From b26893f7dafc51e284177dc9b0529f650265693e Mon Sep 17 00:00:00 2001
From: retropikzel <retropikzel@iki.fi>
Date: Fri, 11 Jul 2025 13:06:55 +0300
Subject: [PATCH] Update dependencies

---
 snow/foreign/c.sld | 52 +++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 51 insertions(+), 1 deletion(-)

diff --git a/snow/foreign/c.sld b/snow/foreign/c.sld
index 121c725..655a8a2 100644
--- a/snow/foreign/c.sld
+++ b/snow/foreign/c.sld
@@ -300,7 +300,57 @@
           ;; c-variable
           ;define-c-variable (?)
           )
-  (cond-expand
+   (begin
+     (define type->libffi-type-number
+       (lambda (type)
+         (cond ((equal? type 'int8) 1)
+               ((equal? type 'uint8) 2)
+               ((equal? type 'int16) 3)
+               ((equal? type 'uint16) 4)
+               ((equal? type 'int32) 5)
+               ((equal? type 'uint32) 6)
+               ((equal? type 'int64) 7)
+               ((equal? type 'uint64) 8)
+               ((equal? type 'char) 9)
+               ((equal? type 'unsigned-char) 10)
+               ((equal? type 'short) 11)
+               ((equal? type 'unsigned-short) 12)
+               ((equal? type 'int) 13)
+               ((equal? type 'unsigned-int) 14)
+               ((equal? type 'long) 15)
+               ((equal? type 'unsigned-long) 16)
+               ((equal? type 'float) 17)
+               ((equal? type 'double) 18)
+               ((equal? type 'void) 19)
+               ((equal? type 'pointer) 20)
+               ((equal? type 'pointer-address) 21)
+               ((equal? type 'callback) 22)
+               (else (error "Undefined type" type)))))
+      (define c-bytevector-get
+        (lambda (pointer type offset)
+          (cond ((equal? type 'int8) (c-bytevector-s8-ref pointer offset))
+                ((equal? type 'uint8) (c-bytevector-u8-ref pointer offset))
+                ((equal? type 'int16) (c-bytevector-s16-ref pointer offset))
+                ((equal? type 'uint16) (c-bytevector-u16-ref pointer offset))
+                ((equal? type 'int32) (c-bytevector-s32-ref pointer offset))
+                ((equal? type 'uint32) (c-bytevector-u32-ref pointer offset))
+                ((equal? type 'int64) (c-bytevector-s64-ref pointer offset))
+                ((equal? type 'uint64) (c-bytevector-u64-ref pointer offset))
+                ((equal? type 'char) (integer->char (c-bytevector-s8-ref pointer offset)))
+                ((equal? type 'unsigned-char) (integer->char (c-bytevector-u8-ref pointer offset)))
+                ((equal? type 'short) (c-bytevector-sint-ref pointer offset (native-endianness) (c-type-size 'short)))
+                ((equal? type 'unsigned-short) (c-bytevector-sint-ref pointer offset (native-endianness) (c-type-size 'unsigned-short)))
+                ((equal? type 'int) (c-bytevector-sint-ref pointer offset (native-endianness) (c-type-size 'int)))
+                ((equal? type 'unsigned-int) (c-bytevector-sint-ref pointer offset (native-endianness) (c-type-size 'unsigned-int)))
+                ((equal? type 'long) (c-bytevector-sint-ref pointer offset (native-endianness) (c-type-size 'long)))
+                ((equal? type 'unsigned-long) (c-bytevector-sint-ref pointer offset (native-endianness) (c-type-size 'unsigned-long)))
+                ((equal? type 'float) (c-bytevector-ieee-single-native-ref pointer offset))
+                ((equal? type 'double) (c-bytevector-ieee-double-native-ref pointer offset))
+                ((equal? type 'pointer) (c-bytevector-pointer-ref pointer offset))
+                ((not (equal? type 'void)) (error "No such foreign type" type))
+                ;; Return unspecified on purpose if type is void
+                ))))
+  #;(cond-expand
     (chicken-6 (include-relative "c/internal.scm"))
     (else (include "c/internal.scm")))
   (cond-expand