reifydb_function/text/
trim_start.rs

1// SPDX-License-Identifier: AGPL-3.0-or-later
2// Copyright (c) 2025 ReifyDB
3
4use reifydb_core::value::column::data::ColumnData;
5use reifydb_type::value::{container::utf8::Utf8Container, r#type::Type};
6
7use crate::{
8	ScalarFunction, ScalarFunctionContext,
9	error::{ScalarFunctionError, ScalarFunctionResult},
10	propagate_options,
11};
12
13pub struct TextTrimStart;
14
15impl TextTrimStart {
16	pub fn new() -> Self {
17		Self
18	}
19}
20
21impl ScalarFunction for TextTrimStart {
22	fn scalar(&self, ctx: ScalarFunctionContext) -> ScalarFunctionResult<ColumnData> {
23		if let Some(result) = propagate_options(self, &ctx) {
24			return result;
25		}
26
27		let columns = ctx.columns;
28		let row_count = ctx.row_count;
29
30		if columns.len() != 1 {
31			return Err(ScalarFunctionError::ArityMismatch {
32				function: ctx.fragment.clone(),
33				expected: 1,
34				actual: columns.len(),
35			});
36		}
37
38		let column = columns.get(0).unwrap();
39
40		match &column.data() {
41			ColumnData::Utf8 {
42				container,
43				max_bytes,
44			} => {
45				let mut result_data = Vec::with_capacity(row_count);
46
47				for i in 0..row_count {
48					if container.is_defined(i) {
49						let original_str = &container[i];
50						let trimmed_str = original_str.trim_start();
51						result_data.push(trimmed_str.to_string());
52					} else {
53						result_data.push(String::new());
54					}
55				}
56
57				Ok(ColumnData::Utf8 {
58					container: Utf8Container::new(result_data),
59					max_bytes: *max_bytes,
60				})
61			}
62			other => Err(ScalarFunctionError::InvalidArgumentType {
63				function: ctx.fragment.clone(),
64				argument_index: 0,
65				expected: vec![Type::Utf8],
66				actual: other.get_type(),
67			}),
68		}
69	}
70
71	fn return_type(&self, _input_types: &[Type]) -> Type {
72		Type::Utf8
73	}
74}
reifydb_function/text/trim_start.rs

reifydb_function/text/
trim_start.rs
