[clang-tidy] Skip misc-macro-parentheses for namespaces (Fix PR27400)

If a use of a macro argument is preceded by the `namespace` keyword, do
not warn that the use should be wrapped in parentheses.

Patch by Mads Ravn!

llvm-svn: 269786

1 files changed, 4 insertions, 0 deletions

diff --git a/clang-tools-extra/clang-tidy/misc/MacroParenthesesCheck.cpp b/clang-tools-extra/clang-tidy/misc/MacroParenthesesCheck.cpp
index 4b3e1ca688e..590bc4d8138 100644
--- a/clang-tools-extra/clang-tidy/misc/MacroParenthesesCheck.cpp
+++ b/clang-tools-extra/clang-tidy/misc/MacroParenthesesCheck.cpp
@@ -184,6 +184,10 @@ void MacroParenthesesPPCallbacks::argument(const Token &MacroNameTok,
         Next.isOneOf(tok::comma, tok::greater))
       continue;
 
+    // Namespaces.
+    if (Prev.is(tok::kw_namespace))
+      continue;
+
     Check->diag(Tok.getLocation(), "macro argument should be enclosed in "
                                    "parentheses")
         << FixItHint::CreateInsertion(Tok.getLocation(), "(")