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Expr-cond

Make-expr-cond

Basic constructor macro for expr-cond structures.

Syntax

(make-expr-cond [:test <test>] 
                [:then <then>] 
                [:else <else>])

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

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

Definition

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

Macro: make-expr-cond

(defmacro make-expr-cond (&rest args)
  (std::make-aggregate 'expr-cond
                       args '((:test) (:then) (:else))
                       'make-expr-cond
                       nil))

Function: expr-cond

(defun expr-cond (test then else)
  (declare (xargs :guard (and (exprp test)
                              (exprp then)
                              (exprp else))))
  (declare (xargs :guard t))
  (let ((__function__ 'expr-cond))
    (declare (ignorable __function__))
    (b* ((test (mbe :logic (expr-fix test) :exec test))
         (then (mbe :logic (expr-fix then) :exec then))
         (else (mbe :logic (expr-fix else)
                    :exec else)))
      (cons :cond (list test then else)))))