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Expr-arrsub

Make-expr-arrsub

Basic constructor macro for expr-arrsub structures.

Syntax

(make-expr-arrsub [:arr <arr>] 
                  [:sub <sub>])

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

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

Definition

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

Macro: make-expr-arrsub

(defmacro make-expr-arrsub (&rest args)
  (std::make-aggregate 'expr-arrsub
                       args '((:arr) (:sub))
                       'make-expr-arrsub
                       nil))

Function: expr-arrsub

(defun expr-arrsub (arr sub)
  (declare (xargs :guard (and (exprp arr) (exprp sub))))
  (declare (xargs :guard t))
  (let ((__function__ 'expr-arrsub))
    (declare (ignorable __function__))
    (b* ((arr (mbe :logic (expr-fix arr) :exec arr))
         (sub (mbe :logic (expr-fix sub) :exec sub)))
      (cons :arrsub (list arr sub)))))