static void Main(string[] args)
{
var options = new SwitchOptions();
if (!CommandLine.ParseArguments(args, options))
return;
try
{
if (String.IsNullOrEmpty(options.outFile))
{
Console.WriteLine("You must supply an outfile.");
return;
}
var source = new System.IO.StreamReader(options.inFile);
var lexed = new LexResult();
var r = Lexer.Lex(source, lexed);
if (r == 0x00)
{
var destination = System.IO.File.Open(options.outFile, System.IO.FileMode.Create);
var writer = new System.IO.BinaryWriter(destination);
r = Assembler.Assemble(lexed, writer);
writer.Flush();
destination.Flush();
writer.Close();
}
Console.WriteLine("Finished with code " + r);
}
/*case "emulate":
{
var source = System.IO.File.Open(options.inFile, System.IO.FileMode.Open);
var emulator = new IN8();
source.Read(emulator.MEM, 0, 0xFFFF);
// Attach devices
var teletypeTerminal = new TT3();
emulator.AttachHardware(teletypeTerminal, 0x04);
while (emulator.STATE_FLAGS == 0x00) emulator.Step();
Console.WriteLine(String.Format("Finished in state {0:X2}", emulator.STATE_FLAGS));
Console.WriteLine(String.Format("{0:X2} {1:X2} {2:X2} {3:X2} {4:X2} {5:X2} {6:X2} {7:X2}",
emulator.A, emulator.B, emulator.C, emulator.D, emulator.E, emulator.H, emulator.L, emulator.O));
Console.WriteLine(String.Format("{0:X4} {1:X4} {2:X8}", emulator.IP, emulator.SP, emulator.CLOCK));
break;
}
}
}*/
catch (Exception e)
{
Console.WriteLine("An error occured.");
Console.WriteLine(e.Message);
Console.WriteLine(e.StackTrace);
}
}
public static byte Lex(System.IO.StreamReader code, LexResult into)
{
var token = "";
byte r;
while (!code.EndOfStream)
{
var c = code.Read();
if (c == '[')
{
r = AddToken(token, into);
token = "";
if (r != 0x00) return r;
while (!code.EndOfStream && c != ']')
{
token += (char)c;
c = code.Read();
}
if (c != ']') return 0x08;
token += ']';
r = AddToken(token, into);
token = "";
if (r != 0x00) return r;
}
else if (c == '.' || c == '\n' || c == '\r')
{
r = AddToken(token, into);
if (r != 0x00) return r;
token = "";
}
else if (c == ';')
{
r = AddToken(token, into);
token = "";
if (r != 0x00) return r;
while (!code.EndOfStream && c != '\n' && c != '\r') c = code.Read();
}
else
token += (char)c;
}
r = AddToken(token, into);
if (r != 0x00) return r;
Console.WriteLine(String.Format("Binary size: {0:X2} bytes.", into.ByteCount));
return 0x00;
}
private static byte AddToken(String token, LexResult into)
{
token = token.Trim();
if (String.IsNullOrEmpty(token)) return 0x00;
if (token[0] == ':')
{
if (into.Labels.ContainsKey(token.Substring(1))) return 0x03;
else into.Labels.Add(token.Substring(1), into.ByteCount);
}
else
{
into.Tokens.Add(token);
if (token[0] == '$') into.ByteCount += 2;
else if (token[0] == '[') into.ByteCount += (ushort)(token.Length - 2);
else into.ByteCount += 1;
}
return 0x00;
}
public static byte Assemble(LexResult lexed, System.IO.BinaryWriter into)
{
var encodingTable = IN8.GetEncodingTable();
foreach (var token in lexed.Tokens)
{
if (token.StartsWith("0X"))
{
byte value = 0;
if (!byte.TryParse(token.Substring(2), System.Globalization.NumberStyles.HexNumber, null, out value))
return 0x02;
into.Write(value);
}
else if (token.StartsWith("$"))
{
if (lexed.Labels.ContainsKey(token.Substring(1)))
{
ushort value = lexed.Labels[token.Substring(1)];
into.Write((byte)(value >> 8));
into.Write((byte)value); //Avoid endian issues.
}
else
return 0x04;
}
else if (token.StartsWith("["))
{
foreach (var c in token.Substring(1, token.Length - 2))
into.Write((byte)c);
}
else if (encodingTable.ContainsKey(token))
into.Write(encodingTable[token]);
else
return 0x05;
}
return 0x00;
}
