/// <summary>
/// 转换描述文本为表达式数组
/// </summary>
/// <remarks>
/// a: {#$ TrimHTML(%Title%) $#}
/// b: {#$ Repeat(5,%Title%) $#}
/// c: {#$ Length(TrimHTML(%Title%)) $#}
/// d: {#$ Length(TrimHTML(%Title%)) > 3 ? "太长" : "OK" $#}
/// e: {#$ Replace(TrimHTML(%Title%), "电子"," ") $#}
/// f: {#$ ReplaceX(TrimHTML(%Title%), "\w","") $#}
/// </remarks>
public static List<InnerExpression> GetInnerExpressions(string ExpPaper, IResourceDependency Res)
{
//OleDbHelper.AppendToFile("~/debug.txt", "\n\n 解析：" + ExpPaper);
List<InnerExpression> expList = new List<InnerExpression>();
int lenT = ExpPaper.Length;
int cursor = 0, iflag = 0;
char chr = ExpPaper[cursor];
string strTemp = "", strExpression = "";
ReservedWords words = null;
while (cursor < lenT)
{
#region 字符扫描
chr = ExpPaper[cursor];
if (!ReservedWords.IsReservedChar(chr))
{
++cursor;
continue;
}
else
{
if (cursor > iflag)
{
strTemp = ExpPaper.Substring(iflag, cursor - iflag).Trim();
}
iflag = cursor;
words = new ReservedWords(chr);
if (words.IsBraceChar())
{
#region 配对字符解析
ReservedWords.MoveToCharBrace(chr, ReservedWords.GetBraceChar(chr),
ref cursor, ref ExpPaper);
if (chr == '(')
{
//Function
strExpression = ExpPaper.Substring(iflag + 1, cursor - iflag - 1);
//OleDbHelper.AppendToFile("~/debug.txt", "\n 函数体：" + strExpression);
if (strTemp.Length == 0) strTemp = null;
expList.Add(new InnerExpression(strTemp, strExpression, Res));
}
else if (chr == '?')
{
strExpression = ExpPaper.Substring(iflag + 1, cursor - iflag - 1).Trim();
#region 跳出双引号里面的 : 操作符号
if (strExpression.IndexOf('"') != -1 && strExpression[0] != '"')
{
ReservedWords.MoveToCharBrace('"', '"', ref cursor, ref ExpPaper);
ReservedWords.MoveToCharBrace(ExpPaper[cursor], ':', ref cursor, ref ExpPaper);
strExpression = ExpPaper.Substring(iflag + 1, cursor - iflag - 1).Trim();
}
#endregion
#region 跳出单引号里面的 : 操作符号
if (strExpression.IndexOf('\'') != -1 && strExpression[0] != '\'')
{
ReservedWords.MoveToCharBrace('\'', '\'', ref cursor, ref ExpPaper);
ReservedWords.MoveToCharBrace(ExpPaper[cursor], ':', ref cursor, ref ExpPaper);
strExpression = ExpPaper.Substring(iflag + 1, cursor - iflag - 1).Trim();
}
#endregion
if (strTemp.Length > 0)
{
expList.Add(new InnerExpression(strTemp));
}
expList.Add(new InnerExpression("?"));
expList.Add(new InnerExpression(strExpression));
expList.Add(new InnerExpression(":"));
//Util.Debug(false, ExpPaper.Substring(cursor));
}
else if (chr == '[')
{
// {#$["首页","新闻","动态","联系"][2]$#} = "动态"
#region 数组情况
if (cursor < lenT - 1)
{
char aIdx = ExpPaper[cursor + 1];
while (aIdx == '[')
{
cursor++;
ReservedWords.MoveToCharBrace(aIdx, ReservedWords.GetBraceChar(aIdx), ref cursor, ref ExpPaper);
if (cursor < (lenT - 1))
{
aIdx = ExpPaper[cursor + 1];
}
else { break; }
}
strExpression = ExpPaper.Substring(iflag, cursor - iflag + 1);
expList.Add(new InnerExpression(strExpression, ',', Res));
}
else
{
#region 获取数组下标操作TODO
strExpression = ExpPaper.Substring(iflag, cursor - iflag + 1);
expList.Add(new InnerExpression(strExpression, Res));
#endregion
}
#endregion
}
else if (chr == '$')
{
#region 内置系统标签
strExpression = ExpPaper.Substring(iflag, cursor - iflag + 1);
SystemTag sysTag = new SystemTag(string.Concat("{#", strExpression, "#}"));
sysTag.SetResourceDependency(Res);
//OleDbHelper.AppendToFile("~/debug.log", System.Environment.NewLine + string.Concat("{#", strExpression, "#}", "\n", sysTag.ToString()));
expList.Add(new InnerExpression(sysTag.ToString()));
#endregion
}
else if (chr == '"' || chr == '\'')
{
strExpression = ExpPaper.Substring(iflag, cursor - iflag + 1);
//Util.Debug(false, "Find String:" + strExpression);
expList.Add(new InnerExpression(strExpression));
}
#endregion
iflag = cursor + 1;
}
else if (words.IsOperator())
{
strExpression = strTemp;
if (strExpression.Length > 0)
{
InnerExpression exp = new InnerExpression(strExpression);
expList.Add(exp);
}
#region 处理操作符号
ParseOperator:
char chrNext = ExpPaper[cursor + 1];
if ((chr == '+' || chr == '-') && char.IsNumber(chrNext))
{
#region 正负号处理
++cursor;
if (cursor < lenT)
{
ReservedWords.MoveToCharInRange(ref cursor, ref ExpPaper, ' ', '*', '/', '%', '+', '-', '>', '<', '=', '!', '&', '^', '|');
expList.Add(new InnerExpression(ExpPaper.Substring(iflag, cursor - iflag)));
#region 如遇操作符
if (cursor < lenT && ExpPaper[cursor] != ' ')
{
iflag = cursor;
chr = ExpPaper[cursor];
//Util.Debug(false, "new char: = [" + chr.ToString() + "]");
goto ParseOperator;
}
#endregion
}
#endregion
}
else
{
// *= += -= ++ -- <>
if (ReservedWords.IsCharInRange(chrNext, '=', '+', '-', '>'))
{
expList.Add(new InnerExpression(chr.ToString() + chrNext.ToString()));
++cursor;
}
else
{
expList.Add(new InnerExpression(chr.ToString()));
}
}
#endregion
iflag = cursor + 1;
}
else
{
if (strTemp.Length > 0)
{
expList.Add(new InnerExpression(strTemp));
}
//Util.Debug(false, "11 - [" + strTemp.Trim() + "]" + "chr=[" + chr.ToString() + "]");
}
}
++cursor;
#endregion
}
if (iflag < cursor)
{
expList.Add(new InnerExpression(ExpPaper.Substring(iflag, cursor - iflag).Trim()));
}
//#region 解析结果查看
//foreach (InnerExpression ext in expList)
//{
// //Util.Debug(false, string.Concat("Exp定义：", ext.TagDefinition));
// OleDbHelper.AppendToFile("~/debug.log", System.Environment.NewLine + string.Concat("Exp定义：", ext.TagDefinition));
//}
//#endregion
return expList;
}
