doc/list-exports: Use the same output directory as the main `Makefile'.

[sod] / src / module-impl.lisp

diff --git a/src/module-impl.lisp b/src/module-impl.lisp
index cb3a8ad..1eb2531 100644 (file)
--- a/src/module-impl.lisp
+++ b/src/module-impl.lisp
@@ -73,9 +73,11 @@
     (let ((existing (gethash truename *module-map*)))
       (cond ((null existing))
            ((eq (module-state existing) t)
+            (when (plusp (module-errors existing))
+              (error "Module `~A' contains errors" name))
             (return-from build-module existing))
            (t
-            (error "Module ~A already being imported at ~A"
+            (error "Module `~A' already being imported at ~A"
                    name (module-state existing))))))
 
   ;; Construct the new module.
@@ -101,10 +103,14 @@
   (progv
       (mapcar #'car *module-bindings-alist*)
       (module-variables module)
-    (unwind-protect (funcall thunk)
-      (setf (module-variables module)
-           (mapcar (compose #'car #'symbol-value)
-                   *module-bindings-alist*)))))
+    (handler-bind ((error (lambda (cond)
+                           (declare (ignore cond))
+                           (incf (slot-value module 'errors))
+                           :decline)))
+      (unwind-protect (funcall thunk)
+       (setf (module-variables module)
+             (mapcar (compose #'car #'symbol-value)
+                     *module-bindings-alist*))))))
 
 (defun call-with-temporary-module (thunk)
   "Invoke THUNK in the context of a temporary module, returning its values.
@@ -146,16 +152,6 @@
 ;;;--------------------------------------------------------------------------
 ;;; Code fragments.
 
-(export '(c-fragment c-fragment-text))
-(defclass c-fragment ()
-  ((location :initarg :location :type file-location :reader file-location)
-   (text :initarg :text :type string :reader c-fragment-text))
-  (:documentation
-   "Represents a fragment of C code to be written to an output file.
-
-   A C fragment is aware of its original location, and will bear proper
-   `#line' markers when written out."))
-
 (defun output-c-excursion (stream location func)
   "Invoke FUNC surrounding it by writing #line markers to STREAM.
 
@@ -199,7 +195,10 @@
                 (prin1 (subseq text 0 37) stream)
                 (write-string "..." stream))))
        (output-c-excursion stream location
-                           (lambda (stream) (write-string text stream))))))
+                           (lambda (stream)
+                             (awhen (file-location-column location)
+                               (dotimes (i it) (write-char #\space stream)))
+                             (write-string text stream))))))
 
 (defmethod make-load-form ((fragment c-fragment) &optional environment)
   (make-load-form-saving-slots fragment :environment environment))
@@ -232,10 +231,10 @@
    See `find-file' for the grubby details.")
 
 (export 'find-file)
-(defun find-file (scanner name what thunk)
+(defun find-file (home name what thunk)
   "Find a file called NAME on the module search path, and call THUNK on it.
 
-   The file is searched for relative to the SCANNER's current file, and also
+   The file is searched for relative to the HOME file or directory, and also
    in the directories mentioned in the `*module-dirs*' list.  If the file is
    found, then THUNK is invoked with two arguments: the name we used to find
    it (which might be relative to the starting directory) and the truename
@@ -249,8 +248,7 @@
    THUNK is not invoked with any additional handlers defined."
 
   (handler-case
-      (dolist (dir (cons (pathname (scanner-filename scanner)) *module-dirs*)
-              (values nil nil))
+      (dolist (dir (cons home *module-dirs*) (values nil nil))
        (let* ((path (merge-pathnames name dir))
               (probe (probe-file path)))
          (when probe