just playing with tangled
ilyagr.bsky.social
1// Copyright 2023 The Jujutsu Authors
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// https://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use std::fmt::Debug;
16use std::io::Write as _;
17
18use jj_lib::default_index::AsCompositeIndex as _;
19use jj_lib::default_index::DefaultReadonlyIndex;
20
21use crate::cli_util::CommandHelper;
22use crate::command_error::internal_error;
23use crate::command_error::user_error;
24use crate::command_error::CommandError;
25use crate::ui::Ui;
26
27/// Show commit index stats
28#[derive(clap::Args, Clone, Debug)]
29pub struct DebugIndexArgs {}
30
31pub fn cmd_debug_index(
32 ui: &mut Ui,
33 command: &CommandHelper,
34 _args: &DebugIndexArgs,
35) -> Result<(), CommandError> {
36 // Resolve the operation without loading the repo, so this command won't
37 // update the index.
38 let workspace = command.load_workspace()?;
39 let repo_loader = workspace.repo_loader();
40 let op = command.resolve_operation(ui, repo_loader)?;
41 let index_store = repo_loader.index_store();
42 let index = index_store
43 .get_index_at_op(&op, repo_loader.store())
44 .map_err(internal_error)?;
45 if let Some(default_index) = index.as_any().downcast_ref::<DefaultReadonlyIndex>() {
46 let stats = default_index.as_composite().stats();
47 writeln!(ui.stdout(), "Number of commits: {}", stats.num_commits)?;
48 writeln!(ui.stdout(), "Number of merges: {}", stats.num_merges)?;
49 writeln!(
50 ui.stdout(),
51 "Max generation number: {}",
52 stats.max_generation_number
53 )?;
54 writeln!(ui.stdout(), "Number of heads: {}", stats.num_heads)?;
55 writeln!(ui.stdout(), "Number of changes: {}", stats.num_changes)?;
56 writeln!(ui.stdout(), "Stats per level:")?;
57 for (i, level) in stats.levels.iter().enumerate() {
58 writeln!(ui.stdout(), " Level {i}:")?;
59 writeln!(ui.stdout(), " Number of commits: {}", level.num_commits)?;
60 writeln!(ui.stdout(), " Name: {}", level.name.as_ref().unwrap())?;
61 }
62 } else {
63 return Err(user_error(format!(
64 "Cannot get stats for indexes of type '{}'",
65 index_store.name()
66 )));
67 }
68 Ok(())
69}