Condition/Exception Taxonomies
This page lists the condition/exception system taxonomies for several Scheme implementations and SRFIs and for R6RS.
Bigloo
&exception
&error
&http-error
&http-redirection-error
&http-status-error
&io-error
&io-file-not-found-error
&io-malformed-url-error
&io-parse-error
&io-port-error
&io-closed-error
&io-read-error
&io-write-error
&io-unknown-host-error
&process-exception
&type-error
&http-redirection
&warning
&eval-warning
Chez Scheme
&condition
&irritants
&message
&serious
&violation
&assertion
&implementation-restriction
&no-infinities
&no-nans
&lexical
&non-continuable
&syntax
&undefined
&error
&i/o
&i/o-port
&i/o-decoding
&i/o-encoding
&i/o-read
&i/o-write
&i/o-invalid-position
&i/o-filename
&i/o-file-already-exists
&i/o-file-does-not-exist
&i/o-file-protection
&i/o-file-is-read-only
&warning
&who
Gambit
Gambit doesn't have a hierarchy, but it does have a set of standard
exceptions.
heap-overflow-exception
stack-overflow-exception
no-such-file-or-directory-exception
os-exception
unbound-os-environment-variable-exception
abandoned-mutex-exception
deadlock-exception
join-timeout-exception
scheduler-exception
started-thread-exception
terminated-thread-exception
uncaught-exception
cfun-conversion-exception
multiple-c-return-exception
sfun-conversion-exception
datum-parsing-exception
expression-parsing-exception
unbound-global-exception
divide-by-zero-exception
improper-length-list-exception
range-exception
type-exception
keyword-expected-exception
nonprocedure-operator-exception
number-of-arguments-limit-exception
unknown-keyword-argument-exception
wrong-number-of-arguments-exception
error-exception
Gauche
<condition>
<compound-condition>
<message-condition>
<error>
<io-error>
<port-error>
<io-closed-error>
<io-read-error>
<io-unit-error>
<io-write-error>
<read-error>
<system-error>
<unhandled-signal-error>
<serious-condition>
<serious-compound-condition>
GNU/MIT Scheme
serious-condition
error
simple-error
illegal-datum
wrong-type-datum
wrong-type-argument
wrong-number-of-arguments
datum-out-of-range
bad-range-argument
inapplicable-object
file-error
file-operation-error
derived-file-error
port-error
derived-port-error
variable-error
unbound-variable
unassigned-variable
arithmetic-error
divide-by-zero
floating-point-overflow
floating-point-underflow
control-error
no-such-restart
not-loading
primitive-procedure-error
system-call-error
warning
simple-warning
simple-condition
breakpoint
Guile
Guile implements SRFI 18, SRFI 34, and R6RS exceptions.
Ikarus
Ikarus implements R6RS exceptions.
Kawa
Kawa gets its taxonomy of exceptions from Java.
Larceny
Larceny implements R6RS exceptions.
Racket
exn
exn:break
exn:fail
exn:fail:contract
exn:fail:contract:arity
exn:fail:contract:divide-by-zero
exn:fail:contract:non-fixnum-result
exn:fail:contract:continuation
exn:fail:contract:variable
exn:fail:filesystem
exn:fail:filesystem:exists
exn:fail:filesystem:version
exn:fail:network
exn:fail:out-of-memory
exn:fail:read
exn:fail:read:eof
exn:fail:read:non-char
exn:fail:syntax
exn:fail:unsupported
exn:fail:user
R6RS
&condition
&irritants
&message
&serious
&error
&violation
&assertion
&non-continuable
&implementation-restriction
&lexical
&syntax
&undefined
&warning
&who
Scheme48
Scheme48 implements SRFI 34, SRFI 35, and SRFI 36.
SCM
SCM doesn't have an exception system, although it does have a way of handling the following exceptions reported by C code:
alarm-interrupt
arithmetic-error
end-of-program
out-of-storage
profile-alarm-interrupt
thrashing
user-interrupt
virtual-alarm-interrupt
Scsh
Scsh has no condition system. It does include an exception system for handling errors reported by Unix system calls.
SISC
SISC gets its taxonomy of exceptions from Java. It also implements SRFI 18, SRFI 34, and SRFI 35.
SRFI 12: Exception Handling
Any object can be used to represent a condition in this system. There is no standard taxonomy of conditions, but there are two types of condition for which special support is included:
composite condition
property condition
SRFI 18: Multithreading support
abandoned-mutex-exception
join-timeout-exception
terminated-thread-exception
uncaught-exception
SRFI 34: Exception Handling for Programs
No condition taxonomy is defined. However, it does refer to SRFI 35 and SRFI 36.
SRFI 35: Conditions
&condition
&message
&serious
&error
SRFI 36: I/O Conditions
&error
&i/o-error
&i/o-filename-error
&i/o-file-already-exists-error
&i/o-file-protection-error
&i/o-file-is-read-only-error
&i/o-malformed-filename-error
&i/o-no-such-file-error
&i/o-port-error
&i/o-closed-error
&i/o-read-error
&i/o-write-error
&read-error
STklos
STklos supports SRFI 34, SRFI 35, and SRFI 36.