) {
     ID.AddInteger(I->getBegin().getRawEncoding());
     ID.AddInteger(I->getEnd().getRawEncoding());
   }  
diff --git a/lib/StaticAnalyzer/Core/PlistDiagnostics.cpp b/lib/StaticAnalyzer/Core/PlistDiagnostics.cpp
index d672050..d5fdd9d 100644
--- a/lib/StaticAnalyzer/Core/PlistDiagnostics.cpp
+++ b/lib/StaticAnalyzer/Core/PlistDiagnostics.cpp
@@ -220,15 +220,16 @@
   EmitLocation(o, SM, LangOpts, L, FM, indent);
 
   // Output the ranges (if any).
-  PathDiagnosticPiece::range_iterator RI = P.ranges_begin(),
-  RE = P.ranges_end();
+  ArrayRef<SourceRange> Ranges = P.getRanges();
 
-  if (RI != RE) {
+  if (!Ranges.empty()) {
     Indent(o, indent) << "<key>ranges</key>\n";
     Indent(o, indent) << "<array>\n";
     ++indent;
-    for (; RI != RE; ++RI)
-      EmitRange(o, SM, LangOpts, *RI, FM, indent+1);
+    for (ArrayRef<SourceRange>::iterator I = Ranges.begin(), E = Ranges.end();
+         I != E; ++I) {
+      EmitRange(o, SM, LangOpts, *I, FM, indent+1);
+    }
     --indent;
     Indent(o, indent) << "</array>\n";
   }
@@ -369,11 +370,11 @@
            I!=E; ++I) {
         const PathDiagnosticPiece *piece = I->getPtr();
         AddFID(FM, Fids, SM, piece->getLocation().asLocation());
-
-        for (PathDiagnosticPiece::range_iterator RI = piece->ranges_begin(),
-             RE= piece->ranges_end(); RI != RE; ++RI) {
-          AddFID(FM, Fids, SM, RI->getBegin());
-          AddFID(FM, Fids, SM, RI->getEnd());
+        ArrayRef<SourceRange> Ranges = piece->getRanges();
+        for (ArrayRef<SourceRange>::iterator I = Ranges.begin(),
+                                             E = Ranges.end(); I != E; ++I) {
+          AddFID(FM, Fids, SM, I->getBegin());
+          AddFID(FM, Fids, SM, I->getEnd());
         }
 
         if (const PathDiagnosticCallPiece *call =