clang-format: Improve cast detection (fix false positive).

Before:
  fn(a)(b)+1;

After:
  fn(a)(b) + 1;

llvm-svn: 212935

clang/lib/Format/TokenAnnotator.cpp

@@ -841,6 +841,8 @@ private:
     FormatToken *LeftOfParens = nullptr;
     if (Tok.MatchingParen)
       LeftOfParens = Tok.MatchingParen->getPreviousNonComment();
+    if (LeftOfParens && LeftOfParens->is(tok::r_paren))
+      return false;
     bool IsCast = false;
     bool ParensAreEmpty = Tok.Previous == Tok.MatchingParen;
     bool ParensAreType = !Tok.Previous ||

clang/unittests/Format/FormatTest.cpp

@@ -4975,6 +4975,7 @@ TEST_F(FormatTest, FormatsCasts) {
   verifyFormat("return (my_int)aaa;");
   verifyFormat("#define x ((int)-1)");
   verifyFormat("#define p(q) ((int *)&q)");
+  verifyFormat("fn(a)(b) + 1;");
 
   verifyFormat("void f() { my_int a = (my_int)*b; }");
   verifyFormat("void f() { return P ? (my_int)*P : (my_int)0; }");