ARROW-14143: [IR] [C++] Add explicit cast node to IR

Closes apache#11244 from cpcloud/ARROW-14143 Authored-by: Phillip Cloud <[email protected]> Signed-off-by: Benjamin Kietzman <[email protected]>
meta-soul · Oct 4, 2021 · 73f9386 · 73f9386
1 parent 86eea9c
commit 73f9386
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diff --git a/cpp/src/generated/Expression_generated.h b/cpp/src/generated/Expression_generated.h
diff --git a/experimental/computeir/Expression.fbs b/experimental/computeir/Expression.fbs
@@ -181,6 +181,18 @@ table WindowCall {
   upper_bound: Bound (required);
 }
 
+/// A cast expression
+table Cast {
+  /// The expression to cast
+  operand: Expression (required);
+  /// The type to cast to. This value is a `Field` to allow complete representation
+  /// of arrow types.
+  ///
+  /// `Type` is unable to completely represent complex types like lists and
+  /// maps.
+  to: org.apache.arrow.flatbuf.Field (required);
+}
+
 /// Various expression types
 ///
 /// WindowCall is a separate variant
@@ -194,6 +206,7 @@ union ExpressionImpl {
   ConditionalCase,
   SimpleCase,
   WindowCall,
+  Cast,
 }
 
 /// Expression types