; Rules
; - Elements in each form must be indented the same amount
-; - No form longer than 50 lines
-; - Top level multiline forms must be separated by exactly one space
+; * No form longer than 50 lines
+; * Top level multiline forms must be separated by exactly one space
; * No line longer than 120 characters
-; - No use of unexported symbols in other packages
-; - No tabs
+; * No use of unexported symbols in other packages
+; * No tabs
; - Only one space between elements in a form on a single line
; * in-package must be first line in file unless file is package.lisp
-; - No whitespace only lines
-; - No empty lines at end of file
+; * No whitespace at end of line
+; * No lines that are only whitespace
+; * No empty lines at end of file
+; * Never have two empty lines in a row
+; * Only one in-package per file
+; * No hanging close parens
;
; Some thoughts
; - form starting reader macros will have to be hand added to this code
(defvar *line-no* nil)
(defvar *col-no* nil)
(defvar *evaluators* nil)
+(defvar *form-stack* nil)
+(defvar *form-ended-on-same-line* nil)
-(defparameter *possible-states*
- '(:begin ; start of file
- :normal ; normal processing
- ))
+(eval-when (:compile-toplevel :load-toplevel :execute)
+ (defparameter *possible-states*
+ '(:begin ; start of file
+ :normal ; normal processing
+ :beginning-of-line
+ :beginning-of-line-with-separator ; empty space in there
+ :beginning-of-symbols
+ :beginning-of-symbols-with-separator
+ :all ; matches everything
+ )))
(defun set-state (state)
(list
(lambda (state text)
(and
- (eql ,state state)
+ (or (eql :all ,state) (eql ,state state))
(or
(and (symbolp text) (eql text ,match))
(and ,scanner
(stringp text)
(multiple-value-bind (start end) (cl-ppcre:scan ,scanner text)
- (and start end (= 0 start) (/= 0 end)))))))
+ (and start end (= 0 start)))))))
(lambda (text) (second (multiple-value-list (cl-ppcre:scan ,scanner text))))
,func)
*evaluators*))))
(set-state :begin)
(setf *line-no* 0)
(setf *col-no* 0)
+ (setf *form-stack* nil)
+ (setf *form-ended-on-same-line* nil)
(format t "~%File: ~A~%" file)
(handler-case
(progn (evaluate (slurp-file file)) t)
; These are in reverse order
(progn
(setf *evaluators* nil)
+ (defevaluator :all "\\t"
+ (constantly "Must not use tabs"))
(defevaluator :begin "\\(in-package[^\\)]*\\)"
- (lambda ()
- (set-state :normal) nil))
+ (lambda () (set-state :normal)))
+ (defevaluator :beginning-of-line-with-separator :eof
+ (constantly "Must not end with empty line"))
+ (defevaluator :beginning-of-line-with-separator "\\n"
+ (constantly "Must not have two empty lines in a row"))
(defevaluator :begin ".*"
- (lambda ()
- "Must begin with in-package form"))
+ (constantly "Must begin with in-package form"))
+ (defevaluator :normal "\\( *in-package "
+ (constantly "Only one in-package per file"))
(defevaluator :normal "\\n"
(lambda ()
+ (set-state :beginning-of-line)
(incf *line-no*)
- (setf *col-no* 0)
+ (setf *col-no* -1)
+ nil))
+ (defevaluator :normal " +\\n"
+ (constantly "No whitespace at end of line"))
+ (defevaluator :beginning-of-line " *"
+ (lambda () (set-state :beginning-of-symbols)))
+ (defevaluator :beginning-of-line-with-separator " *"
+ (lambda () (set-state :beginning-of-symbols-with-separator)))
+ (defevaluator :beginning-of-symbols "\\n"
+ (lambda ()
+ (if
+ (< 0 *col-no*)
+ "No whitespace only lines"
+ (set-state :beginning-of-line-with-separator))))
+ (defevaluator :beginning-of-symbols "\\)"
+ (constantly "No hanging close parens"))
+ (defevaluator :beginning-of-symbols-with-separator "\\)"
+ (constantly "No hanging close parens"))
+ (defevaluator :beginning-of-symbols ""
+ (lambda ()
+ (if
+ (and (not *form-stack*) (not *form-ended-on-same-line*))
+ "Multiline top level forms must be separated by a space"
+ (set-state :normal))))
+ (defevaluator :beginning-of-symbols-with-separator ""
+ (lambda ()
+ (set-state :normal)))
+ (defevaluator :normal "\\("
+ (lambda ()
+ (push
+ (list *line-no* *col-no*)
+ *form-stack*)
nil))
- (defevaluator :normal "." (constantly nil))
- )
+ (defevaluator :normal "\\)"
+ (lambda ()
+ (let
+ ((form (pop *form-stack*)))
+ (cond
+ ((not form) "Unmatched ending paren")
+ ((< 50 (- *line-no* (car form))) "Forms can't be over 50 lines long")
+ (t (setf *form-ended-on-same-line* (= *line-no* (car form))) nil)))))
+ (defevaluator :normal "::"
+ (constantly "No internal symbols from other packages"))
+ (defevaluator :normal "." (constantly nil)))