clang-format: Correct SBPO_Always-behavior after function-like keywords

Before:
  auto f (int x) -> decltype(x) { return sizeof(x); }
  int g () noexcept(someCall ());
  static_assert(sizeof(char) == 1, "Your compiler is broken");

After:
  auto f (int x) -> decltype (x) { return sizeof (x); }
  int g () noexcept (someCall ());
  static_assert (sizeof (char) == 1, "Your compiler is broken");

This fixes llvm.org/PR20559.
Patch by Roman Kashitsyn, thank you!

llvm-svn: 214969

1 files changed, 20 insertions, 0 deletions

diff --git a/clang/lib/Format/FormatToken.h b/clang/lib/Format/FormatToken.h
index c376c500955..374c408dff5 100644
--- a/clang/lib/Format/FormatToken.h
+++ b/clang/lib/Format/FormatToken.h
@@ -353,6 +353,26 @@ struct FormatToken {
     return is(tok::comment) && (!Next || Next->NewlinesBefore > 0);
   }
 
+  /// \brief Returns \c true if this is a keyword that can be used
+  /// like a function call (e.g. sizeof, typeid, ...).
+  bool isFunctionLikeKeyword() const {
+    switch (Tok.getKind()) {
+    case tok::kw_throw:
+    case tok::kw_typeid:
+    case tok::kw_return:
+    case tok::kw_sizeof:
+    case tok::kw_alignof:
+    case tok::kw_alignas:
+    case tok::kw_decltype:
+    case tok::kw_noexcept:
+    case tok::kw_static_assert:
+    case tok::kw___attribute:
+      return true;
+    default:
+      return false;
+    }
+  }
+
   prec::Level getPrecedence() const {
     return getBinOpPrecedence(Tok.getKind(), true, true);
   }