first commit

node_modules/@volar/language-core/out/languageContext.js

@@ -0,0 +1,68 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.createLanguageContext = void 0;
+const virtualFiles_1 = require("./virtualFiles");
+;
+function createLanguageContext(rawHost, languages) {
+    let host = rawHost;
+    let lastRootFiles = new Map();
+    let lastProjectVersion;
+    const virtualFiles = (0, virtualFiles_1.createVirtualFiles)(languages);
+    for (const language of languages.reverse()) {
+        if (language.resolveHost) {
+            const pastHost = host;
+            let proxyHost = language.resolveHost(host);
+            if (proxyHost === pastHost) {
+                console.warn(`[volar] language.resolveHost() should not return the same host instance.`);
+                proxyHost = { ...proxyHost };
+            }
+            host = new Proxy(proxyHost, {
+                get(target, p) {
+                    if (p in target) {
+                        return target[p];
+                    }
+                    return pastHost[p];
+                }
+            });
+        }
+    }
+    return {
+        rawHost,
+        host,
+        virtualFiles: new Proxy(virtualFiles, {
+            get: (target, property) => {
+                syncVirtualFiles();
+                return target[property];
+            },
+        }),
+    };
+    function syncVirtualFiles() {
+        const newProjectVersion = host.getProjectVersion();
+        const shouldUpdate = newProjectVersion !== lastProjectVersion;
+        if (!shouldUpdate)
+            return;
+        const nowRootFiles = new Map();
+        const remainRootFiles = new Set(lastRootFiles.keys());
+        for (const rootFileName of host.getScriptFileNames()) {
+            nowRootFiles.set(rootFileName, host.getScriptSnapshot(rootFileName));
+        }
+        for (const [fileName, snapshot] of nowRootFiles) {
+            remainRootFiles.delete(fileName);
+            if (lastRootFiles.get(fileName) !== nowRootFiles.get(fileName)) {
+                if (snapshot) {
+                    virtualFiles.updateSource(fileName, snapshot, host.getLanguageId?.(fileName));
+                }
+                else {
+                    virtualFiles.deleteSource(fileName);
+                }
+            }
+        }
+        for (const fileName of remainRootFiles) {
+            virtualFiles.deleteSource(fileName);
+        }
+        lastRootFiles = nowRootFiles;
+        lastProjectVersion = newProjectVersion;
+    }
+}
+exports.createLanguageContext = createLanguageContext;
+//# sourceMappingURL=languageContext.js.map