TypeScript/src/server/session.ts at master · java08800/TypeScript · GitHub

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namespace ts.server {

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 {

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 ((project.projectKind === ProjectKind.Inferred || project.projectKind === ProjectKind.External) &&

project.isJsOnlyProject()) {

const scriptInfo = project.getScriptInfoForNormalizedPath(file);

return scriptInfo && !scriptInfo.isJavaScript();

}

return false;

}

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,

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 };

}

function formatConfigFileDiag(diag: Diagnostic, includeFileName: true): protocol.DiagnosticWithFileName;

function formatConfigFileDiag(diag: Diagnostic, includeFileName: false): protocol.Diagnostic;

function formatConfigFileDiag(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,

source,

relatedInformation: map(diag.relatedInformation, formatRelatedInformation),

};

return includeFileName

? { ...common, fileName: diag.file && diag.file.fileName }

: common;

}

export interface PendingErrorCheck {

fileName: NormalizedPath;

project: Project;

}

function allEditsBeforePos(edits: ReadonlyArray<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.

export type CommandNames = protocol.CommandTypes;

export const CommandNames = (<any>protocol).CommandTypes; // tslint:disable-line variable-name

export function formatMessage<T extends protocol.Message>(msg: T, logger: Logger, byteLength: (s: string, encoding: string) => number, newLine: string): string {

const verboseLogging = logger.hasLevel(LogLevel.verbose);

const json = JSON.stringify(msg);

if (verboseLogging) {

logger.info(`${msg.type}:${indent(json)}`);

}

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(action: () => void): void;

delay(ms: number, action: () => void): void;

}

/**

* External capabilities used by multistep operation

interface MultistepOperationHost {

getCurrentRequestId(): number;

sendRequestCompletedEvent(requestId: number): void;

getServerHost(): ServerHost;

isCancellationRequested(): boolean;

executeWithRequestId(requestId: number, action: () => void): 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 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.requestId = undefined;

}

this.setTimerHandle(undefined);

this.setImmediateId(undefined);

}

public immediate(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));

}));

}

public delay(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));

}, ms));

}

private executeAction(action: (next: NextStep) => void) {

let stop = false;

try {

if (this.operationHost.isCancellationRequested()) {

stop = true;

}

else {

action(this);

}

catch (e) {

stop = true;

// ignore cancellation request

if (!(e instanceof OperationCanceledException)) {

this.operationHost.logError(e, `delayed processing of request ${this.requestId}`);

}

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 = ReadonlyArray<Project> | {

readonly projects: ReadonlyArray<Project>;

readonly symLinkedProjects: MultiMap<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) => ReadonlyArray<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 as Path);

outputs.push(...flatMap(projects, project => action(project, value)));

});

}

return deduplicate(outputs, equateValues);

}

function combineProjectOutputFromEveryProject<T>(projectService: ProjectService, action: (project: Project) => ReadonlyArray<T>, areEqual: (a: T, b: T) => boolean) {

const outputs: T[] = [];

projectService.forEachEnabledProject(project => {

const theseOutputs = action(project);

outputs.push(...theseOutputs.filter(output => !outputs.some(o => areEqual(o, output))));

});

return outputs;

}

function combineProjectOutputWhileOpeningReferencedProjects<T>(

projects: Projects,

defaultProject: Project,

action: (project: Project) => ReadonlyArray<T>,

getLocation: (t: T) => DocumentPosition,

resultsEqual: (a: T, b: T) => boolean,

): T[] {

const outputs: T[] = [];

combineProjectOutputWorker<undefined>(

projects,

defaultProject,

/*initialLocation*/ undefined,

({ project }, tryAddToTodo) => {

for (const output of action(project)) {

if (!contains(outputs, output, resultsEqual) && !tryAddToTodo(project, getLocation(output))) {

outputs.push(output);

}

/*getDefinition*/ undefined);

return outputs;

}

function combineProjectOutputForRenameLocations(

projects: Projects,

defaultProject: Project,

initialLocation: DocumentPosition,

findInStrings: boolean,

findInComments: boolean,

hostPreferences: UserPreferences

): ReadonlyArray<RenameLocation> {

const outputs: RenameLocation[] = [];

combineProjectOutputWorker<DocumentPosition>(

projects,

defaultProject,

initialLocation,

({ project, location }, tryAddToTodo) => {

for (const output of project.getLanguageService().findRenameLocations(location.fileName, location.pos, findInStrings, findInComments, hostPreferences.providePrefixAndSuffixTextForRename) || emptyArray) {

if (!contains(outputs, output, documentSpansEqual) && !tryAddToTodo(project, documentSpanLocation(output))) {

outputs.push(output);

}

() => getDefinitionLocation(defaultProject, initialLocation)

);

return outputs;

}

function getDefinitionLocation(defaultProject: Project, initialLocation: DocumentPosition): DocumentPosition | undefined {

const infos = defaultProject.getLanguageService().getDefinitionAtPosition(initialLocation.fileName, initialLocation.pos);

const info = infos && firstOrUndefined(infos);

return info && { fileName: info.fileName, pos: info.textSpan.start };

}

function combineProjectOutputForReferences(

projects: Projects,

defaultProject: Project,

initialLocation: DocumentPosition

): ReadonlyArray<ReferencedSymbol> {

const outputs: ReferencedSymbol[] = [];

combineProjectOutputWorker<DocumentPosition>(

projects,

defaultProject,

initialLocation,

({ project, location }, getMappedLocation) => {

for (const outputReferencedSymbol of project.getLanguageService().findReferences(location.fileName, location.pos) || emptyArray) {

const mappedDefinitionFile = getMappedLocation(project, documentSpanLocation(outputReferencedSymbol.definition));

const definition: ReferencedSymbolDefinitionInfo = mappedDefinitionFile === undefined ? outputReferencedSymbol.definition : {

...outputReferencedSymbol.definition,

textSpan: createTextSpan(mappedDefinitionFile.pos, outputReferencedSymbol.definition.textSpan.length),

fileName: mappedDefinitionFile.fileName,

};

let symbolToAddTo = find(outputs, o => documentSpansEqual(o.definition, definition));

if (!symbolToAddTo) {

symbolToAddTo = { definition, references: [] };

outputs.push(symbolToAddTo);

}

for (const ref of outputReferencedSymbol.references) {

// If it's in a mapped file, that is added to the todo list by `getMappedLocation`.

if (!contains(symbolToAddTo.references, ref, documentSpansEqual) && !getMappedLocation(project, documentSpanLocation(ref))) {

symbolToAddTo.references.push(ref);

}

() => getDefinitionLocation(defaultProject, initialLocation)

);

return outputs.filter(o => o.references.length !== 0);

}

interface ProjectAndLocation<TLocation extends DocumentPosition | undefined> {

readonly project: Project;

readonly location: TLocation;

}

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);

}

});

}

type CombineProjectOutputCallback<TLocation extends DocumentPosition | undefined> = (

where: ProjectAndLocation<TLocation>,

getMappedLocation: (project: Project, location: DocumentPosition) => DocumentPosition | undefined,

) => void;

function combineProjectOutputWorker<TLocation extends DocumentPosition | undefined>(

projects: Projects,

defaultProject: Project,

initialLocation: TLocation,

cb: CombineProjectOutputCallback<TLocation>,

getDefinition: (() => DocumentPosition | undefined) | undefined,

): void {

const projectService = defaultProject.projectService;

let toDo: ProjectAndLocation<TLocation>[] | undefined;

const seenProjects = createMap<true>();

forEachProjectInProjects(projects, initialLocation && initialLocation.fileName, (project, path) => {

// TLocation shoud be either `DocumentPosition` or `undefined`. Since `initialLocation` is `TLocation` this cast should be valid.

const location = (initialLocation ? { fileName: path, pos: initialLocation.pos } : undefined) as TLocation;

toDo = callbackProjectAndLocation({ project, location }, projectService, toDo, seenProjects, cb);

});

// After initial references are collected, go over every other project and see if it has a reference for the symbol definition.

if (getDefinition) {

const memGetDefinition = memoize(getDefinition);

projectService.forEachEnabledProject(project => {

if (!addToSeen(seenProjects, project.projectName)) return;

const definition = getDefinitionInProject(memGetDefinition(), defaultProject, project);

if (definition) {

toDo = callbackProjectAndLocation<TLocation>({ project, location: definition as TLocation }, projectService, toDo, seenProjects, cb);

}

});

}

while (toDo && toDo.length) {

toDo = callbackProjectAndLocation(Debug.assertDefined(toDo.pop()), projectService, toDo, seenProjects, cb);

}

function getDefinitionInProject(definition: DocumentPosition | undefined, definingProject: Project, project: Project): DocumentPosition | undefined {

if (!definition || project.containsFile(toNormalizedPath(definition.fileName))) return definition;

const mappedDefinition = definingProject.getLanguageService().getSourceMapper().tryGetGeneratedPosition(definition);

return mappedDefinition && project.containsFile(toNormalizedPath(mappedDefinition.fileName)) ? mappedDefinition : undefined;

}

function callbackProjectAndLocation<TLocation extends DocumentPosition | undefined>(

projectAndLocation: ProjectAndLocation<TLocation>,

projectService: ProjectService,

toDo: ProjectAndLocation<TLocation>[] | undefined,

seenProjects: Map<true>,

cb: CombineProjectOutputCallback<TLocation>,

): ProjectAndLocation<TLocation>[] | undefined {

if (projectAndLocation.project.getCancellationToken().isCancellationRequested()) return undefined; // Skip rest of toDo if cancelled

cb(projectAndLocation, (project, location) => {

seenProjects.set(projectAndLocation.project.projectName, true);

const originalLocation = projectService.getOriginalLocationEnsuringConfiguredProject(project, location);

if (!originalLocation) return undefined;

const originalScriptInfo = projectService.getScriptInfo(originalLocation.fileName)!;

toDo = toDo || [];

for (const project of originalScriptInfo.containingProjects) {

addToTodo({ project, location: originalLocation as TLocation }, toDo, seenProjects);

}

const symlinkedProjectsMap = projectService.getSymlinkedProjects(originalScriptInfo);

if (symlinkedProjectsMap) {

symlinkedProjectsMap.forEach((symlinkedProjects) => {

for (const symlinkedProject of symlinkedProjects) addToTodo({ project: symlinkedProject, location: originalLocation as TLocation }, toDo!, seenProjects);

});

}

return originalLocation;

});

return toDo;

}

function addToTodo<TLocation extends DocumentPosition | undefined>(projectAndLocation: ProjectAndLocation<TLocation>, toDo: Push<ProjectAndLocation<TLocation>>, seenProjects: Map<true>): void {

if (addToSeen(seenProjects, projectAndLocation.project.projectName)) toDo.push(projectAndLocation);

}

function documentSpanLocation({ fileName, textSpan }: DocumentSpan): DocumentPosition {

return { fileName, pos: textSpan.start };

}

function getMappedLocation(location: DocumentPosition, projectService: ProjectService, project: Project): DocumentPosition | undefined {

const mapsTo = project.getSourceMapper().tryGetSourcePosition(location);

return mapsTo && projectService.fileExists(toNormalizedPath(mapsTo.fileName)) ? mapsTo : undefined;

}

export interface SessionOptions {

host: ServerHost;

cancellationToken: ServerCancellationToken;

useSingleInferredProject: boolean;

useInferredProjectPerProjectRoot: boolean;

typingsInstaller: ITypingsInstaller;

byteLength: (buf: string, encoding?: string) => number;

hrtime: (start?: number[]) => number[];

logger: Logger;

/**

* If falsy, all events are suppressed.

canUseEvents: boolean;

eventHandler?: ProjectServiceEventHandler;

/** Has no effect if eventHandler is also specified. */

suppressDiagnosticEvents?: boolean;

syntaxOnly?: boolean;

throttleWaitMilliseconds?: number;

noGetErrOnBackgroundUpdate?: boolean;

globalPlugins?: ReadonlyArray<string>;

pluginProbeLocations?: ReadonlyArray<string>;

allowLocalPluginLoads?: boolean;

typesMapLocation?: string;

}

export class Session implements EventSender {

private readonly gcTimer: GcTimer;

protected projectService: ProjectService;

private changeSeq = 0;

private currentRequestId!: number;

private errorCheck: MultistepOperation;

protected host: ServerHost;

private readonly cancellationToken: ServerCancellationToken;

protected readonly typingsInstaller: ITypingsInstaller;

protected byteLength: (buf: string, encoding?: string) => number;

private hrtime: (start?: number[]) => number[];

protected logger: Logger;

protected canUseEvents: boolean;

private suppressDiagnosticEvents?: boolean;

private eventHandler: ProjectServiceEventHandler | undefined;

private readonly noGetErrOnBackgroundUpdate?: boolean;

constructor(opts: SessionOptions) {

this.host = opts.host;

this.cancellationToken = opts.cancellationToken;

this.typingsInstaller = opts.typingsInstaller;

this.byteLength = opts.byteLength;

this.hrtime = opts.hrtime;

this.logger = opts.logger;

this.canUseEvents = opts.canUseEvents;

this.suppressDiagnosticEvents = opts.suppressDiagnosticEvents;

this.noGetErrOnBackgroundUpdate = opts.noGetErrOnBackgroundUpdate;

const { throttleWaitMilliseconds } = opts;

this.eventHandler = this.canUseEvents

? opts.eventHandler || (event => this.defaultEventHandler(event))

: undefined;

const multistepOperationHost: MultistepOperationHost = {

executeWithRequestId: (requestId, action) => this.executeWithRequestId(requestId, action),

getCurrentRequestId: () => this.currentRequestId,

getServerHost: () => this.host,

logError: (err, cmd) => this.logError(err, cmd),

sendRequestCompletedEvent: requestId => this.sendRequestCompletedEvent(requestId),

isCancellationRequested: () => this.cancellationToken.isCancellationRequested()

};

this.errorCheck = new MultistepOperation(multistepOperationHost);

const settings: ProjectServiceOptions = {

host: this.host,

logger: this.logger,

cancellationToken: this.cancellationToken,

useSingleInferredProject: opts.useSingleInferredProject,

useInferredProjectPerProjectRoot: opts.useInferredProjectPerProjectRoot,

typingsInstaller: this.typingsInstaller,

throttleWaitMilliseconds,

eventHandler: this.eventHandler,

suppressDiagnosticEvents: this.suppressDiagnosticEvents,

globalPlugins: opts.globalPlugins,

pluginProbeLocations: opts.pluginProbeLocations,

allowLocalPluginLoads: opts.allowLocalPluginLoads,

typesMapLocation: opts.typesMapLocation,

syntaxOnly: opts.syntaxOnly,

};

this.projectService = new ProjectService(settings);

this.gcTimer = new GcTimer(this.host, /*delay*/ 7000, this.logger);

}

private sendRequestCompletedEvent(requestId: number): void {

this.event<protocol.RequestCompletedEventBody>({ request_seq: requestId }, "requestCompleted");

}

private defaultEventHandler(event: ProjectServiceEvent) {

switch (event.eventName) {

case ProjectsUpdatedInBackgroundEvent:

const { openFiles } = event.data;

this.projectsUpdatedInBackgroundEvent(openFiles);

break;

case ProjectLoadingStartEvent:

const { project, reason } = event.data;

this.event<protocol.ProjectLoadingStartEventBody>(

{ projectName: project.getProjectName(), reason },

ProjectLoadingStartEvent);

break;

case ProjectLoadingFinishEvent:

const { project: finishProject } = event.data;

this.event<protocol.ProjectLoadingFinishEventBody>({ projectName: finishProject.getProjectName() }, ProjectLoadingFinishEvent);

break;

case LargeFileReferencedEvent:

const { file, fileSize, maxFileSize } = event.data;

this.event<protocol.LargeFileReferencedEventBody>({ file, fileSize, maxFileSize }, LargeFileReferencedEvent);

break;

case ConfigFileDiagEvent:

const { triggerFile, configFileName: configFile, diagnostics } = event.data;

const bakedDiags = map(diagnostics, diagnostic => formatConfigFileDiag(diagnostic, /*includeFileName*/ true));

this.event<protocol.ConfigFileDiagnosticEventBody>({

triggerFile,

configFile,

diagnostics: bakedDiags

}, ConfigFileDiagEvent);

break;

case ProjectLanguageServiceStateEvent: {

const eventName: protocol.ProjectLanguageServiceStateEventName = ProjectLanguageServiceStateEvent;

this.event<protocol.ProjectLanguageServiceStateEventBody>({

projectName: event.data.project.getProjectName(),

languageServiceEnabled: event.data.languageServiceEnabled

}, eventName);

break;

}

case ProjectInfoTelemetryEvent: {

const eventName: protocol.TelemetryEventName = "telemetry";

this.event<protocol.TelemetryEventBody>({

telemetryEventName: event.eventName,

payload: event.data,

}, eventName);

break;

}

private projectsUpdatedInBackgroundEvent(openFiles: string[]): void {

this.projectService.logger.info(`got projects updated in background, updating diagnostics for ${openFiles}`);

if (openFiles.length) {

if (!this.suppressDiagnosticEvents && !this.noGetErrOnBackgroundUpdate) {

const checkList = this.createCheckList(openFiles);

// For now only queue error checking for open files. We can change this to include non open files as well

this.errorCheck.startNew(next => this.updateErrorCheck(next, checkList, 100, /*requireOpen*/ true));

}

// Send project changed event

this.event<protocol.ProjectsUpdatedInBackgroundEventBody>({

openFiles

}, ProjectsUpdatedInBackgroundEvent);

}

public logError(err: Error, cmd: string): void {

this.logErrorWorker(err, cmd);

}

private logErrorWorker(err: Error, cmd: string, fileRequest?: protocol.FileRequestArgs): void {

let msg = "Exception on executing command " + cmd;

if (err.message) {

msg += ":\n" + indent(err.message);

if ((<StackTraceError>err).stack) {

msg += "\n" + indent((<StackTraceError>err).stack!);

}

if (this.logger.hasLevel(LogLevel.verbose)) {

if (fileRequest) {

try {

const { file, project } = this.getFileAndProject(fileRequest);

const scriptInfo = project.getScriptInfoForNormalizedPath(file);

if (scriptInfo) {

const text = getSnapshotText(scriptInfo.getSnapshot());

msg += `\n\nFile text of ${fileRequest.file}:${indent(text)}\n`;

}

catch { } // tslint:disable-line no-empty

}

if (err.message && err.message.indexOf(`Could not find sourceFile:`) !== -1) {

msg += `\n\nProjects::\n`;

let counter = 0;

const addProjectInfo = (project: Project) => {

msg += `\nProject '${project.projectName}' (${ProjectKind[project.projectKind]}) ${counter}\n`;

msg += project.filesToString(/*writeProjectFileNames*/ true);

msg += "\n-----------------------------------------------\n";

counter++;

};

this.projectService.externalProjects.forEach(addProjectInfo);

this.projectService.configuredProjects.forEach(addProjectInfo);

this.projectService.inferredProjects.forEach(addProjectInfo);

}

this.logger.msg(msg, Msg.Err);

}

public send(msg: protocol.Message) {

if (msg.type === "event" && !this.canUseEvents) {

if (this.logger.hasLevel(LogLevel.verbose)) {

this.logger.info(`Session does not support events: ignored event: ${JSON.stringify(msg)}`);

}

return;

}

this.host.write(formatMessage(msg, this.logger, this.byteLength, this.host.newLine));

}

public event<T extends object>(body: T, eventName: string): void {

this.send(toEvent(eventName, body));

}

// For backwards-compatibility only.

/** @deprecated */

public output(info: any, cmdName: string, reqSeq?: number, errorMsg?: string): void {

this.doOutput(info, cmdName, reqSeq!, /*success*/ !errorMsg, errorMsg); // TODO: GH#18217

}

private doOutput(info: {} | undefined, cmdName: string, reqSeq: number, success: boolean, message?: string): void {

const res: protocol.Response = {

seq: 0,

type: "response",

command: cmdName,

request_seq: reqSeq,

success,

};

if (success) {

let metadata: unknown;

if (isArray(info)) {

res.body = info;

metadata = (info as WithMetadata<ReadonlyArray<any>>).metadata;

delete (info as WithMetadata<ReadonlyArray<any>>).metadata;

}

else if (typeof info === "object") {

if ((info as WithMetadata<{}>).metadata) {

const { metadata: infoMetadata, ...body } = (info as WithMetadata<{}>);

res.body = body;

metadata = infoMetadata;

}

else {

res.body = info;

}

else {

res.body = info;

}

if (metadata) res.metadata = metadata;

}

else {

Debug.assert(info === undefined);

}

if (message) {

res.message = message;

}

this.send(res);

}

private semanticCheck(file: NormalizedPath, project: Project) {

const diags = isDeclarationFileInJSOnlyNonConfiguredProject(project, file)

? emptyArray

: project.getLanguageService().getSemanticDiagnostics(file);

this.sendDiagnosticsEvent(file, project, diags, "semanticDiag");

}

private syntacticCheck(file: NormalizedPath, project: Project) {

this.sendDiagnosticsEvent(file, project, project.getLanguageService().getSyntacticDiagnostics(file), "syntaxDiag");

}

private suggestionCheck(file: NormalizedPath, project: Project) {

this.sendDiagnosticsEvent(file, project, project.getLanguageService().getSuggestionDiagnostics(file), "suggestionDiag");

}

private sendDiagnosticsEvent(file: NormalizedPath, project: Project, diagnostics: ReadonlyArray<Diagnostic>, kind: protocol.DiagnosticEventKind): void {

try {

this.event<protocol.DiagnosticEventBody>({ file, diagnostics: diagnostics.map(diag => formatDiag(file, project, diag)) }, kind);

}

catch (err) {

this.logError(err, kind);

}

/** It is the caller's responsibility to verify that `!this.suppressDiagnosticEvents`. */

private updateErrorCheck(next: NextStep, checkList: PendingErrorCheck[], ms: number, requireOpen = true) {

Debug.assert(!this.suppressDiagnosticEvents); // Caller's responsibility

const seq = this.changeSeq;

const followMs = Math.min(ms, 200);

let index = 0;

const checkOne = () => {

if (this.changeSeq !== seq) {

return;

}

const { fileName, project } = checkList[index];

index++;

// Ensure the project is upto date before checking if this file is present in the project

updateProjectIfDirty(project);

if (!project.containsFile(fileName, requireOpen)) {

return;

}

this.syntacticCheck(fileName, project);

if (this.changeSeq !== seq) {

return;

}

next.immediate(() => {

this.semanticCheck(fileName, project);

if (this.changeSeq !== seq) {

return;

}

const goNext = () => {

if (checkList.length > index) {

next.delay(followMs, checkOne);

}

};

if (this.getPreferences(fileName).disableSuggestions) {

goNext();

}

else {

next.immediate(() => {

this.suggestionCheck(fileName, project);

goNext();

});

}

});

};

if (checkList.length > index && this.changeSeq === seq) {

next.delay(ms, checkOne);

}

private cleanProjects(caption: string, projects: Project[]) {

if (!projects) {

return;

}

this.logger.info(`cleaning ${caption}`);

for (const p of projects) {

p.getLanguageService(/*ensureSynchronized*/ false).cleanupSemanticCache();

}

private cleanup() {

this.cleanProjects("inferred projects", this.projectService.inferredProjects);

this.cleanProjects("configured projects", arrayFrom(this.projectService.configuredProjects.values()));

this.cleanProjects("external projects", this.projectService.externalProjects);

if (this.host.gc) {

this.logger.info(`host.gc()`);

this.host.gc();

}

private getEncodedSemanticClassifications(args: protocol.EncodedSemanticClassificationsRequestArgs) {

const { file, project } = this.getFileAndProject(args);

return project.getLanguageService().getEncodedSemanticClassifications(file, args);

}

private getProject(projectFileName: string | undefined): Project | undefined {

return projectFileName === undefined ? undefined : this.projectService.findProject(projectFileName);

}

private getConfigFileAndProject(args: protocol.FileRequestArgs): { configFile: NormalizedPath | undefined, project: Project | undefined } {

const project = this.getProject(args.projectFileName);

const file = toNormalizedPath(args.file);

return {

configFile: project && project.hasConfigFile(file) ? file : undefined,

project

};

}

private getConfigFileDiagnostics(configFile: NormalizedPath, project: Project, includeLinePosition: boolean) {

const projectErrors = project.getAllProjectErrors();

const optionsErrors = project.getLanguageService().getCompilerOptionsDiagnostics();

const diagnosticsForConfigFile = filter(

concatenate(projectErrors, optionsErrors),

diagnostic => !!diagnostic.file && diagnostic.file.fileName === configFile

);

return includeLinePosition ?

this.convertToDiagnosticsWithLinePositionFromDiagnosticFile(diagnosticsForConfigFile) :

map(

diagnosticsForConfigFile,

diagnostic => formatConfigFileDiag(diagnostic, /*includeFileName*/ false)

);

}

private convertToDiagnosticsWithLinePositionFromDiagnosticFile(diagnostics: ReadonlyArray<Diagnostic>): protocol.DiagnosticWithLinePosition[] {

return diagnostics.map<protocol.DiagnosticWithLinePosition>(d => ({

message: flattenDiagnosticMessageText(d.messageText, this.host.newLine),

start: d.start!, // TODO: GH#18217

length: d.length!, // TODO: GH#18217

category: diagnosticCategoryName(d),

code: d.code,

startLocation: (d.file && convertToLocation(getLineAndCharacterOfPosition(d.file, d.start!)))!, // TODO: GH#18217

endLocation: (d.file && convertToLocation(getLineAndCharacterOfPosition(d.file, d.start! + d.length!)))!, // TODO: GH#18217

relatedInformation: map(d.relatedInformation, formatRelatedInformation)

}));

}

private getCompilerOptionsDiagnostics(args: protocol.CompilerOptionsDiagnosticsRequestArgs) {

const project = this.getProject(args.projectFileName)!;

// Get diagnostics that dont have associated file with them

// The diagnostics which have file would be in config file and

// would be reported as part of configFileDiagnostics

return this.convertToDiagnosticsWithLinePosition(

filter(

project.getLanguageService().getCompilerOptionsDiagnostics(),

diagnostic => !diagnostic.file

/*scriptInfo*/ undefined

);

}

private convertToDiagnosticsWithLinePosition(diagnostics: ReadonlyArray<Diagnostic>, scriptInfo: ScriptInfo | undefined): protocol.DiagnosticWithLinePosition[] {

return diagnostics.map(d => <protocol.DiagnosticWithLinePosition>{

message: flattenDiagnosticMessageText(d.messageText, this.host.newLine),

start: d.start,

length: d.length,

category: diagnosticCategoryName(d),

code: d.code,

source: d.source,

startLocation: scriptInfo && scriptInfo.positionToLineOffset(d.start!), // TODO: GH#18217

endLocation: scriptInfo && scriptInfo.positionToLineOffset(d.start! + d.length!),

reportsUnnecessary: d.reportsUnnecessary,

relatedInformation: map(d.relatedInformation, formatRelatedInformation),

});

}

private getDiagnosticsWorker(

args: protocol.FileRequestArgs, isSemantic: boolean, selector: (project: Project, file: string) => ReadonlyArray<Diagnostic>, includeLinePosition: boolean

): ReadonlyArray<protocol.DiagnosticWithLinePosition> | ReadonlyArray<protocol.Diagnostic> {

const { project, file } = this.getFileAndProject(args);

if (isSemantic && isDeclarationFileInJSOnlyNonConfiguredProject(project, file)) {

return emptyArray;

}

const scriptInfo = project.getScriptInfoForNormalizedPath(file);

const diagnostics = selector(project, file);

return includeLinePosition

? this.convertToDiagnosticsWithLinePosition(diagnostics, scriptInfo)

: diagnostics.map(d => formatDiag(file, project, d));

}

private getDefinition(args: protocol.FileLocationRequestArgs, simplifiedResult: boolean): ReadonlyArray<protocol.FileSpan> | ReadonlyArray<DefinitionInfo> {

const { file, project } = this.getFileAndProject(args);

const position = this.getPositionInFile(args, file);

const definitions = this.mapDefinitionInfoLocations(project.getLanguageService().getDefinitionAtPosition(file, position) || emptyArray, project);

return simplifiedResult ? this.mapDefinitionInfo(definitions, project) : definitions.map(Session.mapToOriginalLocation);

}

private mapDefinitionInfoLocations(definitions: ReadonlyArray<DefinitionInfo>, project: Project): ReadonlyArray<DefinitionInfo> {

return definitions.map((info): DefinitionInfo => {

const newLoc = getMappedLocation(documentSpanLocation(info), this.projectService, project);

return !newLoc ? info : {

containerKind: info.containerKind,

containerName: info.containerName,

fileName: newLoc.fileName,

kind: info.kind,

name: info.name,

textSpan: {

start: newLoc.pos,

length: info.textSpan.length

originalFileName: info.fileName,

originalTextSpan: info.textSpan,

};

});

}

private getDefinitionAndBoundSpan(args: protocol.FileLocationRequestArgs, simplifiedResult: boolean): protocol.DefinitionInfoAndBoundSpan | DefinitionInfoAndBoundSpan {

const { file, project } = this.getFileAndProject(args);

const position = this.getPositionInFile(args, file);

const scriptInfo = Debug.assertDefined(project.getScriptInfo(file));

const unmappedDefinitionAndBoundSpan = project.getLanguageService().getDefinitionAndBoundSpan(file, position);

if (!unmappedDefinitionAndBoundSpan || !unmappedDefinitionAndBoundSpan.definitions) {

return {

definitions: emptyArray,

textSpan: undefined! // TODO: GH#18217

};

}

const definitions = this.mapDefinitionInfoLocations(unmappedDefinitionAndBoundSpan.definitions, project);

const { textSpan } = unmappedDefinitionAndBoundSpan;

if (simplifiedResult) {

return {

definitions: this.mapDefinitionInfo(definitions, project),

textSpan: this.toLocationTextSpan(textSpan, scriptInfo)

};

}

return {

definitions: definitions.map(Session.mapToOriginalLocation),

textSpan,

};

}

private getEmitOutput(args: protocol.FileRequestArgs): EmitOutput {

const { file, project } = this.getFileAndProject(args);

return project.getLanguageService().getEmitOutput(file);

}

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TypeScript/src/server/session.ts at master · java08800/TypeScript · GitHub

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