public static ArrayList GetParamList(string Exipression, string StaName)
{
char[] chArray = Exipression.Trim().ToCharArray();
ArrayList ListParam = new ArrayList();
int i = 0;
int startpos = 0;
int endpos = 0;
ExpressionParser.EDFAState prestate = ExpressionParser.EDFAState.Start; //DFA的前一个状态
ListParam.Clear();
while (i < chArray.Length)
{
if (prestate == ExpressionParser.EDFAState.CharStr)
{
//字符串结构 - 字符串结构是处理当前态 - 其它类型是处理上一态
if (chArray[i] == '"')
{
prestate = ExpressionParser.EDFAState.Start;
}
}
else if (prestate == ExpressionParser.EDFAState.ABCStr)
{//参数或者字母已经开始
//不是字母、数字、下划线、点号，表示参数结束
if (chArray[i] != '_' && chArray[i] != '.' && !Char.IsLetter(chArray[i]) && !Char.IsDigit(chArray[i]))
{
endpos = i - 1;
CParameter obj = GetParam(startpos, endpos, Exipression, StaName);
if (obj != null)
{
ListParam.Add(obj);
}
prestate = ExpressionParser.EDFAState.Start;
}
}
else if (chArray[i] == '"')
{
if (prestate == ExpressionParser.EDFAState.CharStr)
{
prestate = ExpressionParser.EDFAState.Start;
}
else
{
//字符串开始
prestate = ExpressionParser.EDFAState.CharStr;
}
}
else if (Char.IsLetter(chArray[i]))
{//参数 或者字母开始
//字母
if (prestate != ExpressionParser.EDFAState.ABCStr)
{
prestate = ExpressionParser.EDFAState.ABCStr;
startpos = i; //保存开始位置
}
}
i++;
if (i == chArray.Length)
{
endpos = i - 1;
if (prestate == ExpressionParser.EDFAState.ABCStr)
{
CParameter obj = GetParam(startpos, endpos, Exipression, StaName);
if (obj != null)
{
ListParam.Add(obj);
}
}
}
}// end while
return(ListParam);
}
/// <summary>
/// 获取参数
/// </summary>
public void GetParam()
{
char[] chArray = Exipression.Trim().ToCharArray();
int i = 0;
int startpos = 0;
int endpos = 0;
ExpressionParser.EDFAState prestate = ExpressionParser.EDFAState.Start; //DFA的前一个状态
ListParam.Clear();
while (i < chArray.Length)
{
if (prestate == ExpressionParser.EDFAState.CharStr)
{
//字符串结构 - 字符串结构是处理当前态 - 其它类型是处理上一态
if (chArray[i] == '"')
{
prestate = ExpressionParser.EDFAState.Start;
}
}
else if (prestate == ExpressionParser.EDFAState.ABCStr)
{//参数或者字母已经开始
//不是字母、数字、下划线、点号，表示参数结束
if (chArray[i] != '_' && chArray[i] != '.' && !Char.IsLetter(chArray[i]) && !Char.IsDigit(chArray[i]))
{
endpos = i - 1;
AddToLink(startpos, endpos);
prestate = ExpressionParser.EDFAState.Start;
}
}
else if (chArray[i] == '"')
{
if (prestate == ExpressionParser.EDFAState.CharStr)
{
prestate = ExpressionParser.EDFAState.Start;
}
else
{
//字符串开始
prestate = ExpressionParser.EDFAState.CharStr;
}
}
else if (Char.IsLetter(chArray[i]))
{//参数 或者字母开始
//字母
if (prestate != ExpressionParser.EDFAState.ABCStr)
{
prestate = ExpressionParser.EDFAState.ABCStr;
startpos = i; //保存开始位置
}
}
i++;
if (i == chArray.Length)
{
endpos = i - 1;
if (prestate == ExpressionParser.EDFAState.ABCStr)
{
AddToLink(startpos, endpos);
}
}
}// end while
}
