// [Lhs / Rhs] / number
public override ASTNode TryDivide(ASTNode number)
{
if (Lhs.IsNumeric)
{
// [Lhs / Rhs] / number --> [Lhs / number] / Rhs
return(new ASTQuotient(new ASTQuotient(Lhs, number), Rhs));
}
if (Rhs.IsNumeric)
{
// [Lhs / Rhs] / number --> Lhs / [Rhs * number]
ASTNode product = new ASTParenthesized(new ASTProduct(Rhs, number));
ASTNode normalized = Lhs.TryDivide(product);
return((normalized != null) ? normalized : new ASTQuotient(Lhs, product));
}
return(null);
}
// [Lhs / Rhs] * number
public override ASTNode TryMultiply(ASTNode number)
{
if (Lhs.IsNumeric)
{
// [Lhs / Rhs] * number --> [Lhs * number] / Rhs
return(new ASTQuotient(new ASTProduct(Lhs, number), Rhs));
}
else if (Rhs.IsNumeric)
{
// [Lhs / Rhs] * number --> Lhs * [number / Rhs]
ASTNode quotient = new ASTQuotient(number, Rhs);
ASTNode normalized = Lhs.TryDivide(quotient);
return((normalized != null) ? normalized : new ASTQuotient(Lhs, quotient));
}
return(null);
}
public override ASTNode TryNormalize()
{
return(Rhs.IsNumeric ? Lhs.TryDivide(Rhs) : null);
}