public Tag Parse(TemplateParser parser, TokenCollection tc)
{
if (tc.Count > 2 && HasOperator(tc))
{
Int32 start, end, pos;
start = end = pos = 0;
#region 去括号
//(8+2) ==》 8+2
//(8+2) * (10-5) ==》(8+2) * (10-5)
if (tc.First.TokenKind == TokenKind.LeftParentheses && tc.Last.TokenKind == TokenKind.RightParentheses)
{
for (Int32 i = 1; i < tc.Count - 1; i++)
{
switch (tc[i].TokenKind)
{
case TokenKind.LeftParentheses:
pos++;
break;
case TokenKind.RightParentheses:
if (pos > 0)
{
pos--;
}
break;
}
}
if (pos == 0)
{
tc = new TokenCollection(tc, 1, tc.Count - 2);
}
else
{
pos = 0;
}
}
#endregion
ExpressionTag tag = new ExpressionTag();
#region 执行表达式折分
for (Int32 i = 0; i < tc.Count; i++)
{
end = i;
switch (tc[i].TokenKind)
{
case TokenKind.Operator:
if (pos == 0)
{
if (start != end)
{
TokenCollection coll = new TokenCollection();
coll.Add(tc, start, end - 1);
tag.AddChild(parser.Read(coll));
}
tag.AddChild(new TextTag());
tag.Children[tag.Children.Count - 1].FirstToken = tc[i];
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();
if (tc[start].TokenKind == TokenKind.RightParentheses)
{
coll.Add(tc, start + 1, end - 1);
}
else
{
coll.Add(tc, start, end);
}
start = i + 1;
if (coll.Count > 0)
{
tag.AddChild(parser.Read(coll));
}
}
break;
}
}
#endregion
if (tag.Children.Count > 0)
{
if (tag.Children.Count == 1)
{
return tag.Children[0];
}
return tag;
}
}
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(JinianNet.JNTemplate.Parser.TemplateParser parser, TokenCollection tc)
{
if (tc != null
&& parser != null
&& tc.Count > 2)
{
Int32 start, end, pos;
start = end = pos = 0;
Boolean isFunc = false;
List<Token> data = new List<Token>();
Queue<TokenCollection> queue = new Queue<TokenCollection>();
for (Int32 i = 0; i < tc.Count; i++)
{
end = i;
if (tc[i].TokenKind == TokenKind.LeftParentheses)
{
if (pos == 0)
{
if (i > 0 && tc[i - 1].TokenKind == TokenKind.TextData)
{
isFunc = true;
}
}
pos++;
}
else if (tc[i].TokenKind == TokenKind.RightParentheses)
{
if (pos > 0)
{
pos--;
}
else
{
throw new Exception.ParseException(String.Concat("syntax error near ):", tc), data[i].BeginLine, data[i].BeginColumn);
}
if (pos == 0)
{
TokenCollection coll = new TokenCollection();
if (!isFunc)
{
coll.Add(tc, start + 1, end - 1);
}
else
{
coll.Add(tc, start, end);
}
queue.Enqueue(coll);
data.Add(null);
start = i + 1;
//tag.AddChild(parser.Read(coll));
}
}
else if (pos == 0 && (tc[i].TokenKind == TokenKind.Dot || tc[i].TokenKind == TokenKind.Operator))
{
if (end > start)
{
TokenCollection coll = new TokenCollection();
coll.Add(tc, start, end - 1);
queue.Enqueue(coll);
data.Add(null);
}
start = i + 1;
data.Add(tc[i]);
}
if (i == tc.Count - 1 && end >= start)
{
if (start == 0 && end == i)
{
throw new Exception.ParseException(String.Concat("Unexpected tag:", tc), tc[0].BeginLine, tc[0].BeginColumn);
}
TokenCollection coll = new TokenCollection();
coll.Add(tc, start, end);
queue.Enqueue(coll);
data.Add(null);
start = i + 1;
}
}
List<Tag> tags = new List<Tag>();
for (Int32 i = 0; i < data.Count; i++)
{
if (data[i] == null)
{
tags.Add(parser.Read(queue.Dequeue()));
}
else if (data[i].TokenKind == TokenKind.Dot)
{
if (tags.Count == 0 || i == data.Count - 1 || data[i + 1] != null)
{
throw new Exception.ParseException(String.Concat("syntax error near .:", tc), data[i].BeginLine, data[i].BeginColumn);
}
if (tags[tags.Count - 1] is ReferenceTag)
{
tags[tags.Count - 1].AddChild(parser.Read(queue.Dequeue()));
}
else
{
ReferenceTag t = new ReferenceTag();
t.AddChild(tags[tags.Count - 1]);
t.AddChild(parser.Read(queue.Dequeue()));
tags[tags.Count - 1] = t;
}
i++;
}
else if (data[i].TokenKind == TokenKind.Operator)
{
tags.Add(new TextTag());
tags[tags.Count - 1].FirstToken = data[i];
}
}
if (tags.Count == 1)
{
return tags[0];
}
if (tags.Count > 1)
{
ExpressionTag t = new ExpressionTag();
for (Int32 i = 0; i < tags.Count; i++)
{
t.AddChild(tags[i]);
}
tags.Clear();
return t;
}
}
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)
{
return null;
}
//支持写法：简写格式：
//常规格式：
if (tc.Count > 5
&& Common.ParserHelpers.IsEqual(tc.First.Text, Field.KEY_SET)
&& tc[1].TokenKind == TokenKind.LeftParentheses
&& tc[3].Text == "="
&& tc.Last.TokenKind == TokenKind.RightParentheses)
{
SetTag tag = new SetTag();
tag.Name = tc[2].Text;
TokenCollection coll = new TokenCollection();
coll.Add(tc, 4, tc.Count - 2);
tag.Value = parser.Read(coll);
return tag;
}
if (tc.Count == 2
&& tc.First.TokenKind == TokenKind.TextData
&& tc.Last.TokenKind == TokenKind.Operator
&& (tc.Last.Text == "++" || tc.Last.Text == "--"))
{
SetTag tag = new SetTag();
tag.Name = tc.First.Text;
ExpressionTag c = new ExpressionTag();
c.AddChild(new VariableTag()
{
FirstToken = tc.First,
Name = tc.First.Text
});
c.AddChild(new TextTag()
{
FirstToken = new Token(TokenKind.Operator, tc.Last.Text[0].ToString())
});
c.AddChild(new NumberTag()
{
Value = 1,
FirstToken = new Token(TokenKind.Number, "1")
});
tag.Value = c;
return tag;
}
if (tc.Count > 2
&& tc.First.TokenKind == TokenKind.TextData
&& tc[1].Text == "=")
{
SetTag tag = new SetTag();
tag.Name = tc.First.Text;
TokenCollection coll = new TokenCollection();
coll.Add(tc, 2, tc.Count - 1);
tag.Value = parser.Read(coll);
return tag;
}
return null;
}