// TermRhs: MultDivOperator Factor TermRhs
private void MatchExprMultDiv(out IExpr result)
{
TokenTypes t; // remember the type
IExpr lhs;
MatchExprExp(out lhs);
result = lhs; // in case we get no matches
while ((t = curToken.Type) == TokenTypes.FORWARDSLASH ||
t == TokenTypes.STAR ||
t == TokenTypes.MODULUS)
{
curToken = tokens.Extract();
IExpr rhs;
MatchExprExp(out rhs);
bool bDecimal = (rhs.GetTypeCode() == TypeCode.Decimal &&
lhs.GetTypeCode() == TypeCode.Decimal);
switch (t)
{
case TokenTypes.FORWARDSLASH:
if (bDecimal)
{
result = new FunctionDivDecimal(lhs, rhs);
}
else
{
result = new FunctionDiv(lhs, rhs);
}
break;
case TokenTypes.STAR:
if (bDecimal)
{
result = new FunctionMultDecimal(lhs, rhs);
}
else
{
result = new FunctionMult(lhs, rhs);
}
break;
case TokenTypes.MODULUS:
result = new FunctionModulus(lhs, rhs);
break;
}
lhs = result; // in case continue in the loop
}
}
// TermRhs: MultDivOperator Factor TermRhs
private void MatchExprMultDiv(out IExpr result)
{
TokenTypes t; // remember the type
IExpr lhs;
MatchExprExp(out lhs);
result = lhs; // in case we get no matches
while ((t = curToken.Type) == TokenTypes.FORWARDSLASH ||
t == TokenTypes.STAR ||
t == TokenTypes.MODULUS)
{
curToken = tokens.Extract();
IExpr rhs;
MatchExprExp(out rhs);
bool bDecimal = (rhs.GetTypeCode() == TypeCode.Decimal &&
lhs.GetTypeCode() == TypeCode.Decimal);
switch (t)
{
case TokenTypes.FORWARDSLASH:
if (bDecimal)
result = new FunctionDivDecimal(lhs, rhs);
else
result = new FunctionDiv(lhs, rhs);
break;
case TokenTypes.STAR:
if (bDecimal)
result = new FunctionMultDecimal(lhs, rhs);
else
result = new FunctionMult(lhs, rhs);
break;
case TokenTypes.MODULUS:
result = new FunctionModulus(lhs, rhs);
break;
}
lhs = result; // in case continue in the loop
}
}