Re: Parsing Questions

"Michael J. Fromberger" <sting@linguist.dartmouth.edu> wrote
> "Stefan Ewing" <sewing@uvic.ca> writes:
>
> >Also, how should one represent the Java field access operator (.) in
> >a parse tree? At first glance, it seems like a binary operator to me
> >(given the object name and the field name, a memory address is
> >returned), but one operator precedence chart I saw online shows . as
> >a unary operator.
>
> Where were you looking?


Well, after being unable to find the information I needed at Sun's own
site, I used Google to find tables giving the precedence of operators
in Java, located at various other sites. One such table (the URL is
http://www.csc.calpoly.edu/~csc101/studynotes/JavaOperators.htm )
classified the operators as unary, binary, or ternary, with the dot
operator being placed under in the "unary" column. Of course, the
table is for a freshman Computer Science course--as opposed to one in
context-free grammars or compiler writing--and I do not know what the
source of the author's information was (the author being an instructor
at Cal Poly), so I can't necessarily rely upon the information.


I have since found a table at the Sun Java site (
http://java.sun.com/docs/books/tutorial/java/nutsandbolts/opsummary.html
) which implicitly denotes the field access operator as binary (which
makes more sense to me).


Stefan Ewing

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