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Carl Shapiro
cmucl
Commits
de339e64
Commit
de339e64
authored
31 years ago
by
ram
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Moved ERROR &c (that wants to be native compiled) into lispinit.
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f3ed8401
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code/error.lisp
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-139
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code/error.lisp
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code/error.lisp
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139
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de339e64
...
@@ -7,7 +7,7 @@
...
@@ -7,7 +7,7 @@
;;; Scott Fahlman or slisp-group@cs.cmu.edu.
;;; Scott Fahlman or slisp-group@cs.cmu.edu.
;;;
;;;
(
ext:file-comment
(
ext:file-comment
"$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/code/error.lisp,v 1.3
1
1993/08/19 1
2:45:37
ram Exp $"
)
"$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/code/error.lisp,v 1.3
2
1993/08/19 1
7:14:40
ram Exp $"
)
;;;
;;;
;;; **********************************************************************
;;; **********************************************************************
;;;
;;;
...
@@ -507,154 +507,17 @@
...
@@ -507,154 +507,17 @@
*handler-clusters*
)))
*handler-clusters*
)))
,@
forms
))
,@
forms
))
(
defvar
*break-on-signals*
nil
"When (typep condition *break-on-signals*) is true, then calls to SIGNAL will
enter the debugger prior to signalling that condition."
)
(
declaim
(
optimize
(
speed
2
)))
; Turn off byte compiler.
(
defun
signal
(
datum
&rest
arguments
)
"Invokes the signal facility on a condition formed from datum and arguments.
If the condition is not handled, nil is returned. If
(TYPEP condition *BREAK-ON-SIGNALS*) is true, the debugger is invoked before
any signalling is done."
(
let
((
condition
(
coerce-to-condition
datum
arguments
'simple-condition
'signal
))
(
*handler-clusters*
*handler-clusters*
))
(
when
(
typep
condition
*break-on-signals*
)
(
let
((
*break-on-signals*
nil
))
(
break
"~A~%Break entered because of *break-on-signals* (now NIL.)"
condition
)))
(
loop
(
unless
*handler-clusters*
(
return
))
(
let
((
cluster
(
pop
*handler-clusters*
)))
(
dolist
(
handler
cluster
)
(
when
(
typep
condition
(
car
handler
))
(
funcall
(
cdr
handler
)
condition
)))))
nil
))
;;; COERCE-TO-CONDITION is used in SIGNAL, ERROR, CERROR, WARN, and
;;; INVOKE-DEBUGGER for parsing the hairy argument conventions into a single
;;; argument that's directly usable by all the other routines.
;;;
(
defun
coerce-to-condition
(
datum
arguments
default-type
function-name
)
(
cond
((
typep
datum
'condition
)
(
if
arguments
(
cerror
"Ignore the additional arguments."
'simple-type-error
:datum
arguments
:expected-type
'null
:format-control
"You may not supply additional arguments ~
when giving ~S to ~S."
:format-arguments
(
list
datum
function-name
)))
datum
)
((
symbolp
datum
)
;Roughly, (subtypep datum 'condition).
(
apply
#'
make-condition
datum
arguments
))
((
or
(
stringp
datum
)
(
functionp
datum
))
(
make-condition
default-type
:format-control
datum
:format-arguments
arguments
))
(
t
(
error
'simple-type-error
:datum
datum
:expected-type
'
(
or
symbol
string
)
:format-control
"Bad argument to ~S: ~S"
:format-arguments
(
list
function-name
datum
)))))
;;;;
ERROR, CERROR, BREAK, WARN
.
;;;;
Condition definitions
.
(
define-condition
serious-condition
(
condition
)
())
(
define-condition
serious-condition
(
condition
)
())
(
define-condition
error
(
serious-condition
)
(
define-condition
error
(
serious-condition
)
((
function-name
nil
)))
((
function-name
nil
)))
(
defun
error
(
datum
&rest
arguments
)
"Invokes the signal facility on a condition formed from datum and arguments.
If the condition is not handled, the debugger is invoked."
(
kernel:infinite-error-protect
(
let
((
condition
(
coerce-to-condition
datum
arguments
'simple-error
'error
))
(
debug:*stack-top-hint*
debug:*stack-top-hint*
))
(
unless
(
and
(
error-function-name
condition
)
debug:*stack-top-hint*
)
(
multiple-value-bind
(
name
frame
)
(
kernel:find-caller-name
)
(
unless
(
error-function-name
condition
)
(
setf
(
error-function-name
condition
)
name
))
(
unless
debug:*stack-top-hint*
(
setf
debug:*stack-top-hint*
frame
))))
(
let
((
debug:*stack-top-hint*
nil
))
(
signal
condition
))
(
invoke-debugger
condition
))))
;;; CERROR must take care to not use arguments when datum is already a
;;; condition object.
;;;
(
defun
cerror
(
continue-string
datum
&rest
arguments
)
(
kernel:infinite-error-protect
(
with-simple-restart
(
continue
"~A"
(
apply
#'
format
nil
continue-string
arguments
))
(
let
((
condition
(
if
(
typep
datum
'condition
)
datum
(
coerce-to-condition
datum
arguments
'simple-error
'error
)))
(
debug:*stack-top-hint*
debug:*stack-top-hint*
))
(
unless
(
and
(
error-function-name
condition
)
debug:*stack-top-hint*
)
(
multiple-value-bind
(
name
frame
)
(
kernel:find-caller-name
)
(
unless
(
error-function-name
condition
)
(
setf
(
error-function-name
condition
)
name
))
(
unless
debug:*stack-top-hint*
(
setf
debug:*stack-top-hint*
frame
))))
(
with-condition-restarts
condition
(
list
(
find-restart
'continue
))
(
let
((
debug:*stack-top-hint*
nil
))
(
signal
condition
))
(
invoke-debugger
condition
)))))
nil
)
(
defun
break
(
&optional
(
datum
"Break"
)
&rest
arguments
)
"Prints a message and invokes the debugger without allowing any possibility
of condition handling occurring."
(
kernel:infinite-error-protect
(
with-simple-restart
(
continue
"Return from BREAK."
)
(
let
((
debug:*stack-top-hint*
(
or
debug:*stack-top-hint*
(
nth-value
1
(
kernel:find-caller-name
)))))
(
invoke-debugger
(
coerce-to-condition
datum
arguments
'simple-condition
'break
)))))
nil
)
(
define-condition
warning
(
condition
)
())
(
define-condition
warning
(
condition
)
())
(
define-condition
style-warning
(
warning
)
())
(
define-condition
style-warning
(
warning
)
())
(
defun
warn
(
datum
&rest
arguments
)
"Warns about a situation by signalling a condition formed by datum and
arguments. While the condition is being signaled, a muffle-warning restart
exists that causes WARN to immediately return nil."
(
kernel:infinite-error-protect
(
let
((
condition
(
coerce-to-condition
datum
arguments
'simple-warning
'warn
)))
(
check-type
condition
warning
"a warning condition"
)
(
restart-case
(
signal
condition
)
(
muffle-warning
()
:report
"Skip warning."
(
return-from
warn
nil
)))
(
format
*error-output*
"~&~@<Warning: ~3i~:_~A~:>~%"
condition
)))
nil
)
(
declaim
(
optimize
(
speed
0
)))
; Turn byte compiler back on.
;;;; Condition definitions.
;;; Serious-condition and error are defined on the previous page, so ERROR and
;;; CERROR can SETF a slot in the error condition object.
;;;
(
defun
simple-condition-printer
(
condition
stream
)
(
defun
simple-condition-printer
(
condition
stream
)
(
apply
#'
format
stream
(
simple-condition-format-control
condition
)
(
apply
#'
format
stream
(
simple-condition-format-control
condition
)
(
simple-condition-format-arguments
condition
)))
(
simple-condition-format-arguments
condition
)))
...
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