X-Git-Url: https://git.distorted.org.uk/~mdw/sod/blobdiff_plain/9ec578d9fe450b7e7f9030dc9d930185593aa991..ac8ddb83cbc699b3d82ae1be837076b41d90757d:/src/frontend.lisp

diff --git a/src/frontend.lisp b/src/frontend.lisp
index 5430285..68c8a96 100644
--- a/src/frontend.lisp
+++ b/src/frontend.lisp
@@ -7,7 +7,7 @@
 
 ;;;----- Licensing notice ---------------------------------------------------
 ;;;
-;;; This file is part of the Sensble Object Design, an object system for C.
+;;; This file is part of the Sensible Object Design, an object system for C.
 ;;;
 ;;; SOD is free software; you can redistribute it and/or modify
 ;;; it under the terms of the GNU General Public License as published by
@@ -23,7 +23,17 @@
 ;;; along with SOD; if not, write to the Free Software Foundation,
 ;;; Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
-(cl:in-package #:sod)
+(cl:defpackage #:sod-frontend
+  (:use #:common-lisp #:optparse #:sod #:sod-parser)
+  (:shadowing-import-from #:optparse #:int))
+
+(cl:in-package #:sod-frontend)
+
+;;;--------------------------------------------------------------------------
+;;; Preparation for dumping.
+
+(clear-the-decks)
+(exercise)
 
 ;;;--------------------------------------------------------------------------
 ;;; The main program.
@@ -76,12 +86,12 @@
 
     ;; Option definitions.
     (define-program
-      :help "Probably ought to write this."
-      :version "0.1.0"
+      :help "Process SOD input files to produce (e.g.) C output."
+      :version *sod-version*
       :usage "SOURCES..."
       :options (options
 		(help-options :short-version #\V)
-		"Crazy options"
+		"Translator options"
 		(#\I "include" (:arg "DIR")
 		     ("Search DIR for module imports.")
 		     (list *module-dirs* 'string))
@@ -106,9 +116,6 @@
 		 (or builtinsp args))
       (die-usage))
 
-    ;; Prepare the builtins.
-    (make-builtin-module)
-
     ;; Do the main parsing job.
     (multiple-value-bind (hunoz nerror nwarn)
 	(count-and-report-errors ()
@@ -162,15 +169,17 @@
 					     reason))
 			   nil)))))
 
+	      ;; If there are no output types then there's nothing to do.
+	      (unless output-reasons
+		(error "No output types given: nothing to do"))
+
 	      ;; If we're writing the builtin module then now seems like a
 	      ;; good time to do that.
 	      (when builtinsp
-		(clear-the-decks)
 		(hack-module *builtin-module*))
 
 	      ;; Parse and write out the remaining modules.
 	      (dolist (arg args)
-		(clear-the-decks)
 		(hack-module (read-module arg))))))
 
       ;; Report on how well everything worked.