From e660a7ad3a6e0412b7e3ab330a9eb7607b5b45f8 Mon Sep 17 00:00:00 2001
From: digikar <shubhamkarayare@gmail.com>
Date: Tue, 23 Apr 2024 08:36:00 +0530
Subject: [PATCH] [change] readtable-case is :invert or :preserve: don't
 lispify names

---
 src/arg-list.lisp      | 45 ++++++++++++++++++++++++++++++++++++------
 src/import-export.lisp |  4 +++-
 2 files changed, 42 insertions(+), 7 deletions(-)

diff --git a/src/arg-list.lisp b/src/arg-list.lisp
index 573ab1c..19ecbfa 100644
--- a/src/arg-list.lisp
+++ b/src/arg-list.lisp
@@ -27,20 +27,53 @@
     (destructuring-bind (word . rem-chars) (collect-first-word char-list)
       (cons word (break-into-words rem-chars)))))
 
+(defun upper-case-string-p (string)
+  (declare (optimize speed))
+  (every (lambda (char)
+           (or (not (alpha-char-p char))
+               (upper-case-p char)))
+         string))
+
+(defun lower-case-string-p (string)
+  (declare (optimize speed))
+  (every (lambda (char)
+           (or (not (alpha-char-p char))
+               (lower-case-p char)))
+         string))
+
 (declaim (ftype (function (string) string) lispify-name))
 (defun lispify-name (name)
-  "Converts NAME to a lisp-like name. Specifically:
+  "Converts NAME to a lisp-like name if the readtable case
+is :UPCASE or :DOWNCASE. Specifically:
   1. Replaces underscores with hyphens.
-  2. CamelCase is converted to CAMEL-CASE"
+  2. CamelCase is converted to CAMEL-CASE
+
+If the readtable case is :PRESERVE it returns the name as it is.
+
+If the readtable case is :INVERT, it inverts the case of the name and returns it."
   (let* ((words (mapcar (lambda (word)
                           (coerce word 'string))
                         (remove-if #'null
                                    (break-into-words (coerce name 'list)))))
          (prefinal-string (string-upcase (format nil "~{~A~^-~}" words))))
-    (remove-if (lambda (ch)
-                 (char= ch #\_))
-               prefinal-string
-               :end (1- (length prefinal-string)))))
+    (ecase (readtable-case *readtable*)
+      ((:upcase :downcase)
+       (remove-if (lambda (ch)
+                    (char= ch #\_))
+                  prefinal-string
+                  :end (1- (length prefinal-string))))
+      (:preserve
+       name)
+      (:invert
+       ;; What is mixed stays mixed.
+       ;; All uppercase becomes lowercase
+       ;; All lowercase becomes uppercase
+       (cond ((upper-case-string-p name)
+              (string-downcase name))
+             ((lower-case-string-p name)
+              (string-upcase name))
+             (t
+              name))))))
 
 (defun get-unique-symbol (symbol-name package-name)
   (declare (type string symbol-name))
diff --git a/src/import-export.lisp b/src/import-export.lisp
index 40a60f9..87abb11 100644
--- a/src/import-export.lisp
+++ b/src/import-export.lisp
@@ -78,7 +78,9 @@ def _py4cl_non_callable(ele):
             (lisp-fun-name (lispify-name pyfun-name)))
         (intern (progn
                   ;; Some python modules (like meep) have class_name as well as ClassName
-                  (when (eq 'class callable-type)
+                  (when (and (eq 'class callable-type)
+                             (member (readtable-case cl:*readtable*)
+                                     '(:upcase :downcase)))
                     (setq lisp-fun-name (concatenate 'string lisp-fun-name "/CLASS")))
                   (get-unique-symbol lisp-fun-name lisp-package))
                 lisp-package))