public static Instruction Parse(String parseFrom)
{
var r = new Instruction();
var annotationPoint = parseFrom.IndexOf('#');
if (annotationPoint >= 0)
{
r.Annotation = parseFrom.Substring(annotationPoint + 1);
parseFrom = parseFrom.Substring(0, annotationPoint);
}
var parts = parseFrom.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
r.Opcode = (Enum.Parse(typeof(InstructionSet), parts[0]) as InstructionSet?).Value;
r.FirstOperand = r.SecondOperand = r.ThirdOperand = Operand.NONE;
if (parts.Length >= 2) r.FirstOperand = (Enum.Parse(typeof(Operand), parts[1]) as Operand?).Value;
if (parts.Length >= 3) r.SecondOperand = (Enum.Parse(typeof(Operand), parts[2]) as Operand?).Value;
if (parts.Length >= 4) r.ThirdOperand = (Enum.Parse(typeof(Operand), parts[3]) as Operand?).Value;
return r;
}
public RuntimeError(string msg, Instruction at)
: base(msg)
{
}
public RuntimeError(ExecutionContext context, string msg, Instruction at)
: base(msg)
{
}
private int CountLiteralOperands(Instruction Instruction)
{
int literals = 0;
if (ExpectLiteral(Instruction.FirstOperand)) ++literals;
if (ExpectLiteral(Instruction.SecondOperand)) ++literals;
if (ExpectLiteral(Instruction.ThirdOperand)) ++literals;
return literals;
}
