private bool number()
{
/// number = digits+ ('.' digits+)?
string digits = null;
int line = _line;
int position = _position;
while (Numbers.Contains(peek() ?? NotNumber))
{
digits = (digits ?? "") + peek();
if (advance(1))
{
break;
}
}
// floating point part
if (accept("."))
{
digits += ".";
while (Numbers.Contains(peek() ?? NotNumber))
{
digits = (digits ?? "") + peek();
if (advance(1))
{
break;
}
}
}
if (digits != null)
{
Node node;
if (digits.Contains("."))
{
node = new FloatNode(digits, _filename, line, position);
}
else
{
node = new IntegerNode(digits, _filename, line, position);
}
_stack.Push(node);
return(true);
}
return(false);
}
public void integer_immediate(IntegerNode node)
{
Instruction instruction = new Instruction(InstructionOpcode.push, node.Number);
instructions.Add(instruction);
}
