andygrove commented on code in PR #307:
URL: https://github.com/apache/datafusion-comet/pull/307#discussion_r1581876400
##########
core/src/execution/datafusion/expressions/cast.rs:
##########
@@ -142,6 +226,311 @@ impl Cast {
}
}
+fn cast_string_to_i8(str: &str, eval_mode: EvalMode) ->
CometResult<Option<i8>> {
+ Ok(cast_string_to_int_with_range_check(
+ str,
+ eval_mode,
+ "TINYINT",
+ i8::MIN as i32,
+ i8::MAX as i32,
+ )?
+ .map(|v| v as i8))
+}
+
+fn cast_string_to_i16(str: &str, eval_mode: EvalMode) ->
CometResult<Option<i16>> {
+ Ok(cast_string_to_int_with_range_check(
+ str,
+ eval_mode,
+ "SMALLINT",
+ i16::MIN as i32,
+ i16::MAX as i32,
+ )?
+ .map(|v| v as i16))
+}
+
+fn cast_string_to_i32(str: &str, eval_mode: EvalMode) ->
CometResult<Option<i32>> {
+ let mut accum = CastStringToInt32::default();
+ do_cast_string_to_int(&mut accum, str, eval_mode, "INT")?;
+ Ok(accum.result)
+}
+
+fn cast_string_to_i64(str: &str, eval_mode: EvalMode) ->
CometResult<Option<i64>> {
+ let mut accum = CastStringToInt64::default();
+ do_cast_string_to_int(&mut accum, str, eval_mode, "BIGINT")?;
+ Ok(accum.result)
+}
+
+fn cast_string_to_int_with_range_check(
+ str: &str,
+ eval_mode: EvalMode,
+ type_name: &str,
+ min: i32,
+ max: i32,
+) -> CometResult<Option<i32>> {
+ let mut accum = CastStringToInt32::default();
Review Comment:
This code is removed now. I eventually figured out how to use generics 😅
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