1 (in-package #:style-checker)
4 ; * Elements on new line in each form must be indented the same amount
5 ; * No space/newline after open parens
6 ; * No form longer than 50 lines
7 ; * Top level multiline forms must be separated by exactly one space
8 ; * No line longer than 120 characters
9 ; * No use of unexported symbols in other packages
11 ; * Only one space between elements in a form on a single line
12 ; * in-package must be first line in file unless file is package.lisp
13 ; * No whitespace at end of line
14 ; * No lines that are only whitespace
15 ; * No empty lines at end of file
16 ; * Never have two empty lines in a row
17 ; * Only one in-package per file
18 ; * No hanging close parens
25 ; - form starting reader macros will have to be hand added to this code
26 ; - exceptions will eventually arise, and the rule file will have to be changed
27 ; - the proper formatting of "loop" is weird
29 (define-condition check-failure nil ((msg :initarg :msg :reader check-failure-msg)
30 (line-no :initarg :line-no :reader check-failure-line-no)
31 (col-no :initarg :col-no :reader check-failure-col-no)))
34 (defvar *line-no* nil)
36 (defvar *evaluators* nil)
37 (defvar *form-stack* nil)
38 (defvar *form-ended-on-same-line* nil)
40 (eval-when (:compile-toplevel :load-toplevel :execute)
41 (defparameter *possible-states*
42 '(:begin ; start of file
43 :normal ; normal processing
45 :beginning-of-line-with-separator ; empty space in there
47 :beginning-of-symbols-with-separator
48 :comment-with-separator ; weird edge case for pre-function comments
49 :beginning-of-line-with-comment-and-separator ; weird edge case part 2
50 :first-symbol ; first symbol of form/line
51 :all ; matches everything
55 (defun set-state (state)
56 (when (not (find state *possible-states*))
57 (error "Can't set state to ~A" state))
61 (defmacro defevaluator (state match func)
62 (when (not (find state *possible-states*)) (error "~A is an invalid state" state))
66 ((,scanner (when (stringp ,match) (cl-ppcre:create-scanner ,match))))
71 (or (eql :all ,state) (eql ,state state))
73 (and (symbolp text) (eql text ,match))
76 (multiple-value-bind (start end) (cl-ppcre:scan ,scanner text)
77 (and start end (= 0 start)))))))
78 (lambda (text) (second (multiple-value-list (cl-ppcre:scan ,scanner text))))
82 (defun evaluate (text)
85 ((evaluator (find-if (lambda (f) (funcall f *state* :eof)) *evaluators* :from-end t :key #'car))
86 (problem (when evaluator (funcall (third evaluator)))))
87 (when problem (error (make-condition 'check-failure :msg problem :line-no *line-no* :col-no *col-no*))))
89 ((evaluator (find-if (lambda (f) (funcall f *state* text)) *evaluators* :from-end t :key #'car)))
90 (when (not evaluator) (error (make-condition 'check-failure :msg (format nil "Can't check in state ~S: ~S..." *state* (subseq text 0 (min (length text) 10))) :line-no *line-no* :col-no *col-no*)))
92 ((problem (funcall (third evaluator))))
94 (error (make-condition 'check-failure :msg problem :line-no *line-no* :col-no *col-no*)))
96 ((length-of-match (funcall (cadr evaluator) text)))
97 (incf *col-no* length-of-match)
98 (when (< 120 *col-no*) (error (make-condition 'check-failure :msg "Line longer than 120 characters" :line-no *line-no* :col-no 0)))
99 (evaluate (subseq text length-of-match)))))))
101 (defun slurp-file (filename &key (element-type 'character) (sequence-type 'string))
102 (with-open-file (str filename :element-type element-type)
103 (let ((seq (make-sequence sequence-type (file-length str)))) (read-sequence seq str) seq)))
105 (defun check-file (file)
109 (setf *form-stack* nil)
110 (setf *form-ended-on-same-line* nil)
111 (format t "~%File: ~A~%" file)
113 (progn (evaluate (slurp-file file)) t)
115 (format t " - Had an error: ~S at ~A:~A~%" (check-failure-msg cf) (check-failure-line-no cf) (check-failure-col-no cf))
118 (defun check-directory (dir)
119 (every #'identity (mapcar #'check-file (directory (format nil "~A/**/*.lisp" dir)))))
121 ; These are in reverse order
123 (setf *evaluators* nil)
124 (defevaluator :beginning-of-symbols " *;[^\\n]*"
125 (lambda () (set-state :normal)))
126 (defevaluator :beginning-of-symbols-with-separator " *;[^\\n]*"
127 (lambda () (set-state :comment-with-separator)))
128 (defevaluator :normal " *;[^\\n]*"
129 (lambda () (set-state :normal)))
130 (defevaluator :normal "\\("
132 (push (list *line-no* *col-no*) *form-stack*)
133 (set-state :first-symbol)))
134 (defevaluator :first-symbol "\\("
137 ((and (not *form-stack*) (not (zerop *col-no*))) "Top level forms must begin on first column")
138 ((and *form-stack* (/= (1+ (cadr (car *form-stack*))) *col-no*))
139 "All form elements must be indented equally")
141 (push (list *line-no* *col-no*) *form-stack*)
142 (set-state :first-symbol)))))
143 (defevaluator :all "\\t" (constantly "Must not use tabs"))
144 (defevaluator :begin "\\(in-package[^\\)]*\\)" (lambda () (set-state :normal)))
145 (defevaluator :beginning-of-line-with-separator :eof (constantly "Must not end with empty line"))
146 (defevaluator :beginning-of-line-with-separator "\\n" (constantly "Must not have two empty lines in a row"))
147 (defevaluator :begin ".*" (constantly "Must begin with in-package form"))
148 (defevaluator :all "\\( *in-package " (constantly "Only one in-package per file"))
149 (defevaluator :normal "\\n"
153 (set-state :beginning-of-line)))
154 (defevaluator :comment-with-separator "\\n"
158 (set-state :beginning-of-line-with-comment-and-separator)
160 (defevaluator :normal " +\\n" (constantly "No whitespace at end of line"))
161 (defevaluator :beginning-of-line " *" (lambda () (set-state :beginning-of-symbols)))
162 (defevaluator :beginning-of-line-with-separator " *" (lambda () (set-state :beginning-of-symbols-with-separator)))
163 (defevaluator :beginning-of-line-with-comment-and-separator "\\n"
168 (set-state :beginning-of-line-with-separator))))
169 (defevaluator :beginning-of-line-with-comment-and-separator " *" (lambda () (set-state :beginning-of-symbols-with-separator)))
170 (defevaluator :beginning-of-symbols "\\n"
174 "No whitespace only lines"
178 (set-state :beginning-of-line-with-separator)))))
179 (defevaluator :beginning-of-symbols "\\)" (constantly "No hanging close parens"))
180 (defevaluator :beginning-of-symbols-with-separator "\\)" (constantly "No hanging close parens"))
181 (defevaluator :beginning-of-symbols ""
184 (and (not *form-stack*) (not *form-ended-on-same-line*))
185 "Multiline top level forms must be separated by a space"
186 (set-state :first-symbol))))
187 (defevaluator :beginning-of-symbols-with-separator ""
189 (set-state :first-symbol)))
190 (defevaluator :normal "\\)"
193 ((form (pop *form-stack*)))
195 ((not form) "Unmatched ending paren")
196 ((< 50 (- *line-no* (car form))) "Forms can't be over 50 lines long")
197 (t (setf *form-ended-on-same-line* (= *line-no* (car form))) nil)))))
198 (defevaluator :normal "::" (constantly "No internal symbols from other packages"))
199 (defevaluator :in-string "\\\\\"" (constantly nil))
200 (defevaluator :normal "\"" (lambda () (set-state :in-string)))
201 (defevaluator :in-string "\"" (lambda () (set-state :normal)))
202 (defevaluator :in-string "\\n"
207 (defevaluator :in-string "." (constantly nil))
208 (defevaluator :first-symbol "\\n" (constantly "No new line after opening form"))
209 (defevaluator :first-symbol " " (constantly "No space after opening parens"))
210 (defevaluator :first-symbol ""
212 ;(format t "HMMM: ~A ~A ~A~%" *form-stack* *line-no* *col-no*)
214 ((and *form-stack* (/= (1+ (cadr (car *form-stack*))) *col-no*))
215 "All form elements must be indented equally")
216 (t (set-state :normal)))))
217 (defevaluator :normal " " (constantly "Only one space between items of a form"))
218 (defevaluator :normal "." (constantly nil)))