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<!-- Weave of 'Measurement Adjectives' generated by 7 -->
< ul class = "crumbs" > < li > < a href = "../index.html" > Home< / a > < / li > < li > < a href = "../compiler.html" > Inform7 Modules< / a > < / li > < li > < a href = "index.html" > core< / a > < / li > < li > < a href = "index.html#15" > Chapter 15: Properties< / a > < / li > < li > < b > Measurement Adjectives< / b > < / li > < / ul > < p class = "purpose" > To define adjectives such as large, wide or roomy, which make implicit comparisons of the size of some numerical property, and which (unlike other adjectives) lead to comparative and superlative forms.< / p >
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< ul class = "toc" > < li > < a href = "15-ma.html#SP1" > § 1. Definitions< / a > < / li > < li > < a href = "15-ma.html#SP5" > § 5. Measurements< / a > < / li > < li > < a href = "15-ma.html#SP10" > § 10. Adjectives arising from measurements< / a > < / li > < li > < a href = "15-ma.html#SP13" > § 13. Support routines for measurement< / a > < / li > < li > < a href = "15-ma.html#SP14" > § 14. Comparative forms< / a > < / li > < li > < a href = "15-ma.html#SP15" > § 15. Late registration of prepositions comparing properties< / a > < / li > < / ul > < hr class = "tocbar" >
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< p class = "inwebparagraph" > < a id = "SP1" > < / a > < b > § 1. Definitions. < / b > < / p >
< p class = "inwebparagraph" > < a id = "SP2" > < / a > < b > § 2. < / b > A typical example would be:
< / p >
< blockquote >
< p > Definition: A container is roomy if its carrying capacity is 10 or more.< / p >
< / blockquote >
< p class = "inwebparagraph" > Here the domain of the definition is "container", and we must assign
an adjective meaning for "roomy" which involves the comparison of a
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property (here "carrying capacity") against a threshold value \(t\) (here,
\(t=10\)). Each such definition allows the property value to belong to a
"region": we are looking for membership of \(\lbrace x\mid x\leq t\rbrace\),
\(\lbrace t\rbrace\) or \(\lbrace x\mid x\geq t\rbrace\). The following constants
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enumerate the possible shapes of this region.
< / p >
< pre class = "definitions" >
< span class = "definitionkeyword" > define< / span > < span class = "constant" > MEASURE_T_OR_LESS< / span > < span class = "plain" > -1< / span >
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< span class = "definitionkeyword" > define< / span > < span class = "constant" > MEASURE_T_EXACTLY< / span > < span class = "plain" > < / span > < span class = "constant" > 0< / span >
< span class = "definitionkeyword" > define< / span > < span class = "constant" > MEASURE_T_OR_MORE< / span > < span class = "plain" > < / span > < span class = "constant" > 1< / span >
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< / pre >
< p class = "inwebparagraph" > < a id = "SP3" > < / a > < b > § 3. < / b > We then need to create the comparative form "roomier" as a relation, and the
superlative "roomiest" as a phrasal form — not in general an adjective, since
its domain is too ambiguous in text such as:
< / p >
< blockquote >
< p > if the canvas bag is roomiest, ...< / p >
< / blockquote >
< p class = "inwebparagraph" > which begs the question: roomiest out of what? All containers, or implicitly
some subcollection of them? So we avoid the problem by allowing superlatives
only when explicitly followed by a domain:
< / p >
< blockquote >
< p > roomiest container in Heathrow Terminal 5< / p >
< / blockquote >
< p class = "inwebparagraph" > The word "roomy" is the headword, so called in the lexicography sense —
other forms are derived from it but they all appear under "roomy" in
the Phrasebook.
< / p >
< p class = "inwebparagraph" > < a id = "SP4" > < / a > < b > § 4. < / b > The implementation of measurement adjectives is tricksy for reasons of
timing during Inform's run: the names of kinds, properties and values become
available at different times; whereas we need the name of the adjective
itself to become available very early on. This is why the structure below
appears to record a lot of extraneous clutter apparently needed only
temporarily during parsing — because parsing does not happen all at once,
and partial results have to be parked in the structure after one stage to
be picked up at the next.
< / p >
< p class = "inwebparagraph" > At any rate, here's the structure:
< / p >
< pre class = "display" >
< span class = "reserved" > typedef< / span > < span class = "plain" > < / span > < span class = "reserved" > struct< / span > < span class = "plain" > < / span > < span class = "reserved" > measurement_definition< / span > < span class = "plain" > {< / span >
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< span class = "reserved" > struct< / span > < span class = "plain" > < / span > < span class = "identifier" > parse_node< / span > < span class = "plain" > *< / span > < span class = "identifier" > measurement_node< / span > < span class = "plain" > ; < / span > < span class = "comment" > where the actual definition is< / span >
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< span class = "reserved" > struct< / span > < span class = "plain" > < / span > < span class = "identifier" > wording< / span > < span class = "plain" > < / span > < span class = "identifier" > headword< / span > < span class = "plain" > ; < / span > < span class = "comment" > adjective being defined (must be single word)< / span >
< span class = "reserved" > struct< / span > < span class = "plain" > < / span > < span class = "reserved" > adjective_meaning< / span > < span class = "plain" > *< / span > < span class = "identifier" > headword_as_adjective< / span > < span class = "plain" > ; < / span > < span class = "comment" > which adjective meaning< / span >
< span class = "reserved" > struct< / span > < span class = "plain" > < / span > < span class = "identifier" > wording< / span > < span class = "plain" > < / span > < span class = "identifier" > superlative< / span > < span class = "plain" > ; < / span > < span class = "comment" > its superlative form< / span >
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< span class = "reserved" > struct< / span > < span class = "plain" > < / span > < span class = "reserved" > property< / span > < span class = "plain" > *< / span > < span class = "identifier" > prop< / span > < span class = "plain" > ; < / span > < span class = "comment" > the property being compared, if any< / span >
< span class = "reserved" > struct< / span > < span class = "plain" > < / span > < span class = "identifier" > wording< / span > < span class = "plain" > < / span > < span class = "identifier" > name_of_property_to_compare< / span > < span class = "plain" > ; < / span > < span class = "comment" > text of the name of the property to compare< / span >
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< span class = "reserved" > struct< / span > < span class = "plain" > < / span > < span class = "identifier" > inter_name< / span > < span class = "plain" > *< / span > < span class = "identifier" > mdef_iname< / span > < span class = "plain" > ;< / span >
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< span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "identifier" > region_shape< / span > < span class = "plain" > ; < / span > < span class = "comment" > one of the < code class = "display" > < span class = "extract" > MEASURE_T_*< / span > < / code > constants< / span >
< span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "identifier" > region_threshold< / span > < span class = "plain" > ; < / span > < span class = "comment" > numerical value of threshold (if any)< / span >
< span class = "reserved" > struct< / span > < span class = "plain" > < / span > < span class = "identifier" > kind< / span > < span class = "plain" > *< / span > < span class = "identifier" > region_kind< / span > < span class = "plain" > ; < / span > < span class = "comment" > of this value< / span >
< span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "identifier" > region_threshold_evaluated< / span > < span class = "plain" > ; < / span > < span class = "comment" > have we evaluated this one yet?< / span >
< span class = "reserved" > struct< / span > < span class = "plain" > < / span > < span class = "identifier" > wording< / span > < span class = "plain" > < / span > < span class = "identifier" > region_threshold_text< / span > < span class = "plain" > ; < / span > < span class = "comment" > text of threshold value< / span >
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< span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "identifier" > property_schema_written< / span > < span class = "plain" > ; < / span > < span class = "comment" > I6 schema for testing written yet?< / span >
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< span class = "identifier" > MEMORY_MANAGEMENT< / span >
< span class = "plain" > } < / span > < span class = "reserved" > measurement_definition< / span > < span class = "plain" > ;< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
< p class = "endnote" > The structure measurement_definition is private to this section.< / p >
< p class = "inwebparagraph" > < a id = "SP5" > < / a > < b > § 5. Measurements. < / b > Here are operators for checking whether we lie inside the domain, where
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the LHS is the value being tested and the RHS is the constant \(t\). In weak
comparison, \(t\) itself is a member; in strict comparison, it isn't.
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< / p >
< pre class = "display" >
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< span class = "reserved" > binary_predicate< / span > < span class = "plain" > *< / span > < span class = "functiontext" > Properties::Measurement::weak_comparison_bp< button class = "popup" onclick = "togglePopup('usagePopup1180')" > ...< span class = "popuptext" id = "usagePopup1180" > Usage of < b > Properties::Measurement::weak_comparison_bp< / b > :< br > < a href = "15-ma.html#SP13" > § 13< / a > < / span > < / button > < / span > < span class = "plain" > (< / span > < span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "identifier" > shape< / span > < span class = "plain" > ) {< / span >
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< span class = "reserved" > binary_predicate< / span > < span class = "plain" > *< / span > < span class = "identifier" > operator< / span > < span class = "plain" > = < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ; < / span > < span class = "comment" > solely to placate gcc< / span >
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< span class = "reserved" > switch< / span > < span class = "plain" > (< / span > < span class = "identifier" > shape< / span > < span class = "plain" > ) {< / span >
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< span class = "reserved" > case< / span > < span class = "plain" > < / span > < span class = "identifier" > MEASURE_T_OR_MORE:< / span > < span class = "plain" > < / span > < span class = "identifier" > operator< / span > < span class = "plain" > = < / span > < span class = "identifier" > R_numerically_greater_than_or_equal_to< / span > < span class = "plain" > ; < / span > < span class = "reserved" > break< / span > < span class = "plain" > ;< / span >
< span class = "reserved" > case< / span > < span class = "plain" > < / span > < span class = "identifier" > MEASURE_T_EXACTLY:< / span > < span class = "plain" > < / span > < span class = "identifier" > operator< / span > < span class = "plain" > = < / span > < span class = "identifier" > R_equality< / span > < span class = "plain" > ; < / span > < span class = "reserved" > break< / span > < span class = "plain" > ;< / span >
< span class = "reserved" > case< / span > < span class = "plain" > < / span > < span class = "identifier" > MEASURE_T_OR_LESS:< / span > < span class = "plain" > < / span > < span class = "identifier" > operator< / span > < span class = "plain" > = < / span > < span class = "identifier" > R_numerically_less_than_or_equal_to< / span > < span class = "plain" > ; < / span > < span class = "reserved" > break< / span > < span class = "plain" > ;< / span >
< span class = "identifier" > default:< / span > < span class = "plain" > < / span > < span class = "identifier" > internal_error< / span > < span class = "plain" > (< / span > < span class = "string" > "unknown region for weak comparison"< / span > < span class = "plain" > );< / span >
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< span class = "plain" > }< / span >
< span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > operator< / span > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
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< span class = "reserved" > char< / span > < span class = "plain" > *< / span > < span class = "functiontext" > Properties::Measurement::strict_comparison< button class = "popup" onclick = "togglePopup('usagePopup1181')" > ...< span class = "popuptext" id = "usagePopup1181" > Usage of < b > Properties::Measurement::strict_comparison< / b > :< br > < a href = "15-ma.html#SP11_4_2" > § 11.4.2< / a > , < a href = "15-ma.html#SP14_1" > § 14.1< / a > , Comparative Relations - < a href = "15-cr.html#SP7_1" > § 7.1< / a > < / span > < / button > < / span > < span class = "plain" > (< / span > < span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "identifier" > shape< / span > < span class = "plain" > ) {< / span >
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< span class = "reserved" > char< / span > < span class = "plain" > *< / span > < span class = "identifier" > operator< / span > < span class = "plain" > = < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ; < / span > < span class = "comment" > solely to placate gcc< / span >
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< span class = "reserved" > switch< / span > < span class = "plain" > (< / span > < span class = "identifier" > shape< / span > < span class = "plain" > ) {< / span >
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< span class = "reserved" > case< / span > < span class = "plain" > < / span > < span class = "identifier" > MEASURE_T_OR_MORE:< / span > < span class = "plain" > < / span > < span class = "identifier" > operator< / span > < span class = "plain" > = < / span > < span class = "string" > "> "< / span > < span class = "plain" > ; < / span > < span class = "reserved" > break< / span > < span class = "plain" > ;< / span >
< span class = "reserved" > case< / span > < span class = "plain" > < / span > < span class = "identifier" > MEASURE_T_OR_LESS:< / span > < span class = "plain" > < / span > < span class = "identifier" > operator< / span > < span class = "plain" > = < / span > < span class = "string" > "< "< / span > < span class = "plain" > ; < / span > < span class = "reserved" > break< / span > < span class = "plain" > ;< / span >
< span class = "identifier" > default:< / span > < span class = "plain" > < / span > < span class = "identifier" > internal_error< / span > < span class = "plain" > (< / span > < span class = "string" > "unknown region for strict comparison"< / span > < span class = "plain" > );< / span >
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< span class = "plain" > }< / span >
< span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > operator< / span > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
< p class = "inwebparagraph" > < a id = "SP6" > < / a > < b > § 6. < / b > < / p >
< pre class = "display" >
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< span class = "reserved" > measurement_definition< / span > < span class = "plain" > *< / span > < span class = "functiontext" > Properties::Measurement::retrieve< button class = "popup" onclick = "togglePopup('usagePopup1182')" > ...< span class = "popuptext" id = "usagePopup1182" > Usage of < b > Properties::Measurement::retrieve< / b > :< br > Deciding to Defer - < a href = "12-dtd.html#SP22" > § 22< / a > < / span > < / button > < / span > < span class = "plain" > (< / span > < span class = "reserved" > property< / span > < span class = "plain" > *< / span > < span class = "identifier" > prn< / span > < span class = "plain" > , < / span > < span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "identifier" > shape< / span > < span class = "plain" > ) {< / span >
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< span class = "reserved" > measurement_definition< / span > < span class = "plain" > *< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > ;< / span >
< span class = "identifier" > LOOP_OVER< / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > , < / span > < span class = "reserved" > measurement_definition< / span > < span class = "plain" > ) {< / span >
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< span class = "functiontext" > < a href = "15-ma.html#SP8" > Properties::Measurement::validate< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > );< / span >
< span class = "reserved" > if< / span > < span class = "plain" > ((< / span > < span class = "functiontext" > < a href = "15-ma.html#SP9" > Properties::Measurement::is_valid< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > )) & & (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > prop< / span > < span class = "plain" > == < / span > < span class = "identifier" > prn< / span > < span class = "plain" > ) & & (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_shape< / span > < span class = "plain" > == < / span > < span class = "identifier" > shape< / span > < span class = "plain" > ))< / span >
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< span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > mdef< / span > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
< span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
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< span class = "reserved" > void< / span > < span class = "plain" > < / span > < span class = "functiontext" > Properties::Measurement::read_property_details< button class = "popup" onclick = "togglePopup('usagePopup1183')" > ...< span class = "popuptext" id = "usagePopup1183" > Usage of < b > Properties::Measurement::read_property_details< / b > :< br > Compile Deferred Propositions - < a href = "12-cdp.html#SP2_1_6_1_14" > § 2.1.6.1.14< / a > < / span > < / button > < / span > < span class = "plain" > (< / span > < span class = "reserved" > measurement_definition< / span > < span class = "plain" > *< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > ,< / span >
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< span class = "reserved" > property< / span > < span class = "plain" > **< / span > < span class = "identifier" > prn< / span > < span class = "plain" > , < / span > < span class = "reserved" > int< / span > < span class = "plain" > *< / span > < span class = "identifier" > shape< / span > < span class = "plain" > ) {< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > prn< / span > < span class = "plain" > ) *< / span > < span class = "identifier" > prn< / span > < span class = "plain" > = < / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > prop< / span > < span class = "plain" > ;< / span >
< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > shape< / span > < span class = "plain" > ) *< / span > < span class = "identifier" > shape< / span > < span class = "plain" > = < / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_shape< / span > < span class = "plain" > ;< / span >
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< span class = "plain" > }< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
< p class = "inwebparagraph" > < a id = "SP7" > < / a > < b > § 7. < / b > Inconveniently, at the time when we create a measurement to test if a subject
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\(S\) satisfies (say) \(P(S) \in \lbrace x\mid x\geq t\rbrace\), we don't yet know
either the property \(P\) or the threshold value \(t\). That means the measurement
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definition structure stands incomplete for a while. Filling it in is called
"validation", as follows.
< / p >
< pre class = "display" >
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< span class = "reserved" > void< / span > < span class = "plain" > < / span > < span class = "functiontext" > Properties::Measurement::validate_definitions< button class = "popup" onclick = "togglePopup('usagePopup1184')" > ...< span class = "popuptext" id = "usagePopup1184" > Usage of < b > Properties::Measurement::validate_definitions< / b > :< br > How To Compile - < a href = "1-htc.html#SP2_6" > § 2.6< / a > < / span > < / button > < / span > < span class = "plain" > (< / span > < span class = "reserved" > void< / span > < span class = "plain" > ) {< / span >
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< span class = "reserved" > measurement_definition< / span > < span class = "plain" > *< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > ;< / span >
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< span class = "identifier" > LOOP_OVER< / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > , < / span > < span class = "reserved" > measurement_definition< / span > < span class = "plain" > ) < / span > < span class = "functiontext" > < a href = "15-ma.html#SP8" > Properties::Measurement::validate< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > );< / span >
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< span class = "plain" > }< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
< p class = "inwebparagraph" > < a id = "SP8" > < / a > < b > § 8. < / b > Where:
< / p >
< pre class = "display" >
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< span class = "reserved" > void< / span > < span class = "plain" > < / span > < span class = "functiontext" > Properties::Measurement::validate< button class = "popup" onclick = "togglePopup('usagePopup1185')" > ...< span class = "popuptext" id = "usagePopup1185" > Usage of < b > Properties::Measurement::validate< / b > :< br > < a href = "15-ma.html#SP6" > § 6< / a > , < a href = "15-ma.html#SP7" > § 7< / a > , < a href = "15-ma.html#SP12" > § 12< / a > , < a href = "15-ma.html#SP14" > § 14< / a > < / span > < / button > < / span > < span class = "plain" > (< / span > < span class = "reserved" > measurement_definition< / span > < span class = "plain" > *< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > ) {< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > ((< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "identifier" > prop< / span > < span class = "plain" > == < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ) & & (< / span > < span class = "identifier" > Wordings::nonempty< / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > name_of_property_to_compare< / span > < span class = "plain" > )))< / span >
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< < span class = "cwebmacro" > Fill in the missing property name, P< / span > < span class = "cwebmacronumber" > 8.1< / span > > < span class = "plain" > ;< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "identifier" > region_threshold_evaluated< / span > < span class = "plain" > == < / span > < span class = "identifier" > FALSE< / span > < span class = "plain" > )< / span >
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< < span class = "cwebmacro" > Fill in the missing threshold value, t< / span > < span class = "cwebmacronumber" > 8.2< / span > > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
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< p class = "inwebparagraph" > < a id = "SP8_1" > < / a > < b > § 8.1. < / b > Here we either make \(P\) valid, or leave it < code class = "display" > < span class = "extract" > NULL< / span > < / code > and issue a problem.
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< / p >
< p class = "macrodefinition" > < code class = "display" >
< < span class = "cwebmacrodefn" > Fill in the missing property name, P< / span > < span class = "cwebmacronumber" > 8.1< / span > > =
< / code > < / p >
< pre class = "displaydefn" >
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< span class = "reserved" > if< / span > < span class = "plain" > (< < / span > < span class = "reserved" > property< / span > < span class = "plain" > -< / span > < span class = "identifier" > name< / span > < span class = "plain" > > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > name_of_property_to_compare< / span > < span class = "plain" > )) < / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > prop< / span > < span class = "plain" > = < < < / span > < span class = "identifier" > rp< / span > < span class = "plain" > > > ;< / span >
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< span class = "reserved" > else< / span > < span class = "plain" > {< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > prop< / span > < span class = "plain" > = < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ;< / span >
< span class = "identifier" > LOG< / span > < span class = "plain" > (< / span > < span class = "string" > "Validating mdef with headword %W... < %W> \n"< / span > < span class = "plain" > ,< / span >
< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > headword< / span > < span class = "plain" > , < / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > name_of_property_to_compare< / span > < span class = "plain" > );< / span >
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< span class = "identifier" > Problems::Issue::definition_problem< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "1-wtc.html#SP5" > Task::syntax_tree< / a > < / span > < span class = "plain" > (), < / span > < span class = "identifier" > _p_< / span > < span class = "plain" > (< / span > < span class = "identifier" > PM_GradingUnknownProperty< / span > < span class = "plain" > ),< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > measurement_node< / span > < span class = "plain" > ,< / span >
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< span class = "string" > "that definition involves an unknown property"< / span > < span class = "plain" > ,< / span >
< span class = "string" > "assuming it was meant to be a definition in the form 'Definition: "< / span >
< span class = "string" > "a container is large if its carrying capacity is 10 or more.'"< / span > < span class = "plain" > );< / span >
< span class = "reserved" > return< / span > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
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< p class = "endnote" > This code is used in < a href = "15-ma.html#SP8" > § 8< / a > .< / p >
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< p class = "inwebparagraph" > < a id = "SP8_2" > < / a > < b > § 8.2. < / b > Here we either make \(t\) valid, or leave < code class = "display" > < span class = "extract" > mdef-> region_threshold_evaluated< / span > < / code > clear
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and issue a problem.
< / p >
< p class = "macrodefinition" > < code class = "display" >
< < span class = "cwebmacrodefn" > Fill in the missing threshold value, t< / span > < span class = "cwebmacronumber" > 8.2< / span > > =
< / code > < / p >
< pre class = "displaydefn" >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_kind< / span > < span class = "plain" > = < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ;< / span >
< span class = "reserved" > if< / span > < span class = "plain" > (< < / span > < span class = "identifier" > s< / span > < span class = "plain" > -< / span > < span class = "identifier" > literal< / span > < span class = "plain" > > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_threshold_text< / span > < span class = "plain" > ))< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_kind< / span > < span class = "plain" > = < / span > < span class = "functiontext" > < a href = "14-rv.html#SP23" > Rvalues::to_kind< / a > < / span > < span class = "plain" > (< < < / span > < span class = "identifier" > rp< / span > < span class = "plain" > > > );< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "identifier" > region_kind< / span > < span class = "plain" > ) {< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_threshold< / span > < span class = "plain" > = < / span > < span class = "functiontext" > < a href = "14-rv.html#SP7" > Rvalues::to_encoded_notation< / a > < / span > < span class = "plain" > (< < < / span > < span class = "identifier" > rp< / span > < span class = "plain" > > > );< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > ((< / span > < span class = "identifier" > Kinds::Behaviour::is_quasinumerical< / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_kind< / span > < span class = "plain" > ) == < / span > < span class = "identifier" > FALSE< / span > < span class = "plain" > ) & & < / span >
< span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_shape< / span > < span class = "plain" > != < / span > < span class = "constant" > MEASURE_T_EXACTLY< / span > < span class = "plain" > )) {< / span >
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< span class = "identifier" > Problems::Issue::definition_problem< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "1-wtc.html#SP5" > Task::syntax_tree< / a > < / span > < span class = "plain" > (), < / span > < span class = "identifier" > _p_< / span > < span class = "plain" > (< / span > < span class = "identifier" > PM_GradingNonarithmeticKOV< / span > < span class = "plain" > ),< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > measurement_node< / span > < span class = "plain" > ,< / span >
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< span class = "string" > "the property value given here has a kind which can't be "< / span >
< span class = "string" > "subject to numerical comparisons"< / span > < span class = "plain" > ,< / span >
< span class = "string" > "so it doesn't make sense to talk about it being 'more' or "< / span >
< span class = "string" > "'less'."< / span > < span class = "plain" > );< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_threshold< / span > < span class = "plain" > = < / span > < span class = "constant" > 0< / span > < span class = "plain" > ;< / span >
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< span class = "reserved" > return< / span > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > Kinds::Compare::compatible< / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_kind< / span > < span class = "plain" > ,< / span >
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< span class = "functiontext" > < a href = "15-vp.html#SP5" > Properties::Valued::kind< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > prop< / span > < span class = "plain" > )) != < / span > < span class = "identifier" > ALWAYS_MATCH< / span > < span class = "plain" > ) {< / span >
< span class = "identifier" > Problems::Issue::definition_problem< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "1-wtc.html#SP5" > Task::syntax_tree< / a > < / span > < span class = "plain" > (), < / span > < span class = "identifier" > _p_< / span > < span class = "plain" > (< / span > < span class = "identifier" > PM_GradingWrongKOV< / span > < span class = "plain" > ),< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > measurement_node< / span > < span class = "plain" > ,< / span >
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< span class = "string" > "the property value given here is the wrong kind"< / span > < span class = "plain" > ,< / span >
< span class = "string" > "and does not match the property being looked at."< / span > < span class = "plain" > );< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_threshold< / span > < span class = "plain" > = < / span > < span class = "constant" > 0< / span > < span class = "plain" > ;< / span >
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< span class = "reserved" > return< / span > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
< span class = "plain" > } < / span > < span class = "reserved" > else< / span > < span class = "plain" > {< / span >
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< span class = "identifier" > LOG< / span > < span class = "plain" > (< / span > < span class = "string" > "Can't get literal from < %W> \n"< / span > < span class = "plain" > , < / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_threshold_text< / span > < span class = "plain" > );< / span >
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< span class = "identifier" > Problems::Issue::definition_problem< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "1-wtc.html#SP5" > Task::syntax_tree< / a > < / span > < span class = "plain" > (), < / span > < span class = "identifier" > _p_< / span > < span class = "plain" > (< / span > < span class = "identifier" > PM_GradingNonLiteral< / span > < span class = "plain" > ),< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > measurement_node< / span > < span class = "plain" > ,< / span >
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< span class = "string" > "that definition is wrongly phrased"< / span > < span class = "plain" > ,< / span >
< span class = "string" > "assuming it was meant to be a grading adjective like 'Definition: a "< / span >
< span class = "string" > "container is large if its carrying capacity is 10 or more.'"< / span > < span class = "plain" > );< / span >
< span class = "reserved" > return< / span > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_threshold_evaluated< / span > < span class = "plain" > = < / span > < span class = "identifier" > TRUE< / span > < span class = "plain" > ;< / span >
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< / pre >
< p class = "inwebparagraph" > < / p >
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< p class = "endnote" > This code is used in < a href = "15-ma.html#SP8" > § 8< / a > .< / p >
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< p class = "inwebparagraph" > < a id = "SP9" > < / a > < b > § 9. < / b > To recover safely from these errors, we would be wise to check:
< / p >
< pre class = "display" >
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< span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "functiontext" > Properties::Measurement::is_valid< button class = "popup" onclick = "togglePopup('usagePopup1186')" > ...< span class = "popuptext" id = "usagePopup1186" > Usage of < b > Properties::Measurement::is_valid< / b > :< br > < a href = "15-ma.html#SP6" > § 6< / a > , < a href = "15-ma.html#SP12" > § 12< / a > , < a href = "15-ma.html#SP14" > § 14< / a > < / span > < / button > < / span > < span class = "plain" > (< / span > < span class = "reserved" > measurement_definition< / span > < span class = "plain" > *< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > ) {< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > ((< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "identifier" > prop< / span > < span class = "plain" > == < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ) || (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_threshold_evaluated< / span > < span class = "plain" > == < / span > < span class = "identifier" > FALSE< / span > < span class = "plain" > )) < / span > < span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > FALSE< / span > < span class = "plain" > ;< / span >
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< span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > TRUE< / span > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
< p class = "inwebparagraph" > < a id = "SP10" > < / a > < b > § 10. Adjectives arising from measurements. < / b > Measurement adjectives are created when we parse a "Definition:" clause for
a new adjective, and then only when the definition has a particular form:
< / p >
< blockquote >
< p > Definition: A container is roomy if its carrying capacity is 10 or more.< / p >
< / blockquote >
< p class = "inwebparagraph" > < measurement-adjective-definition> is used to parse the definition part,
< / p >
< blockquote >
< p > its carrying capacity is 10 or more< / p >
< / blockquote >
< p class = "inwebparagraph" > The following grammar is a little sketchy because it's parsed very early in
Inform's run. Eventually, though, the text after the possessive is required
always to match < property-name> , and the text in the range must match
< s-literal> .
< / p >
< pre class = "display" >
< span class = "plain" > < < / span > < span class = "identifier" > measurement< / span > < span class = "plain" > -< / span > < span class = "identifier" > adjective< / span > < span class = "plain" > -< / span > < span class = "reserved" > definition< / span > < span class = "plain" > > ::=< / span >
< span class = "plain" > < < / span > < span class = "identifier" > possessive< / span > < span class = "plain" > -< / span > < span class = "identifier" > third< / span > < span class = "plain" > -< / span > < span class = "identifier" > person< / span > < span class = "plain" > > ... < / span > < span class = "identifier" > is< / span > < span class = "plain" > /< / span > < span class = "identifier" > are< / span > < span class = "plain" > < / span > < span class = "identifier" > not< / span > < span class = "plain" > ... | ==> < / span > < < span class = "cwebmacro" > Issue PM_GradingMisphrased problem< / span > < span class = "cwebmacronumber" > 10.1< / span > >
< span class = "plain" > < < / span > < span class = "identifier" > possessive< / span > < span class = "plain" > -< / span > < span class = "identifier" > third< / span > < span class = "plain" > -< / span > < span class = "identifier" > person< / span > < span class = "plain" > > {< < / span > < span class = "reserved" > property< / span > < span class = "plain" > -< / span > < span class = "identifier" > name< / span > < span class = "plain" > > } < / span > < span class = "identifier" > is< / span > < span class = "plain" > /< / span > < span class = "identifier" > are< / span > < span class = "plain" > < < / span > < span class = "identifier" > measurement< / span > < span class = "plain" > -< / span > < span class = "identifier" > range< / span > < span class = "plain" > > | ==> < / span > < span class = "identifier" > R< / span > < span class = "plain" > [3]; *< / span > < span class = "identifier" > XP< / span > < span class = "plain" > = < / span > < span class = "identifier" > RP< / span > < span class = "plain" > [2]< / span >
< span class = "plain" > < < / span > < span class = "identifier" > possessive< / span > < span class = "plain" > -< / span > < span class = "identifier" > third< / span > < span class = "plain" > -< / span > < span class = "identifier" > person< / span > < span class = "plain" > > ... < / span > < span class = "identifier" > is< / span > < span class = "plain" > /< / span > < span class = "identifier" > are< / span > < span class = "plain" > < < / span > < span class = "identifier" > measurement< / span > < span class = "plain" > -< / span > < span class = "identifier" > range< / span > < span class = "plain" > > ==> < / span > < span class = "identifier" > R< / span > < span class = "plain" > [2]; *< / span > < span class = "identifier" > XP< / span > < span class = "plain" > = < / span > < span class = "identifier" > NULL< / span >
< span class = "plain" > < < / span > < span class = "identifier" > measurement< / span > < span class = "plain" > -< / span > < span class = "identifier" > range< / span > < span class = "plain" > > ::=< / span >
< span class = "plain" > ... < / span > < span class = "identifier" > or< / span > < span class = "plain" > < / span > < span class = "identifier" > more< / span > < span class = "plain" > | ==> < / span > < span class = "constant" > MEASURE_T_OR_MORE< / span >
< span class = "plain" > ... < / span > < span class = "identifier" > or< / span > < span class = "plain" > < / span > < span class = "identifier" > less< / span > < span class = "plain" > | ==> < / span > < span class = "constant" > MEASURE_T_OR_LESS< / span >
< span class = "plain" > ... ==> < / span > < span class = "constant" > MEASURE_T_EXACTLY< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
< p class = "inwebparagraph" > < a id = "SP10_1" > < / a > < b > § 10.1. < / b > < code class = "display" >
< < span class = "cwebmacrodefn" > Issue PM_GradingMisphrased problem< / span > < span class = "cwebmacronumber" > 10.1< / span > > =
< / code > < / p >
< pre class = "displaydefn" >
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< span class = "identifier" > Problems::Issue::definition_problem< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "1-wtc.html#SP5" > Task::syntax_tree< / a > < / span > < span class = "plain" > (), < / span > < span class = "identifier" > _p_< / span > < span class = "plain" > (< / span > < span class = "identifier" > PM_GradingMisphrased< / span > < span class = "plain" > ),< / span >
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< span class = "identifier" > NounPhrases::new_raw< / span > < span class = "plain" > (< / span > < span class = "identifier" > W< / span > < span class = "plain" > ),< / span >
< span class = "string" > "that definition is wrongly phrased"< / span > < span class = "plain" > ,< / span >
< span class = "string" > "assuming it was meant to be a grading adjective like 'Definition: a "< / span >
< span class = "string" > "container is large if its carrying capacity is 10 or more.'"< / span > < span class = "plain" > );< / span >
< span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > FALSE< / span > < span class = "plain" > ;< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
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< p class = "endnote" > This code is used in < a href = "15-ma.html#SP10" > § 10< / a > .< / p >
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< p class = "inwebparagraph" > < a id = "SP11" > < / a > < b > § 11. < / b > < / p >
< pre class = "display" >
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< span class = "reserved" > adjective_meaning< / span > < span class = "plain" > *< / span > < span class = "functiontext" > Properties::Measurement::ADJ_parse< button class = "popup" onclick = "togglePopup('usagePopup1187')" > ...< span class = "popuptext" id = "usagePopup1187" > Usage of < b > Properties::Measurement::ADJ_parse< / b > :< br > Adjective Meanings - < a href = "4-am.html#SP36" > § 36< / a > < / span > < / button > < / span > < span class = "plain" > (< / span > < span class = "identifier" > parse_node< / span > < span class = "plain" > *< / span > < span class = "identifier" > q< / span > < span class = "plain" > ,< / span >
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< span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "identifier" > sense< / span > < span class = "plain" > , < / span > < span class = "identifier" > wording< / span > < span class = "plain" > < / span > < span class = "identifier" > AW< / span > < span class = "plain" > , < / span > < span class = "identifier" > wording< / span > < span class = "plain" > < / span > < span class = "identifier" > DNW< / span > < span class = "plain" > , < / span > < span class = "identifier" > wording< / span > < span class = "plain" > < / span > < span class = "identifier" > CONW< / span > < span class = "plain" > , < / span > < span class = "identifier" > wording< / span > < span class = "plain" > < / span > < span class = "identifier" > CALLW< / span > < span class = "plain" > ) {< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > sense< / span > < span class = "plain" > == < / span > < span class = "constant" > 0< / span > < span class = "plain" > ) < / span > < span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ;< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > (< < / span > < span class = "identifier" > measurement< / span > < span class = "plain" > -< / span > < span class = "identifier" > adjective< / span > < span class = "plain" > -< / span > < span class = "reserved" > definition< / span > < span class = "plain" > > (< / span > < span class = "identifier" > CONW< / span > < span class = "plain" > ) == < / span > < span class = "identifier" > FALSE< / span > < span class = "plain" > ) < / span > < span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ;< / span >
< span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "identifier" > shape< / span > < span class = "plain" > = < < < / span > < span class = "identifier" > r< / span > < span class = "plain" > > > ;< / span >
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< span class = "identifier" > wording< / span > < span class = "plain" > < / span > < span class = "identifier" > PRW< / span > < span class = "plain" > = < / span > < span class = "identifier" > GET_RW< / span > < span class = "plain" > (< < / span > < span class = "identifier" > measurement< / span > < span class = "plain" > -< / span > < span class = "identifier" > adjective< / span > < span class = "plain" > -< / span > < span class = "reserved" > definition< / span > < span class = "plain" > > , < / span > < span class = "constant" > 1< / span > < span class = "plain" > );< / span >
< span class = "identifier" > wording< / span > < span class = "plain" > < / span > < span class = "identifier" > THRESW< / span > < span class = "plain" > = < / span > < span class = "identifier" > GET_RW< / span > < span class = "plain" > (< < / span > < span class = "identifier" > measurement< / span > < span class = "plain" > -< / span > < span class = "identifier" > range< / span > < span class = "plain" > > , < / span > < span class = "constant" > 1< / span > < span class = "plain" > );< / span >
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< span class = "reserved" > property< / span > < span class = "plain" > *< / span > < span class = "identifier" > prop< / span > < span class = "plain" > = < < < / span > < span class = "identifier" > rp< / span > < span class = "plain" > > > ;< / span >
< < span class = "cwebmacro" > Reject some overly elaborate attempts to define overly elaborate measurements< / span > < span class = "cwebmacronumber" > 11.1< / span > > < span class = "plain" > ;< / span >
< < span class = "cwebmacro" > Allow an exact measurement to be created only if we can already parse the threshold< / span > < span class = "cwebmacronumber" > 11.2< / span > > < span class = "plain" > ;< / span >
< span class = "reserved" > measurement_definition< / span > < span class = "plain" > *< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > = < / span > < span class = "identifier" > CREATE< / span > < span class = "plain" > (< / span > < span class = "reserved" > measurement_definition< / span > < span class = "plain" > );< / span >
< < span class = "cwebmacro" > Initialise the measurement definition< / span > < span class = "cwebmacronumber" > 11.3< / span > > < span class = "plain" > ;< / span >
< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > shape< / span > < span class = "plain" > != < / span > < span class = "constant" > MEASURE_T_EXACTLY< / span > < span class = "plain" > ) < / span > < < span class = "cwebmacro" > Create the superlative form< / span > < span class = "cwebmacronumber" > 11.4< / span > > < span class = "plain" > ;< / span >
< < span class = "cwebmacro" > Create the adjectival meaning arising from this measurement< / span > < span class = "cwebmacronumber" > 11.5< / span > > < span class = "plain" > ;< / span >
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< span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > headword_as_adjective< / span > < span class = "plain" > ;< / span >
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< span class = "plain" > }< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
< p class = "inwebparagraph" > < a id = "SP11_1" > < / a > < b > § 11.1. < / b > < code class = "display" >
< < span class = "cwebmacrodefn" > Reject some overly elaborate attempts to define overly elaborate measurements< / span > < span class = "cwebmacronumber" > 11.1< / span > > =
< / code > < / p >
< pre class = "displaydefn" >
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< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > Wordings::length< / span > < span class = "plain" > (< / span > < span class = "identifier" > AW< / span > < span class = "plain" > ) > < / span > < span class = "constant" > 1< / span > < span class = "plain" > ) {< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > shape< / span > < span class = "plain" > != < / span > < span class = "constant" > MEASURE_T_EXACTLY< / span > < span class = "plain" > )< / span >
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< span class = "identifier" > Problems::Issue::definition_problem< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "1-wtc.html#SP5" > Task::syntax_tree< / a > < / span > < span class = "plain" > (), < / span > < span class = "identifier" > _p_< / span > < span class = "plain" > (< / span > < span class = "identifier" > PM_MultiwordGrading< / span > < span class = "plain" > ),< / span >
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< span class = "identifier" > q< / span > < span class = "plain" > , < / span > < span class = "string" > "a grading adjective must be a single word"< / span > < span class = "plain" > ,< / span >
< span class = "string" > "as in 'Definition: a container is large if its carrying capacity is "< / span >
< span class = "string" > "10 or more.': 'fairly large' would not be allowed because it would "< / span >
< span class = "string" > "make no sense to talk about 'fairly larger' or 'fairly largest'."< / span > < span class = "plain" > );< / span >
< span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > Wordings::nonempty< / span > < span class = "plain" > (< / span > < span class = "identifier" > CALLW< / span > < span class = "plain" > )) {< / span >
< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > shape< / span > < span class = "plain" > != < / span > < span class = "constant" > MEASURE_T_EXACTLY< / span > < span class = "plain" > )< / span >
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< span class = "identifier" > Problems::Issue::definition_problem< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "1-wtc.html#SP5" > Task::syntax_tree< / a > < / span > < span class = "plain" > (), < / span > < span class = "identifier" > _p_< / span > < span class = "plain" > (< / span > < span class = "identifier" > PM_GradingCalled< / span > < span class = "plain" > ),< / span >
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< span class = "identifier" > q< / span > < span class = "plain" > , < / span > < span class = "string" > "callings are not allowed when defining grading adjectives"< / span > < span class = "plain" > ,< / span >
< span class = "string" > "so 'Definition: a container is large if its carrying capacity is 10 "< / span >
< span class = "string" > "or more.' is fine, but so 'Definition: a container (called the bag) "< / span >
< span class = "string" > "is large if its carrying capacity is 10 or more.' is not - then again, "< / span >
< span class = "string" > "there's very little call for it."< / span > < span class = "plain" > );< / span >
< span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > sense< / span > < span class = "plain" > != < / span > < span class = "constant" > 1< / span > < span class = "plain" > ) {< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > shape< / span > < span class = "plain" > != < / span > < span class = "constant" > MEASURE_T_EXACTLY< / span > < span class = "plain" > )< / span >
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< span class = "identifier" > Problems::Issue::definition_problem< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "1-wtc.html#SP5" > Task::syntax_tree< / a > < / span > < span class = "plain" > (), < / span > < span class = "identifier" > _p_< / span > < span class = "plain" > (< / span > < span class = "identifier" > PM_GradingUnless< / span > < span class = "plain" > ),< / span >
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< span class = "identifier" > q< / span > < span class = "plain" > , < / span > < span class = "string" > "'unless' is not allowed when defining grading adjectives"< / span > < span class = "plain" > ,< / span >
< span class = "string" > "so 'Definition: a container is large if its carrying capacity is 10 "< / span >
< span class = "string" > "or more.' is fine, but so 'Definition: a container is modest unless "< / span >
< span class = "string" > "its carrying capacity is 10 or more.' is not - of course a similar "< / span >
< span class = "string" > "effect could be achieved by 'Definition: a container is modest if its "< / span >
< span class = "string" > "carrying capacity is 9 or less.'"< / span > < span class = "plain" > );< / span >
< span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
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< p class = "endnote" > This code is used in < a href = "15-ma.html#SP11" > § 11< / a > .< / p >
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< p class = "inwebparagraph" > < a id = "SP11_2" > < / a > < b > § 11.2. < / b > Perhaps this is a good point to say why we allow any exact measurements at
all. After all, if we didn't, a definition like:
< / p >
< blockquote >
< p > Definition: a person is handy if his carrying capacity is 7.< / p >
< / blockquote >
< p class = "inwebparagraph" > ...would still work; and "handy" would then be created as a < code class = "display" > < span class = "extract" > CONDITION_KADJ< / span > < / code >
adjective. So why not let that happen?
< / p >
< p class = "inwebparagraph" > The answer is that our < code class = "display" > < span class = "extract" > MEASUREMENT_KADJ< / span > < / code > adjectives behave exactly the same
at run-time, but can also be asserted true in the model world at compile-time.
In particular, we could write:
< / p >
< blockquote >
< p > Peter is a handy person.< / p >
< / blockquote >
< p class = "inwebparagraph" > This can't be done with general < code class = "display" > < span class = "extract" > CONDITION_KADJ< / span > < / code > adjectives, because conditions
can't normally be unravelled at compile time.
< / p >
< p class = "macrodefinition" > < code class = "display" >
< < span class = "cwebmacrodefn" > Allow an exact measurement to be created only if we can already parse the threshold< / span > < span class = "cwebmacronumber" > 11.2< / span > > =
< / code > < / p >
< pre class = "displaydefn" >
< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > shape< / span > < span class = "plain" > == < / span > < span class = "constant" > MEASURE_T_EXACTLY< / span > < span class = "plain" > ) {< / span >
< span class = "reserved" > if< / span > < span class = "plain" > (< < / span > < span class = "identifier" > s< / span > < span class = "plain" > -< / span > < span class = "identifier" > literal< / span > < span class = "plain" > > (< / span > < span class = "identifier" > THRESW< / span > < span class = "plain" > ) == < / span > < span class = "identifier" > FALSE< / span > < span class = "plain" > ) < / span > < span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
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< p class = "endnote" > This code is used in < a href = "15-ma.html#SP11" > § 11< / a > .< / p >
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< p class = "inwebparagraph" > < a id = "SP11_3" > < / a > < b > § 11.3. < / b > < code class = "display" >
< < span class = "cwebmacrodefn" > Initialise the measurement definition< / span > < span class = "cwebmacronumber" > 11.3< / span > > =
< / code > < / p >
< pre class = "displaydefn" >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > measurement_node< / span > < span class = "plain" > = < / span > < span class = "identifier" > q< / span > < span class = "plain" > ;< / span >
< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > headword< / span > < span class = "plain" > = < / span > < span class = "identifier" > Wordings::first_word< / span > < span class = "plain" > (< / span > < span class = "identifier" > AW< / span > < span class = "plain" > );< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_threshold< / span > < span class = "plain" > = < / span > < span class = "constant" > 0< / span > < span class = "plain" > ;< / span >
< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_threshold_text< / span > < span class = "plain" > = < / span > < span class = "identifier" > THRESW< / span > < span class = "plain" > ;< / span >
< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_threshold_evaluated< / span > < span class = "plain" > = < / span > < span class = "identifier" > FALSE< / span > < span class = "plain" > ;< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > prop< / span > < span class = "plain" > = < / span > < span class = "identifier" > prop< / span > < span class = "plain" > ;< / span >
< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > property_schema_written< / span > < span class = "plain" > = < / span > < span class = "identifier" > FALSE< / span > < span class = "plain" > ;< / span >
< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_shape< / span > < span class = "plain" > = < / span > < span class = "identifier" > shape< / span > < span class = "plain" > ;< / span >
< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > name_of_property_to_compare< / span > < span class = "plain" > = < / span > < span class = "identifier" > PRW< / span > < span class = "plain" > ;< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > superlative< / span > < span class = "plain" > = < / span > < span class = "identifier" > EMPTY_WORDING< / span > < span class = "plain" > ; < / span > < span class = "comment" > but it may be set below< / span >
< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > headword_as_adjective< / span > < span class = "plain" > = < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ; < / span > < span class = "comment" > but it will certainly be set below< / span >
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< span class = "identifier" > package_request< / span > < span class = "plain" > *< / span > < span class = "identifier" > P< / span > < span class = "plain" > = < / span > < span class = "functiontext" > < a href = "27-hr.html#SP4" > Hierarchy::package< / a > < / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "27-cm.html#SP6" > Modules::current< / a > < / span > < span class = "plain" > (), < / span > < span class = "constant" > ADJECTIVE_MEANINGS_HAP< / span > < span class = "plain" > );< / span >
< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > mdef_iname< / span > < span class = "plain" > = < / span > < span class = "functiontext" > < a href = "27-hr.html#SP4" > Hierarchy::make_iname_in< / a > < / span > < span class = "plain" > (< / span > < span class = "constant" > MEASUREMENT_FN_HL< / span > < span class = "plain" > , < / span > < span class = "identifier" > P< / span > < span class = "plain" > );< / span >
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< / pre >
< p class = "inwebparagraph" > < / p >
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< p class = "endnote" > This code is used in < a href = "15-ma.html#SP11" > § 11< / a > .< / p >
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< p class = "inwebparagraph" > < a id = "SP11_4" > < / a > < b > § 11.4. < / b > < code class = "display" >
< < span class = "cwebmacrodefn" > Create the superlative form< / span > < span class = "cwebmacronumber" > 11.4< / span > > =
< / code > < / p >
< pre class = "displaydefn" >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > superlative< / span > < span class = "plain" > = < / span > < span class = "identifier" > Grading::make_superlative< / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > headword< / span > < span class = "plain" > , < / span > < span class = "identifier" > language_of_source_text< / span > < span class = "plain" > );< / span >
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< < span class = "cwebmacro" > Feed the preamble for the superlative phrase into the lexer< / span > < span class = "cwebmacronumber" > 11.4.1< / span > > < span class = "plain" > ;< / span >
< < span class = "cwebmacro" > Feed the body of the superlative phrase into the lexer< / span > < span class = "cwebmacronumber" > 11.4.2< / span > > < span class = "plain" > ;< / span >
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< span class = "functiontext" > < a href = "7-rs.html#SP3" > Sentences::RuleSubtrees::register_recently_lexed_phrases< / a > < / span > < span class = "plain" > ();< / span >
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< / pre >
< p class = "inwebparagraph" > < / p >
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< p class = "endnote" > This code is used in < a href = "15-ma.html#SP11" > § 11< / a > .< / p >
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< p class = "inwebparagraph" > < a id = "SP11_4_1" > < / a > < b > § 11.4.1. < / b > < code class = "display" >
< < span class = "cwebmacrodefn" > Feed the preamble for the superlative phrase into the lexer< / span > < span class = "cwebmacronumber" > 11.4.1< / span > > =
< / code > < / p >
< pre class = "displaydefn" >
< span class = "identifier" > TEMPORARY_TEXT< / span > < span class = "plain" > (< / span > < span class = "identifier" > TEMP< / span > < span class = "plain" > );< / span >
< span class = "identifier" > WRITE_TO< / span > < span class = "plain" > (< / span > < span class = "identifier" > TEMP< / span > < span class = "plain" > , < / span > < span class = "string" > " To decide which object is %N ( S - description of objects ) "< / span > < span class = "plain" > ,< / span >
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< span class = "identifier" > Wordings::first_wn< / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > superlative< / span > < span class = "plain" > ));< / span >
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< span class = "identifier" > Sentences::make_node< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "1-wtc.html#SP5" > Task::syntax_tree< / a > < / span > < span class = "plain" > (),< / span >
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< span class = "identifier" > Feeds::feed_stream< / span > < span class = "plain" > (< / span > < span class = "identifier" > TEMP< / span > < span class = "plain" > ),< / span >
< span class = "character" > ':'< / span > < span class = "plain" > );< / span >
< span class = "identifier" > DISCARD_TEXT< / span > < span class = "plain" > (< / span > < span class = "identifier" > TEMP< / span > < span class = "plain" > );< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
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< p class = "endnote" > This code is used in < a href = "15-ma.html#SP11_4" > § 11.4< / a > .< / p >
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< p class = "inwebparagraph" > < a id = "SP11_4_2" > < / a > < b > § 11.4.2. < / b > < code class = "display" >
< < span class = "cwebmacrodefn" > Feed the body of the superlative phrase into the lexer< / span > < span class = "cwebmacronumber" > 11.4.2< / span > > =
< / code > < / p >
< pre class = "displaydefn" >
< span class = "identifier" > TEMPORARY_TEXT< / span > < span class = "plain" > (< / span > < span class = "identifier" > TEMP< / span > < span class = "plain" > );< / span >
< span class = "identifier" > WRITE_TO< / span > < span class = "plain" > (< / span > < span class = "identifier" > TEMP< / span > < span class = "plain" > , < / span > < span class = "string" > " (- {-primitive-definition:extremal%s%W} -) "< / span > < span class = "plain" > ,< / span >
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< span class = "functiontext" > < a href = "15-ma.html#SP5" > Properties::Measurement::strict_comparison< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_shape< / span > < span class = "plain" > ),< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > name_of_property_to_compare< / span > < span class = "plain" > );< / span >
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< span class = "identifier" > Sentences::make_node< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "1-wtc.html#SP5" > Task::syntax_tree< / a > < / span > < span class = "plain" > (), < / span > < span class = "identifier" > Feeds::feed_stream< / span > < span class = "plain" > (< / span > < span class = "identifier" > TEMP< / span > < span class = "plain" > ), < / span > < span class = "character" > '.'< / span > < span class = "plain" > );< / span >
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< span class = "identifier" > DISCARD_TEXT< / span > < span class = "plain" > (< / span > < span class = "identifier" > TEMP< / span > < span class = "plain" > );< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
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< p class = "endnote" > This code is used in < a href = "15-ma.html#SP11_4" > § 11.4< / a > .< / p >
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< p class = "inwebparagraph" > < a id = "SP11_5" > < / a > < b > § 11.5. < / b > < code class = "display" >
< < span class = "cwebmacrodefn" > Create the adjectival meaning arising from this measurement< / span > < span class = "cwebmacronumber" > 11.5< / span > > =
< / code > < / p >
< pre class = "displaydefn" >
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< span class = "reserved" > adjective_meaning< / span > < span class = "plain" > *< / span > < span class = "identifier" > am< / span > < span class = "plain" > = < / span > < span class = "functiontext" > < a href = "4-am.html#SP16" > Adjectives::Meanings::new< / a > < / span > < span class = "plain" > (< / span > < span class = "constant" > MEASUREMENT_KADJ< / span > < span class = "plain" > ,< / span >
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< span class = "identifier" > STORE_POINTER_measurement_definition< / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > ), < / span > < span class = "identifier" > ParseTree::get_text< / span > < span class = "plain" > (< / span > < span class = "identifier" > q< / span > < span class = "plain" > ));< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > headword_as_adjective< / span > < span class = "plain" > = < / span > < span class = "identifier" > am< / span > < span class = "plain" > ;< / span >
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< span class = "functiontext" > < a href = "4-am.html#SP7" > Adjectives::Meanings::declare< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > am< / span > < span class = "plain" > , < / span > < span class = "identifier" > AW< / span > < span class = "plain" > , < / span > < span class = "constant" > 3< / span > < span class = "plain" > );< / span >
< span class = "functiontext" > < a href = "4-am.html#SP30" > Adjectives::Meanings::pass_task_to_support_routine< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > am< / span > < span class = "plain" > , < / span > < span class = "constant" > TEST_ADJECTIVE_TASK< / span > < span class = "plain" > );< / span >
< span class = "functiontext" > < a href = "4-am.html#SP21" > Adjectives::Meanings::set_domain_text< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > am< / span > < span class = "plain" > , < / span > < span class = "identifier" > DNW< / span > < span class = "plain" > );< / span >
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< / pre >
< p class = "inwebparagraph" > < / p >
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< p class = "endnote" > This code is used in < a href = "15-ma.html#SP11" > § 11< / a > .< / p >
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< p class = "inwebparagraph" > < a id = "SP12" > < / a > < b > § 12. < / b > < / p >
< pre class = "display" >
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< span class = "reserved" > void< / span > < span class = "plain" > < / span > < span class = "functiontext" > Properties::Measurement::ADJ_compiling_soon< button class = "popup" onclick = "togglePopup('usagePopup1188')" > ...< span class = "popuptext" id = "usagePopup1188" > Usage of < b > Properties::Measurement::ADJ_compiling_soon< / b > :< br > Adjective Meanings - < a href = "4-am.html#SP37" > § 37< / a > < / span > < / button > < / span > < span class = "plain" > (< / span > < span class = "reserved" > adjective_meaning< / span > < span class = "plain" > *< / span > < span class = "identifier" > am< / span > < span class = "plain" > ,< / span >
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< span class = "reserved" > measurement_definition< / span > < span class = "plain" > *< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > , < / span > < span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "identifier" > T< / span > < span class = "plain" > ) {< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > ((< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "identifier" > prop< / span > < span class = "plain" > ) & & (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_threshold_evaluated< / span > < span class = "plain" > ) & & < / span >
< span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > property_schema_written< / span > < span class = "plain" > == < / span > < span class = "identifier" > FALSE< / span > < span class = "plain" > )) {< / span >
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< span class = "reserved" > i6_schema< / span > < span class = "plain" > *< / span > < span class = "identifier" > sch< / span > < span class = "plain" > = < / span > < span class = "functiontext" > < a href = "4-am.html#SP27" > Adjectives::Meanings::set_i6_schema< / a > < / span > < span class = "plain" > (< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > headword_as_adjective< / span > < span class = "plain" > , < / span > < span class = "constant" > TEST_ADJECTIVE_TASK< / span > < span class = "plain" > , < / span > < span class = "identifier" > FALSE< / span > < span class = "plain" > );< / span >
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< span class = "functiontext" > < a href = "12-is.html#SP4_1" > Calculus::Schemas::modify< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > sch< / span > < span class = "plain" > , < / span > < span class = "string" > "%n(*1)"< / span > < span class = "plain" > , < / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > mdef_iname< / span > < span class = "plain" > );< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > property_schema_written< / span > < span class = "plain" > = < / span > < span class = "identifier" > TRUE< / span > < span class = "plain" > ;< / span >
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< span class = "plain" > }< / span >
< span class = "plain" > }< / span >
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< span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "functiontext" > Properties::Measurement::ADJ_compile< button class = "popup" onclick = "togglePopup('usagePopup1189')" > ...< span class = "popuptext" id = "usagePopup1189" > Usage of < b > Properties::Measurement::ADJ_compile< / b > :< br > Adjective Meanings - < a href = "4-am.html#SP38" > § 38< / a > < / span > < / button > < / span > < span class = "plain" > (< / span > < span class = "reserved" > measurement_definition< / span > < span class = "plain" > *< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > ,< / span >
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< span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "identifier" > T< / span > < span class = "plain" > , < / span > < span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "identifier" > emit_flag< / span > < span class = "plain" > , < / span > < span class = "reserved" > ph_stack_frame< / span > < span class = "plain" > *< / span > < span class = "identifier" > phsf< / 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 >
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< span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "functiontext" > Properties::Measurement::ADJ_assert< button class = "popup" onclick = "togglePopup('usagePopup1190')" > ...< span class = "popuptext" id = "usagePopup1190" > Usage of < b > Properties::Measurement::ADJ_assert< / b > :< br > Adjective Meanings - < a href = "4-am.html#SP39" > § 39< / a > < / span > < / button > < / span > < span class = "plain" > (< / span > < span class = "reserved" > measurement_definition< / span > < span class = "plain" > *< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > ,< / span >
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< span class = "reserved" > inference_subject< / span > < span class = "plain" > *< / span > < span class = "identifier" > infs_to_assert_on< / span > < span class = "plain" > , < / span > < span class = "identifier" > parse_node< / span > < span class = "plain" > *< / span > < span class = "identifier" > val_to_assert_on< / span > < span class = "plain" > , < / span > < span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "identifier" > parity< / span > < span class = "plain" > ) {< / span >
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< span class = "functiontext" > < a href = "15-ma.html#SP8" > Properties::Measurement::validate< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > );< / span >
< span class = "reserved" > if< / span > < span class = "plain" > ((< / span > < span class = "functiontext" > < a href = "15-ma.html#SP9" > Properties::Measurement::is_valid< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > )) & & (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > prop< / span > < span class = "plain" > ) & & (< / span > < span class = "identifier" > parity< / span > < span class = "plain" > == < / span > < span class = "identifier" > TRUE< / span > < span class = "plain" > )) {< / span >
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< span class = "identifier" > parse_node< / span > < span class = "plain" > *< / span > < span class = "identifier" > val< / span > < span class = "plain" > = < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ;< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > (< < / span > < span class = "identifier" > s< / span > < span class = "plain" > -< / span > < span class = "identifier" > literal< / span > < span class = "plain" > > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_threshold_text< / span > < span class = "plain" > )) < / span > < span class = "identifier" > val< / span > < span class = "plain" > = < < < / span > < span class = "identifier" > rp< / span > < span class = "plain" > > > ;< / span >
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< span class = "reserved" > else< / span > < span class = "plain" > < / span > < span class = "identifier" > internal_error< / span > < span class = "plain" > (< / span > < span class = "string" > "literal unreadable"< / span > < span class = "plain" > );< / span >
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< span class = "functiontext" > < a href = "16-in.html#SP9" > World::Inferences::draw_property< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > infs_to_assert_on< / span > < span class = "plain" > , < / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > prop< / span > < span class = "plain" > , < / span > < span class = "identifier" > val< / span > < span class = "plain" > );< / span >
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< span class = "reserved" > return< / span > < span class = "plain" > < / span > < span class = "identifier" > TRUE< / 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 >
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< span class = "reserved" > int< / span > < span class = "plain" > < / span > < span class = "functiontext" > Properties::Measurement::ADJ_index< button class = "popup" onclick = "togglePopup('usagePopup1191')" > ...< span class = "popuptext" id = "usagePopup1191" > Usage of < b > Properties::Measurement::ADJ_index< / b > :< br > Adjective Meanings - < a href = "4-am.html#SP40" > § 40< / a > < / span > < / button > < / span > < span class = "plain" > (< / span > < span class = "identifier" > OUTPUT_STREAM< / span > < span class = "plain" > , < / span > < span class = "reserved" > measurement_definition< / span > < span class = "plain" > *< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > ) {< / span >
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< 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 = "inwebparagraph" > < a id = "SP13" > < / a > < b > § 13. Support routines for measurement. < / b > < / p >
< pre class = "display" >
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< span class = "reserved" > void< / span > < span class = "plain" > < / span > < span class = "functiontext" > Properties::Measurement::compile_MADJ_routines< button class = "popup" onclick = "togglePopup('usagePopup1192')" > ...< span class = "popuptext" id = "usagePopup1192" > Usage of < b > Properties::Measurement::compile_MADJ_routines< / b > :< br > How To Compile - < a href = "1-htc.html#SP2_8" > § 2.8< / a > < / span > < / button > < / span > < span class = "plain" > (< / span > < span class = "reserved" > void< / span > < span class = "plain" > ) {< / span >
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< span class = "reserved" > measurement_definition< / span > < span class = "plain" > *< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > ;< / span >
< span class = "identifier" > LOOP_OVER< / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > , < / span > < span class = "reserved" > measurement_definition< / span > < span class = "plain" > )< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "identifier" > property_schema_written< / span > < span class = "plain" > ) {< / span >
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< span class = "identifier" > packaging_state< / span > < span class = "plain" > < / span > < span class = "identifier" > save< / span > < span class = "plain" > = < / span > < span class = "functiontext" > < a href = "26-rt.html#SP1" > Routines::begin< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > mdef_iname< / span > < span class = "plain" > );< / span >
< span class = "reserved" > local_variable< / span > < span class = "plain" > *< / span > < span class = "identifier" > lv< / span > < span class = "plain" > = < / span > < span class = "functiontext" > < a href = "24-lv.html#SP8" > LocalVariables::add_call_parameter< / a > < / span > < span class = "plain" > (< / span >
< span class = "functiontext" > < a href = "24-sf.html#SP8" > Frames::current_stack_frame< / a > < / span > < span class = "plain" > (),< / span >
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< span class = "identifier" > EMPTY_WORDING< / span > < span class = "plain" > ,< / span >
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< span class = "functiontext" > < a href = "4-am.html#SP23" > Adjectives::Meanings::get_domain< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > headword_as_adjective< / span > < span class = "plain" > ));< / span >
< span class = "identifier" > parse_node< / span > < span class = "plain" > *< / span > < span class = "identifier" > var< / span > < span class = "plain" > = < / span > < span class = "functiontext" > < a href = "14-lv.html#SP2" > Lvalues::new_LOCAL_VARIABLE< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > EMPTY_WORDING< / span > < span class = "plain" > , < / span > < span class = "identifier" > lv< / span > < span class = "plain" > );< / span >
< span class = "identifier" > parse_node< / span > < span class = "plain" > *< / span > < span class = "identifier" > evaluated_prop< / span > < span class = "plain" > = < / span > < span class = "functiontext" > < a href = "14-lv.html#SP5" > Lvalues::new_PROPERTY_VALUE< / a > < / span > < span class = "plain" > (< / span >
< span class = "functiontext" > < a href = "14-rv.html#SP1" > Rvalues::from_property< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > prop< / span > < span class = "plain" > ), < / span > < span class = "identifier" > var< / span > < span class = "plain" > );< / span >
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< span class = "identifier" > parse_node< / span > < span class = "plain" > *< / span > < span class = "identifier" > val< / span > < span class = "plain" > = < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ;< / span >
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< span class = "reserved" > if< / span > < span class = "plain" > (< < / span > < span class = "identifier" > s< / span > < span class = "plain" > -< / span > < span class = "identifier" > literal< / span > < span class = "plain" > > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_threshold_text< / span > < span class = "plain" > )) < / span > < span class = "identifier" > val< / span > < span class = "plain" > = < < < / span > < span class = "identifier" > rp< / span > < span class = "plain" > > > ;< / span >
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< span class = "reserved" > else< / span > < span class = "plain" > < / span > < span class = "identifier" > internal_error< / span > < span class = "plain" > (< / span > < span class = "string" > "literal unreadable"< / span > < span class = "plain" > );< / span >
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< span class = "reserved" > pcalc_prop< / span > < span class = "plain" > *< / span > < span class = "identifier" > prop< / span > < span class = "plain" > = < / span > < span class = "functiontext" > < a href = "11-ap.html#SP21" > Calculus::Atoms::binary_PREDICATE_new< / a > < / span > < span class = "plain" > (< / span >
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< span class = "functiontext" > < a href = "15-ma.html#SP5" > Properties::Measurement::weak_comparison_bp< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_shape< / span > < span class = "plain" > ),< / span >
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< span class = "functiontext" > < a href = "11-tr.html#SP4" > Calculus::Terms::new_constant< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > evaluated_prop< / span > < span class = "plain" > ),< / span >
< span class = "functiontext" > < a href = "11-tr.html#SP4" > Calculus::Terms::new_constant< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > val< / span > < span class = "plain" > ));< / span >
< span class = "reserved" > if< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "11-tcp.html#SP6" > Calculus::Propositions::Checker::type_check< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > prop< / span > < span class = "plain" > ,< / span >
< span class = "functiontext" > < a href = "11-tcp.html#SP4" > Calculus::Propositions::Checker::tc_problem_reporting< / a > < / span > < span class = "plain" > (< / span >
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< span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_threshold_text< / span > < span class = "plain" > ,< / span >
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< span class = "string" > "be giving the boundary of the definition"< / span > < span class = "plain" > )) == < / span > < span class = "identifier" > ALWAYS_MATCH< / span > < span class = "plain" > ) {< / span >
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< span class = "identifier" > Produce::inv_primitive< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "27-em.html#SP2" > Emit::tree< / a > < / span > < span class = "plain" > (), < / span > < span class = "identifier" > IF_BIP< / span > < span class = "plain" > );< / span >
< span class = "identifier" > Produce::down< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "27-em.html#SP2" > Emit::tree< / a > < / span > < span class = "plain" > ());< / span >
< span class = "functiontext" > < a href = "12-dtd.html#SP7" > Calculus::Deferrals::emit_test_of_proposition< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > NULL< / span > < span class = "plain" > , < / span > < span class = "identifier" > prop< / span > < span class = "plain" > );< / span >
< span class = "identifier" > Produce::code< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "27-em.html#SP2" > Emit::tree< / a > < / span > < span class = "plain" > ());< / span >
< span class = "identifier" > Produce::down< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "27-em.html#SP2" > Emit::tree< / a > < / span > < span class = "plain" > ());< / span >
< span class = "identifier" > Produce::rtrue< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "27-em.html#SP2" > Emit::tree< / a > < / span > < span class = "plain" > ());< / span >
< span class = "identifier" > Produce::up< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "27-em.html#SP2" > Emit::tree< / a > < / span > < span class = "plain" > ());< / span >
< span class = "identifier" > Produce::up< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "27-em.html#SP2" > Emit::tree< / a > < / span > < span class = "plain" > ());< / span >
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< span class = "plain" > }< / span >
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< span class = "identifier" > Produce::rfalse< / span > < span class = "plain" > (< / span > < span class = "functiontext" > < a href = "27-em.html#SP2" > Emit::tree< / a > < / span > < span class = "plain" > ());< / span >
< span class = "functiontext" > < a href = "26-rt.html#SP4" > Routines::end< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > save< / span > < span class = "plain" > );< / span >
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< span class = "plain" > }< / span >
< span class = "plain" > }< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
< p class = "inwebparagraph" > < a id = "SP14" > < / a > < b > § 14. Comparative forms. < / b > For timing reasons, these are made all at once, and later than when the headword
adjectives and superlatives are made.
< / p >
< pre class = "display" >
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< span class = "reserved" > void< / span > < span class = "plain" > < / span > < span class = "functiontext" > Properties::Measurement::create_comparatives< button class = "popup" onclick = "togglePopup('usagePopup1193')" > ...< span class = "popuptext" id = "usagePopup1193" > Usage of < b > Properties::Measurement::create_comparatives< / b > :< br > Comparative Relations - < a href = "15-cr.html#SP4" > § 4< / a > < / span > < / button > < / span > < span class = "plain" > (< / span > < span class = "reserved" > void< / span > < span class = "plain" > ) {< / span >
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< span class = "reserved" > measurement_definition< / span > < span class = "plain" > *< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > ;< / span >
< span class = "identifier" > LOOP_OVER< / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > , < / span > < span class = "reserved" > measurement_definition< / span > < span class = "plain" > ) {< / span >
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< span class = "functiontext" > < a href = "15-ma.html#SP8" > Properties::Measurement::validate< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > );< / span >
< span class = "reserved" > if< / span > < span class = "plain" > ((< / span > < span class = "functiontext" > < a href = "15-ma.html#SP9" > Properties::Measurement::is_valid< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > )) & & (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_shape< / span > < span class = "plain" > != < / span > < span class = "constant" > MEASURE_T_EXACTLY< / span > < span class = "plain" > )) {< / span >
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< span class = "identifier" > wording< / span > < span class = "plain" > < / span > < span class = "identifier" > H< / span > < span class = "plain" > = < / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > headword< / span > < span class = "plain" > ; < / span > < span class = "comment" > word number of, e.g., "tall"< / span >
< span class = "identifier" > wording< / span > < span class = "plain" > < / span > < span class = "identifier" > comparative_form< / span > < span class = "plain" > = < / span > < span class = "identifier" > Grading::make_comparative< / span > < span class = "plain" > (< / span > < span class = "identifier" > H< / span > < span class = "plain" > , < / span > < span class = "identifier" > language_of_source_text< / span > < span class = "plain" > ); < / span > < span class = "comment" > "taller than"< / span >
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< span class = "identifier" > vocabulary_entry< / span > < span class = "plain" > *< / span > < span class = "identifier" > quiddity< / span > < span class = "plain" > =< / span >
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< span class = "identifier" > Lexer::word< / span > < span class = "plain" > (< / span > < span class = "identifier" > Wordings::first_wn< / span > < span class = "plain" > (< / span > < span class = "identifier" > Grading::make_quiddity< / span > < span class = "plain" > (< / span > < span class = "identifier" > H< / span > < span class = "plain" > , < / span > < span class = "identifier" > language_of_source_text< / span > < span class = "plain" > ))); < / span > < span class = "comment" > "tallness"< / span >
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< span class = "reserved" > i6_schema< / span > < span class = "plain" > *< / span > < span class = "identifier" > schema_to_compare_property_values< / span > < span class = "plain" > ;< / span >
< < span class = "cwebmacro" > Work out property comparison schema< / span > < span class = "cwebmacronumber" > 14.1< / span > > < span class = "plain" > ;< / span >
< < span class = "cwebmacro" > Construct a BP named for the quiddity and tested using the comparative schema< / span > < span class = "cwebmacronumber" > 14.2< / span > > < span class = "plain" > ;< / span >
< span class = "plain" > }< / span >
< span class = "plain" > }< / span >
< span class = "plain" > }< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
< p class = "inwebparagraph" > < a id = "SP14_1" > < / a > < b > § 14.1. < / b > This schema compares the property values:
< / p >
< p class = "macrodefinition" > < code class = "display" >
< < span class = "cwebmacrodefn" > Work out property comparison schema< / span > < span class = "cwebmacronumber" > 14.1< / span > > =
< / code > < / p >
< pre class = "displaydefn" >
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< span class = "identifier" > inter_name< / span > < span class = "plain" > *< / span > < span class = "identifier" > identifier< / span > < span class = "plain" > = < / span > < span class = "functiontext" > < a href = "15-pr.html#SP27" > Properties::iname< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > prop< / span > < span class = "plain" > );< / span >
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< span class = "reserved" > char< / span > < span class = "plain" > *< / span > < span class = "identifier" > operation< / span > < span class = "plain" > = < / span > < span class = "functiontext" > < a href = "15-ma.html#SP5" > Properties::Measurement::strict_comparison< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_shape< / span > < span class = "plain" > );< / span >
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< span class = "identifier" > schema_to_compare_property_values< / span > < span class = "plain" > =< / span >
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< span class = "functiontext" > < a href = "12-is.html#SP4" > Calculus::Schemas::new< / a > < / span > < span class = "plain" > (< / span > < span class = "string" > "(*1.%n %s *2.%n)"< / span > < span class = "plain" > , < / span > < span class = "identifier" > identifier< / span > < span class = "plain" > , < / span > < span class = "identifier" > operation< / span > < span class = "plain" > , < / span > < span class = "identifier" > identifier< / span > < span class = "plain" > );< / span >
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< / pre >
< p class = "inwebparagraph" > < / p >
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< p class = "endnote" > This code is used in < a href = "15-ma.html#SP14" > § 14< / a > .< / p >
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< p class = "inwebparagraph" > < a id = "SP14_2" > < / a > < b > § 14.2. < / b > The relation arising from "tall" would be called the "tallness relation", for
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instance. Note that we don't say anything about the domain of \(x\) and \(y\)
in \(T(x, y)\). That's because we a value property like "height" may exist
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for more than one kind of object, and there is not necessarily any unifying
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kind of value \(K\) such all objects satisfying \(K\) possess a height and all
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others do not. (That's intentional: it is Inform's one concession towards
multiple-inheritance, and it allows containers and doors to share lockability
behaviour despite being of mutually incompatible kinds.)
< / p >
< p class = "macrodefinition" > < code class = "display" >
< < span class = "cwebmacrodefn" > Construct a BP named for the quiddity and tested using the comparative schema< / span > < span class = "cwebmacronumber" > 14.2< / span > > =
< / code > < / p >
< pre class = "displaydefn" >
< span class = "reserved" > binary_predicate< / span > < span class = "plain" > *< / span > < span class = "identifier" > bp< / span > < span class = "plain" > ;< / span >
< span class = "identifier" > TEMPORARY_TEXT< / span > < span class = "plain" > (< / span > < span class = "identifier" > relname< / span > < span class = "plain" > );< / span >
< span class = "identifier" > WRITE_TO< / span > < span class = "plain" > (< / span > < span class = "identifier" > relname< / span > < span class = "plain" > , < / span > < span class = "string" > "%V"< / span > < span class = "plain" > , < / span > < span class = "identifier" > quiddity< / span > < span class = "plain" > );< / span >
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< span class = "identifier" > bp< / span > < span class = "plain" > = < / span > < span class = "functiontext" > < a href = "6-bp.html#SP28" > BinaryPredicates::make_pair< / a > < / span > < span class = "plain" > (< / span > < span class = "constant" > PROPERTY_COMPARISON_KBP< / span > < span class = "plain" > ,< / span >
< span class = "functiontext" > < a href = "6-bp.html#SP18" > BinaryPredicates::new_term< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ), < / span > < span class = "functiontext" > < a href = "6-bp.html#SP18" > BinaryPredicates::new_term< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ),< / span >
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< span class = "identifier" > relname< / span > < span class = "plain" > , < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > , < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > , < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > ,< / span >
< span class = "identifier" > schema_to_compare_property_values< / span > < span class = "plain" > , < / span > < span class = "identifier" > WordAssemblages::lit_1< / span > < span class = "plain" > (< / span > < span class = "identifier" > quiddity< / span > < span class = "plain" > ));< / span >
< span class = "identifier" > DISCARD_TEXT< / span > < span class = "plain" > (< / span > < span class = "identifier" > relname< / span > < span class = "plain" > );< / span >
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< span class = "functiontext" > < a href = "6-bp.html#SP43" > BinaryPredicates::set_comparison_details< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > bp< / span > < span class = "plain" > , < / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > region_shape< / span > < span class = "plain" > , < / span > < span class = "identifier" > mdef< / span > < span class = "plain" > -> < / span > < span class = "element" > prop< / span > < span class = "plain" > );< / span >
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< span class = "functiontext" > < a href = "15-ma.html#SP15" > Properties::Measurement::register_comparative< / a > < / span > < span class = "plain" > (< / span > < span class = "identifier" > comparative_form< / span > < span class = "plain" > , < / span > < span class = "identifier" > bp< / span > < span class = "plain" > );< / span >
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< / pre >
< p class = "inwebparagraph" > < / p >
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< p class = "endnote" > This code is used in < a href = "15-ma.html#SP14" > § 14< / a > .< / p >
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< p class = "inwebparagraph" > < a id = "SP15" > < / a > < b > § 15. Late registration of prepositions comparing properties. < / b > The following routines, used only when all the properties have been
created, make suitable comparatives ("bigger than", etc.) and
prepositional usages to test property-equality ("the same height as").
< / p >
< pre class = "display" >
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< span class = "reserved" > void< / span > < span class = "plain" > < / span > < span class = "functiontext" > Properties::Measurement::register_comparative< button class = "popup" onclick = "togglePopup('usagePopup1194')" > ...< span class = "popuptext" id = "usagePopup1194" > Usage of < b > Properties::Measurement::register_comparative< / b > :< br > < a href = "15-ma.html#SP14_2" > § 14.2< / a > < / span > < / button > < / 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" > binary_predicate< / span > < span class = "plain" > *< / span > < span class = "identifier" > root< / span > < span class = "plain" > ) {< / span >
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< span class = "identifier" > set_where_created< / span > < span class = "plain" > = < / span > < span class = "identifier" > current_sentence< / span > < span class = "plain" > ;< / span >
< span class = "identifier" > verb_meaning< / span > < span class = "plain" > < / span > < span class = "identifier" > vm< / span > < span class = "plain" > = < / span > < span class = "identifier" > VerbMeanings::new< / span > < span class = "plain" > (< / span > < span class = "identifier" > root< / span > < span class = "plain" > , < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > );< / span >
< span class = "identifier" > preposition_identity< / span > < span class = "plain" > *< / span > < span class = "identifier" > prep< / span > < span class = "plain" > =< / span >
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< span class = "identifier" > Prepositions::make< / span > < span class = "plain" > (< / span > < span class = "identifier" > Preform::Nonparsing::merge< / span > < span class = "plain" > (< < / span > < span class = "identifier" > comparative< / span > < span class = "plain" > -< / span > < span class = "reserved" > property< / span > < span class = "plain" > -< / span > < span class = "identifier" > construction< / span > < span class = "plain" > > , < / span > < span class = "constant" > 0< / span > < span class = "plain" > ,< / span >
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< span class = "identifier" > WordAssemblages::lit_1< / span > < span class = "plain" > (< / span > < span class = "identifier" > Lexer::word< / span > < span class = "plain" > (< / span > < span class = "identifier" > Wordings::first_wn< / span > < span class = "plain" > (< / span > < span class = "identifier" > W< / span > < span class = "plain" > )))), < / span > < span class = "identifier" > FALSE< / span > < span class = "plain" > );< / span >
< span class = "identifier" > Verbs::add_form< / span > < span class = "plain" > (< / span > < span class = "identifier" > copular_verb< / span > < span class = "plain" > , < / span > < span class = "identifier" > prep< / span > < span class = "plain" > , < / span > < span class = "identifier" > NULL< / span > < span class = "plain" > , < / span > < span class = "identifier" > vm< / span > < span class = "plain" > , < / span > < span class = "identifier" > SVO_FS_BIT< / span > < span class = "plain" > );< / span >
< span class = "plain" > }< / span >
< / pre >
< p class = "inwebparagraph" > < / p >
< p class = "inwebparagraph" > < a id = "SP16" > < / a > < b > § 16. < / b > When the source text creates a measurement adjective, such as:
< / p >
< blockquote >
< p > A man is tall if his height is 6 feet or more.< / p >
< / blockquote >
< p class = "inwebparagraph" > Inform also creates a comparative form of the adjective as a preposition:
< / p >
< pre class = "display" >
< span class = "plain" > < < / span > < span class = "identifier" > comparative< / span > < span class = "plain" > -< / span > < span class = "reserved" > property< / span > < span class = "plain" > -< / span > < span class = "identifier" > construction< / span > < span class = "plain" > > ::=< / span >
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< span class = "plain" > ... < / span > < span class = "identifier" > than< / span > < span class = "plain" > < / span > < span class = "comment" > Peter is taller than Claude< / span >
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< / pre >
< p class = "inwebparagraph" > < / p >
< p class = "inwebparagraph" > < a id = "SP17" > < / a > < b > § 17. < / b > And when Inform creates a value property, that also makes a preposition:
< / p >
< pre class = "display" >
< span class = "plain" > < < / span > < span class = "identifier" > same< / span > < span class = "plain" > -< / span > < span class = "reserved" > property< / span > < span class = "plain" > -< / span > < span class = "identifier" > as< / span > < span class = "plain" > -< / span > < span class = "identifier" > construction< / span > < span class = "plain" > > ::=< / span >
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< span class = "identifier" > the< / span > < span class = "plain" > < / span > < span class = "identifier" > same< / span > < span class = "plain" > ... < / span > < span class = "identifier" > as< / span > < span class = "plain" > < / span > < span class = "comment" > if Peter is the same height as Claude< / span >
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< / pre >
< p class = "inwebparagraph" > < / p >
< hr class = "tocbar" >
< ul class = "toc" > < li > < a href = "15-tpr.html" > Back to 'The Provision Relation'< / a > < / li > < li > < a href = "15-cr.html" > Continue with 'Comparative Relations'< / a > < / li > < / ul > < hr class = "tocbar" >
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<!-- End of weave -->
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