mercurial-scm/hg: rust/hg-core/src/utils.rs annotate

annotate rust/hg-core/src/utils.rs @ 42799:5399532510ae

rust: simply use TryInto to convert slice to array Since our rust module depends on TryInto, there's no point to avoid using it. While rewriting copy_into_array(), I noticed CPython interface doesn't check the length of the p1/p2 values, which is marked as TODO.

author	Yuya Nishihara <yuya@tcha.org>
date	Sat, 17 Aug 2019 11:37:42 +0900
parents	4b3b27d567d5
children	ce6797ef6eab

rev	line source
42751 4b3b27d567d5 rust-docstrings: add missing module docstrings Rapha?l Gom?s <rgomes@octobus.net> parents: 42748 diff changeset	1 // utils module
4b3b27d567d5 rust-docstrings: add missing module docstrings Rapha?l Gom?s <rgomes@octobus.net> parents: 42748 diff changeset	2 //
4b3b27d567d5 rust-docstrings: add missing module docstrings Rapha?l Gom?s <rgomes@octobus.net> parents: 42748 diff changeset	3 // Copyright 2019 Raphaël Gomès <rgomes@octobus.net>
4b3b27d567d5 rust-docstrings: add missing module docstrings Rapha?l Gom?s <rgomes@octobus.net> parents: 42748 diff changeset	4 //
4b3b27d567d5 rust-docstrings: add missing module docstrings Rapha?l Gom?s <rgomes@octobus.net> parents: 42748 diff changeset	5 // This software may be used and distributed according to the terms of the
4b3b27d567d5 rust-docstrings: add missing module docstrings Rapha?l Gom?s <rgomes@octobus.net> parents: 42748 diff changeset	6 // GNU General Public License version 2 or any later version.
4b3b27d567d5 rust-docstrings: add missing module docstrings Rapha?l Gom?s <rgomes@octobus.net> parents: 42748 diff changeset	7
4b3b27d567d5 rust-docstrings: add missing module docstrings Rapha?l Gom?s <rgomes@octobus.net> parents: 42748 diff changeset	8 //! Contains useful functions, traits, structs, etc. for use in core.
4b3b27d567d5 rust-docstrings: add missing module docstrings Rapha?l Gom?s <rgomes@octobus.net> parents: 42748 diff changeset	9
42437 9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	10 pub mod files;
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	11
42610 5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	12 /// Replaces the `from` slice with the `to` slice inside the `buf` slice.
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	13 ///
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	14 /// # Examples
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	15 ///
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	16 /// ```
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	17 /// use crate::hg::utils::replace_slice;
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	18 /// let mut line = b"I hate writing tests!".to_vec();
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	19 /// replace_slice(&mut line, b"hate", b"love");
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	20 /// assert_eq!(
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	21 /// line,
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	22 /// b"I love writing tests!".to_vec()
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	23 ///);
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	24 ///
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	25 /// ```
42437 9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	26 pub fn replace_slice<T>(buf: &mut [T], from: &[T], to: &[T])
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	27 where
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	28 T: Clone + PartialEq,
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	29 {
42611 2f760da140ee rust-utils: remove buggy assertion Rapha?l Gom?s <rgomes@octobus.net> parents: 42610 diff changeset	30 if buf.len() < from.len() \|\| from.len() != to.len() {
42437 9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	31 return;
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	32 }
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	33 for i in 0..=buf.len() - from.len() {
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	34 if buf[i..].starts_with(from) {
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	35 buf[i..(i + from.len())].clone_from_slice(to);
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	36 }
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	37 }
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	38 }
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	39
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	40 pub trait SliceExt {
42610 5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	41 fn trim_end(&self) -> &Self;
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	42 fn trim_start(&self) -> &Self;
42437 9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	43 fn trim(&self) -> &Self;
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	44 }
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	45
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	46 fn is_not_whitespace(c: &u8) -> bool {
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	47 !(*c as char).is_whitespace()
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	48 }
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	49
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	50 impl SliceExt for [u8] {
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	51 fn trim_end(&self) -> &[u8] {
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	52 if let Some(last) = self.iter().rposition(is_not_whitespace) {
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	53 &self[..last + 1]
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	54 } else {
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	55 &[]
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	56 }
9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	57 }
42610 5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	58 fn trim_start(&self) -> &[u8] {
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	59 if let Some(first) = self.iter().position(is_not_whitespace) {
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	60 &self[first..]
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	61 } else {
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	62 &[]
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	63 }
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	64 }
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	65
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	66 /// ```
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	67 /// use hg::utils::SliceExt;
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	68 /// assert_eq!(
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	69 /// b" to trim ".trim(),
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	70 /// b"to trim"
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	71 /// );
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	72 /// assert_eq!(
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	73 /// b"to trim ".trim(),
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	74 /// b"to trim"
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	75 /// );
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	76 /// assert_eq!(
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	77 /// b" to trim".trim(),
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	78 /// b"to trim"
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	79 /// );
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	80 /// ```
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	81 fn trim(&self) -> &[u8] {
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	82 self.trim_start().trim_end()
5672bb73f61e rust-utils: add docstrings and doctests for utils.rs Rapha?l Gom?s <rgomes@octobus.net> parents: 42609 diff changeset	83 }
42437 9609430d3625 rust-filepatterns: use bytes instead of String Rapha?l Gom?s <rgomes@octobus.net> parents: diff changeset	84 }

Mercurial > public > mercurial-scm > hg

annotate rust/hg-core/src/utils.rs @ 42799:5399532510ae