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annotate rust/hg-core/src/dirstate.rs @ 52760:94e2547e6f3d

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rust: move code from utils to utils::strings This moves string-related functions in hg::utils into the recently added hg::utils::strings module.
author Mitchell Kember <mkember@janestreet.com>
date Thu, 16 Jan 2025 13:15:02 -0500
parents 79e8118cd846
children c5773445d350
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1 // dirstate module
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2 //
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3 // Copyright 2019 Raphaël Gomès <rgomes@octobus.net>
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4 //
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5 // This software may be used and distributed according to the terms of the
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6 // GNU General Public License version 2 or any later version.
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7
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8 use std::fmt;
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9
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10 use crate::dirstate::on_disk::DirstateV2ParseError;
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11 use crate::errors;
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12 use crate::revlog::node::NULL_NODE;
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13 use crate::revlog::Node;
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14 use crate::utils::hg_path::{HgPath, HgPathBuf, HgPathError};
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15 use bytes_cast::BytesCast;
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16 use entry::DirstateEntry;
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17
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18 pub mod dirs_multiset;
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19 pub mod dirstate_map;
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20 pub mod entry;
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21 pub mod on_disk;
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22 pub mod owning;
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23 pub mod parsers;
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24 pub mod path_with_basename;
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25 pub mod status;
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26
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27 #[derive(Debug, PartialEq, Copy, Clone, BytesCast)]
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28 #[repr(C)]
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29 pub struct DirstateParents {
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30 pub p1: Node,
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31 pub p2: Node,
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32 }
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33
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34 impl DirstateParents {
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35 pub const NULL: Self = Self {
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36 p1: NULL_NODE,
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37 p2: NULL_NODE,
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38 };
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39
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40 pub fn is_merge(&self) -> bool {
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41 !(self.p2 == NULL_NODE)
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42 }
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43 }
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44
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45 pub type StateMapIter<'a> = Box<
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46 dyn Iterator<
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47 Item = Result<(&'a HgPath, DirstateEntry), DirstateV2ParseError>,
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48 > + Send
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49 + 'a,
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50 >;
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51
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52 pub type CopyMapIter<'a> = Box<
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53 dyn Iterator<Item = Result<(&'a HgPath, &'a HgPath), DirstateV2ParseError>>
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54 + Send
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55 + 'a,
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56 >;
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57
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58 #[derive(Debug, PartialEq)]
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59 pub enum DirstateMapError {
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60 PathNotFound(HgPathBuf),
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61 InvalidPath(HgPathError),
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62 }
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63
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64 impl From<HgPathError> for DirstateMapError {
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65 fn from(error: HgPathError) -> Self {
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66 Self::InvalidPath(error)
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67 }
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68 }
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69
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70 impl fmt::Display for DirstateMapError {
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71 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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72 match self {
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73 DirstateMapError::PathNotFound(_) => {
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74 f.write_str("expected a value, found none")
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75 }
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76 DirstateMapError::InvalidPath(path_error) => path_error.fmt(f),
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77 }
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78 }
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79 }
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80
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81 #[derive(Debug, derive_more::From)]
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82 pub enum DirstateError {
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83 Map(DirstateMapError),
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84 Common(errors::HgError),
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85 }
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86
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87 impl From<HgPathError> for DirstateError {
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88 fn from(error: HgPathError) -> Self {
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89 Self::Map(DirstateMapError::InvalidPath(error))
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90 }
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91 }
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92
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93 impl fmt::Display for DirstateError {
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94 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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95 match self {
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96 DirstateError::Map(error) => error.fmt(f),
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97 DirstateError::Common(error) => error.fmt(f),
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98 }
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99 }
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100 }