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annotate rust/hg-core/src/testing.rs @ 52043:e1fe336c007a

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rust-repo: don't use on-disk dirstate parents in v1 This mistake was not causing any problems yet since we were never updating parents from Rust code. This is about to change, so let's fix it.
author Rapha?l Gom?s <rgomes@octobus.net>
date Wed, 02 Oct 2024 13:36:51 +0200
parents 4c5f6e95df84
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 // testing.rs
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2 //
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3 // Copyright 2018 Georges Racinet <georges.racinet@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::{Graph, GraphError, Revision, NULL_REVISION};
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9
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10 /// A stub `Graph`, same as the one from `test-ancestor.py`
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11 ///
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12 /// o 13
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13 /// |
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14 /// | o 12
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15 /// | |
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16 /// | | o 11
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17 /// | | |\
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18 /// | | | | o 10
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19 /// | | | | |
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20 /// | o---+ | 9
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21 /// | | | | |
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22 /// o | | | | 8
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23 /// / / / /
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24 /// | | o | 7
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25 /// | | | |
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26 /// o---+ | 6
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27 /// / / /
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28 /// | | o 5
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29 /// | |/
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30 /// | o 4
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31 /// | |
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32 /// o | 3
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33 /// | |
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34 /// | o 2
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35 /// |/
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36 /// o 1
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37 /// |
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38 /// o 0
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39 #[derive(Clone, Debug)]
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40 pub struct SampleGraph;
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41
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42 impl Graph for SampleGraph {
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43 fn parents(&self, rev: Revision) -> Result<[Revision; 2], GraphError> {
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44 let null_rev = NULL_REVISION.0;
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45 let res = match rev.0 {
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46 0 => Ok([null_rev, null_rev]),
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47 1 => Ok([0, null_rev]),
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48 2 => Ok([1, null_rev]),
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49 3 => Ok([1, null_rev]),
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50 4 => Ok([2, null_rev]),
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51 5 => Ok([4, null_rev]),
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52 6 => Ok([4, null_rev]),
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53 7 => Ok([4, null_rev]),
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54 8 => Ok([null_rev, null_rev]),
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55 9 => Ok([6, 7]),
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56 10 => Ok([5, null_rev]),
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57 11 => Ok([3, 7]),
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58 12 => Ok([9, null_rev]),
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59 13 => Ok([8, null_rev]),
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60 r => Err(GraphError::ParentOutOfRange(Revision(r))),
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61 };
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62 match res {
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63 Ok([a, b]) => Ok([Revision(a), Revision(b)]),
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64 Err(e) => Err(e),
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65 }
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66 }
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67 }
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68
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69 // A Graph represented by a vector whose indices are revisions
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70 // and values are parents of the revisions
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71 pub type VecGraph = Vec<[Revision; 2]>;
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72
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73 impl Graph for VecGraph {
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74 fn parents(&self, rev: Revision) -> Result<[Revision; 2], GraphError> {
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75 Ok(self[rev.0 as usize])
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76 }
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77 }