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Statement-decrement

Make-statement-decrement

Basic constructor macro for statement-decrement structures.

Syntax

(make-statement-decrement [:mapping <mapping>] 
                          [:index <index>] 
                          [:amount <amount>])

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

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

Definition

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

Macro: make-statement-decrement

(defmacro make-statement-decrement (&rest args)
  (std::make-aggregate 'statement-decrement
                       args '((:mapping) (:index) (:amount))
                       'make-statement-decrement
                       nil))

Function: statement-decrement

(defun statement-decrement (mapping index amount)
  (declare (xargs :guard (and (identifierp mapping)
                              (expressionp index)
                              (expressionp amount))))
  (declare (xargs :guard t))
  (let ((__function__ 'statement-decrement))
    (declare (ignorable __function__))
    (b* ((mapping (mbe :logic (identifier-fix mapping)
                       :exec mapping))
         (index (mbe :logic (expression-fix index)
                     :exec index))
         (amount (mbe :logic (expression-fix amount)
                      :exec amount)))
      (cons :decrement (list mapping index amount)))))