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< ul class = "crumbs" > < li > < a href = "../index.html" > Home< / a > < / li > < li > < a href = "../inform7n.html" > Inform7< / a > < / li > < li > < a href = "index.html" > runtime< / a > < / li > < li > < a href = "index.html#6" > Chapter 6: Completion Resources< / a > < / li > < li > < b > Action Bitmap Property< / b > < / li > < / ul > < / div >
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< p class = "purpose" > To compile tiny arrays as values of the action_bitmap property.< / p >
< p class = "commentary firstcommentary" > < a id = "SP1" class = "paragraph-anchor" > < / a > < b > § 1. < / b > This is all in service of a feature I would quite like to lose: recording,
with a flag, which actions have happened to which objects. We store this bitmap
in 16-bit fields inside an array of words; on a 32-bit VM, that wastes the
remaining bits, but then on a 32-bit VN memory is not scarce in quite that way.
< / p >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "identifier-syntax" > parse_node< / span > < span class = "plain-syntax" > *< / span > < span class = "function-syntax" > RTActionBitmaps::compile_action_bitmap_property< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > inference_subject< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > subj< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > package_request< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > = < / span > < a href = "6-pp.html#SP1" class = "function-link" > < span class = "function-syntax" > RTPropertyPermissions::home< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > subj< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > inter_name< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > N< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > instance< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > I< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > InstanceSubjects::to_instance< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > subj< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > I< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > package_request< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > PR< / span > < span class = "plain-syntax" > = < / span > < a href = "2-hrr.html#SP21" class = "function-link" > < span class = "function-syntax" > Hierarchy::package_within< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > INLINE_PROPERTIES_HAP< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > N< / span > < span class = "plain-syntax" > = < / span > < a href = "2-hrr.html#SP12" class = "function-link" > < span class = "function-syntax" > Hierarchy::make_iname_in< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > INLINE_PROPERTY_HL< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > PR< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > } < / span > < span class = "reserved-syntax" > else< / span > < span class = "plain-syntax" > {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > package_request< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > PR< / span > < span class = "plain-syntax" > = < / span > < a href = "2-hrr.html#SP21" class = "function-link" > < span class = "function-syntax" > Hierarchy::package_within< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > KIND_INLINE_PROPERTIES_HAP< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > N< / span > < span class = "plain-syntax" > = < / span > < a href = "2-hrr.html#SP12" class = "function-link" > < span class = "function-syntax" > Hierarchy::make_iname_in< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > KIND_INLINE_PROPERTY_HL< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > PR< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > }< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > packaging_state< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > save< / span > < span class = "plain-syntax" > = < / span > < a href = "2-ea.html#SP2" class = "function-link" > < span class = "function-syntax" > EmitArrays::begin_inline< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > N< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > K_number< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > for< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > i< / span > < span class = "plain-syntax" > =0; < / span > < span class = "identifier-syntax" > i< / span > < span class = "plain-syntax" > < =((< / span > < span class = "identifier-syntax" > NUMBER_CREATED< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > action_name< / span > < span class = "plain-syntax" > ))/16); < / span > < span class = "identifier-syntax" > i< / span > < span class = "plain-syntax" > ++) < / span > < a href = "2-ea.html#SP4" class = "function-link" > < span class = "function-syntax" > EmitArrays::numeric_entry< / span > < / a > < span class = "plain-syntax" > (0);< / span >
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< span class = "plain-syntax" > < / span > < a href = "2-ea.html#SP5" class = "function-link" > < span class = "function-syntax" > EmitArrays::end< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > save< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Rvalues::from_iname< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > N< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > }< / span >
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