langium
Version:
A language engineering tool for the Language Server Protocol
75 lines • 2.29 kB
JavaScript
/******************************************************************************
* Copyright 2025 TypeFox GmbH
* This program and the accompanying materials are made available under the
* terms of the MIT License, which is available in the project root.
******************************************************************************/
import { URI } from 'vscode-uri';
import { UriTrie } from '../utils/uri-utils.js';
export class VirtualFileSystemProvider {
constructor() {
this.trie = new UriTrie();
}
insert(uri, content) {
this.trie.insert(uri, content);
}
delete(uri) {
this.trie.delete(uri);
}
stat(uri) {
return Promise.resolve(this.statSync(uri));
}
statSync(uri) {
const node = this.trie.findNode(uri);
if (node) {
return {
isDirectory: node.element === undefined,
isFile: node.element !== undefined,
uri
};
}
else {
throw new Error('File not found');
}
}
exists(uri) {
return Promise.resolve(this.existsSync(uri));
}
existsSync(uri) {
return this.trie.findNode(uri) !== undefined;
}
readBinary(uri) {
return Promise.resolve(this.readBinarySync(uri));
}
readBinarySync(uri) {
const encoder = new TextEncoder();
return encoder.encode(this.readFileSync(uri));
}
readFile(uri) {
return Promise.resolve(this.readFileSync(uri));
}
readFileSync(uri) {
const data = this.trie.find(uri);
if (typeof data === 'string') {
return data;
}
else {
throw new Error('File not found');
}
}
readDirectory(uri) {
return Promise.resolve(this.readDirectorySync(uri));
}
readDirectorySync(uri) {
const node = this.trie.findNode(uri);
if (!node) {
throw new Error('Directory not found');
}
const children = this.trie.findChildren(uri);
return children.map(child => ({
isDirectory: child.element === undefined,
isFile: child.element !== undefined,
uri: URI.parse(child.uri)
}));
}
}
//# sourceMappingURL=virtual-file-system.js.map