CoercedSlot
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This is a module used by the [[guard-based auditing]] proposal, though it can stand alone. | This is a module used by the [[guard-based auditing]] proposal, though it can stand alone. | ||
| - | [[CoercedSlot]]s implement the [[Slot]] protocol. | + | [[CoercedSlot]]s implement the [[Slot]] protocol. They hold a single value, and the guard it was coerced by; they are immutable. |
==Maker== | ==Maker== | ||
| - | {{maker msgdoc|run| | + | {{maker msgdoc|run|3|<var>guard</var> :[[Guard]], <var>specimen</var>, <var>ejector</var> :[[ExitFunction]]|[[CoercedSlot]]}} |
Makes a CoercedSlot holding the result of <var>guard</var>.coerce(<var>specimen</var>, <var>ejector</var>). | Makes a CoercedSlot holding the result of <var>guard</var>.coerce(<var>specimen</var>, <var>ejector</var>). | ||
| - | {{maker msgdoc|attempt| | + | {{maker msgdoc|attempt|2|<var>guard</var> :[[Guard]], <var>specimen</var>|[[CoercedSlot]]}} |
As run/1 unless the guard ejects, in which case the resulting slot's guard will be [[Guard-based auditing|LostApproval]][<var>guard</var>]. | As run/1 unless the guard ejects, in which case the resulting slot's guard will be [[Guard-based auditing|LostApproval]][<var>guard</var>]. | ||
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Returns the guard that this slot's value was coerced, or otherwise approved, by. | Returns the guard that this slot's value was coerced, or otherwise approved, by. | ||
| + | |||
| + | === __optUncall/0 === | ||
| + | [[Miranda __optUncall|__optUncall]]() :[[Portrayal]] | ||
| + | |||
| + | Returns a portrayal in terms of [[#attempt/1]]. | ||
[[Category:ELib specification]] | [[Category:ELib specification]] | ||
Latest revision as of 04:51, 8 November 2008
This is a module used by the guard-based auditing proposal, though it can stand alone.
CoercedSlots implement the Slot protocol. They hold a single value, and the guard it was coerced by; they are immutable.
Contents |
Maker
run/3
run(guard :Guard, specimen, ejector :ExitFunction) :CoercedSlot
Makes a CoercedSlot holding the result of guard.coerce(specimen, ejector).
attempt/2
attempt(guard :Guard, specimen) :CoercedSlot
As run/1 unless the guard ejects, in which case the resulting slot's guard will be LostApproval[guard].
Protocol
getGuard/0
- Signature: getGuard() :Guard
Returns the guard that this slot's value was coerced, or otherwise approved, by.
__optUncall/0
Returns a portrayal in terms of #attempt/1.
