Added auto completion for schema values

language-server/src/jsonc-instance.js

@@ -1,4 +1,4 @@
-import { findNodeAtLocation, parseTree } from "jsonc-parser";
+import { findNodeAtLocation, findNodeAtOffset, parseTree, getNodePath } from "jsonc-parser";
 import * as JsonPointer from "@hyperjump/json-pointer";
 import { getKeywordId } from "@hyperjump/json-schema/experimental";
 import { find, some } from "@hyperjump/pact";
@@ -181,6 +181,13 @@ export class JsoncInstance {
   textLength() {
     return this.node.length;
   }
+
+  getInstanceAtPosition(position) {
+    const node = findNodeAtOffset(this.root, this.textDocument.offsetAt(position));
+    const pathToNode = getNodePath(node);
+    const pointer = pathToNode.reduce((pointer, segment) => JsonPointer.append(segment, pointer), "");
+    return new JsoncInstance(this.textDocument, this.root, node, pointer, this.annotation);
+  }
 }
 
 const pointerSegments = function* (pointer) {

language-server/src/server.js

@@ -8,15 +8,16 @@ import {
   DidChangeConfigurationNotification,
   SemanticTokensBuilder,
   TextDocuments,
-  TextDocumentSyncKind
+  TextDocumentSyncKind,
+  CompletionItemKind
 } from "vscode-languageserver/node.js";
 import { TextDocument } from "vscode-languageserver-textdocument";
 import { readFile } from "node:fs/promises";
 import { fileURLToPath } from "node:url";
 
 // Hyperjump
 import { setMetaSchemaOutputFormat, setShouldValidateSchema } from "@hyperjump/json-schema";
-import { hasDialect, DETAILED } from "@hyperjump/json-schema/experimental";
+import { hasDialect, DETAILED, getDialectIds } from "@hyperjump/json-schema/experimental";
 import "@hyperjump/json-schema/draft-2020-12";
 import "@hyperjump/json-schema/draft-2019-09";
 import "@hyperjump/json-schema/draft-07";
@@ -67,6 +68,10 @@ connection.onInitialize(({ capabilities, workspaceFolders }) => {
       full: {
         delta: true
       }
+    },
+    completionProvider: {
+      resolveProvider: false,
+      triggerCharacters: ["\"", ":", " "]
     }
   };
 
@@ -367,5 +372,25 @@ connection.languages.semanticTokens.onDelta(async ({ textDocument, previousResul
   return builder.buildEdits();
 });
 
+// $SCHEMA COMPLETION
+connection.onCompletion((textDocumentPosition) => {
+  const doc = documents.get(textDocumentPosition.textDocument.uri);
+  if (!doc) {
+    return [];
+  }
+
+  const instance = JsoncInstance.fromTextDocument(doc);
+
+  const currentProperty = instance.getInstanceAtPosition(textDocumentPosition.position);
+  if (currentProperty.pointer.endsWith("/$schema")) {
+    return getDialectIds().map((uri) => {
+      return {
+        label: uri,
+        kind: CompletionItemKind.Value
+      };
+    });
+  }
+});
+
 connection.listen();
 documents.listen(connection);