Esempio n. 1
0
        /// <summary>
        /// Run a single read-evaluate-print iteration.
        /// </summary>
        void RunIteration()
        {
            // Read user input
            BufferedInput = ReadUserInput();
            if (string.IsNullOrEmpty(BufferedInput))
            {
                return;
            }

            // Compile the module
            var module = WrapIodineOperation(this, () => Iodine.CompileSource(BufferedInput));

            if (module == null)
            {
                return;
            }

            // Invoke the module
            var result = WrapIodineOperation(this, () => Iodine.InvokeModule(module));

            if (result == null)
            {
                return;
            }

            // Pretty print the result
            PrettyPrint.WriteLine(result);
        }
Esempio n. 2
0
        public static void HandleUnhandledIodineException(Shell instance, Iodine.Runtime.UnhandledIodineExceptionException e)
        {
            // Pretty print the underlying Iodine exception
            PrettyPrint.WriteLine(e.OriginalException);

            // Test if the error occurred in an actual module
            if (e.Frame.Module.Name != "__anonymous__")
            {
                // Print the stack trace
                e.PrintStack();
            }
        }
Esempio n. 3
0
        /// <summary>
        /// Initializes a new instance of the <see cref="T:iox.Shell"/> class.
        /// </summary>
        public Shell(Configuration conf)
        {
            Conf = conf;

            // Get assembly version
            AssemblyVersion = ReflectionHelper.GetVersion();

            // Define builtin exit function
            var iodineHookExit = new BuiltinMethodCallback((vm, self, arguments) => {
                shouldExit = true;
                return(IodineNull.Instance);
            }, null);

            iodineHookExit.SetAttribute("__doc__", new IodineString("Exits the iox REPL shell."));

            // Define builtin help function
            var iodineHookHelp = new BuiltinMethodCallback((vm, self, arguments) => {
                // Test argument count
                if (arguments.Length == 0)
                {
                    ANSI.WriteLine("Please pass an object to the help function!");
                    return(IodineNull.Instance);
                }

                // Get the target object
                var target = arguments [0];

                // Test __doc__ attribute existence
                if (!target.HasAttribute("__doc__"))
                {
                    ANSI.WriteLine($"The specified {White}{target.TypeDef.Name}{Default} does not provide any documentation :(");
                    return(IodineNull.Instance);
                }

                // Get attribute
                var attr = target.GetAttribute(vm, "__doc__");

                // Get documentation
                var doc = (
                    attr as IodineString ??
                    (attr as IodineProperty)?.Get(vm) as IodineString ??
                    (attr as InternalIodineProperty)?.Get(vm) as IodineString
                    );

                // Write documentation
                if (doc != null)
                {
                    PrettyPrint.WriteLine(doc);
                }

                return(IodineNull.Instance);
            }, null);

            iodineHookHelp.SetAttribute("__doc__", new IodineString("Prints the documentation for the specified object."));

            // Setup Iodine context
            Iodine = new IodineContext();
            Iodine.ExposeGlobal("exit", iodineHookExit);
            Iodine.ExposeGlobal("help", iodineHookHelp);
            Iodine.AddSearchPaths("./iodine/modules");
            if (Environment.GetEnvironmentVariable("IODINE_MODULES") != null)
            {
                Iodine.AddSearchPaths(Environment.GetEnvironmentVariable("IODINE_MODULES"));
            }
            if (Environment.GetEnvironmentVariable("IODINE_HOME") != null)
            {
                Iodine.AddSearchPaths(Path.Combine(Environment.GetEnvironmentVariable("IODINE_HOME"), "modules"));
            }

            // Set prompt
            Prompt = new Prompt("λ");
            if (Conf.UsePowerlines)
            {
                Prompt = new Prompt(Powerline().Segment($"IoX {AssemblyVersion.ToString (2)} ", fg: DarkCyan, bg: White).ToAnsiString());
            }

            // Set hinter
            Hinter = new HinterWrapper(this);
        }