Introduce serialization and deserialization of diagnostic information

so that CIndex can report diagnostics through the normal mechanisms
even when executing Clang in a separate process. This applies both
when performing code completion and when using ASTs as an intermediary
for clang_createTranslationUnitFromSourceFile().

The serialized format is not perfect at the moment, because it does
not encapsulate macro-instantiation information. Instead, it maps all
source locations back to the instantiation location. However, it does
maintain source-range and fix-it information. To get perfect fidelity
from the serialized format would require serializing a large chunk of
the source manager; at present, it isn't clear if this code will live
long enough for that to matter.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94740 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 1 deletions

diff --git a/include/clang/Frontend/DiagnosticOptions.h b/include/clang/Frontend/DiagnosticOptions.h
index 13039bb506..b37c18057f 100644
--- a/include/clang/Frontend/DiagnosticOptions.h
+++ b/include/clang/Frontend/DiagnosticOptions.h
@@ -31,9 +31,12 @@ public:
   unsigned ShowOptionNames : 1;  /// Show the diagnostic name for mappable
                                  /// diagnostics.
   unsigned ShowColors : 1;       /// Show diagnostics with ANSI color sequences.
-  unsigned VerifyDiagnostics;    /// Check that diagnostics match the expected
+  unsigned VerifyDiagnostics: 1; /// Check that diagnostics match the expected
                                  /// diagnostics, indicated by markers in the
                                  /// input source file.
+  unsigned BinaryOutput : 1;     /// Emit diagnostics via the diagnostic 
+                                 /// binary serialization mechanism, to be
+                                 /// deserialized by, e.g., the CIndex library.
 
   /// The distance between tab stops.
   unsigned TabStop;
@@ -66,6 +69,7 @@ public:
     ShowOptionNames = 0;
     ShowSourceRanges = 0;
     VerifyDiagnostics = 0;
+    BinaryOutput = 0;
   }
 };