X-Git-Url: https://git.distorted.org.uk/~mdw/sod/blobdiff_plain/54c017728489af16b13e13541e7cc53c985ca436..db56b1d3c3d4bc9ffb6500b1f40c27c77d868aa4:/src/final.lisp

diff --git a/src/final.lisp b/src/final.lisp
index 5df72f1..1b87c26 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*)
@@ -43,6 +50,54 @@
 		   :if-does-not-exist :create)
     (output-module (read-module path) reason out)))
 
+(export 'test-parse-c-type)
+(defun test-parse-c-type (string)
+  "Parse STRING as a C type, with optional kernel, and show the results."
+  (with-input-from-string (in string)
+    (let* ((*module-type-map* (make-hash-table))
+	   (charscan (make-instance 'charbuf-scanner
+				    :stream in
+				    :filename "<string>"))
+	   (tokscan (make-instance 'sod-token-scanner
+				   :char-scanner charscan
+				   :filename "<string>")))
+      (with-parser-context (token-scanner-context :scanner tokscan)
+	(multiple-value-bind (value winp consumedp)
+	    (parse (seq ((decls (parse-c-type tokscan))
+			 (type (parse-declarator tokscan decls :abstractp t))
+			 :eof)
+		     type))
+	  (declare (ignore consumedp))
+	  (if winp
+	      (values t (car value) (cdr value)
+		      (princ-to-string (car value)))
+	      (values nil value)))))))
+
+(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.