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Frame

Make-frame

Basic constructor macro for frame structures.

Syntax

(make-frame [:term <term>] 
            [:binding <binding>])

This is the usual way to construct frame structures. It simply conses together a structure with the specified fields.

This macro generates a new frame structure from scratch. See also change-frame, which can "change" an existing structure, instead.

Definition

This is an ordinary make- macro introduced by fty::defprod.

Macro: make-frame

(defmacro make-frame (&rest args)
  (std::make-aggregate 'frame
                       args '((:term) (:binding))
                       'make-frame
                       nil))

Function: frame

(defun frame (term binding)
  (declare (xargs :guard (and (ttermp term) (bindingp binding))))
  (declare (xargs :guard t))
  (let ((__function__ 'frame))
    (declare (ignorable __function__))
    (b* ((term (mbe :logic (tterm-fix term)
                    :exec term))
         (binding (mbe :logic (binding-fix binding)
                       :exec binding)))
      (cons :frame (list term binding)))))