[fpc-devel] fpc modifiers

[Marco van de Voort]

In our previous episode, Joerg Schuelke said:
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> First i will note that what i state is not an error or bug in free
> pascal, but it is somehow unclean implemented.
> The decision for modifiers like cvar or cdecl to be an <identifier>
> token or an <modifier> token relies on context information. But what is
> that context? An example:
> 
> type
>   name=procedure;   cdecl
    =integer;

The compiler looks for modifier in certain spaces, like after a procedure
declaraction. IOW the compiler reads it like above.
 
> results in an error, but
> 
> type
>   cdecl=integer;
>   name=procedure;
> 
> is correct.
> 
> The procedure type declaration consumes the <cdecl> token regardless of
> the following token.
> There is no need for this. The <=> token can be used as context switch,
> but you?ll need a look ahead of 2 tokens. And that conflicts with the
> LL1 base structure of pascal. What a pity.

No, since modifiers can be in any order, it could be a lot more than two
tokens.