private static bool SatisfyCalcCondition(
Func <Expression, Expression, BinaryExpression> func,
object x, object y, out object output)
{
output = null;
if (func.Method.Name.Equals("Divide"))
{
return(false);
}
if (LogicSharp.IsNumeric(x) && LogicSharp.IsNumeric(y))
{
double xDoubleVal;
double yDoubleVal;
bool isXDouble = LogicSharp.IsDouble(x, out xDoubleVal);
bool isYDouble = LogicSharp.IsDouble(y, out yDoubleVal);
if (isXDouble || isYDouble)
{
var xExpr = Expression.Constant(xDoubleVal);
var yExpr = Expression.Constant(yDoubleVal);
var rExpr = func(xExpr, yExpr);
output = Expression.Lambda <Func <double> >(rExpr).Compile().Invoke();
int iResult;
if (LogicSharp.IsInt(output, out iResult))
{
output = iResult;
return(true);
}
return(true);
}
}
return(false);
}
public static object Calculate(Func <Expression, Expression, BinaryExpression> func,
object x, object y)
{
double xDoubleVal;
double yDoubleVal;
bool isXDouble = LogicSharp.IsDouble(x, out xDoubleVal);
bool isYDouble = LogicSharp.IsDouble(y, out yDoubleVal);
if (isXDouble || isYDouble)
{
var xExpr = Expression.Constant(xDoubleVal);
var yExpr = Expression.Constant(yDoubleVal);
var rExpr = func(xExpr, yExpr);
var result = Expression.Lambda <Func <double> >(rExpr).Compile().Invoke();
int iResult;
if (LogicSharp.IsInt(result, out iResult))
{
return(iResult);
}
else
{
return(result);
}
}
else
{
return(null);
}
}
public override string ToString()
{
double dNum;
bool isNum = LogicSharp.IsDouble(Rhs, out dNum);
if (isNum)
{
int iNum;
bool isInteger = LogicSharp.IsInt(Rhs, out iNum);
if (isInteger)
{
return(base.ToString());
}
double roundD = Math.Round(dNum, 4);
return(string.Format("{0}={1}", Lhs, roundD));
}
return(base.ToString());
}
