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Repetition

Make-repetition

Basic constructor macro for repetition structures.

Syntax

(make-repetition [:range <range>] 
                 [:element <element>])

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

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

Definition

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

Macro: make-repetition

(defmacro make-repetition (&rest args)
  (std::make-aggregate 'repetition
                       args '((:range) (:element))
                       'make-repetition
                       nil))

Function: repetition

(defun repetition (range element)
  (declare (xargs :guard (and (repeat-rangep range)
                              (elementp element))))
  (declare (xargs :guard t))
  (let ((__function__ 'repetition))
    (declare (ignorable __function__))
    (b* ((range (mbe :logic (repeat-range-fix range)
                     :exec range))
         (element (mbe :logic (element-fix element)
                       :exec element)))
      (cons :repetition (list range element)))))