67 lines
2.4 KiB
JavaScript
67 lines
2.4 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.createLanguageContext = void 0;
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const virtualFiles_1 = require("./virtualFiles");
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function createLanguageContext(rawHost, languages) {
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let host = rawHost;
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let lastRootFiles = new Map();
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let lastProjectVersion;
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const virtualFiles = (0, virtualFiles_1.createVirtualFiles)(languages);
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for (const language of languages.reverse()) {
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if (language.resolveHost) {
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const pastHost = host;
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let proxyHost = language.resolveHost(host);
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if (proxyHost === pastHost) {
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console.warn(`[volar] language.resolveHost() should not return the same host instance.`);
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proxyHost = { ...proxyHost };
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}
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host = new Proxy(proxyHost, {
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get(target, p) {
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if (p in target) {
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return target[p];
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}
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return pastHost[p];
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}
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});
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}
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}
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return {
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rawHost,
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host,
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virtualFiles: new Proxy(virtualFiles, {
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get: (target, property) => {
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syncVirtualFiles();
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return target[property];
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},
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}),
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};
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function syncVirtualFiles() {
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const newProjectVersion = host.getProjectVersion();
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const shouldUpdate = newProjectVersion !== lastProjectVersion;
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if (!shouldUpdate)
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return;
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const nowRootFiles = new Map();
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const remainRootFiles = new Set(lastRootFiles.keys());
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for (const rootFileName of host.getScriptFileNames()) {
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nowRootFiles.set(rootFileName, host.getScriptSnapshot(rootFileName));
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}
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for (const [fileName, snapshot] of nowRootFiles) {
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remainRootFiles.delete(fileName);
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if (lastRootFiles.get(fileName) !== nowRootFiles.get(fileName)) {
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if (snapshot) {
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virtualFiles.updateSource(fileName, snapshot, host.getLanguageId?.(fileName));
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}
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else {
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virtualFiles.deleteSource(fileName);
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}
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}
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}
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for (const fileName of remainRootFiles) {
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virtualFiles.deleteSource(fileName);
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}
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lastRootFiles = nowRootFiles;
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lastProjectVersion = newProjectVersion;
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}
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}
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exports.createLanguageContext = createLanguageContext;
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//# sourceMappingURL=languageContext.js.map
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