Add interpreter and notebook support

Author: msujew

examples/average.loxnb

@@ -0,0 +1 @@
+{"cells":[{"kind":1,"language":"markdown","value":"## This is a vscode notebook for the Lox language\r\n\r\nIn the following we will show how to calculate the average of two number:"},{"kind":2,"language":"lox","value":"var min = 14;\r\nvar max = 22;\r\n\r\n// Can reassign an existing variable\r\nmin = 5;\r\n\r\n// Printing\r\nprint average(min, max);\r\nprint average(1, 3);\r\nprint average(2, 42);\r\n\r\nfun average(min: number, max: number): number {\r\n    return (min + max) / 2;\r\n}"}]}

package-lock.json

@@ -20,6 +20,15 @@
             "language": "lox",
             "scopeName": "source.lox",
             "path": "./syntaxes/lox.tmLanguage.json"
+        }],
+        "notebooks": [{
+            "type": "lox-notebook",
+            "displayName": "Lox Notebook",
+            "selector": [
+                {
+                    "filenamePattern": "*.loxnb"
+                }
+            ]
         }]
     },
     "activationEvents": [
@@ -47,18 +56,20 @@
         "chevrotain": "^9.1.0",
         "colors": "^1.4.0",
         "commander": "^8.0.0",
-        "langium": "0.5.0",
+        "langium": "1.0.1",
+        "uuid": "^9.0.0",
         "vscode-languageclient": "8.0.2",
         "vscode-languageserver": "8.0.2",
         "vscode-uri": "^3.0.2"
     },
     "devDependencies": {
         "@types/node": "^14.17.3",
+        "@types/uuid": "^9.0.0",
         "@types/vscode": "^1.56.0",
         "@typescript-eslint/eslint-plugin": "^4.14.1",
         "@typescript-eslint/parser": "^4.14.1",
         "eslint": "^7.19.0",
-        "langium-cli": "0.5.0",
+        "langium-cli": "1.0.0",
         "typescript": "^4.6.2"
     }
 }

package.json

@@ -3,12 +3,21 @@ import * as path from 'path';
 import {
     LanguageClient, LanguageClientOptions, ServerOptions, TransportKind
 } from 'vscode-languageclient/node';
+import { LoxNotebookSerializer } from './notebook/lox-notebook-serializer';
+import { LoxNotebookKernel } from './notebook/lox-notebook-kernel';
 
 let client: LanguageClient;
 
 // This function is called when the extension is activated.
 export function activate(context: vscode.ExtensionContext): void {
     client = startLanguageClient(context);
+
+    context.subscriptions.push(
+        vscode.workspace.registerNotebookSerializer(
+            'lox-notebook', new LoxNotebookSerializer(), { transientOutputs: true }
+        ),
+        new LoxNotebookKernel()
+    );
 }
 
 // This function is called when the extension is deactivated.
@@ -38,7 +47,15 @@ function startLanguageClient(context: vscode.ExtensionContext): LanguageClient {
 
     // Options to control the language client
     const clientOptions: LanguageClientOptions = {
-        documentSelector: [{ scheme: 'file', language: 'lox' }],
+        documentSelector: [
+            {
+                scheme: "file",
+                language: "lox"
+            }, {
+                scheme: 'vscode-notebook-cell', // only notebook cells
+                language: 'lox'
+            }
+        ],
         synchronize: {
             // Notify the server about file changes to files contained in the workspace
             fileEvents: fileSystemWatcher

src/extension.ts

@@ -0,0 +1,24 @@
+import { Command } from 'commander';
+import fs from 'fs';
+import { runInterpreter } from './runner';
+
+const program = new Command();
+
+program
+    .version(require('../../package.json').version);
+
+program
+    .command('run')
+    .argument('<file>')
+    .action(runCommand);
+
+program.parse(process.argv);
+
+async function runCommand(file: string): Promise<void> {
+    const now = Date.now();
+    const content = await fs.promises.readFile(file, 'utf-8');
+    await runInterpreter(content, {
+        log: value => console.log(`${value}`)
+    });
+    console.log(`Lox program finished running in ${Date.now() - now}ms`);
+}