Hi,
On Sun, 12 Dec 1999, Lars Skovlund wrote:
[Said()]
> The following is a reconstruction of the said spec syntax in BNF-like
> notation:
[...]
There is no mention of the '&' and '#' tokens (0xf1/0xf7). OTOH, I don't
recall # being used in any of the Said specs I saw...
How are they treated by SCI?
> Each "lexeme" (well, most of them) is added to the tree for later use by the
> second phase of Said(). This is done by a process called "augmenting" the
> tree. The augmentation process joins a sub-expression with the main tree,
> adding two descriptive storage codes. The result of an augmentation is
> sketched below:
>
> (parent node in main tree)
> / \
> / \
> (not assigned) tree node
> /
> /
> tree node
> / \
> / \
> nodeval1 (beginning of subtree)
> /
> /
> nodeval2
So it could also be interpreted as a singly linked list with one optional
value per node?
> The right branch of the subtree, of course, contains the subtree information.
> Below is a listing of the storage codes used for the augmentation in various
> places. The names I use correspond to the yacc representation above:
>
> Lexeme nodeval1 nodeval2 comments
>
> MainExp/Wordgroup 0x141 0x153 **
Where's ** and where do they store word groups? :-)
Anyway, thanks a lot- I guess that it took quite a while to gather and
compile all this information.
llap,
Christoph
