GoTo Definition Support for LPython

client/package.json

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+{
+	"name": "lpyth-client",
+	"description": "VSCode part of LPython Language Server",
+	"author": "Ankita Sharma",
+	"license": "MIT",
+	"version": "0.0.1",
+	"publisher": "vscode",
+	"repository": {
+		"type": "git",
+		"url": "https://github.com/lcompilers/lpython-vscode-extension"
+	},
+	"engines": {
+		"vscode": "^1.63.0"
+	},
+	"dependencies": {
+		"vscode-languageclient": "^7.0.0"
+	},
+	"devDependencies": {
+		"@types/vscode": "^1.63.0",
+		"@vscode/test-electron": "^2.1.2"
+	}
+}

client/src/extension.ts

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+/* --------------------------------------------------------------------------------------------
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for license information.
+ * ------------------------------------------------------------------------------------------ */
+
+import * as path from 'path';
+import { workspace, ExtensionContext } from 'vscode';
+
+import {
+	LanguageClient,
+	LanguageClientOptions,
+	ServerOptions,
+	TransportKind
+} from 'vscode-languageclient/node';
+
+let client: LanguageClient;
+
+export function activate(context: ExtensionContext) {
+	// The server is implemented in node
+	const serverModule = context.asAbsolutePath(
+		path.join('out', 'server', 'src', 'server.js')
+	);
+	// The debug options for the server
+	// --inspect=6009: runs the server in Node's Inspector mode so VS Code can attach to the server for debugging
+	const debugOptions = { execArgv: ['--nolazy', '--inspect=6009'] };
+
+	// If the extension is launched in debug mode then the debug server options are used
+	// Otherwise the run options are used
+	const serverOptions: ServerOptions = {
+		run: { module: serverModule, transport: TransportKind.ipc },
+		debug: {
+			module: serverModule,
+			transport: TransportKind.ipc,
+			options: debugOptions
+		}
+	};
+
+	// Options to control the language client
+	const clientOptions: LanguageClientOptions = {
+		// Register the server for plain text documents
+		documentSelector: [{ scheme: 'file', language: 'LPython' }],
+		synchronize: {
+			// Notify the server about file changes to '.clientrc files contained in the workspace
+			fileEvents: workspace.createFileSystemWatcher('**/.clientrc')
+		}
+	};
+
+	// Create the language client and start the client.
+	client = new LanguageClient(
+		'LPythonLanguageServer',
+		'LPython language server',
+		serverOptions,
+		clientOptions
+	);
+
+	// Start the client. This will also launch the server
+	client.start();
+}
+
+export function deactivate(): Thenable<void> | undefined {
+	if (!client) {
+		return undefined;
+	}
+	return client.stop();
+}

client/tsconfig.json

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+{
+	"compilerOptions": {
+		"module": "commonjs",
+		"target": "es2020",
+		"lib": ["es2020"],
+		"outDir": "out",
+		"rootDir": "src",
+		"sourceMap": true
+	},
+	"include": ["src"],
+	"exclude": ["node_modules", ".vscode-test"]
+}

language-configuration.json

@@ -0,0 +1,56 @@
+{
+	"comments": {
+		"lineComment": "#",
+		"blockComment": [ "\"\"\"", "\"\"\"" ]
+	},
+	"brackets": [
+		["{", "}"],
+		["[", "]"],
+		["(", ")"]
+	],
+	"autoClosingPairs": [
+		{ "open": "{", "close": "}" },
+		{ "open": "[", "close": "]" },
+		{ "open": "(", "close": ")" },
+		{ "open": "\"", "close": "\"", "notIn": ["string"] },
+		{ "open": "r\"", "close": "\"", "notIn": ["string", "comment"] },
+		{ "open": "R\"", "close": "\"", "notIn": ["string", "comment"] },
+		{ "open": "u\"", "close": "\"", "notIn": ["string", "comment"] },
+		{ "open": "U\"", "close": "\"", "notIn": ["string", "comment"] },
+		{ "open": "f\"", "close": "\"", "notIn": ["string", "comment"] },
+		{ "open": "F\"", "close": "\"", "notIn": ["string", "comment"] },
+		{ "open": "b\"", "close": "\"", "notIn": ["string", "comment"] },
+		{ "open": "B\"", "close": "\"", "notIn": ["string", "comment"] },
+		{ "open": "'", "close": "'", "notIn": ["string", "comment"] },
+		{ "open": "r'", "close": "'", "notIn": ["string", "comment"] },
+		{ "open": "R'", "close": "'", "notIn": ["string", "comment"] },
+		{ "open": "u'", "close": "'", "notIn": ["string", "comment"] },
+		{ "open": "U'", "close": "'", "notIn": ["string", "comment"] },
+		{ "open": "f'", "close": "'", "notIn": ["string", "comment"] },
+		{ "open": "F'", "close": "'", "notIn": ["string", "comment"] },
+		{ "open": "b'", "close": "'", "notIn": ["string", "comment"] },
+		{ "open": "B'", "close": "'", "notIn": ["string", "comment"] },
+		{ "open": "`", "close": "`", "notIn": ["string"] }
+	],
+	"surroundingPairs": [
+		["{", "}"],
+		["[", "]"],
+		["(", ")"],
+		["\"", "\""],
+		["'", "'"],
+		["`", "`"]
+	],
+	"folding": {
+		"offSide": true,
+		"markers": {
+			"start": "^\\s*#\\s*region\\b",
+			"end": "^\\s*#\\s*endregion\\b"
+		}
+	},
+	"onEnterRules": [
+		{
+			"beforeText": "^\\s*(?:def|class|for|if|elif|else|while|try|with|finally|except|async).*?:\\s*$",
+			"action": { "indent": "indent" }
+		}
+	]
+}