TypeScript/src/services/codeFixProvider.ts at main · unknownDev31/TypeScript · GitHub

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import {

arrayFrom,

cast,

CodeActionCommand,

CodeFixAction,

CodeFixAllContext,

CodeFixContext,

CodeFixContextBase,

CodeFixRegistration,

CombinedCodeActions,

computeSuggestionDiagnostics,

contains,

createMultiMap,

Debug,

Diagnostic,

DiagnosticOrDiagnosticAndArguments,

diagnosticToString,

DiagnosticWithLocation,

FileTextChanges,

flatMap,

isString,

map,

TextChange,

textChanges,

} from "./_namespaces/ts";

const errorCodeToFixes = createMultiMap<string, CodeFixRegistration>();

const fixIdToRegistration = new Map<string, CodeFixRegistration>();

/** @internal */

export function createCodeFixActionWithoutFixAll(fixName: string, changes: FileTextChanges[], description: DiagnosticOrDiagnosticAndArguments) {

return createCodeFixActionWorker(fixName, diagnosticToString(description), changes, /*fixId*/ undefined, /*fixAllDescription*/ undefined);

}

/** @internal */

export function createCodeFixAction(fixName: string, changes: FileTextChanges[], description: DiagnosticOrDiagnosticAndArguments, fixId: {}, fixAllDescription: DiagnosticOrDiagnosticAndArguments, command?: CodeActionCommand): CodeFixAction {

return createCodeFixActionWorker(fixName, diagnosticToString(description), changes, fixId, diagnosticToString(fixAllDescription), command);

}

/** @internal */

export function createCodeFixActionMaybeFixAll(fixName: string, changes: FileTextChanges[], description: DiagnosticOrDiagnosticAndArguments, fixId?: {}, fixAllDescription?: DiagnosticOrDiagnosticAndArguments, command?: CodeActionCommand) {

return createCodeFixActionWorker(fixName, diagnosticToString(description), changes, fixId, fixAllDescription && diagnosticToString(fixAllDescription), command);

}

function createCodeFixActionWorker(fixName: string, description: string, changes: FileTextChanges[], fixId?: {}, fixAllDescription?: string, command?: CodeActionCommand): CodeFixAction {

return { fixName, description, changes, fixId, fixAllDescription, commands: command ? [command] : undefined };

}

/** @internal */

export function registerCodeFix(reg: CodeFixRegistration) {

for (const error of reg.errorCodes) {

errorCodeToFixesArray = undefined;

errorCodeToFixes.add(String(error), reg);

}

if (reg.fixIds) {

for (const fixId of reg.fixIds) {

Debug.assert(!fixIdToRegistration.has(fixId));

fixIdToRegistration.set(fixId, reg);

}

let errorCodeToFixesArray: readonly string[] | undefined;

/** @internal */

export function getSupportedErrorCodes(): readonly string[] {

return errorCodeToFixesArray ??= arrayFrom(errorCodeToFixes.keys());

}

function removeFixIdIfFixAllUnavailable(registration: CodeFixRegistration, diagnostics: Diagnostic[]) {

const { errorCodes } = registration;

let maybeFixableDiagnostics = 0;

for (const diag of diagnostics) {

if (contains(errorCodes, diag.code)) maybeFixableDiagnostics++;

if (maybeFixableDiagnostics > 1) break;

}

const fixAllUnavailable = maybeFixableDiagnostics < 2;

return ({ fixId, fixAllDescription, ...action }: CodeFixAction): CodeFixAction => {

return fixAllUnavailable ? action : { ...action, fixId, fixAllDescription };

};

}

/** @internal */

export function getFixes(context: CodeFixContext): readonly CodeFixAction[] {

const diagnostics = getDiagnostics(context);

const registrations = errorCodeToFixes.get(String(context.errorCode));

return flatMap(registrations, f => map(f.getCodeActions(context), removeFixIdIfFixAllUnavailable(f, diagnostics)));

}

/** @internal */

export function getAllFixes(context: CodeFixAllContext): CombinedCodeActions {

// Currently fixId is always a string.

return fixIdToRegistration.get(cast(context.fixId, isString))!.getAllCodeActions!(context);

}

/** @internal */

export function createCombinedCodeActions(changes: FileTextChanges[], commands?: CodeActionCommand[]): CombinedCodeActions {

return { changes, commands };

}

/** @internal */

export function createFileTextChanges(fileName: string, textChanges: TextChange[]): FileTextChanges {

return { fileName, textChanges };

}

/** @internal */

export function codeFixAll(

context: CodeFixAllContext,

errorCodes: number[],

use: (changes: textChanges.ChangeTracker, error: DiagnosticWithLocation, commands: CodeActionCommand[]) => void,

): CombinedCodeActions {

const commands: CodeActionCommand[] = [];

const changes = textChanges.ChangeTracker.with(context, t => eachDiagnostic(context, errorCodes, diag => use(t, diag, commands)));

return createCombinedCodeActions(changes, commands.length === 0 ? undefined : commands);

}

/** @internal */

export function eachDiagnostic(context: CodeFixAllContext, errorCodes: readonly number[], cb: (diag: DiagnosticWithLocation) => void): void {

for (const diag of getDiagnostics(context)) {

if (contains(errorCodes, diag.code)) {

cb(diag as DiagnosticWithLocation);

}

function getDiagnostics({ program, sourceFile, cancellationToken }: CodeFixContextBase) {

return [

...program.getSemanticDiagnostics(sourceFile, cancellationToken),

...program.getSyntacticDiagnostics(sourceFile, cancellationToken),

...computeSuggestionDiagnostics(sourceFile, program, cancellationToken)

];

}

TypeScript/src/services/codeFixProvider.ts at main · unknownDev31/TypeScript · GitHub

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