public override void Read(Tokeniser t, CharacterReader r)
            {
                char c = r.Consume();

                switch (c)
                {
                case '\t':
                case '\n':
                case '\f':
                case ' ':
                    t.Transition(BeforeDoctypeName);
                    break;

                case eof:
                    t.EofError(this);
                    t.CreateDoctypePending();
                    t.doctypePending.forceQuirks = true;
                    t.EmitDoctypePending();
                    t.Transition(Data);
                    break;

                default:
                    t.Error(this);
                    t.Transition(BeforeDoctypeName);
                    break;
                }
            }
            public override void Read(Tokeniser t, CharacterReader r)
            {
                if (r.MatchesLetter())
                {
                    t.CreateDoctypePending();
                    t.Transition(DoctypeName);
                    return;
                }

                char c = r.Consume();

                switch (c)
                {
                case '\t':
                case '\n':
                case '\f':
                case ' ':
                    break;     // ignore whitespace

                case nullChar:
                    t.Error(this);
                    t.doctypePending.name.Append(replacementChar);
                    t.Transition(DoctypeName);
                    break;

                case eof:
                    t.EofError(this);
                    t.CreateDoctypePending();
                    t.doctypePending.forceQuirks = true;
                    t.EmitDoctypePending();
                    t.Transition(Data);
                    break;

                default:
                    t.CreateDoctypePending();
                    t.doctypePending.name.Append(c);
                    t.Transition(DoctypeName);
                    break;
                }
            }