CSLE.CLS_TokenParser.Parse C# (CSharp) Method

        public IList<Token> Parse(string lines)
        {
            line = 1;
            List<Token> ts = new List<Token>();
            int n = 0;
            while (n >= 0)
            {
                Token t;
                t.line = this.line;

                int nstart = FindStart(lines, n);
                t.line = this.line;
                int nend = GetToken(lines, nstart, out t);
                if (nend >= 0)
                {
                    for (int i = nstart; i < nend; i++)
                    {
                        if (lines[i] == '\n')
                            line++;
                    }
                }
                n = nend;
                if (n >= 0)
                {
                    if (ts.Count >= 2 && t.type == TokenType.IDENTIFIER && ts[ts.Count - 1].text == "." && ts[ts.Count - 2].type == TokenType.TYPE)
                    {
                        string ntype = ts[ts.Count - 2].text + ts[ts.Count - 1].text + t.text;
                        if (types.Contains(ntype))
                        {//类中类，合并之
                            t.type = TokenType.TYPE;
                            t.text = ntype;
                            t.pos = ts[ts.Count - 2].pos;
                            t.line = ts[ts.Count - 2].line;
                            ts.RemoveAt(ts.Count - 1);
                            ts.RemoveAt(ts.Count - 1);

                            ts.Add(t);
                            continue;
                        }
                    }
                    if (ts.Count >= 3 && t.type == TokenType.PUNCTUATION && t.text == ">"
                        && ts[ts.Count - 1].type == TokenType.TYPE
                        && ts[ts.Count - 2].type == TokenType.PUNCTUATION && ts[ts.Count - 2].text == "<"
                        && ts[ts.Count - 3].type == TokenType.IDENTIFIER)
                    {//模板函数调用,合并之
                        string ntype = ts[ts.Count - 3].text + ts[ts.Count - 2].text + ts[ts.Count - 1].text + t.text;
                        t.type = TokenType.IDENTIFIER;
                        t.text = ntype;
                        t.pos = ts[ts.Count - 2].pos;
                        t.line = ts[ts.Count - 2].line;
                        ts.RemoveAt(ts.Count - 1);
                        ts.RemoveAt(ts.Count - 1);
                        ts.RemoveAt(ts.Count - 1);
                        ts.Add(t);
                        continue;
                    }
                    if (ts.Count >= 2 && t.type == TokenType.TYPE && ts[ts.Count - 1].text == "." && (ts[ts.Count - 2].type == TokenType.TYPE || ts[ts.Count - 2].type == TokenType.IDENTIFIER))
                    {//Type.Type IDENTIFIER.Type 均不可能，为重名
                        t.type = TokenType.IDENTIFIER;
                        ts.Add(t);
                        continue;
                    }
                    if (ts.Count >= 1 && t.type == TokenType.TYPE && ts[ts.Count - 1].type == TokenType.TYPE)
                    {//Type Type 不可能，为重名
                        t.type = TokenType.IDENTIFIER;
                        ts.Add(t);
                        continue;
                    }
                    ts.Add(t);
                }
            }
            return ts;
        }