private void EvaluateBinaryElements(Operator operatorType, Func <long, long, long> expression)
{
for (int i = 0; i < elementCount; i++)
{
var current = elements[i];
if (current.Operator == operatorType)
{
int leftOperandIndex, rightOperandIndex;
var leftOperand = this.GetPreviousDecimalValue(i, out leftOperandIndex);
var rightOperand = this.GetNextDecimalValue(i, out rightOperandIndex);
if (leftOperand == null || rightOperand == null)
{
throw new Exception("Expected operand.");
}
long left = leftOperand.GetValue();
long right = rightOperand.GetValue();
long result = expression(left, right);
elements[i] = new IntegralExpressionElement(result.ToString(), ExpressionElement.DecimalNumber, Operator.NotAnOperator);
elements[leftOperandIndex] = elements[rightOperandIndex] = IntegralExpressionElement.Empty;
}
}
}
private void EvaluateTernaryElements(Operator operatorType, Func <long, long, long, long> expression)
{
for (int i = 0; i < elementCount; i++)
{
var current = elements[i];
if (current.Operator == operatorType)
{
int operand1Index, operand2Index, operand3Index;
var operand1 = GetPreviousDecimalValue(i, out operand1Index);
var operand2 = GetNextDecimalValue(i, out operand2Index);
var operand3 = GetNextDecimalValue(operand2Index, out operand3Index);
int secondOperatorIndex = -1;
for (int j = operand2Index; j < operand3Index; j++)
{
if (elements[j].ElementType == ExpressionElement.TernaryOperator)
{
secondOperatorIndex = j;
break;
}
else if (j == operand3Index - 1)
{
throw new Exception("Expected matching operator.");
}
}
elements[secondOperatorIndex] = IntegralExpressionElement.Empty;
long value1 = operand1.GetValue();
long value2 = operand2.GetValue();
long value3 = operand3.GetValue();
long result = expression(value1, value2, value3);
elements[i] = new IntegralExpressionElement(result.ToString(), ExpressionElement.DecimalNumber, Operator.NotAnOperator);
elements[operand1Index] = elements[operand2Index] = elements[operand3Index] = IntegralExpressionElement.Empty;
}
}
}
private void EvaluateUnaryPostfixElements(Operator operatorType, Func <long, long> expression)
{
for (int i = 0; i < elementCount; i++)
{
var current = elements[i];
if (current.Operator == operatorType)
{
int operandIndex;
var operand = this.GetPreviousDecimalValue(i, out operandIndex);
if (operand == null)
{
throw new Exception("Expected operand.");
}
long value = operand.GetValue();
value = expression(value);
elements[operandIndex] = new IntegralExpressionElement(value.ToString(), ExpressionElement.DecimalNumber, Operator.NotAnOperator);
elements[i] = IntegralExpressionElement.Empty;
}
}
}
private void EvaluateUnaryPrefixElements(Operator operatorType, Func<long, long> expression)
{
for (int i = 0; i < elementCount; i++)
{
var current = elements[i];
if (current.Operator == operatorType)
{
int operandIndex;
var operand = this.GetNextDecimalValue(i, out operandIndex);
if (operand == null)
{
throw new Exception("Expected operand.");
}
long value = operand.GetValue();
value = expression(value);
elements[operandIndex] = new IntegralExpressionElement(value.ToString(), ExpressionElement.DecimalNumber, Operator.NotAnOperator);
elements[i] = IntegralExpressionElement.Empty;
}
}
}
private void EvaluateTernaryElements(Operator operatorType, Func<long, long, long, long> expression)
{
for (int i = 0; i < elementCount; i++)
{
var current = elements[i];
if (current.Operator == operatorType)
{
int operand1Index, operand2Index, operand3Index;
var operand1 = GetPreviousDecimalValue(i, out operand1Index);
var operand2 = GetNextDecimalValue(i, out operand2Index);
var operand3 = GetNextDecimalValue(operand2Index, out operand3Index);
int secondOperatorIndex = -1;
for (int j = operand2Index; j < operand3Index; j++)
{
if (elements[j].ElementType == ExpressionElement.TernaryOperator)
{
secondOperatorIndex = j;
break;
}
else if (j == operand3Index - 1)
{
throw new Exception("Expected matching operator.");
}
}
elements[secondOperatorIndex] = IntegralExpressionElement.Empty;
long value1 = operand1.GetValue();
long value2 = operand2.GetValue();
long value3 = operand3.GetValue();
long result = expression(value1, value2, value3);
elements[i] = new IntegralExpressionElement(result.ToString(), ExpressionElement.DecimalNumber, Operator.NotAnOperator);
elements[operand1Index] = elements[operand2Index] = elements[operand3Index] = IntegralExpressionElement.Empty;
}
}
}
private void EvaluateBinaryElements(Operator operatorType, Func<long, long, long> expression)
{
for (int i = 0; i < elementCount; i++)
{
var current = elements[i];
if (current.Operator == operatorType)
{
int leftOperandIndex, rightOperandIndex;
var leftOperand = this.GetPreviousDecimalValue(i, out leftOperandIndex);
var rightOperand = this.GetNextDecimalValue(i, out rightOperandIndex);
if (leftOperand == null || rightOperand == null)
{
throw new Exception("Expected operand.");
}
long left = leftOperand.GetValue();
long right = rightOperand.GetValue();
long result = expression(left, right);
elements[i] = new IntegralExpressionElement(result.ToString(), ExpressionElement.DecimalNumber, Operator.NotAnOperator);
elements[leftOperandIndex] = elements[rightOperandIndex] = IntegralExpressionElement.Empty;
}
}
}
