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annotate rust/hg-core/src/dirstate.rs @ 46578:a34cd9aa3323

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copies-rust: yield both p1 and p2 copies in `ChangedFiles.actions()` Instead of filtering the relevant parent inside de ChangedFiles method, we now yield all copies information and let the caller do the filtering. Soon, the filtering will be replaced by dispatching. Differential Revision: https://phab.mercurial-scm.org/D9649
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Mon, 21 Dec 2020 10:24:16 +0100
parents 776b97179c06
children f88e8ae0aa8f
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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 crate::errors::HgError;
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9 use crate::{utils::hg_path::HgPathBuf, FastHashMap};
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10 use std::collections::hash_map;
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11 use std::convert::TryFrom;
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12
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13 pub mod dirs_multiset;
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14 pub mod dirstate_map;
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15 #[cfg(feature = "dirstate-tree")]
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16 pub mod dirstate_tree;
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17 pub mod parsers;
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18 pub mod status;
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19
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20 #[derive(Debug, PartialEq, Clone)]
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21 pub struct DirstateParents {
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22 pub p1: [u8; 20],
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23 pub p2: [u8; 20],
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24 }
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25
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26 /// The C implementation uses all signed types. This will be an issue
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27 /// either when 4GB+ source files are commonplace or in 2038, whichever
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28 /// comes first.
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29 #[derive(Debug, PartialEq, Copy, Clone)]
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30 pub struct DirstateEntry {
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31 pub state: EntryState,
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32 pub mode: i32,
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33 pub mtime: i32,
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34 pub size: i32,
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35 }
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36
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37 /// A `DirstateEntry` with a size of `-2` means that it was merged from the
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38 /// other parent. This allows revert to pick the right status back during a
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39 /// merge.
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40 pub const SIZE_FROM_OTHER_PARENT: i32 = -2;
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41
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42 #[cfg(not(feature = "dirstate-tree"))]
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43 pub type StateMap = FastHashMap<HgPathBuf, DirstateEntry>;
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44 #[cfg(not(feature = "dirstate-tree"))]
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45 pub type StateMapIter<'a> = hash_map::Iter<'a, HgPathBuf, DirstateEntry>;
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46
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47 #[cfg(feature = "dirstate-tree")]
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48 pub type StateMap = dirstate_tree::tree::Tree;
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49 #[cfg(feature = "dirstate-tree")]
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50 pub type StateMapIter<'a> = dirstate_tree::iter::Iter<'a>;
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51 pub type CopyMap = FastHashMap<HgPathBuf, HgPathBuf>;
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52 pub type CopyMapIter<'a> = hash_map::Iter<'a, HgPathBuf, HgPathBuf>;
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53
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54 #[derive(Copy, Clone, Debug, Eq, PartialEq)]
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55 pub enum EntryState {
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56 Normal,
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57 Added,
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58 Removed,
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59 Merged,
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60 Unknown,
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61 }
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62
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63 impl TryFrom<u8> for EntryState {
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64 type Error = HgError;
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65
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66 fn try_from(value: u8) -> Result<Self, Self::Error> {
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67 match value {
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68 b'n' => Ok(EntryState::Normal),
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69 b'a' => Ok(EntryState::Added),
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70 b'r' => Ok(EntryState::Removed),
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71 b'm' => Ok(EntryState::Merged),
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72 b'?' => Ok(EntryState::Unknown),
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73 _ => Err(HgError::CorruptedRepository(format!(
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74 "Incorrect dirstate entry state {}",
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75 value
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76 ))),
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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 impl Into<u8> for EntryState {
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82 fn into(self) -> u8 {
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83 match self {
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84 EntryState::Normal => b'n',
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85 EntryState::Added => b'a',
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86 EntryState::Removed => b'r',
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87 EntryState::Merged => b'm',
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88 EntryState::Unknown => b'?',
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89 }
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90 }
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91 }