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annotate rust/hg-core/src/testing.rs @ 52029:88aa21d654e5

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rust-dirstate: actually remember the identity This was an oversight that likely had no influence on anything since we have only been writing the dirstate for status. We will start writing the dirstate for more operations now, so we'll need this fixed.
author Rapha?l Gom?s <rgomes@octobus.net>
date Mon, 30 Sep 2024 17:43:51 +0200
parents 4c5f6e95df84
children
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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 }