59 lines
1.7 KiB
Racket
59 lines
1.7 KiB
Racket
;;; locations.rkt -- locating symbols
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;; Copyright (C) 2009, 2010, 2012 Jose Antonio Ortega Ruiz
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;; This program is free software; you can redistribute it and/or
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;; modify it under the terms of the Modified BSD License. You should
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;; have received a copy of the license along with this program. If
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;; not, see <http://www.xfree86.org/3.3.6/COPYRIGHT2.html#5>.
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;; Start date: Sun Apr 26, 2009 19:43
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#lang racket
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(provide symbol-location
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symbol-location*
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module-location
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symbol-module
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symbol-module-name)
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(require geiser/utils geiser/modules)
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(define (symbol-location* sym)
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(let* ([id (namespace-symbol->identifier sym)]
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[binding (and id (identifier-binding id))])
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(if (list? binding)
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(cons
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(cadr binding)
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(resolved-module-path-name
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(module-path-index-resolve (car binding))))
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(cons sym #f))))
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(define (switch-extension path)
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(if (regexp-match? "\\.rkt$" path)
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(regexp-replace "\\.rkt$" path ".ss")
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(regexp-replace "\\.ss$" path ".rkt")))
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(define (make-location name path line)
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(let* ([path (if (path? path) (path->string path) #f)]
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[path (and path (if (file-exists? path) path (switch-extension path)))])
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(list (cons "name" name)
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(cons "file" (or path '()))
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(cons "line" (or line '())))))
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(define (symbol-location sym)
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(let* ([loc (symbol-location* sym)]
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[name (car loc)]
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[path (cdr loc)])
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(if path
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(make-location name path #f)
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(module-location sym))))
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(define symbol-module (compose cdr symbol-location*))
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(define symbol-module-name
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(compose module-path-name->name symbol-module))
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(define (module-location sym)
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(make-location sym (module-spec->path-name sym) 1))
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