예제 #1
0
        /// <summary>
        /// 分析标签
        /// </summary>
        /// <param name="parser">TemplateParser</param>
        /// <param name="tc">Token集合</param>
        /// <returns></returns>
        public Tag Parse(TemplateParser parser, TokenCollection tc)
        {
            if (tc != null &&
                parser != null &&
                tc.Count > 3 &&
                Common.Utility.IsEqual(Field.KEY_FOR, tc.First.Text))
            {
                if (tc[1].TokenKind == TokenKind.LeftParentheses &&
                    tc.Last.TokenKind == TokenKind.RightParentheses)
                {
                    Int32 pos   = 0,
                          start = 2,
                          end;

                    List <Tag> ts = new List <Tag>(3);

                    ForTag tag = new ForTag();
                    for (Int32 i = 2; i < tc.Count - 1; i++)
                    {
                        end = i;
                        if (tc[i].TokenKind == TokenKind.Punctuation && tc[i].Text == ";")
                        {
                            if (pos == 0)
                            {
                                TokenCollection coll = new TokenCollection();
                                coll.Add(tc, start, end - 1);
                                if (coll.Count > 0)
                                {
                                    ts.Add(parser.Read(coll));
                                }
                                else
                                {
                                    ts.Add(null);
                                }
                                start = i + 1;
                                continue;
                            }
                        }

                        if (tc[i].TokenKind == TokenKind.LeftParentheses)
                        {
                            pos++;
                        }
                        else if (tc[i].TokenKind == TokenKind.RightParentheses)
                        {
                            pos--;
                        }
                        if (i == tc.Count - 2)
                        {
                            TokenCollection coll = new TokenCollection();
                            coll.Add(tc, start, end);
                            if (coll.Count > 0)
                            {
                                ts.Add(parser.Read(coll));
                            }
                            else
                            {
                                ts.Add(null);
                            }
                        }
                    }

                    if (ts.Count != 3)
                    {
                        throw new Exception.ParseException(String.Concat("syntax error near for:", tc), tc.First.BeginLine, tc.First.BeginColumn);
                    }

                    tag.Initial = ts[0];
                    tag.Test    = ts[1];
                    tag.Do      = ts[2];

                    while (parser.MoveNext())
                    {
                        tag.Children.Add(parser.Current);
                        if (parser.Current is EndTag)
                        {
                            return(tag);
                        }
                    }

                    throw new Exception.ParseException(String.Concat("for is not properly closed by a end tag:", tc), tc.First.BeginLine, tc.First.BeginColumn);
                }
                else
                {
                    throw new Exception.ParseException(String.Concat("syntax error near for:", tc), tc.First.BeginLine, tc.First.BeginColumn);
                }
            }

            return(null);
        }
예제 #2
0
        /// <summary>
        /// 分析标签
        /// </summary>
        /// <param name="parser">TemplateParser</param>
        /// <param name="tc">Token集合</param>
        /// <returns></returns>
        public Tag Parse(TemplateParser parser, TokenCollection tc)
        {
            if (tc != null &&
                parser != null &&
                tc.First.TokenKind == TokenKind.TextData &&
                tc.Count > 2 &&
                (tc[1].TokenKind == TokenKind.LeftParentheses) &&
                tc.Last.TokenKind == TokenKind.RightParentheses)
            {
                FunctaionTag tag = new FunctaionTag();

                tag.Name = tc.First.Text;

                Int32 pos   = 0,
                      start = 2,
                      end;

                for (Int32 i = 2; i < tc.Count; i++)
                {
                    end = i;
                    switch (tc[i].TokenKind)
                    {
                    case TokenKind.Comma:
                        if (pos == 0)
                        {
                            TokenCollection coll = new TokenCollection();
                            coll.Add(tc, start, end - 1);
                            if (coll.Count > 0)
                            {
                                tag.AddChild(parser.Read(coll));
                            }
                            start = i + 1;
                        }
                        break;

                    default:
                        if (tc[i].TokenKind == TokenKind.LeftParentheses)
                        {
                            pos++;
                        }
                        else if (tc[i].TokenKind == TokenKind.RightParentheses)
                        {
                            pos--;
                        }
                        if (i == tc.Count - 1)
                        {
                            TokenCollection coll = new TokenCollection();
                            coll.Add(tc, start, end - 1);
                            if (coll.Count > 0)
                            {
                                tag.AddChild(parser.Read(coll));
                            }
                        }
                        break;
                    }
                }

                return(tag);
            }

            return(null);
        }