private void ParseAddExpression()
{
ParseMulExpression();
while (IsNextTokenAddOp())
{
Token addOp = NextToken();
ParseMulExpression();
switch (addOp.Value)
{
case "+":
_codeGenerator.Add();
break;
case "-":
_codeGenerator.Sub();
break;
default:
ThrowCompilationException("Unexpected add operator " + addOp.Value);
break;
}
}
}