1 files changed, 0 insertions, 65 deletions
diff --git a/pnm/private/checker.scm b/pnm/private/checker.scm
deleted file mode 100644
index e212948..0000000
--- a/pnm/private/checker.scm
+++ /dev/null
@@ -1,65 +0,0 @@
-;;; R7RS-PNM --- Library for reading and writing PNM (Portable Any Map) files for R7RS
-;;; Copyright © 2024 Masaya Tojo <masaya@tojo.tokyo>
-;;;
-;;; This file is part of R7RS-PNM.
-;;;
-;;; R7RS-PNM is free software: you can redistribute it and/or modify it
-;;; under the terms of the GNU Lesser General Public License as published
-;;; by the Free Software Foundation, either version 3 of the License, or
-;;; (at your option) any later version.
-;;;
-;;; R7RS-PNM is distributed in the hope that it will be useful, but
-;;; WITHOUT ANY WARRANTY; without even the implied warranty of
-;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;;; GNU Lesser General Public License for more details.
-;;;
-;;; You should have received a copy of the GNU Lesser General Public License
-;;; along with R7RS-PNM. If not, see <https://www.gnu.org/licenses/>.
-
-(define-library (pnm private checker)
-  (export make-xy-checker
-          make-value-checker
-          make-boolean-value-checker)
-  (import (scheme base)
-          (scheme case-lambda)
-          (pnm image))
-  (begin
-    (define (make-xy-checker width height)
-      (lambda (x y)
-        (when (or (not (exact-integer? x))
-                  (< x 0)
-                  (<= width x))
-          (error (string-append  "`x` must be an integer such that 0 <= `x` < "
-                                 (number->string width))
-                 x))
-        (when (and (not (exact-integer? y))
-                   (< y 0)
-                   (<= height y))
-          (error (string-append  "`y` must be an integer such that 0 <= `y` < "
-                                 (number->string width))
-                 y))))
-
-    (define (make-value-checker maxval sym)
-      (define message
-        (string-append "`" (symbol->string sym) "`"
-                       " must be an integer such that 0 < "
-                       "`" (symbol->string sym) "`"
-                       " < "
-                       (number->string maxval)))
-      (lambda (v)
-        (when (or (not (exact-integer? v))
-                  (< v 0)
-                  (< maxval v))
-          (error message v))))
-
-    (define (make-boolean-value-checker)
-      (lambda (v)
-        (when (not (boolean? v))
-          (error "`v` must be a boolean value" v))))
-
-    (define (split-value v)
-      (values (modulo (quotient v 256) 256)
-              (modulo v 256)))
-
-    (define (combine-values l r)
-      (+ (* 256 l) r))))