public override BigDecimal EvaluateFunction(FuncToken token)
{
if (token is CallerFuncToken)
{
return(parser.FunctionsDict[token.Symbol].Invoke(fallback.EvaluateTokens((token).SubTokens.ToArray())));
}
switch (token.Symbol)
{
case ParserSymbols.Negate:
return(eval(token.SubTokens[0]) * -1);
case ParserSymbols.Rad:
return(eval(token.SubTokens[0]) * Math.PI / 180);
case ParserSymbols.Deg:
return(eval(token.SubTokens[0]) * 180 / Math.PI);
case ParserSymbols.Floor:
return(eval(token.SubTokens[0]).Floor());
case ParserSymbols.Not:
return(eval(token.SubTokens[0]) == 0 ? 1 : 0);
case ParserSymbols.Fact:
var v = eval(token.SubTokens[0]);
if (v < 0 || v % 1 != 0)
{
return(double.NaN);
}
BigDecimal fact = 1;
for (int i = (int)v; i > 0; i--)
{
fact *= i;
}
return(fact);
case ParserSymbols.Cond:
return(eval(token.SubTokens[0]) != 0
? eval(token.SubTokens[1])
: eval(token.SubTokens[2]));
default:
if (Context.Options.StrictMode)
{
throw new UnsupportedOperationException(token.Symbol);
}
double result = token.Evaluate(fallback);
if (double.IsNaN(result))
{
throw new ParserArithmeticException(token.Position);
}
else
{
return((BigDecimal)result);
}
}
}
public override decimal EvaluateFunction(FuncToken token)
{
if (token is CallerFuncToken)
{
return((decimal)parser.FunctionsDict[token.Symbol].Invoke(fallback.EvaluateTokens((token).SubTokens.ToArray())));
}
switch (token.Symbol)
{
case ParserSymbols.Negate:
return(eval(token.SubTokens[0]) * -1);
case ParserSymbols.Rad:
return(eval(token.SubTokens[0]) * (decimal)Math.PI / 180);
case ParserSymbols.Deg:
return(eval(token.SubTokens[0]) * 180 / (decimal)Math.PI);
case ParserSymbols.Ceil:
return(Math.Ceiling(eval(token.SubTokens[0])));
case ParserSymbols.Floor:
return(Math.Floor(eval(token.SubTokens[0])));
case ParserSymbols.Round:
return(Math.Round(eval(token.SubTokens[0])));
case ParserSymbols.Sign:
return(Math.Sign(eval(token.SubTokens[0])));
case ParserSymbols.Trunc:
return(Math.Truncate(eval(token.SubTokens[0])));
case ParserSymbols.Min:
return(EvaluateTokens(token.SubTokens.ToArray()).Min());
case ParserSymbols.Max:
return(EvaluateTokens(token.SubTokens.ToArray()).Max());
case ParserSymbols.Avg:
return(EvaluateTokens(token.SubTokens.ToArray()).Average());
case ParserSymbols.AndFunc:
return(EvaluateTokens(token.SubTokens.ToArray())
.Select(v1 => Convert.ToBoolean(v1))
.Aggregate((v1, v2) => v1 & v2) ? 1 : 0);
case ParserSymbols.OrFunc:
return(EvaluateTokens(token.SubTokens.ToArray())
.Select(v1 => Convert.ToBoolean(v1))
.Aggregate((v1, v2) => v1 | v2) ? 1 : 0);
case ParserSymbols.XorFunc:
return(EvaluateTokens(token.SubTokens.ToArray())
.Select(v1 => Convert.ToBoolean(v1))
.Aggregate((v1, v2) => v1 ^ v2) ? 1 : 0);
case ParserSymbols.Not:
return(!Convert.ToBoolean(eval(token.SubTokens[0])) ? 1 : 0);
case ParserSymbols.Fact:
decimal v = eval(token.SubTokens[0]);
if (v < 0 || v % 1 != 0)
{
throw new ParserArithmeticException(token.Position);
}
decimal fact = 1;
for (int i = (int)v; i > 0; i--)
{
fact *= i;
}
return(fact);
case ParserSymbols.Cond:
return(Convert.ToBoolean(eval(token.SubTokens[0]))
? eval(token.SubTokens[1])
: eval(token.SubTokens[2]));
default:
if (Context.Options.StrictMode)
{
throw new UnsupportedOperationException(token.Symbol);
}
double result = token.Evaluate(fallback);
if (double.IsNaN(result))
{
throw new ParserArithmeticException(token.Position);
}
else
{
return((decimal)result);
}
}
}