clang-format: Correctly detect casts to qualified types.

Before:
  ns::E f() { return (ns::E) - 1; }

After:
  ns::E f() { return (ns::E)-1; }

This fixes llvm.org/PR23503.

llvm-svn: 237684

2 files changed, 3 insertions, 1 deletions

diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
index d3122615c83..772fa1d2390 100644
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -1082,7 +1082,8 @@ private:
         }
 
         for (; Prev != Tok.MatchingParen; Prev = Prev->Previous) {
-          if (!Prev || !Prev->isOneOf(tok::kw_const, tok::identifier)) {
+          if (!Prev ||
+              !Prev->isOneOf(tok::kw_const, tok::identifier, tok::coloncolon)) {
             IsCast = false;
             break;
           }
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index 3903ac31e83..9c3448ad83b 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -5765,6 +5765,7 @@ TEST_F(FormatTest, FormatsCasts) {
   verifyFormat("my_int a = (const my_int)-1;");
   verifyFormat("my_int a = (const my_int *)-1;");
   verifyFormat("my_int a = (my_int)(my_int)-1;");
+  verifyFormat("my_int a = (ns::my_int)-2;");
 
   // FIXME: single value wrapped with paren will be treated as cast.
   verifyFormat("void f(int i = (kValue)*kMask) {}");