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<!-- Weave of '3/dvc' generated by 7 -->
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< ul class = "crumbs" > < li > < a href = "../webs.html" > Source< / a > < / li > < li > < a href = "../compiler.html" > Compiler Modules< / a > < / li > < li > < a href = "index.html" > if< / a > < / li > < li > < a href = "index.html#3" > Chapter 3: Space and Time< / a > < / li > < li > < b > Devices< / b > < / li > < / ul > < p class = "purpose" > A plugin giving minimal support for switchable devices.< / p >
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< p class = "inwebparagraph" > < a id = "SP1" > < / a > < b > § 1. < / b > The Devices plugin does just one thing: it applies an indicator property
to things of the kind "device". This used to be accomplished by the Standard
Rules in a clumsy sort of way (with a direct I6 code injection), but in the
age of Inter we want to avoid that sort of tomfoolery.
< / p >
< pre class = "display" >
< span class = "identifier" > kind< / span > < span class = "plain" > *< / span > < span class = "identifier" > K_device< / span > < span class = "plain" > = < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ;< / span >
< span class = "identifier" > property< / span > < span class = "plain" > *< / span > < span class = "identifier" > P_switchable< / span > < span class = "plain" > = < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ;< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
< p class = "inwebparagraph" > < a id = "SP2" > < / a > < b > § 2. < / b > < / p >
< pre class = "display" >
< span class = "reserved" > void< / span > < span class = "plain" > < / span > < span class = "functiontext" > PL::Devices::start< / span > < span class = "plain" > (< / span > < span class = "reserved" > void< / span > < span class = "plain" > ) {< / span >
< span class = "identifier" > PLUGIN_REGISTER< / span > < span class = "plain" > (< / span > < span class = "identifier" > PLUGIN_NEW_BASE_KIND_NOTIFY< / span > < span class = "plain" > , < / span > < span class = "functiontext" > PL::Devices::devices_new_base_kind_notify< / span > < span class = "plain" > );< / span >
< span class = "identifier" > PLUGIN_REGISTER< / span > < span class = "plain" > (< / span > < span class = "identifier" > PLUGIN_COMPLETE_MODEL< / span > < span class = "plain" > , < / span > < span class = "functiontext" > PL::Devices::IF_complete_model< / span > < span class = "plain" > );< / span >
< span class = "plain" > }< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
< p class = "endnote" > The function PL::Devices::start appears nowhere else.< / p >
< p class = "inwebparagraph" > < a id = "SP3" > < / a > < b > § 3. < / b > < / p >
< pre class = "display" >
< span class = "plain" > < < / span > < span class = "identifier" > notable< / span > < span class = "plain" > -< / span > < span class = "identifier" > device< / span > < span class = "plain" > -< / span > < span class = "identifier" > kinds< / span > < span class = "plain" > > ::=< / span >
< span class = "identifier" > device< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
< p class = "inwebparagraph" > < a id = "SP4" > < / a > < b > § 4. < / b > < / p >
< pre class = "display" >
< span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "functiontext" > PL::Devices::devices_new_base_kind_notify< / span > < span class = "plain" > (< / span > < span class = "identifier" > kind< / span > < span class = "plain" > *< / span > < span class = "identifier" > new_base< / span > < span class = "plain" > , < / span > < span class = "identifier" > text_stream< / span > < span class = "plain" > *< / span > < span class = "identifier" > name< / span > < span class = "plain" > , < / span > < span class = "identifier" > wording< / span > < span class = "plain" > < / span > < span class = "identifier" > W< / span > < span class = "plain" > ) {< / span >
< span class = "reserved" > if< / span > < span class = "plain" > (< < / span > < span class = "identifier" > notable< / span > < span class = "plain" > -< / span > < span class = "identifier" > device< / span > < span class = "plain" > -< / span > < span class = "identifier" > kinds< / span > < span class = "plain" > > (< / span > < span class = "identifier" > W< / span > < span class = "plain" > )) { < / span > < span class = "identifier" > K_device< / span > < span class = "plain" > = < / span > < span class = "identifier" > new_base< / span > < span class = "plain" > ; < / span > < span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > TRUE< / span > < span class = "plain" > ; }< / span >
< span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > FALSE< / span > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
< p class = "endnote" > The function PL::Devices::devices_new_base_kind_notify is used in < a href = "#SP2" > § 2< / a > .< / p >
< p class = "inwebparagraph" > < a id = "SP5" > < / a > < b > § 5. < / b > < / p >
< pre class = "display" >
< span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "functiontext" > PL::Devices::IF_complete_model< / span > < span class = "plain" > (< / span > < span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "identifier" > stage< / span > < span class = "plain" > ) {< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > stage< / span > < span class = "plain" > == < / span > < span class = "constant" > 3< / span > < span class = "plain" > ) {< / span >
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< span class = "identifier" > P_switchable< / span > < span class = "plain" > = < / span > < span class = "identifier" > Properties::EitherOr::new_nameless< / span > < span class = "plain" > (< / span > < span class = "identifier" > L< / span > < span class = "string" > "switchable"< / span > < span class = "plain" > );< / span >
< span class = "identifier" > Properties::EitherOr::implement_as_attribute< / span > < span class = "plain" > (< / span > < span class = "identifier" > P_switchable< / span > < span class = "plain" > , < / span > < span class = "identifier" > TRUE< / span > < span class = "plain" > );< / span >
< span class = "identifier" > instance< / span > < span class = "plain" > *< / span > < span class = "identifier" > I< / span > < span class = "plain" > ;< / span >
< span class = "identifier" > LOOP_OVER_OBJECT_INSTANCES< / span > < span class = "plain" > (< / span > < span class = "identifier" > I< / span > < span class = "plain" > )< / span >
< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > Instances::of_kind< / span > < span class = "plain" > (< / span > < span class = "identifier" > I< / span > < span class = "plain" > , < / span > < span class = "identifier" > K_device< / span > < span class = "plain" > ))< / span >
< span class = "identifier" > Properties::EitherOr::assert< / span > < span class = "plain" > (< / span >
< span class = "identifier" > P_switchable< / span > < span class = "plain" > , < / span > < span class = "identifier" > Instances::as_subject< / span > < span class = "plain" > (< / span > < span class = "identifier" > I< / span > < span class = "plain" > ), < / span > < span class = "identifier" > TRUE< / span > < span class = "plain" > , < / span > < span class = "identifier" > CERTAIN_CE< / span > < span class = "plain" > );< / span >
< span class = "plain" > }< / span >
< span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > FALSE< / span > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
< p class = "endnote" > The function PL::Devices::IF_complete_model is used in < a href = "#SP2" > § 2< / a > .< / p >
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< ul class = "toc" > < li > < a href = "3-tp.html" > Back to 'The Player'< / a > < / li > < li > < a href = "3-bck.html" > Continue with 'Backdrops'< / a > < / li > < / ul > < hr class = "tocbar" >
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