private void PutBinaryOperation(BinaryOperation operation)
{
if (stack.Count > 0)
{
var attr = OperationAttribute.Get(operation);
Value = Reduce(attr.Precedence);
}
stack.Push(new StackOperation(Value, operation));
CreateNewValue(Value.Radix);
}
private CalculatorNumber Reduce(Precedence precedence)
{
var number = Value;
while (stack.Count > 0)
{
var tos = stack.Peek();
if ((int)tos.Precedence < (int)precedence)
{
break;
}
tos = stack.Pop();
number = new CalculatorNumber(tos.Perform(number));
}
return(number);
}
private void LocalPutKey(string key)
{
key = key.ToUpper();
switch (key)
{
case @"CA":
Value.Clear();
stack.Clear();
break;
case @"CE":
Value.Clear();
break;
case @".":
case @"DOT":
Value.SetDecimalMark();
break;
case @"0":
case @"1":
case @"2":
case @"3":
case @"4":
case @"5":
case @"6":
case @"7":
case @"8":
case @"9":
Value.AddDigit(key[0] - '0');
break;
case @"A":
case @"B":
case @"C":
case @"D":
case @"E":
case @"F":
Value.AddDigit(10 + key[0] - 'A');
break;
case @"BCK":
Value.DelDigit();
break;
case @"BIN":
Value.Radix = Radix.Bin;
break;
case @"OCT":
Value.Radix = Radix.Oct;
break;
case @"DEC":
Value.Radix = Radix.Dec;
break;
case @"HEX":
Value.Radix = Radix.Hex;
break;
case @"+":
case @"ADD":
PutBinaryOperation(BinaryOperation.Add);
break;
case @"-":
case @"SUB":
PutBinaryOperation(BinaryOperation.Substract);
break;
case @"*":
case @"MUL":
PutBinaryOperation(BinaryOperation.Multiply);
break;
case @"/":
case @"DIV":
PutBinaryOperation(BinaryOperation.Divide);
break;
case @"SGN":
Value.ChangeSign();
break;
case @"=":
case @"RES":
Value = Reduce(Precedence.Assignment);
break;
default:
Debug = string.Format("Key: [{0}]", key);
break;
}
}
private void CreateNewValue(Radix radix)
{
Value = new CalculatorNumber(radix, PrecisionBits);
}
