X-Git-Url: https://git.distorted.org.uk/~mdw/sod/blobdiff_plain/abbdf025d78ec4c39146b46a3a067d0534165abf..92e590b029e3cffc62b2876149ab257f0e6d8eb3:/src/frontend.lisp

diff --git a/src/frontend.lisp b/src/frontend.lisp
index d3d9d9d..2d20fbc 100644
--- a/src/frontend.lisp
+++ b/src/frontend.lisp
@@ -74,6 +74,18 @@
 
 	     (setf var path))))))
 
+(defun update-usage ()
+  (setf *usage* (simple-usage *options* "SOURCES...")))
+
+(export 'augment-options)
+(defun augment-options (options)
+  "Add OPTIONS to the program's options list."
+  (asetf *options* (append it options))
+  (setf (op-options *option-parser*) *options*)
+  (update-usage))
+
+(use-package "SOD-FRONTEND" "SOD-USER")
+
 (export 'main)
 (defun main ()
 
@@ -92,7 +104,6 @@
     (define-program
       :help "Process SOD input files to produce (e.g.) C output."
       :version *sod-version*
-      :usage "SOURCES..."
       :options (options
 		(help-options :short-version #\V)
 		"Translator options"
@@ -108,12 +119,39 @@
 		(#\d "directory" (:arg "DIR")
 		     ("Write output files to DIR.")
 		     (dirpath output-path))
+		(#\e "eval" (:arg "LISP")
+		     ("Evaluate raw Lisp code.")
+		     (lambda (lisp)
+		       (handler-case
+			   (let ((*package* (find-package "SOD-USER")))
+			     (eval (read-from-string lisp)))
+			 (error (error)
+			   (option-parse-error "~A" error)))))
+		(#\l "load" (:arg "FILE")
+		     ("Load a file of Lisp code.")
+		     (lambda (file)
+		       (let ((file (merge-pathnames file
+						    (make-pathname
+						     :type "LISP"
+						     :case :common))))
+			 (handler-case
+			     (let ((*package* (find-package "SOD-USER")))
+			       (find-file *default-pathname-defaults* file
+					  "Lisp file"
+					  (lambda (path true)
+					    (declare (ignore path))
+					    (load true
+						  :verbose nil
+						  :print nil))))
+			   (error (error)
+			     (option-parse-error "~A" error))))))
 		(#\p "stdout"
 		     ("Write output files to standard output.")
 		     (set stdoutp))
 		(#\t "type" (:arg "OUT-TYPE")
 		     ("Produce output of type OUT-TYPE.")
 		     (list output-reasons 'keyword))))
+    (update-usage)
 
     ;; Actually parse the options.
     (let ((*option-parser* (make-option-parser)))