CoercedSlot
From Erights
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Kevin Reid (Talk | contribs) (document __optUncall behavior) |
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==Maker== | ==Maker== | ||
- | {{maker msgdoc|run|3|<var>guard</var>, <var>specimen</var>, <var>ejector</var>|[[CoercedSlot]]}} | + | {{maker msgdoc|run|3|<var>guard</var> :[[Guard]], <var>specimen</var>, <var>ejector</var> :[[ExitFunc]]|[[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|2|<var>guard</var>, <var> | + | {{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>]. |
Revision as of 04:34, 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 :ExitFunc) :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
__optUncall/0
- Signature: __optUncall() :Portrayal
Returns a portrayal in terms of #attempt/1.