X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Fpathname.lisp;h=1b221ff2477abf942bde2f34fe796281f847e3ac;hb=ea36d3d79b9dfe3598faca5e267efd5980b94d4a;hp=7b44faeeadcf45c6112385540a4091251ace9039;hpb=0b3ec4b1d978b887db175b7b3bada8e727683e15;p=sbcl.git

diff --git a/src/code/pathname.lisp b/src/code/pathname.lisp
index 7b44fae..1b221ff 100644
--- a/src/code/pathname.lisp
+++ b/src/code/pathname.lisp
@@ -26,20 +26,31 @@
   (customary-case (required-argument) :type (member :upper :lower)))
 
 (def!struct (logical-host
-		  (:include host
-			    (:parse #'parse-logical-namestring)
-			    (:unparse #'unparse-logical-namestring)
-			    (:unparse-host
-			     (lambda (x)
-			       (logical-host-name (%pathname-host x))))
-			    (:unparse-directory #'unparse-logical-directory)
-			    (:unparse-file #'unparse-unix-file)
-			    (:unparse-enough #'unparse-enough-namestring)
-			    (:customary-case :upper)))
+	     (:make-load-form-fun make-logical-host-load-form-fun)
+	     (:include host
+		       (:parse #'parse-logical-namestring)
+		       (:unparse #'unparse-logical-namestring)
+		       (:unparse-host
+			(lambda (x)
+			  (logical-host-name (%pathname-host x))))
+		       (:unparse-directory #'unparse-logical-directory)
+		       (:unparse-file #'unparse-unix-file)
+		       (:unparse-enough #'unparse-enough-namestring)
+		       (:customary-case :upper)))
   (name "" :type simple-base-string)
   (translations nil :type list)
   (canon-transls nil :type list))
 
+(def!method print-object ((logical-host logical-host) stream)
+  (print-unreadable-object (logical-host stream :type t)
+    (prin1 (logical-host-name logical-host) stream)))
+
+;;; What would it mean to dump a logical host and reload it into
+;;; another Lisp image? It's not clear, so we don't support it.
+(defun make-logical-host-load-form-fun (logical-host)
+  (error "~@<A logical host can't be dumped as a constant: ~2I~_~S~:>"
+         logical-host))
+
 ;;; A PATTERN is a list of entries and wildcards used for pattern
 ;;; matches of translations.
 (sb!xc:defstruct (pattern (:constructor make-pattern (pieces)))
@@ -74,6 +85,12 @@
   ;; on standard Unix filesystems)
   (version nil :type (or integer pathname-component-tokens (member :newest))))
 
+;;; Return a value suitable, e.g., for preinitializing
+;;; *DEFAULT-PATHNAME-DEFAULTS* before *DEFAULT-PATHNAME-DEFAULTS* is
+;;; initialized (at which time we can't safely call e.g. #'PATHNAME).
+(defun make-trivial-default-pathname ()
+  (%make-pathname *unix-host* nil nil nil nil :newest))
+
 ;;; Logical pathnames have the following format:
 ;;;
 ;;; logical-namestring ::=
@@ -90,7 +107,7 @@
 ;;;
 ;;; Physical pathnames include all these slots and a device slot.
 
-;;; Logical pathnames are a subclass of pathname. Their class
+;;; Logical pathnames are a subclass of PATHNAME. Their class
 ;;; relations are mimicked using structures for efficency.
 (sb!xc:defstruct (logical-pathname (:conc-name %logical-pathname-)
 				   (:include pathname)