Re: Trouble implementing a standard library -- Calling C functions from within my language

noitalmost schrieb:


> And then have
> class CCall : public Expr
> {
> CCall(string name, vector<Expr*> params);
> string genC();
> ...
> }
>
> where, Expr is a AstNode. But CCall::genC() would be a really
> complicated list of special cases.


Right now I see a problem with Expr (lval), when the C function
expects an pointer (rval). This should be handled at least for
variables, i.e. Expr should include an hint on whether it *is* an
lval. When you produce C code, your data types already should match
the C definitions, else another transformation may be required for
passing parameters back and forth. All that should be built into Expr,
or a DataType member of Expr.


DoDi

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