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<!-- Weave of 'Census' generated by Inweb -->
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< div class = "breadcrumbs" >
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< ul class = "crumbs" > < li > < a href = "../index.html" > Home< / a > < / li > < li > < a href = "../inbuildn.html" > Inbuild Modules< / a > < / li > < li > < a href = "index.html" > supervisor< / a > < / li > < li > < a href = "index.html#7" > Chapter 7: Extension Indexing< / a > < / li > < li > < b > Census< / b > < / li > < / ul > < / div >
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< p class = "purpose" > To conduct a census of all installed extensions installed.< / p >
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< ul class = "toc" > < li > < a href = "7-cns.html#SP1" > § 1. Beginning< / a > < / li > < li > < a href = "7-cns.html#SP4" > § 4. Census data< / a > < / li > < li > < a href = "7-cns.html#SP6" > § 6. Performing the census< / a > < / li > < / ul > < hr class = "tocbar" >
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< p class = "commentary firstcommentary" > < a id = "SP1" class = "paragraph-anchor" > < / a > < b > § 1. Beginning. < / b > Each census begins by creating an object:
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
< span class = "reserved-syntax" > typedef< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > extension_census< / span > < span class = "plain-syntax" > {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > linked_list< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > search_list< / span > < span class = "plain-syntax" > ; < / span > < span class = "comment-syntax" > of < / span > < span class = "extract" > < span class = "extract-syntax" > inbuild_nest< / span > < / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > linked_list< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > census_data< / span > < span class = "plain-syntax" > ; < / span > < span class = "comment-syntax" > of < / span > < span class = "extract" > < span class = "extract-syntax" > extension_census_datum< / span > < / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > linked_list< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > raw_data< / span > < span class = "plain-syntax" > ; < / span > < span class = "comment-syntax" > of < / span > < span class = "extract" > < span class = "extract-syntax" > inbuild_search_result< / span > < / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > no_census_errors< / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > CLASS_DEFINITION< / span >
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< span class = "plain-syntax" > } < / span > < span class = "reserved-syntax" > extension_census< / span > < span class = "plain-syntax" > ;< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > The structure extension_census is accessed in 5/es, 5/ps2 and here.< / li > < / ul >
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< p class = "commentary firstcommentary" > < a id = "SP2" class = "paragraph-anchor" > < / a > < b > § 2. < / b > Here < span class = "extract" > < span class = "extract-syntax" > proj< / span > < / span > will be null in case (a), and will be the project just
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compiled in case (b).
< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "reserved-syntax" > extension_census< / span > < span class = "plain-syntax" > *< / span > < span class = "function-syntax" > ExtensionCensus::new< / span > < button class = "popup" onclick = "togglePopup('usagePopup1')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup1" > Usage of < span class = "code-font" > < span class = "function-syntax" > ExtensionCensus::new< / span > < / span > :< br / > < a href = "7-cns.html#SP6" > § 6< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > inform_project< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > proj< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > extension_census< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > CREATE< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > extension_census< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > proj< / 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" > C< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > search_list< / span > < span class = "plain-syntax" > = < / span > < a href = "5-ps2.html#SP7" class = "function-link" > < span class = "function-syntax" > Projects::nest_list< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > proj< / 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" > C< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > search_list< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > NEW_LINKED_LIST< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > inbuild_nest< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > ADD_TO_LINKED_LIST< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > search_list< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > inbuild_nest< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > proj< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > search_list< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > inbuild_nest< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > N< / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > linked_list< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > = < / span > < a href = "1-ic.html#SP16" class = "function-link" > < span class = "function-syntax" > Supervisor::shared_nest_list< / span > < / a > < span class = "plain-syntax" > ();< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > LOOP_OVER_LINKED_LIST< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > N< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > inbuild_nest< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > )< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "2-nst.html#SP2" class = "function-link" > < span class = "function-syntax" > Nests::get_tag< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > N< / span > < span class = "plain-syntax" > ) == < / span > < span class = "constant-syntax" > INTERNAL_NEST_TAG< / span > < span class = "plain-syntax" > )< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > ADD_TO_LINKED_LIST< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > N< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > inbuild_nest< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > search_list< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > }< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > census_data< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > NEW_LINKED_LIST< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > extension_census_datum< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > raw_data< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > NEW_LINKED_LIST< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > inbuild_search_result< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > no_census_errors< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP3" class = "paragraph-anchor" > < / a > < b > § 3. < / b > Each census object has its own search path for nests — for case (a) the
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shared search path, for (b) the project's search path.
< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "identifier-syntax" > pathname< / span > < span class = "plain-syntax" > *< / span > < span class = "function-syntax" > ExtensionCensus::internal_path< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > extension_census< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > inbuild_nest< / 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" > LOOP_OVER_LINKED_LIST< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > N< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > inbuild_nest< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > search_list< / span > < span class = "plain-syntax" > )< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "2-nst.html#SP2" class = "function-link" > < span class = "function-syntax" > Nests::get_tag< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > N< / span > < span class = "plain-syntax" > ) == < / span > < span class = "constant-syntax" > INTERNAL_NEST_TAG< / span > < span class = "plain-syntax" > )< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < a href = "4-em.html#SP3" class = "function-link" > < span class = "function-syntax" > ExtensionManager::path_within_nest< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > N< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< span class = "identifier-syntax" > pathname< / span > < span class = "plain-syntax" > *< / span > < span class = "function-syntax" > ExtensionCensus::external_path< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > extension_census< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > inbuild_nest< / 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" > LOOP_OVER_LINKED_LIST< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > N< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > inbuild_nest< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > search_list< / span > < span class = "plain-syntax" > )< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "2-nst.html#SP2" class = "function-link" > < span class = "function-syntax" > Nests::get_tag< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > N< / span > < span class = "plain-syntax" > ) == < / span > < span class = "constant-syntax" > EXTERNAL_NEST_TAG< / span > < span class = "plain-syntax" > )< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < a href = "4-em.html#SP3" class = "function-link" > < span class = "function-syntax" > ExtensionManager::path_within_nest< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > N< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP4" class = "paragraph-anchor" > < / a > < b > § 4. Census data. < / b > For each inhabitant found, so to speak, an instance of < a href = "7-cns.html#SP4" class = "internal" > extension_census_datum< / a >
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is created. (These are called ECDs below.)
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
< span class = "reserved-syntax" > typedef< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > extension_census_datum< / span > < span class = "plain-syntax" > {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > inbuild_search_result< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > found_as< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > overriding_a_built_in_extension< / span > < span class = "plain-syntax" > ; < / span > < span class = "comment-syntax" > not built in, but overriding one which is< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > extension_census_datum< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > next< / span > < span class = "plain-syntax" > ; < / span > < span class = "comment-syntax" > next one in lexicographic order< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > CLASS_DEFINITION< / span >
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< span class = "plain-syntax" > } < / span > < span class = "reserved-syntax" > extension_census_datum< / span > < span class = "plain-syntax" > ;< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > The structure extension_census_datum is accessed in 6/hdn, 6/inc, 7/dct, 7/ip2 and here.< / li > < / ul >
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< p class = "commentary firstcommentary" > < a id = "SP5" class = "paragraph-anchor" > < / a > < b > § 5. < / b > An ECD is actually a wrapper for an < a href = "5-es.html#SP1" class = "internal" > inform_extension< / a > object in disguise,
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since the < a href = "2-nst.html#SP7" class = "internal" > inbuild_search_result< / a > found that.
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "identifier-syntax" > text_stream< / span > < span class = "plain-syntax" > *< / span > < span class = "function-syntax" > ExtensionCensus::ecd_rubric< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > extension_census_datum< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > ecd< / 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 > < a href = "5-es.html#SP14" class = "function-link" > < span class = "function-syntax" > Extensions::get_rubric< / span > < / a > < span class = "plain-syntax" > (< / span > < a href = "5-es.html#SP4" class = "function-link" > < span class = "function-syntax" > Extensions::from_copy< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > ecd< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > found_as< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > copy< / span > < span class = "plain-syntax" > ));< / span >
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< span class = "plain-syntax" > }< / span >
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< span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > ExtensionCensus::installation_region< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > extension_census_datum< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > ecd< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "2-nst.html#SP2" class = "function-link" > < span class = "function-syntax" > Nests::get_tag< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > ecd< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > found_as< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > nest< / span > < span class = "plain-syntax" > ) == < / span > < span class = "constant-syntax" > MATERIALS_NEST_TAG< / span > < span class = "plain-syntax" > ) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "2-nst.html#SP2" class = "function-link" > < span class = "function-syntax" > Nests::get_tag< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > ecd< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > found_as< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > nest< / span > < span class = "plain-syntax" > ) == < / span > < span class = "constant-syntax" > INTERNAL_NEST_TAG< / span > < span class = "plain-syntax" > ) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > 1< / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > ecd< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > overriding_a_built_in_extension< / span > < span class = "plain-syntax" > ) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > 2< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > 3< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > ExtensionCensus::ecd_used< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > extension_census_datum< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > ecd< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > inform_extension< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > E< / span > < span class = "plain-syntax" > = < / span > < a href = "5-es.html#SP4" class = "function-link" > < span class = "function-syntax" > Extensions::from_copy< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > ecd< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > found_as< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > copy< / 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" > E< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > has_historically_been_used< / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > }< / span >
< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP6" class = "paragraph-anchor" > < / a > < b > § 6. Performing the census. < / b > For some reason a census often makes a good story (cf. Luke 2:1-5), but here
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there's disappointingly little to tell, because the work is all done by a
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single call to < a href = "2-nst.html#SP9" class = "internal" > Nests::search_for< / a > .
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "reserved-syntax" > extension_census< / span > < span class = "plain-syntax" > *< / span > < span class = "function-syntax" > ExtensionCensus::perform< / span > < button class = "popup" onclick = "togglePopup('usagePopup2')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup2" > Usage of < span class = "code-font" > < span class = "function-syntax" > ExtensionCensus::perform< / span > < / span > :< br / > The Mini-Website - < a href = "7-tm.html#SP2" > § 2< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > inform_project< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > proj< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > extension_census< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > = < / span > < a href = "7-cns.html#SP2" class = "function-link" > < span class = "function-syntax" > ExtensionCensus::new< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > proj< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > inbuild_requirement< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > req< / span > < span class = "plain-syntax" > = < / span > < a href = "2-rqr.html#SP2" class = "function-link" > < span class = "function-syntax" > Requirements::anything_of_genre< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > extension_genre< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > < / span > < a href = "2-nst.html#SP9" class = "function-link" > < span class = "function-syntax" > Nests::search_for< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > req< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > search_list< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > raw_data< / span > < span class = "plain-syntax" > );< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > inbuild_search_result< / 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" > LOOP_OVER_LINKED_LIST< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > inbuild_search_result< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > raw_data< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > no_census_errors< / span > < span class = "plain-syntax" > += < / span > < span class = "identifier-syntax" > LinkedLists::len< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > copy< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > errors_reading_source_text< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > overridden_by_an_extension_already_found< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "7-cns.html#SP6_1" class = "named-paragraph-link" > < span class = "named-paragraph" > See if already known from existing data< / span > < span class = "named-paragraph-number" > 6.1< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > overridden_by_an_extension_already_found< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > FALSE< / span > < span class = "plain-syntax" > )< / span >
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< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "7-cns.html#SP6_2" class = "named-paragraph-link" > < span class = "named-paragraph" > Add to the census data< / span > < span class = "named-paragraph-number" > 6.2< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
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< 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" > C< / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > }< / span >
< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP6_1" class = "paragraph-anchor" > < / a > < b > § 6.1. < / b > Recall that the higher-priority materials and external nests are scanned
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first, so if we find that our new extension has the same title and author as
one already known, it must be one that is overridden.
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< / p >
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< p class = "commentary" > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > See if already known from existing data< / span > < span class = "named-paragraph-number" > 6.1< / span > < / span > < span class = "comment-syntax" > =< / span >
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > extension_census_datum< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > other< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > LOOP_OVER_LINKED_LIST< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > other< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > extension_census_datum< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > C< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > census_data< / span > < span class = "plain-syntax" > )< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < a href = "2-wrk.html#SP9" class = "function-link" > < span class = "function-syntax" > Works::match< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > copy< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > edition< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > work< / span > < span class = "plain-syntax" > ,< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > other< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > found_as< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > copy< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > edition< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > work< / span > < span class = "plain-syntax" > )) & & < / span >
< span class = "plain-syntax" > ((< / span > < a href = "2-nst.html#SP2" class = "function-link" > < span class = "function-syntax" > Nests::get_tag< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > other< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > found_as< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > nest< / span > < span class = "plain-syntax" > ) == < / span > < span class = "constant-syntax" > INTERNAL_NEST_TAG< / span > < span class = "plain-syntax" > ) ||< / span >
< span class = "plain-syntax" > (< / span > < a href = "2-nst.html#SP2" class = "function-link" > < span class = "function-syntax" > Nests::get_tag< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > nest< / span > < span class = "plain-syntax" > ) == < / span > < span class = "constant-syntax" > INTERNAL_NEST_TAG< / span > < span class = "plain-syntax" > ))) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > other< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > overriding_a_built_in_extension< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > TRUE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > overridden_by_an_extension_already_found< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > TRUE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > This code is used in < a href = "7-cns.html#SP6" > § 6< / a > .< / li > < / ul >
< p class = "commentary firstcommentary" > < a id = "SP6_2" class = "paragraph-anchor" > < / a > < b > § 6.2. < / b > Assuming the new extension was not overridden in this way, we come here.
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Because we didn't check the version number text for validity, it might
through being invalid be longer than we expect: in case this is so, we
truncate it.
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< / p >
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< p class = "commentary" > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Add to the census data< / span > < span class = "named-paragraph-number" > 6.2< / span > < / span > < span class = "comment-syntax" > =< / span >
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > extension_census_datum< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > ecd< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > CREATE< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > extension_census_datum< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > ecd< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > found_as< / 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" > ecd< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > overriding_a_built_in_extension< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > ecd< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > next< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ;< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > This code is used in < a href = "7-cns.html#SP6" > § 6< / a > .< / li > < / ul >
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< nav role = "progress" > < div class = "progresscontainer" >
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< ul class = "progressbar" > < li class = "progressprev" > < a href = "7-dct.html" > ❮ < / a > < / li > < li class = "progresschapter" > < a href = "P-wtmd.html" > P< / a > < / li > < li class = "progresschapter" > < a href = "1-sm.html" > 1< / a > < / li > < li class = "progresschapter" > < a href = "2-gnr.html" > 2< / a > < / li > < li class = "progresschapter" > < a href = "3-bg.html" > 3< / a > < / li > < li class = "progresschapter" > < a href = "4-em.html" > 4< / a > < / li > < li class = "progresschapter" > < a href = "5-es.html" > 5< / a > < / li > < li class = "progresschapter" > < a href = "6-st.html" > 6< / a > < / li > < li class = "progresscurrentchapter" > 7< / li > < li class = "progresssection" > < a href = "7-tm.html" > tm< / a > < / li > < li class = "progresssection" > < a href = "7-dct.html" > dct< / a > < / li > < li class = "progresscurrent" > cns< / li > < li class = "progresssection" > < a href = "7-ip.html" > ip< / a > < / li > < li class = "progresssection" > < a href = "7-ip2.html" > ip2< / a > < / li > < li class = "progresssection" > < a href = "7-tr.html" > tr< / a > < / li > < li class = "progressnext" > < a href = "7-ip.html" > ❯ < / a > < / li > < / ul > < / div >
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< / nav > <!-- End of weave -->
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< / main >
< / body >
< / html >
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