private cell MakeDFAcell(CloseSet C)
{
cell c = new cell();
/*-------------------------------------------------------------------------*/
for (int i = 0; i < C.CSet.Count; i++)
{
for (int j = 0; j < transymbol.Count; j++)
{
if (C.CSet[i].next[j] != -2)
{
edge e = new edge();
e.StartState.StateName = i;
e.TransSymbol = transymbol[j];
e.EndState.StateName = C.CSet[i].next[j];
c.EdgeSet.Add(e);
}
}
}
c.StartState.StateName = 0;
c.EndState.StateName = C.CSet.Count - 1;
c.EdgeCount = c.EdgeSet.Count;
return(c);
}
/*-------------------------------------------------------DFA转MFA----------------------------------------------------------*/
private cell MakeMFAcell()
{
cell m = new cell();
/*-------------------------------------------------------------------------*/
for (int i = 0; i < P.Count; i++)
{
for (int j = 0; j < transymbol.Count; j++)
{
if (P[i][0].next[j] != -2)
{
edge e = new edge();
e.StartState.StateName = P[i][0].StateName;
e.TransSymbol = transymbol[j];
e.EndState.StateName = P[i][0].next[j];
m.EdgeSet.Add(e);
}
}
}
m.StartState.StateName = 0;
m.EndState.StateName = DFA.EndState.StateName;
m.EdgeCount = m.EdgeSet.Count;
return(m);
}
private void DFAToMFA(char[] ch)
{
if (READFILE == false)
{
NFAToDFA(ch);
MFAmax = DFAe + 1;
}
P = new List <List <state> >();
P = InitP();
while (true)
{
int lastCount = P.Count;
for (int i = 0; i < P.Count; i++)
{
for (int j = 0; j < transymbol.Count; j++)
{
List <List <state> > D = Divide(P[i], transymbol[j]);
P.RemoveAt(i);
P.InsertRange(i, D);
}
}
if (P.Count == lastCount)
{
break;
}
}
Simplification();
MFA = MakeMFAcell();
cell result = MFA;
string output = null;
output = output + "开始状态 接受符号 到达状态\n";
for (int i = 0; i < result.EdgeCount; i++)
{
string s = String.Format("{0,-12}{1,-12}{2,-12}\n", result.EdgeSet[i].StartState.StateName, result.EdgeSet[i].TransSymbol, result.EdgeSet[i].EndState.StateName);
output = output + s;
}
richTextBox3.Text = output;
MFAb = MFA.StartState.StateName;
MFAe = MFA.EndState.StateName;
textBox6.Text = MFAb.ToString();
if (READFILE == false)
{
textBox7.Text = MFAe.ToString();
}
else
{
string m = String.Join(",", MFAes.ToArray());
textBox7.Text = m;
}
}
private void DFAToMFA(char[] ch)
{
NFAToDFA(ch);
P = new List <List <state> >();
P = InitP();
while (true)
{
int lastCount = P.Count;
for (int i = 0; i < P.Count; i++)
{
for (int j = 0; j < transymbol.Count; j++)
{
List <List <state> > D = Divide(P[i], transymbol[j]);
P.RemoveAt(i);
P.InsertRange(i, D);
}
/*-------------------------------------------------------------------------*/
//List<List<state>> D1 = Divide(P[i],'a');
//P.RemoveAt(i);
//P.InsertRange(i,D1);
//List<List<state>> D2 = Divide(P[i],'b');
//P.RemoveAt(i);
//P.InsertRange(i, D2);
/*-------------------------------------------------------------------------*/
}
if (P.Count == lastCount)
{
break;
}
}
Simplification();
MFA = MakeMFAcell();
cell result = MFA;
string output = null;
output = output + "开始状态 接受符号 到达状态\n";
for (int i = 0; i < result.EdgeCount; i++)
{
string s = String.Format("{0,-12}{1,-12}{2,-12}\n", result.EdgeSet[i].StartState.StateName, result.EdgeSet[i].TransSymbol, result.EdgeSet[i].EndState.StateName);
output = output + s;
}
richTextBox3.Text = output;
MFAb = MFA.StartState.StateName;
MFAe = MFA.EndState.StateName;
textBox6.Text = MFAb.ToString();
textBox7.Text = MFAe.ToString();
}
private cell OR(cell Left, cell Right)
{
cell NewCell = new cell();
NewCell.EdgeCount = 0;
edge Edge1 = new edge();
edge Edge2 = new edge();
edge Edge3 = new edge();
edge Edge4 = new edge();
state StartState = new state();
state EndState = new state();
StartState.StateName = ++stateName;
EndState.StateName = ++stateName;
//构建边
Edge1.StartState = StartState;
Edge1.EndState = Left.EdgeSet[0].StartState;
Edge1.TransSymbol = '#';
Edge2.StartState = StartState;
Edge2.EndState = Right.EdgeSet[0].StartState;
Edge2.TransSymbol = '#';
Edge3.StartState = Left.EdgeSet[Left.EdgeSet.Count - 1].EndState;
Edge3.EndState = EndState;
Edge3.TransSymbol = '#';
Edge4.StartState = Right.EdgeSet[Right.EdgeSet.Count - 1].EndState;
Edge4.EndState = EndState;
Edge4.TransSymbol = '#';
//构建单元
NewCell.EdgeSet.AddRange(Left.EdgeSet);
NewCell.EdgeSet.AddRange(Right.EdgeSet);
NewCell.EdgeSet.Add(Edge1);
NewCell.EdgeSet.Add(Edge2);
NewCell.EdgeSet.Add(Edge3);
NewCell.EdgeSet.Add(Edge4);
NewCell.EdgeCount = NewCell.EdgeSet.Count;
NewCell.StartState = StartState;
NewCell.EndState = EndState;
return(NewCell);
}//'|'的运算
}//'+''-'的运算
private cell CLOSURE(cell Cell)
{
cell NewCell = new cell();
NewCell.EdgeCount = 0;
edge Edge1 = new edge();
edge Edge2 = new edge();
edge Edge3 = new edge();
edge Edge4 = new edge();
state StartState = new state();
state EndState = new state();
StartState.StateName = ++stateName;
EndState.StateName = ++stateName;
//e1
Edge1.StartState = StartState;
Edge1.EndState = EndState;
Edge1.TransSymbol = '#'; //闭包取空串
//e2
Edge2.StartState = Cell.EndState;
Edge2.EndState = Cell.StartState;
Edge2.TransSymbol = '#'; //取字符，自连接
//e3
Edge3.StartState = StartState;
Edge3.EndState = Cell.StartState;
Edge3.TransSymbol = '#';
//e4
Edge4.StartState = Cell.EndState;
Edge4.EndState = EndState;
Edge4.TransSymbol = '#';
NewCell.EdgeSet.AddRange(Cell.EdgeSet);
NewCell.EdgeSet.Add(Edge1);
NewCell.EdgeSet.Add(Edge2);
NewCell.EdgeSet.Add(Edge3);
NewCell.EdgeSet.Add(Edge4);
NewCell.StartState = StartState;
NewCell.EndState = EndState;
NewCell.EdgeCount = NewCell.EdgeSet.Count;
return(NewCell);
}//'*'的运算
private void WriteNFA()
{
cell result = NFA;
string output = null;
output = output + "开始状态 接受符号 到达状态\n";
for (int i = 0; i < result.EdgeCount; i++)
{
string s = String.Format("{0,-12}{1,-12}{2,-12}\n", result.EdgeSet[i].StartState.StateName, result.EdgeSet[i].TransSymbol, result.EdgeSet[i].EndState.StateName);
output = output + s;
}
richTextBox1.Text = output;
NFAb = NFA.StartState.StateName;
NFAe = NFA.EndState.StateName;
textBox2.Text = NFAb.ToString();
textBox3.Text = NFAe.ToString();
}//将读取的NFA输出
private cell MakeDFAcell(CloseSet C)
{
cell c = new cell();
/*-------------------------------------------------------------------------*/
for (int i = 0; i < C.CSet.Count; i++)
{
for (int j = 0; j < transymbol.Count; j++)
{
edge e = new edge();
e.StartState.StateName = i;
e.TransSymbol = transymbol[j];
e.EndState.StateName = C.CSet[i].next[j];
c.EdgeSet.Add(e);
}
}
/*-------------------------------------------------------------------------*/
//for (int i = 0; i < C.CSet.Count; i++)
//{
// edge e = new edge();
// e.StartState.StateName = i;
// e.TransSymbol = 'a';
// e.EndState.StateName = C.CSet[i].anext;
// c.EdgeSet.Add(e);
//}
//for (int i = 0; i < C.CSet.Count; i++)
//{
// edge e = new edge();
// e.StartState.StateName = i;
// e.TransSymbol = 'b';
// e.EndState.StateName = C.CSet[i].bnext;
// c.EdgeSet.Add(e);
//}
/*-------------------------------------------------------------------------*/
c.StartState.StateName = 0;
c.EndState.StateName = C.CSet.Count - 1;
c.EdgeCount = c.EdgeSet.Count;
return(c);
}
}//将读取的NFA输出
private void WriteDFA()
{
cell result = DFA;
string output = null;
output = output + "开始状态 接受符号 到达状态\n";
for (int i = 0; i < result.EdgeCount; i++)
{
string s = String.Format("{0,-12}{1,-12}{2,-12}\n", result.EdgeSet[i].StartState.StateName, result.EdgeSet[i].TransSymbol, result.EdgeSet[i].EndState.StateName);
output = output + s;
}
richTextBox2.Text = output;
textBox4.Text = DFAb.ToString();
string d = String.Join(",", DFAes.ToArray());
textBox5.Text = d;
}
}//'|'的运算
private cell PLUS(cell Left, cell Right)
{
for (int i = 0; i < Right.EdgeCount; i++)
{
if (Right.EdgeSet[i].StartState.StateName == Right.StartState.StateName)
{
Right.EdgeSet[i].StartState = Left.EndState;
}
else if (Right.EdgeSet[i].EndState.StateName == Right.StartState.StateName)
{
Right.EdgeSet[i].EndState = Left.EndState;
}
}
//
Right.StartState = Left.EndState;
Left.EdgeSet.AddRange(Right.EdgeSet);
Left.EndState = Right.EndState;
Left.EdgeCount = Left.EdgeSet.Count;
return(Left);
}//'+''-'的运算
/*-------------------------------------------------------DFA转MFA----------------------------------------------------------*/
private cell MakeMFAcell()
{
cell m = new cell();
/*-------------------------------------------------------------------------*/
for (int i = 0; i < P.Count; i++)
{
for (int j = 0; j < transymbol.Count; j++)
{
edge e = new edge();
e.StartState.StateName = P[i][0].StateName;
e.TransSymbol = transymbol[j];
e.EndState.StateName = P[i][0].next[j];
m.EdgeSet.Add(e);
}
}
/*-------------------------------------------------------------------------*/
//for (int i = 0; i < P.Count; i++)
//{
// edge e = new edge();
// e.StartState.StateName = P[i][0].StateName;
// e.TransSymbol = 'a';
// e.EndState.StateName = P[i][0].anext;
// m.EdgeSet.Add(e);
//}
//for (int i = 0; i < P.Count; i++)
//{
// edge e = new edge();
// e.StartState.StateName = P[i][0].StateName;
// e.TransSymbol = 'b';
// e.EndState.StateName = P[i][0].bnext;
// m.EdgeSet.Add(e);
//}
/*-------------------------------------------------------------------------*/
m.StartState.StateName = 0;
m.EndState.StateName = DFA.EndState.StateName;
m.EdgeCount = m.EdgeSet.Count;
return(m);
}
private cell MakeCell(char symbol)
{
cell NewCell = new cell();
NewCell.EdgeCount = 0;
edge NewEdge = new edge();
//新节点
state StartState = new state();
state EndState = new state();
StartState.StateName = ++stateName;
EndState.StateName = ++stateName;
//新边，加入两个新节点
NewEdge.StartState = StartState;
NewEdge.EndState = EndState;
NewEdge.TransSymbol = symbol;
//构建新单元
NewCell.EdgeSet.Add(NewEdge);
NewCell.StartState = NewCell.EdgeSet[0].StartState;
NewCell.EndState = NewCell.EdgeSet[0].EndState;
NewCell.EdgeCount = NewCell.EdgeSet.Count;
return(NewCell);
}
private void Calculation()
{
cell c = new cell();
for (int i = 0; i < output.Count; i++)
{
if (output[i] == '+')
{
List <cell> para = new List <cell>();
for (int j = 0; j < 2; j++)
{
para.Add(calculate.Pop()); //查看计算过的Cell
}
calculate.Push(PLUS(para[1], para[0])); //左->右
}
else if (output[i] == '|')
{
List <cell> para = new List <cell>();
for (int j = 0; j < 2; j++)
{
para.Add(calculate.Pop());
}
calculate.Push(OR(para[0], para[1]));
}
else if (output[i] == '*')
{
List <cell> para = new List <cell>();
para.Add(calculate.Pop());
calculate.Push(CLOSURE(para[0]));
}
else
{
calculate.Push(MakeCell(output[i]));
}
}
}
private void NFAToDFA(char[] ch)
{
if (READFILE == false)
{
NormalToNFA(ch);
}
CloseSet C = new CloseSet();
TSet T0 = new TSet();
//T0.tSet.Add(NFAb);
List <int> t = new List <int>();
t.Add(NFAb);
T0 = E_Closure(t);
T0.tSet.Sort();
//T0.Unrepeated();
C.CSet.Add(T0);
while (C.Check() != true)
{
int order = C.Sign();
TSet Ta = new TSet();
TSet Tb = new TSet();
List <TSet> Tedges = new List <TSet>();
TSet T = new TSet();
/*-------------------------------------------------------------------------*/
for (int i = 0; i < C.CSet[order].tSet.Count; i++)
{
T.tSet.Add(C.CSet[order].tSet[i]);
}
for (int i = 0; i < transymbol.Count; i++)
{
TSet temp = E_Closure(Move(T, transymbol[i]));
temp.tSet.Sort();
Tedges.Add(temp);
}
for (int i = 0; i < transymbol.Count; i++)
{
if (C.JoinNew(Tedges[i]) == -1)
{
C.CSet.Add(Tedges[i]);
C.CSet[order].next[i] = C.CSet.Count - 1;
}
else
{
C.CSet[order].next[i] = C.JoinNew(Tedges[i]);
}
}
}
MFAset = C;
DFAes.Add(MFAset.CSet.Count - 1);
DFA = MakeDFAcell(C);
cell result = DFA;
string output = null;
output = output + "开始状态 接受符号 到达状态\n";
for (int i = 0; i < result.EdgeCount; i++)
{
string s = String.Format("{0,-12}{1,-12}{2,-12}\n", result.EdgeSet[i].StartState.StateName, result.EdgeSet[i].TransSymbol, result.EdgeSet[i].EndState.StateName);
output = output + s;
}
richTextBox2.Text = output;
DFAb = DFA.StartState.StateName;
DFAe = DFA.EndState.StateName;
textBox4.Text = DFAb.ToString();
textBox5.Text = DFAe.ToString();
if (READFILE == false)
{
textBox5.Text = DFAe.ToString();
}
else
{
List <int> ends = new List <int>();
DFAes = ends;
for (int i = 0; i < C.CSet.Count; i++)
{
if (C.CSet[i].tSet.Contains(NFAe) == true)
{
ends.Add(i);
}
}
string d = String.Join(",", ends.ToArray());
textBox5.Text = d;
}
}
private void NormalToNFA(char[] ch)
{
List <char> chList = new List <char>();
for (int i = 0; i < ch.Length; i++)
{
chList.Add(ch[i]);
}
transymbol.Clear();
transymbol.AddRange(chList.Distinct());
for (int i = 0; i < transymbol.Count; i++)
{
if (transymbol[i] < 'a' || transymbol[i] > 'z')
{
transymbol.RemoveAt(i);
i--;
}
}
int len = chList.Count;
/*
*
* 插入加号
* 加号表示左->右
* 考虑 a+b a* ()左右两边的情况
*
*/
for (int i = 0; i < chList.Count; i++)
{
if (chList[i] == '(' && i > 0)
{
if (chList[i - 1] != '(')
{
chList.Insert(i, '+');
i++;
}
}
else if (transymbol.Contains(chList[i]) && i != 0)
{
if (transymbol.Contains(chList[i - 1]) || chList[i - 1] == ')' || chList[i - 1] == '*')
{
chList.Insert(i, '+');
i++;
}
}
else if (transymbol.Contains(chList[i]) && i != 0)
{
if (transymbol.Contains(chList[i - 1]) || chList[i - 1] == ')' || chList[i - 1] == '*')
{
chList.Insert(i, '+');
i++;
}
}
}
string str = String.Join("", chList);
char[] newch = chList.ToArray();
FrontToBack(newch);
Calculation();
NFA = calculate.Pop();
cell result = NFA;
string output = null;
output = output + "开始状态 接受符号 到达状态\n";
for (int i = 0; i < result.EdgeCount; i++)
{
string s = String.Format("{0,-12}{1,-12}{2,-12}\n", result.EdgeSet[i].StartState.StateName, result.EdgeSet[i].TransSymbol, result.EdgeSet[i].EndState.StateName);
output = output + s;
}
richTextBox1.Text = output;
NFAb = NFA.StartState.StateName;
NFAe = NFA.EndState.StateName;
textBox2.Text = NFAb.ToString();
textBox3.Text = NFAe.ToString();
}
private void NFAToDFA(char[] ch)
{
NormalToNFA(ch);
CloseSet C = new CloseSet();
TSet T0 = new TSet();
//T0.tSet.Add(NFAb);
List <int> t = new List <int>();
t.Add(NFAb);
T0 = E_Closure(t);
T0.tSet.Sort();
//T0.Unrepeated();
C.CSet.Add(T0);
while (C.Check() != true)
{
int order = C.Sign();
TSet Ta = new TSet();
TSet Tb = new TSet();
List <TSet> Tedges = new List <TSet>();
TSet T = new TSet();
/*-------------------------------------------------------------------------*/
for (int i = 0; i < C.CSet[order].tSet.Count; i++)
{
T.tSet.Add(C.CSet[order].tSet[i]);
}
for (int i = 0; i < transymbol.Count; i++)
{
TSet temp = E_Closure(Move(T, transymbol[i]));
temp.tSet.Sort();
Tedges.Add(temp);
}
for (int i = 0; i < transymbol.Count; i++)
{
if (C.JoinNew(Tedges[i]) == -1)
{
C.CSet.Add(Tedges[i]);
C.CSet[order].next[i] = C.CSet.Count - 1;
}
else
{
C.CSet[order].next[i] = C.JoinNew(Tedges[i]);
}
}
/*-------------------------------------------------------------------------*/
//Ta = E_Closure(Move(T,'a'));
//Tb = E_Closure(Move(T,'b'));
//Ta.tSet.Sort();
//Tb.tSet.Sort();
//if (C.JoinNew(Ta) == -1)
//{
// C.CSet.Add(Ta);
// C.CSet[order].anext = C.CSet.Count-1;
//}
//else
//{
// C.CSet[order].anext = C.JoinNew(Ta);
//}
//if (C.JoinNew(Tb) == -1)
//{
// C.CSet.Add(Tb);
// C.CSet[order].bnext = C.CSet.Count - 1;
//}
//else
//{
// C.CSet[order].bnext = C.JoinNew(Tb);
//}
/*-------------------------------------------------------------------------*/
}
MFAset = C;
DFA = MakeDFAcell(C);
cell result = DFA;
string output = null;
output = output + "开始状态 接受符号 到达状态\n";
for (int i = 0; i < result.EdgeCount; i++)
{
string s = String.Format("{0,-12}{1,-12}{2,-12}\n", result.EdgeSet[i].StartState.StateName, result.EdgeSet[i].TransSymbol, result.EdgeSet[i].EndState.StateName);
output = output + s;
}
richTextBox2.Text = output;
DFAb = DFA.StartState.StateName;
DFAe = DFA.EndState.StateName;
textBox4.Text = DFAb.ToString();
textBox5.Text = DFAe.ToString();
}