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Label-casexpr

Make-label-casexpr

Basic constructor macro for label-casexpr structures.

Syntax

(make-label-casexpr [:expr <expr>] 
                    [:range? <range?>])

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

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

Definition

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

Macro: make-label-casexpr

(defmacro make-label-casexpr (&rest args)
  (std::make-aggregate 'label-casexpr
                       args '((:expr) (:range?))
                       'make-label-casexpr
                       nil))

Function: label-casexpr

(defun label-casexpr (expr range?)
  (declare (xargs :guard (and (const-exprp expr)
                              (const-expr-optionp range?))))
  (declare (xargs :guard t))
  (b* ((expr (mbe :logic (const-expr-fix expr)
                  :exec expr))
       (range? (mbe :logic (const-expr-option-fix range?)
                    :exec range?)))
    (cons :casexpr (cons expr range?))))