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Jexpr-cast

Make-jexpr-cast

Basic constructor macro for jexpr-cast structures.

Syntax

(make-jexpr-cast [:type <type>] 
                 [:arg <arg>])

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

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

Definition

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

Macro: make-jexpr-cast

(defmacro make-jexpr-cast (&rest args)
  (std::make-aggregate 'jexpr-cast
                       args '((:type) (:arg))
                       'make-jexpr-cast
                       nil))

Function: jexpr-cast

(defun jexpr-cast (type arg)
  (declare (xargs :guard (and (jtypep type) (jexprp arg))))
  (declare (xargs :guard t))
  (let ((__function__ 'jexpr-cast))
    (declare (ignorable __function__))
    (b* ((type (mbe :logic (jtype-fix type)
                    :exec type))
         (arg (mbe :logic (jexpr-fix arg) :exec arg)))
      (cons :cast (list type arg)))))