Re: Object Oriented Compiler Design Problem

Mayur Naik wrote:
> I want a suitable Object Oriented Solution to this problem. I want to > avoid the solution using 'a union with a type field'.


You can do this:


                class symbol {
virtual bool canBeComputedAtCompileTime() const = 0;
//...
};


class variable : public symbol {
virtual bool canBeComputedAtCompileTime() const
{
return false;
}
//...
};


class constant : public symbol {
                                int val;
virtual bool canBeComputedAtCompileTime() const
{
return true;
}
                                // ...
                };




symbol* add(symbol *a, symbol *b)
{
if(
a->canBeComputedAtCompileTime() && b->canBeComputedAtCompileTime()
)
{
// I dont have to generate Intermediate Code
}
else
{
// I have to generate Intermediate Code
}
}




I hope it helps.




Jucie Dias Andrade
São Paulo - Brazil


(Excuse my poor English, that's not my native language. Need I a
compiler?)
--

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