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annotate rust/hg-core/src/operations/dirstate_status.rs @ 45358:452ece5654c5

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hg-core: remove the `Operation` trait There is no way to currently define a trait which can both return references to `self` and to passed data, which is what we would need. Generic Associated Types may fix this and allow us to have a unified interface. See: rust #44265 Differential Revision: https://phab.mercurial-scm.org/D8862
author Antoine Cezar <antoine.cezar@octobus.net>
date Wed, 29 Jul 2020 10:08:09 +0200
parents 98817e5daca7
children 496537c9c1b4
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1 // dirstate_status.rs
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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::dirstate::status::{build_response, Dispatch, HgPathCow, Status};
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9 use crate::matchers::Matcher;
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10 use crate::{DirstateStatus, StatusError};
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11
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12 /// A tuple of the paths that need to be checked in the filelog because it's
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13 /// ambiguous whether they've changed, and the rest of the already dispatched
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14 /// files.
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15 pub type LookupAndStatus<'a> = (Vec<HgPathCow<'a>>, DirstateStatus<'a>);
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16
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17 impl<'a, M: Matcher + Sync> Status<'a, M> {
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18 pub(crate) fn run(&self) -> Result<LookupAndStatus<'a>, StatusError> {
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19 let (traversed_sender, traversed_receiver) =
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20 crossbeam::channel::unbounded();
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21
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22 // Step 1: check the files explicitly mentioned by the user
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23 let (work, mut results) = self.walk_explicit(traversed_sender.clone());
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24
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25 if !work.is_empty() {
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26 // Hashmaps are quite a bit slower to build than vecs, so only
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27 // build it if needed.
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28 let old_results = results.iter().cloned().collect();
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29
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30 // Step 2: recursively check the working directory for changes if
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31 // needed
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32 for (dir, dispatch) in work {
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33 match dispatch {
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34 Dispatch::Directory { was_file } => {
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35 if was_file {
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36 results.push((dir.to_owned(), Dispatch::Removed));
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37 }
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38 if self.options.list_ignored
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39 || self.options.list_unknown
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40 && !self.dir_ignore(&dir)
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41 {
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42 self.traverse(
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43 &dir,
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44 &old_results,
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45 &mut results,
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46 traversed_sender.clone(),
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47 )?;
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48 }
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49 }
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50 _ => {
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51 unreachable!("There can only be directories in `work`")
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52 }
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53 }
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54 }
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55 }
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56
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57 if !self.matcher.is_exact() {
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58 if self.options.list_unknown {
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59 self.handle_unknowns(&mut results)?;
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60 } else {
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61 // TODO this is incorrect, see issue6335
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62 // This requires a fix in both Python and Rust that can happen
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63 // with other pending changes to `status`.
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64 self.extend_from_dmap(&mut results);
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65 }
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66 }
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67
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68 drop(traversed_sender);
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69 let traversed = traversed_receiver.into_iter().collect();
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70
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71 Ok(build_response(results, traversed))
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72 }
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73 }