881 lines
		
	
	
	
		
			34 KiB
		
	
	
	
		
			Common Lisp
		
	
	
	
	
	
			
		
		
	
	
			881 lines
		
	
	
	
		
			34 KiB
		
	
	
	
		
			Common Lisp
		
	
	
	
	
	
;;; -*- lisp -*-
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;;;; A docstring extractor for the sbcl manual.  Creates
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;;;; @include-ready documentation from the docstrings of exported
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;;;; symbols of specified packages.
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;;;; This software is part of the SBCL software system. SBCL is in the
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;;;; public domain and is provided with absolutely no warranty. See
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;;;; the COPYING file for more information.
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;;;;
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;;;; Written by Rudi Schlatte <rudi@constantly.at>, mangled
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;;;; by Nikodemus Siivola.
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;;;; TODO
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;;;; * Verbatim text
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;;;; * Quotations
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;;;; * Method documentation untested
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;;;; * Method sorting, somehow
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;;;; * Index for macros & constants?
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;;;; * This is getting complicated enough that tests would be good
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;;;; * Nesting (currently only nested itemizations work)
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;;;; * doc -> internal form -> texinfo (so that non-texinfo format are also
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;;;;   easily generated)
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;;;; FIXME: The description below is no longer complete. This
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;;;; should possibly be turned into a contrib with proper documentation.
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;;;; Formatting heuristics (tweaked to format SAVE-LISP-AND-DIE sanely):
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;;;;
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;;;; Formats SYMBOL as @code{symbol}, or @var{symbol} if symbol is in
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;;;; the argument list of the defun / defmacro.
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;;;;
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;;;; Lines starting with * or - that are followed by intented lines
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;;;; are marked up with @itemize.
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;;;;
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;;;; Lines containing only a SYMBOL that are followed by indented
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;;;; lines are marked up as @table @code, with the SYMBOL as the item.
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(eval-when (:compile-toplevel :load-toplevel :execute)
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  (require 'sb-introspect))
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(defpackage :sb-texinfo
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  (:use :cl :sb-mop)
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  (:shadow #:documentation)
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  (:export #:generate-includes #:document-package)
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  (:documentation
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   "Tools to generate TexInfo documentation from docstrings."))
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(in-package :sb-texinfo)
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;;;; various specials and parameters
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(defvar *texinfo-output*)
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(defvar *texinfo-variables*)
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(defvar *documentation-package*)
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(defvar *base-package*)
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(defparameter *undocumented-packages* '(sb-pcl sb-int sb-kernel sb-sys sb-c))
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(defparameter *documentation-types*
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  '(compiler-macro
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    function
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    method-combination
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    setf
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    ;;structure  ; also handled by `type'
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    type
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    variable)
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  "A list of symbols accepted as second argument of `documentation'")
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(defparameter *character-replacements*
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  '((#\* . "star") (#\/ . "slash") (#\+ . "plus")
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    (#\< . "lt") (#\> . "gt")
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    (#\= . "equals"))
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  "Characters and their replacement names that `alphanumize' uses. If
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the replacements contain any of the chars they're supposed to replace,
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you deserve to lose.")
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(defparameter *characters-to-drop* '(#\\ #\` #\')
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  "Characters that should be removed by `alphanumize'.")
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(defparameter *texinfo-escaped-chars* "@{}"
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  "Characters that must be escaped with #\@ for Texinfo.")
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(defparameter *itemize-start-characters* '(#\* #\-)
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  "Characters that might start an itemization in docstrings when
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  at the start of a line.")
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(defparameter *symbol-characters* "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890*:-+&#'"
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  "List of characters that make up symbols in a docstring.")
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(defparameter *symbol-delimiters* " ,.!?;")
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(defparameter *ordered-documentation-kinds*
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  '(package type structure condition class macro))
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;;;; utilities
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(defun flatten (list)
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  (cond ((null list)
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         nil)
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        ((consp (car list))
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         (nconc (flatten (car list)) (flatten (cdr list))))
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        ((null (cdr list))
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         (cons (car list) nil))
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        (t
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         (cons (car list) (flatten (cdr list))))))
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(defun whitespacep (char)
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  (find char #(#\tab #\space #\page)))
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(defun setf-name-p (name)
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  (or (symbolp name)
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      (and (listp name) (= 2 (length name)) (eq (car name) 'setf))))
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(defgeneric specializer-name (specializer))
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(defmethod specializer-name ((specializer eql-specializer))
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  (list 'eql (eql-specializer-object specializer)))
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(defmethod specializer-name ((specializer class))
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  (class-name specializer))
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(defun ensure-class-precedence-list (class)
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  (unless (class-finalized-p class)
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    (finalize-inheritance class))
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  (class-precedence-list class))
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(defun specialized-lambda-list (method)
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  ;; courtecy of AMOP p. 61
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  (let* ((specializers (method-specializers method))
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         (lambda-list (method-lambda-list method))
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         (n-required (length specializers)))
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    (append (mapcar (lambda (arg specializer)
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                      (if  (eq specializer (find-class 't))
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                           arg
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                           `(,arg ,(specializer-name specializer))))
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                    (subseq lambda-list 0 n-required)
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                    specializers)
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           (subseq lambda-list n-required))))
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(defun string-lines (string)
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  "Lines in STRING as a vector."
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  (coerce (with-input-from-string (s string)
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            (loop for line = (read-line s nil nil)
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               while line collect line))
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          'vector))
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(defun indentation (line)
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  "Position of first non-SPACE character in LINE."
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  (position-if-not (lambda (c) (char= c #\Space)) line))
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(defun docstring (x doc-type)
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  (cl:documentation x doc-type))
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(defun flatten-to-string (list)
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  (format nil "~{~A~^-~}" (flatten list)))
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(defun alphanumize (original)
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  "Construct a string without characters like *`' that will f-star-ck
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up filename handling. See `*character-replacements*' and
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`*characters-to-drop*' for customization."
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  (let ((name (remove-if (lambda (x) (member x *characters-to-drop*))
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                         (if (listp original)
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                             (flatten-to-string original)
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                             (string original))))
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        (chars-to-replace (mapcar #'car *character-replacements*)))
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    (flet ((replacement-delimiter (index)
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             (cond ((or (< index 0) (>= index (length name))) "")
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                   ((alphanumericp (char name index)) "-")
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                   (t ""))))
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      (loop for index = (position-if #'(lambda (x) (member x chars-to-replace))
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                                     name)
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         while index
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         do (setf name (concatenate 'string (subseq name 0 index)
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                                    (replacement-delimiter (1- index))
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                                    (cdr (assoc (aref name index)
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                                                *character-replacements*))
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                                    (replacement-delimiter (1+ index))
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                                    (subseq name (1+ index))))))
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    name))
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;;;; generating various names
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(defgeneric name (thing)
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  (:documentation "Name for a documented thing. Names are either
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symbols or lists of symbols."))
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(defmethod name ((symbol symbol))
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  symbol)
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(defmethod name ((cons cons))
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  cons)
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(defmethod name ((package package))
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  (short-package-name package))
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(defmethod name ((method method))
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  (list
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   (generic-function-name (method-generic-function method))
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   (method-qualifiers method)
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   (specialized-lambda-list method)))
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;;; Node names for DOCUMENTATION instances
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(defgeneric name-using-kind/name (kind name doc))
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(defmethod name-using-kind/name (kind (name string) doc)
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  (declare (ignore kind doc))
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  name)
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(defmethod name-using-kind/name (kind (name symbol) doc)
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  (declare (ignore kind))
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  (format nil "~@[~A:~]~A" (short-package-name (get-package doc)) name))
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(defmethod name-using-kind/name (kind (name list) doc)
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  (declare (ignore kind))
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  (assert (setf-name-p name))
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  (format nil "(setf ~@[~A:~]~A)" (short-package-name (get-package doc)) (second name)))
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(defmethod name-using-kind/name ((kind (eql 'method)) name doc)
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  (format nil "~A~{ ~A~} ~A"
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          (name-using-kind/name nil (first name) doc)
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          (second name)
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          (third name)))
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(defun node-name (doc)
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  "Returns TexInfo node name as a string for a DOCUMENTATION instance."
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  (let ((kind (get-kind doc)))
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    (format nil "~:(~A~) ~(~A~)" kind (name-using-kind/name kind (get-name doc) doc))))
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(defun short-package-name (package)
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  (unless (eq package *base-package*)
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    (car (sort (copy-list (cons (package-name package) (package-nicknames package)))
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               #'< :key #'length))))
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;;; Definition titles for DOCUMENTATION instances
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(defgeneric title-using-kind/name (kind name doc))
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(defmethod title-using-kind/name (kind (name string) doc)
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  (declare (ignore kind doc))
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  name)
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(defmethod title-using-kind/name (kind (name symbol) doc)
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  (declare (ignore kind))
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  (format nil "~@[~A:~]~A" (short-package-name (get-package doc)) name))
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(defmethod title-using-kind/name (kind (name list) doc)
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  (declare (ignore kind))
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  (assert (setf-name-p name))
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  (format nil "(setf ~@[~A:~]~A)" (short-package-name (get-package doc)) (second name)))
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(defmethod title-using-kind/name ((kind (eql 'method)) name doc)
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  (format nil "~{~A ~}~A"
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          (second name)
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          (title-using-kind/name nil (first name) doc)))
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(defun title-name (doc)
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  "Returns a string to be used as name of the definition."
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  (string-downcase (title-using-kind/name (get-kind doc) (get-name doc) doc)))
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(defun include-pathname (doc)
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  (let* ((kind (get-kind doc))
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         (name (nstring-downcase
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                (if (eq 'package kind)
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                    (format nil "package-~A" (alphanumize (get-name doc)))
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                    (format nil "~A-~A-~A"
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                            (case (get-kind doc)
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                              ((function generic-function) "fun")
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                              (structure "struct")
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                              (variable "var")
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                              (otherwise (symbol-name (get-kind doc))))
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                            (alphanumize (let ((*base-package* nil))
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                                           (short-package-name (get-package doc))))
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                            (alphanumize (get-name doc)))))))
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    (make-pathname :name name  :type "texinfo")))
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;;;; documentation class and related methods
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(defclass documentation ()
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  ((name :initarg :name :reader get-name)
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   (kind :initarg :kind :reader get-kind)
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   (string :initarg :string :reader get-string)
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   (children :initarg :children :initform nil :reader get-children)
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   (package :initform *documentation-package* :reader get-package)))
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(defmethod print-object ((documentation documentation) stream)
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  (print-unreadable-object (documentation stream :type t)
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    (princ (list (get-kind documentation) (get-name documentation)) stream)))
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(defgeneric make-documentation (x doc-type string))
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(defmethod make-documentation ((x package) doc-type string)
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  (declare (ignore doc-type))
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  (make-instance 'documentation
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                 :name (name x)
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                 :kind 'package
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                 :string string))
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(defmethod make-documentation (x (doc-type (eql 'function)) string)
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  (declare (ignore doc-type))
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  (let* ((fdef (and (fboundp x) (fdefinition x)))
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         (name x)
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         (kind (cond ((and (symbolp x) (special-operator-p x))
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                      'special-operator)
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                     ((and (symbolp x) (macro-function x))
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                      'macro)
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                     ((typep fdef 'generic-function)
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                      (assert (or (symbolp name) (setf-name-p name)))
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                      'generic-function)
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                     (fdef
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                      (assert (or (symbolp name) (setf-name-p name)))
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                      'function)))
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         (children (when (eq kind 'generic-function)
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                     (collect-gf-documentation fdef))))
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    (make-instance 'documentation
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                   :name (name x)
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                   :string string
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                   :kind kind
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                   :children children)))
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(defmethod make-documentation ((x method) doc-type string)
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  (declare (ignore doc-type))
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  (make-instance 'documentation
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                 :name (name x)
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                 :kind 'method
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                 :string string))
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(defmethod make-documentation (x (doc-type (eql 'type)) string)
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  (make-instance 'documentation
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                 :name (name x)
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                 :string string
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                 :kind (etypecase (find-class x nil)
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                         (structure-class 'structure)
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                         (standard-class 'class)
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                         (sb-pcl::condition-class 'condition)
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                         ((or built-in-class null) 'type))))
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(defmethod make-documentation (x (doc-type (eql 'variable)) string)
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  (make-instance 'documentation
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                 :name (name x)
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                 :string string
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                 :kind (if (constantp x)
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                           'constant
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                           'variable)))
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(defmethod make-documentation (x (doc-type (eql 'setf)) string)
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  (declare (ignore doc-type))
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  (make-instance 'documentation
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                 :name (name x)
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                 :kind 'setf-expander
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                 :string string))
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(defmethod make-documentation (x doc-type string)
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  (make-instance 'documentation
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                 :name (name x)
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                 :kind doc-type
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                 :string string))
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(defun maybe-documentation (x doc-type)
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  "Returns a DOCUMENTATION instance for X and DOC-TYPE, or NIL if
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there is no corresponding docstring."
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  (let ((docstring (docstring x doc-type)))
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    (when docstring
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      (make-documentation x doc-type docstring))))
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(defun lambda-list (doc)
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  (case (get-kind doc)
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    ((package constant variable type structure class condition nil)
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     nil)
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    (method
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     (third (get-name doc)))
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    (t
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     ;; KLUDGE: Eugh.
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     ;;
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     ;; believe it or not, the above comment was written before CSR
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     ;; came along and obfuscated this.  (2005-07-04)
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     (when (symbolp (get-name doc))
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       (labels ((clean (x &key optional key)
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                  (typecase x
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                    (atom x)
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                    ((cons (member &optional))
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                     (cons (car x) (clean (cdr x) :optional t)))
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                    ((cons (member &key))
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                     (cons (car x) (clean (cdr x) :key t)))
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                    ((cons (member &whole &environment))
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                     ;; Skip these
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                     (clean (cdr x) :optional optional :key key))
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                    ((cons cons)
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                     (cons
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                      (cond (key (if (consp (caar x))
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                                     (caaar x)
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                                     (caar x)))
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                            (optional (caar x))
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                            (t (clean (car x))))
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                      (clean (cdr x) :key key :optional optional)))
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                    (cons
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                     (cons
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                      (cond ((or key optional) (car x))
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                            (t (clean (car x))))
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                      (clean (cdr x) :key key :optional optional))))))
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         (clean (sb-introspect:function-lambda-list (get-name doc))))))))
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(defun get-string-name (x)
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  (let ((name (get-name x)))
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    (cond ((symbolp name)
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           (symbol-name name))
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          ((and (consp name) (eq 'setf (car name)))
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           (symbol-name (second name)))
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          ((stringp name)
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           name)
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          (t
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           (error "Don't know which symbol to use for name ~S" name)))))
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(defun documentation< (x y)
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  (let ((p1 (position (get-kind x) *ordered-documentation-kinds*))
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        (p2 (position (get-kind y) *ordered-documentation-kinds*)))
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    (if (or (not (and p1 p2)) (= p1 p2))
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        (string< (get-string-name x) (get-string-name y))
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        (< p1 p2))))
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;;;; turning text into texinfo
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(defun escape-for-texinfo (string &optional downcasep)
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  "Return STRING with characters in *TEXINFO-ESCAPED-CHARS* escaped
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with #\@. Optionally downcase the result."
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  (let ((result (with-output-to-string (s)
 | 
						|
                  (loop for char across string
 | 
						|
                        when (find char *texinfo-escaped-chars*)
 | 
						|
                        do (write-char #\@ s)
 | 
						|
                        do (write-char char s)))))
 | 
						|
    (if downcasep (nstring-downcase result) result)))
 | 
						|
 | 
						|
(defun empty-p (line-number lines)
 | 
						|
  (and (< -1 line-number (length lines))
 | 
						|
       (not (indentation (svref lines line-number)))))
 | 
						|
 | 
						|
;;; line markups
 | 
						|
 | 
						|
(defvar *not-symbols* '("ANSI" "CLHS"))
 | 
						|
 | 
						|
(defun locate-symbols (line)
 | 
						|
  "Return a list of index pairs of symbol-like parts of LINE."
 | 
						|
  ;; This would be a good application for a regex ...
 | 
						|
  (let (result)
 | 
						|
    (flet ((grab (start end)
 | 
						|
             (unless (member (subseq line start end) '("ANSI" "CLHS"))
 | 
						|
               (push (list start end) result))))
 | 
						|
      (do ((begin nil)
 | 
						|
           (maybe-begin t)
 | 
						|
           (i 0 (1+ i)))
 | 
						|
          ((= i (length line))
 | 
						|
           ;; symbol at end of line
 | 
						|
           (when (and begin (or (> i (1+ begin))
 | 
						|
                                (not (member (char line begin) '(#\A #\I)))))
 | 
						|
             (grab begin i))
 | 
						|
           (nreverse result))
 | 
						|
        (cond
 | 
						|
          ((and begin (find (char line i) *symbol-delimiters*))
 | 
						|
           ;; symbol end; remember it if it's not "A" or "I"
 | 
						|
           (when (or (> i (1+ begin)) (not (member (char line begin) '(#\A #\I))))
 | 
						|
             (grab begin i))
 | 
						|
           (setf begin nil
 | 
						|
                 maybe-begin t))
 | 
						|
          ((and begin (not (find (char line i) *symbol-characters*)))
 | 
						|
           ;; Not a symbol: abort
 | 
						|
           (setf begin nil))
 | 
						|
          ((and maybe-begin (not begin) (find (char line i) *symbol-characters*))
 | 
						|
           ;; potential symbol begin at this position
 | 
						|
           (setf begin i
 | 
						|
                 maybe-begin nil))
 | 
						|
          ((find (char line i) *symbol-delimiters*)
 | 
						|
           ;; potential symbol begin after this position
 | 
						|
           (setf maybe-begin t))
 | 
						|
          (t
 | 
						|
           ;; Not reading a symbol, not at potential start of symbol
 | 
						|
           (setf maybe-begin nil)))))))
 | 
						|
 | 
						|
(defun texinfo-line (line)
 | 
						|
  "Format symbols in LINE texinfo-style: either as code or as
 | 
						|
variables if the symbol in question is contained in symbols
 | 
						|
*TEXINFO-VARIABLES*."
 | 
						|
  (with-output-to-string (result)
 | 
						|
    (let ((last 0))
 | 
						|
      (dolist (symbol/index (locate-symbols line))
 | 
						|
        (write-string (subseq line last (first symbol/index)) result)
 | 
						|
        (let ((symbol-name (apply #'subseq line symbol/index)))
 | 
						|
          (format result (if (member symbol-name *texinfo-variables*
 | 
						|
                                     :test #'string=)
 | 
						|
                             "@var{~A}"
 | 
						|
                             "@code{~A}")
 | 
						|
                  (string-downcase symbol-name)))
 | 
						|
        (setf last (second symbol/index)))
 | 
						|
      (write-string (subseq line last) result))))
 | 
						|
 | 
						|
;;; lisp sections
 | 
						|
 | 
						|
(defun lisp-section-p (line line-number lines)
 | 
						|
  "Returns T if the given LINE looks like start of lisp code --
 | 
						|
ie. if it starts with whitespace followed by a paren or
 | 
						|
semicolon, and the previous line is empty"
 | 
						|
  (let ((offset (indentation line)))
 | 
						|
    (and offset
 | 
						|
         (plusp offset)
 | 
						|
         (find (find-if-not #'whitespacep line) "(;")
 | 
						|
         (empty-p (1- line-number) lines))))
 | 
						|
 | 
						|
(defun collect-lisp-section (lines line-number)
 | 
						|
  (let ((lisp (loop for index = line-number then (1+ index)
 | 
						|
                    for line = (and (< index (length lines)) (svref lines index))
 | 
						|
                    while (indentation line)
 | 
						|
                    collect line)))
 | 
						|
    (values (length lisp) `("@lisp" ,@lisp "@end lisp"))))
 | 
						|
 | 
						|
;;; itemized sections
 | 
						|
 | 
						|
(defun maybe-itemize-offset (line)
 | 
						|
  "Return NIL or the indentation offset if LINE looks like it starts
 | 
						|
an item in an itemization."
 | 
						|
  (let* ((offset (indentation line))
 | 
						|
         (char (when offset (char line offset))))
 | 
						|
    (and offset
 | 
						|
         (member char *itemize-start-characters* :test #'char=)
 | 
						|
         (char= #\Space (find-if-not (lambda (c) (char= c char))
 | 
						|
                                     line :start offset))
 | 
						|
         offset)))
 | 
						|
 | 
						|
(defun collect-maybe-itemized-section (lines starting-line)
 | 
						|
  ;; Return index of next line to be processed outside
 | 
						|
  (let ((this-offset (maybe-itemize-offset (svref lines starting-line)))
 | 
						|
        (result nil)
 | 
						|
        (lines-consumed 0))
 | 
						|
    (loop for line-number from starting-line below (length lines)
 | 
						|
       for line = (svref lines line-number)
 | 
						|
       for indentation = (indentation line)
 | 
						|
       for offset = (maybe-itemize-offset line)
 | 
						|
       do (cond
 | 
						|
            ((not indentation)
 | 
						|
             ;; empty line -- inserts paragraph.
 | 
						|
             (push "" result)
 | 
						|
             (incf lines-consumed))
 | 
						|
            ((and offset (> indentation this-offset))
 | 
						|
             ;; nested itemization -- handle recursively
 | 
						|
             ;; FIXME: tables in itemizations go wrong
 | 
						|
             (multiple-value-bind (sub-lines-consumed sub-itemization)
 | 
						|
                 (collect-maybe-itemized-section lines line-number)
 | 
						|
               (when sub-lines-consumed
 | 
						|
                 (incf line-number (1- sub-lines-consumed)) ; +1 on next loop
 | 
						|
                 (incf lines-consumed sub-lines-consumed)
 | 
						|
                 (setf result (nconc (nreverse sub-itemization) result)))))
 | 
						|
            ((and offset (= indentation this-offset))
 | 
						|
             ;; start of new item
 | 
						|
             (push (format nil "@item ~A"
 | 
						|
                           (texinfo-line (subseq line (1+ offset))))
 | 
						|
                   result)
 | 
						|
             (incf lines-consumed))
 | 
						|
            ((and (not offset) (> indentation this-offset))
 | 
						|
             ;; continued item from previous line
 | 
						|
             (push (texinfo-line line) result)
 | 
						|
             (incf lines-consumed))
 | 
						|
            (t
 | 
						|
             ;; end of itemization
 | 
						|
             (loop-finish))))
 | 
						|
    ;; a single-line itemization isn't.
 | 
						|
    (if (> (count-if (lambda (line) (> (length line) 0)) result) 1)
 | 
						|
        (values lines-consumed `("@itemize" ,@(reverse result) "@end itemize"))
 | 
						|
        nil)))
 | 
						|
 | 
						|
;;; table sections
 | 
						|
 | 
						|
(defun tabulation-body-p (offset line-number lines)
 | 
						|
  (when (< line-number (length lines))
 | 
						|
    (let ((offset2 (indentation (svref lines line-number))))
 | 
						|
      (and offset2 (< offset offset2)))))
 | 
						|
 | 
						|
(defun tabulation-p (offset line-number lines direction)
 | 
						|
  (let ((step  (ecase direction
 | 
						|
                 (:backwards (1- line-number))
 | 
						|
                 (:forwards (1+ line-number)))))
 | 
						|
    (when (and (plusp line-number) (< line-number (length lines)))
 | 
						|
      (and (eql offset (indentation (svref lines line-number)))
 | 
						|
           (or (when (eq direction :backwards)
 | 
						|
                 (empty-p step lines))
 | 
						|
               (tabulation-p offset step lines direction)
 | 
						|
               (tabulation-body-p offset step lines))))))
 | 
						|
 | 
						|
(defun maybe-table-offset (line-number lines)
 | 
						|
  "Return NIL or the indentation offset if LINE looks like it starts
 | 
						|
an item in a tabulation. Ie, if it is (1) indented, (2) preceded by an
 | 
						|
empty line, another tabulation label, or a tabulation body, (3) and
 | 
						|
followed another tabulation label or a tabulation body."
 | 
						|
  (let* ((line (svref lines line-number))
 | 
						|
         (offset (indentation line))
 | 
						|
         (prev (1- line-number))
 | 
						|
         (next (1+ line-number)))
 | 
						|
    (when (and offset (plusp offset))
 | 
						|
      (and (or (empty-p prev lines)
 | 
						|
               (tabulation-body-p offset prev lines)
 | 
						|
               (tabulation-p offset prev lines :backwards))
 | 
						|
           (or (tabulation-body-p offset next lines)
 | 
						|
               (tabulation-p offset next lines :forwards))
 | 
						|
           offset))))
 | 
						|
 | 
						|
;;; FIXME: This and itemization are very similar: could they share
 | 
						|
;;; some code, mayhap?
 | 
						|
 | 
						|
(defun collect-maybe-table-section (lines starting-line)
 | 
						|
  ;; Return index of next line to be processed outside
 | 
						|
  (let ((this-offset (maybe-table-offset starting-line lines))
 | 
						|
        (result nil)
 | 
						|
        (lines-consumed 0))
 | 
						|
    (loop for line-number from starting-line below (length lines)
 | 
						|
          for line = (svref lines line-number)
 | 
						|
          for indentation = (indentation line)
 | 
						|
          for offset = (maybe-table-offset line-number lines)
 | 
						|
          do (cond
 | 
						|
               ((not indentation)
 | 
						|
                ;; empty line -- inserts paragraph.
 | 
						|
                (push "" result)
 | 
						|
                (incf lines-consumed))
 | 
						|
               ((and offset (= indentation this-offset))
 | 
						|
                ;; start of new item, or continuation of previous item
 | 
						|
                (if (and result (search "@item" (car result) :test #'char=))
 | 
						|
                    (push (format nil "@itemx ~A" (texinfo-line line))
 | 
						|
                          result)
 | 
						|
                    (progn
 | 
						|
                      (push "" result)
 | 
						|
                      (push (format nil "@item ~A" (texinfo-line line))
 | 
						|
                            result)))
 | 
						|
                (incf lines-consumed))
 | 
						|
               ((> indentation this-offset)
 | 
						|
                ;; continued item from previous line
 | 
						|
                (push (texinfo-line line) result)
 | 
						|
                (incf lines-consumed))
 | 
						|
               (t
 | 
						|
                ;; end of itemization
 | 
						|
                (loop-finish))))
 | 
						|
     ;; a single-line table isn't.
 | 
						|
    (if (> (count-if (lambda (line) (> (length line) 0)) result) 1)
 | 
						|
        (values lines-consumed
 | 
						|
                `("" "@table @emph" ,@(reverse result) "@end table" ""))
 | 
						|
        nil)))
 | 
						|
 | 
						|
;;; section markup
 | 
						|
 | 
						|
(defmacro with-maybe-section (index &rest forms)
 | 
						|
  `(multiple-value-bind (count collected) (progn ,@forms)
 | 
						|
    (when count
 | 
						|
      (dolist (line collected)
 | 
						|
        (write-line line *texinfo-output*))
 | 
						|
      (incf ,index (1- count)))))
 | 
						|
 | 
						|
(defun write-texinfo-string (string &optional lambda-list)
 | 
						|
  "Try to guess as much formatting for a raw docstring as possible."
 | 
						|
  (let ((*texinfo-variables* (flatten lambda-list))
 | 
						|
        (lines (string-lines (escape-for-texinfo string nil))))
 | 
						|
      (loop for line-number from 0 below (length lines)
 | 
						|
            for line = (svref lines line-number)
 | 
						|
            do (cond
 | 
						|
                 ((with-maybe-section line-number
 | 
						|
                    (and (lisp-section-p line line-number lines)
 | 
						|
                         (collect-lisp-section lines line-number))))
 | 
						|
                 ((with-maybe-section line-number
 | 
						|
                    (and (maybe-itemize-offset line)
 | 
						|
                         (collect-maybe-itemized-section lines line-number))))
 | 
						|
                 ((with-maybe-section line-number
 | 
						|
                    (and (maybe-table-offset line-number lines)
 | 
						|
                         (collect-maybe-table-section lines line-number))))
 | 
						|
                 (t
 | 
						|
                  (write-line (texinfo-line line) *texinfo-output*))))))
 | 
						|
 | 
						|
;;;; texinfo formatting tools
 | 
						|
 | 
						|
(defun hide-superclass-p (class-name super-name)
 | 
						|
  (let ((super-package (symbol-package super-name)))
 | 
						|
    (or
 | 
						|
     ;; KLUDGE: We assume that we don't want to advertise internal
 | 
						|
     ;; classes in CP-lists, unless the symbol we're documenting is
 | 
						|
     ;; internal as well.
 | 
						|
     (and (member super-package #.'(mapcar #'find-package *undocumented-packages*))
 | 
						|
          (not (eq super-package (symbol-package class-name))))
 | 
						|
     ;; KLUDGE: We don't generally want to advertise SIMPLE-ERROR or
 | 
						|
     ;; SIMPLE-CONDITION in the CPLs of conditions that inherit them
 | 
						|
     ;; simply as a matter of convenience. The assumption here is that
 | 
						|
     ;; the inheritance is incidental unless the name of the condition
 | 
						|
     ;; begins with SIMPLE-.
 | 
						|
     (and (member super-name '(simple-error simple-condition))
 | 
						|
          (let ((prefix "SIMPLE-"))
 | 
						|
            (mismatch prefix (string class-name) :end2 (length prefix)))
 | 
						|
          t ; don't return number from MISMATCH
 | 
						|
          ))))
 | 
						|
 | 
						|
(defun hide-slot-p (symbol slot)
 | 
						|
  ;; FIXME: There is no pricipal reason to avoid the slot docs fo
 | 
						|
  ;; structures and conditions, but their DOCUMENTATION T doesn't
 | 
						|
  ;; currently work with them the way we'd like.
 | 
						|
  (not (and (typep (find-class symbol nil) 'standard-class)
 | 
						|
            (docstring slot t))))
 | 
						|
 | 
						|
(defun texinfo-anchor (doc)
 | 
						|
  (format *texinfo-output* "@anchor{~A}~%" (node-name doc)))
 | 
						|
 | 
						|
;;; KLUDGE: &AUX *PRINT-PRETTY* here means "no linebreaks please"
 | 
						|
(defun texinfo-begin (doc &aux *print-pretty*)
 | 
						|
  (let ((kind (get-kind doc)))
 | 
						|
    (format *texinfo-output* "@~A {~:(~A~)} ~({~A}~@[ ~{~A~^ ~}~]~)~%"
 | 
						|
            (case kind
 | 
						|
              ((package constant variable)
 | 
						|
               "defvr")
 | 
						|
              ((structure class condition type)
 | 
						|
               "deftp")
 | 
						|
              (t
 | 
						|
               "deffn"))
 | 
						|
            (map 'string (lambda (char) (if (eql char #\-) #\Space char)) (string kind))
 | 
						|
            (title-name doc)
 | 
						|
            ;; &foo would be amusingly bold in the pdf thanks to TeX/Texinfo
 | 
						|
            ;; interactions,so we escape the ampersand -- amusingly for TeX.
 | 
						|
            ;; sbcl.texinfo defines macros that expand @&key and friends to &key.
 | 
						|
            (mapcar (lambda (name)
 | 
						|
                      (if (member name lambda-list-keywords)
 | 
						|
                          (format nil "@~A" name)
 | 
						|
                          name))
 | 
						|
                    (lambda-list doc)))))
 | 
						|
 | 
						|
(defun texinfo-index (doc)
 | 
						|
  (let ((title (title-name doc)))
 | 
						|
    (case (get-kind doc)
 | 
						|
      ((structure type class condition)
 | 
						|
       (format *texinfo-output* "@tindex ~A~%" title))
 | 
						|
      ((variable constant)
 | 
						|
       (format *texinfo-output* "@vindex ~A~%" title))
 | 
						|
      ((compiler-macro function method-combination macro generic-function)
 | 
						|
       (format *texinfo-output* "@findex ~A~%" title)))))
 | 
						|
 | 
						|
(defun texinfo-inferred-body (doc)
 | 
						|
  (when (member (get-kind doc) '(class structure condition))
 | 
						|
    (let ((name (get-name doc)))
 | 
						|
      ;; class precedence list
 | 
						|
      (format *texinfo-output* "Class precedence list: @code{~(~{@lw{~A}~^, ~}~)}~%~%"
 | 
						|
              (remove-if (lambda (class)  (hide-superclass-p name class))
 | 
						|
                         (mapcar #'class-name (ensure-class-precedence-list (find-class name)))))
 | 
						|
      ;; slots
 | 
						|
      (let ((slots (remove-if (lambda (slot) (hide-slot-p name slot))
 | 
						|
                              (class-direct-slots (find-class name)))))
 | 
						|
        (when slots
 | 
						|
          (format *texinfo-output* "Slots:~%@itemize~%")
 | 
						|
          (dolist (slot slots)
 | 
						|
            (format *texinfo-output*
 | 
						|
                    "@item ~(@code{~A}~#[~:; --- ~]~
 | 
						|
                      ~:{~2*~@[~2:*~A~P: ~{@code{@w{~S}}~^, ~}~]~:^; ~}~)~%~%"
 | 
						|
                    (slot-definition-name slot)
 | 
						|
                    (remove
 | 
						|
                     nil
 | 
						|
                     (mapcar
 | 
						|
                      (lambda (name things)
 | 
						|
                        (if things
 | 
						|
                            (list name (length things) things)))
 | 
						|
                      '("initarg" "reader"  "writer")
 | 
						|
                      (list
 | 
						|
                       (slot-definition-initargs slot)
 | 
						|
                       (slot-definition-readers slot)
 | 
						|
                       (slot-definition-writers slot)))))
 | 
						|
            ;; FIXME: Would be neater to handler as children
 | 
						|
            (write-texinfo-string (docstring slot t)))
 | 
						|
          (format *texinfo-output* "@end itemize~%~%"))))))
 | 
						|
 | 
						|
(defun texinfo-body (doc)
 | 
						|
  (write-texinfo-string (get-string doc)))
 | 
						|
 | 
						|
(defun texinfo-end (doc)
 | 
						|
  (write-line (case (get-kind doc)
 | 
						|
                ((package variable constant) "@end defvr")
 | 
						|
                ((structure type class condition) "@end deftp")
 | 
						|
                (t "@end deffn"))
 | 
						|
              *texinfo-output*))
 | 
						|
 | 
						|
(defun write-texinfo (doc)
 | 
						|
  "Writes TexInfo for a DOCUMENTATION instance to *TEXINFO-OUTPUT*."
 | 
						|
  (texinfo-anchor doc)
 | 
						|
  (texinfo-begin doc)
 | 
						|
  (texinfo-index doc)
 | 
						|
  (texinfo-inferred-body doc)
 | 
						|
  (texinfo-body doc)
 | 
						|
  (texinfo-end doc)
 | 
						|
  ;; FIXME: Children should be sorted one way or another
 | 
						|
  (mapc #'write-texinfo (get-children doc)))
 | 
						|
 | 
						|
;;;; main logic
 | 
						|
 | 
						|
(defun collect-gf-documentation (gf)
 | 
						|
  "Collects method documentation for the generic function GF"
 | 
						|
  (loop for method in (generic-function-methods gf)
 | 
						|
        for doc = (maybe-documentation method t)
 | 
						|
        when doc
 | 
						|
        collect doc))
 | 
						|
 | 
						|
(defun collect-name-documentation (name)
 | 
						|
  (loop for type in *documentation-types*
 | 
						|
        for doc = (maybe-documentation name type)
 | 
						|
        when doc
 | 
						|
        collect doc))
 | 
						|
 | 
						|
(defun collect-symbol-documentation (symbol)
 | 
						|
  "Collects all docs for a SYMBOL and (SETF SYMBOL), returns a list of
 | 
						|
the form DOC instances. See `*documentation-types*' for the possible
 | 
						|
values of doc-type."
 | 
						|
  (nconc (collect-name-documentation symbol)
 | 
						|
         (collect-name-documentation (list 'setf symbol))))
 | 
						|
 | 
						|
(defun collect-documentation (package)
 | 
						|
  "Collects all documentation for all external symbols of the given
 | 
						|
package, as well as for the package itself."
 | 
						|
  (let* ((*documentation-package* (find-package package))
 | 
						|
         (docs nil))
 | 
						|
    (check-type package package)
 | 
						|
    (do-external-symbols (symbol package)
 | 
						|
      (setf docs (nconc (collect-symbol-documentation symbol) docs)))
 | 
						|
    (let ((doc (maybe-documentation *documentation-package* t)))
 | 
						|
      (when doc
 | 
						|
        (push doc docs)))
 | 
						|
    docs))
 | 
						|
 | 
						|
(defmacro with-texinfo-file (pathname &body forms)
 | 
						|
  `(with-open-file (*texinfo-output* ,pathname
 | 
						|
                                    :direction :output
 | 
						|
                                    :if-does-not-exist :create
 | 
						|
                                    :if-exists :supersede)
 | 
						|
    ,@forms))
 | 
						|
 | 
						|
(defun write-ifnottex ()
 | 
						|
  ;; We use @&key, etc to escape & from TeX in lambda lists -- so we need to
 | 
						|
  ;; define them for info as well.
 | 
						|
  (flet ((macro (name)
 | 
						|
                 (let ((string (string-downcase name)))
 | 
						|
                   (format *texinfo-output* "@macro ~A~%~A~%@end macro~%" string string))))
 | 
						|
    (macro '&allow-other-keys)
 | 
						|
    (macro '&optional)
 | 
						|
    (macro '&rest)
 | 
						|
    (macro '&key)
 | 
						|
    (macro '&body)))
 | 
						|
 | 
						|
(defun generate-includes (directory packages &key (base-package :cl-user))
 | 
						|
  "Create files in `directory' containing Texinfo markup of all
 | 
						|
docstrings of each exported symbol in `packages'. `directory' is
 | 
						|
created if necessary. If you supply a namestring that doesn't end in a
 | 
						|
slash, you lose. The generated files are of the form
 | 
						|
\"<doc-type>_<packagename>_<symbol-name>.texinfo\" and can be included
 | 
						|
via @include statements. Texinfo syntax-significant characters are
 | 
						|
escaped in symbol names, but if a docstring contains invalid Texinfo
 | 
						|
markup, you lose."
 | 
						|
  (handler-bind ((warning #'muffle-warning))
 | 
						|
    (let ((directory (merge-pathnames (pathname directory)))
 | 
						|
          (*base-package* (find-package base-package)))
 | 
						|
      (ensure-directories-exist directory)
 | 
						|
      (dolist (package packages)
 | 
						|
        (dolist (doc (collect-documentation (find-package package)))
 | 
						|
          (with-texinfo-file (merge-pathnames (include-pathname doc) directory)
 | 
						|
            (write-texinfo doc))))
 | 
						|
      (with-texinfo-file (merge-pathnames "ifnottex.texinfo" directory)
 | 
						|
        (write-ifnottex))
 | 
						|
      directory)))
 | 
						|
 | 
						|
(defun document-package (package &optional filename)
 | 
						|
  "Create a file containing all available documentation for the
 | 
						|
exported symbols of `package' in Texinfo format. If `filename' is not
 | 
						|
supplied, a file \"<packagename>.texinfo\" is generated.
 | 
						|
 | 
						|
The definitions can be referenced using Texinfo statements like
 | 
						|
@ref{<doc-type>_<packagename>_<symbol-name>.texinfo}. Texinfo
 | 
						|
syntax-significant characters are escaped in symbol names, but if a
 | 
						|
docstring contains invalid Texinfo markup, you lose."
 | 
						|
  (handler-bind ((warning #'muffle-warning))
 | 
						|
    (let* ((package (find-package package))
 | 
						|
           (filename (or filename (make-pathname
 | 
						|
                                   :name (string-downcase (short-package-name package))
 | 
						|
                                   :type "texinfo")))
 | 
						|
           (docs (sort (collect-documentation package) #'documentation<)))
 | 
						|
      (with-texinfo-file filename
 | 
						|
        (dolist (doc docs)
 | 
						|
          (write-texinfo doc)))
 | 
						|
      filename)))
 |