#!/bin/sh
exec guile -q -s "$0" "$@"
!#

;; The use of certain identifiers as variable or parameter names has
;; been found to cause build problems on particular platforms.  The
;; aim of this test is to cause "make check" to fail (on GNU/Linux,
;; which most Guile developers use) if we accidentally add new code
;; that uses those identifiers.

(define bad-identifiers
  '(
    ;; On AIX 5.2 and 5.3, /usr/include/sys/timer.h includes:
    ;;	 #ifndef  _LINUX_SOURCE_COMPAT
    ;;	 #define func_data       t_union.data
    ;;	 #endif
    ;; So we want to avoid using func_data in Guile source code.
    "func_data"

    ;; More troublesome identifiers can be added into the list here.
    ))

(use-modules (ice-9 regex) (ice-9 rdelim))

(define bad-id-regexp
  (make-regexp (string-append "\\<("
			      (string-join (map regexp-quote bad-identifiers) "|")
			      ")\\>")))

(define exit-status 0)

;; Non-exported code from (ice-9 ftw).
(define (directory-files dir)
  (let ((dir-stream (opendir dir)))
    (let loop ((new (readdir dir-stream))
               (acc '()))
      (if (eof-object? new)
	  (begin
	    (closedir dir-stream)
	    acc)
          (loop (readdir dir-stream)
                (if (or (string=? "."  new)             ;;; ignore
                        (string=? ".." new))            ;;; ignore
                    acc
                    (cons (in-vicinity dir new) acc)))))))

(define (directory-files-matching dir pattern)
  (let ((file-name-regexp (make-regexp pattern)))
    (filter (lambda (fn)
	      (regexp-exec file-name-regexp fn))
	    (directory-files dir))))

(let loop ((file-names (directory-files-matching "../../libguile"
						 "\\.[ch]$")))
  (or (null? file-names)
      (begin
	(with-input-from-file (car file-names)
	  (lambda ()
	    (let loop ((linenum 1) (line (read-line)))
	      (or (eof-object? line)
		  (begin
		    (if (regexp-exec bad-id-regexp line)
			(begin
			  (set! exit-status 1)
			  (format (current-error-port)
				  "~a:~a: ~a\n"
				  (car file-names)
				  linenum
				  line)))
		    (loop (+ linenum 1) (read-line)))))))
	(loop (cdr file-names)))))
     
(exit exit-status)

;; Local Variables:
;; mode: scheme
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