Method cast_op

crates/gitql-core/src/values/text.rs:333–351

(&self, target_type: &Box<dyn DataType>)

    }

    fn cast_op(&self, target_type: &Box<dyn DataType>) -> Result<Box<dyn Value>, String> {
        if target_type.is_bool() {
            return Ok(string_literal_to_boolean(&self.value));
        }

        if target_type.is_time() {
            return Ok(string_literal_to_time(&self.value));
        }

        if target_type.is_date() {
            return Ok(string_literal_to_date(&self.value));
        }

        if target_type.is_date_time() {
            return Ok(string_literal_to_date_time(&self.value));
        }

        Err("Unexpected value to perform `CAST` with".to_string())
    }
}