PLT: source locations.

1 files changed, 41 insertions, 0 deletions

diff --git a/scheme/plt/geiser/locations.ss b/scheme/plt/geiser/locations.ss
new file mode 100644
index 0000000..80040f9
--- /dev/null
+++ b/scheme/plt/geiser/locations.ss
@@ -0,0 +1,41 @@
+;; locations.ss -- locating symbols
+
+;; Copyright (C) 2009 Jose Antonio Ortega Ruiz
+
+;; Author: Jose Antonio Ortega Ruiz <jao@gnu.org>
+;; Start date: Sun Apr 26, 2009 19:43
+
+;; This file is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This file is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Comentary:
+
+;; Finding symbol location
+
+;;; Code:
+
+#lang scheme
+
+(provide symbol-location)
+
+(define (%symbol-location sym)
+  (let ([binding (identifier-binding sym)])
+    (and (list? binding)
+         (resolved-module-path-name
+          (module-path-index-resolve (car binding))))))
+
+(define (symbol-location sym)
+  (let ((file (%symbol-location (namespace-symbol->identifier sym))))
+    (list (cons 'file (if (path? file) (path->string file) '())))))
+
+;;; locations.ss ends here