255 lines
9.2 KiB
Rust
255 lines
9.2 KiB
Rust
use super::installation::{npm_install_packages, npm_package_latest_version};
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use anyhow::{anyhow, Context, Result};
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use async_trait::async_trait;
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use client::http::HttpClient;
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use futures::StreamExt;
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use language::{LanguageServerName, LspAdapter};
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use smol::fs;
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use std::{any::Any, path::PathBuf, sync::Arc};
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use util::ResultExt;
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pub struct PythonLspAdapter;
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impl PythonLspAdapter {
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const BIN_PATH: &'static str = "node_modules/pyright/langserver.index.js";
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}
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#[async_trait]
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impl LspAdapter for PythonLspAdapter {
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async fn name(&self) -> LanguageServerName {
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LanguageServerName("pyright".into())
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}
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async fn server_args(&self) -> Vec<String> {
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vec!["--stdio".into()]
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}
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async fn fetch_latest_server_version(
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&self,
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_: Arc<dyn HttpClient>,
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) -> Result<Box<dyn 'static + Any + Send>> {
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Ok(Box::new(npm_package_latest_version("pyright").await?) as Box<_>)
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}
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async fn fetch_server_binary(
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&self,
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version: Box<dyn 'static + Send + Any>,
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_: Arc<dyn HttpClient>,
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container_dir: PathBuf,
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) -> Result<PathBuf> {
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let version = version.downcast::<String>().unwrap();
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let version_dir = container_dir.join(version.as_str());
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fs::create_dir_all(&version_dir)
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.await
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.context("failed to create version directory")?;
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let binary_path = version_dir.join(Self::BIN_PATH);
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if fs::metadata(&binary_path).await.is_err() {
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npm_install_packages([("pyright", version.as_str())], &version_dir).await?;
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if let Some(mut entries) = fs::read_dir(&container_dir).await.log_err() {
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while let Some(entry) = entries.next().await {
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if let Some(entry) = entry.log_err() {
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let entry_path = entry.path();
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if entry_path.as_path() != version_dir {
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fs::remove_dir_all(&entry_path).await.log_err();
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}
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}
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}
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}
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}
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Ok(binary_path)
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}
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async fn cached_server_binary(&self, container_dir: PathBuf) -> Option<PathBuf> {
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(|| async move {
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let mut last_version_dir = None;
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let mut entries = fs::read_dir(&container_dir).await?;
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while let Some(entry) = entries.next().await {
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let entry = entry?;
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if entry.file_type().await?.is_dir() {
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last_version_dir = Some(entry.path());
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}
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}
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let last_version_dir = last_version_dir.ok_or_else(|| anyhow!("no cached binary"))?;
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let bin_path = last_version_dir.join(Self::BIN_PATH);
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if bin_path.exists() {
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Ok(bin_path)
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} else {
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Err(anyhow!(
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"missing executable in directory {:?}",
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last_version_dir
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))
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}
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})()
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.await
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.log_err()
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}
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async fn label_for_completion(
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&self,
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item: &lsp::CompletionItem,
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language: &Arc<language::Language>,
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) -> Option<language::CodeLabel> {
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let label = &item.label;
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let grammar = language.grammar()?;
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let highlight_id = match item.kind? {
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lsp::CompletionItemKind::METHOD => grammar.highlight_id_for_name("function.method")?,
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lsp::CompletionItemKind::FUNCTION => grammar.highlight_id_for_name("function")?,
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lsp::CompletionItemKind::CLASS => grammar.highlight_id_for_name("type")?,
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lsp::CompletionItemKind::CONSTANT => grammar.highlight_id_for_name("constant")?,
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_ => return None,
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};
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Some(language::CodeLabel {
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text: label.clone(),
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runs: vec![(0..label.len(), highlight_id)],
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filter_range: 0..label.len(),
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})
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}
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async fn label_for_symbol(
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&self,
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name: &str,
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kind: lsp::SymbolKind,
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language: &Arc<language::Language>,
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) -> Option<language::CodeLabel> {
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let (text, filter_range, display_range) = match kind {
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lsp::SymbolKind::METHOD | lsp::SymbolKind::FUNCTION => {
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let text = format!("def {}():\n", name);
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let filter_range = 4..4 + name.len();
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let display_range = 0..filter_range.end;
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(text, filter_range, display_range)
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}
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lsp::SymbolKind::CLASS => {
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let text = format!("class {}:", name);
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let filter_range = 6..6 + name.len();
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let display_range = 0..filter_range.end;
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(text, filter_range, display_range)
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}
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lsp::SymbolKind::CONSTANT => {
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let text = format!("{} = 0", name);
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let filter_range = 0..name.len();
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let display_range = 0..filter_range.end;
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(text, filter_range, display_range)
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}
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_ => return None,
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};
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Some(language::CodeLabel {
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runs: language.highlight_text(&text.as_str().into(), display_range.clone()),
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text: text[display_range].to_string(),
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filter_range,
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})
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}
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}
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#[cfg(test)]
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mod tests {
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use gpui::{ModelContext, MutableAppContext};
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use language::{AutoindentMode, Buffer};
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use settings::Settings;
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#[gpui::test]
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fn test_python_autoindent(cx: &mut MutableAppContext) {
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cx.foreground().set_block_on_ticks(usize::MAX..=usize::MAX);
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let language = crate::languages::language("python", tree_sitter_python::language(), None);
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let mut settings = Settings::test(cx);
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settings.editor_overrides.tab_size = Some(2.try_into().unwrap());
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cx.set_global(settings);
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cx.add_model(|cx| {
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let mut buffer = Buffer::new(0, "", cx).with_language(language, cx);
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let append = |buffer: &mut Buffer, text: &str, cx: &mut ModelContext<Buffer>| {
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let ix = buffer.len();
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buffer.edit([(ix..ix, text)], Some(AutoindentMode::EachLine), cx);
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};
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// indent after "def():"
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append(&mut buffer, "def a():\n", cx);
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assert_eq!(buffer.text(), "def a():\n ");
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// preserve indent after blank line
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append(&mut buffer, "\n ", cx);
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assert_eq!(buffer.text(), "def a():\n \n ");
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// indent after "if"
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append(&mut buffer, "if a:\n ", cx);
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assert_eq!(buffer.text(), "def a():\n \n if a:\n ");
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// preserve indent after statement
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append(&mut buffer, "b()\n", cx);
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assert_eq!(buffer.text(), "def a():\n \n if a:\n b()\n ");
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// preserve indent after statement
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append(&mut buffer, "else", cx);
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assert_eq!(buffer.text(), "def a():\n \n if a:\n b()\n else");
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// dedent "else""
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append(&mut buffer, ":", cx);
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assert_eq!(buffer.text(), "def a():\n \n if a:\n b()\n else:");
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// indent lines after else
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append(&mut buffer, "\n", cx);
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assert_eq!(
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buffer.text(),
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"def a():\n \n if a:\n b()\n else:\n "
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);
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// indent after an open paren. the closing paren is not indented
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// because there is another token before it on the same line.
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append(&mut buffer, "foo(\n1)", cx);
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assert_eq!(
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buffer.text(),
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"def a():\n \n if a:\n b()\n else:\n foo(\n 1)"
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);
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// dedent the closing paren if it is shifted to the beginning of the line
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let argument_ix = buffer.text().find('1').unwrap();
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buffer.edit(
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[(argument_ix..argument_ix + 1, "")],
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Some(AutoindentMode::EachLine),
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cx,
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);
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assert_eq!(
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buffer.text(),
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"def a():\n \n if a:\n b()\n else:\n foo(\n )"
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);
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// preserve indent after the close paren
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append(&mut buffer, "\n", cx);
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assert_eq!(
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buffer.text(),
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"def a():\n \n if a:\n b()\n else:\n foo(\n )\n "
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);
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// manually outdent the last line
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let end_whitespace_ix = buffer.len() - 4;
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buffer.edit(
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[(end_whitespace_ix..buffer.len(), "")],
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Some(AutoindentMode::EachLine),
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cx,
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);
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assert_eq!(
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buffer.text(),
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"def a():\n \n if a:\n b()\n else:\n foo(\n )\n"
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);
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// preserve the newly reduced indentation on the next newline
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append(&mut buffer, "\n", cx);
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assert_eq!(
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buffer.text(),
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"def a():\n \n if a:\n b()\n else:\n foo(\n )\n\n"
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);
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// reset to a simple if statement
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buffer.edit([(0..buffer.len(), "if a:\n b(\n )")], None, cx);
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// dedent "else" on the line after a closing paren
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append(&mut buffer, "\n else:\n", cx);
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assert_eq!(buffer.text(), "if a:\n b(\n )\nelse:\n ");
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buffer
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});
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}
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}
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