Refactoring code to match bash-language-server

  - Can parse active document
  - Logging functionality

.vscode/settings.json

@@ -3,6 +3,9 @@
   "typescript.tsc.autoDetect": "off",
   "typescript.preferences.quoteStyle": "single",
   "editor.codeActionsOnSave": {
-    "source.fixAll.eslint": true
-  }
+    "source.fixAll.eslint": "explicit"
+  },
+  "cSpell.words": [
+    "Karabel"
+  ]
 }

server/src/analyzer.ts

@@ -0,0 +1,45 @@
+/* --------------------------------------------------------------------------------------------
+ * Copyright (c) 2023 Andreas Heuermann, Osman Karabel
+ * Licensed under the MIT License. See License.txt in the project root for license information.
+ * ------------------------------------------------------------------------------------------ */
+
+import * as LSP from 'vscode-languageserver/node';
+import { TextDocument } from 'vscode-languageserver-textdocument';
+
+import { Query } from 'web-tree-sitter';
+import Parser = require('web-tree-sitter');
+
+import { logger } from './util/logger';
+
+type AnalyzedDocument = {
+  document: TextDocument;
+  tree: Parser.Tree
+}
+
+export default class Analyzer {
+  private parser: Parser;
+  private uriToAnalyzedDocument: Record<string, AnalyzedDocument | undefined> = {};
+
+  constructor (parser: Parser) {
+    this.parser = parser;
+  }
+
+  public analyze(document: TextDocument): LSP.Diagnostic[] {
+    logger.debug('analyze:');
+
+    const diagnostics: LSP.Diagnostic[] = [];
+    const fileContent = document.getText();
+    const uri = document.uri;
+
+    const tree = this.parser.parse(fileContent);
+    logger.debug(tree.rootNode.toString());
+
+    // Update saved analysis for document uri
+    this.uriToAnalyzedDocument[uri] = {
+      document,
+      tree
+    };
+
+    return diagnostics;
+  }
+}

server/src/parser.ts

@@ -1,3 +1,8 @@
+/* --------------------------------------------------------------------------------------------
+ * Copyright (c) 2023 Andreas Heuermann, Osman Karabel
+ * Licensed under the MIT License. See License.txt in the project root for license information.
+ * ------------------------------------------------------------------------------------------ */
+
 import * as Parser from 'web-tree-sitter';
 
 /**