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Expr-cast

Make-expr-cast

Basic constructor macro for expr-cast structures.

Syntax

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

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

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

Definition

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

Macro: make-expr-cast

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

Function: expr-cast

(defun expr-cast (type arg)
  (declare (xargs :guard (and (tynamep type) (exprp arg))))
  (declare (xargs :guard t))
  (let ((__function__ 'expr-cast))
    (declare (ignorable __function__))
    (b* ((type (mbe :logic (tyname-fix type)
                    :exec type))
         (arg (mbe :logic (expr-fix arg) :exec arg)))
      (cons :cast (list type arg)))))