private void BeginRoutine()
{
if (_posTokens.Count != 2)
{
throw new ApplicationException(); // todo2[ak]
}
if (_currentRoutine != null)
{
throw new ApplicationException(); // todo2[ak]
}
string routineName = ((SymbolToken)_posTokens[1]).Name;
_currentRoutine = new RoutineBuilder(routineName);
this.AdvanceLine();
}
private List<Routine> CompileLines(string[] lines)
{
_lines = lines;
_pos = 0;
_currentRoutine = null;
List<RoutineBuilder> routineBuilders = new List<RoutineBuilder>();
while (true)
{
if (this.IsEnd())
{
break;
}
string line = this.GetCurrentLine();
_posTokens = _tokenizer.Tokenize(line);
if (_posTokens.Count == 0)
{
this.AdvanceLine();
continue;
}
Token first = _posTokens[0];
if (first is SymbolToken)
{
SymbolToken symb = (SymbolToken)first;
if (symb.Name == DECL_ROUTINE)
{
this.BeginRoutine();
}
else
{
if (_currentRoutine == null)
{
throw new ApplicationException(); // todo2[ak]
}
InstructionBuilder ib = this.GetInstructionBuilder(symb.Name);
if (ib == null)
{
if (symb.Name == DECL_END)
{
bool ok =
_posTokens.Count == 2 &&
_posTokens[1] is SymbolToken &&
((SymbolToken)_posTokens[1]).Name == DECL_ROUTINE;
if (ok)
{
// end of routine
_currentRoutine.Finish();
routineBuilders.Add(_currentRoutine);
_currentRoutine = null;
}
else
{
throw new NotImplementedException();
}
}
else
{
// label ?
if (_posTokens.Count == 2 && _posTokens[1] == ColonToken.Value)
{
// label!
_currentRoutine.AddLabel(symb.Name);
}
else
{
throw new NotImplementedException();
}
}
}
else
{
var args = this.ExtractArgs(_posTokens.Skip(1));
//_currentRoutine.AddInstruction(ib, _posTokens.Skip(1).ToArray());
_currentRoutine.AddInstruction(ib, args);
}
this.AdvanceLine();
}
}
else
{
throw new NotImplementedException();
}
}
List<Routine> routines = routineBuilders
.Select(b => b.Build())
.ToList();
return routines;
}