protected void PutOperation(IRPNCalculator calc)
{
if (calc.IsCalculating)
{
return;
}
var stack = calc.RPNStack;
if (stack.Count == 0)
{
stack.Push(Symbol);
return;
}
var currentOperation = calc.Operations[stack.Peek()];
if (currentOperation == null)
{
return;
}
if (currentOperation.Priority < Priority)
{
stack.Push(Symbol);
}
else
{
for (var op = calc.Operations[stack.Peek()]; stack.Count > 0 && op != null && op.Priority >= Priority; calc.RPNResult += stack.Pop())
{
;
}
stack.Push(Symbol);
}
}
public override void Execute(IRPNCalculator calc)
{
base.Execute(calc);
if (calc == null || calc.CalcStack.Count < 2)
{
return;
}
calc.CalcStack.Push(calc.CalcStack.Pop() * calc.CalcStack.Pop());
}
static void Main(string[] args)
{
IRPNCalculator calc = (IRPNCalculator) new RPNCalculator();
calc.Push(10);
calc.Push(20);
calc.Add();
Console.WriteLine(calc.Pop());
}
public void Execute(IRPNCalculator calc)
{
// Выталкнуть все операции до открывающей скобки в выходную строку
while (calc.RPNStack.Peek() != '(')
{
calc.RPNResult += calc.RPNStack.Pop();
}
// Удаляет открывающую скобку
calc.RPNStack.Pop();
}
public override void Execute(IRPNCalculator calc)
{
base.Execute(calc);
if (calc == null || calc.CalcStack.Count < 2)
{
return;
}
var val = calc.CalcStack.Pop() + calc.CalcStack.Pop();
calc.CalcStack.Push(val);
}
public override void Execute(IRPNCalculator calc)
{
base.Execute(calc);
if (calc == null || calc.CalcStack.Count < 2)
{
return;
}
var val1 = calc.CalcStack.Pop();
var val2 = calc.CalcStack.Pop();
if (val1 == 0)
{
calc.CalcStack.Push(0);
}
else
{
calc.CalcStack.Push(val2 / val1);
}
}
public void Execute(IRPNCalculator calc)
{
calc.RPNStack.Push(Symbol);
}
public virtual void Execute(IRPNCalculator irpnCalculator)
{
PutOperation(irpnCalculator);
}
