/// <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(tc.First.Text, Field.KEY_IF))
{
if (tc[1].TokenKind == TokenKind.LeftParentheses &&
tc.Last.TokenKind == TokenKind.RightParentheses)
{
IfTag tag = new IfTag();
ElseifTag t = new ElseifTag();
TokenCollection coll = new TokenCollection();
coll.Add(tc, 2, tc.Count - 2);
t.Test = parser.Read(coll);
t.FirstToken = coll.First;
//t.LastToken = coll.Last;
tag.AddChild(t);
while (parser.MoveNext())
{
if (parser.Current is EndTag)
{
tag.AddChild(parser.Current);
return(tag);
}
else if (parser.Current is ElseifTag ||
parser.Current is ElseTag)
{
tag.AddChild(parser.Current);
}
else
{
tag.Children[tag.Children.Count - 1].AddChild(parser.Current);
}
}
throw new Exception.ParseException(String.Concat("if 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 if:", tc), tc.First.BeginLine, tc.First.BeginColumn);
}
}
return(null);
}
/// <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 > 0 &&
Common.Utility.IsEqual(Field.KEY_FOREACH, tc.First.Text))
{
if (tc.Count > 5 &&
tc[1].TokenKind == TokenKind.LeftParentheses &&
tc[2].TokenKind == TokenKind.TextData &&
Common.Utility.IsEqual(tc[3].Text, Field.KEY_IN) &&
tc.Last.TokenKind == TokenKind.RightParentheses)
{
ForeachTag tag = new ForeachTag();
tag.Name = tc[2].Text;
TokenCollection coll = new TokenCollection();
coll.Add(tc, 4, tc.Count - 2);
tag.Source = parser.Read(coll);
while (parser.MoveNext())
{
tag.Children.Add(parser.Current);
if (parser.Current is EndTag)
{
return(tag);
}
}
throw new Exception.ParseException(String.Concat("foreach 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 foreach:", tc), tc.First.BeginLine, tc.First.BeginColumn);
}
}
return(null);
}
/// <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);
}
