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Copy pathsession.ts
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4013 lines (3623 loc) · 194 KB
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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,
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,
convertFormatOptions,
convertScriptKindName,
convertUserPreferences,
CreateDirectoryWatcherEvent,
CreateFileWatcherEvent,
EmitResult,
emptyArray,
Errors,
GcTimer,
indent,
isConfigFile,
isConfiguredProject,
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 = (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>(
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,
/*isForRename*/ true,
(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);
// 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,
/*isForRename*/ false,
(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,
isForRename: boolean,
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();
const defaultDefinition = getDefinitionLocation(defaultProject, initialLocation, isForRename);
// 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) return undefined;
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 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
if (
project.containsFile(toNormalizedPath(definition.fileName)) &&
!isLocationProjectReferenceRedirect(project, definition)
) {
return definition;
}
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: DocumentPosition | 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,
];
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,
];
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;
}
export class Session<TMessage = string> implements EventSender {
private readonly gcTimer: GcTimer;
protected projectService: ProjectService;
private changeSeq = 0;
private performanceData: PerformanceData | undefined;
private currentRequestId!: number;
private errorCheck: MultistepOperation;
protected host: ServerHost;
private readonly cancellationToken: ServerCancellationToken;
protected readonly typingsInstaller: ITypingsInstaller;
protected byteLength: (buf: string, encoding?: BufferEncoding) => number;
private hrtime: (start?: [number, number]) => [number, number];
protected logger: Logger;
protected canUseEvents: boolean;