clang-format: Understand 'typename' in placement new.

Before:
  new (aaaaaaaaaaaaaaaaaaaaaaaaaa(
      aaaaaaaaaaaaaaaaaaaaaaa)) typename aaaaaaaaaaaaaaaaaaaaaaaa();

After:
  new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))
      typename aaaaaaaaaaaaaaaaaaaaaaaa();

llvm-svn: 214300

clang/lib/Format/TokenAnnotator.cpp

@@ -1811,7 +1811,8 @@ bool TokenAnnotator::canBreakBefore(const AnnotatedLine &Line,
          Left.isOneOf(tok::comma, tok::coloncolon, tok::semi, tok::l_brace,
                       tok::kw_class, tok::kw_struct) ||
          Right.isMemberAccess() ||
-         Right.isOneOf(tok::lessless, tok::colon, tok::l_square, tok::at) ||
+         Right.isOneOf(tok::lessless, tok::colon, tok::l_square, tok::at,
+                       tok::kw_typename) ||
          (Left.is(tok::r_paren) &&
           Right.isOneOf(tok::identifier, tok::kw_const)) ||
          (Left.is(tok::l_paren) && !Right.is(tok::r_paren));

clang/unittests/Format/FormatTest.cpp

@@ -4714,6 +4714,8 @@ TEST_F(FormatTest, UnderstandsNewAndDelete) {
                "  delete a;\n"
                "  delete (A *)a;\n"
                "}");
+  verifyFormat("new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n"
+               "    typename aaaaaaaaaaaaaaaaaaaaaaaa();");
 }
 
 TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) {