Merge pull request #2 from chrisvrose/exec-terminal

Execution Tasks

.gitignore

@@ -1,3 +1,4 @@
+client/.antlr
 test.bf
 out
 dist

.vscode/settings.json

@@ -1,9 +1,8 @@
 {
-	"editor.insertSpaces": false,
 	"tslint.enable": true,
 	"typescript.tsc.autoDetect": "off",
 	"typescript.preferences.quoteStyle": "single",
 	"editor.codeActionsOnSave": {
-		"source.fixAll.eslint": true
+		"source.fixAll.eslint": "explicit"
 	}
 }

LICENSE

@@ -0,0 +1,201 @@
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+                           Version 2.0, January 2004
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+
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+   limitations under the License.

README.md

@@ -1,21 +1,55 @@
 # BF extension
 
-A simple language server based VSCode Extension for the ~~Brainfuck~~ ~~Branflakes~~ BF language. You can also execute your code and see its output.
+A simple language server based VSCode Extension for the (Branflakes?) (BrainFuck?) BF language. You can also execute your code and see its output.
+
+![BF](./assets/screenshot.png)
 
-![BF](https://chrisvrose.github.io/static/projects/screenshots/bf-server.png)
 ## Functionality
 
-- [X] Syntax
-- [X] Bracket matching
-- [X] Autocomplete suggestions
-- [X] Extension icon
-- [X] Execution
-  - [ ] Timeout
+- Syntax Highlighting
+- Execution
+- Autocomplete suggestions
+
 
 ### Execution
 
-Use the command to execute the code. 
-Issue is, because BF is a *turing complete* language, there is no way to know if the program will terminate or not. Hence for now, the command may lead to infinite execution. 
-Additionally, all input is done before program execution (If the program requests for input that hasn't been provided, `zero` is fed to it).
+Use the BF execute task to execute the code. 
+Either run the "current file" task, or create a customized task with the required file.
+I/O is done on the created terminal window.
 
-TODO: Implement a timeout.
+
+There is also an older command to run the code, where output is shown as a status message. Here, if the program requires input, it will be requested as a prompt.
+
+### Changelog
+
+#### 0.3.0
+
+![command](./assets/command.gif)
+
+- Added a task for execution
+  - Press Control C to halt it while its waiting for input
+  - Close task to abort execution
+    - Detail: The program will halt between loop iterations.
+- Migrated the run command to `bf.execute.old`
+
+#### 0.2.1
+
+- Change category
+- Small bugfix for brackets validation
+
+#### 0.2.0
+
+- Cycle input pointer on overflow/underflow
+- Refactoring code
+
+#### 0.1.0
+
+- Request input as required during execution
+- Using array-based indexing. This implies that only positive indices upto 30k are supported.
+
+
+### Building it
+
+1. `npm i` - Install all dependencies
+2. `npm i -g @vscode/vsce` - Install VSCode Command line CLI
+3. `vsce package` - Package to VSIX

client/src/BranFlakesExecutorGen.ts

@@ -0,0 +1,20 @@
+import { EventEmitter } from 'vscode';
+import InputStrategy from './input/InputStrategy';
+import {BranFlakesExecutorVisitor} from './exec/BranFlakesExecutorVisitor';
+
+export class BranFlakesStreamingExecutor {
+
+	constructor(private fileData: string, private fileName: string = 'fileName:dummy', private emitter: EventEmitter<string>,
+        private inputStrategy: InputStrategy
+	) { }
+
+
+	async run() {
+		const finalOutput = await BranFlakesExecutorVisitor.run(
+			this.fileData,
+			this.fileName,
+			this.inputStrategy,
+			async (str) => { this.emitter.fire(str); }
+		);
+	}
+}

client/src/BranFlakesParseRunner.ts

@@ -16,9 +16,9 @@ export interface TranslationError {
 export function getTree(str: string, fn: string) {
 	const charStreams = CharStreams.fromString(str, fn);
 	const lexer = new bfLexer(charStreams);
-	// const errorListener = this.errorManager.newErrorListener();
 	const issues: TranslationError[] = [];
 	// remove the error listener. We want to put our own
+	
 	lexer.removeErrorListeners();
 	lexer.addErrorListener({
 		syntaxError(source, o, line, charPositionInLine, msg, error) {

client/src/bfExecutor.ts

@@ -1,117 +0,0 @@
-import { AbstractParseTreeVisitor } from 'antlr4ts/tree/AbstractParseTreeVisitor';
-import { LoopStmtContext, ProgramContext } from '../../client/src/generated/bfParser';
-import { bfVisitor } from '../../client/src/generated/bfVisitor';
-import {getTree} from './bfGrammar';
-import { DiagnosticSeverity } from 'vscode-languageserver-types';
-
-/**
- * Run BF code
- * @param text 
- * @param fn 
- * @param input 
- * @returns 
- */
-export async function runBF(text:string,fn:string,input:string){
-	//get tree and issues
-	const {tree,issues} = getTree(text,fn);
-
-	//get only errors
-	const x = issues.filter(e=>e.type===DiagnosticSeverity.Error);
-	//if any error, drop
-	if(x.length>0) {
-		throw Error('Errors exist');
-	}
-	// make visitor
-	const vis = new BFExecutor(input);
-	
-	//visit the tree
-	vis.visit(tree);
-
-	//get output
-	return vis.outputStr;
-}
-
-
-class BFExecutor
-	extends AbstractParseTreeVisitor<void>
-	implements bfVisitor<void> {
-
-	/**
-	 * 
-	 * @param input Input string
-	 * @param inputPtr Input pointer to start from
-	 */
-	constructor(protected input: string='', protected inputPtr: number = 0) {
-		super();
-	}
-	/**
-	 * The memory cells (Can work with negative cells this way)
-	 */
-    protected cells: Map<number, number> = new Map();
-    /**
-	 * Pointer
-	 */
-	protected ptr: number = 0;
-	/** Output string */
-	protected outputStrArray:string[]=[];
-
-	/**
-	 * Output string (Available only after visiting)
-	 */
-	public get outputStr(){
-		return this.outputStrArray.join('');
-	}
-
-
-	defaultResult() {}
-
-	visitLoopStmt(ctx:LoopStmtContext){
-		while((this.cells.get(this.ptr)??0)!==0){
-			this.visitChildren(ctx);
-		}
-	}
-	visitPtrLeft() {
-		
-		--this.ptr;
-	}
-	visitPtrRight() {
-		++this.ptr;
-	}
-	visitPtrIncr() {
-
-    	const val = this.cells.get(this.ptr);
-    	if (val === undefined) {
-    		this.cells.set(this.ptr, 1);
-		} else if(val===255){
-			this.cells.delete(this.ptr);
-		}else{
-    		this.cells.set(this.ptr, val + 1);
-    	}
-	}
-	visitPtrDecr() {
-		// console.log('down',this.ptr,this.cells);
-
-    	const val = this.cells.get(this.ptr);
-    	if (val === undefined || val === 0) {
-    		this.cells.set(this.ptr, 255);
-    	} else if(val===1){
-			this.cells.delete(this.ptr);
-		}else{
-    		this.cells.set(this.ptr, val - 1);
-    	}
-	}
-	visitOutputStmt() {
-		const val = this.cells.get(this.ptr)??0;
-		const str = String.fromCharCode(val);
-		// console.log('op',str);
-		this.outputStrArray.push(str);
-	}
-
-	visitInputStmt(){
-		//get char
-		const char = this.input.charCodeAt(this.inputPtr)??0;
-		//increment the input pointer after this
-		this.inputPtr++;
-		this.cells.set(this.ptr,char);
-	}
-}

client/src/command/BranFlakesCommand.ts

@@ -0,0 +1,4 @@
+export interface BranFlakesCommand {
+    getCommandName(): string;
+    getCommandHandler(): (...args: any) => Promise<any>;
+}

client/src/command/CompileBranFlakesCommand.ts

@@ -0,0 +1,29 @@
+import { window } from 'vscode';
+import type { BranFlakesCommand } from './BranFlakesCommand';
+import { VSCodePromptInputStrategy } from '../input/VSCodePromptInputStrategy';
+
+export class CompileBranFlakesCommand implements BranFlakesCommand {
+	getCommandName() {
+		return 'bf.execute.old';
+	}
+	getCommandHandler() {
+		return async () => {
+			const text = window.activeTextEditor.document.getText();
+			const fn = window.activeTextEditor.document.fileName;
+			const inputStrategy = new VSCodePromptInputStrategy(
+				window.showInputBox
+			);
+			const { BranFlakesExecutorVisitor } = await import(
+				'../exec/BranFlakesExecutorVisitor'
+			);
+
+			const output = await BranFlakesExecutorVisitor.run(
+				text,
+				fn,
+				inputStrategy,
+				window.showInformationMessage
+			);
+			await window.showInformationMessage(`Output: ${output}`);
+		};
+	}
+}

client/src/exec/AbortRequestor.ts

@@ -0,0 +1,11 @@
+
+export class AbortClassRequestor{
+    private abortRequest=false;
+
+    requestAbort(){
+    	this.abortRequest=true;
+    }
+    isAborted(){
+    	return this.abortRequest;
+    }    
+}

client/src/exec/BranFlakesExecutorVisitor.ts

@@ -0,0 +1,147 @@
+import { AbstractParseTreeVisitor } from 'antlr4ts/tree/AbstractParseTreeVisitor';
+import { LoopStmtContext } from '../generated/bfParser';
+import { bfVisitor } from '../generated/bfVisitor';
+import { DiagnosticSeverity } from 'vscode-languageclient';
+import { getTree } from '../BranFlakesParseRunner';
+import { RuleNode } from 'antlr4ts/tree/RuleNode';
+import type InputStrategy from '../input/InputStrategy';
+import { AbortClassRequestor } from './AbortRequestor';
+
+export class BranFlakesExecutorVisitor
+	extends AbstractParseTreeVisitor<Promise<void>>
+	implements bfVisitor<Promise<void>> {
+	/**
+	 *
+	 * @param input Input string
+	 * @param inputPtr Input pointer to start from
+	 */
+	constructor(
+		private inputStrategy: InputStrategy,
+		private logger: (val: string) => Thenable<void>,
+		private abortRequestor?: AbortClassRequestor,
+		private inputPtr: number = 0
+	) {
+		super();
+	}
+	// /**
+	//  * The memory cells (Can work with negative cells this way)
+	//  */
+	// private cells: Map<number, number> = new Map();
+
+	private byteArraySize: number = 30000;
+	private byteArray: Int8Array = new Int8Array(this.byteArraySize);
+	/**
+	 * Pointer
+	 */
+	private ptr: number = 0;
+	/** Output string */
+	private outputStr: string = '';
+
+
+	defaultResult() {
+		return Promise.resolve();
+	}
+	/**
+	 * Run a file
+	 * @param text
+	 * @param fn
+	 * @param inputStrategy
+	 * @returns
+	 */
+	static async run(
+		text: string,
+		fn: string,
+		inputStrategy: InputStrategy,
+		logger: (str: string) => Thenable<void>,
+		aborter?: AbortClassRequestor
+	) {
+		//get tree and issues
+		const { tree, issues } = getTree(text, fn);
+
+		//get only errors
+		const x = issues.filter(e => e.type === DiagnosticSeverity.Error);
+		//if any error, drop
+		if (x.length > 0) {
+			throw Error('Errors exist');
+		}
+		// make visitor
+		const vis = new BranFlakesExecutorVisitor(inputStrategy, logger, aborter);
+		//visit the tree
+		await vis.visit(tree);
+
+		//get output
+		return vis.outputStr;
+	}
+
+	getCell(pointerIndex: number) {
+		return this.byteArray[pointerIndex];
+	}
+	setCell(pointerIndex: number, value: number): void {
+		this.byteArray[pointerIndex] = value;
+	}
+
+	async visitLoopStmt(ctx: LoopStmtContext) {
+		while ((this.getCell(this.ptr) ?? 0) !== 0) {
+			await this.visitChildren(ctx);
+		}
+	}
+	async visitPtrLeft() {
+		this.ptr = (this.ptr + this.byteArraySize - 1) % this.byteArraySize;
+	}
+	async visitPtrRight() {
+		this.ptr = (this.ptr + this.byteArraySize + 1) % this.byteArraySize;
+	}
+	async visitPtrIncr() {
+		const val = this.getCell(this.ptr);
+		this.setCell(this.ptr, (val + 1) % 256);
+	}
+	async visitPtrDecr() {
+		const val = this.getCell(this.ptr);
+		this.setCell(this.ptr, (val + 255) % 256);
+	}
+	async visitOutputStmt() {
+		const val = this.getCell(this.ptr) ?? 0;
+		const str = String.fromCharCode(val);
+
+		this.outputStr += str;
+		await this.logger(str);
+	}
+
+	async visitInputStmt() {
+		//get char
+		const char = (await this.inputStrategy.getInput()) ?? 0;
+		if (char === 3) { throw Error('Halt input wait'); }
+		//increment the input pointer after this
+		this.inputPtr++;
+		this.setCell(this.ptr, char);
+	}
+
+	// override for maintaining async
+	async visitChildren(node: RuleNode): Promise<void> {
+		let result = this.defaultResult();
+		await result;
+		let n = node.childCount;
+		for (let i = 0; i < n; i++) {
+			if (!this.shouldVisitNextChild(node, result)) {
+				break;
+			}
+			let c = node.getChild(i);
+			let childResult = c.accept(this);
+			result = this.aggregateResult(result, childResult);
+			await result;
+		}
+		// break for any close requests
+		return new Promise((res, rej) => {
+
+			setTimeout(() => { if (this.abortRequestor?.isAborted()??false) {rej('aborted');} else {res(undefined);} }, 0);
+		});
+	}
+	// override for maintaining async
+	protected async aggregateResult(
+		aggregate: Promise<void>,
+		nextResult: Promise<void>
+	): Promise<void> {
+		await aggregate;
+		return nextResult;
+	}
+}

client/src/extension.ts

@@ -4,18 +4,21 @@
  * ------------------------------------------------------------------------------------------ */
 
 import * as path from 'path';
-import { workspace, ExtensionContext,commands, window } from 'vscode';
-import {runBF} from './bfExecutor';
+import { commands, tasks, workspace,window } from 'vscode';
+import type { Disposable, ExtensionContext } from 'vscode';
 import {
 	LanguageClient,
 	LanguageClientOptions,
 	ServerOptions,
-	TransportKind
+	TransportKind,
 } from 'vscode-languageclient';
-
+import { CompileBranFlakesCommand } from './command/CompileBranFlakesCommand';
+import { CustomExecutionTaskProvider } from './task/CustomExecutionTerminal';
 
 let client: LanguageClient;
 
+let bfRunTaskProvider: Disposable;
+
 export function activate(context: ExtensionContext) {
 	// The server is implemented in node
 	let serverModule = context.asAbsolutePath(
@@ -32,26 +35,28 @@ export function activate(context: ExtensionContext) {
 		debug: {
 			module: serverModule,
 			transport: TransportKind.ipc,
-			options: debugOptions
-		}
+			options: debugOptions,
+		},
 	};
 
 	// Options to control the language client
 	let clientOptions: LanguageClientOptions = {
 		// Register the server for plain text documents
-		documentSelector: [{ scheme: 'file', language: 'bf' }]
+		documentSelector: [{ scheme: 'file', language: 'bf' }],
 	};
 
-	const command = 'bf.execute';
-	const commandHandler = async()=>{
-		const text= window.activeTextEditor.document.getText();
-		const fn = window.activeTextEditor.document.fileName;
-		const input = await window.showInputBox({prompt:'Enter input (If not enough, program will assume 0)'});
-		const output = await runBF(text,fn,input);
-		await window.showInformationMessage(`Output: ${output}`);
-	};
+	const branFlakesCommands = [new CompileBranFlakesCommand()];
+	for (let branFlakesCommand of branFlakesCommands) {
+		context.subscriptions.push(
+			commands.registerCommand(
+				branFlakesCommand.getCommandName(),
+				branFlakesCommand.getCommandHandler()
+			),
+
+
+		);
+	}
 
-	context.subscriptions.push(commands.registerCommand(command,commandHandler));
 
 	// Create the language client and start the client.
 	client = new LanguageClient(
@@ -63,11 +68,17 @@ export function activate(context: ExtensionContext) {
 
 	// Start the client. This will also launch the server
 	client.start();
+
+	const workspaceRoot = (workspace.workspaceFolders && (workspace.workspaceFolders.length > 0))
+		? workspace.workspaceFolders[0].uri.fsPath : undefined;
+	
+	bfRunTaskProvider = tasks.registerTaskProvider(CustomExecutionTaskProvider.type, new CustomExecutionTaskProvider(workspaceRoot));
 }
 
 export function deactivate(): Thenable<void> | undefined {
 	if (!client) {
 		return undefined;
 	}
-	return client.stop();
+	bfRunTaskProvider?.dispose();
+	client?.stop();
 }

client/src/input/InputStrategy.ts

@@ -0,0 +1,4 @@
+
+export default interface InputStrategy {
+	getInput(): Promise<number>;
+};

client/src/input/VSCodePromptInputStrategy.ts

@@ -0,0 +1,33 @@
+import type { CancellationToken, InputBoxOptions } from 'vscode';
+import type InputStrategy from './InputStrategy';
+
+export class VSCodePromptInputStrategy implements InputStrategy {
+    private inputQueue: string = '';
+    constructor(
+        private requestor: (
+            promptOptions?: InputBoxOptions,
+            cancelToken?: CancellationToken
+        ) => Thenable<string>
+    ) { }
+
+    async getInput(): Promise<number> {
+    	while (this.inputQueue.length === 0) {
+    		await this.requestInputFromPrompt();
+    	}
+    	const character = this.popInputFromQueue();
+
+    	return character;
+    }
+    private popInputFromQueue() {
+    	const character = this.inputQueue.charCodeAt(0);
+    	this.inputQueue = this.inputQueue.substring(1);
+    	return character;
+    }
+
+    private async requestInputFromPrompt() {
+    	const inputPrompt = await this.requestor({
+    		prompt: 'More input is required. Please provide input:',
+    	});
+    	this.inputQueue += inputPrompt;
+    }
+}

client/src/task/CustomExecutionTerminal.ts

@@ -0,0 +1,152 @@
+import * as vscode from 'vscode';
+import * as path from 'path';
+import { BranFlakesExecutorVisitor } from '../exec/BranFlakesExecutorVisitor';
+import { AbortClassRequestor } from '../exec/AbortRequestor';
+
+interface BFRunTaskDefinition extends vscode.TaskDefinition {
+	file?: string;
+}
+
+export class CustomExecutionTaskProvider implements vscode.TaskProvider {
+	static type: string = 'bf-run';
+	tasks: vscode.Task[] | undefined;
+
+	constructor(private workspaceRoot: string | undefined) {
+
+	}
+
+	provideTasks(token?: vscode.CancellationToken): vscode.ProviderResult<vscode.Task[]> {
+		if (this.tasks !== undefined) { return this.tasks; }
+
+		this.tasks = [this.getTaskFromDefinition(undefined)];
+		return this.tasks;
+	}
+
+
+	getTaskFromDefinition(fileName: string | undefined): vscode.Task {
+		const definition: BFRunTaskDefinition = {
+			type: CustomExecutionTaskProvider.type,
+			file: fileName
+		};
+		return new vscode.Task(definition, vscode.TaskScope.Workspace, `bf: run: current file`, CustomExecutionTaskProvider.type,
+			new vscode.CustomExecution(async () => {
+				return new CustomBuildTaskTerminal(definition.file);
+			})
+		);
+	}
+
+	resolveTask(_task: vscode.Task, token?: vscode.CancellationToken): vscode.ProviderResult<vscode.Task> {
+		const definition: BFRunTaskDefinition = <any>_task.definition;
+
+		const fileNameRecovered = definition.file;
+		const taskName = `bf: run: ` + (fileNameRecovered ?? 'current file');
+		return new vscode.Task(definition, vscode.TaskScope.Workspace, taskName, CustomExecutionTaskProvider.type,
+			new vscode.CustomExecution(async () => {
+				return new CustomBuildTaskTerminal(definition.file);
+			})
+		);
+	}
+
+}
+
+function replaceLFWithCRLF(data: string) {
+	return data.replace(/(?<!\r)\n/gm, '\r\n');
+}
+
+
+class CustomBuildTaskTerminal implements vscode.Pseudoterminal {
+	private writeEmitter = new vscode.EventEmitter<string>();
+	private closeEmitter = new vscode.EventEmitter<number>();
+
+	private readEmitter = new vscode.EventEmitter<void>();
+	inputQueue: number[] = [];
+
+	private openDocument: vscode.TextDocument | undefined;
+	onDidWrite: vscode.Event<string> = this.writeEmitter.event;
+	onDidClose?: vscode.Event<number> = this.closeEmitter.event;
+	abortRequestor = new AbortClassRequestor();
+
+	handleInput(data: string): void {
+		// this.writeEmitter.fire(`Echo(${data.length})` + data);
+		const newData = [...data].map(e => e.charCodeAt(0));
+		console.log('new input', newData);
+		this.inputQueue.push(...newData);
+		this.writeEmitter.fire(replaceLFWithCRLF(data));
+		this.readEmitter.fire();
+	}
+
+
+	constructor(private fileName?: string) {
+	}
+
+	open(_initialDimensions: vscode.TerminalDimensions | undefined): void {
+		// At this point we can start using the terminal.
+		this.openDocumentForTask().then(this.doExecution.bind(this));
+	}
+
+	getPath(fileLocationString: string | undefined, fileName: string) {
+		if (fileLocationString === undefined) { return vscode.Uri.file(fileName); }
+		return vscode.Uri.file(path.resolve(fileLocationString, fileName));
+	}
+
+	private async openDocumentForTask() {
+		let openDocument: vscode.TextDocument;
+		if (this.fileName !== undefined) {
+			try {
+				const fileLocationPathString = vscode.workspace.workspaceFolders?.[0]?.uri?.fsPath;
+				const finalPath = this.getPath(fileLocationPathString, this.fileName);
+				openDocument = await vscode.workspace.openTextDocument(finalPath);
+			} catch (e) {
+				vscode.window.showErrorMessage('Failed to open file ' + this.fileName);
+				this.closeEmitter.fire(2);
+			}
+		} else {
+			openDocument = vscode.window.activeTextEditor.document;
+		}
+		this.openDocument = openDocument;
+	}
+
+	close(): void {
+		// The terminal has been closed. Shutdown the build.
+		console.log('Forced close');
+		this.abortRequestor.requestAbort();
+	}
+
+	private async doExecution(): Promise<void> {
+		this.writeEmitter.fire('[bf] Requested execution of ' + (this.fileName ?? 'active file') + '\r\n');
+		const cus = this;
+		try {
+
+			await BranFlakesExecutorVisitor.run(this.openDocument.getText(),
+				this.openDocument.uri.fsPath,
+				{
+					getInput() {
+						return new Promise((res, rej) => {
+							if (cus.inputQueue.length > 0) {
+								const char = cus.inputQueue.shift();
+								res(char);
+							} else {
+								const dispose: vscode.Disposable[] = [];
+								cus.readEmitter.event(e => {
+									const char = cus.inputQueue.shift();
+									//clear the earliest disposable
+									dispose.shift()?.dispose();
+									res(char);
+								}, null, dispose);
+
+							}
+						});
+					},
+				},
+				async (data) => {
+					this.writeEmitter.fire(replaceLFWithCRLF(data));
+				},this.abortRequestor
+			);
+			this.closeEmitter.fire(0);
+		} catch (e) {
+			this.closeEmitter.fire(1);
+		}
+
+
+	}
+}

client/webpack.config.js

@@ -16,7 +16,8 @@ const config = {
 		path: path.resolve(__dirname, 'dist'),
 		filename: '[name].js',
 		libraryTarget: 'commonjs2',
-		devtoolModuleFilenameTemplate: '../[resource-path]'
+		sourceMapFilename: '[name].js.map',
+		devtoolModuleFilenameTemplate: '../[resource-path]',
 	},
 	// devtool: 'source-map',
 	externals: {
@@ -27,6 +28,7 @@ const config = {
 		innerGraph:true,
 		usedExports:true
 	},
+	
 	resolve: {
 		// support reading TypeScript and JavaScript files, 📖 -> https://github.com/TypeStrong/ts-loader
 		extensions: ['.ts', '.js'],

package.json

@@ -5,9 +5,9 @@
 	"author": "Atreya Bain",
 	"license": "MIT",
 	"publisher": "atreyabain",
-	"version": "0.0.4",
+	"version": "0.3.1",
 	"icon": "assets/128.png",
-	"categories": [],
+	"categories": ["Programming Languages","Linters"],
 	"keywords": [
 		"multi-root ready",
 		"brainfuck",
@@ -29,7 +29,7 @@
 		"type": "git",
 		"url": "https://github.com/chrisvrose/bf-server"
 	},
-	"main": "./client/dist/extension",
+	"main": "./client/dist/extension.js",
 	"contributes": {
 		"languages": [
 			{
@@ -57,7 +57,7 @@
 		],
 		"commands": [
 			{
-				"command": "bf.execute",
+				"command": "bf.execute.old",
 				"title": "BF: Execute",
 				"when": "editorLangId == bf",
 				"enablement": "editorLangId == bf"
@@ -85,7 +85,18 @@
 					"description": "Traces the communication between VS Code and the language server."
 				}
 			}
-		}
+		},
+		"taskDefinitions": [
+			{
+				"type": "bf-run",
+				"properties": {
+					"file":{
+						"type":"string",
+						"description": "The BF file to be executed. Can be omitted to run current file"
+					}
+				}
+			}
+		]
 	},
 	"scripts": {
 		"vscode:prepublish": "npm run compile",

server/src/connection.ts

@@ -0,0 +1,128 @@
+import { CompletionItem, CompletionItemKind, Connection, DidChangeConfigurationNotification, DidChangeConfigurationParams, InitializeParams, InitializeResult, TextDocumentPositionParams, TextDocuments, TextDocumentSyncKind } from 'vscode-languageserver';
+import { validateTextDocument } from './validation';
+import { TextDocument } from 'vscode-languageserver-textdocument';
+import { BranFlakesSettings, defaultSettings, SettingsManager } from './settings';
+
+export class BranFlakesConnectionManager {
+	
+
+	constructor(protected connection: Connection, private validator:typeof validateTextDocument, private documents:TextDocuments<TextDocument>, private settingsManager:SettingsManager) {
+		connection.onInitialize(this.initConnection.bind(this));
+		connection.onDidChangeConfiguration(this.onDidChangeConfiguration.bind(this));
+	}
+
+
+
+	initConnection(params: InitializeParams) {
+		let capabilities = params.capabilities;
+
+		// Does the client support the `workspace/configuration` request?
+		// If not, we will fall back using global settings
+		this.settingsManager.hasConfigurationCapability = !!(
+			capabilities.workspace && !!capabilities.workspace.configuration
+		);
+		this.settingsManager.hasWorkspaceFolderCapability = !!(
+			capabilities.workspace && !!capabilities.workspace.workspaceFolders
+		);
+		this.settingsManager.hasDiagnosticRelatedInformationCapability = !!(
+			capabilities.textDocument &&
+			capabilities.textDocument.publishDiagnostics &&
+			capabilities.textDocument.publishDiagnostics.relatedInformation
+		);
+
+		const result: InitializeResult = {
+			capabilities: {
+				textDocumentSync: TextDocumentSyncKind.Incremental,
+				// Tell the client that the server supports code completion
+				completionProvider: {
+					resolveProvider: false,
+					triggerCharacters: ['.'],
+				},
+			},
+		};
+		if (this.settingsManager.hasWorkspaceFolderCapability) {
+			result.capabilities.workspace = {
+				workspaceFolders: {
+					supported: true,
+				},
+			};
+		}
+		return result;
+	}
+
+	onDidChangeConfiguration(change:DidChangeConfigurationParams){
+		if (this.settingsManager.hasConfigurationCapability) {
+			// Reset all cached document settings
+			this.settingsManager.clearDocumentSettings();
+		} else {
+			this.settingsManager.updateSettings(
+				(change.settings.languageServerExample || defaultSettings)
+			);
+		}
+		
+		// Revalidate all open text documents
+		Promise.all(this.documents.all().map(validateTextDocument)).catch(e => {
+			this.connection.console.log('Failed to validate text documents');
+		});
+	}
+	onInit() {
+		if (this.settingsManager.hasConfigurationCapability) {
+			// Register for all configuration changes.
+			this.connection.client.register(
+				DidChangeConfigurationNotification.type,
+				undefined
+			);
+		}
+		if (this.settingsManager.hasWorkspaceFolderCapability) {
+			this.connection.workspace.onDidChangeWorkspaceFolders(_event => {
+				// connection.console.log('Workspace folder change event received.');
+			});
+		}
+	}
+
+	setOnCompletion() {
+		this.connection.onCompletion((_textDocumentPosition: TextDocumentPositionParams): CompletionItem[] => {
+			const completions: CompletionItem[] = [
+				{
+					label: '+',
+					detail: 'Addition',
+					documentation: 'Add one to cell',
+				},
+				{
+					label: '-',
+					detail: 'Subtraction',
+					documentation: 'Subtract one from cell',
+				},
+				{
+					label: ',',
+					detail: 'Input',
+					documentation: 'Ask for input (Stored in the ASCII format)',
+				},
+				{
+					label: '.',
+					detail: 'Output',
+					documentation: 'Output the equivalent ASCII character',
+				},
+				{
+					label: '>',
+					detail: 'Right Shift',
+					documentation: 'Shift the pointer one cell to the right',
+				},
+				{
+					label: '<',
+					detail: 'Left Shift',
+					documentation: 'Shift the pointer one cell to the Left',
+				},
+			];
+			return completions.map(e => {
+				e.kind = CompletionItemKind.Operator;
+				return e;
+			});
+		});
+	}
+
+	listen() {
+		this.connection.listen();
+	}
+
+}

server/src/server.ts

@@ -5,119 +5,33 @@
 import {
 	createConnection,
 	TextDocuments,
-	Diagnostic,
-	DiagnosticSeverity,
 	ProposedFeatures,
-	InitializeParams,
-	DidChangeConfigurationNotification,
-	CompletionItem,
-	CompletionItemKind,
-	TextDocumentPositionParams,
-	TextDocumentSyncKind,
-	InitializeResult,
-	Position,
 } from 'vscode-languageserver';
 
-// import * as path from 'path';
-
 import { TextDocument } from 'vscode-languageserver-textdocument';
-// import { getTree } from './bfGrammar';
+import { BranFlakesSettings, defaultSettings, SettingsManager } from './settings';
+import { BranFlakesConnectionManager } from './connection';
+import { validateTextDocument } from './validation';
 
 // Create a connection for the server. The connection uses Node's IPC as a transport.
 // Also include all preview / proposed LSP features.
-let connection = createConnection(ProposedFeatures.all);
-
+export let connection = createConnection(ProposedFeatures.all);
 
 // Create a simple text document manager. The text document manager
 // supports full document sync only
 let documents: TextDocuments<TextDocument> = new TextDocuments(TextDocument);
 
-let hasConfigurationCapability: boolean = false;
-let hasWorkspaceFolderCapability: boolean = false;
-let hasDiagnosticRelatedInformationCapability: boolean = false;
 
-connection.onInitialize((params: InitializeParams) => {
-	let capabilities = params.capabilities;
-
-	// Does the client support the `workspace/configuration` request?
-	// If not, we will fall back using global settings
-	hasConfigurationCapability = !!(
-		capabilities.workspace && !!capabilities.workspace.configuration
-	);
-	hasWorkspaceFolderCapability = !!(
-		capabilities.workspace && !!capabilities.workspace.workspaceFolders
-	);
-	hasDiagnosticRelatedInformationCapability = !!(
-		capabilities.textDocument &&
-		capabilities.textDocument.publishDiagnostics &&
-		capabilities.textDocument.publishDiagnostics.relatedInformation
-	);
-
-	const result: InitializeResult = {
-		capabilities: {
-			textDocumentSync: TextDocumentSyncKind.Incremental,
-			// Tell the client that the server supports code completion
-			completionProvider: {
-				resolveProvider: false,
-				triggerCharacters: ['.'],
-			},
-		},
-	};
-	if (hasWorkspaceFolderCapability) {
-		result.capabilities.workspace = {
-			workspaceFolders: {
-				supported: true,
-			},
-		};
-	}
-	return result;
-});
-
-connection.onInitialized(() => {
-	if (hasConfigurationCapability) {
-		// Register for all configuration changes.
-		connection.client.register(
-			DidChangeConfigurationNotification.type,
-			undefined
-		);
-	}
-	if (hasWorkspaceFolderCapability) {
-		connection.workspace.onDidChangeWorkspaceFolders(_event => {
-			connection.console.log('Workspace folder change event received.');
-		});
-	}
-});
-
-// The example settings
-interface ExampleSettings {
-	maxNumberOfProblems: number;
-}
-
-// The global settings, used when the `workspace/configuration` request is not supported by the client.
-// Please note that this is not the case when using this server with the client provided in this example
-// but could happen with other clients.
-const defaultSettings: ExampleSettings = { maxNumberOfProblems: 5 };
-let globalSettings: ExampleSettings = defaultSettings;
+let globalSettings: BranFlakesSettings = defaultSettings;
 
 // Cache the settings of all open documents
-let documentSettings: Map<string, Thenable<ExampleSettings>> = new Map();
+let documentSettings: Map<string, Thenable<BranFlakesSettings>> = new Map();
+let settingsManager = new SettingsManager();
+let cm = new BranFlakesConnectionManager(connection, validateTextDocument,documents,settingsManager);
 
-connection.onDidChangeConfiguration(change => {
-	if (hasConfigurationCapability) {
-		// Reset all cached document settings
-		documentSettings.clear();
-	} else {
-		globalSettings = <ExampleSettings>(
-			(change.settings.languageServerExample || defaultSettings)
-		);
-	}
 
-	// Revalidate all open text documents
-	documents.all().forEach(validateTextDocument);
-});
-
-function getDocumentSettings(resource: string): Thenable<ExampleSettings> {
-	if (!hasConfigurationCapability) {
+export function getDocumentSettings(resource: string): Thenable<BranFlakesSettings> {
+	if (!settingsManager.hasConfigurationCapability) {
 		return Promise.resolve(globalSettings);
 	}
 	let result = documentSettings.get(resource);
@@ -133,13 +47,12 @@ function getDocumentSettings(resource: string): Thenable<ExampleSettings> {
 
 // Only keep settings for open documents
 documents.onDidClose(e => {
-	documentSettings.delete(e.document.uri);
+	settingsManager.closeDocument(e.document.uri);
 });
 
 // The content of a text document has changed. This event is emitted
 // when the text document first opened or when its content has changed.
 documents.onDidChangeContent(change => {
-	//change.contentChanges;
 	validateTextDocument(change.document);
 });
 
@@ -148,112 +61,12 @@ documents.onDidSave(change => {
 	validateTextDocument(change.document);
 });
 
-const validateBrackets = (text: string) => {
-	let count = 0, lp: number[] = [],issues:number[]=[];
-	const textsplit = text.split('');
-	textsplit.forEach((x, i) => {
-		if (x === '[' || x === ']') {
-			
-			if (x === '[') {lp.push(i);}
-			if (x === ']') {if(lp.length===0) {issues.push(i);}lp.pop();}
-
-			
-		}
-
-	});
-
-	return [...lp,...issues];
-};
-
-async function validateTextDocument(textDocument: TextDocument): Promise<void> {
-	// In this simple example we get the settings for every validate run.
-	let settings = await getDocumentSettings(textDocument.uri);
-	// The validator creates diagnostics for all uppercase words length 2 and more
-	const text = textDocument.getText();
-
-	let problems = 0;
-	let diagnostics: Diagnostic[] = [];
-	const issues = validateBrackets(text);
-	
-	diagnostics.push(...issues.map<Diagnostic>(e => ({
-		message: 'Brackets unmatched',
-		range:{
-			start: textDocument.positionAt(e),
-			end: textDocument.positionAt(e+1),
-		},
-		severity:DiagnosticSeverity.Error,
-		code:'[ and ]',
-	})));
-	
-	// diagnostics.push({
-	// 	message: 'Brackets not matched',
-	// 	range: {
-	// 		start: { line: 0, character: 0 },
-	// 		end: { line: 0, character: 0 },
-	// 	},
-	// });
-
-	// diagnostics.push(<Diagnostic>{
-	// 	severity: DiagnosticSeverity.Information,
-	// 	range: {
-	// 		start: textDocument.positionAt(0),
-	// 		end: textDocument.positionAt(1),
-	// 	},
-	// 	// message:`HI:(${text})(${result.hasErrors()},${result.hasWarnings()})`,
-	// 	message: `Parsing Failed`,
-	// 	source: 'test',
-	// });
-
-	// Send the computed diagnostics to VSCode.
-	connection.sendDiagnostics({ uri: textDocument.uri, diagnostics });
-}
-
 // This handler provides the initial list of the completion items.
-connection.onCompletion(
-	(_textDocumentPosition: TextDocumentPositionParams): CompletionItem[] => {
-		const completions: CompletionItem[] = [
-			{
-				label: '+',
-				detail: 'Addition',
-				documentation: 'Add one to cell',
-			},
-			{
-				label: '-',
-				detail: 'Subtraction',
-				documentation: 'Subtract one from cell',
-			},
-			{
-				label: ',',
-				detail: 'Input',
-				documentation: 'Ask for input (Stored in the ASCII format)',
-			},
-			{
-				label: '.',
-				detail: 'Output',
-				documentation: 'Output the equivalent ASCII character',
-			},
-			{
-				label: '>',
-				detail: 'Right Shift',
-				documentation: 'Shift the pointer one cell to the right',
-			},
-			{
-				label: '<',
-				detail: 'Left Shift',
-				documentation: 'Shift the pointer one cell to the Left',
-			},
-		];
-		return completions.map(e => {
-			e.kind = CompletionItemKind.Operator;
-			return e;
-		});
-	}
-);
-
+cm.setOnCompletion();
 
 // Make the text document manager listen on the connection
 // for open, change and close text document events
 documents.listen(connection);
 
 // Listen on the connection
-connection.listen();
+cm.listen();

server/src/settings.ts

@@ -0,0 +1,35 @@
+// The example settings
+export interface BranFlakesSettings {
+	maxNumberOfProblems: number;
+}
+
+
+// The global settings, used when the `workspace/configuration` request is not supported by the client.
+// Please note that this is not the case when using this server with the client provided in this example
+// but could happen with other clients.
+export const defaultSettings: BranFlakesSettings = {
+	maxNumberOfProblems: 5
+};
+
+
+export class SettingsManager {
+	hasConfigurationCapability: boolean = false;
+	hasWorkspaceFolderCapability: boolean = false;
+	hasDiagnosticRelatedInformationCapability: boolean = false;
+
+	documentSettings: Map<string, Thenable<BranFlakesSettings>> = new Map();
+
+	#settings = defaultSettings;
+
+	updateSettings(newSettings: BranFlakesSettings) {
+		this.#settings = newSettings;
+	}
+
+	closeDocument(doc: string) {
+		this.documentSettings.delete(doc);
+
+	}
+	clearDocumentSettings(){
+		this.documentSettings.clear();
+	}
+}

server/src/validation.ts

@@ -0,0 +1,54 @@
+import { Diagnostic, DiagnosticSeverity } from 'vscode-languageserver';
+import { TextDocument } from 'vscode-languageserver-textdocument';
+import { getDocumentSettings, connection } from './server';
+
+
+
+export const validateBrackets = (text: string) => {
+	let count = 0, lp: number[] = [], issues: number[] = [];
+	const textsplit = text.split('');
+	textsplit.forEach((x, i) => {
+		if (x === '[' || x === ']') {
+			if (x === '[') {
+				lp.push(i);
+			}
+			if (x === ']') {
+				if (lp.length === 0) {
+					issues.push(i);
+				}
+				lp.pop();
+			}
+		}
+	});
+
+	return [...lp, ...issues];
+};
+
+
+
+export async function validateTextDocument(textDocument: TextDocument): Promise<void> {
+	// In this simple example we get the settings for every validate run.
+	let settings = await getDocumentSettings(textDocument.uri);
+	// The validator creates diagnostics for all uppercase words length 2 and more
+	const text = textDocument.getText();
+
+	let problems = 0;
+	let diagnostics: Diagnostic[] = [];
+	const issues = validateBrackets(text);
+
+	diagnostics.push(
+		...issues.map<Diagnostic>(e => ({
+			message: 'Brackets unmatched',
+			range: {
+				start: textDocument.positionAt(e),
+				end: textDocument.positionAt(e + 1),
+			},
+			severity: DiagnosticSeverity.Error,
+			code: '[ and ]',
+		}))
+	);
+
+	// Send the computed diagnostics to VSCode.
+	connection.sendDiagnostics({ uri: textDocument.uri, diagnostics });
+}
+

tsconfig.json

@@ -5,7 +5,8 @@
 		"lib": ["ES2019"],
 		"outDir": "out",
 		"rootDir": "src",
-		"sourceMap": true
+		"sourceMap": true,
+		"strict": true
 	},
 	"include": [
 		"src"