public object Evaluate(string expression,
CalcMode calMode,
IntegerBits intBits,
IntegerFormat intFmt)
{
Expression.CurCalcMode = calMode;
Expression.CurIntBits = intBits;
Expression.CurIntFmt = intFmt;
var x = _cache != null
? _cache[expression]
: Parse(expression);
return Token.FormatValue(x.Evaluate(), calMode, intBits, intFmt);
}
public Object Eva(String str, CalcMode calcMode, IntegerFormat fmt, IntegerBits numBits, bool updateAnswer)
{
Int64 result = 0;
if (str.Length < 1)
return false;
try
{
m_numFmt = fmt;
switch (fmt)
{
case IntegerFormat.DEC:
Object obj = m_calcEngine.Evaluate(str, calcMode, numBits, fmt);
if (obj != null && updateAnswer)
{
if (m_calcEngine.Variables.ContainsKey("ans"))
UpdateVariable("ans", obj);
else
AddVariable("ans", obj);
}
return obj;
case IntegerFormat.HEX:
return Int64.Parse(str, System.Globalization.NumberStyles.HexNumber);
case IntegerFormat.BIN:
if (ParseBinStr(str, ref result))
return result;
else
throw new ArgumentException();
default:
return null;
}
}
catch (Exception _ex)
{
throw _ex;
}
}
public static object FormatValue(object val,
CalcMode calcMode,
IntegerBits intBits,
IntegerFormat intFmt)
{
double v;
if (val is string)
return val;
if (val is double)
{
v = (double)val;
}
// handle booleans
if (val is bool)
{
v = 1.0;
}
// handle nulls
if (val == null)
{
v = 0;
}
// handle everything else
v = (double)Convert.ChangeType(val, typeof(double));
if (calcMode == CalcMode.FLOAT)
{
return (double)v;
}
else if (calcMode == CalcMode.INTEGER_SIGNED)
{
if (intBits == IntegerBits.BITS_64)
{
return (Int64)v;
}
else if (intBits == IntegerBits.BITS_32)
{
return (Int32)v;
}
else if (intBits == IntegerBits.BITS_16)
{
return (Int16)v;
}
else if (intBits == IntegerBits.BITS_8)
{
return (SByte)v;
}
else
{
throw new Exception("Invalid Integer Bits");
}
}
else if (calcMode == CalcMode.INTEGER_UNSIGNED)
{
if (intBits == IntegerBits.BITS_64)
{
return (UInt64)v;
}
else if (intBits == IntegerBits.BITS_32)
{
return (UInt32)v;
}
else if (intBits == IntegerBits.BITS_16)
{
return (UInt16)v;
}
else if (intBits == IntegerBits.BITS_8)
{
return (Byte)v;
}
else
{
throw new Exception("Invalid Integer Bits");
}
}
else
{
throw new Exception("Invalid Calculate Mode");
}
}