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Branch

Make-branch

Basic constructor macro for branch structures.

Syntax

(make-branch [:test <test>] 
             [:body <body>])

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

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

Definition

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

Macro: make-branch

(defmacro make-branch (&rest args)
  (std::make-aggregate 'branch
                       args '((:test) (:body))
                       'make-branch
                       nil))

Function: branch

(defun branch (test body)
  (declare (xargs :guard (and (expressionp test)
                              (statement-listp body))))
  (declare (xargs :guard t))
  (let ((__function__ 'branch))
    (declare (ignorable __function__))
    (b* ((test (mbe :logic (expression-fix test)
                    :exec test))
         (body (mbe :logic (statement-list-fix body)
                    :exec body)))
      (list (cons 'test test)
            (cons 'body body)))))