// Copyright 2020 The Jujutsu Authors//// Licensed under the Apache License, Version 2.0 (the "License");// you may not use this file except in compliance with the License.// You may obtain a copy of the License at//// https://www.apache.org/licenses/LICENSE-2.0//// Unless required by applicable law or agreed to in writing, software// distributed under the License is distributed on an "AS IS" BASIS,// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.// See the License for the specific language governing permissions and// limitations under the License. use std::collections::HashSet; use itertools::Itertools as _;use jj_lib::repo_path::RepoPathBuf;use tracing::instrument; use super::update_sparse_patterns_with;use crate::cli_util::CommandHelper;use crate::command_error::CommandError;use crate::ui::Ui; /// Update the patterns that are present in the working copy////// For example, if all you need is the `README.md` and the `lib/`/// directory, use `jj sparse set --clear --add README.md --add lib`./// If you no longer need the `lib` directory, use `jj sparse set --remove lib`.#[derive(clap::Args, Clone, Debug)]pub struct SparseSetArgs {    /// Patterns to add to the working copy    #[arg(        long,        value_hint = clap::ValueHint::AnyPath,        value_parser = |s: &str| RepoPathBuf::from_relative_path(s),    )]    add: Vec<RepoPathBuf>,    /// Patterns to remove from the working copy    #[arg(        long,        conflicts_with = "clear",        value_hint = clap::ValueHint::AnyPath,        value_parser = |s: &str| RepoPathBuf::from_relative_path(s),    )]    remove: Vec<RepoPathBuf>,    /// Include no files in the working copy (combine with --add)    #[arg(long)]    clear: bool,} #[instrument(skip_all)]pub fn cmd_sparse_set(    ui: &mut Ui,    command: &CommandHelper,    args: &SparseSetArgs,) -> Result<(), CommandError> {    let mut workspace_command = command.workspace_helper(ui)?;    update_sparse_patterns_with(ui, &mut workspace_command, |_ui, old_patterns| {        let mut new_patterns = HashSet::new();        if !args.clear {            new_patterns.extend(old_patterns.iter().cloned());            for path in &args.remove {                new_patterns.remove(path);            }        }        for path in &args.add {            new_patterns.insert(path.to_owned());        }        Ok(new_patterns.into_iter().sorted_unstable().collect())    })}