feat: Initial implementation of size for array inputs (#2862)

Author: andygrove

docs/source/user-guide/latest/configs.md

@@ -307,6 +307,7 @@ These settings can be used to determine which parts of the plan are accelerated
 | `spark.comet.expression.Signum.enabled` | Enable Comet acceleration for `Signum` | true |
 | `spark.comet.expression.Sin.enabled` | Enable Comet acceleration for `Sin` | true |
 | `spark.comet.expression.Sinh.enabled` | Enable Comet acceleration for `Sinh` | true |
+| `spark.comet.expression.Size.enabled` | Enable Comet acceleration for `Size` | true |
 | `spark.comet.expression.SortOrder.enabled` | Enable Comet acceleration for `SortOrder` | true |
 | `spark.comet.expression.SparkPartitionID.enabled` | Enable Comet acceleration for `SparkPartitionID` | true |
 | `spark.comet.expression.Sqrt.enabled` | Enable Comet acceleration for `Sqrt` | true |

native/spark-expr/src/array_funcs/mod.rs

@@ -19,8 +19,10 @@ mod array_insert;
 mod array_repeat;
 mod get_array_struct_fields;
 mod list_extract;
+mod size;
 
 pub use array_insert::ArrayInsert;
 pub use array_repeat::spark_array_repeat;
 pub use get_array_struct_fields::GetArrayStructFields;
 pub use list_extract::ListExtract;
+pub use size::{spark_size, SparkSizeFunc};