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Expr-unary

Make-expr-unary

Basic constructor macro for expr-unary structures.

Syntax

(make-expr-unary [:op <op>] 
                 [:arg <arg>])

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

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

Definition

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

Macro: make-expr-unary

(defmacro make-expr-unary (&rest args)
  (std::make-aggregate 'expr-unary
                       args '((:op) (:arg))
                       'make-expr-unary
                       nil))

Function: expr-unary

(defun expr-unary (op arg)
  (declare (xargs :guard (and (unopp op) (exprp arg))))
  (declare (xargs :guard t))
  (let ((__function__ 'expr-unary))
    (declare (ignorable __function__))
    (b* ((op (mbe :logic (unop-fix op) :exec op))
         (arg (mbe :logic (expr-fix arg) :exec arg)))
      (cons :unary (list op arg)))))