X-Git-Url: https://git.jsancho.org/?p=guile-assimp.git;a=blobdiff_plain;f=src%2Flow-level.scm;h=fd7af9ddea932881e7decdd718c69107d0bde48a;hp=d604789712e14939ca66c66fa64c3a1cb4baf6b3;hb=d53c6fdc3383148b2e73599fb955693aa6f597a5;hpb=0c88b5e31475e07d0d06ae9af01ad05a0efdc875

diff --git a/src/low-level.scm b/src/low-level.scm
index d604789..fd7af9d 100644
--- a/src/low-level.scm
+++ b/src/low-level.scm
@@ -21,6 +21,21 @@
   #:use-module (system foreign))
 
 
+(define (mk-string . args)
+  (string-concatenate
+   (map (lambda (a)
+	  (if (string? a)
+	      a
+	      (symbol->string (syntax->datum a))))
+	args)))
+
+(define (lambda-mk-symbol x)
+  (lambda args
+    (datum->syntax x
+      (string->symbol
+       (apply mk-string args)))))
+
+
 ;;; Parsers Definition
 
 (define-syntax define-struct-parser
@@ -29,10 +44,15 @@
       ((_ name (field type) ...)
        (with-syntax (((field-name ...) (map car #'((field type) ...)))
 		     ((field-type ...) (map cadr #'((field type) ...))))
-         #'(define (name pointer)
-	     (map cons
-		  '(field-name ...)
-		  (parse-c-struct pointer (list field-type ...)))))))))
+         #'(define* (name pointer-or-data #:key (reverse #f))
+	     (cond (reverse
+		    (make-c-struct
+		     (list field-type ...)
+		     pointer-or-data))
+		   (else
+		    (map cons
+			 '(field-name ...)
+			 (parse-c-struct pointer-or-data (list field-type ...)))))))))))
 
 (export-syntax define-struct-parser)
 
@@ -41,17 +61,7 @@
 
 (define-syntax define-conversion-type
   (lambda (x)
-    (define (mk-string . args)
-      (string-concatenate
-       (map (lambda (a)
-	      (if (string? a)
-		  a
-		  (symbol->string (syntax->datum a))))
-	    args)))
-    (define (mk-symbol . args)
-      (datum->syntax x
-        (string->symbol
-	 (apply mk-string args))))
+    (define mk-symbol (lambda-mk-symbol x))
     (syntax-case x (->)
       ((_ parser -> name (field-name field-proc) ...)
        (with-syntax ((type? (mk-symbol #'name "?"))