Parser support for #pragma clang __debug captured

This patch implements parsing ‘#pragma clang __debug’ as a first step for
implementing captured statements. Captured statements are a mechanism for
doing outlining in the AST.
see http://lists.cs.uiuc.edu/pipermail/cfe-dev/2013-January/027540.html.

Currently returns StmtEmpty

Author: Andy Zhang <andy.zhang@intel.com>

Differential Revision: http://llvm-reviews.chandlerc.com/D369


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179614 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 15 insertions, 0 deletions

diff --git a/include/clang/Basic/TokenKinds.def b/include/clang/Basic/TokenKinds.def
index fb2edcec0d..bcf0f31dcb 100644
--- a/include/clang/Basic/TokenKinds.def
+++ b/include/clang/Basic/TokenKinds.def
@@ -615,6 +615,11 @@ ANNOTATION(pragma_pack)
 // handles them.
 ANNOTATION(pragma_parser_crash)
 
+// Annotation for #pragma clang __debug captured...
+// The lexer produces these so that they only take effect when the parser
+// handles them.
+ANNOTATION(pragma_captured)
+
 // Annotation for #pragma ms_struct...
 // The lexer produces these so that they only take effect when the parser
 // handles them.
diff --git a/include/clang/Lex/PPCallbacks.h b/include/clang/Lex/PPCallbacks.h
index 96359a2aa3..661a3a79ec 100644
--- a/include/clang/Lex/PPCallbacks.h
+++ b/include/clang/Lex/PPCallbacks.h
@@ -159,6 +159,12 @@ public:
                              const std::string &Str) {
   }
 
+  /// \brief Callback invoked when a \#pragma clang __debug directive is read.
+  /// \param Loc The location of the debug directive.
+  /// \param DebugType The identifier following __debug.
+  virtual void PragmaDebug(SourceLocation Loc, StringRef DebugType) {
+  }
+
   /// \brief Callback invoked when a \#pragma message directive is read.
   /// \param Loc The location of the message directive.
   /// \param Str The text of the message directive.
diff --git a/include/clang/Parse/Parser.h b/include/clang/Parse/Parser.h
index 8cc60a29df..812a09baa6 100644
--- a/include/clang/Parse/Parser.h
+++ b/include/clang/Parse/Parser.h
@@ -422,6 +422,10 @@ private:
   /// #pragma OPENCL EXTENSION...
   void HandlePragmaOpenCLExtension();
 
+  /// \brief Handle the annotation token produced for
+  /// #pragma clang __debug captured
+  StmtResult HandlePragmaCaptured();
+
   /// GetLookAheadToken - This peeks ahead N tokens and returns that token
   /// without consuming any tokens.  LookAhead(0) returns 'Tok', LookAhead(1)
   /// returns the token after Tok, etc.