From ae610d173dee8a17b5a4c7c0029d05e6105dfd62 Mon Sep 17 00:00:00 2001
From: Manuel Klimek <klimek@google.com>
Date: Mon, 21 Jan 2013 14:32:05 +0000
Subject: [PATCH] Fixes indent in linkage specification blocks.

We now indent:
extern "C" {
int a;
}

without additional indent inside the extern "C" block.

llvm-svn: 173045
---
 clang/lib/Format/UnwrappedLineParser.cpp | 12 ++++++++++++
 clang/unittests/Format/FormatTest.cpp    |  4 ++++
 2 files changed, 16 insertions(+)

diff --git a/clang/lib/Format/UnwrappedLineParser.cpp b/clang/lib/Format/UnwrappedLineParser.cpp
index 7f9e97e..f1d08a6 100644
--- a/clang/lib/Format/UnwrappedLineParser.cpp
+++ b/clang/lib/Format/UnwrappedLineParser.cpp
@@ -311,6 +311,18 @@ void UnwrappedLineParser::parseStructuralElement() {
   case tok::kw_return:
     parseReturn();
     return;
+  case tok::kw_extern:
+    nextToken();
+    if (FormatTok.Tok.is(tok::string_literal)) {
+      nextToken();
+      if (FormatTok.Tok.is(tok::l_brace)) {
+        parseBlock(0);
+        addUnwrappedLine();
+        return;
+      }
+    }
+    // In all other cases, parse the declaration.
+    break;
   default:
     break;
   }
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index f8c454b7..f67cd8c 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -526,6 +526,10 @@ TEST_F(FormatTest, FormatsNamespaces) {
                "void f() { f(); }");
 }
 
+TEST_F(FormatTest, FormatsExternC) {
+  verifyFormat("extern \"C\" {\nint a;");
+}
+
 TEST_F(FormatTest, FormatTryCatch) {
   // FIXME: Handle try-catch explicitly in the UnwrappedLineParser, then we'll
   // also not create single-line-blocks.
-- 
2.7.4