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annotate rust/hg-core/src/revset.rs @ 46566:3c5a8b13206a

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copies-rust: fix reverted argument when merging tiny minor or major The argument where not passed in the right other. This is not caught by the test (yet) because it is a sub case of a special case. Am I adding this to my list of things to test. Using test directly in Rust would be appropriate here. However we don't have the ability to test this code that way yet, and I am focussing on other part of that work right now. Differential Revision: https://phab.mercurial-scm.org/D9657
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Wed, 23 Dec 2020 03:04:33 +0100
parents 4b381dbbf8b7
children df247f58ecee
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1 //! The revset query language
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2 //!
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3 //! <https://www.mercurial-scm.org/repo/hg/help/revsets>
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4
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5 use crate::repo::Repo;
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6 use crate::revlog::changelog::Changelog;
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7 use crate::revlog::revlog::{Revlog, RevlogError};
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8 use crate::revlog::NodePrefix;
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9 use crate::revlog::{Revision, NULL_REVISION};
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10
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11 /// Resolve a query string into a single revision.
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12 ///
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13 /// Only some of the revset language is implemented yet.
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14 pub fn resolve_single(
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15 input: &str,
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16 repo: &Repo,
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17 ) -> Result<Revision, RevlogError> {
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18 let changelog = Changelog::open(repo)?;
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19
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20 match resolve_rev_number_or_hex_prefix(input, &changelog.revlog) {
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21 Err(RevlogError::InvalidRevision) => {} // Try other syntax
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22 result => return result,
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23 }
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24
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25 if input == "null" {
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26 return Ok(NULL_REVISION);
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27 }
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28
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29 // TODO: support for the rest of the language here.
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30
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31 Err(RevlogError::InvalidRevision)
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32 }
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33
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34 /// Resolve the small subset of the language suitable for revlogs other than
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35 /// the changelog, such as in `hg debugdata --manifest` CLI argument.
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36 ///
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37 /// * A non-negative decimal integer for a revision number, or
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38 /// * An hexadecimal string, for the unique node ID that starts with this
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39 /// prefix
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40 pub fn resolve_rev_number_or_hex_prefix(
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41 input: &str,
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42 revlog: &Revlog,
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43 ) -> Result<Revision, RevlogError> {
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44 if let Ok(integer) = input.parse::<i32>() {
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45 if integer >= 0 && revlog.has_rev(integer) {
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46 return Ok(integer);
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47 }
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48 }
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49 if let Ok(prefix) = NodePrefix::from_hex(input) {
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50 return revlog.get_node_rev(prefix);
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51 }
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52 Err(RevlogError::InvalidRevision)
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53 }