//Выражение в скобках
public void WoLExpr(ref string Input, out WoLNode Node)
{
Input = Input.Trim();
Node = null;
if (Input.Length != 0)
{
_WoLAnd(ref Input, out Node);
if (pars_Err != 0)
return;
Input = Input.Trim();
while ((Input.Length > 0) && (Input[0] == '|'))
{
_WoLTakeElements(ref Input, 1);
if (Input.Length == 0)
{
pars_Err = 0;
return;
}
WoLNode SecondNode;
_WoLOr(ref Input, out SecondNode);
if (pars_Err != 0)
return;
WoLNode FirstNode = Node;
WoLOperations Op = WoLOperations.OR;
Node = new WoLOperation(Op, FirstNode, SecondNode);
}
}
}
public WoLLogics(int Width, int Height)
{
pars_Top = null;
pars_Canvas = new Bitmap(Width, Height);
_Font = new Font("Courier New", 10, FontStyle.Bold);
pars_Err = 0;
}
// смещение поддерева
public void WoLDelta(WoLNode Node, int dx, int dy)
{
Node.x -= dx; Node.y -= dy;
if ((Node is WoLOperation) && ((Node as WoLOperation).opnode_Left != null))
WoLDelta((Node as WoLOperation).opnode_Left, dx, dy);
if ((Node is WoLOperation) && ((Node as WoLOperation).opnode_Right != null))
WoLDelta((Node as WoLOperation).opnode_Right, dx, dy);
}
void _WoLOr(ref string Input, out WoLNode Node)
{
Node = null;
Input = Input.Trim();
string _Sign;
if (Input.Length != 0)
{
_WoLFact(ref Input, out Node);
while ((Input.Length != 0) &&(Input[0] == '|'))
{
_Sign = _WoLTakeElements(ref Input, 1);
if (Input.Length == 0)
{
pars_Err = 5;
return;
}
WoLNode SecondNode;
_WoLAnd(ref Input, out SecondNode);
}
}
else
pars_Err = 4; //Нужно выражение
}
public WoLOperation(WoLOperations Operation, WoLNode Left, WoLNode Right)
{
opnode_Left = Left;
opnode_Operation = Operation;
opnode_Right = Right;
}
//Элемент
void _WoLFact(ref string Input, out WoLNode Node)
{
Node = null;
Input = Input.Trim();
if (Input.Length != 0)
{
if (_WoLTestConst(Input[0], 't', 'T', 'F', 'f'))
{
bool Letter;
_WoLSetValue(ref Input, out Letter);
if (pars_Err != 0)
return;
Node = new WoLValueNode(Letter);
}
else
if (Input[0] == '(')
{
_WoLTakeElements(ref Input, 1);
WoLExpr(ref Input, out Node);
if (pars_Err != 0)
return;
Input = Input.Trim();
if ((Input.Length > 0) && (Input[0] != ')'))
{
pars_Err = 9; //Нет скобки
return;
}
_WoLTakeElements(ref Input, 1);
}
else
pars_Err = 6;
}
else
pars_Err = 6; //?!?!?!?!
}
//AND
void _WoLAnd(ref string Input, out WoLNode Node)
{
Input = Input.Trim();
Node = null;
if (Input.Length != 0)
{
_WoLFact(ref Input, out Node);
if (pars_Err != 0)
return;
while ((Input.Length != 0) && (Input[0] == '&'))
{
_WoLTakeElements(ref Input, 1);
if (Input.Length == 0)
{
pars_Err = 6; //Нужен множитель
return;
}
WoLNode SecondNode;
_WoLFact(ref Input, out SecondNode);
if (pars_Err != 0)
return;
WoLNode FirstNode = Node;
WoLOperations Op = WoLOperations.AND;
Node = new WoLOperation(Op, FirstNode, SecondNode);
}
}
else
pars_Err = 5; //Нужно слагаемое
}
void WoLDrawNode(WoLNode Node)
{
int R = 17;
if ((Node is WoLOperation) && ((Node as WoLOperation).opnode_Left != null))
_Graph.DrawLine(_Pen, Node.x, Node.y, (Node as WoLOperation).opnode_Left.x, (Node as WoLOperation).opnode_Left.y);
if ((Node is WoLOperation) && ((Node as WoLOperation).opnode_Right != null))
_Graph.DrawLine(_Pen, Node.x, Node.y, (Node as WoLOperation).opnode_Right.x, (Node as WoLOperation).opnode_Right.y);
_Brush = (SolidBrush)Brushes.LightYellow;
_Graph.FillEllipse(_Brush, Node.x - R, Node.y - R, 2 * R, 2 * R);
_Graph.DrawEllipse(_Pen, Node.x - R, Node.y - R, 2 * R, 2 * R);
string Data = "";
if (Node is WoLOperation)
switch ((Node as WoLOperation).opnode_Operation)
{
case WoLOperations.OR:
Data = "|";
break;
case WoLOperations.AND:
Data = "&";
break;
}
else
Data = Node.Value.ToString();
SizeF size = _Graph.MeasureString(Data[0].ToString(), _Font);
_Graph.DrawString(Data[0].ToString(), _Font, Brushes.Black, Node.x - size.Width / 2, Node.y - size.Height / 2);
if ((Node is WoLOperation) && ((Node as WoLOperation).opnode_Left != null))
WoLDrawNode((Node as WoLOperation).opnode_Left);
if ((Node is WoLOperation) && ((Node as WoLOperation).opnode_Right != null))
WoLDrawNode((Node as WoLOperation).opnode_Right);
}
public void WoLSetCoords(WoLNode Node, int x, int y)
{
Node.x = x;
Node.y = y;
if ((Node is WoLOperation) && ((Node as WoLOperation).opnode_Left != null))
WoLSetCoords((Node as WoLOperation).opnode_Left, x - 50, y + 50);
if ((Node is WoLOperation) && ((Node as WoLOperation).opnode_Right != null))
WoLSetCoords((Node as WoLOperation).opnode_Right, x + 50, y + 50);
}
// поиск по координатам
//Дальше писал не сам
public WoLNode WoLFindNode(WoLNode Node, int x, int y)
{
WoLNode result = null;
if (Node == null)
return result;
if (((Node.x - x) * (Node.x - x) + (Node.y - y) * (Node.y - y)) < 100)
result = Node;
else
{
if ((Node is WoLOperation) && ((Node as WoLOperation).opnode_Left != null))
result = WoLFindNode((Node as WoLOperation).opnode_Left, x, y);
if ((result == null) && (Node is WoLOperation) && ((Node as WoLOperation).opnode_Right != null))
result = WoLFindNode((Node as WoLOperation).opnode_Right, x, y);
}
return result;
}
