@typespec/compiler/dist/src/server/file-service.js

TypeSpec Compiler Preview

import { getNormalizedRealPath } from "../utils/misc.js";
export function createFileService({ serverHost }) {
    const compilerHost = serverHost.compilerHost;
    // Remember original URL when we convert it to a local path so that we can
    // get it back. We can't convert it back because things like URL-encoding
    // could give us back an equivalent but non-identical URL but the original
    // URL is used as a key into the opened documents and so we must reproduce
    // it exactly.
    const pathToURLMap = new Map();
    return {
        upToDate,
        fileURLToRealPath,
        getPath,
        getURL,
        getOpenDocument,
    };
    /**
     * Determine if the given document is the latest version.
     *
     * A document can become out-of-date if a change comes in during an async
     * operation.
     */
    function upToDate(document) {
        if (!("version" in document)) {
            return true;
        }
        return document.version === serverHost.getOpenDocumentByURL(document.uri)?.version;
    }
    async function fileURLToRealPath(url) {
        return getNormalizedRealPath(compilerHost, compilerHost.fileURLToPath(url));
    }
    async function getPath(document) {
        if (isUntitled(document.uri)) {
            return document.uri;
        }
        const path = await fileURLToRealPath(document.uri);
        pathToURLMap.set(path, document.uri);
        return path;
    }
    function getURL(path) {
        if (isUntitled(path)) {
            return path;
        }
        return pathToURLMap.get(path) ?? compilerHost.pathToFileURL(path);
    }
    function getOpenDocument(path) {
        const url = getURL(path);
        return url ? serverHost.getOpenDocumentByURL(url) : undefined;
    }
}
function isUntitled(pathOrUrl) {
    return pathOrUrl.startsWith("untitled:");
}
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