doc/concepts.tex, doc/syntax.tex: Replace `\textsf{...}' by `@|...|'.

[sod] / src / frontend.lisp

diff --git a/src/frontend.lisp b/src/frontend.lisp
index d3d9d9d..2d20fbc 100644 (file)
--- 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)))