Add initial support for list slices. This currently allows you to do stuff

like this:

def B {
  list<int> X = [10, 20, 30, 4, 1, 1231, 20] [2-4,2,2,0-6];
}

... which isn't particularly useful, but more is to come.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15247 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 0 deletions

diff --git a/utils/TableGen/Record.h b/utils/TableGen/Record.h
index 95c50aea7f..a9ccf40468 100644
--- a/utils/TableGen/Record.h
+++ b/utils/TableGen/Record.h
@@ -304,6 +304,15 @@ struct Init {
     return 0;
   }
 
+  /// convertInitListSlice - This method is used to implement the list slice
+  /// selection operator.  Given an initializer, it selects the specified list
+  /// elements, returning them as a new init of list type.  If it is not legal
+  /// to take a slice of this, return null.
+  ///
+  virtual Init *convertInitListSlice(const std::vector<unsigned> &Elements) {
+    return 0;
+  }
+
   /// getFieldType - This method is used to implement the FieldInit class.
   /// Implementors of this method should return the type of the named field if
   /// they are of record type.
@@ -466,6 +475,8 @@ public:
     return Values[i];
   }
 
+  Init *convertInitListSlice(const std::vector<unsigned> &Elements);
+
   virtual Init *convertInitializerTo(RecTy *Ty) {
     return Ty->convertValue(this);
   }