public void Build(string[] Input)
{
try
{
Start = Input[0][0];
foreach (string s in Input)
{
if (s == string.Empty)
{
continue;
}
string[] tp = s.Split(new String[] { "→" }, StringSplitOptions.None);
if (tp.Length != 2)
{
throw new Exception("产生式应该有且仅有一个→");
}
if (tp[0].Length != 1 || !isVn(tp[0][0]))
{
throw new Exception("产生式左边应该是一个非终结符");
}
char left = tp[0][0];
char empty= System.Configuration.ConfigurationManager.AppSettings["Empty"][0];
Vn.Add(left);
string[] right;
if (tp[1][0] == '|')
{
right = new String[1] { tp[1] };
}
else
{
right = tp[1].Split('|');
}
for (int i = 0; i < right.Count(); ++i)
{
string part = right[i];
foreach (char c in part)
{
if (isVn(c))
{
Vn.Add(c);
}
else
{
Vt.Add(c);
}
}
Production p = new Production(left,part);
if(isVn(part[0]) || part.Length>2 || (part.Length==2 && !isVn(part[1])))
{
throw new Exception("不是一个合格的三型文法");
}
if (!ProductionsMap.ContainsKey(p))
{
Productions.Add(p);
ProductionsMap.Add(p, ProductionsMap.Count() + 1);
_ProductionsMap.Add(_ProductionsMap.Count() + 1, p);
}
}
}
}
catch (Exception )
{
throw new Exception("输入不合法\n");
}
}
public void Build(string[] Input)
{
try
{
Start = Input[0][0];
foreach (string s in Input)
{
if (s == string.Empty)
{
continue;
}
string[] tp = s.Split(new String[] { "→" }, StringSplitOptions.None);
if (tp.Length != 2)
{
throw new Exception("产生式应该有且仅有一个→");
}
if (tp[0].Length != 1 || !isVn(tp[0][0]))
{
throw new Exception("产生式左边应该是一个非终结符");
}
char left = tp[0][0];
char empty = System.Configuration.ConfigurationManager.AppSettings["Empty"][0];
Vn.Add(left);
string[] right;
if (tp[1][0] == '|')
{
right = new String[1] {
tp[1]
};
}
else
{
right = tp[1].Split('|');
}
for (int i = 0; i < right.Count(); ++i)
{
string part = right[i];
foreach (char c in part)
{
if (isVn(c))
{
Vn.Add(c);
}
else
{
Vt.Add(c);
}
}
Production p = new Production(left, part);
if (isVn(part[0]) || part.Length > 2 || (part.Length == 2 && !isVn(part[1])))
{
throw new Exception("不是一个合格的三型文法");
}
if (!ProductionsMap.ContainsKey(p))
{
Productions.Add(p);
ProductionsMap.Add(p, ProductionsMap.Count() + 1);
_ProductionsMap.Add(_ProductionsMap.Count() + 1, p);
}
}
}
}
catch (Exception)
{
throw new Exception("输入不合法\n");
}
}
