protected IOperand DoDoubleOperation(DoubleOperand lhs, DoubleOperand rhs, DoubleOperator @operator)
{
double result = @operator(lhs.ValueAsDouble, rhs.ValueAsDouble);
if (IsInvalidDouble(result))
{
return(new ErrorValueOperand(ErrorValueType.Num));
}
return(new DoubleOperand(result));
}
public string ConsumeNext()
{
while (currentIndex < totalLength)
{
var currentChar = this.Source[currentIndex];
if (Helper.StringHelper.isSpaceCharacters(currentChar))
{
if (!string.IsNullOrEmpty(currentValue))
{
string newvalue = currentValue;
currentValue = string.Empty;
currentIndex += 1;
return(newvalue);
}
else
{
currentIndex += 1;
}
}
else if (IsSeperator(currentChar))
{
if (!string.IsNullOrEmpty(currentValue))
{
string newvalue = currentValue;
currentValue = string.Empty;
return(newvalue);
}
else
{
var next = LookAhead();
if (next != default(char))
{
string combine = currentChar.ToString() + next.ToString();
if (DoubleOperator.Contains(combine))
{
currentIndex += 2;
return(combine);
}
else
{
currentIndex += 1;
return(currentChar.ToString());
}
}
currentIndex += 1;
return(currentChar.ToString());
}
}
else if (currentChar == '"' || currentChar == '\'')
{
if (!string.IsNullOrEmpty(currentValue))
{
string newvalue = currentValue;
currentValue = string.Empty;
return(newvalue);
}
else
{
string value = LookTill(currentChar);
return(value);
}
}
else
{
this.currentValue += currentChar;
currentIndex += 1;
}
}
if (!string.IsNullOrEmpty(this.currentValue))
{
string newvalue = this.currentValue;
this.currentValue = string.Empty;
return(newvalue);
}
return(null);
}
protected void BuildConstraints()
{
// Variablen
VariablesOperator o = new VariablesOperator("O");
VariablesOperator x1 = new VariablesOperator("X1");
VariablesOperator w = new VariablesOperator("W");
VariablesOperator u = new VariablesOperator("U");
VariablesOperator x2 = new VariablesOperator("X2");
VariablesOperator t = new VariablesOperator("T");
VariablesOperator f = new VariablesOperator("F");
VariablesOperator r = new VariablesOperator("R");
VariablesOperator x3 = new VariablesOperator("X3");
// Konstanten
DoubleOperator ten = new DoubleOperator(10);
// O + O = R + 10 * X1
Addition firstAddition = new Addition(o, o);
Multiply multiply = new Multiply(ten, x1);
Addition secondAddition = new Addition(r, multiply);
Equal equal = new Equal(firstAddition, secondAddition);
Constraint constraint = new Constraint(equal);
_constraintList.Add("O", constraint);
_constraintList.Add("R", constraint);
_constraintList.Add("X1", constraint);
// X1 + W + W = U + 10 * X2
secondAddition = new Addition(w, w);
firstAddition = new Addition(x1, secondAddition);
multiply = new Multiply(ten, x2);
secondAddition = new Addition(u, multiply);
equal = new Equal(firstAddition, secondAddition);
constraint = new Constraint(equal);
_constraintList.Add("X1", constraint);
_constraintList.Add("W", constraint);
_constraintList.Add("U", constraint);
_constraintList.Add("X2", constraint);
// X2 + T + T = O + 10 * X3
secondAddition = new Addition(t, t);
firstAddition = new Addition(x2, secondAddition);
multiply = new Multiply(ten, x3);
secondAddition = new Addition(o, multiply);
equal = new Equal(firstAddition, secondAddition);
constraint = new Constraint(equal);
_constraintList.Add("X2", constraint);
_constraintList.Add("T", constraint);
_constraintList.Add("O", constraint);
_constraintList.Add("X3", constraint);
// X3 = F
equal = new Equal(x3, f);
constraint = new Constraint(equal);
_constraintList.Add("X3", constraint);
_constraintList.Add("F", constraint);
ConstraintConfiguration configuration = new ConstraintConfiguration();
// Variablen
AddVariable(configuration, "O");
AddVariable(configuration, "X1");
AddVariable(configuration, "W");
AddVariable(configuration, "U");
AddVariable(configuration, "X2");
AddVariable(configuration, "T");
AddVariable(configuration, "F");
AddVariable(configuration, "R");
AddVariable(configuration, "X3");
_begin = CreateNode(null, configuration);
}
