Change DeclContextLookup(Const)Result to (Mutable)ArrayRef<NamedDecl*>, as per review discussion in r170365

This does limit these typedefs to being sequences, but no current usage
requires them to be contiguous (we could expand this to a more general
iterator pair range concept at some point).

Also, it'd be nice if SmallVector were constructible directly from an ArrayRef
but this is a bit tricky since ArrayRef depends on SmallVectorBaseImpl for the
inverse conversion. (& generalizing over all range-like things, while nice,
would require some nontrivial SFINAE I haven't thought about yet)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170482 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 8 deletions

diff --git a/lib/AST/DeclCXX.cpp b/lib/AST/DeclCXX.cpp
index 73d6ddd6a6..fcd38ac721 100644
--- a/lib/AST/DeclCXX.cpp
+++ b/lib/AST/DeclCXX.cpp
@@ -1159,12 +1159,11 @@ CXXDestructorDecl *CXXRecordDecl::getDestructor() const {
     = Context.DeclarationNames.getCXXDestructorName(
                                           Context.getCanonicalType(ClassType));
 
-  DeclContext::lookup_const_iterator I, E;
-  llvm::tie(I, E) = lookup(Name);
-  if (I == E)
+  DeclContext::lookup_const_result R = lookup(Name);
+  if (R.empty())
     return 0;
 
-  CXXDestructorDecl *Dtor = cast<CXXDestructorDecl>(*I);
+  CXXDestructorDecl *Dtor = cast<CXXDestructorDecl>(R.front());
   return Dtor;
 }
 
@@ -1278,7 +1277,7 @@ CXXMethodDecl::getCorrespondingMethodInClass(const CXXRecordDecl *RD,
   }
 
   lookup_const_result Candidates = RD->lookup(getDeclName());
-  for (NamedDecl * const * I = Candidates.first; I != Candidates.second; ++I) {
+  for (NamedDecl * const * I = Candidates.begin(); I != Candidates.end(); ++I) {
     CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(*I);
     if (!MD)
       continue;
@@ -1353,9 +1352,10 @@ bool CXXMethodDecl::isUsualDeallocationFunction() const {
                  
   // This function is a usual deallocation function if there are no 
   // single-parameter deallocation functions of the same kind.
-  for (DeclContext::lookup_const_result R = getDeclContext()->lookup(getDeclName());
-       R.first != R.second; ++R.first) {
-    if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(*R.first))
+  DeclContext::lookup_const_result R = getDeclContext()->lookup(getDeclName());
+  for (DeclContext::lookup_const_result::iterator I = R.begin(), E = R.end();
+       I != E; ++I) {
+    if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(*I))
       if (FD->getNumParams() == 1)
         return false;
   }