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condition-utils
SRFI 12 Condition Utilities
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- condition-utils
- Documentation
- Argument Conventions
- Usage
- make-exn-condition
- make-exn-condition+
- make-condition+
- make-condition-predicate
- make-condition-property-accessor
- condition-irritants
- write-exn-condition
- write-condition
- condition-predicate*
- condition-property-accessor*
- Standard Condition Library
- Usage
- Condition Predicates
- exn-condition?
- arity-condition?
- type-condition?
- arithmetic-condition?
- i/o-condition?
- file-condition?
- network-condition?
- network-timeout-condition?
- bounds-condition?
- runtime-condition?
- runtime-limit-condition?
- runtime-cycle-condition?
- match-condition?
- syntax-condition?
- process-condition?
- access-condition?
- domain-condition?
- memory-condition?
- Condition Property Accessors
- HTTP Client Condition Library
- Intarweb Condition Library
- Usage
- Condition Predicates
- http-condition?
- urlencoded-request-data-limit-exceeded?
- line-limit-exceeded?
- header-error?
- header-limit-exceeded?
- unknown-protocol-line?
- unknown-protocol?
- unknown-code?
- unknown-status?
- rfc1123-subparser?
- rfc850-subparser?
- asctime-subparser?
- http-date-subparser?
- unencoded-header?
- username-with-colon?
- Condition Property Accessors
- urlencoded-request-data-limit-exceeded-contents
- urlencoded-request-data-limit-exceeded-limit
- line-limit-exceeded-contents
- line-limit-exceeded-limit
- header-error-contents
- header-limit-exceeded-contents
- header-limit-exceeded-limit
- unknown-protocol-line-line
- unknown-protocol-major
- unknown-protocol-minor
- unknown-code-code
- unknown-status-status
- rfc1123-subparser-value?
- rfc850-subparser-value?
- asctime-subparser-value?
- http-date-subparser-value?
- unencoded-header-value?
- username-with-colon-value?
- Bugs & Limitations
- Notes
- Author
- Version history
- License
Documentation
Convenience API for constructing common Chicken exception conditions, predicates, and accessors.
Argument Conventions
LOC is a symbol, or #f.
MSG is a string, or #f.
ARGS is a list, or #f.
CALL-CHAIN is the result of (get-call-chain), or #f.
CONDITION is a property-condition.
CONDITION-SPEC is a:
- CONDITION
- a condition object
- symbol
- (make-property-condition <symbol>)
- list
- (apply make-property-condition <list>)
KIND is a symbol.
PROP is a symbol.
Usage
(require-extension condition-utils)
make-exn-condition
- make-exn-condition #!optional LOC MSG ARGS CALL-CHAINprocedure
Returns an exn property-condition with optional location, arguments, and call-chain property values.
Defaults:
- LOC
- missing
- MSG
- "unknown"
- ARGS
- missing
- CALL-CHAIN
- missing
Will always include message property in the property-condition.
make-exn-condition+
- (make-exn-condition+ LOC MSG ARGS [CALL-CHAIN] [CONDITION-SPEC...]) --> property-conditionprocedure
Returns a composite-condition exn CONDITION-SPEC....
When one-of LOC, MSG, or ARGS is without a useful value in the error context use #f as the actual argument. The optional CALL-CHAIN argument is detected by structure.
When MSG is #f the value "unknown" is used.
make-condition+
- make-condition+ CONDITION-SPEC...procedure
Returns a composite-condition CONDITION-SPEC....
make-condition-predicate
- (make-condition-predicate KIND...) --> (procedure (*) boolean)syntax
Returns a condition-predicate for KIND....
make-condition-property-accessor
- (make-condition-property-accessor KIND PROP [DEFAULT]) --> (procedure (*) boolean)syntax
Returns a condition-property-accessor for KIND PROP. The default value of DEFAULT is #f.
condition-irritants
- condition-irritants CONDITIONprocedure
Returns a list of the condition properties for the condition CONDITION. The form of the list, alist vs. plist, is dependent on the result of the system procedure condition->list.
The properties are without associated condition information.
write-exn-condition
- (write-exn-condition CONDITION [PORT (current-output-port) [HEADER "Error" [CHAIN-HEADER "\n\tCall history:\n"]]])procedure
Produces on PORT the form:
Error: (<location - if any>) <message - if any>: <arguments - if any>
+: <condition-kind>: <condition-property> ... ... for a composite condition ...
Call history: <call-chain>
The call-chain may not be available.
write-condition
- (write-condition CONDITION [PORT (current-output-port) [HEADER "Error"]])procedure
Produces on PORT the form:
Error: <condition-kind>: <condition-property> ...
+: <condition-kind>: <condition-property> ... ... for a composite condition ...
condition-predicate*
- condition-predicate* KINDprocedure
Returns a "memoized" condition-predicate for KIND.
condition-property-accessor*
- (condition-property-accessor* KIND PROP [DEFAULT #f]) --> (condition --> *)procedure
Returns a "memoized" condition-property-accessor for KIND.
Standard Condition Library
Usage
(require-extension standard-conditions)
Condition Predicates
exn-condition?
- exn-condition? CONDITIONprocedure
arity-condition?
- arity-condition? CONDITIONprocedure
type-condition?
- type-condition? CONDITIONprocedure
arithmetic-condition?
- arithmetic-condition? CONDITIONprocedure
i/o-condition?
- i/o-condition? CONDITIONprocedure
file-condition?
- file-condition? CONDITIONprocedure
network-condition?
- network-condition? CONDITIONprocedure
network-timeout-condition?
- network-timeout-condition? CONDITIONprocedure
bounds-condition?
- bounds-condition? CONDITIONprocedure
runtime-condition?
- runtime-condition? CONDITIONprocedure
runtime-limit-condition?
- runtime-limit-condition? CONDITIONprocedure
runtime-cycle-condition?
- runtime-cycle-condition? CONDITIONprocedure
match-condition?
- match-condition? CONDITIONprocedure
syntax-condition?
- syntax-condition? CONDITIONprocedure
process-condition?
- process-condition? CONDITIONprocedure
access-condition?
- access-condition? CONDITIONprocedure
domain-condition?
- domain-condition? CONDITIONprocedure
memory-condition?
- memory-condition? CONDITIONprocedure
Condition Property Accessors
exn-location
- exn-location CONDITIONprocedure
exn-message
- exn-message CONDITIONprocedure
exn-arguments
- exn-arguments CONDITIONprocedure
exn-call-chain
- exn-call-chain CONDITIONprocedure
HTTP Client Condition Library
Usage
(require-extension http-client-conditions)
Condition Predicates
http-condition?
- http-condition? CONDITIONprocedure
client-error-condition?
- client-error-condition? CONDITIONprocedure
server-error-condition?
- server-error-condition? CONDITIONprocedure
unexpected-server-response-condition?
redirect-depth-exceeded-condition?
unsupported-uri-scheme-condition?
unknown-authtype-condition?
Condition Property Accessors
client-error-response
- client-error-response CONDITIONprocedure
client-error-body
- client-error-body CONDITIONprocedure
server-error-response
- server-error-response CONDITIONprocedure
server-error-body
- server-error-body CONDITIONprocedure
unexpected-server-response-response
unexpected-server-response-body
redirect-depth-exceeded-uri
formdata-error-condition?
- formdata-error-condition? CONDITIONprocedure
unsupported-uri-scheme-uri-scheme
unsupported-uri-scheme-request-uri
unknown-authtype-authtype
- unknown-authtype-authtype CONDITIONprocedure
Intarweb Condition Library
Usage
(require-extension intarweb-conditions)
Condition Predicates
http-condition?
- http-condition? CONDITIONprocedure
urlencoded-request-data-limit-exceeded?
line-limit-exceeded?
- line-limit-exceeded? CONDITIONprocedure
header-error?
- header-error? CONDITIONprocedure
header-limit-exceeded?
- header-limit-exceeded? CONDITIONprocedure
unknown-protocol-line?
- unknown-protocol-line? CONDITIONprocedure
unknown-protocol?
- unknown-protocol? CONDITIONprocedure
unknown-code?
- unknown-code? CONDITIONprocedure
unknown-status?
- unknown-status? CONDITIONprocedure
rfc1123-subparser?
- rfc1123-subparser? CONDITIONprocedure
rfc850-subparser?
- rfc850-subparser? CONDITIONprocedure
asctime-subparser?
- asctime-subparser? CONDITIONprocedure
http-date-subparser?
- http-date-subparser? CONDITIONprocedure
unencoded-header?
- unencoded-header? CONDITIONprocedure
username-with-colon?
- username-with-colon? CONDITIONprocedure
Condition Property Accessors
urlencoded-request-data-limit-exceeded-contents
urlencoded-request-data-limit-exceeded-limit
line-limit-exceeded-contents
line-limit-exceeded-limit
- line-limit-exceeded-limit CONDITIONprocedure
header-error-contents
- header-error-contents CONDITIONprocedure
header-limit-exceeded-contents
header-limit-exceeded-limit
unknown-protocol-line-line
- unknown-protocol-line-line CONDITIONprocedure
unknown-protocol-major
- unknown-protocol-major CONDITIONprocedure
unknown-protocol-minor
- unknown-protocol-minor CONDITIONprocedure
unknown-code-code
- unknown-code-code CONDITIONprocedure
unknown-status-status
- unknown-status-status CONDITIONprocedure
rfc1123-subparser-value?
- rfc1123-subparser-value? CONDITIONprocedure
rfc850-subparser-value?
- rfc850-subparser-value? CONDITIONprocedure
asctime-subparser-value?
- asctime-subparser-value? CONDITIONprocedure
http-date-subparser-value?
- http-date-subparser-value? CONDITIONprocedure
unencoded-header-value?
- unencoded-header-value? CONDITIONprocedure
username-with-colon-value?
- username-with-colon-value? CONDITIONprocedure
Bugs & Limitations
- make-exn-condition, make-exn-condition+, and write-exn-condition should be combined with the "standard-conditions.scm" 'exn' predicate & accessors in own "exn-condition" module.
Notes
- write-exn-condition is from write-exception of https://github.com/dleslie/geiser/blob/master/scheme/chicken/geiser/emacs.scm.
Author
Version history
- 1.5.1
- Fix for empty call-chain.
- 1.5.0
- Add types.
- 1.4.2
- Fix #1378
- 1.4.1
- Fix write-exn-condition call-chain header duplication.
- 1.4.0
- Add HEADER to write-exn-condition & write-condition. Add CHAIN-HEADER to write-exn-condition. Follow error form more closely.
- 1.3.0
- write-exn-condition now includes all elements of a composite-condition. Added write-condition.
- 1.2.0
- amended write-exn-condition, add doc for condition libraries.
- 1.1.1
- added write-exn-condition
- 1.1.0
- added make-exn-condition
- 1.0.4
- default exn msg
- 1.0.3
- added call-chain argument & standard conditions
- 1.0.2
- Fix for ticket #630
- 1.0.1
- 1.0.0
- Hello (from "check-errors:1.11.0")
License
Copyright (C) 2009-2017 Kon Lovett. All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the Software), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED ASIS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.