1 files changed, 14 insertions, 1 deletions
diff --git a/include/clang/Driver/OptParser.td b/include/clang/Driver/OptParser.td
index 70b59c6..f5b6980 100644
--- a/include/clang/Driver/OptParser.td
+++ b/include/clang/Driver/OptParser.td
@@ -14,14 +14,20 @@
 
 // Define the kinds of options.
 
-class OptionKind<string name, int predecence = 0> {
+class OptionKind<string name, int predecence = 0, bit sentinel = 0> {
   string Name = name;
   // The kind precedence, kinds with lower precedence are matched first.
   int Precedence = predecence;
+  // Indicate a sentinel option.
+  bit Sentinel = sentinel;
 }
 
 // An option group.
 def KIND_GROUP : OptionKind<"Group">;
+// The input option kind.
+def KIND_INPUT : OptionKind<"Input", 1, 1>;
+// The unknown option kind.
+def KIND_UNKNOWN : OptionKind<"Unknown", 2, 1>;
 // A flag with no values.
 def KIND_FLAG : OptionKind<"Flag">;
 // An option which prefixes its (single) value.
@@ -114,3 +120,10 @@ class Flags<list<OptionFlag> flags> { list<OptionFlag> Flags = flags; }
 class Group<OptionGroup group> { OptionGroup Group = group; }
 class HelpText<string text> { string HelpText = text; }
 class MetaVarName<string name> { string MetaVarName = name; }
+
+// Predefined options.
+
+// FIXME: Have generator validate that these appear in correct position (and
+// aren't duplicated).
+def INPUT : Option<"<input>", KIND_INPUT>, Flags<[DriverOption]>;
+def UNKNOWN : Option<"<unknown>", KIND_UNKNOWN>;