public ExpAtom(string source, ExpAtomType type)
{
_type = type;
_value = EDecimal.NaN;
_operation = OperationType.None;
if (ExpAtomType.Numeric == type)
{
try {
_value = EDecimal.FromString(source);
} catch {
_type = ExpAtomType.None;
}
}
else if (1 != source.Length)
{
_type = ExpAtomType.None;
}
else
{
switch (source[0])
{
case '+': _operation = OperationType.Addition; break;
case '-': _operation = OperationType.Substraction; break;
case '/': _operation = OperationType.Division; break;
case '*': _operation = OperationType.Multiplication; break;
default: _operation = OperationType.None; _type = ExpAtomType.None; break;
}
}
}
public ExpAtom(EDecimal value)
{
_type = ExpAtomType.Numeric;
_value = value;
_operation = OperationType.None;
}