public INode Parse(IEnumerable<IToken> tokens)
{
_tokens = tokens.GetEnumerator();
_states = new Stack<ParseState>();
_currentState = new ParseState();
while (_tokens.MoveNext())
{
_currentState.Handle(this);
}
while (_states.Count > 0)
{
EndState();
}
return _currentState.Close();
}
public void ToState(ParseState state)
{
_states.Push(_currentState);
_currentState = state;
}
public void ToState(ParseState state)
{
_states.Push(_currentState);
_currentState = state;
}
public void EndState()
{
var toState = _states.Pop();
toState.AddOperand(_currentState.Close());
_currentState = toState;
}