clang-format: Add support for SEH __try / __except / __finally blocks.

This lets clang-format format

    __try {
    } __except(0) {
    }

and

    __try {
    } __finally {
    }

correctly. __try and __finally are keywords if `LangOpts.MicrosoftExt` is set,
so this turns this on.  This also enables a few other keywords, but it
shouldn't overly perturb regular clang-format operation.  __except is a
context-sensitive keyword, so `AdditionalKeywords` needs to be passed around to
a few more places.

Fixes PR22321.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@228148 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 2 deletions

diff --git a/lib/Format/UnwrappedLineFormatter.h b/lib/Format/UnwrappedLineFormatter.h
index 3ae6dbc4db..5e0261210d 100644
--- a/lib/Format/UnwrappedLineFormatter.h
+++ b/lib/Format/UnwrappedLineFormatter.h
@@ -32,8 +32,10 @@ class UnwrappedLineFormatter {
 public:
   UnwrappedLineFormatter(ContinuationIndenter *Indenter,
                          WhitespaceManager *Whitespaces,
-                         const FormatStyle &Style)
-      : Indenter(Indenter), Whitespaces(Whitespaces), Style(Style) {}
+                         const FormatStyle &Style,
+                         const AdditionalKeywords &Keywords)
+      : Indenter(Indenter), Whitespaces(Whitespaces), Style(Style),
+        Keywords(Keywords) {}
 
   unsigned format(const SmallVectorImpl<AnnotatedLine *> &Lines, bool DryRun,
                   int AdditionalIndent = 0, bool FixBadIndentation = false);
@@ -153,6 +155,7 @@ private:
   ContinuationIndenter *Indenter;
   WhitespaceManager *Whitespaces;
   FormatStyle Style;
+  const AdditionalKeywords &Keywords;
 
   llvm::SpecificBumpPtrAllocator<StateNode> Allocator;