X-Git-Url: https://git.distorted.org.uk/~mdw/sod/blobdiff_plain/a9cffac12f45d917ae632f4037991d7ba66091fb..b7a3889e4b7911ee2427b6cdc89a6acfe97e06f4:/src/final.lisp

diff --git a/src/final.lisp b/src/final.lisp
index dd8834f..071ebc9 100644
--- a/src/final.lisp
+++ b/src/final.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
@@ -26,6 +26,13 @@
 (cl:in-package #:sod)
 
 ;;;--------------------------------------------------------------------------
+;;; Miscellaneous details.
+
+(export '*sod-version*)
+(defparameter *sod-version* sod-sysdef:*version*
+  "The version of the SOD translator system, as a string.")
+
+;;;--------------------------------------------------------------------------
 ;;; Debugging utilities.
 
 (export '*debugout-pathname*)
@@ -35,7 +42,6 @@
 (defun test-module (path reason)
   "Reset the translator's state, read a module from PATH and output it with
    REASON, returning the result as a string."
-  (unless *builtin-module* (make-builtin-module))
   (clear-the-decks)
   (setf *module-map* (make-hash-table :test #'equal))
   (with-open-file (out *debugout-pathname*
@@ -44,4 +50,53 @@
 		   :if-does-not-exist :create)
     (output-module (read-module path) reason out)))
 
+(export 'test-parser)
+(defmacro test-parser ((scanner &key) parser input)
+  "Convenient macro for testing parsers at the REPL.
+
+   This is a macro so that the parser can use the fancy syntax.  The name
+   SCANNER is bound to a `sod-token-scanner' reading tokens from the INPUT
+   string.  Then the PARSER is invoked and three values are returned: a
+   `successp' flag indicating whether the parser succeeded; the result,
+   output or error indicator, of the parser; and a list consisting of the
+   lookahead token type and value, and a string containing the untokenized
+   remaining input."
+  (once-only (input)
+    (with-gensyms (char-scanner value winp consumedp where)
+      `(let* ((,char-scanner (make-string-scanner ,input))
+	      (,scanner (make-instance 'sod-token-scanner
+				       :char-scanner ,char-scanner
+				       :filename "<test-input>")))
+	 (with-parser-context (token-scanner-context :scanner ,scanner)
+	   (multiple-value-bind (,value ,winp ,consumedp) (parse ,parser)
+	     (declare (ignore ,consumedp))
+	     (let ((,where (scanner-capture-place ,char-scanner)))
+	       (values ,winp ,value
+		       (list (token-type ,scanner) (token-value ,scanner)
+			     (subseq ,input ,where))))))))))
+
+;;;--------------------------------------------------------------------------
+;;; Calisthenics.
+
+(export 'exercise)
+(defun exercise ()
+  "Exercise the pieces of the metaobject protocol.
+
+   In some Lisps, the compiler is run the first time methods are called, to
+   do fancy just-in-time optimization things.  This is great, only the
+   program doesn't actually run for very long and a lot of that work is
+   wasted because we're going to have to do it again next time the program
+   starts.  Only, if we exercise the various methods, or at least a large
+   fraction of them, before we dump an image, then everything will be fast.
+
+   That's the theory anyway.  Call this function before you dump an image and
+   see what happens."
+
+  (clear-the-decks)
+  (dolist (reason '(:h :c))
+    (with-output-to-string (bitbucket)
+      (output-module *builtin-module* reason bitbucket)))
+
+  (clear-the-decks))
+
 ;;;----- That's all, folks --------------------------------------------------