src/frontend.lisp: Add `--backtrace' option to expose error context.

[sod] / src / parser / parser-proto.lisp

diff --git a/src/parser/parser-proto.lisp b/src/parser/parser-proto.lisp
index d458e70d24c14fd5fcdb400262e327de14f15a34..b97cd4b47ff5059b8d705f4dad5cab4edd10779a 100644 (file)
--- a/src/parser/parser-proto.lisp
+++ b/src/parser/parser-proto.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
@@ -77,6 +77,7 @@ (cl:in-package #:sod-parser)
 ;;;--------------------------------------------------------------------------
 ;;; Utilities.
 
+(export 'combine-parser-failures)
 (defun combine-parser-failures (failures)
   "Combine the failure indicators listed in FAILURES.
 
@@ -151,10 +152,9 @@ (defmacro defparse (name bvl &body body)
             ((,context ,ctxclass) (,head (eql ',name)) ,tail)
           ,@doc
           (declare (ignorable ,context))
-          (block ,name
-            (destructuring-bind ,bvl ,tail
-              ,@decls
-              ,@body)))))))
+          (destructuring-bind ,bvl ,tail
+            ,@decls
+            (block ,name ,@body)))))))
 
 (export '(with-parser-context parse))
 (defmacro with-parser-context ((class &rest initargs) &body body)
@@ -572,7 +572,11 @@ (defmacro define-pluggable-parser (symbol tag (&rest bvl) &body body)
    If a parser with the given TAG is already attached to SYMBOL then the new
    parser replaces the old one; otherwise it is added to the collection."
 
-  `(pluggable-parser-add ',symbol ',tag (lambda ,bvl ,@body)))
+  (multiple-value-bind (docs decls body) (parse-body body)
+    `(pluggable-parser-add ',symbol ',tag
+                          (lambda ,bvl
+                            ,@docs ,@decls
+                            (block ,symbol ,@body)))))
 
 ;;;--------------------------------------------------------------------------
 ;;; Rewindable parser context protocol.