;;;; pretty streams
;;; There are three different units for measuring character positions:
-;;; COLUMN - offset (if characters) from the start of the current line.
-;;; INDEX - index into the output buffer.
-;;; POSN - some position in the stream of characters cycling through
-;;; the output buffer.
+;;; COLUMN - offset (if characters) from the start of the current line
+;;; INDEX - index into the output buffer
+;;; POSN - some position in the stream of characters cycling through
+;;; the output buffer
(deftype column ()
'(and fixnum unsigned-byte))
;;; The INDEX type is picked up from the kernel package.
(defconstant default-line-length 80)
-(defstruct (pretty-stream (:include sb!kernel:lisp-stream
+(defstruct (pretty-stream (:include sb!kernel:ansi-stream
(:out #'pretty-out)
(:sout #'pretty-sout)
(:misc #'pretty-misc))
- (:constructor make-pretty-stream (target)))
+ (:constructor make-pretty-stream (target))
+ (:copier nil))
;; Where the output is going to finally go.
- (target (required-argument) :type stream)
+ (target (missing-arg) :type stream)
;; Line length we should format to. Cached here so we don't have to keep
;; extracting it from the target stream.
(line-length (or *print-right-margin*
;; zero, but if we end up with a very long line with no breaks in it we
;; might have to output part of it. Then this will no longer be zero.
(buffer-start-column (or (sb!impl::charpos target) 0) :type column)
- ;; The line number we are currently on. Used for *print-lines* abrevs and
- ;; to tell when sections have been split across multiple lines.
+ ;; The line number we are currently on. Used for *PRINT-LINES*
+ ;; abbreviations and to tell when sections have been split across
+ ;; multiple lines.
(line-number 0 :type index)
+ ;; the value of *PRINT-LINES* captured at object creation time. We
+ ;; use this, instead of the dynamic *PRINT-LINES*, to avoid
+ ;; weirdness like
+ ;; (let ((*print-lines* 50))
+ ;; (pprint-logical-block ..
+ ;; (dotimes (i 10)
+ ;; (let ((*print-lines* 8))
+ ;; (print (aref possiblybigthings i) prettystream)))))
+ ;; terminating the output of the entire logical blockafter 8 lines.
+ (print-lines *print-lines* :type (or index null) :read-only t)
;; Stack of logical blocks in effect at the buffer start.
(blocks (list (make-logical-block)) :type list)
;; Buffer holding the per-line prefix active at the buffer start.
(declare (type posn posn) (type pretty-stream stream)
(values posn))
(index-column (posn-index posn stream) stream))
+
+;;; Is it OK to do pretty printing on this stream at this time?
+(defun print-pretty-on-stream-p (stream)
+ (and (pretty-stream-p stream)
+ *print-pretty*))
\f
;;;; stream interface routines
\f
;;;; logical blocks
-(defstruct logical-block
+(defstruct (logical-block (:copier nil))
;; The column this logical block started in.
(start-column 0 :type column)
;; The column the current section started in.
\f
;;;; the pending operation queue
-(defstruct (queued-op (:constructor nil))
+(defstruct (queued-op (:constructor nil)
+ (:copier nil))
(posn 0 :type posn))
(defmacro enqueue (stream type &rest args)
- (let ((constructor (intern (concatenate 'string
- "MAKE-"
- (symbol-name type)))))
+ (let ((constructor (symbolicate "MAKE-" type)))
(once-only ((stream stream)
(entry `(,constructor :posn
(index-posn
,entry))))
(defstruct (section-start (:include queued-op)
- (:constructor nil))
+ (:constructor nil)
+ (:copier nil))
(depth 0 :type index)
(section-end nil :type (or null newline block-end)))
-(defstruct (newline
- (:include section-start))
- (kind (required-argument)
+(defstruct (newline (:include section-start)
+ (:copier nil))
+ (kind (missing-arg)
:type (member :linear :fill :miser :literal :mandatory)))
(defun enqueue-newline (stream kind)
(setf (section-start-section-end entry) newline))))
(maybe-output stream (or (eq kind :literal) (eq kind :mandatory))))
-(defstruct (indentation
- (:include queued-op))
- (kind (required-argument) :type (member :block :current))
+(defstruct (indentation (:include queued-op)
+ (:copier nil))
+ (kind (missing-arg) :type (member :block :current))
(amount 0 :type fixnum))
(defun enqueue-indent (stream kind amount)
(enqueue stream indentation :kind kind :amount amount))
-(defstruct (block-start
- (:include section-start))
+(defstruct (block-start (:include section-start)
+ (:copier nil))
(block-end nil :type (or null block-end))
(prefix nil :type (or null simple-string))
(suffix nil :type (or null simple-string)))
(setf (pretty-stream-pending-blocks stream)
(cons start pending-blocks))))
-(defstruct (block-end
- (:include queued-op))
+(defstruct (block-end (:include queued-op)
+ (:copier nil))
(suffix nil :type (or null simple-string)))
(defun end-logical-block (stream)
(pretty-sout stream suffix 0 (length suffix)))
(setf (block-start-block-end start) end)))
-(defstruct (tab
- (:include queued-op))
+(defstruct (tab (:include queued-op)
+ (:copier nil))
(sectionp nil :type (member t nil))
(relativep nil :type (member t nil))
(colnum 0 :type column)
(defun fits-on-line-p (stream until force-newlines-p)
(let ((available (pretty-stream-line-length stream)))
- (when (and (not *print-readably*) *print-lines*
- (= *print-lines* (pretty-stream-line-number stream)))
+ (when (and (not *print-readably*)
+ (pretty-stream-print-lines stream)
+ (= (pretty-stream-print-lines stream)
+ (pretty-stream-line-number stream)))
(decf available 3) ; for the `` ..''
(decf available (logical-block-suffix-length
(car (pretty-stream-blocks stream)))))
(let ((line-number (pretty-stream-line-number stream)))
(incf line-number)
(when (and (not *print-readably*)
- *print-lines* (>= line-number *print-lines*))
+ (pretty-stream-print-lines stream)
+ (>= line-number (pretty-stream-print-lines stream)))
(write-string " .." target)
(let ((suffix-length (logical-block-suffix-length
(car (pretty-stream-blocks stream)))))
((t) *terminal-io*)
((nil) *standard-output*)
(t stream))))
- (when (pretty-stream-p stream)
+ (when (print-pretty-on-stream-p stream)
(enqueue-newline stream kind)))
nil)
((t) *terminal-io*)
((nil) *standard-output*)
(t stream))))
- (when (pretty-stream-p stream)
+ (when (print-pretty-on-stream-p stream)
(enqueue-indent stream relative-to n)))
nil)
((t) *terminal-io*)
((nil) *standard-output*)
(t stream))))
- (when (pretty-stream-p stream)
+ (when (print-pretty-on-stream-p stream)
(enqueue-tab stream kind colnum colinc)))
nil)
(defvar *initial-pprint-dispatch*)
(defvar *building-initial-table* nil)
-(defstruct pprint-dispatch-entry
- ;; The type specifier for this entry.
- (type (required-argument) :type t)
- ;; A function to test to see whether an object is of this time. Pretty must
- ;; just (lambda (obj) (typep object type)) except that we handle the
- ;; CONS type specially so that (cons (member foo)) works. We don't
- ;; bother computing this for entries in the CONS hash table, because
- ;; we don't need it.
+(defstruct (pprint-dispatch-entry (:copier nil))
+ ;; the type specifier for this entry
+ (type (missing-arg) :type t)
+ ;; a function to test to see whether an object is of this time.
+ ;; Pretty must just (LAMBDA (OBJ) (TYPEP OBJECT TYPE)) except that
+ ;; we handle the CONS type specially so that (CONS (MEMBER FOO))
+ ;; works. We don't bother computing this for entries in the CONS
+ ;; hash table, because we don't need it.
(test-fn nil :type (or function null))
- ;; The priority for this guy.
+ ;; the priority for this guy
(priority 0 :type real)
;; T iff one of the original entries.
(initial-p *building-initial-table* :type (member t nil))
- ;; And the associated function.
- (function (required-argument) :type function))
+ ;; and the associated function
+ (function (missing-arg) :type function))
(def!method print-object ((entry pprint-dispatch-entry) stream)
(print-unreadable-object (entry stream :type t)
(format stream "type=~S, priority=~S~@[ [initial]~]"
(pprint-dispatch-entry-priority entry)
(pprint-dispatch-entry-initial-p entry))))
-(defstruct pprint-dispatch-table
+(defstruct (pprint-dispatch-table (:copier nil))
;; A list of all the entries (except for CONS entries below) in highest
;; to lowest priority.
(entries nil :type list)
(let ((expr (compute-test-expr type 'object)))
(cond ((cdr (assoc expr *precompiled-pprint-dispatch-funs*
:test #'equal)))
- ((fboundp 'compile)
- (compile nil `(lambda (object) ,expr)))
- (was-cons
- (warn "CONS PPRINT dispatch ignored w/o compiler loaded:~% ~S"
- type)
- #'(lambda (object) (declare (ignore object)) nil))
(t
- (let ((ttype (sb!kernel:specifier-type type)))
- #'(lambda (object) (sb!kernel:%typep object ttype)))))))))
+ (compile nil `(lambda (object) ,expr))))))))
(defun copy-pprint-dispatch (&optional (table *print-pprint-dispatch*))
(declare (type (or pprint-dispatch-table null) table))
(when (funcall (pprint-dispatch-entry-test-fn entry) object)
(return entry)))))
(if entry
- (values (pprint-dispatch-entry-function entry) t)
+ (values (pprint-dispatch-entry-fun entry) t)
(values #'(lambda (stream object)
(output-ugly-object object stream))
nil))))
(stringp array)
(bit-vector-p array))
(output-ugly-object array stream))
- ((and *print-readably* (not (eq (array-element-type array) 't)))
+ ((and *print-readably* (not (eq (array-element-type array) t)))
(let ((*print-readably* nil))
(error 'print-not-readable :object array)))
((vectorp array)
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