Valdemar Lorenzen
607 lines
22 KiB
Rust
607 lines
22 KiB
Rust
use std::{
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collections::BTreeMap,
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io,
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path::{Path, PathBuf},
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};
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use crate::{
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editor::{Editor, Input, Invocation},
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ruby::{Config, RubyPlugin, load_config},
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};
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/// Owns command eligibility and execution hosts together. Frontends can inspect
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/// the editor, but cannot independently mutate its plugin registry.
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pub struct EditorSession {
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editor: Editor,
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plugins: BTreeMap<String, RubyPlugin>,
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}
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impl EditorSession {
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/// File errors fail opening; config and plugin errors leave core editing
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/// available and are reported in the editor's message.
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pub fn open(
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file: Option<PathBuf>,
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capabilities: Vec<String>,
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config: Option<&Path>,
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) -> io::Result<Self> {
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let mut editor = Editor::open(file, capabilities)?;
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let mut notices = Vec::new();
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let config = match config {
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Some(path) => load_config(path).unwrap_or_else(|error| {
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notices.push(format!("config disabled: {error}"));
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Config::default()
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}),
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None => Config::default(),
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};
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let mut plugins = BTreeMap::new();
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for path in config.plugins {
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match RubyPlugin::start(&path) {
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Ok((plugin, feature)) => {
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let name = feature.name.clone();
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match editor.register(feature) {
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Ok(()) => {
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plugins.insert(name, plugin);
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}
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Err(error) => notices.push(format!("{}: {error}", path.display())),
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}
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}
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Err(error) => notices.push(format!("{}: {error}", path.display())),
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}
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}
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for binding in config.bindings {
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if let Err(error) = editor.bind(&binding.mode, &binding.key, binding.command) {
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notices.push(format!(
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"binding {} {:?}: {error}",
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binding.mode, binding.key
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));
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}
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}
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if notices.is_empty() {
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editor.set_message("Ready • --no-config uses default keybindings");
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} else {
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editor.set_message(notices.join(" | "));
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}
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Ok(Self { editor, plugins })
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}
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pub fn editor(&self) -> &Editor {
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&self.editor
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}
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pub fn handle(&mut self, input: Input) {
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if let Some(invocation) = self.editor.handle(input) {
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self.dispatch(invocation);
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}
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}
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pub fn execute(&mut self, command: &str) {
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if let Some(invocation) = self.editor.execute(command) {
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self.dispatch(invocation);
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}
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}
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fn dispatch(&mut self, invocation: Invocation) {
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let result = match self.plugins.get_mut(&invocation.plugin) {
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Some(plugin) => plugin
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.invoke(
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&invocation.command,
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&invocation.args,
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&self.editor.context(),
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)
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.and_then(|effects| self.editor.apply(effects)),
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None => Err("plugin host is unavailable".into()),
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};
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if let Err(error) = result {
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// Drop also stops a live host whose protocol-valid edits were rejected.
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drop(self.plugins.remove(&invocation.plugin));
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self.editor.disable_plugin(&invocation.plugin, &error);
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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 super::*;
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use std::{
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fs,
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sync::atomic::{AtomicU64, Ordering},
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};
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static NEXT_FIXTURE: AtomicU64 = AtomicU64::new(0);
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struct Fixture(PathBuf);
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impl Fixture {
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fn new() -> Self {
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let path = std::env::temp_dir().join(format!(
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"vamp-session-{}-{}",
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std::process::id(),
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NEXT_FIXTURE.fetch_add(1, Ordering::Relaxed),
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));
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fs::create_dir(&path).unwrap();
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Self(path)
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}
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fn file(&self, name: &str, text: &str) -> PathBuf {
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let path = self.0.join(name);
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fs::write(&path, text).unwrap();
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path
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}
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fn open(&self, config: &str) -> EditorSession {
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let config = self.file("config.rb", config);
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EditorSession::open(
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Some(self.0.join("buffer.txt")),
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vec!["text".into()],
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Some(&config),
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)
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.unwrap()
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}
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fn healthy(&self) {
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self.file(
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"healthy.rb",
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r#"
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Vamp.plugin "healthy", requires: ["text"]
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Vamp.command("healthy") { |editor, args| editor.replace "healthy #{args}" }
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"#,
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);
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}
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}
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impl Drop for Fixture {
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fn drop(&mut self) {
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let _ = fs::remove_dir_all(&self.0);
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}
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}
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#[test]
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fn startup_rejection_installs_no_commands_and_keeps_other_plugins_and_core() {
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let fixture = Fixture::new();
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fixture.healthy();
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fixture.file(
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"graphics.rb",
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r#"
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Vamp.plugin "graphics", requires: ["graphics"]
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Vamp.command("draw") { |editor, args| editor.insert "incompatible" }
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"#,
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);
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fixture.file(
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"collision.rb",
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r#"
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Vamp.plugin "collision", requires: ["text"]
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Vamp.command("leaked") { |editor, args| editor.insert "collision" }
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Vamp.command("q") { |editor, args| editor.insert "override" }
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"#,
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);
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let mut session = fixture.open(
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r#"
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Vamp.configure do |config|
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config.plugin "graphics.rb"
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config.plugin "collision.rb"
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config.plugin "missing.rb"
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config.plugin "healthy.rb"
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config.bind "g", "healthy"
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end
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"#,
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);
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assert!(
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session
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.editor()
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.message()
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.contains("unavailable capability: graphics")
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);
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assert!(
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session
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.editor()
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.message()
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.contains("Command already registered: q")
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);
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for command in ["draw", "leaked"] {
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session.execute(command);
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assert_eq!(
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session.editor().message(),
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format!("Unknown command: {command}")
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);
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assert_eq!(session.editor().lines(), &[String::new()]);
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}
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session.handle(Input::Char('g'));
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assert_eq!(session.editor().lines(), &["healthy "]);
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session.execute("w");
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assert_eq!(
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fs::read_to_string(fixture.0.join("buffer.txt")).unwrap(),
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"healthy "
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);
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session.execute("q");
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assert!(session.editor().should_quit());
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}
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#[test]
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fn rejected_effects_discard_entire_transaction_and_retire_commands_and_bindings() {
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let fixture = Fixture::new();
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fixture.healthy();
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fixture.file(
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"invalid.rb",
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r#"
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Vamp.plugin "invalid", requires: ["text"]
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Vamp.command "invalid" do |editor, args|
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editor.insert "partial"
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editor.message "\e"
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end
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Vamp.command("sibling") { |editor, args| editor.insert "must be retired too" }
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"#,
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);
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let mut session = fixture.open(
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r#"
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Vamp.configure do |config|
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config.plugin "invalid.rb"
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config.plugin "healthy.rb"
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config.bind "g", "invalid"
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end
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"#,
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);
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session.handle(Input::Char('g'));
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assert_eq!(session.editor().lines(), &[String::new()]);
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assert!(!session.editor().dirty());
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assert!(
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session
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.editor()
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.message()
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.contains("Plugin invalid disabled: Unsupported control character")
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);
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let message = session.editor().message().to_owned();
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session.handle(Input::Char('g'));
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assert_eq!(session.editor().message(), message);
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for command in ["invalid", "sibling"] {
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session.execute(command);
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assert_eq!(
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session.editor().message(),
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format!("Unknown command: {command}")
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);
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}
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session.execute("healthy survivor");
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assert_eq!(session.editor().lines(), &["healthy survivor"]);
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session.handle(Input::Char('u'));
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assert_eq!(session.editor().lines(), &[String::new()]);
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session.handle(Input::Char('u'));
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assert_eq!(session.editor().message(), "Nothing to undo");
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}
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#[test]
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fn callback_crash_and_timeout_retire_plugin_without_losing_core_editing() {
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for failure in ["raise 'callback failed'", "Process.exit!(7)", "sleep 30"] {
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let fixture = Fixture::new();
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fixture.healthy();
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fixture.file(
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"failing.rb",
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&format!(
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r#"
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Vamp.plugin "failing", requires: ["text"]
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Vamp.command "fail" do |editor, args|
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editor.insert "never commit"
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{failure}
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end
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"#
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),
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);
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let mut session = fixture.open(
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r#"
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Vamp.configure do |config|
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config.plugin "failing.rb"
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config.plugin "healthy.rb"
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config.bind "g", "fail"
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end
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"#,
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);
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session.execute("fail");
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assert_eq!(session.editor().lines(), &[String::new()]);
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assert!(
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session
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.editor()
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.message()
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.contains("Plugin failing disabled:")
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);
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session.execute("fail");
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assert_eq!(session.editor().message(), "Unknown command: fail");
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session.handle(Input::Char('g'));
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assert_eq!(session.editor().lines(), &[String::new()]);
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session.execute("healthy survivor");
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session.execute("w");
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session.handle(Input::Char('i'));
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session.handle(Input::Char('x'));
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session.handle(Input::Escape);
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session.execute("q");
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assert!(!session.editor().should_quit());
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session.execute("wq");
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assert!(session.editor().should_quit());
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assert_eq!(
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fs::read_to_string(fixture.0.join("buffer.txt")).unwrap(),
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"xhealthy survivor"
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);
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}
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}
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#[test]
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fn configured_bindings_preserve_modal_editing_history_and_literal_paste() {
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let fixture = Fixture::new();
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fixture.healthy();
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let mut session = fixture.open(
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r#"
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Vamp.configure do |config|
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config.plugin "healthy.rb"
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config.bind "n", config.core.insert_first_nonblank
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config.bind "i", nil
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config.bind "ctrl+r", config.core.redo
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config.bind "ctrl+c", config.core.normal, mode: config.modes.insert
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config.bind "esc", nil, mode: config.modes.insert
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config.bind "!", config.core.newline, mode: config.modes.insert
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config.bind "shift+x", nil, mode: config.modes.insert
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config.bind ":", nil
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config.bind "space", config.core.command
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config.bind "enter", nil, mode: config.modes.command
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config.bind "ctrl+x", config.core.submit, mode: config.modes.command
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config.bind "ctrl+c", config.core.normal, mode: config.modes.command
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config.bind "ctrl+h", config.core.backspace, mode: config.modes.command
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config.bind "g", config.core.undo
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config.bind "g", "healthy"
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config.bind "n", config.core.newline
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config.bind "unknown", config.core.undo
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config.bind "ctrl+f", "healthy", mode: config.modes.insert
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end
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"#,
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);
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session.handle(Input::Char('i'));
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assert_eq!(session.editor().mode(), crate::editor::Mode::Normal);
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session.handle(Input::Char('n'));
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for ch in "界Xab!".chars() {
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session.handle(Input::Char(ch));
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}
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assert_eq!(session.editor().lines(), &["界ab", ""]);
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session.handle(Input::Escape);
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assert_eq!(session.editor().mode(), crate::editor::Mode::Insert);
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session.handle(Input::Paste("X!".into()));
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assert_eq!(session.editor().lines(), &["界ab", "X!"]);
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session.handle(Input::Ctrl('C'));
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assert_eq!(session.editor().mode(), crate::editor::Mode::Normal);
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session.handle(Input::Char('u'));
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assert_eq!(session.editor().lines(), &["界ab", ""]);
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session.handle(Input::Char('u'));
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assert_eq!(session.editor().lines(), &[String::new()]);
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session.handle(Input::Ctrl('r'));
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session.handle(Input::Ctrl('r'));
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assert_eq!(session.editor().lines(), &["界ab", "X!"]);
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session.handle(Input::Char(':'));
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assert_eq!(session.editor().mode(), crate::editor::Mode::Normal);
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session.handle(Input::Char(' '));
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for ch in "w界".chars() {
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session.handle(Input::Char(ch));
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}
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session.handle(Input::Backspace);
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assert_eq!(session.editor().command_line(), "w");
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session.handle(Input::Enter);
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assert_eq!(session.editor().mode(), crate::editor::Mode::Command);
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session.handle(Input::Ctrl('x'));
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assert_eq!(
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fs::read_to_string(fixture.0.join("buffer.txt")).unwrap(),
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"界ab\nX!"
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);
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session.handle(Input::Char(' '));
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session.handle(Input::Char('q'));
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session.handle(Input::Ctrl('c'));
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assert_eq!(session.editor().mode(), crate::editor::Mode::Normal);
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assert!(session.editor().command_line().is_empty());
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assert!(!session.editor().should_quit());
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session.handle(Input::Char('g'));
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assert_eq!(session.editor().lines(), &["healthy "]);
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session.handle(Input::Char(' '));
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session.handle(Input::Char('q'));
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session.handle(Input::Ctrl('x'));
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assert!(!session.editor().should_quit());
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session.handle(Input::Char(' '));
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session.handle(Input::Char('q'));
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session.handle(Input::Char('!'));
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session.handle(Input::Ctrl('x'));
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assert!(session.editor().should_quit());
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}
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#[test]
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fn typed_visual_actions_copy_cut_paste_and_cancel_without_splitting_history() {
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let fixture = Fixture::new();
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fixture.file("buffer.txt", "one two");
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let mut session = fixture.open(
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r#"
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Vamp.configure do |config|
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config.bind "v", nil
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config.bind "ctrl+v", config.core.select
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config.bind "ctrl+c", config.core.copy, mode: config.modes.visual
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config.bind "ctrl+x", config.core.cut, mode: config.modes.visual
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config.bind "ctrl+g", config.core.normal, mode: config.modes.visual
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config.bind "ctrl+f", config.core.word_end, mode: config.modes.visual
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config.bind "ctrl+b", config.core.paste_before
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config.bind "ctrl+p", config.core.paste_after
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end
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"#,
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);
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session.handle(Input::Char('v'));
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assert_eq!(session.editor().mode(), crate::editor::Mode::Normal);
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session.handle(Input::Ctrl('v'));
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assert_eq!(session.editor().mode(), crate::editor::Mode::Visual);
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session.handle(Input::Ctrl('f'));
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assert_eq!(session.editor().selection().unwrap().end.column, 3);
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session.handle(Input::Ctrl('c'));
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assert_eq!(session.editor().mode(), crate::editor::Mode::Normal);
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assert!(!session.editor().dirty());
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session.handle(Input::Ctrl('p'));
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assert_eq!(session.editor().lines(), &["oonene two"]);
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session.handle(Input::Char('u'));
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assert_eq!(session.editor().lines(), &["one two"]);
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session.handle(Input::Ctrl('v'));
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session.handle(Input::Ctrl('f'));
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session.handle(Input::Ctrl('x'));
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assert_eq!(session.editor().lines(), &[" two"]);
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assert_eq!(session.editor().mode(), crate::editor::Mode::Normal);
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session.handle(Input::Ctrl('b'));
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assert_eq!(session.editor().lines(), &["one two"]);
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session.handle(Input::Char('u'));
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assert_eq!(session.editor().lines(), &[" two"]);
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session.handle(Input::Char('u'));
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assert_eq!(session.editor().lines(), &["one two"]);
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assert!(!session.editor().dirty());
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session.handle(Input::Ctrl('v'));
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session.handle(Input::Ctrl('g'));
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assert_eq!(session.editor().mode(), crate::editor::Mode::Normal);
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assert_eq!(session.editor().selection(), None);
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}
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|
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#[test]
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fn typed_word_motions_remap_keys_and_keep_insert_typing_in_one_undo_group() {
|
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let fixture = Fixture::new();
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fixture.file("buffer.txt", "foo...bar baz");
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let mut session = fixture.open(
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r#"
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Vamp.configure do |config|
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config.bind "w", nil
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config.bind "ctrl+f", config.core.word_next
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config.bind "ctrl+p", config.core.word_previous
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config.bind "ctrl+e", config.core.word_end
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config.bind "ctrl+a", config.core.big_word_next
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config.bind "ctrl+z", config.core.big_word_previous
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config.bind "ctrl+t", config.core.big_word_end
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config.bind "ctrl+b", config.core.word_previous, mode: config.modes.insert
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end
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"#,
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);
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session.handle(Input::Char('w'));
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assert_eq!(session.editor().cursor().column, 0);
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for (key, column) in [
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('f', 3),
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('e', 5),
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('f', 6),
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('p', 3),
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('z', 0),
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('a', 10),
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('t', 12),
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('z', 10),
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('z', 0),
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] {
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session.handle(Input::Ctrl(key));
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assert_eq!(session.editor().cursor().column, column, "{key}");
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}
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assert!(!session.editor().dirty());
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session.handle(Input::Char('i'));
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for ch in "wbeWBE".chars() {
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session.handle(Input::Char(ch));
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}
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session.handle(Input::Ctrl('b'));
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assert_eq!(session.editor().cursor().column, 0);
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session.handle(Input::Char('X'));
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session.handle(Input::Escape);
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assert_eq!(session.editor().lines(), &["XwbeWBEfoo...bar baz"]);
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session.handle(Input::Char('u'));
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assert_eq!(session.editor().lines(), &["foo...bar baz"]);
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assert!(!session.editor().dirty());
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}
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#[test]
|
|
fn typed_search_bindings_drive_navigation_and_the_search_prompt_only() {
|
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let fixture = Fixture::new();
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|
fixture.file("buffer.txt", "cat\ncat\ncat");
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|
let mut session = fixture.open(
|
|
r#"
|
|
Vamp.configure do |config|
|
|
config.bind "ctrl+f", config.core.search
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|
config.bind "ctrl+n", config.core.search_next
|
|
config.bind "ctrl+p", config.core.search_previous
|
|
config.bind "ctrl+x", config.core.submit, mode: config.modes.search
|
|
config.bind "ctrl+c", config.core.normal, mode: config.modes.search
|
|
config.bind "ctrl+h", config.core.backspace, mode: config.modes.search
|
|
config.bind "enter", nil, mode: config.modes.search
|
|
config.bind "/", nil
|
|
end
|
|
"#,
|
|
);
|
|
session.handle(Input::Char('/'));
|
|
assert_eq!(session.editor().mode(), crate::editor::Mode::Normal);
|
|
session.handle(Input::Ctrl('f'));
|
|
assert_eq!(session.editor().mode(), crate::editor::Mode::Search);
|
|
for ch in "cat界".chars() {
|
|
session.handle(Input::Char(ch));
|
|
}
|
|
session.handle(Input::Backspace);
|
|
session.handle(Input::Enter);
|
|
assert_eq!(session.editor().mode(), crate::editor::Mode::Search);
|
|
session.handle(Input::Ctrl('x'));
|
|
assert_eq!(session.editor().cursor().row, 1);
|
|
session.handle(Input::Ctrl('n'));
|
|
assert_eq!(session.editor().cursor().row, 2);
|
|
session.handle(Input::Ctrl('p'));
|
|
assert_eq!(session.editor().cursor().row, 1);
|
|
session.handle(Input::Ctrl('f'));
|
|
session.handle(Input::Char('q'));
|
|
session.handle(Input::Ctrl('c'));
|
|
session.handle(Input::Ctrl('n'));
|
|
assert_eq!(session.editor().cursor().row, 2);
|
|
assert!(!session.editor().dirty());
|
|
assert!(!session.editor().should_quit());
|
|
}
|
|
|
|
#[test]
|
|
fn typed_config_errors_discard_partial_bindings_and_leave_default_editing_available() {
|
|
let fixture = Fixture::new();
|
|
for (expression, error) in [
|
|
("config.core.reod", "NoMethodError"),
|
|
("config.modes.insret", "NoMethodError"),
|
|
(r#"config.bind "n", "core.insert""#, "TypeError"),
|
|
(r#"config.bind "n", nil, mode: "insert""#, "TypeError"),
|
|
(r#"config.bind "n", config.modes.insert"#, "TypeError"),
|
|
(
|
|
r#"config.bind "n", nil, mode: config.core.insert"#,
|
|
"TypeError",
|
|
),
|
|
(r#"config.core.redo.name = "core.undo""#, "FrozenError"),
|
|
(
|
|
r#"config.core.redo.name.replace("core.undo")"#,
|
|
"FrozenError",
|
|
),
|
|
(r#"config.modes.insert.name = "normal""#, "FrozenError"),
|
|
(
|
|
r#"config.modes.insert.name.replace("normal")"#,
|
|
"FrozenError",
|
|
),
|
|
] {
|
|
let mut session = fixture.open(&format!(
|
|
"Vamp.configure do |config|\n config.bind \"i\", nil\n {expression}\nend"
|
|
));
|
|
assert!(session.editor().message().contains(error), "{expression}");
|
|
session.handle(Input::Char('i'));
|
|
session.handle(Input::Char('界'));
|
|
session.handle(Input::Escape);
|
|
assert_eq!(session.editor().mode(), crate::editor::Mode::Normal);
|
|
assert_eq!(session.editor().lines(), &["界"], "{expression}");
|
|
session.handle(Input::Char('u'));
|
|
assert_eq!(session.editor().lines(), &[String::new()], "{expression}");
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn broken_config_falls_back_to_core_without_failing_the_session() {
|
|
let fixture = Fixture::new();
|
|
let mut session = fixture.open("raise 'broken config'");
|
|
assert!(
|
|
session
|
|
.editor()
|
|
.message()
|
|
.contains("config disabled: Ruby config: RuntimeError: broken config")
|
|
);
|
|
session.handle(Input::Char('i'));
|
|
session.handle(Input::Char('x'));
|
|
session.handle(Input::Escape);
|
|
session.execute("wq");
|
|
assert!(session.editor().should_quit());
|
|
assert_eq!(
|
|
fs::read_to_string(fixture.0.join("buffer.txt")).unwrap(),
|
|
"x"
|
|
);
|
|
}
|
|
}
|