static void Loop(Func<State,State> func, State initial)
{
var state = initial;
while (true)
{
state = func(state);
if (state.Exit) break;
}
}
static State Read(State state)
{
if(state.Current.Length == 0)
Console.Write("es:> ");
string read = null;
if (!state.Piped || Console.In.Peek() != -1)
{
read = Console.ReadLine();
}
if(state.Piped && read != null)
Console.WriteLine(read);
state.Read = read;
return state;
}
static State Eval(State state)
{
var str = state.Read;
if(state.Read == null) { state.Exit = true;}
var builder = state.Current;
if (!string.IsNullOrEmpty(str))
{
builder.AppendLine(str);
state.Evaled = null;
return state;
}
var command = builder.ToString();
builder.Clear();
state.Evaled = CommandProcessor.Process(command, state);
return state;
}
static State Print(State state)
{
if(state.Evaled != null)
Console.WriteLine("\n" + state.Evaled);
return state;
}
