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denoland-deno/cli/lsp/tsc.rs
Ben Noordhuis 2828690fc7
fix(lsp): fix deadlocks, use one big mutex (#9271) 
The LSP code had numerous places where competing threads could take out
out locks in different orders, making it very prone to deadlocks.
This commit sidesteps the entire issue by switching to a single lock.

The above is a little white lie: the Sources struct still uses a mutex
internally to avoid having to boil the ocean (because being honest about
what it does involves changing all its methods to `&mut self` but that
ripples out extensively...) I'll save that one for another day.
2021-01-26 10:55:04 +01:00

1677 lines
46 KiB
Rust
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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
use super::analysis::ResolvedDependency;
use super::language_server::StateSnapshot;
use super::text;
use super::text::LineIndex;
use super::utils;
use crate::media_type::MediaType;
use crate::tokio_util::create_basic_runtime;
use crate::tsc;
use crate::tsc::ResolveArgs;
use crate::tsc_config::TsConfig;
use deno_core::error::anyhow;
use deno_core::error::custom_error;
use deno_core::error::AnyError;
use deno_core::futures::Future;
use deno_core::json_op_sync;
use deno_core::serde::Deserialize;
use deno_core::serde::Serialize;
use deno_core::serde_json;
use deno_core::serde_json::json;
use deno_core::serde_json::Value;
use deno_core::url::Url;
use deno_core::JsRuntime;
use deno_core::ModuleSpecifier;
use deno_core::OpFn;
use deno_core::RuntimeOptions;
use lspower::lsp_types;
use regex::Captures;
use regex::Regex;
use std::borrow::Cow;
use std::collections::HashMap;
use std::thread;
use text_size::TextSize;
use tokio::sync::mpsc;
use tokio::sync::oneshot;
type Request = (
RequestMethod,
StateSnapshot,
oneshot::Sender<Result<Value, AnyError>>,
);
#[derive(Clone, Debug)]
pub struct TsServer(mpsc::UnboundedSender<Request>);
impl TsServer {
pub fn new() -> Self {
let (tx, mut rx) = mpsc::unbounded_channel::<Request>();
let _join_handle = thread::spawn(move || {
// TODO(@kitsonk) we need to allow displaying diagnostics here, but the
// current compiler snapshot sends them to stdio which would totally break
// the language server...
let mut ts_runtime = start(false).expect("could not start tsc");
let runtime = create_basic_runtime();
runtime.block_on(async {
while let Some((req, state_snapshot, tx)) = rx.recv().await {
let value = request(&mut ts_runtime, state_snapshot, req);
if tx.send(value).is_err() {
warn!("Unable to send result to client.");
}
}
})
});
Self(tx)
}
pub async fn request(
&self,
snapshot: StateSnapshot,
req: RequestMethod,
) -> Result<Value, AnyError> {
let (tx, rx) = oneshot::channel::<Result<Value, AnyError>>();
if self.0.send((req, snapshot, tx)).is_err() {
return Err(anyhow!("failed to send request to tsc thread"));
}
rx.await?
}
}
/// An lsp representation of an asset in memory, that has either been retrieved
/// from static assets built into Rust, or static assets built into tsc.
#[derive(Debug, Clone)]
pub struct AssetDocument {
pub text: String,
pub line_index: LineIndex,
}
/// Optionally returns an internal asset, first checking for any static assets
/// in Rust, then checking any previously retrieved static assets from the
/// isolate, and then finally, the tsc isolate itself.
pub async fn get_asset(
specifier: &ModuleSpecifier,
ts_server: &TsServer,
state_snapshot: &mut StateSnapshot,
) -> Result<Option<AssetDocument>, AnyError> {
let specifier_str = specifier.to_string().replace("asset:///", "");
if let Some(text) = tsc::get_asset(&specifier_str) {
let maybe_asset = Some(AssetDocument {
line_index: LineIndex::new(text),
text: text.to_string(),
});
state_snapshot
.assets
.insert(specifier.clone(), maybe_asset.clone());
Ok(maybe_asset)
} else {
let res = ts_server
.request(
state_snapshot.clone(),
RequestMethod::GetAsset(specifier.clone()),
)
.await?;
let maybe_text: Option<String> = serde_json::from_value(res)?;
let maybe_asset = if let Some(text) = maybe_text {
Some(AssetDocument {
line_index: LineIndex::new(&text),
text,
})
} else {
None
};
state_snapshot
.assets
.insert(specifier.clone(), maybe_asset.clone());
Ok(maybe_asset)
}
}
fn display_parts_to_string(
maybe_parts: Option<Vec<SymbolDisplayPart>>,
) -> Option<String> {
maybe_parts.map(|parts| {
parts
.into_iter()
.map(|p| p.text)
.collect::<Vec<String>>()
.join("")
})
}
fn get_tag_body_text(tag: &JSDocTagInfo) -> Option<String> {
tag.text.as_ref().map(|text| match tag.name.as_str() {
"example" => {
let caption_regex =
Regex::new(r"<caption>(.*?)</caption>\s*\r?\n((?:\s|\S)*)").unwrap();
if caption_regex.is_match(&text) {
caption_regex
.replace(text, |c: &Captures| {
format!("{}\n\n{}", &c[1], make_codeblock(&c[2]))
})
.to_string()
} else {
make_codeblock(text)
}
}
"author" => {
let email_match_regex = Regex::new(r"(.+)\s<([-.\w]+@[-.\w]+)>").unwrap();
email_match_regex
.replace(text, |c: &Captures| format!("{} {}", &c[1], &c[2]))
.to_string()
}
"default" => make_codeblock(text),
_ => replace_links(text),
})
}
fn get_tag_documentation(tag: &JSDocTagInfo) -> String {
match tag.name.as_str() {
"augments" | "extends" | "param" | "template" => {
if let Some(text) = &tag.text {
let part_regex = Regex::new(r"^(\S+)\s*-?\s*").unwrap();
let body: Vec<&str> = part_regex.split(&text).collect();
if body.len() == 3 {
let param = body[1];
let doc = body[2];
let label = format!("*@{}* `{}`", tag.name, param);
if doc.is_empty() {
return label;
}
if doc.contains('\n') {
return format!("{} \n{}", label, replace_links(doc));
} else {
return format!("{} - {}", label, replace_links(doc));
}
}
}
}
_ => (),
}
let label = format!("*@{}*", tag.name);
let maybe_text = get_tag_body_text(tag);
if let Some(text) = maybe_text {
if text.contains('\n') {
format!("{} \n{}", label, text)
} else {
format!("{} - {}", label, text)
}
} else {
label
}
}
fn make_codeblock(text: &str) -> String {
let codeblock_regex = Regex::new(r"^\s*[~`]{3}").unwrap();
if codeblock_regex.is_match(text) {
text.to_string()
} else {
format!("```\n{}\n```", text)
}
}
/// Replace JSDoc like links (`{@link http://example.com}`) with markdown links
fn replace_links(text: &str) -> String {
let jsdoc_links_regex = Regex::new(r"(?i)\{@(link|linkplain|linkcode) (https?://[^ |}]+?)(?:[| ]([^{}\n]+?))?\}").unwrap();
jsdoc_links_regex
.replace_all(text, |c: &Captures| match &c[1] {
"linkcode" => format!(
"[`{}`]({})",
if c.get(3).is_none() {
&c[2]
} else {
c[3].trim()
},
&c[2]
),
_ => format!(
"[{}]({})",
if c.get(3).is_none() {
&c[2]
} else {
c[3].trim()
},
&c[2]
),
})
.to_string()
}
#[derive(Debug, Clone, Deserialize)]
pub enum ScriptElementKind {
#[serde(rename = "")]
Unknown,
#[serde(rename = "warning")]
Warning,
#[serde(rename = "keyword")]
Keyword,
#[serde(rename = "script")]
ScriptElement,
#[serde(rename = "module")]
ModuleElement,
#[serde(rename = "class")]
ClassElement,
#[serde(rename = "local class")]
LocalClassElement,
#[serde(rename = "interface")]
InterfaceElement,
#[serde(rename = "type")]
TypeElement,
#[serde(rename = "enum")]
EnumElement,
#[serde(rename = "enum member")]
EnumMemberElement,
#[serde(rename = "var")]
VariableElement,
#[serde(rename = "local var")]
LocalVariableElement,
#[serde(rename = "function")]
FunctionElement,
#[serde(rename = "local function")]
LocalFunctionElement,
#[serde(rename = "method")]
MemberFunctionElement,
#[serde(rename = "getter")]
MemberGetAccessorElement,
#[serde(rename = "setter")]
MemberSetAccessorElement,
#[serde(rename = "property")]
MemberVariableElement,
#[serde(rename = "constructor")]
ConstructorImplementationElement,
#[serde(rename = "call")]
CallSignatureElement,
#[serde(rename = "index")]
IndexSignatureElement,
#[serde(rename = "construct")]
ConstructSignatureElement,
#[serde(rename = "parameter")]
ParameterElement,
#[serde(rename = "type parameter")]
TypeParameterElement,
#[serde(rename = "primitive type")]
PrimitiveType,
#[serde(rename = "label")]
Label,
#[serde(rename = "alias")]
Alias,
#[serde(rename = "const")]
ConstElement,
#[serde(rename = "let")]
LetElement,
#[serde(rename = "directory")]
Directory,
#[serde(rename = "external module name")]
ExternalModuleName,
#[serde(rename = "JSX attribute")]
JsxAttribute,
#[serde(rename = "string")]
String,
}
impl From<ScriptElementKind> for lsp_types::CompletionItemKind {
fn from(kind: ScriptElementKind) -> Self {
use lspower::lsp_types::CompletionItemKind;
match kind {
ScriptElementKind::PrimitiveType | ScriptElementKind::Keyword => {
CompletionItemKind::Keyword
}
ScriptElementKind::ConstElement => CompletionItemKind::Constant,
ScriptElementKind::LetElement
| ScriptElementKind::VariableElement
| ScriptElementKind::LocalVariableElement
| ScriptElementKind::Alias => CompletionItemKind::Variable,
ScriptElementKind::MemberVariableElement
| ScriptElementKind::MemberGetAccessorElement
| ScriptElementKind::MemberSetAccessorElement => {
CompletionItemKind::Field
}
ScriptElementKind::FunctionElement => CompletionItemKind::Function,
ScriptElementKind::MemberFunctionElement
| ScriptElementKind::ConstructSignatureElement
| ScriptElementKind::CallSignatureElement
| ScriptElementKind::IndexSignatureElement => CompletionItemKind::Method,
ScriptElementKind::EnumElement => CompletionItemKind::Enum,
ScriptElementKind::ModuleElement
| ScriptElementKind::ExternalModuleName => CompletionItemKind::Module,
ScriptElementKind::ClassElement | ScriptElementKind::TypeElement => {
CompletionItemKind::Class
}
ScriptElementKind::InterfaceElement => CompletionItemKind::Interface,
ScriptElementKind::Warning | ScriptElementKind::ScriptElement => {
CompletionItemKind::File
}
ScriptElementKind::Directory => CompletionItemKind::Folder,
ScriptElementKind::String => CompletionItemKind::Constant,
_ => CompletionItemKind::Property,
}
}
}
#[derive(Debug, Clone, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct TextSpan {
start: u32,
length: u32,
}
impl TextSpan {
pub fn to_range(&self, line_index: &LineIndex) -> lsp_types::Range {
lsp_types::Range {
start: line_index.position_tsc(self.start.into()),
end: line_index.position_tsc(TextSize::from(self.start + self.length)),
}
}
}
#[derive(Debug, Deserialize, Clone)]
#[serde(rename_all = "camelCase")]
pub struct SymbolDisplayPart {
text: String,
kind: String,
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct JSDocTagInfo {
name: String,
text: Option<String>,
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct QuickInfo {
kind: ScriptElementKind,
kind_modifiers: String,
text_span: TextSpan,
display_parts: Option<Vec<SymbolDisplayPart>>,
documentation: Option<Vec<SymbolDisplayPart>>,
tags: Option<Vec<JSDocTagInfo>>,
}
impl QuickInfo {
pub fn to_hover(&self, line_index: &LineIndex) -> lsp_types::Hover {
let mut contents = Vec::<lsp_types::MarkedString>::new();
if let Some(display_string) =
display_parts_to_string(self.display_parts.clone())
{
contents.push(lsp_types::MarkedString::from_language_code(
"typescript".to_string(),
display_string,
));
}
if let Some(documentation) =
display_parts_to_string(self.documentation.clone())
{
contents.push(lsp_types::MarkedString::from_markdown(documentation));
}
if let Some(tags) = &self.tags {
let tags_preview = tags
.iter()
.map(get_tag_documentation)
.collect::<Vec<String>>()
.join(" \n\n");
if !tags_preview.is_empty() {
contents.push(lsp_types::MarkedString::from_markdown(format!(
"\n\n{}",
tags_preview
)));
}
}
lsp_types::Hover {
contents: lsp_types::HoverContents::Array(contents),
range: Some(self.text_span.to_range(line_index)),
}
}
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct DocumentSpan {
text_span: TextSpan,
pub file_name: String,
original_text_span: Option<TextSpan>,
original_file_name: Option<String>,
context_span: Option<TextSpan>,
original_context_span: Option<TextSpan>,
}
impl DocumentSpan {
pub async fn to_link<F, Fut>(
&self,
line_index: &LineIndex,
index_provider: F,
) -> Option<lsp_types::LocationLink>
where
F: Fn(ModuleSpecifier) -> Fut,
Fut: Future<Output = Result<LineIndex, AnyError>>,
{
let target_specifier =
ModuleSpecifier::resolve_url(&self.file_name).unwrap();
if let Ok(target_line_index) = index_provider(target_specifier).await {
let target_uri = utils::normalize_file_name(&self.file_name).unwrap();
let (target_range, target_selection_range) =
if let Some(context_span) = &self.context_span {
(
context_span.to_range(&target_line_index),
self.text_span.to_range(&target_line_index),
)
} else {
(
self.text_span.to_range(&target_line_index),
self.text_span.to_range(&target_line_index),
)
};
let link = lsp_types::LocationLink {
origin_selection_range: Some(self.text_span.to_range(line_index)),
target_uri,
target_range,
target_selection_range,
};
Some(link)
} else {
None
}
}
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ImplementationLocation {
#[serde(flatten)]
pub document_span: DocumentSpan,
// ImplementationLocation props
kind: ScriptElementKind,
display_parts: Vec<SymbolDisplayPart>,
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct RenameLocation {
#[serde(flatten)]
document_span: DocumentSpan,
// RenameLocation props
prefix_text: Option<String>,
suffix_text: Option<String>,
}
pub struct RenameLocations {
pub locations: Vec<RenameLocation>,
}
impl RenameLocations {
pub async fn into_workspace_edit<F, Fut, V>(
self,
new_name: &str,
index_provider: F,
version_provider: V,
) -> Result<lsp_types::WorkspaceEdit, AnyError>
where
F: Fn(ModuleSpecifier) -> Fut,
Fut: Future<Output = Result<LineIndex, AnyError>>,
V: Fn(ModuleSpecifier) -> Option<i32>,
{
let mut text_document_edit_map: HashMap<Url, lsp_types::TextDocumentEdit> =
HashMap::new();
for location in self.locations.iter() {
let uri = utils::normalize_file_name(&location.document_span.file_name)?;
let specifier =
ModuleSpecifier::resolve_url(&location.document_span.file_name)?;
// ensure TextDocumentEdit for `location.file_name`.
if text_document_edit_map.get(&uri).is_none() {
text_document_edit_map.insert(
uri.clone(),
lsp_types::TextDocumentEdit {
text_document: lsp_types::OptionalVersionedTextDocumentIdentifier {
uri: uri.clone(),
version: version_provider(specifier.clone()),
},
edits: Vec::<
lsp_types::OneOf<
lsp_types::TextEdit,
lsp_types::AnnotatedTextEdit,
>,
>::new(),
},
);
}
// push TextEdit for ensured `TextDocumentEdit.edits`.
let document_edit = text_document_edit_map.get_mut(&uri).unwrap();
document_edit
.edits
.push(lsp_types::OneOf::Left(lsp_types::TextEdit {
range: location
.document_span
.text_span
.to_range(&index_provider(specifier.clone()).await?),
new_text: new_name.to_string(),
}));
}
Ok(lsp_types::WorkspaceEdit {
change_annotations: None,
changes: None,
document_changes: Some(lsp_types::DocumentChanges::Edits(
text_document_edit_map.values().cloned().collect(),
)),
})
}
}
#[derive(Debug, Deserialize)]
pub enum HighlightSpanKind {
#[serde(rename = "none")]
None,
#[serde(rename = "definition")]
Definition,
#[serde(rename = "reference")]
Reference,
#[serde(rename = "writtenReference")]
WrittenReference,
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct HighlightSpan {
file_name: Option<String>,
is_in_string: Option<bool>,
text_span: TextSpan,
context_span: Option<TextSpan>,
kind: HighlightSpanKind,
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct DefinitionInfo {
kind: ScriptElementKind,
name: String,
container_kind: Option<ScriptElementKind>,
container_name: Option<String>,
#[serde(flatten)]
pub document_span: DocumentSpan,
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct DefinitionInfoAndBoundSpan {
pub definitions: Option<Vec<DefinitionInfo>>,
text_span: TextSpan,
}
impl DefinitionInfoAndBoundSpan {
pub async fn to_definition<F, Fut>(
&self,
line_index: &LineIndex,
index_provider: F,
) -> Option<lsp_types::GotoDefinitionResponse>
where
F: Fn(ModuleSpecifier) -> Fut + Clone,
Fut: Future<Output = Result<LineIndex, AnyError>>,
{
if let Some(definitions) = &self.definitions {
let mut location_links = Vec::<lsp_types::LocationLink>::new();
for di in definitions {
if let Some(link) = di
.document_span
.to_link(line_index, index_provider.clone())
.await
{
location_links.push(link);
}
}
Some(lsp_types::GotoDefinitionResponse::Link(location_links))
} else {
None
}
}
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct DocumentHighlights {
file_name: String,
highlight_spans: Vec<HighlightSpan>,
}
impl DocumentHighlights {
pub fn to_highlight(
&self,
line_index: &LineIndex,
) -> Vec<lsp_types::DocumentHighlight> {
self
.highlight_spans
.iter()
.map(|hs| lsp_types::DocumentHighlight {
range: hs.text_span.to_range(line_index),
kind: match hs.kind {
HighlightSpanKind::WrittenReference => {
Some(lsp_types::DocumentHighlightKind::Write)
}
_ => Some(lsp_types::DocumentHighlightKind::Read),
},
})
.collect()
}
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ReferenceEntry {
is_write_access: bool,
pub is_definition: bool,
is_in_string: Option<bool>,
#[serde(flatten)]
pub document_span: DocumentSpan,
}
impl ReferenceEntry {
pub fn to_location(&self, line_index: &LineIndex) -> lsp_types::Location {
let uri =
utils::normalize_file_name(&self.document_span.file_name).unwrap();
lsp_types::Location {
uri,
range: self.document_span.text_span.to_range(line_index),
}
}
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct CompletionInfo {
entries: Vec<CompletionEntry>,
is_member_completion: bool,
}
impl CompletionInfo {
pub fn into_completion_response(
self,
line_index: &LineIndex,
) -> lsp_types::CompletionResponse {
let items = self
.entries
.into_iter()
.map(|entry| entry.into_completion_item(line_index))
.collect();
lsp_types::CompletionResponse::Array(items)
}
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct CompletionEntry {
kind: ScriptElementKind,
kind_modifiers: Option<String>,
name: String,
sort_text: String,
insert_text: Option<String>,
replacement_span: Option<TextSpan>,
has_action: Option<bool>,
source: Option<String>,
is_recommended: Option<bool>,
}
impl CompletionEntry {
pub fn into_completion_item(
self,
line_index: &LineIndex,
) -> lsp_types::CompletionItem {
let mut item = lsp_types::CompletionItem {
label: self.name,
kind: Some(self.kind.into()),
sort_text: Some(self.sort_text.clone()),
// TODO(lucacasonato): missing commit_characters
..Default::default()
};
if let Some(true) = self.is_recommended {
// Make sure isRecommended property always comes first
// https://github.com/Microsoft/vscode/issues/40325
item.preselect = Some(true);
} else if self.source.is_some() {
// De-prioritze auto-imports
// https://github.com/Microsoft/vscode/issues/40311
item.sort_text = Some("\u{ffff}".to_string() + &self.sort_text)
}
match item.kind {
Some(lsp_types::CompletionItemKind::Function)
| Some(lsp_types::CompletionItemKind::Method) => {
item.insert_text_format = Some(lsp_types::InsertTextFormat::Snippet);
}
_ => {}
}
let mut insert_text = self.insert_text;
let replacement_range: Option<lsp_types::Range> =
self.replacement_span.map(|span| span.to_range(line_index));
// TODO(lucacasonato): port other special cases from https://github.com/theia-ide/typescript-language-server/blob/fdf28313833cd6216d00eb4e04dc7f00f4c04f09/server/src/completion.ts#L49-L55
if let Some(kind_modifiers) = self.kind_modifiers {
if kind_modifiers.contains("\\optional\\") {
if insert_text.is_none() {
insert_text = Some(item.label.clone());
}
if item.filter_text.is_none() {
item.filter_text = Some(item.label.clone());
}
item.label += "?";
}
}
if let Some(insert_text) = insert_text {
if let Some(replacement_range) = replacement_range {
item.text_edit = Some(lsp_types::CompletionTextEdit::Edit(
lsp_types::TextEdit::new(replacement_range, insert_text),
));
} else {
item.insert_text = Some(insert_text);
}
}
item
}
}
#[derive(Debug, Clone, Deserialize)]
struct Response {
id: usize,
data: Value,
}
struct State<'a> {
asset: Option<String>,
last_id: usize,
response: Option<Response>,
state_snapshot: StateSnapshot,
snapshots: HashMap<(Cow<'a, str>, Cow<'a, str>), String>,
}
impl<'a> State<'a> {
fn new(state_snapshot: StateSnapshot) -> Self {
Self {
asset: None,
last_id: 1,
response: None,
state_snapshot,
snapshots: Default::default(),
}
}
}
/// If a snapshot is missing from the state cache, add it.
fn cache_snapshot(
state: &mut State,
specifier: String,
version: String,
) -> Result<(), AnyError> {
if !state
.snapshots
.contains_key(&(specifier.clone().into(), version.clone().into()))
{
let s = ModuleSpecifier::resolve_url(&specifier)?;
let content = state.state_snapshot.documents.content(&s)?.unwrap();
state
.snapshots
.insert((specifier.into(), version.into()), content);
}
Ok(())
}
fn op<F>(op_fn: F) -> Box<OpFn>
where
F: Fn(&mut State, Value) -> Result<Value, AnyError> + 'static,
{
json_op_sync(move |s, args, _bufs| {
let state = s.borrow_mut::<State>();
op_fn(state, args)
})
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
struct SourceSnapshotArgs {
specifier: String,
version: String,
}
/// The language service is dropping a reference to a source file snapshot, and
/// we can drop our version of that document.
fn dispose(state: &mut State, args: Value) -> Result<Value, AnyError> {
let v: SourceSnapshotArgs = serde_json::from_value(args)?;
state
.snapshots
.remove(&(v.specifier.into(), v.version.into()));
Ok(json!(true))
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
struct GetChangeRangeArgs {
specifier: String,
old_length: u32,
old_version: String,
version: String,
}
/// The language service wants to compare an old snapshot with a new snapshot to
/// determine what source hash changed.
fn get_change_range(state: &mut State, args: Value) -> Result<Value, AnyError> {
let v: GetChangeRangeArgs = serde_json::from_value(args.clone())?;
cache_snapshot(state, v.specifier.clone(), v.version.clone())?;
if let Some(current) = state
.snapshots
.get(&(v.specifier.clone().into(), v.version.into()))
{
if let Some(prev) = state
.snapshots
.get(&(v.specifier.clone().into(), v.old_version.clone().into()))
{
Ok(text::get_range_change(prev, current))
} else {
// when a local file is opened up in the editor, the compiler might
// already have a snapshot of it in memory, and will request it, but we
// now are working off in memory versions of the document, and so need
// to tell tsc to reset the whole document
Ok(json!({
"span": {
"start": 0,
"length": v.old_length,
},
"newLength": current.encode_utf16().count(),
}))
}
} else {
Err(custom_error(
"MissingSnapshot",
format!(
"The current snapshot version is missing.\n Args: \"{}\"",
args
),
))
}
}
fn get_length(state: &mut State, args: Value) -> Result<Value, AnyError> {
let v: SourceSnapshotArgs = serde_json::from_value(args)?;
let specifier = ModuleSpecifier::resolve_url(&v.specifier)?;
if state.state_snapshot.documents.contains(&specifier) {
cache_snapshot(state, v.specifier.clone(), v.version.clone())?;
let content = state
.snapshots
.get(&(v.specifier.into(), v.version.into()))
.unwrap();
Ok(json!(content.encode_utf16().count()))
} else {
let sources = &state.state_snapshot.sources;
Ok(json!(sources.get_length_utf16(&specifier).unwrap()))
}
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
struct GetTextArgs {
specifier: String,
version: String,
start: usize,
end: usize,
}
fn get_text(state: &mut State, args: Value) -> Result<Value, AnyError> {
let v: GetTextArgs = serde_json::from_value(args)?;
let specifier = ModuleSpecifier::resolve_url(&v.specifier)?;
let content = if state.state_snapshot.documents.contains(&specifier) {
cache_snapshot(state, v.specifier.clone(), v.version.clone())?;
state
.snapshots
.get(&(v.specifier.into(), v.version.into()))
.unwrap()
.clone()
} else {
let sources = &state.state_snapshot.sources;
sources.get_text(&specifier).unwrap()
};
Ok(json!(text::slice(&content, v.start..v.end)))
}
fn resolve(state: &mut State, args: Value) -> Result<Value, AnyError> {
let v: ResolveArgs = serde_json::from_value(args)?;
let mut resolved = Vec::<Option<(String, String)>>::new();
let referrer = ModuleSpecifier::resolve_url(&v.base)?;
let sources = &state.state_snapshot.sources;
if state.state_snapshot.documents.contains(&referrer) {
if let Some(dependencies) =
state.state_snapshot.documents.dependencies(&referrer)
{
for specifier in &v.specifiers {
if specifier.starts_with("asset:///") {
resolved.push(Some((
specifier.clone(),
MediaType::from(specifier).as_ts_extension(),
)))
} else if let Some(dependency) = dependencies.get(specifier) {
let resolved_import =
if let Some(resolved_import) = &dependency.maybe_type {
resolved_import.clone()
} else if let Some(resolved_import) = &dependency.maybe_code {
resolved_import.clone()
} else {
ResolvedDependency::Err("missing dependency".to_string())
};
if let ResolvedDependency::Resolved(resolved_specifier) =
resolved_import
{
if state.state_snapshot.documents.contains(&resolved_specifier)
|| sources.contains(&resolved_specifier)
{
let media_type = if let Some(media_type) =
sources.get_media_type(&resolved_specifier)
{
media_type
} else {
MediaType::from(&resolved_specifier)
};
resolved.push(Some((
resolved_specifier.to_string(),
media_type.as_ts_extension(),
)));
} else {
resolved.push(None);
}
} else {
resolved.push(None);
}
}
}
}
} else if sources.contains(&referrer) {
for specifier in &v.specifiers {
if let Some((resolved_specifier, media_type)) =
sources.resolve_import(specifier, &referrer)
{
resolved.push(Some((
resolved_specifier.to_string(),
media_type.as_ts_extension(),
)));
} else {
resolved.push(None);
}
}
} else {
return Err(custom_error(
"NotFound",
format!(
"the referring ({}) specifier is unexpectedly missing",
referrer
),
));
}
Ok(json!(resolved))
}
fn respond(state: &mut State, args: Value) -> Result<Value, AnyError> {
state.response = Some(serde_json::from_value(args)?);
Ok(json!(true))
}
fn script_names(state: &mut State, _args: Value) -> Result<Value, AnyError> {
Ok(json!(state.state_snapshot.documents.open_specifiers()))
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
struct ScriptVersionArgs {
specifier: String,
}
fn script_version(state: &mut State, args: Value) -> Result<Value, AnyError> {
let v: ScriptVersionArgs = serde_json::from_value(args)?;
let specifier = ModuleSpecifier::resolve_url(&v.specifier)?;
if let Some(version) = state.state_snapshot.documents.version(&specifier) {
return Ok(json!(version.to_string()));
} else {
let sources = &state.state_snapshot.sources;
if let Some(version) = sources.get_script_version(&specifier) {
return Ok(json!(version));
}
}
Ok(json!(None::<String>))
}
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
struct SetAssetArgs {
text: Option<String>,
}
fn set_asset(state: &mut State, args: Value) -> Result<Value, AnyError> {
let v: SetAssetArgs = serde_json::from_value(args)?;
state.asset = v.text;
Ok(json!(true))
}
/// Create and setup a JsRuntime based on a snapshot. It is expected that the
/// supplied snapshot is an isolate that contains the TypeScript language
/// server.
pub fn start(debug: bool) -> Result<JsRuntime, AnyError> {
let mut runtime = JsRuntime::new(RuntimeOptions {
startup_snapshot: Some(tsc::compiler_snapshot()),
..Default::default()
});
{
let op_state = runtime.op_state();
let mut op_state = op_state.borrow_mut();
op_state.put(State::new(StateSnapshot::default()));
}
runtime.register_op("op_dispose", op(dispose));
runtime.register_op("op_get_change_range", op(get_change_range));
runtime.register_op("op_get_length", op(get_length));
runtime.register_op("op_get_text", op(get_text));
runtime.register_op("op_resolve", op(resolve));
runtime.register_op("op_respond", op(respond));
runtime.register_op("op_script_names", op(script_names));
runtime.register_op("op_script_version", op(script_version));
runtime.register_op("op_set_asset", op(set_asset));
let init_config = json!({ "debug": debug });
let init_src = format!("globalThis.serverInit({});", init_config);
runtime.execute("[native code]", &init_src)?;
Ok(runtime)
}
#[derive(Debug, Serialize)]
#[serde(rename_all = "kebab-case")]
#[allow(dead_code)]
pub enum QuotePreference {
Auto,
Double,
Single,
}
#[derive(Debug, Serialize)]
#[serde(rename_all = "kebab-case")]
#[allow(dead_code)]
pub enum ImportModuleSpecifierPreference {
Auto,
Relative,
NonRelative,
}
#[derive(Debug, Serialize)]
#[serde(rename_all = "kebab-case")]
#[allow(dead_code)]
pub enum ImportModuleSpecifierEnding {
Auto,
Minimal,
Index,
Js,
}
#[derive(Debug, Serialize)]
#[serde(rename_all = "kebab-case")]
#[allow(dead_code)]
pub enum IncludePackageJsonAutoImports {
Auto,
On,
Off,
}
#[derive(Debug, Default, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct UserPreferences {
#[serde(skip_serializing_if = "Option::is_none")]
pub disable_suggestions: Option<bool>,
#[serde(skip_serializing_if = "Option::is_none")]
pub quote_preference: Option<QuotePreference>,
#[serde(skip_serializing_if = "Option::is_none")]
pub include_completions_for_module_exports: Option<bool>,
#[serde(skip_serializing_if = "Option::is_none")]
pub include_automatic_optional_chain_completions: Option<bool>,
#[serde(skip_serializing_if = "Option::is_none")]
pub include_completions_with_insert_text: Option<bool>,
#[serde(skip_serializing_if = "Option::is_none")]
pub import_module_specifier_preference:
Option<ImportModuleSpecifierPreference>,
#[serde(skip_serializing_if = "Option::is_none")]
pub import_module_specifier_ending: Option<ImportModuleSpecifierEnding>,
#[serde(skip_serializing_if = "Option::is_none")]
pub allow_text_changes_in_new_files: Option<bool>,
#[serde(skip_serializing_if = "Option::is_none")]
pub provide_prefix_and_suffix_text_for_rename: Option<bool>,
#[serde(skip_serializing_if = "Option::is_none")]
pub include_package_json_auto_imports: Option<IncludePackageJsonAutoImports>,
#[serde(skip_serializing_if = "Option::is_none")]
pub provide_refactor_not_applicable_reason: Option<bool>,
}
/// Methods that are supported by the Language Service in the compiler isolate.
#[derive(Debug)]
pub enum RequestMethod {
/// Configure the compilation settings for the server.
Configure(TsConfig),
/// Retrieve the text of an assets that exists in memory in the isolate.
GetAsset(ModuleSpecifier),
/// Return diagnostics for given file.
GetDiagnostics(Vec<ModuleSpecifier>),
/// Return quick info at position (hover information).
GetQuickInfo((ModuleSpecifier, u32)),
/// Return document highlights at position.
GetDocumentHighlights((ModuleSpecifier, u32, Vec<ModuleSpecifier>)),
/// Get document references for a specific position.
GetReferences((ModuleSpecifier, u32)),
/// Get declaration information for a specific position.
GetDefinition((ModuleSpecifier, u32)),
/// Get completion information at a given position (IntelliSense).
GetCompletions((ModuleSpecifier, u32, UserPreferences)),
/// Get implementation information for a specific position.
GetImplementation((ModuleSpecifier, u32)),
/// Get rename locations at a given position.
FindRenameLocations((ModuleSpecifier, u32, bool, bool, bool)),
}
impl RequestMethod {
pub fn to_value(&self, id: usize) -> Value {
match self {
RequestMethod::Configure(config) => json!({
"id": id,
"method": "configure",
"compilerOptions": config,
}),
RequestMethod::GetAsset(specifier) => json!({
"id": id,
"method": "getAsset",
"specifier": specifier,
}),
RequestMethod::GetDiagnostics(specifiers) => json!({
"id": id,
"method": "getDiagnostics",
"specifiers": specifiers,
}),
RequestMethod::GetQuickInfo((specifier, position)) => json!({
"id": id,
"method": "getQuickInfo",
"specifier": specifier,
"position": position,
}),
RequestMethod::GetDocumentHighlights((
specifier,
position,
files_to_search,
)) => json!({
"id": id,
"method": "getDocumentHighlights",
"specifier": specifier,
"position": position,
"filesToSearch": files_to_search,
}),
RequestMethod::GetReferences((specifier, position)) => json!({
"id": id,
"method": "getReferences",
"specifier": specifier,
"position": position,
}),
RequestMethod::GetDefinition((specifier, position)) => json!({
"id": id,
"method": "getDefinition",
"specifier": specifier,
"position": position,
}),
RequestMethod::GetCompletions((specifier, position, preferences)) => {
json!({
"id": id,
"method": "getCompletions",
"specifier": specifier,
"position": position,
"preferences": preferences,
})
}
RequestMethod::GetImplementation((specifier, position)) => json!({
"id": id,
"method": "getImplementation",
"specifier": specifier,
"position": position,
}),
RequestMethod::FindRenameLocations((
specifier,
position,
find_in_strings,
find_in_comments,
provide_prefix_and_suffix_text_for_rename,
)) => {
json!({
"id": id,
"method": "findRenameLocations",
"specifier": specifier,
"position": position,
"findInStrings": find_in_strings,
"findInComments": find_in_comments,
"providePrefixAndSuffixTextForRename": provide_prefix_and_suffix_text_for_rename
})
}
}
}
}
/// Send a request into a runtime and return the JSON value of the response.
pub fn request(
runtime: &mut JsRuntime,
state_snapshot: StateSnapshot,
method: RequestMethod,
) -> Result<Value, AnyError> {
let id = {
let op_state = runtime.op_state();
let mut op_state = op_state.borrow_mut();
let state = op_state.borrow_mut::<State>();
state.state_snapshot = state_snapshot;
state.last_id += 1;
state.last_id
};
let request_params = method.to_value(id);
let request_src = format!("globalThis.serverRequest({});", request_params);
runtime.execute("[native_code]", &request_src)?;
let op_state = runtime.op_state();
let mut op_state = op_state.borrow_mut();
let state = op_state.borrow_mut::<State>();
if let Some(response) = state.response.clone() {
state.response = None;
Ok(response.data)
} else {
Err(custom_error(
"RequestError",
"The response was not received for the request.",
))
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::lsp::documents::DocumentCache;
fn mock_state_snapshot(sources: Vec<(&str, &str, i32)>) -> StateSnapshot {
let mut documents = DocumentCache::default();
for (specifier, content, version) in sources {
let specifier = ModuleSpecifier::resolve_url(specifier)
.expect("failed to create specifier");
documents.open(specifier, version, content.to_string());
}
StateSnapshot {
assets: Default::default(),
documents,
sources: Default::default(),
}
}
fn setup(
debug: bool,
config: Value,
sources: Vec<(&str, &str, i32)>,
) -> (JsRuntime, StateSnapshot) {
let state_snapshot = mock_state_snapshot(sources.clone());
let mut runtime = start(debug).expect("could not start server");
let ts_config = TsConfig::new(config);
assert_eq!(
request(
&mut runtime,
state_snapshot.clone(),
RequestMethod::Configure(ts_config)
)
.expect("failed request"),
json!(true)
);
(runtime, state_snapshot)
}
#[test]
fn test_replace_links() {
let actual = replace_links(r"test {@link http://deno.land/x/mod.ts} test");
assert_eq!(
actual,
r"test [http://deno.land/x/mod.ts](http://deno.land/x/mod.ts) test"
);
let actual =
replace_links(r"test {@link http://deno.land/x/mod.ts a link} test");
assert_eq!(actual, r"test [a link](http://deno.land/x/mod.ts) test");
let actual =
replace_links(r"test {@linkcode http://deno.land/x/mod.ts a link} test");
assert_eq!(actual, r"test [`a link`](http://deno.land/x/mod.ts) test");
}
#[test]
fn test_project_configure() {
setup(
false,
json!({
"target": "esnext",
"module": "esnext",
"noEmit": true,
}),
vec![],
);
}
#[test]
fn test_project_reconfigure() {
let (mut runtime, state_snapshot) = setup(
false,
json!({
"target": "esnext",
"module": "esnext",
"noEmit": true,
}),
vec![],
);
let ts_config = TsConfig::new(json!({
"target": "esnext",
"module": "esnext",
"noEmit": true,
"lib": ["deno.ns", "deno.worker"]
}));
let result = request(
&mut runtime,
state_snapshot,
RequestMethod::Configure(ts_config),
);
assert!(result.is_ok());
let response = result.unwrap();
assert_eq!(response, json!(true));
}
#[test]
fn test_get_diagnostics() {
let (mut runtime, state_snapshot) = setup(
false,
json!({
"target": "esnext",
"module": "esnext",
"noEmit": true,
}),
vec![("file:///a.ts", r#"console.log("hello deno");"#, 1)],
);
let specifier = ModuleSpecifier::resolve_url("file:///a.ts")
.expect("could not resolve url");
let result = request(
&mut runtime,
state_snapshot,
RequestMethod::GetDiagnostics(vec![specifier]),
);
assert!(result.is_ok());
let response = result.unwrap();
assert_eq!(
response,
json!({
"file:///a.ts": [
{
"start": {
"line": 0,
"character": 0,
},
"end": {
"line": 0,
"character": 7
},
"fileName": "file:///a.ts",
"messageText": "Cannot find name 'console'. Do you need to change your target library? Try changing the `lib` compiler option to include 'dom'.",
"sourceLine": "console.log(\"hello deno\");",
"category": 1,
"code": 2584
}
]
})
);
}
#[test]
fn test_module_resolution() {
let (mut runtime, state_snapshot) = setup(
false,
json!({
"target": "esnext",
"module": "esnext",
"lib": ["deno.ns", "deno.window"],
"noEmit": true,
}),
vec![(
"file:///a.ts",
r#"
import { B } from "https://deno.land/x/b/mod.ts";
const b = new B();
console.log(b);
"#,
1,
)],
);
let specifier = ModuleSpecifier::resolve_url("file:///a.ts")
.expect("could not resolve url");
let result = request(
&mut runtime,
state_snapshot,
RequestMethod::GetDiagnostics(vec![specifier]),
);
assert!(result.is_ok());
let response = result.unwrap();
assert_eq!(response, json!({ "file:///a.ts": [] }));
}
#[test]
fn test_bad_module_specifiers() {
let (mut runtime, state_snapshot) = setup(
false,
json!({
"target": "esnext",
"module": "esnext",
"lib": ["deno.ns", "deno.window"],
"noEmit": true,
}),
vec![(
"file:///a.ts",
r#"
import { A } from ".";
"#,
1,
)],
);
let specifier = ModuleSpecifier::resolve_url("file:///a.ts")
.expect("could not resolve url");
let result = request(
&mut runtime,
state_snapshot,
RequestMethod::GetDiagnostics(vec![specifier]),
);
assert!(result.is_ok());
let response = result.unwrap();
assert_eq!(
response,
json!({
"file:///a.ts": [{
"start": {
"line": 1,
"character": 8
},
"end": {
"line": 1,
"character": 30
},
"fileName": "file:///a.ts",
"messageText": "\'A\' is declared but its value is never read.",
"sourceLine": " import { A } from \".\";",
"category": 2,
"code": 6133,
"reportsUnnecessary": true,
}]
})
);
}
#[test]
fn test_remote_modules() {
let (mut runtime, state_snapshot) = setup(
false,
json!({
"target": "esnext",
"module": "esnext",
"lib": ["deno.ns", "deno.window"],
"noEmit": true,
}),
vec![(
"file:///a.ts",
r#"
import { B } from "https://deno.land/x/b/mod.ts";
const b = new B();
console.log(b);
"#,
1,
)],
);
let specifier = ModuleSpecifier::resolve_url("file:///a.ts")
.expect("could not resolve url");
let result = request(
&mut runtime,
state_snapshot,
RequestMethod::GetDiagnostics(vec![specifier]),
);
assert!(result.is_ok());
let response = result.unwrap();
assert_eq!(response, json!({ "file:///a.ts": [] }));
}
#[test]
fn test_partial_modules() {
let (mut runtime, state_snapshot) = setup(
false,
json!({
"target": "esnext",
"module": "esnext",
"lib": ["deno.ns", "deno.window"],
"noEmit": true,
}),
vec![(
"file:///a.ts",
r#"
import {
Application,
Context,
Router,
Status,
} from "https://deno.land/x/oak@v6.3.2/mod.ts";
import * as test from
"#,
1,
)],
);
let specifier = ModuleSpecifier::resolve_url("file:///a.ts")
.expect("could not resolve url");
let result = request(
&mut runtime,
state_snapshot,
RequestMethod::GetDiagnostics(vec![specifier]),
);
assert!(result.is_ok());
let response = result.unwrap();
assert_eq!(
response,
json!({
"file:///a.ts": [{
"start": {
"line": 1,
"character": 8
},
"end": {
"line": 6,
"character": 55,
},
"fileName": "file:///a.ts",
"messageText": "All imports in import declaration are unused.",
"sourceLine": " import {",
"category": 2,
"code": 6192,
"reportsUnnecessary": true
}, {
"start": {
"line": 8,
"character": 29
},
"end": {
"line": 8,
"character": 29
},
"fileName": "file:///a.ts",
"messageText": "Expression expected.",
"sourceLine": " import * as test from",
"category": 1,
"code": 1109
}]
})
);
}
#[test]
fn test_no_debug_failure() {
let (mut runtime, state_snapshot) = setup(
false,
json!({
"target": "esnext",
"module": "esnext",
"lib": ["deno.ns", "deno.window"],
"noEmit": true,
}),
vec![("file:///a.ts", r#"const url = new URL("b.js", import."#, 1)],
);
let specifier = ModuleSpecifier::resolve_url("file:///a.ts")
.expect("could not resolve url");
let result = request(
&mut runtime,
state_snapshot,
RequestMethod::GetDiagnostics(vec![specifier]),
);
assert!(result.is_ok());
let response = result.unwrap();
assert_eq!(response, json!({}));
}
#[test]
fn test_request_asset() {
let (mut runtime, state_snapshot) = setup(
false,
json!({
"target": "esnext",
"module": "esnext",
"lib": ["deno.ns", "deno.window"],
"noEmit": true,
}),
vec![],
);
let specifier = ModuleSpecifier::resolve_url("asset:///lib.esnext.d.ts")
.expect("could not resolve url");
let result = request(
&mut runtime,
state_snapshot,
RequestMethod::GetAsset(specifier),
);
assert!(result.is_ok());
let response: Option<String> =
serde_json::from_value(result.unwrap()).unwrap();
assert!(response.is_some());
}
}
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