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Diffstat (limited to 'doc/docstrings.lisp')
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diff --git a/doc/docstrings.lisp b/doc/docstrings.lisp new file mode 100644 index 0000000000..51dda07d09 --- /dev/null +++ b/doc/docstrings.lisp @@ -0,0 +1,881 @@ +;;; -*- lisp -*- + +;;;; A docstring extractor for the sbcl manual. Creates +;;;; @include-ready documentation from the docstrings of exported +;;;; symbols of specified packages. + +;;;; This software is part of the SBCL software system. SBCL is in the +;;;; public domain and is provided with absolutely no warranty. See +;;;; the COPYING file for more information. +;;;; +;;;; Written by Rudi Schlatte <rudi@constantly.at>, mangled +;;;; by Nikodemus Siivola. + +;;;; TODO +;;;; * Verbatim text +;;;; * Quotations +;;;; * Method documentation untested +;;;; * Method sorting, somehow +;;;; * Index for macros & constants? +;;;; * This is getting complicated enough that tests would be good +;;;; * Nesting (currently only nested itemizations work) +;;;; * doc -> internal form -> texinfo (so that non-texinfo format are also +;;;; easily generated) + +;;;; FIXME: The description below is no longer complete. This +;;;; should possibly be turned into a contrib with proper documentation. + +;;;; Formatting heuristics (tweaked to format SAVE-LISP-AND-DIE sanely): +;;;; +;;;; Formats SYMBOL as @code{symbol}, or @var{symbol} if symbol is in +;;;; the argument list of the defun / defmacro. +;;;; +;;;; Lines starting with * or - that are followed by intented lines +;;;; are marked up with @itemize. +;;;; +;;;; Lines containing only a SYMBOL that are followed by indented +;;;; lines are marked up as @table @code, with the SYMBOL as the item. + +(eval-when (:compile-toplevel :load-toplevel :execute) + (require 'sb-introspect)) + +(defpackage :sb-texinfo + (:use :cl :sb-mop) + (:shadow #:documentation) + (:export #:generate-includes #:document-package) + (:documentation + "Tools to generate TexInfo documentation from docstrings.")) + +(in-package :sb-texinfo) + +;;;; various specials and parameters + +(defvar *texinfo-output*) +(defvar *texinfo-variables*) +(defvar *documentation-package*) +(defvar *base-package*) + +(defparameter *undocumented-packages* '(sb-pcl sb-int sb-kernel sb-sys sb-c)) + +(defparameter *documentation-types* + '(compiler-macro + function + method-combination + setf + ;;structure ; also handled by `type' + type + variable) + "A list of symbols accepted as second argument of `documentation'") + +(defparameter *character-replacements* + '((#\* . "star") (#\/ . "slash") (#\+ . "plus") + (#\< . "lt") (#\> . "gt") + (#\= . "equals")) + "Characters and their replacement names that `alphanumize' uses. If +the replacements contain any of the chars they're supposed to replace, +you deserve to lose.") + +(defparameter *characters-to-drop* '(#\\ #\` #\') + "Characters that should be removed by `alphanumize'.") + +(defparameter *texinfo-escaped-chars* "@{}" + "Characters that must be escaped with #\@ for Texinfo.") + +(defparameter *itemize-start-characters* '(#\* #\-) + "Characters that might start an itemization in docstrings when + at the start of a line.") + +(defparameter *symbol-characters* "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890*:-+&#'" + "List of characters that make up symbols in a docstring.") + +(defparameter *symbol-delimiters* " ,.!?;") + +(defparameter *ordered-documentation-kinds* + '(package type structure condition class macro)) + +;;;; utilities + +(defun flatten (list) + (cond ((null list) + nil) + ((consp (car list)) + (nconc (flatten (car list)) (flatten (cdr list)))) + ((null (cdr list)) + (cons (car list) nil)) + (t + (cons (car list) (flatten (cdr list)))))) + +(defun whitespacep (char) + (find char #(#\tab #\space #\page))) + +(defun setf-name-p (name) + (or (symbolp name) + (and (listp name) (= 2 (length name)) (eq (car name) 'setf)))) + +(defgeneric specializer-name (specializer)) + +(defmethod specializer-name ((specializer eql-specializer)) + (list 'eql (eql-specializer-object specializer))) + +(defmethod specializer-name ((specializer class)) + (class-name specializer)) + +(defun ensure-class-precedence-list (class) + (unless (class-finalized-p class) + (finalize-inheritance class)) + (class-precedence-list class)) + +(defun specialized-lambda-list (method) + ;; courtecy of AMOP p. 61 + (let* ((specializers (method-specializers method)) + (lambda-list (method-lambda-list method)) + (n-required (length specializers))) + (append (mapcar (lambda (arg specializer) + (if (eq specializer (find-class 't)) + arg + `(,arg ,(specializer-name specializer)))) + (subseq lambda-list 0 n-required) + specializers) + (subseq lambda-list n-required)))) + +(defun string-lines (string) + "Lines in STRING as a vector." + (coerce (with-input-from-string (s string) + (loop for line = (read-line s nil nil) + while line collect line)) + 'vector)) + +(defun indentation (line) + "Position of first non-SPACE character in LINE." + (position-if-not (lambda (c) (char= c #\Space)) line)) + +(defun docstring (x doc-type) + (cl:documentation x doc-type)) + +(defun flatten-to-string (list) + (format nil "~{~A~^-~}" (flatten list))) + +(defun alphanumize (original) + "Construct a string without characters like *`' that will f-star-ck +up filename handling. See `*character-replacements*' and +`*characters-to-drop*' for customization." + (let ((name (remove-if (lambda (x) (member x *characters-to-drop*)) + (if (listp original) + (flatten-to-string original) + (string original)))) + (chars-to-replace (mapcar #'car *character-replacements*))) + (flet ((replacement-delimiter (index) + (cond ((or (< index 0) (>= index (length name))) "") + ((alphanumericp (char name index)) "-") + (t "")))) + (loop for index = (position-if #'(lambda (x) (member x chars-to-replace)) + name) + while index + do (setf name (concatenate 'string (subseq name 0 index) + (replacement-delimiter (1- index)) + (cdr (assoc (aref name index) + *character-replacements*)) + (replacement-delimiter (1+ index)) + (subseq name (1+ index)))))) + name)) + +;;;; generating various names + +(defgeneric name (thing) + (:documentation "Name for a documented thing. Names are either +symbols or lists of symbols.")) + +(defmethod name ((symbol symbol)) + symbol) + +(defmethod name ((cons cons)) + cons) + +(defmethod name ((package package)) + (short-package-name package)) + +(defmethod name ((method method)) + (list + (generic-function-name (method-generic-function method)) + (method-qualifiers method) + (specialized-lambda-list method))) + +;;; Node names for DOCUMENTATION instances + +(defgeneric name-using-kind/name (kind name doc)) + +(defmethod name-using-kind/name (kind (name string) doc) + (declare (ignore kind doc)) + name) + +(defmethod name-using-kind/name (kind (name symbol) doc) + (declare (ignore kind)) + (format nil "~@[~A:~]~A" (short-package-name (get-package doc)) name)) + +(defmethod name-using-kind/name (kind (name list) doc) + (declare (ignore kind)) + (assert (setf-name-p name)) + (format nil "(setf ~@[~A:~]~A)" (short-package-name (get-package doc)) (second name))) + +(defmethod name-using-kind/name ((kind (eql 'method)) name doc) + (format nil "~A~{ ~A~} ~A" + (name-using-kind/name nil (first name) doc) + (second name) + (third name))) + +(defun node-name (doc) + "Returns TexInfo node name as a string for a DOCUMENTATION instance." + (let ((kind (get-kind doc))) + (format nil "~:(~A~) ~(~A~)" kind (name-using-kind/name kind (get-name doc) doc)))) + +(defun short-package-name (package) + (unless (eq package *base-package*) + (car (sort (copy-list (cons (package-name package) (package-nicknames package))) + #'< :key #'length)))) + +;;; Definition titles for DOCUMENTATION instances + +(defgeneric title-using-kind/name (kind name doc)) + +(defmethod title-using-kind/name (kind (name string) doc) + (declare (ignore kind doc)) + name) + +(defmethod title-using-kind/name (kind (name symbol) doc) + (declare (ignore kind)) + (format nil "~@[~A:~]~A" (short-package-name (get-package doc)) name)) + +(defmethod title-using-kind/name (kind (name list) doc) + (declare (ignore kind)) + (assert (setf-name-p name)) + (format nil "(setf ~@[~A:~]~A)" (short-package-name (get-package doc)) (second name))) + +(defmethod title-using-kind/name ((kind (eql 'method)) name doc) + (format nil "~{~A ~}~A" + (second name) + (title-using-kind/name nil (first name) doc))) + +(defun title-name (doc) + "Returns a string to be used as name of the definition." + (string-downcase (title-using-kind/name (get-kind doc) (get-name doc) doc))) + +(defun include-pathname (doc) + (let* ((kind (get-kind doc)) + (name (nstring-downcase + (if (eq 'package kind) + (format nil "package-~A" (alphanumize (get-name doc))) + (format nil "~A-~A-~A" + (case (get-kind doc) + ((function generic-function) "fun") + (structure "struct") + (variable "var") + (otherwise (symbol-name (get-kind doc)))) + (alphanumize (let ((*base-package* nil)) + (short-package-name (get-package doc)))) + (alphanumize (get-name doc))))))) + (make-pathname :name name :type "texinfo"))) + +;;;; documentation class and related methods + +(defclass documentation () + ((name :initarg :name :reader get-name) + (kind :initarg :kind :reader get-kind) + (string :initarg :string :reader get-string) + (children :initarg :children :initform nil :reader get-children) + (package :initform *documentation-package* :reader get-package))) + +(defmethod print-object ((documentation documentation) stream) + (print-unreadable-object (documentation stream :type t) + (princ (list (get-kind documentation) (get-name documentation)) stream))) + +(defgeneric make-documentation (x doc-type string)) + +(defmethod make-documentation ((x package) doc-type string) + (declare (ignore doc-type)) + (make-instance 'documentation + :name (name x) + :kind 'package + :string string)) + +(defmethod make-documentation (x (doc-type (eql 'function)) string) + (declare (ignore doc-type)) + (let* ((fdef (and (fboundp x) (fdefinition x))) + (name x) + (kind (cond ((and (symbolp x) (special-operator-p x)) + 'special-operator) + ((and (symbolp x) (macro-function x)) + 'macro) + ((typep fdef 'generic-function) + (assert (or (symbolp name) (setf-name-p name))) + 'generic-function) + (fdef + (assert (or (symbolp name) (setf-name-p name))) + 'function))) + (children (when (eq kind 'generic-function) + (collect-gf-documentation fdef)))) + (make-instance 'documentation + :name (name x) + :string string + :kind kind + :children children))) + +(defmethod make-documentation ((x method) doc-type string) + (declare (ignore doc-type)) + (make-instance 'documentation + :name (name x) + :kind 'method + :string string)) + +(defmethod make-documentation (x (doc-type (eql 'type)) string) + (make-instance 'documentation + :name (name x) + :string string + :kind (etypecase (find-class x nil) + (structure-class 'structure) + (standard-class 'class) + (sb-pcl::condition-class 'condition) + ((or built-in-class null) 'type)))) + +(defmethod make-documentation (x (doc-type (eql 'variable)) string) + (make-instance 'documentation + :name (name x) + :string string + :kind (if (constantp x) + 'constant + 'variable))) + +(defmethod make-documentation (x (doc-type (eql 'setf)) string) + (declare (ignore doc-type)) + (make-instance 'documentation + :name (name x) + :kind 'setf-expander + :string string)) + +(defmethod make-documentation (x doc-type string) + (make-instance 'documentation + :name (name x) + :kind doc-type + :string string)) + +(defun maybe-documentation (x doc-type) + "Returns a DOCUMENTATION instance for X and DOC-TYPE, or NIL if +there is no corresponding docstring." + (let ((docstring (docstring x doc-type))) + (when docstring + (make-documentation x doc-type docstring)))) + +(defun lambda-list (doc) + (case (get-kind doc) + ((package constant variable type structure class condition nil) + nil) + (method + (third (get-name doc))) + (t + ;; KLUDGE: Eugh. + ;; + ;; believe it or not, the above comment was written before CSR + ;; came along and obfuscated this. (2005-07-04) + (when (symbolp (get-name doc)) + (labels ((clean (x &key optional key) + (typecase x + (atom x) + ((cons (member &optional)) + (cons (car x) (clean (cdr x) :optional t))) + ((cons (member &key)) + (cons (car x) (clean (cdr x) :key t))) + ((cons (member &whole &environment)) + ;; Skip these + (clean (cdr x) :optional optional :key key)) + ((cons cons) + (cons + (cond (key (if (consp (caar x)) + (caaar x) + (caar x))) + (optional (caar x)) + (t (clean (car x)))) + (clean (cdr x) :key key :optional optional))) + (cons + (cons + (cond ((or key optional) (car x)) + (t (clean (car x)))) + (clean (cdr x) :key key :optional optional)))))) + (clean (sb-introspect:function-lambda-list (get-name doc)))))))) + +(defun get-string-name (x) + (let ((name (get-name x))) + (cond ((symbolp name) + (symbol-name name)) + ((and (consp name) (eq 'setf (car name))) + (symbol-name (second name))) + ((stringp name) + name) + (t + (error "Don't know which symbol to use for name ~S" name))))) + +(defun documentation< (x y) + (let ((p1 (position (get-kind x) *ordered-documentation-kinds*)) + (p2 (position (get-kind y) *ordered-documentation-kinds*))) + (if (or (not (and p1 p2)) (= p1 p2)) + (string< (get-string-name x) (get-string-name y)) + (< p1 p2)))) + +;;;; turning text into texinfo + +(defun escape-for-texinfo (string &optional downcasep) + "Return STRING with characters in *TEXINFO-ESCAPED-CHARS* escaped +with #\@. Optionally downcase the result." + (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))) |