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session.ts
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import {
arrayFrom,
arrayReverseIterator,
BufferEncoding,
CallHierarchyIncomingCall,
CallHierarchyItem,
CallHierarchyOutgoingCall,
cast,
CodeAction,
CodeActionCommand,
CodeFixAction,
CombinedCodeActions,
CompilerOptions,
CompletionEntry,
CompletionEntryData,
CompletionEntryDetails,
CompletionInfo,
computeLineAndCharacterOfPosition,
computeLineStarts,
concatenate,
createQueue,
createSet,
createTextSpan,
createTextSpanFromBounds,
Debug,
decodedTextSpanIntersectsWith,
deduplicate,
DefinitionInfo,
DefinitionInfoAndBoundSpan,
Diagnostic,
diagnosticCategoryName,
DiagnosticRelatedInformation,
displayPartsToString,
DocumentHighlights,
DocumentPosition,
DocumentSpan,
documentSpansEqual,
EmitOutput,
equateValues,
FileTextChanges,
filter,
find,
FindAllReferences,
first,
firstIterator,
firstOrUndefined,
flatMap,
flatMapToMutable,
flattenDiagnosticMessageText,
forEachNameInAccessChainWalkingLeft,
FormatCodeSettings,
formatting,
getDeclarationFromName,
getDeclarationOfKind,
getDocumentSpansEqualityComparer,
getEmitDeclarations,
getEntrypointsFromPackageJsonInfo,
getLineAndCharacterOfPosition,
getMappedContextSpan,
getMappedDocumentSpan,
getMappedLocation,
getNodeModulePathParts,
getNormalizedAbsolutePath,
getPackageNameFromTypesPackageName,
getPackageScopeForPath,
getSnapshotText,
getSupportedCodeFixes,
getTemporaryModuleResolutionState,
getTextOfIdentifierOrLiteral,
getTouchingPropertyName,
GoToDefinition,
HostCancellationToken,
identity,
ImplementationLocation,
ImportSpecifier,
isAccessExpression,
isArray,
isDeclarationFileName,
isIdentifier,
isString,
isStringLiteralLike,
JSDocLinkDisplayPart,
JSDocTagInfo,
LanguageServiceMode,
LineAndCharacter,
LinkedEditingInfo,
map,
mapDefined,
mapDefinedIterator,
mapIterator,
426F
mapOneOrMany,
memoize,
ModuleResolutionKind,
MultiMap,
NavigateToItem,
NavigationBarItem,
NavigationTree,
nodeModulesPathPart,
normalizePath,
OperationCanceledException,
OrganizeImportsMode,
OutliningSpan,
PasteEdits,
Path,
PerformanceEvent,
PossibleProgramFileInfo,
Program,
QuickInfo,
RefactorEditInfo,
ReferencedSymbol,
ReferencedSymbolDefinitionInfo,
ReferencedSymbolEntry,
ReferenceEntry,
removeFileExtension,
RenameInfo,
RenameLocation,
ScriptKind,
SelectionRange,
SemanticClassificationFormat,
SignatureHelpItem,
SignatureHelpItems,
singleIterator,
some,
SourceFile,
startsWith,
SymbolDisplayPart,
SyntaxKind,
TextChange,
TextInsertion,
TextRange,
TextSpan,
textSpanEnd,
timestamp,
toArray,
toFileNameLowerCase,
tracing,
unmangleScopedPackageName,
version,
WithMetadata,
} from "./_namespaces/ts.js";
import {
AuxiliaryProject,
CloseFileWatcherEvent,
ConfigFileDiagEvent,
ConfiguredProject,
ConfiguredProjectLoadKind,
convertFormatOptions,
convertScriptKindName,
convertUserPreferences,
CreateDirectoryWatcherEvent,
CreateFileWatcherEvent,
EmitResult,
emptyArray,
Errors,
GcTimer,
indent,
isConfigFile,
isConfiguredProject,
isDynamicFileName,
isExternalProject,
isInferredProject,
ITypingsInstaller,
LargeFileReferencedEvent,
Logger,
LogLevel,
Msg,
NormalizedPath,
nullTypingsInstaller,
Project,
ProjectInfoTelemetryEvent,
ProjectKind,
ProjectLanguageServiceStateEvent,
ProjectLoadingFinishEvent,
ProjectLoadingStartEvent,
ProjectService,
ProjectServiceEvent,
ProjectServiceEventHandler,
ProjectServiceOptions,
ProjectsUpdatedInBackgroundEvent,
ScriptInfo,
ScriptInfoOrConfig,
ServerHost,
stringifyIndented,
toNormalizedPath,
updateProjectIfDirty,
} from "./_namespaces/ts.server.js";
import * as protocol from "./protocol.js";
interface StackTraceError extends Error {
stack?: string;
}
export interface ServerCancellationToken extends HostCancellationToken {
setRequest(requestId: number): void;
resetRequest(requestId: number): void;
}
export const nullCancellationToken: ServerCancellationToken = {
isCancellationRequested: () => false,
setRequest: () => void 0,
resetRequest: () => void 0,
};
function hrTimeToMilliseconds(time: [number, number]): number {
const seconds = time[0];
const nanoseconds = time[1];
return ((1e9 * seconds) + nanoseconds) / 1000000.0;
}
function isDeclarationFileInJSOnlyNonConfiguredProject(project: Project, file: NormalizedPath) {
// Checking for semantic diagnostics is an expensive process. We want to avoid it if we
// know for sure it is not needed.
// For instance, .d.ts files injected by ATA automatically do not produce any relevant
// errors to a JS- only project.
//
// Note that configured projects can set skipLibCheck (on by default in jsconfig.json) to
// disable checking for declaration files. We only need to verify for inferred projects (e.g.
// miscellaneous context in VS) and external projects(e.g.VS.csproj project) with only JS
// files.
//
// We still want to check .js files in a JS-only inferred or external project (e.g. if the
// file has '// @ts-check').
if (
(isInferredProject(project) || isExternalProject(project)) &&
project.isJsOnlyProject()
) {
const scriptInfo = project.getScriptInfoForNormalizedPath(file);
return scriptInfo && !scriptInfo.isJavaScript();
}
return false;
}
function dtsChangeCanAffectEmit(compilationSettings: CompilerOptions) {
return getEmitDeclarations(compilationSettings) || !!compilationSettings.emitDecoratorMetadata;
}
function formatDiag(fileName: NormalizedPath, project: Project, diag: Diagnostic): protocol.Diagnostic {
const scriptInfo = project.getScriptInfoForNormalizedPath(fileName)!; // TODO: GH#18217
return {
start: scriptInfo.positionToLineOffset(diag.start!),
end: scriptInfo.positionToLineOffset(diag.start! + diag.length!), // TODO: GH#18217
text: flattenDiagnosticMessageText(diag.messageText, "\n"),
code: diag.code,
category: diagnosticCategoryName(diag),
reportsUnnecessary: diag.reportsUnnecessary,
reportsDeprecated: diag.reportsDeprecated,
source: diag.source,
relatedInformation: map(diag.relatedInformation, formatRelatedInformation),
};
}
function formatRelatedInformation(info: DiagnosticRelatedInformation): protocol.DiagnosticRelatedInformation {
if (!info.file) {
return {
message: flattenDiagnosticMessageText(info.messageText, "\n"),
category: diagnosticCategoryName(info),
code: info.code,
};
}
return {
span: {
start: convertToLocation(getLineAndCharacterOfPosition(info.file, info.start!)),
end: convertToLocation(getLineAndCharacterOfPosition(info.file, info.start! + info.length!)), // TODO: GH#18217
file: info.file.fileName,
},
message: flattenDiagnosticMessageText(info.messageText, "\n"),
category: diagnosticCategoryName(info),
code: info.code,
};
}
function convertToLocation(lineAndCharacter: LineAndCharacter): protocol.Location {
return { line: lineAndCharacter.line + 1, offset: lineAndCharacter.character + 1 };
}
/** @internal */
export function formatDiagnosticToProtocol(diag: Diagnostic, includeFileName: true): protocol.DiagnosticWithFileName;
/** @internal */
export function formatDiagnosticToProtocol(diag: Diagnostic, includeFileName: false): protocol.Diagnostic;
/** @internal */
export function formatDiagnosticToProtocol(diag: Diagnostic, includeFileName: boolean): protocol.Diagnostic | protocol.DiagnosticWithFileName {
const start = (diag.file && convertToLocation(getLineAndCharacterOfPosition(diag.file, diag.start!)))!; // TODO: GH#18217
const end = (diag.file && convertToLocation(getLineAndCharacterOfPosition(diag.file, diag.start! + diag.length!)))!; // TODO: GH#18217
const text = flattenDiagnosticMessageText(diag.messageText, "\n");
const { code, source } = diag;
const category = diagnosticCategoryName(diag);
const common = {
start,
end,
text,
code,
category,
reportsUnnecessary: diag.reportsUnnecessary,
reportsDeprecated: diag.reportsDeprecated,
source,
relatedInformation: map(diag.relatedInformation, formatRelatedInformation),
};
return includeFileName
? { ...common, fileName: diag.file && diag.file.fileName }
: common;
}
interface PendingErrorCheck {
fileName: NormalizedPath;
project: Project;
}
function allEditsBeforePos(edits: readonly TextChange[], pos: number): boolean {
return edits.every(edit => textSpanEnd(edit.span) < pos);
}
// CommandNames used to be exposed before TS 2.4 as a namespace
// In TS 2.4 we switched to an enum, keep this for backward compatibility
// The var assignment ensures that even though CommandTypes are a const enum
// we want to ensure the value is maintained in the out since the file is
// built using --preseveConstEnum.
/** @deprecated use ts.server.protocol.CommandTypes */
export type CommandNames = protocol.CommandTypes;
/** @deprecated use ts.server.protocol.CommandTypes */
export const CommandNames: any = (protocol as any).CommandTypes;
export function formatMessage<T extends protocol.Message>(msg: T, logger: Logger, byteLength: (s: string, encoding: BufferEncoding) => number, newLine: string): string {
const verboseLogging = logger.hasLevel(LogLevel.verbose);
const json = JSON.stringify(msg);
if (verboseLogging) {
logger.info(`${msg.type}:${stringifyIndented(msg)}`);
}
const len = byteLength(json, "utf8");
return `Content-Length: ${1 + len}\r\n\r\n${json}${newLine}`;
}
/**
* Allows to schedule next step in multistep operation
*/
interface NextStep {
immediate(actionType: string, action: () => void): void;
delay(actionType: string, ms: number, action: () => void): void;
}
/** @internal */
export type PerformanceData =
& Omit<protocol.PerformanceData, "diagnosticsDuration">
& { diagnosticsDuration?: Map<NormalizedPath, protocol.DiagnosticPerformanceData>; };
/**
* External capabilities used by multistep operation
*/
interface MultistepOperationHost {
getCurrentRequestId(): number;
getPerformanceData(): PerformanceData | undefined;
sendRequestCompletedEvent(requestId: number, performanceData: PerformanceData | undefined): void;
getServerHost(): ServerHost;
isCancellationRequested(): boolean;
executeWithRequestId(requestId: number, action: () => void, performanceData: PerformanceData | undefined): void;
logError(error: Error, message: string): void;
}
/**
* Represents operation that can schedule its next step to be executed later.
* Scheduling is done via instance of NextStep. If on current step subsequent step was not scheduled - operation is assumed to be completed.
*/
class MultistepOperation implements NextStep {
private requestId: number | undefined;
private performanceData: PerformanceData | undefined;
private timerHandle: any;
private immediateId: number | undefined;
constructor(private readonly operationHost: MultistepOperationHost) {}
public startNew(action: (next: NextStep) => void) {
this.complete();
this.requestId = this.operationHost.getCurrentRequestId();
this.executeAction(action);
}
private complete() {
if (this.requestId !== undefined) {
this.operationHost.sendRequestCompletedEvent(this.requestId, this.performanceData);
this.requestId = undefined;
}
this.setTimerHandle(undefined);
this.setImmediateId(undefined);
this.performanceData = undefined;
}
public immediate(actionType: string, action: () => void) {
const requestId = this.requestId!;
Debug.assert(requestId === this.operationHost.getCurrentRequestId(), "immediate: incorrect request id");
this.setImmediateId(
this.operationHost.getServerHost().setImmediate(() => {
this.immediateId = undefined;
this.operationHost.executeWithRequestId(requestId, () => this.executeAction(action), this.performanceData);
}, actionType),
);
}
public delay(actionType: string, ms: number, action: () => void) {
const requestId = this.requestId!;
Debug.assert(requestId === this.operationHost.getCurrentRequestId(), "delay: incorrect request id");
this.setTimerHandle(
this.operationHost.getServerHost().setTimeout(
() => {
this.timerHandle = undefined;
this.operationHost.executeWithRequestId(requestId, () => this.executeAction(action), this.performanceData);
},
ms,
actionType,
),
);
}
private executeAction(action: (next: NextStep) => void) {
let stop = false;
try {
if (this.operationHost.isCancellationRequested()) {
stop = true;
tracing?.instant(tracing.Phase.Session, "stepCanceled", { seq: this.requestId, early: true });
}
else {
tracing?.push(tracing.Phase.Session, "stepAction", { seq: this.requestId });
action(this);
tracing?.pop();
}
}
catch (e) {
// Cancellation or an error may have left incomplete events on the tracing stack.
tracing?.popAll();
stop = true;
// ignore cancellation request
if (e instanceof OperationCanceledException) {
tracing?.instant(tracing.Phase.Session, "stepCanceled", { seq: this.requestId });
}
else {
tracing?.instant(tracing.Phase.Session, "stepError", { seq: this.requestId, message: (e as Error).message });
this.operationHost.logError(e, `delayed processing of request ${this.requestId}`);
}
}
this.performanceData = this.operationHost.getPerformanceData();
if (stop || !this.hasPendingWork()) {
this.complete();
}
}
private setTimerHandle(timerHandle: any) {
if (this.timerHandle !== undefined) {
this.operationHost.getServerHost().clearTimeout(this.timerHandle);
}
this.timerHandle = timerHandle;
}
private setImmediateId(immediateId: number | undefined) {
if (this.immediateId !== undefined) {
this.operationHost.getServerHost().clearImmediate(this.immediateId);
}
this.immediateId = immediateId;
}
private hasPendingWork() {
return !!this.timerHandle || !!this.immediateId;
}
}
export type Event = <T extends object>(body: T, eventName: string) => void;
export interface EventSender {
event: Event;
}
/** @internal */
export function toEvent(eventName: string, body: object): protocol.Event {
return {
seq: 0,
type: "event",
event: eventName,
body,
};
}
type Projects = readonly Project[] | {
readonly projects: readonly Project[];
readonly symLinkedProjects: MultiMap<Path, Project>;
};
/**
* This helper function processes a list of projects and return the concatenated, sortd and deduplicated output of processing each project.
*/
function combineProjectOutput<T, U extends {}>(
defaultValue: T,
getValue: (path: Path) => T,
projects: Projects,
action: (project: Project, value: T) => readonly U[] | U | undefined,
): U[] {
const outputs = flatMapToMutable(isArray(projects) ? projects : projects.projects, project => action(project, defaultValue));
if (!isArray(projects) && projects.symLinkedProjects) {
projects.symLinkedProjects.forEach((projects, path) => {
const value = getValue(path);
outputs.push(...flatMap(projects, project => action(project, value)));
});
}
return deduplicate(outputs, equateValues);
}
interface ProjectNavigateToItems {
project: Project;
navigateToItems: readonly NavigateToItem[];
}
function createDocumentSpanSet(useCaseSensitiveFileNames: boolean): Set<DocumentSpan> {
return createSet(({ textSpan }) => textSpan.start + 100003 * textSpan.length, getDocumentSpansEqualityComparer(useCaseSensitiveFileNames));
}
function getRenameLocationsWorker(
projects: Projects,
defaultProject: Project,
initialLocation: DocumentPosition,
findInStrings: boolean,
findInComments: boolean,
preferences: protocol.UserPreferences,
useCaseSensitiveFileNames: boolean,
): readonly RenameLocation[] {
const perProjectResults = getPerProjectReferences(
projects,
defaultProject,
initialLocation,
getDefinitionLocation(defaultProject, initialLocation, /*isForRename*/ true),
mapDefinitionInProject,
(project, position) => project.getLanguageService().findRenameLocations(position.fileName, position.pos, findInStrings, findInComments, preferences),
(renameLocation, cb) => cb(documentSpanLocation(renameLocation)),
);
// No filtering or dedup'ing is required if there's exactly one project
if (isArray(perProjectResults)) {
return perProjectResults;
}
const results: RenameLocation[] = [];
const seen = createDocumentSpanSet(useCaseSensitiveFileNames);
perProjectResults.forEach((projectResults, project) => {
for (const result of projectResults) {
// If there's a mapped location, it'll appear in the results for another project
if (!seen.has(result) && !getMappedLocationForProject(documentSpanLocation(result), project)) {
results.push(result);
seen.add(result);
}
}
});
return results;
}
function getDefinitionLocation(defaultProject: Project, initialLocation: DocumentPosition, isForRename: boolean): DocumentPosition | undefined {
const infos = defaultProject.getLanguageService().getDefinitionAtPosition(initialLocation.fileName, initialLocation.pos, /*searchOtherFilesOnly*/ false, /*stopAtAlias*/ isForRename);
const info = infos && firstOrUndefined(infos);
3E0D
// Note that the value of `isLocal` may depend on whether or not the checker has run on the containing file
// (implying that FAR cascading behavior may depend on request order)
return info && !info.isLocal ? { fileName: info.fileName, pos: info.textSpan.start } : undefined;
}
function getReferencesWorker(
projects: Projects,
defaultProject: Project,
initialLocation: DocumentPosition,
useCaseSensitiveFileNames: boolean,
logger: Logger,
): readonly ReferencedSymbol[] {
const perProjectResults = getPerProjectReferences(
projects,
defaultProject,
initialLocation,
getDefinitionLocation(defaultProject, initialLocation, /*isForRename*/ false),
mapDefinitionInProject,
(project, position) => {
logger.info(`Finding references to ${position.fileName} position ${position.pos} in project ${project.getProjectName()}`);
return project.getLanguageService().findReferences(position.fileName, position.pos);
},
(referencedSymbol, cb) => {
cb(documentSpanLocation(referencedSymbol.definition));
for (const ref of referencedSymbol.references) {
cb(documentSpanLocation(ref));
}
},
);
// No re-mapping or isDefinition updatses are required if there's exactly one project
if (isArray(perProjectResults)) {
return perProjectResults;
}
// `isDefinition` is only (definitely) correct in `defaultProject` because we might
// have started the other project searches from related symbols. Propagate the
// correct results to all other projects.
const defaultProjectResults = perProjectResults.get(defaultProject);
if (defaultProjectResults?.[0]?.references[0]?.isDefinition === undefined) {
// Clear all isDefinition properties
perProjectResults.forEach(projectResults => {
for (const referencedSymbol of projectResults) {
for (const ref of referencedSymbol.references) {
delete ref.isDefinition;
}
}
});
}
else {
// Correct isDefinition properties from projects other than defaultProject
const knownSymbolSpans = createDocumentSpanSet(useCaseSensitiveFileNames);
for (const referencedSymbol of defaultProjectResults) {
for (const ref of referencedSymbol.references) {
if (ref.isDefinition) {
knownSymbolSpans.add(ref);
// One is enough - updateIsDefinitionOfReferencedSymbols will fill out the set based on symbols
break;
}
}
}
const updatedProjects = new Set<Project>();
while (true) {
let progress = false;
perProjectResults.forEach((referencedSymbols, project) => {
if (updatedProjects.has(project)) return;
const updated = project.getLanguageService().updateIsDefinitionOfReferencedSymbols(referencedSymbols, knownSymbolSpans);
if (updated) {
updatedProjects.add(project);
progress = true;
}
});
if (!progress) break;
}
perProjectResults.forEach((referencedSymbols, project) => {
if (updatedProjects.has(project)) return;
for (const referencedSymbol of referencedSymbols) {
for (const ref of referencedSymbol.references) {
ref.isDefinition = false;
}
}
});
}
// We need to de-duplicate and aggregate the results by choosing an authoritative version
// of each definition and merging references from all the projects where they appear.
const results: ReferencedSymbol[] = [];
const seenRefs = createDocumentSpanSet(useCaseSensitiveFileNames); // It doesn't make sense to have a reference in two definition lists, so we de-dup globally
// TODO: We might end up with a more logical allocation of refs to defs if we pre-sorted the defs by descending ref-count.
// Otherwise, it just ends up attached to the first corresponding def we happen to process. The others may or may not be
// dropped later when we check for defs with ref-count 0.
perProjectResults.forEach((projectResults, project) => {
for (const referencedSymbol of projectResults) {
const mappedDefinitionFile = getMappedLocationForProject(documentSpanLocation(referencedSymbol.definition), project);
const definition: ReferencedSymbolDefinitionInfo = mappedDefinitionFile === undefined ?
referencedSymbol.definition :
{
...referencedSymbol.definition,
textSpan: createTextSpan(mappedDefinitionFile.pos, referencedSymbol.definition.textSpan.length), // Why would the length be the same in the original?
fileName: mappedDefinitionFile.fileName,
contextSpan: getMappedContextSpanForProject(referencedSymbol.definition, project),
};
let symbolToAddTo = find(results, o => documentSpansEqual(o.definition, definition, useCaseSensitiveFileNames));
if (!symbolToAddTo) {
symbolToAddTo = { definition, references: [] };
results.push(symbolToAddTo);
}
for (const ref of referencedSymbol.references) {
if (!seenRefs.has(ref) && !getMappedLocationForProject(documentSpanLocation(ref), project)) {
seenRefs.add(ref);
symbolToAddTo.references.push(ref);
}
}
}
});
return results.filter(o => o.references.length !== 0);
}
interface ProjectAndLocation {
readonly project: Project;
readonly location: DocumentPosition;
}
function forEachProjectInProjects(projects: Projects, path: string | undefined, cb: (project: Project, path: string | undefined) => void): void {
for (const project of isArray(projects) ? projects : projects.projects) {
cb(project, path);
}
if (!isArray(projects) && projects.symLinkedProjects) {
projects.symLinkedProjects.forEach((symlinkedProjects, symlinkedPath) => {
for (const project of symlinkedProjects) {
cb(project, symlinkedPath);
}
});
}
}
/**
* @param projects Projects initially known to contain {@link initialLocation}
* @param defaultProject The default project containing {@link initialLocation}
* @param initialLocation Where the search operation was triggered
* @param getResultsForPosition This is where you plug in `findReferences`, `renameLocation`, etc
* @param forPositionInResult Given an item returned by {@link getResultsForPosition} enumerate the positions referred to by that result
* @returns In the common case where there's only one project, returns an array of results from {@link getResultsForPosition}.
* If multiple projects were searched - even if they didn't return results - the result will be a map from project to per-project results.
*/
function getPerProjectReferences<TResult>(
projects: Projects,
defaultProject: Project,
initialLocation: DocumentPosition,
defaultDefinition: DocumentPosition | undefined,
mapDefinitionInProject: (
definition: DocumentPosition,
project: Project,
getGeneratedDefinition: () => DocumentPosition | undefined,
getSourceDefinition: () => DocumentPosition | undefined,
) => DocumentPosition | undefined,
getResultsForPosition: (project: Project, location: DocumentPosition) => readonly TResult[] | undefined,
forPositionInResult?: (result: TResult, cb: (location: DocumentPosition) => void) => void,
): readonly TResult[] | Map<Project, readonly TResult[]> {
// If `getResultsForPosition` returns results for a project, they go in here
const resultsMap = new Map<Project, readonly TResult[]>();
const queue = createQueue<ProjectAndLocation>();
// In order to get accurate isDefinition values for `defaultProject`,
// we need to ensure that it is searched from `initialLocation`.
// The easiest way to do this is to search it first.
queue.enqueue({ project: defaultProject, location: initialLocation });
// This will queue `defaultProject` a second time, but it will be dropped
// as a dup when it is dequeued.
forEachProjectInProjects(projects, initialLocation.fileName, (project, path) => {
const location = { fileName: path!, pos: initialLocation.pos };
queue.enqueue({ project, location });
});
const projectService = defaultProject.projectService;
const cancellationToken = defaultProject.getCancellationToken();
// Don't call these unless !!defaultDefinition
const getGeneratedDefinition = memoize(() =>
defaultProject.isSourceOfProjectReferenceRedirect(defaultDefinition!.fileName) ?
defaultDefinition :
defaultProject.getLanguageService().getSourceMapper().tryGetGeneratedPosition(defaultDefinition!)
);
const getSourceDefinition = memoize(() =>
defaultProject.isSourceOfProjectReferenceRedirect(defaultDefinition!.fileName) ?
defaultDefinition :
defaultProject.getLanguageService().getSourceMapper().tryGetSourcePosition(defaultDefinition!)
);
// The keys of resultsMap allow us to check which projects have already been searched, but we also
// maintain a set of strings because that's what `loadAncestorProjectTree` wants.
const searchedProjectKeys = new Set<string>();
onCancellation:
while (!queue.isEmpty()) {
while (!queue.isEmpty()) {
if (cancellationToken.isCancellationRequested()) break onCancellation;
const { project, location } = queue.dequeue();
if (resultsMap.has(project)) continue;
if (isLocationProjectReferenceRedirect(project, location)) continue;
// The project could be dirty and could no longer contain the location's file after it's updated,
// so we need to update the project and check if it still contains the file.
updateProjectIfDirty(project);
if (!project.containsFile(toNormalizedPath(location.fileName))) {
continue;
}
const projectResults = searchPosition(project, location);
resultsMap.set(project, projectResults ?? emptyArray);
searchedProjectKeys.add(getProjectKey(project));
}
// At this point, we know about all projects passed in as arguments and any projects in which
// `getResultsForPosition` has returned results. We expand that set to include any projects
// downstream from any of these and then queue new initial-position searches for any new project
// containing `initialLocation`.
if (defaultDefinition) {
// This seems to mean "load all projects downstream from any member of `seenProjects`".
projectService.loadAncestorProjectTree(searchedProjectKeys);
projectService.forEachEnabledProject(project => {
if (cancellationToken.isCancellationRequested()) return; // There's no mechanism for skipping the remaining projects
if (resultsMap.has(project)) return; // Can loop forever without this (enqueue here, dequeue above, repeat)
const location = mapDefinitionInProject(defaultDefinition, project, getGeneratedDefinition, getSourceDefinition);
if (location) {
queue.enqueue({ project, location });
}
});
}
}
// In the common case where there's only one project, return a simpler result to make
// it easier for the caller to skip post-processing.
if (resultsMap.size === 1) {
return firstIterator(resultsMap.values());
}
return resultsMap;
function searchPosition(project: Project, location: DocumentPosition): readonly TResult[] | undefined {
const projectResults = getResultsForPosition(project, location);
if (!projectResults || !forPositionInResult) return projectResults;
for (const result of projectResults) {
forPositionInResult(result, position => {
// This may trigger a search for a tsconfig, but there are several layers of caching that make it inexpensive
const originalLocation = projectService.getOriginalLocationEnsuringConfiguredProject(project, position);
if (!originalLocation) return;
const originalScriptInfo = projectService.getScriptInfo(originalLocation.fileName)!;
for (const project of originalScriptInfo.containingProjects) {
if (!project.isOrphan() && !resultsMap.has(project)) { // Optimization: don't enqueue if will be discarded
queue.enqueue({ project, location: originalLocation });
}
}
const symlinkedProjectsMap = projectService.getSymlinkedProjects(originalScriptInfo);
if (symlinkedProjectsMap) {
symlinkedProjectsMap.forEach((symlinkedProjects, symlinkedPath) => {
for (const symlinkedProject of symlinkedProjects) {
if (!symlinkedProject.isOrphan() && !resultsMap.has(symlinkedProject)) { // Optimization: don't enqueue if will be discarded
queue.enqueue({ project: symlinkedProject, location: { fileName: symlinkedPath as string, pos: originalLocation.pos } });
}
}
});
}
});
}
return projectResults;
}
}
function mapDefinitionInProjectIfFileInProject(
definition: DocumentPosition,
project: Project,
) {
// If the definition is actually from the project, definition is correct as is
if (
project.containsFile(toNormalizedPath(definition.fileName)) &&
!isLocationProjectReferenceRedirect(project, definition)
) {
return definition;
}
}
function mapDefinitionInProject(
definition: DocumentPosition,
project: Project,
getGeneratedDefinition: () => DocumentPosition | undefined,
getSourceDefinition: () => DocumentPosition | undefined,
): DocumentPosition | undefined {
// If the definition is actually from the project, definition is correct as is
const result = mapDefinitionInProjectIfFileInProject(definition, project);
if (result) return result;
const generatedDefinition = getGeneratedDefinition();
if (generatedDefinition && project.containsFile(toNormalizedPath(generatedDefinition.fileName))) return generatedDefinition;
const sourceDefinition = getSourceDefinition();
return sourceDefinition && project.containsFile(toNormalizedPath(sourceDefinition.fileName)) ? sourceDefinition : undefined;
}
function isLocationProjectReferenceRedirect(project: Project, location: Pick<DocumentPosition, "fileName"> | undefined) {
if (!location) return false;
const program = project.getLanguageService().getProgram();
if (!program) return false;
const sourceFile = program.getSourceFile(location.fileName);
// It is possible that location is attached to project but
// the program actually includes its redirect instead.
// This happens when rootFile in project is one of the file from referenced project
// Thus root is attached but program doesnt have the actual .ts file but .d.ts
// If this is not the file we were actually looking, return rest of the toDo
return !!sourceFile &&
sourceFile.resolvedPath !== sourceFile.path &&
sourceFile.resolvedPath !== project.toPath(location.fileName);
}
function getProjectKey(project: Project) {
return isConfiguredProject(project) ? project.canonicalConfigFilePath : project.getProjectName();
}
function documentSpanLocation({ fileName, textSpan }: DocumentSpan): DocumentPosition {
return { fileName, pos: textSpan.start };
}
function getMappedLocationForProject(location: DocumentPosition, project: Project): DocumentPosition | undefined {
return getMappedLocation(location, project.getSourceMapper(), p => project.projectService.fileExists(p as NormalizedPath));
}
function getMappedDocumentSpanForProject(documentSpan: DocumentSpan, project: Project): DocumentSpan | undefined {
return getMappedDocumentSpan(documentSpan, project.getSourceMapper(), p => project.projectService.fileExists(p as NormalizedPath));
}
function getMappedContextSpanForProject(documentSpan: DocumentSpan, project: Project): TextSpan | undefined {
return getMappedContextSpan(documentSpan, project.getSourceMapper(), p => project.projectService.fileExists(p as NormalizedPath));
}
const invalidPartialSemanticModeCommands: readonly protocol.CommandTypes[] = [
protocol.CommandTypes.OpenExternalProject,
protocol.CommandTypes.OpenExternalProjects,
protocol.CommandTypes.CloseExternalProject,
protocol.CommandTypes.SynchronizeProjectList,
protocol.CommandTypes.EmitOutput,
protocol.CommandTypes.CompileOnSaveAffectedFileList,
protocol.CommandTypes.CompileOnSaveEmitFile,
protocol.CommandTypes.CompilerOptionsDiagnosticsFull,
protocol.CommandTypes.EncodedSemanticClassificationsFull,
protocol.CommandTypes.SemanticDiagnosticsSync,
protocol.CommandTypes.SuggestionDiagnosticsSync,
protocol.CommandTypes.GeterrForProject,
protocol.CommandTypes.Reload,
protocol.CommandTypes.ReloadProjects,
protocol.CommandTypes.GetCodeFixes,
protocol.CommandTypes.GetCodeFixesFull,
protocol.CommandTypes.GetCombinedCodeFix,
protocol.CommandTypes.GetCombinedCodeFixFull,
protocol.CommandTypes.ApplyCodeActionCommand,
protocol.CommandTypes.GetSupportedCodeFixes,
protocol.CommandTypes.GetApplicableRefactors,
protocol.CommandTypes.GetMoveToRefactoringFileSuggestions,
protocol.CommandTypes.GetEditsForRefactor,
protocol.CommandTypes.GetEditsForRefactorFull,
protocol.CommandTypes.OrganizeImports,
protocol.CommandTypes.OrganizeImportsFull,
protocol.CommandTypes.GetEditsForFileRename,
protocol.CommandTypes.GetEditsForFileRenameFull,
protocol.CommandTypes.PrepareCallHierarchy,
protocol.CommandTypes.ProvideCallHierarchyIncomingCalls,
protocol.CommandTypes.ProvideCallHierarchyOutgoingCalls,
protocol.CommandTypes.GetPasteEdits,
protocol.CommandTypes.CopilotRelated,
];
const invalidSyntacticModeCommands: readonly protocol.CommandTypes[] = [
...invalidPartialSemanticModeCommands,
protocol.CommandTypes.Definition,
protocol.CommandTypes.DefinitionFull,
protocol.CommandTypes.DefinitionAndBoundSpan,
protocol.CommandTypes.DefinitionAndBoundSpanFull,
protocol.CommandTypes.TypeDefinition,
protocol.CommandTypes.Implementation,
protocol.CommandTypes.ImplementationFull,
protocol.CommandTypes.References,
protocol.CommandTypes.ReferencesFull,
protocol.CommandTypes.Rename,
protocol.CommandTypes.RenameLocationsFull,
protocol.CommandTypes.RenameInfoFull,
protocol.CommandTypes.Quickinfo,
protocol.CommandTypes.QuickinfoFull,
protocol.CommandTypes.CompletionInfo,
protocol.CommandTypes.Completions,
protocol.CommandTypes.CompletionsFull,
protocol.CommandTypes.CompletionDetails,
protocol.CommandTypes.CompletionDetailsFull,
protocol.CommandTypes.SignatureHelp,
protocol.CommandTypes.SignatureHelpFull,
protocol.CommandTypes.Navto,
protocol.CommandTypes.NavtoFull,
protocol.CommandTypes.DocumentHighlights,
protocol.CommandTypes.DocumentHighlightsFull,
protocol.CommandTypes.PreparePasteEdits,
];
export interface SessionOptions {
host: ServerHost;
cancellationToken: ServerCancellationToken;
useSingleInferredProject: boolean;
useInferredProjectPerProjectRoot: boolean;
typingsInstaller?: ITypingsInstaller;
byteLength: (buf: string, encoding?: BufferEncoding) => number;
hrtime: (start?: [number, number]) => [number, number];
logger: Logger;
/**
* If falsy, all events are suppressed.
*/
canUseEvents: boolean;
canUseWatchEvents?: boolean;
eventHandler?: ProjectServiceEventHandler;
/** Has no effect if eventHandler is also specified. */
suppressDiagnosticEvents?: boolean;
serverMode?: LanguageServiceMode;
throttleWaitMilliseconds?: number;
noGetErrOnBackgroundUpdate?: boolean;
globalPlugins?: readonly string[];
pluginProbeLocations?: readonly string[];
allowLocalPluginLoads?: boolean;
typesMapLocation?: string;
/** @internal */ incrementalVerifier?: (service: ProjectService) => void;
}