[clang-tidy] Fix type names in modernize-use-unique/shared_ptr checks.

Summary:
If the class being created in unique_ptr is in anonymous nampespace, the
anonymous namespace will be included in the apply-fixes. This patch fix
this.

```
namespace {
class Foo {};
}
std::unique_ptr<Foo> f;
f.reset(new Foo());
// Before the change: f = std::make_unique<(annonymous namespace)::Foo>();
// After the change: f = std::make_unique<Foo>();
```

Reviewers: alexfh

Reviewed By: alexfh

Subscribers: JDevlieghere, xazax.hun, cfe-commits

Differential Revision: https://reviews.llvm.org/D34286

llvm-svn: 306378

clang-tools-extra/clang-tidy/modernize/MakeSmartPtrCheck.cpp

@@ -16,6 +16,17 @@ namespace clang {
 namespace tidy {
 namespace modernize {
 
+namespace {
+StringRef GetNewExprName(const CXXNewExpr *NewExpr,
+                         const SourceManager &SM,
+                         const LangOptions &Lang) {
+  return Lexer::getSourceText(
+      CharSourceRange::getTokenRange(
+          NewExpr->getAllocatedTypeSourceInfo()->getTypeLoc().getSourceRange()),
+      SM, Lang);
+}
+} // namespace
+
 const char MakeSmartPtrCheck::PointerType[] = "pointerType";
 const char MakeSmartPtrCheck::ConstructorCall[] = "constructorCall";
 const char MakeSmartPtrCheck::ResetCall[] = "resetCall";
@@ -87,7 +98,7 @@ void MakeSmartPtrCheck::checkConstruct(SourceManager &SM,
   StringRef ExprStr = Lexer::getSourceText(
       CharSourceRange::getCharRange(
           ConstructCallStart, Construct->getParenOrBraceRange().getBegin()),
-      SM, LangOptions(), &Invalid);
+      SM, getLangOpts(), &Invalid);
   if (Invalid)
     return;
 
@@ -102,7 +113,8 @@ void MakeSmartPtrCheck::checkConstruct(SourceManager &SM,
     // we have to add it back.
     ConstructCallEnd = ConstructCallStart.getLocWithOffset(ExprStr.size());
     Diag << FixItHint::CreateInsertion(
-        ConstructCallEnd, "<" + Type->getAsString(getLangOpts()) + ">");
+        ConstructCallEnd,
+        "<" + GetNewExprName(New, SM, getLangOpts()).str() + ">");
   } else {
     ConstructCallEnd = ConstructCallStart.getLocWithOffset(LAngle);
   }
@@ -144,7 +156,7 @@ void MakeSmartPtrCheck::checkReset(SourceManager &SM,
   Diag << FixItHint::CreateReplacement(
       CharSourceRange::getCharRange(OperatorLoc, ExprEnd),
       (llvm::Twine(" = ") + makeSmartPtrFunctionName + "<" +
-       New->getAllocatedType().getAsString(getLangOpts()) + ">")
+       GetNewExprName(New, SM, getLangOpts()) + ">")
           .str());
 
   if (Expr->isArrow())

clang-tools-extra/test/clang-tidy/modernize-make-unique.cpp

@@ -49,6 +49,14 @@ struct DPair {
 
 struct Empty {};
 
+namespace {
+class Foo {};
+} // namespace
+
+namespace bar {
+class Bar {};
+} // namespace bar
+
 template <class T>
 using unique_ptr_ = std::unique_ptr<T>;
 
@@ -239,6 +247,20 @@ void initialization(int T, Base b) {
   std::unique_ptr<Empty> PEmpty = std::unique_ptr<Empty>(new Empty{});
   // CHECK-MESSAGES: :[[@LINE-1]]:35: warning: use std::make_unique instead
   // CHECK-FIXES: std::unique_ptr<Empty> PEmpty = std::make_unique<Empty>(Empty{});
+
+  std::unique_ptr<Foo> FF = std::unique_ptr<Foo>(new Foo());
+  // CHECK-MESSAGES: :[[@LINE-1]]:29: warning:
+  // CHECK-FIXES: std::unique_ptr<Foo> FF = std::make_unique<Foo>();
+  FF.reset(new Foo());
+  // CHECK-MESSAGES: :[[@LINE-1]]:6: warning:
+  // CHECK-FIXES: FF = std::make_unique<Foo>();
+
+  std::unique_ptr<bar::Bar> BB = std::unique_ptr<bar::Bar>(new bar::Bar());
+  // CHECK-MESSAGES: :[[@LINE-1]]:34: warning:
+  // CHECK-FIXES: std::unique_ptr<bar::Bar> BB = std::make_unique<bar::Bar>();
+  BB.reset(new bar::Bar());
+  // CHECK-MESSAGES: :[[@LINE-1]]:6: warning:
+  // CHECK-FIXES: BB = std::make_unique<bar::Bar>();
 }
 
 void aliases() {