LanguageService.ts

    format(code: string): string{
        // if the code contains errors, no need to format, because this way of formating the code, will remove some of the code
        // to make things simple, we only allow formatting a valide code
        if(this.validate(code).length > 0)
            return code;
        let formattedCode = "";
        const ast: TodoExpressionsContext = parseAndGetASTRoot(code);
        ast.children.forEach(node => {
            if (node instanceof AddExpressionContext) {
                // if a Add expression : ADD TODO "STRING"
                const todo = node.STRING().text;
                formattedCode += `ADD TODO ${todo}\n`;
            }else if(node instanceof CompleteExpressionContext) {
                // If a Complete expression: COMPLETE TODO "STRING"
                const todoToComplete = node.STRING().text;
                formattedCode += `COMPLETE TODO ${todoToComplete}\n`;
            }
        });
        return formattedCode;
    }