;; Copyright 2025 ;; Kaz Kylheku ;; Vancouver, Canada ;; All rights reserved. ;; ;; Redistribution and use in source and binary forms, with or without ;; modification, are permitted provided that the following conditions are met: ;; ;; 1. Redistributions of source code must retain the above copyright notice, ;; this list of conditions and the following disclaimer. ;; ;; 2. Redistributions in binary form must reproduce the above copyright notice, ;; this list of conditions and the following disclaimer in the documentation ;; and/or other materials provided with the distribution. ;; ;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" ;; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE ;; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ;; ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE ;; LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR ;; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF ;; SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS ;; INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN ;; CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ;; ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE ;; POSSIBILITY OF SUCH DAMAGE. (defun normalize-enum-pairs (f enum-pairs) (let ((n 0)) (keep-matches (@(or (@sym @init) @(with @sym init n)) enum-pairs) (unless (bindable sym) (compile-error f "~s isn't a bindable symbol" sym)) (unless (or (integerp init) (chrp init)) (compile-error f "~s must be an integer or character" init)) (set n (succ init)) ^(,sym ,init)))) (defmacro defenum (:form f . enum-pairs) (let ((nep (normalize-enum-pairs f enum-pairs))) ^(progn ,*(mapcar (op cons 'defsymacro) nep)))) (defmacro enumlet (:form f enum-pairs . body) (let ((nep (normalize-enum-pairs f enum-pairs))) ^(symacrolet ,nep ,*body)))