condition-utils | chickadee

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.

CHICKEN 4: alist
CHICKEN 5: plist

The properties are without associated condition information.

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 ...

EXN Condition Library

Usage

(import exn-condition)

make-exn-condition

make-exn-condition #!optional LOC MSG ARGS CALL-CHAIN ERRNOprocedure

Returns an exn property-condition with optional location, arguments, call-chain, and errno property values.

Defaults:

LOC: missing
MSG: "unknown"
ARGS: missing
CALL-CHAIN: missing
ERRNO: missing

Will always include message property in the property-condition.

make-exn-condition*

(make-exn-condition* [location:] [message:] [arguments:] [call-chain:] [errno:]) -> property-conditionprocedure

Returns an exn property-condition with optional location, arguments, call-chain, and errno property values.

Defaults:

location: missing
message: "unknown"
arguments: missing
call-chain:: missing
errno: missing

Will always include message property in the property-condition.

make-exn-condition+

(make-exn-condition+ LOC MSG ARGS [CALL-CHAIN] [ERRNO] [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 & ERRNO arguments are detected by type & structure.

When MSG is #f the value "unknown" is used.

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.

Standard Condition Library

Usage

(import standard-conditions)

Condition Predicates

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

HTTP Client Condition Library

Usage

(import 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?

unexpected-server-response-condition? CONDITIONprocedure

redirect-depth-exceeded-condition?

redirect-depth-exceeded-condition? CONDITIONprocedure

unsupported-uri-scheme-condition?

unsupported-uri-scheme-condition? CONDITIONprocedure

unknown-authtype-condition?

unknown-authtype-condition? CONDITIONprocedure

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-response CONDITIONprocedure

unexpected-server-response-body

unexpected-server-response-body CONDITIONprocedure

redirect-depth-exceeded-uri

redirect-depth-exceeded-uri CONDITIONprocedure

formdata-error-condition?

formdata-error-condition? CONDITIONprocedure

unsupported-uri-scheme-uri-scheme

unsupported-uri-scheme-uri-scheme CONDITIONprocedure

unsupported-uri-scheme-request-uri

unsupported-uri-scheme-request-uri CONDITIONprocedure

unknown-authtype-authtype

unknown-authtype-authtype CONDITIONprocedure

Intarweb Condition Library

Usage

(import intarweb-conditions)

Condition Predicates

http-condition?

http-condition? CONDITIONprocedure

urlencoded-request-data-limit-exceeded?

urlencoded-request-data-limit-exceeded? CONDITIONprocedure

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-contents CONDITIONprocedure

urlencoded-request-data-limit-exceeded-limit

urlencoded-request-data-limit-exceeded-limit CONDITIONprocedure

line-limit-exceeded-contents

line-limit-exceeded-contents CONDITIONprocedure

line-limit-exceeded-limit

line-limit-exceeded-limit CONDITIONprocedure

header-error-contents

header-error-contents CONDITIONprocedure

header-limit-exceeded-contents

header-limit-exceeded-contents CONDITIONprocedure

header-limit-exceeded-limit

header-limit-exceeded-limit CONDITIONprocedure

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

Condition Libraries w/ Runtime Lookup

Usage Example

(import (rename (standard-conditions memo) (get standard-conditions-get)))
(import (rename (intarweb-conditions memo) (get intarweb-conditions-get)))
(import (rename (http-client-conditions memo) (get http-client-conditions-get)))

(define unexpected-server-response-response (http-client-conditions-get 'unexpected-server-response-response)

Bugs & Limitations

SRFI 12 accepts any object as a condition kind or property tag, even #f. This extension restricts such to (not #f)!

Notes

write-exn-condition is from write-exception of https://github.com/dleslie/geiser/blob/master/scheme/chicken/geiser/emacs.scm.

Repository

This egg is hosted on the CHICKEN Subversion repository:

https://anonymous@code.call-cc.org/svn/chicken-eggs/release/5/condition-utils

If you want to check out the source code repository of this egg and you are not familiar with Subversion, see this page.

Version history

2.3.1: Fix condition predicate & accessor caching.
2.3.0: Add errno & make-exn-condition*.
2.2.2: .
2.2.1: .
2.2.0: Add condition library runtime lookup get API.
2.1.4: .
2.1.3: .
2.1.2: .
2.1.1: .
2.1.0: CHICKEN 5 release.
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")

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