public override string ToString()
{
FunctionAttribute funcAttrib = (FunctionAttribute)Attribute.GetCustomAttribute(this.GetType(), typeof(FunctionAttribute));
return(funcAttrib.FunctionName);
}
public void RegisterFunction(Type funcType)
{
FunctionAttribute funcAttrib = (FunctionAttribute)Attribute.GetCustomAttribute(funcType, typeof(FunctionAttribute));
functionList.Add(funcAttrib.FunctionName.ToUpper(), funcType);
}
public object Exec()
{
double tempDouble;
object ret = "";
int i = 0;
double a = 0;
double b = 0;
bool a1 = true;
bool b1 = true;
string tok = string.Empty;
//Go though the tokens
al = new Stack <object>();
int x = 0;
while (i < Tokens.Count)
{
tok = Tokens[i].sToken;
switch (Tokens[i].sType)
{
case RPNTokenType.NONE:
break;
case RPNTokenType.BOOL:
if (tok.ToLower().Equals("true"))
{
al.Push(true);
break;
}
else
{
al.Push(false);
break;
}
break;
case RPNTokenType.ALPHA:
if (vars.TryGetValue(tok, out RPNArguments arg))
{
a = arg.value;
al.Push(a);
}
else
{
throw new Exception($"Value [{tok}] not exists");
}
break;
case RPNTokenType.NUMBER:
tempDouble = 0;
RPNUtils.TryToDouble(tok, out tempDouble);
al.Push(tempDouble);
break;
case RPNTokenType.STRING:
al.Push(tok.Substring(1, tok.Length - 2));
break;
case RPNTokenType.FUNCTION:
if (Environment != null)
{
#if DEBUG
String argumentList = "";
#endif
String funcName = Tokens[i].sToken;
funcName = funcName.Substring(0, funcName.Length - 1);
var func = Environment.FindFunction(funcName);
if (func != null)
{
FunctionAttribute funcAttrib = (FunctionAttribute)Attribute.GetCustomAttribute(func.GetType(), typeof(FunctionAttribute));
List <object> arguments = new List <object>();
if (funcAttrib.ParamTypes != null && funcAttrib.ParamTypes.Length > 0)
{
foreach (var paramType in funcAttrib.ParamTypes)
{
object obj = al.Pop();
func.Params.Add(obj);
#if DEBUG
argumentList += " ";
argumentList += obj.ToString();
#endif
}
}
object retObject = func.Calc();
al.Push(retObject);
#if DEBUG
Console.WriteLine($"Function , {funcName}({argumentList}) = {retObject.ToString()}");
#endif
// al.Push(r);
}
}
break;
case RPNTokenType.OPERAND:
object r = 0;
switch (Tokens[i].Operation)
{
case RPNOperandType.JUSTPLUS:
a = Convert.ToDouble(al.Pop());
r = +a;
#if DEBUG
Console.WriteLine($"JustPlus , {r} = {a.ToString()}");
#endif
break;
case RPNOperandType.PLUS:
a = Convert.ToDouble(al.Pop());
var b11 = al.Pop();
if (b11 is DateTime)
{
DateTime dDateTime = (DateTime)b11;
r = dDateTime.AddHours(a);
}
else
{
b = Convert.ToDouble(b11);
r = a + b;
}
#if DEBUG
Console.WriteLine($"{b.ToString()} + {a.ToString()} = {r.ToString()}");
#endif
break;
case RPNOperandType.JUSTMINUS:
a = Convert.ToDouble(al.Pop());
r = -a;
break;
case RPNOperandType.MINUS:
var t = al.Pop();
a = Convert.ToDouble(t);
var b12 = al.Pop();
if (b12 is DateTime)
{
DateTime dDateTime = (DateTime)b12;
r = dDateTime.AddHours(-a);
}
else
{
b = Convert.ToDouble(b12);
r = b - a;
}
#if DEBUG
Console.WriteLine($"{b} - {a} = {r}");
#endif
break;
case RPNOperandType.MULITIPLY:
a = Convert.ToDouble(al.Pop());
b = Convert.ToDouble(al.Pop());
r = a * b;
#if DEBUG
Console.WriteLine($"{b} * {a} = {r}");
#endif
break;
case RPNOperandType.DIVIDE:
a = Convert.ToDouble(al.Pop());
b = Convert.ToDouble(al.Pop());
r = (b / a);
#if DEBUG
Console.WriteLine($"{b} / {a} = {r}");
#endif
break;
case RPNOperandType.EXPONENTIATION:
a = Convert.ToDouble(al.Pop());
b = Convert.ToDouble(al.Pop());
r = Math.Pow(b, a);
#if DEBUG
Console.WriteLine($"{b} ^ {a} = {r}");
#endif
break;
case RPNOperandType.DIV: // "/="
a = Convert.ToDouble(al.Pop());
b = Convert.ToDouble(al.Pop());
r = (b / a);
#if DEBUG
Console.WriteLine($"{b} /= {a} = {r}");
#endif
break;
case RPNOperandType.MOD: //"%=",
a = Convert.ToDouble(al.Pop());
b = Convert.ToDouble(al.Pop());
r = (b %= a);
#if DEBUG
Console.WriteLine($"{b} %= {a} = {r}");
#endif
break;
case RPNOperandType.LESS: //"<",
a = Convert.ToDouble(al.Pop());
b = Convert.ToDouble(al.Pop());
r = (b < a);
#if DEBUG
Console.WriteLine($"{b} < {a} = {r}");
#endif
break;
case RPNOperandType.GREATER: //">",
a = Convert.ToDouble(al.Pop());
b = Convert.ToDouble(al.Pop());
r = (b > a);
#if DEBUG
Console.WriteLine($"{b} > {a} = {r}");
#endif
break;
case RPNOperandType.LESSOREQUAL: //"<=",
a = Convert.ToDouble(al.Pop());
b = Convert.ToDouble(al.Pop());
r = (b <= a);
#if DEBUG
Console.WriteLine($"{b} <= {a} = {r}");
#endif
break;
case RPNOperandType.GREATEOREQUAL: //">=",
a = Convert.ToDouble(al.Pop());
b = Convert.ToDouble(al.Pop());
r = (b >= a);
#if DEBUG
Console.WriteLine($"{b} >={a} = {r}");
#endif
break;
case RPNOperandType.NOTEQUAL: //"!=",
a = Convert.ToDouble(al.Pop());
b = Convert.ToDouble(al.Pop());
r = (b != a);
#if DEBUG
Console.WriteLine($"{b} !={a} = {r}");
#endif
break;
case RPNOperandType.EQUAL: //"=="
a = Convert.ToDouble(al.Pop());
b = Convert.ToDouble(al.Pop());
r = (b == a);
#if DEBUG
Console.WriteLine($"{b} =={a} = {r}");
#endif
break;
case RPNOperandType.OR: //"||",
a1 = Convert.ToBoolean(al.Pop());
b1 = Convert.ToBoolean(al.Pop());
r = (b1 || a1);
#if DEBUG
Console.WriteLine($"{b1} || {a1} = {r}");
#endif
break;
case RPNOperandType.AND: //"&&",
a1 = Convert.ToBoolean(al.Pop());
b1 = Convert.ToBoolean(al.Pop());
r = (b1 && a1);
#if DEBUG
Console.WriteLine($"{b1} && {a1} = {r}");
#endif
break;
case RPNOperandType.NOT: //"!",
a1 = Convert.ToBoolean(al.Pop());
r = (!a1);
#if DEBUG
Console.WriteLine($" !{a1} = {r}");
#endif
break;
}
al.Push(r);
break;
}
i++;
}
while (x < al.Count)
{
ret = al.Pop();
}
return(ret);
}