(in-package "SB!KERNEL")
\f
+;;;; miscellaneous support utilities
+
+;;; Signalling an error when trying to print an error condition is
+;;; generally a PITA, so whatever the failure encountered when
+;;; wondering about FILE-POSITION within a condition printer, 'tis
+;;; better silently to give up than to try to complain.
+(defun file-position-or-nil-for-error (stream &optional (pos nil posp))
+ ;; Arguably FILE-POSITION shouldn't be signalling errors at all; but
+ ;; "NIL if this cannot be determined" in the ANSI spec doesn't seem
+ ;; absolutely unambiguously to prohibit errors when, e.g., STREAM
+ ;; has been closed so that FILE-POSITION is a nonsense question. So
+ ;; my (WHN) impression is that the conservative approach is to
+ ;; IGNORE-ERRORS. (I encountered this failure from within a homebrew
+ ;; defsystemish operation where the ERROR-STREAM had been CL:CLOSEd,
+ ;; I think by nonlocally exiting through a WITH-OPEN-FILE, by the
+ ;; time an error was reported.)
+ (if posp
+ (ignore-errors (file-position stream pos))
+ (ignore-errors (file-position stream))))
+\f
;;;; the CONDITION class
(/show0 "condition.lisp 20")
"Make an instance of a condition object using the specified initargs."
;; Note: ANSI specifies no exceptional situations in this function.
;; signalling simple-type-error would not be wrong.
- (let* ((thing (if (symbolp thing)
- (find-classoid thing)
+ (let* ((thing (or (and (symbolp thing) (find-classoid thing nil))
thing))
(class (typecase thing
(condition-classoid thing)
(return nil)))
(setf (getf (condition-assigned-slots res) (condition-slot-name hslot))
(find-slot-default class hslot))))
-
res))
\f
;;;; DEFINE-CONDITION
(eval-when (:compile-toplevel :load-toplevel :execute)
(defun %compiler-define-condition (name direct-supers layout
all-readers all-writers)
- (sb!xc:proclaim `(ftype (function (t) t) ,@all-readers))
- (sb!xc:proclaim `(ftype (function (t t) t) ,@all-writers))
- (multiple-value-bind (class old-layout)
- (insured-find-classoid name
- #'condition-classoid-p
- #'make-condition-classoid)
- (setf (layout-classoid layout) class)
- (setf (classoid-direct-superclasses class)
- (mapcar #'find-classoid direct-supers))
- (cond ((not old-layout)
- (register-layout layout))
- ((not *type-system-initialized*)
- (setf (layout-classoid old-layout) class)
- (setq layout old-layout)
- (unless (eq (classoid-layout class) layout)
+ (with-single-package-locked-error
+ (:symbol name "defining ~A as a condition")
+ (sb!xc:proclaim `(ftype (function (t) t) ,@all-readers))
+ (sb!xc:proclaim `(ftype (function (t t) t) ,@all-writers))
+ (multiple-value-bind (class old-layout)
+ (insured-find-classoid name
+ #'condition-classoid-p
+ #'make-condition-classoid)
+ (setf (layout-classoid layout) class)
+ (setf (classoid-direct-superclasses class)
+ (mapcar #'find-classoid direct-supers))
+ (cond ((not old-layout)
+ (register-layout layout))
+ ((not *type-system-initialized*)
+ (setf (layout-classoid old-layout) class)
+ (setq layout old-layout)
+ (unless (eq (classoid-layout class) layout)
+ (register-layout layout)))
+ ((redefine-layout-warning "current"
+ old-layout
+ "new"
+ (layout-length layout)
+ (layout-inherits layout)
+ (layout-depthoid layout)
+ (layout-n-untagged-slots layout))
+ (register-layout layout :invalidate t))
+ ((not (classoid-layout class))
(register-layout layout)))
- ((redefine-layout-warning "current"
- old-layout
- "new"
- (layout-length layout)
- (layout-inherits layout)
- (layout-depthoid layout))
- (register-layout layout :invalidate t))
- ((not (classoid-layout class))
- (register-layout layout)))
-
- (setf (layout-info layout)
- (locally
- ;; KLUDGE: There's a FIND-CLASS DEFTRANSFORM for constant class
- ;; names which creates fast but non-cold-loadable, non-compact
- ;; code. In this context, we'd rather have compact, cold-loadable
- ;; code. -- WHN 19990928
- (declare (notinline find-classoid))
- (layout-info (classoid-layout (find-classoid 'condition)))))
-
- (setf (find-classoid name) class)
-
- ;; Initialize CPL slot.
- (setf (condition-classoid-cpl class)
- (remove-if-not #'condition-classoid-p
- (std-compute-class-precedence-list class))))
+
+ (setf (layout-info layout)
+ (locally
+ ;; KLUDGE: There's a FIND-CLASS DEFTRANSFORM for constant class
+ ;; names which creates fast but non-cold-loadable, non-compact
+ ;; code. In this context, we'd rather have compact, cold-loadable
+ ;; code. -- WHN 19990928
+ (declare (notinline find-classoid))
+ (layout-info (classoid-layout (find-classoid 'condition)))))
+
+ (setf (find-classoid name) class)
+
+ ;; Initialize CPL slot.
+ (setf (condition-classoid-cpl class)
+ (remove-if-not #'condition-classoid-p
+ (std-compute-class-precedence-list class)))))
(values))
) ; EVAL-WHEN
(defun %define-condition (name parent-types layout slots documentation
report default-initargs all-readers all-writers)
- (%compiler-define-condition name parent-types layout all-readers all-writers)
- (let ((class (find-classoid name)))
- (setf (condition-classoid-slots class) slots)
- (setf (condition-classoid-report class) report)
- (setf (condition-classoid-default-initargs class) default-initargs)
- (setf (fdocumentation name 'type) documentation)
-
- (dolist (slot slots)
-
- ;; Set up reader and writer functions.
- (let ((slot-name (condition-slot-name slot)))
- (dolist (reader (condition-slot-readers slot))
- (install-condition-slot-reader reader name slot-name))
- (dolist (writer (condition-slot-writers slot))
- (install-condition-slot-writer writer name slot-name))))
-
- ;; Compute effective slots and set up the class and hairy slots
- ;; (subsets of the effective slots.)
- (let ((eslots (compute-effective-slots class))
- (e-def-initargs
- (reduce #'append
- (mapcar #'condition-classoid-default-initargs
+ (with-single-package-locked-error
+ (:symbol name "defining ~A as a condition")
+ (%compiler-define-condition name parent-types layout all-readers all-writers)
+ (let ((class (find-classoid name)))
+ (setf (condition-classoid-slots class) slots)
+ (setf (condition-classoid-report class) report)
+ (setf (condition-classoid-default-initargs class) default-initargs)
+ (setf (fdocumentation name 'type) documentation)
+
+ (dolist (slot slots)
+
+ ;; Set up reader and writer functions.
+ (let ((slot-name (condition-slot-name slot)))
+ (dolist (reader (condition-slot-readers slot))
+ (install-condition-slot-reader reader name slot-name))
+ (dolist (writer (condition-slot-writers slot))
+ (install-condition-slot-writer writer name slot-name))))
+
+ ;; Compute effective slots and set up the class and hairy slots
+ ;; (subsets of the effective slots.)
+ (let ((eslots (compute-effective-slots class))
+ (e-def-initargs
+ (reduce #'append
+ (mapcar #'condition-classoid-default-initargs
(condition-classoid-cpl class)))))
- (dolist (slot eslots)
- (ecase (condition-slot-allocation slot)
- (:class
- (unless (condition-slot-cell slot)
- (setf (condition-slot-cell slot)
- (list (if (condition-slot-initform-p slot)
- (let ((initform (condition-slot-initform slot)))
- (if (functionp initform)
- (funcall initform)
- initform))
- *empty-condition-slot*))))
- (push slot (condition-classoid-class-slots class)))
- ((:instance nil)
- (setf (condition-slot-allocation slot) :instance)
- (when (or (functionp (condition-slot-initform slot))
- (dolist (initarg (condition-slot-initargs slot) nil)
- (when (functionp (getf e-def-initargs initarg))
- (return t))))
- (push slot (condition-classoid-hairy-slots class))))))))
- name)
+ (dolist (slot eslots)
+ (ecase (condition-slot-allocation slot)
+ (:class
+ (unless (condition-slot-cell slot)
+ (setf (condition-slot-cell slot)
+ (list (if (condition-slot-initform-p slot)
+ (let ((initform (condition-slot-initform slot)))
+ (if (functionp initform)
+ (funcall initform)
+ initform))
+ *empty-condition-slot*))))
+ (push slot (condition-classoid-class-slots class)))
+ ((:instance nil)
+ (setf (condition-slot-allocation slot) :instance)
+ (when (or (functionp (condition-slot-initform slot))
+ (dolist (initarg (condition-slot-initargs slot) nil)
+ (when (functionp (getf e-def-initargs initarg))
+ (return t))))
+ (push slot (condition-classoid-hairy-slots class))))))))
+ name))
(defmacro define-condition (name (&rest parent-types) (&rest slot-specs)
&body options)
(define-condition simple-error (simple-condition error) ())
+;;; not specified by ANSI, but too useful not to have around.
+(define-condition simple-style-warning (simple-condition style-warning) ())
+
(define-condition storage-condition (serious-condition) ())
(define-condition type-error (error)
(:report
(lambda (condition stream)
(let* ((error-stream (stream-error-stream condition))
- (pos (file-position error-stream)))
+ (pos (file-position-or-nil-for-error error-stream)))
(let (lineno colno)
(when (and pos
(< pos sb!xc:array-dimension-limit)
(file-position error-stream :start))
(let ((string
(make-string pos
- :element-type (stream-element-type error-stream))))
+ :element-type (stream-element-type
+ error-stream))))
(when (= pos (read-sequence string error-stream))
(setq lineno (1+ (count #\Newline string))
colno (- pos
(or (position #\Newline string :from-end t) -1)
1))))
- (file-position error-stream pos))
+ (file-position-or-nil-for-error error-stream pos))
(format stream
"READER-ERROR ~@[at ~W ~]~
~@[(line ~W~]~@[, column ~W) ~]~
(reader-error-format-control condition)
(reader-error-format-arguments condition)))))))
\f
-;;;; various other (not specified by ANSI) CONDITIONs
-;;;;
-;;;; These might logically belong in other files; they're here, after
-;;;; setup of CONDITION machinery, only because that makes it easier to
-;;;; get cold init to work.
-
-(define-condition simple-style-warning (simple-condition style-warning) ())
-
-(define-condition values-type-error (type-error)
- ()
- (:report
- (lambda (condition stream)
- (format stream
- "~@<The values set ~2I~:_[~{~S~^ ~}] ~I~_is not of type ~2I~_~S.~:>"
- (type-error-datum condition)
- (type-error-expected-type condition)))))
-
-;;; KLUDGE: a condition for floating point errors when we can't or
-;;; won't figure out what type they are. (In FreeBSD and OpenBSD we
-;;; don't know how, at least as of sbcl-0.6.7; in Linux we probably
-;;; know how but the old code was broken by the conversion to POSIX
-;;; signal handling and hasn't been fixed as of sbcl-0.6.7.)
-;;;
-;;; FIXME: Perhaps this should also be a base class for all
-;;; floating point exceptions?
-(define-condition floating-point-exception (arithmetic-error)
- ((flags :initarg :traps
- :initform nil
- :reader floating-point-exception-traps))
- (:report (lambda (condition stream)
- (format stream
- "An arithmetic error ~S was signalled.~%"
- (type-of condition))
- (let ((traps (floating-point-exception-traps condition)))
- (if traps
- (format stream
- "Trapping conditions are: ~%~{ ~S~^~}~%"
- traps)
- (write-line
- "No traps are enabled? How can this be?"
- stream))))))
-
-(define-condition index-too-large-error (type-error)
- ()
- (:report
- (lambda (condition stream)
- (format stream
- "The index ~S is too large."
- (type-error-datum condition)))))
-
-(define-condition bounding-indices-bad-error (type-error)
- ((object :reader bounding-indices-bad-object :initarg :object))
- (:report
- (lambda (condition stream)
- (let* ((datum (type-error-datum condition))
- (start (car datum))
- (end (cdr datum))
- (object (bounding-indices-bad-object condition)))
- (etypecase object
- (sequence
- (format stream
- "The bounding indices ~S and ~S are bad for a sequence of length ~S."
- start end (length object)))
- (array
- ;; from WITH-ARRAY-DATA
- (format stream
- "The START and END parameters ~S and ~S are bad for an array of total size ~S."
- start end (array-total-size object))))))))
-
-(define-condition nil-array-accessed-error (type-error)
- ()
- (:report (lambda (condition stream)
- (declare (ignore condition))
- (format stream
- "An attempt to access an array of element-type ~
- NIL was made. Congratulations!"))))
-
-(define-condition io-timeout (stream-error)
- ((direction :reader io-timeout-direction :initarg :direction))
- (:report
- (lambda (condition stream)
- (declare (type stream stream))
- (format stream
- "I/O timeout ~(~A~)ing ~S"
- (io-timeout-direction condition)
- (stream-error-stream condition)))))
-
-(define-condition namestring-parse-error (parse-error)
- ((complaint :reader namestring-parse-error-complaint :initarg :complaint)
- (args :reader namestring-parse-error-args :initarg :args :initform nil)
- (namestring :reader namestring-parse-error-namestring :initarg :namestring)
- (offset :reader namestring-parse-error-offset :initarg :offset))
- (:report
- (lambda (condition stream)
- (format stream
- "parse error in namestring: ~?~% ~A~% ~V@T^"
- (namestring-parse-error-complaint condition)
- (namestring-parse-error-args condition)
- (namestring-parse-error-namestring condition)
- (namestring-parse-error-offset condition)))))
-
-(define-condition simple-package-error (simple-condition package-error) ())
-
-(define-condition reader-package-error (reader-error) ())
-
-(define-condition reader-eof-error (end-of-file)
- ((context :reader reader-eof-error-context :initarg :context))
- (:report
- (lambda (condition stream)
- (format stream
- "unexpected end of file on ~S ~A"
- (stream-error-stream condition)
- (reader-eof-error-context condition)))))
-
-(define-condition reader-impossible-number-error (reader-error)
- ((error :reader reader-impossible-number-error-error :initarg :error))
- (:report
- (lambda (condition stream)
- (let ((error-stream (stream-error-stream condition)))
- (format stream "READER-ERROR ~@[at ~W ~]on ~S:~%~?~%Original error: ~A"
- (file-position error-stream) error-stream
- (reader-error-format-control condition)
- (reader-error-format-arguments condition)
- (reader-impossible-number-error-error condition))))))
-
-(define-condition timeout (serious-condition) ())
-\f
;;;; special SBCL extension conditions
;;; an error apparently caused by a bug in SBCL itself
mailing lists, which you can find at ~
<http://sbcl.sourceforge.net/>.~:@>"
'((fmakunbound 'compile))))))
-(defun bug (format-control &rest format-arguments)
- (error 'bug
- :format-control format-control
- :format-arguments format-arguments))
+
+(define-condition simple-storage-condition (storage-condition simple-condition) ())
;;; a condition for use in stubs for operations which aren't supported
;;; on some platforms
;;; regression tests cheerfully passed because they assumed that
;;; unFBOUNDPness meant they were running on an system which didn't
;;; support the extension.)
-(define-condition unsupported-operator (cell-error) ()
- (:report
- (lambda (condition stream)
- (format stream
- "unsupported on this platform (OS, CPU, whatever): ~S"
- (cell-error-name condition)))))
+(define-condition unsupported-operator (simple-error) ())
+
\f
;;; (:ansi-cl :function remove)
;;; (:ansi-cl :section (a b c))
;;; (:ansi-cl :glossary "similar")
;;;
;;; (:sbcl :node "...")
+;;; (:sbcl :variable *ed-functions*)
;;;
;;; FIXME: this is not the right place for this.
(defun print-reference (reference stream)
(ecase (car reference)
+ (:amop
+ (format stream "AMOP")
+ (format stream ", ")
+ (destructuring-bind (type data) (cdr reference)
+ (ecase type
+ (:generic-function (format stream "Generic Function ~S" data))
+ (:section (format stream "Section ~{~D~^.~}" data)))))
(:ansi-cl
(format stream "The ANSI Standard")
(format stream ", ")
(:special-operator (format stream "Special Operator ~S" data))
(:macro (format stream "Macro ~S" data))
(:section (format stream "Section ~{~D~^.~}" data))
- (:glossary (format stream "Glossary Entry ~S" data)))))
+ (:glossary (format stream "Glossary entry for ~S" data))
+ (:issue (format stream "writeup for Issue ~A" data)))))
(:sbcl
(format stream "The SBCL Manual")
(format stream ", ")
(destructuring-bind (type data) (cdr reference)
(ecase type
- (:node (format stream "Node ~S" data)))))
- ;; FIXME: other documents (e.g. AMOP, Franz documentation :-)
+ (:node (format stream "Node ~S" data))
+ (:variable (format stream "Variable ~S" data))
+ (:function (format stream "Function ~S" data)))))
+ ;; FIXME: other documents (e.g. CLIM, Franz documentation :-)
))
(define-condition reference-condition ()
((references :initarg :references :reader reference-condition-references)))
(def!method print-object :around ((o reference-condition) s)
(call-next-method)
(unless (or *print-escape* *print-readably*)
- (when *print-condition-references*
+ (when (and *print-condition-references*
+ (reference-condition-references o))
(format s "~&See also:~%")
(pprint-logical-block (s nil :per-line-prefix " ")
(do* ((rs (reference-condition-references o) (cdr rs))
(print-reference r s)
(unless (null (cdr rs))
(terpri s)))))))
-
+
(define-condition duplicate-definition (reference-condition warning)
((name :initarg :name :reader duplicate-definition-name))
(:report (lambda (c s)
(reference-condition simple-warning)
()
(:default-initargs
- :references (list '(:ansi-cl :function make-array)
- '(:ansi-cl :function upgraded-array-element-type))))
+ :references (list
+ '(:ansi-cl :function make-array)
+ '(:ansi-cl :function sb!xc:upgraded-array-element-type))))
+
+(define-condition displaced-to-array-too-small-error
+ (reference-condition simple-error)
+ ()
+ (:default-initargs
+ :references (list '(:ansi-cl :function adjust-array))))
(define-condition type-warning (reference-condition simple-warning)
()
(define-condition format-too-many-args-warning
(format-args-mismatch simple-style-warning)
())
+
+(define-condition extension-failure (reference-condition simple-error)
+ ())
+
+(define-condition structure-initarg-not-keyword
+ (reference-condition simple-style-warning)
+ ()
+ (:default-initargs :references (list '(:ansi-cl :section (2 4 8 13)))))
+
+#!+sb-package-locks
+(progn
+
+(define-condition package-lock-violation (reference-condition package-error)
+ ((format-control :initform nil :initarg :format-control
+ :reader package-error-format-control)
+ (format-arguments :initform nil :initarg :format-arguments
+ :reader package-error-format-arguments))
+ (:report
+ (lambda (condition stream)
+ (let ((control (package-error-format-control condition)))
+ (if control
+ (apply #'format stream
+ (format nil "~~@<Lock on package ~A violated when ~A.~~:@>"
+ (package-name (package-error-package condition))
+ control)
+ (package-error-format-arguments condition))
+ (format stream "~@<Lock on package ~A violated.~:@>"
+ (package-name (package-error-package condition)))))))
+ ;; no :default-initargs -- reference-stuff provided by the
+ ;; signalling form in target-package.lisp
+ #!+sb-doc
+ (:documentation
+ "Subtype of CL:PACKAGE-ERROR. A subtype of this error is signalled
+when a package-lock is violated."))
+
+(define-condition package-locked-error (package-lock-violation) ()
+ #!+sb-doc
+ (:documentation
+ "Subtype of SB-EXT:PACKAGE-LOCK-VIOLATION. An error of this type is
+signalled when an operation on a package violates a package lock."))
+
+(define-condition symbol-package-locked-error (package-lock-violation)
+ ((symbol :initarg :symbol :reader package-locked-error-symbol))
+ #!+sb-doc
+ (:documentation
+ "Subtype of SB-EXT:PACKAGE-LOCK-VIOLATION. An error of this type is
+signalled when an operation on a symbol violates a package lock. The
+symbol that caused the violation is accessed by the function
+SB-EXT:PACKAGE-LOCKED-ERROR-SYMBOL."))
+
+) ; progn
+
+(define-condition undefined-alien-error (error) ())
+
+(define-condition undefined-alien-variable-error (undefined-alien-error) ()
+ (:report
+ (lambda (condition stream)
+ (declare (ignore condition))
+ (format stream "Attempt to access an undefined alien variable."))))
+
+(define-condition undefined-alien-function-error (undefined-alien-error) ()
+ (:report
+ (lambda (condition stream)
+ (declare (ignore condition))
+ (format stream "Attempt to call an undefined alien function."))))
+
+\f
+;;;; various other (not specified by ANSI) CONDITIONs
+;;;;
+;;;; These might logically belong in other files; they're here, after
+;;;; setup of CONDITION machinery, only because that makes it easier to
+;;;; get cold init to work.
+
+;;; OAOOM warning: see cross-condition.lisp
+(define-condition encapsulated-condition (condition)
+ ((condition :initarg :condition :reader encapsulated-condition)))
+
+(define-condition values-type-error (type-error)
+ ()
+ (:report
+ (lambda (condition stream)
+ (format stream
+ "~@<The values set ~2I~:_[~{~S~^ ~}] ~I~_is not of type ~2I~_~S.~:>"
+ (type-error-datum condition)
+ (type-error-expected-type condition)))))
+
+;;; KLUDGE: a condition for floating point errors when we can't or
+;;; won't figure out what type they are. (In FreeBSD and OpenBSD we
+;;; don't know how, at least as of sbcl-0.6.7; in Linux we probably
+;;; know how but the old code was broken by the conversion to POSIX
+;;; signal handling and hasn't been fixed as of sbcl-0.6.7.)
+;;;
+;;; FIXME: Perhaps this should also be a base class for all
+;;; floating point exceptions?
+(define-condition floating-point-exception (arithmetic-error)
+ ((flags :initarg :traps
+ :initform nil
+ :reader floating-point-exception-traps))
+ (:report (lambda (condition stream)
+ (format stream
+ "An arithmetic error ~S was signalled.~%"
+ (type-of condition))
+ (let ((traps (floating-point-exception-traps condition)))
+ (if traps
+ (format stream
+ "Trapping conditions are: ~%~{ ~S~^~}~%"
+ traps)
+ (write-line
+ "No traps are enabled? How can this be?"
+ stream))))))
+
+(define-condition index-too-large-error (type-error)
+ ()
+ (:report
+ (lambda (condition stream)
+ (format stream
+ "The index ~S is too large."
+ (type-error-datum condition)))))
+
+(define-condition bounding-indices-bad-error (reference-condition type-error)
+ ((object :reader bounding-indices-bad-object :initarg :object))
+ (:report
+ (lambda (condition stream)
+ (let* ((datum (type-error-datum condition))
+ (start (car datum))
+ (end (cdr datum))
+ (object (bounding-indices-bad-object condition)))
+ (etypecase object
+ (sequence
+ (format stream
+ "The bounding indices ~S and ~S are bad ~
+ for a sequence of length ~S."
+ start end (length object)))
+ (array
+ ;; from WITH-ARRAY-DATA
+ (format stream
+ "The START and END parameters ~S and ~S are ~
+ bad for an array of total size ~S."
+ start end (array-total-size object)))))))
+ (:default-initargs
+ :references
+ (list '(:ansi-cl :glossary "bounding index designator")
+ '(:ansi-cl :issue "SUBSEQ-OUT-OF-BOUNDS:IS-AN-ERROR"))))
+
+(define-condition nil-array-accessed-error (reference-condition type-error)
+ ()
+ (:report (lambda (condition stream)
+ (declare (ignore condition))
+ (format stream
+ "An attempt to access an array of element-type ~
+ NIL was made. Congratulations!")))
+ (:default-initargs
+ :references (list '(:ansi-cl :function sb!xc:upgraded-array-element-type)
+ '(:ansi-cl :section (15 1 2 1))
+ '(:ansi-cl :section (15 1 2 2)))))
+
+(define-condition io-timeout (stream-error)
+ ((direction :reader io-timeout-direction :initarg :direction))
+ (:report
+ (lambda (condition stream)
+ (declare (type stream stream))
+ (format stream
+ "I/O timeout ~(~A~)ing ~S"
+ (io-timeout-direction condition)
+ (stream-error-stream condition)))))
+
+(define-condition namestring-parse-error (parse-error)
+ ((complaint :reader namestring-parse-error-complaint :initarg :complaint)
+ (args :reader namestring-parse-error-args :initarg :args :initform nil)
+ (namestring :reader namestring-parse-error-namestring :initarg :namestring)
+ (offset :reader namestring-parse-error-offset :initarg :offset))
+ (:report
+ (lambda (condition stream)
+ (format stream
+ "parse error in namestring: ~?~% ~A~% ~V@T^"
+ (namestring-parse-error-complaint condition)
+ (namestring-parse-error-args condition)
+ (namestring-parse-error-namestring condition)
+ (namestring-parse-error-offset condition)))))
+
+(define-condition simple-package-error (simple-condition package-error) ())
+
+(define-condition reader-package-error (reader-error) ())
+
+(define-condition reader-eof-error (end-of-file)
+ ((context :reader reader-eof-error-context :initarg :context))
+ (:report
+ (lambda (condition stream)
+ (format stream
+ "unexpected end of file on ~S ~A"
+ (stream-error-stream condition)
+ (reader-eof-error-context condition)))))
+
+(define-condition reader-impossible-number-error (reader-error)
+ ((error :reader reader-impossible-number-error-error :initarg :error))
+ (:report
+ (lambda (condition stream)
+ (let ((error-stream (stream-error-stream condition)))
+ (format stream "READER-ERROR ~@[at ~W ~]on ~S:~%~?~%Original error: ~A"
+ (file-position-or-nil-for-error error-stream) error-stream
+ (reader-error-format-control condition)
+ (reader-error-format-arguments condition)
+ (reader-impossible-number-error-error condition))))))
+
+(define-condition timeout (serious-condition) ())
+
+(define-condition declaration-type-conflict-error (reference-condition
+ simple-error)
+ ()
+ (:default-initargs
+ :format-control "symbol ~S cannot be both the name of a type and the name of a declaration"
+ :references (list '(:ansi-cl :section (3 8 21)))))
+
+;;; Single stepping conditions
+
+(define-condition step-condition ()
+ ((form :initarg :form :reader step-condition-form))
+ #!+sb-doc
+ (:documentation "Common base class of single-stepping conditions.
+STEP-CONDITION-FORM holds a string representation of the form being
+stepped."))
+
+#!+sb-doc
+(setf (fdocumentation 'step-condition-form 'function)
+ "Form associated with the STEP-CONDITION.")
+
+(define-condition step-form-condition (step-condition)
+ ((source-path :initarg :source-path :reader step-condition-source-path)
+ (pathname :initarg :pathname :reader step-condition-pathname))
+ #!+sb-doc
+ (:documentation "Condition signalled by code compiled with
+single-stepping information when about to execute a form.
+STEP-CONDITION-FORM holds the form, STEP-CONDITION-PATHNAME holds the
+pathname of the original file or NIL, and STEP-CONDITION-SOURCE-PATH
+holds the source-path to the original form within that file or NIL.
+Associated with this condition are always the restarts STEP-INTO,
+STEP-NEXT, and STEP-CONTINUE."))
+
+#!+sb-doc
+(setf (fdocumentation 'step-condition-source-path 'function)
+ "Source-path of the original form associated with the
+STEP-FORM-CONDITION or NIL."
+ (fdocumentation 'step-condition-pathname 'function)
+ "Pathname of the original source-file associated with the
+STEP-FORM-CONDITION or NIL.")
+
+(define-condition step-result-condition (step-condition)
+ ((result :initarg :result :reader step-condition-result)))
+
+#!+sb-doc
+(setf (fdocumentation 'step-condition-result 'function)
+ "Return values associated with STEP-VALUES-CONDITION as a list,
+or the variable value associated with STEP-VARIABLE-CONDITION.")
+
+(define-condition step-values-condition (step-result-condition)
+ ()
+ #!+sb-doc
+ (:documentation "Condition signalled by code compiled with
+single-stepping information after executing a form.
+STEP-CONDITION-FORM holds the form, and STEP-CONDITION-RESULT holds
+the values returned by the form as a list. No associated restarts."))
+
+(define-condition step-variable-condition (step-result-condition)
+ ()
+ #!+sb-doc
+ (:documentation "Condition signalled by code compiled with
+single-stepping information when referencing a variable.
+STEP-CONDITION-FORM hold the symbol, and STEP-CONDITION-RESULT holds
+the value of the variable. No associated restarts."))
+
\f
;;;; restart definitions
"Transfer control and VALUE to a restart named USE-VALUE, or return NIL if
none exists."))
+;;; single-stepping restarts
+
+(macrolet ((def (name doc)
+ #!-sb-doc (declare (ignore doc))
+ `(defun ,name (condition)
+ #!+sb-doc ,doc
+ (invoke-restart (find-restart-or-control-error ',name condition)))))
+ (def step-continue
+ "Transfers control to the STEP-CONTINUE restart associated with
+the condition, continuing execution without stepping. Signals a
+CONTROL-ERROR if the restart does not exist.")
+ (def step-next
+ "Transfers control to the STEP-NEXT restart associated with the
+condition, executing the current form without stepping and continuing
+stepping with the next form. Signals CONTROL-ERROR is the restart does
+not exists.")
+ (def step-into
+ "Transfers control to the STEP-INTO restart associated with the
+condition, stepping into the current form. Signals a CONTROL-ERROR is
+the restart does not exist."))
+
(/show0 "condition.lisp end of file")
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