public string[] GetAssembly()
{
var commands = new List <string>();
while (_parser.HasMoreCommands)
{
_parser.Advance();
switch (_parser.CommandType)
{
case CommandType.C_ARITHMETIC:
commands.AddRange(_codeWriter.WriteArithmetic(_parser.Arg1()));
break;
case CommandType.C_PUSH:
case CommandType.C_POP:
commands.AddRange(_codeWriter.WritePushPop(_parser.CommandType, _parser.Arg1(), int.Parse(_parser.Arg2())));
break;
case CommandType.C_LABEL:
commands.AddRange(_codeWriter.WriteLabel(_parser.Arg1()));
break;
case CommandType.C_GOTO:
commands.AddRange(_codeWriter.WriteGoto(_parser.Arg1()));
break;
case CommandType.C_IF:
commands.AddRange(_codeWriter.WriteIf(_parser.Arg1()));
break;
case CommandType.C_FUNCTION:
commands.AddRange(_codeWriter.WriteFunction(_parser.Arg1(), int.Parse(_parser.Arg2())));
break;
case CommandType.C_RETURN:
commands.AddRange(_codeWriter.WriteReturn());
break;
case CommandType.C_CALL:
commands.AddRange(_codeWriter.WriteCall(_parser.Arg1(), int.Parse(_parser.Arg2())));
break;
default:
break;
}
}
return(commands.ToArray());
}
static void Main(string[] args)
{
if (args.Length == 0)
{
Usage();
return;
}
var vmFileName = args[0];
if (!File.Exists(vmFileName))
{
Usage();
return;
}
var parser = new Parser(vmFileName);
var hackFileName = vmFileName.Replace("vm", "asm");
using (var codeWriter = new CodeWriter(hackFileName))
{
while (parser.HasMoreCommands)
{
Console.WriteLine(parser.CurrentCommand());
var command = parser.CurrentCommand();
if (command.CommandType == CommandType.Arithmetic)
{
codeWriter.WriteArithmetic(command);
}
else
{
codeWriter.WritePushPop(command);
}
parser.Advance();
}
}
}
