Use an ArrayRef<OffsetOfComponent> instead of pointer and size throughout offsetof handling code. Also use a range-based for loop. NFC

llvm-svn: 250989

2 files changed, 12 insertions, 18 deletions

diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index f3262852855..1b43f92128e 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -11137,8 +11137,7 @@ Sema::ActOnStmtExpr(SourceLocation LPLoc, Stmt *SubStmt,
 
 ExprResult Sema::BuildBuiltinOffsetOf(SourceLocation BuiltinLoc,
                                       TypeSourceInfo *TInfo,
-                                      OffsetOfComponent *CompPtr,
-                                      unsigned NumComponents,
+                                      ArrayRef<OffsetOfComponent> Components,
                                       SourceLocation RParenLoc) {
   QualType ArgTy = TInfo->getType();
   bool Dependent = ArgTy->isDependentType();
@@ -11162,17 +11161,16 @@ ExprResult Sema::BuildBuiltinOffsetOf(SourceLocation BuiltinLoc,
   // GCC extension, diagnose them.
   // FIXME: This diagnostic isn't actually visible because the location is in
   // a system header!
-  if (NumComponents != 1)
+  if (Components.size() != 1)
     Diag(BuiltinLoc, diag::ext_offsetof_extended_field_designator)
-      << SourceRange(CompPtr[1].LocStart, CompPtr[NumComponents-1].LocEnd);
+      << SourceRange(Components[1].LocStart, Components.back().LocEnd);
   
   bool DidWarnAboutNonPOD = false;
   QualType CurrentType = ArgTy;
   typedef OffsetOfExpr::OffsetOfNode OffsetOfNode;
   SmallVector<OffsetOfNode, 4> Comps;
   SmallVector<Expr*, 4> Exprs;
-  for (unsigned i = 0; i != NumComponents; ++i) {
-    const OffsetOfComponent &OC = CompPtr[i];
+  for (const OffsetOfComponent &OC : Components) {
     if (OC.isBrackets) {
       // Offset of an array sub-field.  TODO: Should we allow vector elements?
       if (!CurrentType->isDependentType()) {
@@ -11240,7 +11238,7 @@ ExprResult Sema::BuildBuiltinOffsetOf(SourceLocation BuiltinLoc,
       if (!IsSafe && !DidWarnAboutNonPOD &&
           DiagRuntimeBehavior(BuiltinLoc, nullptr,
                               PDiag(DiagID)
-                              << SourceRange(CompPtr[0].LocStart, OC.LocEnd)
+                              << SourceRange(Components[0].LocStart, OC.LocEnd)
                               << CurrentType))
         DidWarnAboutNonPOD = true;
     }
@@ -11313,8 +11311,7 @@ ExprResult Sema::ActOnBuiltinOffsetOf(Scope *S,
                                       SourceLocation BuiltinLoc,
                                       SourceLocation TypeLoc,
                                       ParsedType ParsedArgTy,
-                                      OffsetOfComponent *CompPtr,
-                                      unsigned NumComponents,
+                                      ArrayRef<OffsetOfComponent> Components,
                                       SourceLocation RParenLoc) {
   
   TypeSourceInfo *ArgTInfo;
@@ -11325,8 +11322,7 @@ ExprResult Sema::ActOnBuiltinOffsetOf(Scope *S,
   if (!ArgTInfo)
     ArgTInfo = Context.getTrivialTypeSourceInfo(ArgTy, TypeLoc);
 
-  return BuildBuiltinOffsetOf(BuiltinLoc, ArgTInfo, CompPtr, NumComponents, 
-                              RParenLoc);
+  return BuildBuiltinOffsetOf(BuiltinLoc, ArgTInfo, Components, RParenLoc);
 }
 
 
diff --git a/clang/lib/Sema/TreeTransform.h b/clang/lib/Sema/TreeTransform.h
index 513c6285e96..29073debcd7 100644
--- a/clang/lib/Sema/TreeTransform.h
+++ b/clang/lib/Sema/TreeTransform.h
@@ -1850,12 +1850,11 @@ public:
   /// By default, performs semantic analysis to build the new expression.
   /// Subclasses may override this routine to provide different behavior.
   ExprResult RebuildOffsetOfExpr(SourceLocation OperatorLoc,
-                                       TypeSourceInfo *Type,
-                                       Sema::OffsetOfComponent *Components,
-                                       unsigned NumComponents,
-                                       SourceLocation RParenLoc) {
+                                 TypeSourceInfo *Type,
+                                 ArrayRef<Sema::OffsetOfComponent> Components,
+                                 SourceLocation RParenLoc) {
     return getSema().BuildBuiltinOffsetOf(OperatorLoc, Type, Components,
-                                          NumComponents, RParenLoc);
+                                          RParenLoc);
   }
 
   /// \brief Build a new sizeof, alignof or vec_step expression with a
@@ -7816,8 +7815,7 @@ TreeTransform<Derived>::TransformOffsetOfExpr(OffsetOfExpr *E) {
 
   // Build a new offsetof expression.
   return getDerived().RebuildOffsetOfExpr(E->getOperatorLoc(), Type,
-                                          Components.data(), Components.size(),
-                                          E->getRParenLoc());
+                                          Components, E->getRParenLoc());
 }
 
 template<typename Derived>