Function: gv-letplace

gv-letplace is an autoloaded macro defined in gv.el.gz.

Signature

(gv-letplace (GETTER SETTER) PLACE &rest BODY)

Documentation

Build the code manipulating the generalized variable PLACE.

GETTER will be bound to a copyable expression that returns the value of PLACE. SETTER will be bound to a function that takes an expression V and returns a new expression that sets PLACE to V. BODY should return some Elisp expression E manipulating PLACE via GETTER and SETTER. The returned value will then be an Elisp expression that first evaluates all the parts of PLACE that can be evaluated and then runs E.

Probably introduced at or before Emacs version 24.3.

Source Code

;; Defined in /usr/src/emacs/lisp/emacs-lisp/gv.el.gz
;;;###autoload
(defmacro gv-letplace (vars place &rest body)
  "Build the code manipulating the generalized variable PLACE.
GETTER will be bound to a copyable expression that returns the value
of PLACE.
SETTER will be bound to a function that takes an expression V and returns
a new expression that sets PLACE to V.
BODY should return some Elisp expression E manipulating PLACE via GETTER
and SETTER.
The returned value will then be an Elisp expression that first evaluates
all the parts of PLACE that can be evaluated and then runs E.

\(fn (GETTER SETTER) PLACE &rest BODY)"
  (declare (indent 2) (debug (sexp form def-body)))
  `(gv-get ,place (lambda ,vars ,@body)))