clang-format: Fix namespace end comments for namespaces with attributes and macros.

Fixes PR39247.

While here, also make C++20 `namespace A::inline B::inline C` nested
inline namespaced definitions work.

Before:
    #define DEPRECATE_WOOF [[deprecated("meow")]]

    namespace DEPRECATE_WOOF woof {
    void f() {}
    } // namespace DEPRECATE_WOOFwoof

    namespace [[deprecated("meow")]] woof {
      void f() {}
    } // namespace [[deprecated("meow")]]woof

    namespace woof::inline bark {
      void f() {}
    } // namespace woof::inlinebark

Now:
    #define DEPRECATE_WOOF [[deprecated("meow")]]

    namespace DEPRECATE_WOOF woof {
    void f() {}
    } // namespace woof

    namespace [[deprecated("meow")]] woof {
    void f() {}
    } // namespace woof

    namespace woof::inline bark {
    void f() {}
    } // namespace woof::inline bark

(In addition to the fixed namespace end comments, also note the correct
indent of the namespace contents.)

Differential Revision: https://reviews.llvm.org/D65125

llvm-svn: 366831

1 files changed, 7 insertions, 2 deletions

diff --git a/clang/lib/Format/UnwrappedLineParser.cpp b/clang/lib/Format/UnwrappedLineParser.cpp
index b9da698a931..33d0563d942 100644
--- a/clang/lib/Format/UnwrappedLineParser.cpp
+++ b/clang/lib/Format/UnwrappedLineParser.cpp
@@ -1873,8 +1873,13 @@ void UnwrappedLineParser::parseNamespace() {
   if (InitialToken.is(TT_NamespaceMacro)) {
     parseParens();
   } else {
-    while (FormatTok->isOneOf(tok::identifier, tok::coloncolon))
-      nextToken();
+    while (FormatTok->isOneOf(tok::identifier, tok::coloncolon, tok::kw_inline,
+                              tok::l_square)) {
+      if (FormatTok->is(tok::l_square))
+        parseSquare();
+      else
+        nextToken();
+    }
   }
   if (FormatTok->Tok.is(tok::l_brace)) {
     if (ShouldBreakBeforeBrace(Style, InitialToken))