public async Task <IEnumerable <IExecutionState> > Prepare(IEnumerable <Yolol.Grammar.AST.Program> programs, string done = ":done")
{
var network = new DefaultValueDeviceNetwork();
return(from program in programs
select new InterpreterState(program, done, network));
}
public async Task RunYolol([Remainder] string input)
{
var code = input.ExtractYololCodeBlock();
if (code == null)
{
await ReplyAsync(@"Failed to parse a yolol program from message - ensure you have enclosed your solution in triple backticks \`\`\`like this\`\`\`");
return;
}
var result = Yolol.Grammar.Parser.ParseProgram(code);
if (!result.IsOk)
{
await ReplyAsync(result.Err.ToString());
return;
}
var network = new DefaultValueDeviceNetwork();
var state = new MachineState(network);
var done = state.GetVariable(":done");
// Run lines until completion indicator is set or execution time limit is exceeded
var limit = 0;
var pc = 0;
while (!done.Value.ToBool() && limit++ < 2000)
{
try
{
// If line if blank, just move to the next line
if (pc >= result.Ok.Lines.Count)
{
pc++;
}
else
{
pc = result.Ok.Lines[pc].Evaluate(pc, state);
}
}
catch (ExecutionException)
{
pc++;
}
// loop around if program counter goes over max
if (pc >= 20)
{
pc = 0;
}
}
// Print out the final machine state
var embed = state.ToEmbed(network, limit, pc + 1).Build();
await ReplyAsync(embed : embed);
}