matcher: factor out vars into common base.

* share/txr/stdlib/match.tl (match-vars): New struct.
Holds vars and expressions, and provides the method to
zipper them up into the assignments.
(match-guard, compiled-match): Inherit from match vars.
match-guard loses temps and temp-exprs. It now has
vars and var-exprs from the base and those are used
instead.
(compiled-match get-temps): Follow temps vars rename.
(compiled-match wrap-guards): Use assignments method
inherited from base instead of assignments function.
(assignments): Function removed.
(compile-struct-match, compile-vec-match,
compile-cons-structure): Follow vars temps rename in
match-guard struct.
(when-mach): Use assignments method of compiled-match instead
of assignments function.

0 files changed, 0 insertions, 0 deletions