mirror of
https://github.com/nushell/nushell.git
synced 2025-04-16 09:18:21 +02:00
1422 lines
48 KiB
Rust
1422 lines
48 KiB
Rust
use crate::{
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ast::Block,
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debugger::{Debugger, NoopDebugger},
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engine::{
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description::{build_desc, Doccomments},
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CachedFile, Command, CommandType, EnvVars, OverlayFrame, ScopeFrame, Stack, StateDelta,
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Variable, Visibility, DEFAULT_OVERLAY_NAME,
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},
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eval_const::create_nu_constant,
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shell_error::io::IoError,
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BlockId, Category, Config, DeclId, FileId, GetSpan, Handlers, HistoryConfig, Module, ModuleId,
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OverlayId, ShellError, SignalAction, Signals, Signature, Span, SpanId, Type, Value, VarId,
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VirtualPathId,
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};
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use fancy_regex::Regex;
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use lru::LruCache;
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use nu_path::AbsolutePathBuf;
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use nu_utils::IgnoreCaseExt;
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use std::{
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collections::HashMap,
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num::NonZeroUsize,
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path::PathBuf,
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sync::{
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atomic::{AtomicBool, AtomicU32, Ordering},
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Arc, Mutex, MutexGuard, PoisonError,
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},
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};
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type PoisonDebuggerError<'a> = PoisonError<MutexGuard<'a, Box<dyn Debugger>>>;
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#[cfg(feature = "plugin")]
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use crate::{PluginRegistryFile, PluginRegistryItem, RegisteredPlugin};
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use super::{Jobs, ThreadJob};
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#[derive(Clone, Debug)]
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pub enum VirtualPath {
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File(FileId),
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Dir(Vec<VirtualPathId>),
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}
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pub struct ReplState {
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pub buffer: String,
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// A byte position, as `EditCommand::MoveToPosition` is also a byte position
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pub cursor_pos: usize,
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}
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pub struct IsDebugging(AtomicBool);
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impl IsDebugging {
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pub fn new(val: bool) -> Self {
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IsDebugging(AtomicBool::new(val))
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}
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}
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impl Clone for IsDebugging {
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fn clone(&self) -> Self {
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IsDebugging(AtomicBool::new(self.0.load(Ordering::Relaxed)))
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}
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}
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/// The core global engine state. This includes all global definitions as well as any global state that
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/// will persist for the whole session.
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///
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/// Declarations, variables, blocks, and other forms of data are held in the global state and referenced
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/// elsewhere using their IDs. These IDs are simply their index into the global state. This allows us to
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/// more easily handle creating blocks, binding variables and callsites, and more, because each of these
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/// will refer to the corresponding IDs rather than their definitions directly. At runtime, this means
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/// less copying and smaller structures.
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///
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/// Many of the larger objects in this structure are stored within `Arc` to decrease the cost of
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/// cloning `EngineState`. While `Arc`s are generally immutable, they can be modified using
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/// `Arc::make_mut`, which automatically clones to a new allocation if there are other copies of
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/// the `Arc` already in use, but will let us modify the `Arc` directly if we have the only
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/// reference to it.
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///
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/// Note that the runtime stack is not part of this global state. Runtime stacks are handled differently,
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/// but they also rely on using IDs rather than full definitions.
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#[derive(Clone)]
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pub struct EngineState {
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files: Vec<CachedFile>,
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pub(super) virtual_paths: Vec<(String, VirtualPath)>,
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vars: Vec<Variable>,
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decls: Arc<Vec<Box<dyn Command + 'static>>>,
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// The Vec is wrapped in Arc so that if we don't need to modify the list, we can just clone
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// the reference and not have to clone each individual Arc inside. These lists can be
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// especially long, so it helps
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pub(super) blocks: Arc<Vec<Arc<Block>>>,
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pub(super) modules: Arc<Vec<Arc<Module>>>,
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pub spans: Vec<Span>,
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doccomments: Doccomments,
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pub scope: ScopeFrame,
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signals: Signals,
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pub signal_handlers: Option<Handlers>,
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pub env_vars: Arc<EnvVars>,
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pub previous_env_vars: Arc<HashMap<String, Value>>,
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pub config: Arc<Config>,
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pub pipeline_externals_state: Arc<(AtomicU32, AtomicU32)>,
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pub repl_state: Arc<Mutex<ReplState>>,
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pub table_decl_id: Option<DeclId>,
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#[cfg(feature = "plugin")]
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pub plugin_path: Option<PathBuf>,
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#[cfg(feature = "plugin")]
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plugins: Vec<Arc<dyn RegisteredPlugin>>,
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config_path: HashMap<String, PathBuf>,
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pub history_enabled: bool,
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pub history_session_id: i64,
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// Path to the file Nushell is currently evaluating, or None if we're in an interactive session.
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pub file: Option<PathBuf>,
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pub regex_cache: Arc<Mutex<LruCache<String, Regex>>>,
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pub is_interactive: bool,
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pub is_login: bool,
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startup_time: i64,
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is_debugging: IsDebugging,
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pub debugger: Arc<Mutex<Box<dyn Debugger>>>,
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pub jobs: Arc<Mutex<Jobs>>,
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// The job being executed with this engine state, or None if main thread
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pub current_thread_job: Option<ThreadJob>,
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// When there are background jobs running, the interactive behavior of `exit` changes depending on
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// the value of this flag:
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// - if this is false, then a warning about running jobs is shown and `exit` enables this flag
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// - if this is true, then `exit` will `std::process::exit`
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//
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// This ensures that running exit twice will terminate the program correctly
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pub exit_warning_given: Arc<AtomicBool>,
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}
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// The max number of compiled regexes to keep around in a LRU cache, arbitrarily chosen
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const REGEX_CACHE_SIZE: usize = 100; // must be nonzero, otherwise will panic
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pub const NU_VARIABLE_ID: VarId = VarId::new(0);
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pub const IN_VARIABLE_ID: VarId = VarId::new(1);
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pub const ENV_VARIABLE_ID: VarId = VarId::new(2);
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// NOTE: If you add more to this list, make sure to update the > checks based on the last in the list
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// The first span is unknown span
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pub const UNKNOWN_SPAN_ID: SpanId = SpanId::new(0);
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impl EngineState {
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pub fn new() -> Self {
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Self {
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files: vec![],
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virtual_paths: vec![],
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vars: vec![
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Variable::new(Span::new(0, 0), Type::Any, false),
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Variable::new(Span::new(0, 0), Type::Any, false),
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Variable::new(Span::new(0, 0), Type::Any, false),
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Variable::new(Span::new(0, 0), Type::Any, false),
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Variable::new(Span::new(0, 0), Type::Any, false),
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],
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decls: Arc::new(vec![]),
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blocks: Arc::new(vec![]),
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modules: Arc::new(vec![Arc::new(Module::new(
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DEFAULT_OVERLAY_NAME.as_bytes().to_vec(),
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))]),
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spans: vec![Span::unknown()],
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doccomments: Doccomments::new(),
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// make sure we have some default overlay:
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scope: ScopeFrame::with_empty_overlay(
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DEFAULT_OVERLAY_NAME.as_bytes().to_vec(),
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ModuleId::new(0),
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false,
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),
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signal_handlers: None,
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signals: Signals::empty(),
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env_vars: Arc::new(
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[(DEFAULT_OVERLAY_NAME.to_string(), HashMap::new())]
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.into_iter()
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.collect(),
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),
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previous_env_vars: Arc::new(HashMap::new()),
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config: Arc::new(Config::default()),
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pipeline_externals_state: Arc::new((AtomicU32::new(0), AtomicU32::new(0))),
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repl_state: Arc::new(Mutex::new(ReplState {
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buffer: "".to_string(),
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cursor_pos: 0,
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})),
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table_decl_id: None,
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#[cfg(feature = "plugin")]
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plugin_path: None,
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#[cfg(feature = "plugin")]
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plugins: vec![],
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config_path: HashMap::new(),
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history_enabled: true,
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history_session_id: 0,
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file: None,
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regex_cache: Arc::new(Mutex::new(LruCache::new(
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NonZeroUsize::new(REGEX_CACHE_SIZE).expect("tried to create cache of size zero"),
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))),
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is_interactive: false,
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is_login: false,
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startup_time: -1,
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is_debugging: IsDebugging::new(false),
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debugger: Arc::new(Mutex::new(Box::new(NoopDebugger))),
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jobs: Arc::new(Mutex::new(Jobs::default())),
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current_thread_job: None,
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exit_warning_given: Arc::new(AtomicBool::new(false)),
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}
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}
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pub fn signals(&self) -> &Signals {
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&self.signals
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}
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pub fn reset_signals(&mut self) {
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self.signals.reset();
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if let Some(ref handlers) = self.signal_handlers {
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handlers.run(SignalAction::Reset);
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}
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}
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pub fn set_signals(&mut self, signals: Signals) {
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self.signals = signals;
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}
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/// Merges a `StateDelta` onto the current state. These deltas come from a system, like the parser, that
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/// creates a new set of definitions and visible symbols in the current scope. We make this transactional
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/// as there are times when we want to run the parser and immediately throw away the results (namely:
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/// syntax highlighting and completions).
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///
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/// When we want to preserve what the parser has created, we can take its output (the `StateDelta`) and
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/// use this function to merge it into the global state.
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pub fn merge_delta(&mut self, mut delta: StateDelta) -> Result<(), ShellError> {
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// Take the mutable reference and extend the permanent state from the working set
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self.files.extend(delta.files);
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self.virtual_paths.extend(delta.virtual_paths);
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self.vars.extend(delta.vars);
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self.spans.extend(delta.spans);
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self.doccomments.merge_with(delta.doccomments);
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// Avoid potentially cloning the Arcs if we aren't adding anything
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if !delta.decls.is_empty() {
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Arc::make_mut(&mut self.decls).extend(delta.decls);
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}
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if !delta.blocks.is_empty() {
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Arc::make_mut(&mut self.blocks).extend(delta.blocks);
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}
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if !delta.modules.is_empty() {
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Arc::make_mut(&mut self.modules).extend(delta.modules);
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}
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let first = delta.scope.remove(0);
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for (delta_name, delta_overlay) in first.clone().overlays {
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if let Some((_, existing_overlay)) = self
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.scope
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.overlays
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.iter_mut()
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.find(|(name, _)| name == &delta_name)
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{
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// Updating existing overlay
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for item in delta_overlay.decls.into_iter() {
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existing_overlay.decls.insert(item.0, item.1);
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}
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for item in delta_overlay.vars.into_iter() {
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existing_overlay.vars.insert(item.0, item.1);
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}
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for item in delta_overlay.modules.into_iter() {
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existing_overlay.modules.insert(item.0, item.1);
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}
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existing_overlay
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.visibility
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.merge_with(delta_overlay.visibility);
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} else {
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// New overlay was added to the delta
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self.scope.overlays.push((delta_name, delta_overlay));
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}
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}
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let mut activated_ids = self.translate_overlay_ids(&first);
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let mut removed_ids = vec![];
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for name in &first.removed_overlays {
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if let Some(overlay_id) = self.find_overlay(name) {
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removed_ids.push(overlay_id);
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}
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}
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// Remove overlays removed in delta
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self.scope
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.active_overlays
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.retain(|id| !removed_ids.contains(id));
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// Move overlays activated in the delta to be first
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self.scope
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.active_overlays
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.retain(|id| !activated_ids.contains(id));
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self.scope.active_overlays.append(&mut activated_ids);
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#[cfg(feature = "plugin")]
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if !delta.plugins.is_empty() {
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for plugin in std::mem::take(&mut delta.plugins) {
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// Connect plugins to the signal handlers
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if let Some(handlers) = &self.signal_handlers {
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plugin.clone().configure_signal_handler(handlers)?;
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}
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// Replace plugins that overlap in identity.
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if let Some(existing) = self
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.plugins
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.iter_mut()
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.find(|p| p.identity().name() == plugin.identity().name())
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{
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// Stop the existing plugin, so that the new plugin definitely takes over
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existing.stop()?;
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*existing = plugin;
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} else {
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self.plugins.push(plugin);
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}
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}
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}
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#[cfg(feature = "plugin")]
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if !delta.plugin_registry_items.is_empty() {
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// Update the plugin file with the new signatures.
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if self.plugin_path.is_some() {
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self.update_plugin_file(std::mem::take(&mut delta.plugin_registry_items))?;
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}
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}
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Ok(())
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}
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/// Merge the environment from the runtime Stack into the engine state
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pub fn merge_env(&mut self, stack: &mut Stack) -> Result<(), ShellError> {
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for mut scope in stack.env_vars.drain(..) {
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for (overlay_name, mut env) in Arc::make_mut(&mut scope).drain() {
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if let Some(env_vars) = Arc::make_mut(&mut self.env_vars).get_mut(&overlay_name) {
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// Updating existing overlay
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env_vars.extend(env.drain());
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} else {
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// Pushing a new overlay
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Arc::make_mut(&mut self.env_vars).insert(overlay_name, env);
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}
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}
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}
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let cwd = self.cwd(Some(stack))?;
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std::env::set_current_dir(cwd).map_err(|err| {
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IoError::new_internal(err.kind(), "Could not set current dir", crate::location!())
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})?;
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if let Some(config) = stack.config.take() {
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// If config was updated in the stack, replace it.
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self.config = config;
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// Make plugin GC config changes take effect immediately.
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#[cfg(feature = "plugin")]
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self.update_plugin_gc_configs(&self.config.plugin_gc);
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}
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Ok(())
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}
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pub fn has_overlay(&self, name: &[u8]) -> bool {
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self.scope
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.overlays
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.iter()
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.any(|(overlay_name, _)| name == overlay_name)
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}
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pub fn active_overlay_ids<'a, 'b>(
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&'b self,
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removed_overlays: &'a [Vec<u8>],
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) -> impl DoubleEndedIterator<Item = &'b OverlayId> + 'a
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where
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'b: 'a,
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{
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self.scope.active_overlays.iter().filter(|id| {
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!removed_overlays
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.iter()
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.any(|name| name == self.get_overlay_name(**id))
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})
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}
|
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pub fn active_overlays<'a, 'b>(
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&'b self,
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removed_overlays: &'a [Vec<u8>],
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) -> impl DoubleEndedIterator<Item = &'b OverlayFrame> + 'a
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where
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'b: 'a,
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{
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self.active_overlay_ids(removed_overlays)
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.map(|id| self.get_overlay(*id))
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}
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pub fn active_overlay_names<'a, 'b>(
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&'b self,
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removed_overlays: &'a [Vec<u8>],
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) -> impl DoubleEndedIterator<Item = &'b [u8]> + 'a
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where
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'b: 'a,
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{
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self.active_overlay_ids(removed_overlays)
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.map(|id| self.get_overlay_name(*id))
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}
|
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/// Translate overlay IDs from other to IDs in self
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pub fn translate_overlay_ids(&self, other: &ScopeFrame) -> Vec<OverlayId> {
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let other_names = other.active_overlays.iter().map(|other_id| {
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&other
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.overlays
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.get(other_id.get())
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.expect("internal error: missing overlay")
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.0
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});
|
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other_names
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.map(|other_name| {
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self.find_overlay(other_name)
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.expect("internal error: missing overlay")
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})
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.collect()
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}
|
|
|
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pub fn last_overlay_name(&self, removed_overlays: &[Vec<u8>]) -> &[u8] {
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self.active_overlay_names(removed_overlays)
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.last()
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.expect("internal error: no active overlays")
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}
|
|
|
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pub fn last_overlay(&self, removed_overlays: &[Vec<u8>]) -> &OverlayFrame {
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self.active_overlay_ids(removed_overlays)
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.last()
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.map(|id| self.get_overlay(*id))
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.expect("internal error: no active overlays")
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}
|
|
|
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pub fn get_overlay_name(&self, overlay_id: OverlayId) -> &[u8] {
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&self
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.scope
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.overlays
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.get(overlay_id.get())
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.expect("internal error: missing overlay")
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.0
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}
|
|
|
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pub fn get_overlay(&self, overlay_id: OverlayId) -> &OverlayFrame {
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&self
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|
.scope
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|
.overlays
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.get(overlay_id.get())
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.expect("internal error: missing overlay")
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.1
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}
|
|
|
|
pub fn render_env_vars(&self) -> HashMap<&str, &Value> {
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let mut result: HashMap<&str, &Value> = HashMap::new();
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|
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for overlay_name in self.active_overlay_names(&[]) {
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let name = String::from_utf8_lossy(overlay_name);
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if let Some(env_vars) = self.env_vars.get(name.as_ref()) {
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result.extend(env_vars.iter().map(|(k, v)| (k.as_str(), v)));
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}
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}
|
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|
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result
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}
|
|
|
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pub fn add_env_var(&mut self, name: String, val: Value) {
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let overlay_name = String::from_utf8_lossy(self.last_overlay_name(&[])).to_string();
|
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|
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if let Some(env_vars) = Arc::make_mut(&mut self.env_vars).get_mut(&overlay_name) {
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env_vars.insert(name, val);
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} else {
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Arc::make_mut(&mut self.env_vars)
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.insert(overlay_name, [(name, val)].into_iter().collect());
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}
|
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}
|
|
|
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pub fn get_env_var(&self, name: &str) -> Option<&Value> {
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for overlay_id in self.scope.active_overlays.iter().rev() {
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let overlay_name = String::from_utf8_lossy(self.get_overlay_name(*overlay_id));
|
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if let Some(env_vars) = self.env_vars.get(overlay_name.as_ref()) {
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if let Some(val) = env_vars.get(name) {
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return Some(val);
|
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}
|
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}
|
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}
|
|
|
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None
|
|
}
|
|
|
|
// Returns Some((name, value)) if found, None otherwise.
|
|
// When updating environment variables, make sure to use
|
|
// the same case (the returned "name") as the original
|
|
// environment variable name.
|
|
pub fn get_env_var_insensitive(&self, name: &str) -> Option<(&String, &Value)> {
|
|
for overlay_id in self.scope.active_overlays.iter().rev() {
|
|
let overlay_name = String::from_utf8_lossy(self.get_overlay_name(*overlay_id));
|
|
if let Some(env_vars) = self.env_vars.get(overlay_name.as_ref()) {
|
|
if let Some(v) = env_vars.iter().find(|(k, _)| k.eq_ignore_case(name)) {
|
|
return Some((v.0, v.1));
|
|
}
|
|
}
|
|
}
|
|
|
|
None
|
|
}
|
|
|
|
#[cfg(feature = "plugin")]
|
|
pub fn plugins(&self) -> &[Arc<dyn RegisteredPlugin>] {
|
|
&self.plugins
|
|
}
|
|
|
|
#[cfg(feature = "plugin")]
|
|
pub fn update_plugin_file(
|
|
&self,
|
|
updated_items: Vec<PluginRegistryItem>,
|
|
) -> Result<(), ShellError> {
|
|
// Updating the signatures plugin file with the added signatures
|
|
use std::fs::File;
|
|
|
|
let plugin_path = self
|
|
.plugin_path
|
|
.as_ref()
|
|
.ok_or_else(|| ShellError::GenericError {
|
|
error: "Plugin file path not set".into(),
|
|
msg: "".into(),
|
|
span: None,
|
|
help: Some("you may be running nu with --no-config-file".into()),
|
|
inner: vec![],
|
|
})?;
|
|
|
|
// Read the current contents of the plugin file if it exists
|
|
let mut contents = match File::open(plugin_path.as_path()) {
|
|
Ok(mut plugin_file) => PluginRegistryFile::read_from(&mut plugin_file, None),
|
|
Err(err) => {
|
|
if err.kind() == std::io::ErrorKind::NotFound {
|
|
Ok(PluginRegistryFile::default())
|
|
} else {
|
|
Err(ShellError::Io(IoError::new_internal_with_path(
|
|
err.kind(),
|
|
"Failed to open plugin file",
|
|
crate::location!(),
|
|
PathBuf::from(plugin_path),
|
|
)))
|
|
}
|
|
}
|
|
}?;
|
|
|
|
// Update the given signatures
|
|
for item in updated_items {
|
|
contents.upsert_plugin(item);
|
|
}
|
|
|
|
// Write it to the same path
|
|
let plugin_file = File::create(plugin_path.as_path()).map_err(|err| {
|
|
IoError::new_internal_with_path(
|
|
err.kind(),
|
|
"Failed to write plugin file",
|
|
crate::location!(),
|
|
PathBuf::from(plugin_path),
|
|
)
|
|
})?;
|
|
|
|
contents.write_to(plugin_file, None)
|
|
}
|
|
|
|
/// Update plugins with new garbage collection config
|
|
#[cfg(feature = "plugin")]
|
|
fn update_plugin_gc_configs(&self, plugin_gc: &crate::PluginGcConfigs) {
|
|
for plugin in &self.plugins {
|
|
plugin.set_gc_config(plugin_gc.get(plugin.identity().name()));
|
|
}
|
|
}
|
|
|
|
pub fn num_files(&self) -> usize {
|
|
self.files.len()
|
|
}
|
|
|
|
pub fn num_virtual_paths(&self) -> usize {
|
|
self.virtual_paths.len()
|
|
}
|
|
|
|
pub fn num_vars(&self) -> usize {
|
|
self.vars.len()
|
|
}
|
|
|
|
pub fn num_decls(&self) -> usize {
|
|
self.decls.len()
|
|
}
|
|
|
|
pub fn num_blocks(&self) -> usize {
|
|
self.blocks.len()
|
|
}
|
|
|
|
pub fn num_modules(&self) -> usize {
|
|
self.modules.len()
|
|
}
|
|
|
|
pub fn num_spans(&self) -> usize {
|
|
self.spans.len()
|
|
}
|
|
pub fn print_vars(&self) {
|
|
for var in self.vars.iter().enumerate() {
|
|
println!("var{}: {:?}", var.0, var.1);
|
|
}
|
|
}
|
|
|
|
pub fn print_decls(&self) {
|
|
for decl in self.decls.iter().enumerate() {
|
|
println!("decl{}: {:?}", decl.0, decl.1.signature());
|
|
}
|
|
}
|
|
|
|
pub fn print_blocks(&self) {
|
|
for block in self.blocks.iter().enumerate() {
|
|
println!("block{}: {:?}", block.0, block.1);
|
|
}
|
|
}
|
|
|
|
pub fn print_contents(&self) {
|
|
for cached_file in self.files.iter() {
|
|
let string = String::from_utf8_lossy(&cached_file.content);
|
|
println!("{string}");
|
|
}
|
|
}
|
|
|
|
/// Find the [`DeclId`](crate::DeclId) corresponding to a declaration with `name`.
|
|
///
|
|
/// Searches within active overlays, and filtering out overlays in `removed_overlays`.
|
|
pub fn find_decl(&self, name: &[u8], removed_overlays: &[Vec<u8>]) -> Option<DeclId> {
|
|
let mut visibility: Visibility = Visibility::new();
|
|
|
|
for overlay_frame in self.active_overlays(removed_overlays).rev() {
|
|
visibility.append(&overlay_frame.visibility);
|
|
|
|
if let Some(decl_id) = overlay_frame.get_decl(name) {
|
|
if visibility.is_decl_id_visible(&decl_id) {
|
|
return Some(decl_id);
|
|
}
|
|
}
|
|
}
|
|
|
|
None
|
|
}
|
|
|
|
/// Find the name of the declaration corresponding to `decl_id`.
|
|
///
|
|
/// Searches within active overlays, and filtering out overlays in `removed_overlays`.
|
|
pub fn find_decl_name(&self, decl_id: DeclId, removed_overlays: &[Vec<u8>]) -> Option<&[u8]> {
|
|
let mut visibility: Visibility = Visibility::new();
|
|
|
|
for overlay_frame in self.active_overlays(removed_overlays).rev() {
|
|
visibility.append(&overlay_frame.visibility);
|
|
|
|
if visibility.is_decl_id_visible(&decl_id) {
|
|
for (name, id) in overlay_frame.decls.iter() {
|
|
if id == &decl_id {
|
|
return Some(name);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
None
|
|
}
|
|
|
|
/// Find the [`OverlayId`](crate::OverlayId) corresponding to `name`.
|
|
///
|
|
/// Searches all overlays, not just active overlays. To search only in active overlays, use [`find_active_overlay`](EngineState::find_active_overlay)
|
|
pub fn find_overlay(&self, name: &[u8]) -> Option<OverlayId> {
|
|
self.scope.find_overlay(name)
|
|
}
|
|
|
|
/// Find the [`OverlayId`](crate::OverlayId) of the active overlay corresponding to `name`.
|
|
///
|
|
/// Searches only active overlays. To search in all overlays, use [`find_overlay`](EngineState::find_active_overlay)
|
|
pub fn find_active_overlay(&self, name: &[u8]) -> Option<OverlayId> {
|
|
self.scope.find_active_overlay(name)
|
|
}
|
|
|
|
/// Find the [`ModuleId`](crate::ModuleId) corresponding to `name`.
|
|
///
|
|
/// Searches within active overlays, and filtering out overlays in `removed_overlays`.
|
|
pub fn find_module(&self, name: &[u8], removed_overlays: &[Vec<u8>]) -> Option<ModuleId> {
|
|
for overlay_frame in self.active_overlays(removed_overlays).rev() {
|
|
if let Some(module_id) = overlay_frame.modules.get(name) {
|
|
return Some(*module_id);
|
|
}
|
|
}
|
|
|
|
None
|
|
}
|
|
|
|
pub fn get_module_comments(&self, module_id: ModuleId) -> Option<&[Span]> {
|
|
self.doccomments.get_module_comments(module_id)
|
|
}
|
|
|
|
#[cfg(feature = "plugin")]
|
|
pub fn plugin_decls(&self) -> impl Iterator<Item = &Box<dyn Command + 'static>> {
|
|
let mut unique_plugin_decls = HashMap::new();
|
|
|
|
// Make sure there are no duplicate decls: Newer one overwrites the older one
|
|
for decl in self.decls.iter().filter(|d| d.is_plugin()) {
|
|
unique_plugin_decls.insert(decl.name(), decl);
|
|
}
|
|
|
|
let mut plugin_decls: Vec<(&str, &Box<dyn Command>)> =
|
|
unique_plugin_decls.into_iter().collect();
|
|
|
|
// Sort the plugins by name so we don't end up with a random plugin file each time
|
|
plugin_decls.sort_by(|a, b| a.0.cmp(b.0));
|
|
plugin_decls.into_iter().map(|(_, decl)| decl)
|
|
}
|
|
|
|
pub fn which_module_has_decl(
|
|
&self,
|
|
decl_name: &[u8],
|
|
removed_overlays: &[Vec<u8>],
|
|
) -> Option<&[u8]> {
|
|
for overlay_frame in self.active_overlays(removed_overlays).rev() {
|
|
for (module_name, module_id) in overlay_frame.modules.iter() {
|
|
let module = self.get_module(*module_id);
|
|
if module.has_decl(decl_name) {
|
|
return Some(module_name);
|
|
}
|
|
}
|
|
}
|
|
|
|
None
|
|
}
|
|
|
|
pub fn find_commands_by_predicate(
|
|
&self,
|
|
mut predicate: impl FnMut(&[u8]) -> bool,
|
|
ignore_deprecated: bool,
|
|
) -> Vec<(DeclId, Vec<u8>, Option<String>, CommandType)> {
|
|
let mut output = vec![];
|
|
|
|
for overlay_frame in self.active_overlays(&[]).rev() {
|
|
for (name, decl_id) in &overlay_frame.decls {
|
|
if overlay_frame.visibility.is_decl_id_visible(decl_id) && predicate(name) {
|
|
let command = self.get_decl(*decl_id);
|
|
if ignore_deprecated && command.signature().category == Category::Removed {
|
|
continue;
|
|
}
|
|
output.push((
|
|
*decl_id,
|
|
name.clone(),
|
|
Some(command.description().to_string()),
|
|
command.command_type(),
|
|
));
|
|
}
|
|
}
|
|
}
|
|
|
|
output
|
|
}
|
|
|
|
pub fn get_span_contents(&self, span: Span) -> &[u8] {
|
|
for file in &self.files {
|
|
if file.covered_span.contains_span(span) {
|
|
return &file.content
|
|
[(span.start - file.covered_span.start)..(span.end - file.covered_span.start)];
|
|
}
|
|
}
|
|
&[0u8; 0]
|
|
}
|
|
|
|
/// Get the global config from the engine state.
|
|
///
|
|
/// Use [`Stack::get_config()`] instead whenever the `Stack` is available, as it takes into
|
|
/// account local changes to `$env.config`.
|
|
pub fn get_config(&self) -> &Arc<Config> {
|
|
&self.config
|
|
}
|
|
|
|
pub fn set_config(&mut self, conf: impl Into<Arc<Config>>) {
|
|
let conf = conf.into();
|
|
|
|
#[cfg(feature = "plugin")]
|
|
if conf.plugin_gc != self.config.plugin_gc {
|
|
// Make plugin GC config changes take effect immediately.
|
|
self.update_plugin_gc_configs(&conf.plugin_gc);
|
|
}
|
|
|
|
self.config = conf;
|
|
}
|
|
|
|
/// Fetch the configuration for a plugin
|
|
///
|
|
/// The `plugin` must match the registered name of a plugin. For `plugin add
|
|
/// nu_plugin_example` the plugin name to use will be `"example"`
|
|
pub fn get_plugin_config(&self, plugin: &str) -> Option<&Value> {
|
|
self.config.plugins.get(plugin)
|
|
}
|
|
|
|
/// Returns the configuration settings for command history or `None` if history is disabled
|
|
pub fn history_config(&self) -> Option<HistoryConfig> {
|
|
self.history_enabled.then(|| self.config.history)
|
|
}
|
|
|
|
pub fn get_var(&self, var_id: VarId) -> &Variable {
|
|
self.vars
|
|
.get(var_id.get())
|
|
.expect("internal error: missing variable")
|
|
}
|
|
|
|
pub fn get_constant(&self, var_id: VarId) -> Option<&Value> {
|
|
let var = self.get_var(var_id);
|
|
var.const_val.as_ref()
|
|
}
|
|
|
|
pub fn generate_nu_constant(&mut self) {
|
|
self.vars[NU_VARIABLE_ID.get()].const_val = Some(create_nu_constant(self, Span::unknown()));
|
|
}
|
|
|
|
pub fn get_decl(&self, decl_id: DeclId) -> &dyn Command {
|
|
self.decls
|
|
.get(decl_id.get())
|
|
.expect("internal error: missing declaration")
|
|
.as_ref()
|
|
}
|
|
|
|
/// Get all commands within scope, sorted by the commands' names
|
|
pub fn get_decls_sorted(&self, include_hidden: bool) -> Vec<(Vec<u8>, DeclId)> {
|
|
let mut decls_map = HashMap::new();
|
|
|
|
for overlay_frame in self.active_overlays(&[]) {
|
|
let new_decls = if include_hidden {
|
|
overlay_frame.decls.clone()
|
|
} else {
|
|
overlay_frame
|
|
.decls
|
|
.clone()
|
|
.into_iter()
|
|
.filter(|(_, id)| overlay_frame.visibility.is_decl_id_visible(id))
|
|
.collect()
|
|
};
|
|
|
|
decls_map.extend(new_decls);
|
|
}
|
|
|
|
let mut decls: Vec<(Vec<u8>, DeclId)> = decls_map.into_iter().collect();
|
|
|
|
decls.sort_by(|a, b| a.0.cmp(&b.0));
|
|
decls
|
|
}
|
|
|
|
pub fn get_signature(&self, decl: &dyn Command) -> Signature {
|
|
if let Some(block_id) = decl.block_id() {
|
|
*self.blocks[block_id.get()].signature.clone()
|
|
} else {
|
|
decl.signature()
|
|
}
|
|
}
|
|
|
|
/// Get signatures of all commands within scope with their decl ids.
|
|
pub fn get_signatures_and_declids(&self, include_hidden: bool) -> Vec<(Signature, DeclId)> {
|
|
self.get_decls_sorted(include_hidden)
|
|
.into_iter()
|
|
.map(|(_, id)| {
|
|
let decl = self.get_decl(id);
|
|
|
|
(self.get_signature(decl).update_from_command(decl), id)
|
|
})
|
|
.collect()
|
|
}
|
|
|
|
pub fn get_block(&self, block_id: BlockId) -> &Arc<Block> {
|
|
self.blocks
|
|
.get(block_id.get())
|
|
.expect("internal error: missing block")
|
|
}
|
|
|
|
/// Optionally get a block by id, if it exists
|
|
///
|
|
/// Prefer to use [`.get_block()`](Self::get_block) in most cases - `BlockId`s that don't exist
|
|
/// are normally a compiler error. This only exists to stop plugins from crashing the engine if
|
|
/// they send us something invalid.
|
|
pub fn try_get_block(&self, block_id: BlockId) -> Option<&Arc<Block>> {
|
|
self.blocks.get(block_id.get())
|
|
}
|
|
|
|
pub fn get_module(&self, module_id: ModuleId) -> &Module {
|
|
self.modules
|
|
.get(module_id.get())
|
|
.expect("internal error: missing module")
|
|
}
|
|
|
|
pub fn get_virtual_path(&self, virtual_path_id: VirtualPathId) -> &(String, VirtualPath) {
|
|
self.virtual_paths
|
|
.get(virtual_path_id.get())
|
|
.expect("internal error: missing virtual path")
|
|
}
|
|
|
|
pub fn next_span_start(&self) -> usize {
|
|
if let Some(cached_file) = self.files.last() {
|
|
cached_file.covered_span.end
|
|
} else {
|
|
0
|
|
}
|
|
}
|
|
|
|
pub fn files(
|
|
&self,
|
|
) -> impl DoubleEndedIterator<Item = &CachedFile> + ExactSizeIterator<Item = &CachedFile> {
|
|
self.files.iter()
|
|
}
|
|
|
|
pub fn add_file(&mut self, filename: Arc<str>, content: Arc<[u8]>) -> FileId {
|
|
let next_span_start = self.next_span_start();
|
|
let next_span_end = next_span_start + content.len();
|
|
|
|
let covered_span = Span::new(next_span_start, next_span_end);
|
|
|
|
self.files.push(CachedFile {
|
|
name: filename,
|
|
content,
|
|
covered_span,
|
|
});
|
|
|
|
FileId::new(self.num_files() - 1)
|
|
}
|
|
|
|
pub fn set_config_path(&mut self, key: &str, val: PathBuf) {
|
|
self.config_path.insert(key.to_string(), val);
|
|
}
|
|
|
|
pub fn get_config_path(&self, key: &str) -> Option<&PathBuf> {
|
|
self.config_path.get(key)
|
|
}
|
|
|
|
pub fn build_desc(&self, spans: &[Span]) -> (String, String) {
|
|
let comment_lines: Vec<&[u8]> = spans
|
|
.iter()
|
|
.map(|span| self.get_span_contents(*span))
|
|
.collect();
|
|
build_desc(&comment_lines)
|
|
}
|
|
|
|
pub fn build_module_desc(&self, module_id: ModuleId) -> Option<(String, String)> {
|
|
self.get_module_comments(module_id)
|
|
.map(|comment_spans| self.build_desc(comment_spans))
|
|
}
|
|
|
|
/// Returns the current working directory, which is guaranteed to be canonicalized.
|
|
///
|
|
/// Returns an empty String if $env.PWD doesn't exist.
|
|
#[deprecated(since = "0.92.3", note = "please use `EngineState::cwd()` instead")]
|
|
pub fn current_work_dir(&self) -> String {
|
|
self.cwd(None)
|
|
.map(|path| path.to_string_lossy().to_string())
|
|
.unwrap_or_default()
|
|
}
|
|
|
|
/// Returns the current working directory, which is guaranteed to be an
|
|
/// absolute path without trailing slashes (unless it's the root path), but
|
|
/// might contain symlink components.
|
|
///
|
|
/// If `stack` is supplied, also considers modifications to the working
|
|
/// directory on the stack that have yet to be merged into the engine state.
|
|
pub fn cwd(&self, stack: Option<&Stack>) -> Result<AbsolutePathBuf, ShellError> {
|
|
// Helper function to create a simple generic error.
|
|
fn error(msg: &str, cwd: impl AsRef<nu_path::Path>) -> ShellError {
|
|
ShellError::GenericError {
|
|
error: msg.into(),
|
|
msg: format!("$env.PWD = {}", cwd.as_ref().display()),
|
|
span: None,
|
|
help: Some("Use `cd` to reset $env.PWD into a good state".into()),
|
|
inner: vec![],
|
|
}
|
|
}
|
|
|
|
// Retrieve $env.PWD from the stack or the engine state.
|
|
let pwd = if let Some(stack) = stack {
|
|
stack.get_env_var(self, "PWD")
|
|
} else {
|
|
self.get_env_var("PWD")
|
|
};
|
|
|
|
let pwd = pwd.ok_or_else(|| error("$env.PWD not found", ""))?;
|
|
|
|
if let Ok(pwd) = pwd.as_str() {
|
|
let path = AbsolutePathBuf::try_from(pwd)
|
|
.map_err(|_| error("$env.PWD is not an absolute path", pwd))?;
|
|
|
|
// Technically, a root path counts as "having trailing slashes", but
|
|
// for the purpose of PWD, a root path is acceptable.
|
|
if path.parent().is_some() && nu_path::has_trailing_slash(path.as_ref()) {
|
|
Err(error("$env.PWD contains trailing slashes", &path))
|
|
} else if !path.exists() {
|
|
Err(error("$env.PWD points to a non-existent directory", &path))
|
|
} else if !path.is_dir() {
|
|
Err(error("$env.PWD points to a non-directory", &path))
|
|
} else {
|
|
Ok(path)
|
|
}
|
|
} else {
|
|
Err(error("$env.PWD is not a string", format!("{pwd:?}")))
|
|
}
|
|
}
|
|
|
|
/// Like `EngineState::cwd()`, but returns a String instead of a PathBuf for convenience.
|
|
pub fn cwd_as_string(&self, stack: Option<&Stack>) -> Result<String, ShellError> {
|
|
let cwd = self.cwd(stack)?;
|
|
cwd.into_os_string()
|
|
.into_string()
|
|
.map_err(|err| ShellError::NonUtf8Custom {
|
|
msg: format!(
|
|
"The current working directory is not a valid utf-8 string: {:?}",
|
|
err
|
|
),
|
|
span: Span::unknown(),
|
|
})
|
|
}
|
|
|
|
// TODO: see if we can completely get rid of this
|
|
pub fn get_file_contents(&self) -> &[CachedFile] {
|
|
&self.files
|
|
}
|
|
|
|
pub fn get_startup_time(&self) -> i64 {
|
|
self.startup_time
|
|
}
|
|
|
|
pub fn set_startup_time(&mut self, startup_time: i64) {
|
|
self.startup_time = startup_time;
|
|
}
|
|
|
|
pub fn activate_debugger(
|
|
&self,
|
|
debugger: Box<dyn Debugger>,
|
|
) -> Result<(), PoisonDebuggerError> {
|
|
let mut locked_debugger = self.debugger.lock()?;
|
|
*locked_debugger = debugger;
|
|
locked_debugger.activate();
|
|
self.is_debugging.0.store(true, Ordering::Relaxed);
|
|
Ok(())
|
|
}
|
|
|
|
pub fn deactivate_debugger(&self) -> Result<Box<dyn Debugger>, PoisonDebuggerError> {
|
|
let mut locked_debugger = self.debugger.lock()?;
|
|
locked_debugger.deactivate();
|
|
let ret = std::mem::replace(&mut *locked_debugger, Box::new(NoopDebugger));
|
|
self.is_debugging.0.store(false, Ordering::Relaxed);
|
|
Ok(ret)
|
|
}
|
|
|
|
pub fn is_debugging(&self) -> bool {
|
|
self.is_debugging.0.load(Ordering::Relaxed)
|
|
}
|
|
|
|
pub fn recover_from_panic(&mut self) {
|
|
if Mutex::is_poisoned(&self.repl_state) {
|
|
self.repl_state = Arc::new(Mutex::new(ReplState {
|
|
buffer: "".to_string(),
|
|
cursor_pos: 0,
|
|
}));
|
|
}
|
|
if Mutex::is_poisoned(&self.jobs) {
|
|
self.jobs = Arc::new(Mutex::new(Jobs::default()));
|
|
}
|
|
if Mutex::is_poisoned(&self.regex_cache) {
|
|
self.regex_cache = Arc::new(Mutex::new(LruCache::new(
|
|
NonZeroUsize::new(REGEX_CACHE_SIZE).expect("tried to create cache of size zero"),
|
|
)));
|
|
}
|
|
}
|
|
|
|
/// Add new span and return its ID
|
|
pub fn add_span(&mut self, span: Span) -> SpanId {
|
|
self.spans.push(span);
|
|
SpanId::new(self.num_spans() - 1)
|
|
}
|
|
|
|
/// Find ID of a span (should be avoided if possible)
|
|
pub fn find_span_id(&self, span: Span) -> Option<SpanId> {
|
|
self.spans
|
|
.iter()
|
|
.position(|sp| sp == &span)
|
|
.map(SpanId::new)
|
|
}
|
|
|
|
// Determines whether the current state is being held by a background job
|
|
pub fn is_background_job(&self) -> bool {
|
|
self.current_thread_job.is_some()
|
|
}
|
|
}
|
|
|
|
impl GetSpan for &EngineState {
|
|
/// Get existing span
|
|
fn get_span(&self, span_id: SpanId) -> Span {
|
|
*self
|
|
.spans
|
|
.get(span_id.get())
|
|
.expect("internal error: missing span")
|
|
}
|
|
}
|
|
|
|
impl Default for EngineState {
|
|
fn default() -> Self {
|
|
Self::new()
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod engine_state_tests {
|
|
use crate::engine::StateWorkingSet;
|
|
use std::str::{from_utf8, Utf8Error};
|
|
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn add_file_gives_id() {
|
|
let engine_state = EngineState::new();
|
|
let mut engine_state = StateWorkingSet::new(&engine_state);
|
|
let id = engine_state.add_file("test.nu".into(), &[]);
|
|
|
|
assert_eq!(id, FileId::new(0));
|
|
}
|
|
|
|
#[test]
|
|
fn add_file_gives_id_including_parent() {
|
|
let mut engine_state = EngineState::new();
|
|
let parent_id = engine_state.add_file("test.nu".into(), Arc::new([]));
|
|
|
|
let mut working_set = StateWorkingSet::new(&engine_state);
|
|
let working_set_id = working_set.add_file("child.nu".into(), &[]);
|
|
|
|
assert_eq!(parent_id, FileId::new(0));
|
|
assert_eq!(working_set_id, FileId::new(1));
|
|
}
|
|
|
|
#[test]
|
|
fn merge_states() -> Result<(), ShellError> {
|
|
let mut engine_state = EngineState::new();
|
|
engine_state.add_file("test.nu".into(), Arc::new([]));
|
|
|
|
let delta = {
|
|
let mut working_set = StateWorkingSet::new(&engine_state);
|
|
let _ = working_set.add_file("child.nu".into(), &[]);
|
|
working_set.render()
|
|
};
|
|
|
|
engine_state.merge_delta(delta)?;
|
|
|
|
assert_eq!(engine_state.num_files(), 2);
|
|
assert_eq!(&*engine_state.files[0].name, "test.nu");
|
|
assert_eq!(&*engine_state.files[1].name, "child.nu");
|
|
|
|
Ok(())
|
|
}
|
|
|
|
#[test]
|
|
fn list_variables() -> Result<(), Utf8Error> {
|
|
let varname = "something";
|
|
let varname_with_sigil = "$".to_owned() + varname;
|
|
let engine_state = EngineState::new();
|
|
let mut working_set = StateWorkingSet::new(&engine_state);
|
|
working_set.add_variable(
|
|
varname.as_bytes().into(),
|
|
Span { start: 0, end: 1 },
|
|
Type::Int,
|
|
false,
|
|
);
|
|
let variables = working_set
|
|
.list_variables()
|
|
.into_iter()
|
|
.map(from_utf8)
|
|
.collect::<Result<Vec<&str>, Utf8Error>>()?;
|
|
assert_eq!(variables, vec![varname_with_sigil]);
|
|
Ok(())
|
|
}
|
|
|
|
#[test]
|
|
fn get_plugin_config() {
|
|
let mut engine_state = EngineState::new();
|
|
|
|
assert!(
|
|
engine_state.get_plugin_config("example").is_none(),
|
|
"Unexpected plugin configuration"
|
|
);
|
|
|
|
let mut plugins = HashMap::new();
|
|
plugins.insert("example".into(), Value::string("value", Span::test_data()));
|
|
|
|
let mut config = Config::clone(engine_state.get_config());
|
|
config.plugins = plugins;
|
|
|
|
engine_state.set_config(config);
|
|
|
|
assert!(
|
|
engine_state.get_plugin_config("example").is_some(),
|
|
"Plugin configuration not found"
|
|
);
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod test_cwd {
|
|
//! Here're the test cases we need to cover:
|
|
//!
|
|
//! `EngineState::cwd()` computes the result from `self.env_vars["PWD"]` and
|
|
//! optionally `stack.env_vars["PWD"]`.
|
|
//!
|
|
//! PWD may be unset in either `env_vars`.
|
|
//! PWD should NOT be an empty string.
|
|
//! PWD should NOT be a non-string value.
|
|
//! PWD should NOT be a relative path.
|
|
//! PWD should NOT contain trailing slashes.
|
|
//! PWD may point to a directory or a symlink to directory.
|
|
//! PWD should NOT point to a file or a symlink to file.
|
|
//! PWD should NOT point to non-existent entities in the filesystem.
|
|
|
|
use crate::{
|
|
engine::{EngineState, Stack},
|
|
Value,
|
|
};
|
|
use nu_path::{assert_path_eq, AbsolutePath, Path};
|
|
use tempfile::{NamedTempFile, TempDir};
|
|
|
|
/// Creates a symlink. Works on both Unix and Windows.
|
|
#[cfg(any(unix, windows))]
|
|
fn symlink(
|
|
original: impl AsRef<AbsolutePath>,
|
|
link: impl AsRef<AbsolutePath>,
|
|
) -> std::io::Result<()> {
|
|
let original = original.as_ref();
|
|
let link = link.as_ref();
|
|
|
|
#[cfg(unix)]
|
|
{
|
|
std::os::unix::fs::symlink(original, link)
|
|
}
|
|
#[cfg(windows)]
|
|
{
|
|
if original.is_dir() {
|
|
std::os::windows::fs::symlink_dir(original, link)
|
|
} else {
|
|
std::os::windows::fs::symlink_file(original, link)
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Create an engine state initialized with the given PWD.
|
|
fn engine_state_with_pwd(path: impl AsRef<Path>) -> EngineState {
|
|
let mut engine_state = EngineState::new();
|
|
engine_state.add_env_var(
|
|
"PWD".into(),
|
|
Value::test_string(path.as_ref().to_str().unwrap()),
|
|
);
|
|
engine_state
|
|
}
|
|
|
|
/// Create a stack initialized with the given PWD.
|
|
fn stack_with_pwd(path: impl AsRef<Path>) -> Stack {
|
|
let mut stack = Stack::new();
|
|
stack.add_env_var(
|
|
"PWD".into(),
|
|
Value::test_string(path.as_ref().to_str().unwrap()),
|
|
);
|
|
stack
|
|
}
|
|
|
|
#[test]
|
|
fn pwd_not_set() {
|
|
let engine_state = EngineState::new();
|
|
engine_state.cwd(None).unwrap_err();
|
|
}
|
|
|
|
#[test]
|
|
fn pwd_is_empty_string() {
|
|
let engine_state = engine_state_with_pwd("");
|
|
engine_state.cwd(None).unwrap_err();
|
|
}
|
|
|
|
#[test]
|
|
fn pwd_is_non_string_value() {
|
|
let mut engine_state = EngineState::new();
|
|
engine_state.add_env_var("PWD".into(), Value::test_glob("*"));
|
|
engine_state.cwd(None).unwrap_err();
|
|
}
|
|
|
|
#[test]
|
|
fn pwd_is_relative_path() {
|
|
let engine_state = engine_state_with_pwd("./foo");
|
|
|
|
engine_state.cwd(None).unwrap_err();
|
|
}
|
|
|
|
#[test]
|
|
fn pwd_has_trailing_slash() {
|
|
let dir = TempDir::new().unwrap();
|
|
let engine_state = engine_state_with_pwd(dir.path().join(""));
|
|
|
|
engine_state.cwd(None).unwrap_err();
|
|
}
|
|
|
|
#[test]
|
|
fn pwd_points_to_root() {
|
|
#[cfg(windows)]
|
|
let root = Path::new(r"C:\");
|
|
#[cfg(not(windows))]
|
|
let root = Path::new("/");
|
|
|
|
let engine_state = engine_state_with_pwd(root);
|
|
let cwd = engine_state.cwd(None).unwrap();
|
|
assert_path_eq!(cwd, root);
|
|
}
|
|
|
|
#[test]
|
|
fn pwd_points_to_normal_file() {
|
|
let file = NamedTempFile::new().unwrap();
|
|
let engine_state = engine_state_with_pwd(file.path());
|
|
|
|
engine_state.cwd(None).unwrap_err();
|
|
}
|
|
|
|
#[test]
|
|
fn pwd_points_to_normal_directory() {
|
|
let dir = TempDir::new().unwrap();
|
|
let engine_state = engine_state_with_pwd(dir.path());
|
|
|
|
let cwd = engine_state.cwd(None).unwrap();
|
|
assert_path_eq!(cwd, dir.path());
|
|
}
|
|
|
|
#[test]
|
|
fn pwd_points_to_symlink_to_file() {
|
|
let file = NamedTempFile::new().unwrap();
|
|
let temp_file = AbsolutePath::try_new(file.path()).unwrap();
|
|
let dir = TempDir::new().unwrap();
|
|
let temp = AbsolutePath::try_new(dir.path()).unwrap();
|
|
|
|
let link = temp.join("link");
|
|
symlink(temp_file, &link).unwrap();
|
|
let engine_state = engine_state_with_pwd(&link);
|
|
|
|
engine_state.cwd(None).unwrap_err();
|
|
}
|
|
|
|
#[test]
|
|
fn pwd_points_to_symlink_to_directory() {
|
|
let dir = TempDir::new().unwrap();
|
|
let temp = AbsolutePath::try_new(dir.path()).unwrap();
|
|
|
|
let link = temp.join("link");
|
|
symlink(temp, &link).unwrap();
|
|
let engine_state = engine_state_with_pwd(&link);
|
|
|
|
let cwd = engine_state.cwd(None).unwrap();
|
|
assert_path_eq!(cwd, link);
|
|
}
|
|
|
|
#[test]
|
|
fn pwd_points_to_broken_symlink() {
|
|
let dir = TempDir::new().unwrap();
|
|
let temp = AbsolutePath::try_new(dir.path()).unwrap();
|
|
let other_dir = TempDir::new().unwrap();
|
|
let other_temp = AbsolutePath::try_new(other_dir.path()).unwrap();
|
|
|
|
let link = temp.join("link");
|
|
symlink(other_temp, &link).unwrap();
|
|
let engine_state = engine_state_with_pwd(&link);
|
|
|
|
drop(other_dir);
|
|
engine_state.cwd(None).unwrap_err();
|
|
}
|
|
|
|
#[test]
|
|
fn pwd_points_to_nonexistent_entity() {
|
|
let engine_state = engine_state_with_pwd(TempDir::new().unwrap().path());
|
|
|
|
engine_state.cwd(None).unwrap_err();
|
|
}
|
|
|
|
#[test]
|
|
fn stack_pwd_not_set() {
|
|
let dir = TempDir::new().unwrap();
|
|
let engine_state = engine_state_with_pwd(dir.path());
|
|
let stack = Stack::new();
|
|
|
|
let cwd = engine_state.cwd(Some(&stack)).unwrap();
|
|
assert_eq!(cwd, dir.path());
|
|
}
|
|
|
|
#[test]
|
|
fn stack_pwd_is_empty_string() {
|
|
let dir = TempDir::new().unwrap();
|
|
let engine_state = engine_state_with_pwd(dir.path());
|
|
let stack = stack_with_pwd("");
|
|
|
|
engine_state.cwd(Some(&stack)).unwrap_err();
|
|
}
|
|
|
|
#[test]
|
|
fn stack_pwd_points_to_normal_directory() {
|
|
let dir1 = TempDir::new().unwrap();
|
|
let dir2 = TempDir::new().unwrap();
|
|
let engine_state = engine_state_with_pwd(dir1.path());
|
|
let stack = stack_with_pwd(dir2.path());
|
|
|
|
let cwd = engine_state.cwd(Some(&stack)).unwrap();
|
|
assert_path_eq!(cwd, dir2.path());
|
|
}
|
|
|
|
#[test]
|
|
fn stack_pwd_points_to_normal_directory_with_symlink_components() {
|
|
let dir = TempDir::new().unwrap();
|
|
let temp = AbsolutePath::try_new(dir.path()).unwrap();
|
|
|
|
// `/tmp/dir/link` points to `/tmp/dir`, then we set PWD to `/tmp/dir/link/foo`
|
|
let link = temp.join("link");
|
|
symlink(temp, &link).unwrap();
|
|
let foo = link.join("foo");
|
|
std::fs::create_dir(temp.join("foo")).unwrap();
|
|
let engine_state = EngineState::new();
|
|
let stack = stack_with_pwd(&foo);
|
|
|
|
let cwd = engine_state.cwd(Some(&stack)).unwrap();
|
|
assert_path_eq!(cwd, foo);
|
|
}
|
|
}
|