2021-02-06 20:00:34 +02:00
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<!-- Weave of 'Relation Knowledge' generated by Inweb -->
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< ul class = "crumbs" > < li > < a href = "../index.html" > Home< / a > < / li > < li > < a href = "../compiler.html" > Inform7< / a > < / li > < li > < a href = "index.html" > assertions< / a > < / li > < li > < a href = "index.html#4" > Chapter 4: Assertions< / a > < / li > < li > < b > Relation Knowledge< / b > < / li > < / ul > < / div >
< p class = "purpose" > This section draws inferences about the relationships between objects or values.< / p >
< ul class = "toc" > < li > < a href = "4-rk.html#SP1" > § 1. Relationship nodes< / a > < / li > < / ul > < hr class = "tocbar" >
< p class = "commentary firstcommentary" > < a id = "SP1" class = "paragraph-anchor" > < / a > < b > § 1. Relationship nodes. < / b > Here we have a relationship between subtrees \(T_X\) and \(T_Y\), where \(T_X\)
must be a list of values or objects (joined into an < span class = "extract" > < span class = "extract-syntax" > AND_NT< / span > < / span > tree), and
\(T_Y\) must be a < span class = "extract" > < span class = "extract-syntax" > RELATIONSHIP_NT< / span > < / span > subtree — which is usually a node
annotated with the predicate meant, and beneath that another list of
objects or values, but there are two exceptional cases to take care of.
< / p >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > Assertions::Relational::assert_subtree_in_relationship< / span > < button class = "popup" onclick = "togglePopup('usagePopup1')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup1" > Usage of < span class = "code-font" > < span class = "function-syntax" > Assertions::Relational::assert_subtree_in_relationship< / span > < / span > :< br / > Assertions - < a href = "4-ass.html#SP6_3_34_4" > § 6.3.34.4< / a > , < a href = "4-ass.html#SP6_3_36" > § 6.3.36< / a > , < a href = "4-ass.html#SP6_3_37" > § 6.3.37< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > parse_node< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > value< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > parse_node< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > value< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ) || (< / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ))< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > internal_error< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "assert relation between null subtrees"< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Node::get_type< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > ) != < / span > < span class = "identifier-syntax" > RELATIONSHIP_NT< / span > < span class = "plain-syntax" > )< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > internal_error< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "asserted malformed relationship subtree"< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Node::get_type< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > value< / span > < span class = "plain-syntax" > ) == < / span > < span class = "identifier-syntax" > AND_NT< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < a href = "4-rk.html#SP1" class = "function-link" > < span class = "function-syntax" > Assertions::Relational::assert_subtree_in_relationship< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > value< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < a href = "4-rk.html#SP1" class = "function-link" > < span class = "function-syntax" > Assertions::Relational::assert_subtree_in_relationship< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > value< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > next< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > #< / span > < span class = "identifier-syntax" > ifdef< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > IF_MODULE< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > PL::MapDirections::get_mapping_relationship< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > ))< / span >
< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "4-rk.html#SP1_3" class = "named-paragraph-link" > < span class = "named-paragraph" > Exceptional relationship nodes for map connections< / span > < span class = "named-paragraph-number" > 1.3< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > pronoun_usage< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > pro< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > Node::get_pronoun< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > pro< / span > < span class = "plain-syntax" > ) & & (< / span > < span class = "identifier-syntax" > pro< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > pronoun_used< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > here_pronoun< / span > < span class = "plain-syntax" > ))< / span >
< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "4-rk.html#SP1_2" class = "named-paragraph-link" > < span class = "named-paragraph" > Exceptional relationship nodes for placing objects "here"< / span > < span class = "named-paragraph-number" > 1.2< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > #< / span > < span class = "identifier-syntax" > endif< / span >
< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "4-rk.html#SP1_1" class = "named-paragraph-link" > < span class = "named-paragraph" > Standard relationship nodes (the vast majority)< / span > < span class = "named-paragraph-number" > 1.1< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< / pre >
< p class = "commentary firstcommentary" > < a id = "SP1_1" class = "paragraph-anchor" > < / a > < b > § 1.1. < / b > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Standard relationship nodes (the vast majority)< / span > < span class = "named-paragraph-number" > 1.1< / span > < / span > < span class = "comment-syntax" > =< / span >
< / p >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > binary_predicate< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > bp< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > BinaryPredicates::get_reversal< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Node::get_relationship< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > ));< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > bp< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > internal_error< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "asserted bp-less relationship subtree"< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Properties::SettingRelations::fix_property_bp< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > bp< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < a href = "4-rk.html#SP3" class = "function-link" > < span class = "function-syntax" > Assertions::Relational::assert_relation_between_subtrees< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > value< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > bp< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > ;< / span >
< / pre >
< ul class = "endnotetexts" > < li > This code is used in < a href = "4-rk.html#SP1" > § 1< / a > .< / li > < / ul >
< p class = "commentary firstcommentary" > < a id = "SP1_2" class = "paragraph-anchor" > < / a > < b > § 1.2. < / b > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Exceptional relationship nodes for placing objects "here"< / span > < span class = "named-paragraph-number" > 1.2< / span > < / span > < span class = "comment-syntax" > =< / span >
< / p >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Node::get_subject< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > value< / span > < span class = "plain-syntax" > ) == < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > StandardProblems::sentence_problem< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Task::syntax_tree< / span > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > _p_< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > PM_HereFailedOnNothing< / span > < span class = "plain-syntax" > ),< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "that is an assertion which puts nothing 'here'"< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "which looks as if it might be trying to give me negative rather "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "than positive information. There's no need to tell me something "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "like 'Here is nothing.': just don't put anything there."< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > } < / span > < span class = "reserved-syntax" > else< / span > < span class = "plain-syntax" > {< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Assert::true_about< / span > < span class = "plain-syntax" > (< / span >
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< span class = "plain-syntax" > < / span > < a href = "6-cu.html#SP6" class = "function-link" > < span class = "function-syntax" > Propositions::Abstract::to_put_here< / span > < / a > < span class = "plain-syntax" > (),< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Node::get_subject< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > value< / span > < span class = "plain-syntax" > ), < / span > < span class = "identifier-syntax" > prevailing_mood< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > ;< / span >
< / pre >
< ul class = "endnotetexts" > < li > This code is used in < a href = "4-rk.html#SP1" > § 1< / a > .< / li > < / ul >
< p class = "commentary firstcommentary" > < a id = "SP1_3" class = "paragraph-anchor" > < / a > < b > § 1.3. < / b > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Exceptional relationship nodes for map connections< / span > < span class = "named-paragraph-number" > 1.3< / span > < / span > < span class = "comment-syntax" > =< / span >
< / p >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "4-rk.html#SP1_3_1" class = "named-paragraph-link" > < span class = "named-paragraph" > Make some paranoid checks that the map subtree is valid< / span > < span class = "named-paragraph-number" > 1.3.1< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < a href = "4-rk.html#SP2" class = "function-link" > < span class = "function-syntax" > Assertions::Relational::substitute_at_node< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < a href = "4-rk.html#SP2" class = "function-link" > < span class = "function-syntax" > Assertions::Relational::substitute_at_node< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > next< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > inference_subject< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > iy< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > Node::get_subject< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > inference_subject< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > id< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > Node::get_subject< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > next< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > iy< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Rvalues::is_nothing_object_constant< / span > < span class = "plain-syntax" > (< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Node::get_evaluation< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > )))< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > StandardProblems::sentence_problem< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Task::syntax_tree< / span > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > _p_< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > PM_MapFromNowhere< / span > < span class = "plain-syntax" > ),< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "the source of a map connection can't be nowhere"< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "so sentences like 'The pink door is south of nowhere.' are not "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "allowed."< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > else< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > StandardProblems::sentence_problem< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Task::syntax_tree< / span > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > _p_< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > PM_MapFromNonroom2< / span > < span class = "plain-syntax" > ),< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "the source of a map connection has to be a room or door"< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "so sentences like 'The pink door is south of 0.' are not "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "allowed."< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > iy< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ) || (< / span > < span class = "identifier-syntax" > id< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ))< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > internal_error< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "malformed directional subtree"< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Rvalues::is_nothing_object_constant< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > value< / span > < span class = "plain-syntax" > ))< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > PL::Map::connect< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > iy< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > id< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > else< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Rvalues::is_object< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Node::get_evaluation< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > value< / span > < span class = "plain-syntax" > )))< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > PL::Map::connect< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > iy< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > Node::get_subject< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > value< / span > < span class = "plain-syntax" > ), < / span > < span class = "identifier-syntax" > id< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > else< / span > < span class = "plain-syntax" > {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > LOG< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "Val is $P\n"< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > value< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > StandardProblems::sentence_problem< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Task::syntax_tree< / span > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > _p_< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > PM_MapToNonobject< / span > < span class = "plain-syntax" > ),< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "the destination of a map connection has to be either a room, "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "a door or 'nowhere'"< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "but here the destination doesn't even seem to be an object."< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > ;< / span >
< / pre >
< ul class = "endnotetexts" > < li > This code is used in < a href = "4-rk.html#SP1" > § 1< / a > .< / li > < / ul >
< p class = "commentary firstcommentary" > < a id = "SP1_3_1" class = "paragraph-anchor" > < / a > < b > § 1.3.1. < / b > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Make some paranoid checks that the map subtree is valid< / span > < span class = "named-paragraph-number" > 1.3.1< / span > < / span > < span class = "comment-syntax" > =< / span >
< / p >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ) ||< / span >
< span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > next< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ) ||< / span >
< span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > next< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > next< / span > < span class = "plain-syntax" > != < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ))< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > internal_error< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "malformed DIRECTION"< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Node::get_type< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > ) != < / span > < span class = "identifier-syntax" > PROPER_NOUN_NT< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > StandardProblems::sentence_problem< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Task::syntax_tree< / span > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > _p_< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > BelievedImpossible< / span > < span class = "plain-syntax" > ),< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "this is not straightforward in saying which room (or door) leads away from"< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "and should just name the source."< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Node::get_type< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > relationship_subtree< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > next< / span > < span class = "plain-syntax" > ) != < / span > < span class = "identifier-syntax" > PROPER_NOUN_NT< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > StandardProblems::sentence_problem< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Task::syntax_tree< / span > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > _p_< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > BelievedImpossible< / span > < span class = "plain-syntax" > ),< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "this is not straightforward in saying which direction the room (or door) lies in"< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "and should just name the direction."< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< / pre >
< ul class = "endnotetexts" > < li > This code is used in < a href = "4-rk.html#SP1_3" > § 1.3< / a > .< / li > < / ul >
< p class = "commentary firstcommentary" > < a id = "SP2" class = "paragraph-anchor" > < / a > < b > § 2. < / b > < / p >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > Assertions::Relational::substitute_at_node< / span > < button class = "popup" onclick = "togglePopup('usagePopup2')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup2" > Usage of < span class = "code-font" > < span class = "function-syntax" > Assertions::Relational::substitute_at_node< / span > < / span > :< br / > < a href = "4-rk.html#SP1_3" > § 1.3< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > parse_node< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > p< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > parse_node< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > spec< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > Node::get_evaluation< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > p< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > spec< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > NonlocalVariables::substitute_constants< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > spec< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < a href = "4-rpt.html#SP1" class = "function-link" > < span class = "function-syntax" > Refiner::give_spec_to_noun< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > p< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > spec< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > }< / span >
< / pre >
< p class = "commentary firstcommentary" > < a id = "SP3" class = "paragraph-anchor" > < / a > < b > § 3. < / b > So the majority case above calls < span class = "extract" > < span class = "extract-syntax" > Assertions::Relational::assert_relation_between_subtrees< / span > < / span > to say
that subtrees \(T_X\) and \(T_Y\), where \(T_X\) is a single value or object and
\(T_Y\) is a list of values or objects (joined into an < span class = "extract" > < span class = "extract-syntax" > AND_NT< / span > < / span > tree).
< / p >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > Assertions::Relational::assert_relation_between_subtrees< / span > < button class = "popup" onclick = "togglePopup('usagePopup3')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup3" > Usage of < span class = "code-font" > < span class = "function-syntax" > Assertions::Relational::assert_relation_between_subtrees< / span > < / span > :< br / > < a href = "4-rk.html#SP1_1" > § 1.1< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > parse_node< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > px< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > binary_predicate< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > bp< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > parse_node< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Node::get_type< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > ) == < / span > < span class = "identifier-syntax" > AND_NT< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < a href = "4-rk.html#SP3" class = "function-link" > < span class = "function-syntax" > Assertions::Relational::assert_relation_between_subtrees< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > px< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > bp< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < a href = "4-rk.html#SP3" class = "function-link" > < span class = "function-syntax" > Assertions::Relational::assert_relation_between_subtrees< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > px< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > bp< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > next< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Node::get_type< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > ) == < / span > < span class = "identifier-syntax" > WITH_NT< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < a href = "4-rk.html#SP3" class = "function-link" > < span class = "function-syntax" > Assertions::Relational::assert_relation_between_subtrees< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > px< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > bp< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > down< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Node::get_type< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > ) == < / span > < span class = "identifier-syntax" > EVERY_NT< / span > < span class = "plain-syntax" > ) < / span > < span class = "named-paragraph-container code-font" > < a href = "4-rk.html#SP3_3" class = "named-paragraph-link" > < span class = "named-paragraph" > Issue problem for "every" used on the right< / span > < span class = "named-paragraph-number" > 3.3< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "comment-syntax" > reverse the relation (and swap the terms) to ensure it's the right way round< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > BinaryPredicates::is_the_wrong_way_round< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > bp< / span > < span class = "plain-syntax" > )) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > parse_node< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > pz< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > px< / span > < span class = "plain-syntax" > ; < / span > < span class = "identifier-syntax" > px< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > ; < / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > pz< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > bp< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > BinaryPredicates::get_reversal< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > bp< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "4-rk.html#SP3_1" class = "named-paragraph-link" > < span class = "named-paragraph" > Normalise the two noun leaves< / span > < span class = "named-paragraph-number" > 3.1< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "4-rk.html#SP3_2" class = "named-paragraph-link" > < span class = "named-paragraph" > Impose a tedious restriction on relations between objects and values< / span > < span class = "named-paragraph-number" > 3.2< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
2021-02-09 23:27:52 +02:00
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > Assert::true< / span > < span class = "plain-syntax" > (< / span >
2021-02-07 14:44:02 +02:00
< span class = "plain-syntax" > < / span > < a href = "6-cu.html#SP4" class = "function-link" > < span class = "function-syntax" > Propositions::Abstract::to_set_relation< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > bp< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > Node::get_subject< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > px< / span > < span class = "plain-syntax" > ), < / span > < span class = "identifier-syntax" > Node::get_evaluation< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > px< / span > < span class = "plain-syntax" > ), < / span > < span class = "identifier-syntax" > Node::get_subject< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > ), < / span > < span class = "identifier-syntax" > Node::get_evaluation< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > )),< / span >
2021-02-06 20:00:34 +02:00
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > prevailing_mood< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > }< / span >
< / pre >
< p class = "commentary firstcommentary" > < a id = "SP3_1" class = "paragraph-anchor" > < / a > < b > § 3.1. < / b > Both sides have to be nouns representing constant values:
< / p >
< p class = "commentary" > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Normalise the two noun leaves< / span > < span class = "named-paragraph-number" > 3.1< / span > < / span > < span class = "comment-syntax" > =< / span >
< / p >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "plain-syntax" > < / span > < a href = "4-rpt.html#SP6" class = "function-link" > < span class = "function-syntax" > Refiner::nominalise_adjective< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > px< / span > < span class = "plain-syntax" > ); < / span > < a href = "4-rpt.html#SP4" class = "function-link" > < span class = "function-syntax" > Refiner::turn_player_to_yourself< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > px< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < a href = "4-rpt.html#SP6" class = "function-link" > < span class = "function-syntax" > Refiner::nominalise_adjective< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > ); < / span > < a href = "4-rpt.html#SP4" class = "function-link" > < span class = "function-syntax" > Refiner::turn_player_to_yourself< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (((< / span > < span class = "identifier-syntax" > Node::get_type< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > px< / span > < span class = "plain-syntax" > ) != < / span > < span class = "identifier-syntax" > PROPER_NOUN_NT< / span > < span class = "plain-syntax" > ) & & (< / span > < span class = "identifier-syntax" > Node::get_type< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > px< / span > < span class = "plain-syntax" > ) != < / span > < span class = "identifier-syntax" > COMMON_NOUN_NT< / span > < span class = "plain-syntax" > )) ||< / span >
< span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > Node::get_type< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > ) != < / span > < span class = "identifier-syntax" > PROPER_NOUN_NT< / span > < span class = "plain-syntax" > ) & & (< / span > < span class = "identifier-syntax" > Node::get_type< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > ) != < / span > < span class = "identifier-syntax" > COMMON_NOUN_NT< / span > < span class = "plain-syntax" > ))) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > StandardProblems::sentence_problem< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Task::syntax_tree< / span > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > _p_< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > PM_BadRelation< / span > < span class = "plain-syntax" > ),< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "this description of a relationship makes no sense to me"< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "and should be something like 'X is in Y' (or 'on' or 'part of Y'); "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "or else 'X is here' or 'X is east of Y'."< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< / pre >
< ul class = "endnotetexts" > < li > This code is used in < a href = "4-rk.html#SP3" > § 3< / a > .< / li > < / ul >
< p class = "commentary firstcommentary" > < a id = "SP3_2" class = "paragraph-anchor" > < / a > < b > § 3.2. < / b > At some point we should probably revisit this.
< / p >
< p class = "commentary" > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Impose a tedious restriction on relations between objects and values< / span > < span class = "named-paragraph-number" > 3.2< / span > < / span > < span class = "comment-syntax" > =< / span >
< / p >
< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < a href = "6-er.html#SP4" class = "function-link" > < span class = "function-syntax" > Relations::Explicit::relates_values_not_objects< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > bp< / span > < span class = "plain-syntax" > )) & & < / span >
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< span class = "plain-syntax" > (((< / span > < span class = "identifier-syntax" > Node::get_subject< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > px< / span > < span class = "plain-syntax" > )) & & (< / span > < span class = "identifier-syntax" > Kinds::Knowledge::from_infs< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Node::get_subject< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > px< / span > < span class = "plain-syntax" > )))) ||< / span >
< span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > Node::get_subject< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > )) & & (< / span > < span class = "identifier-syntax" > Kinds::Knowledge::from_infs< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Node::get_subject< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > py< / span > < span class = "plain-syntax" > )))))) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > StandardProblems::sentence_problem< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Task::syntax_tree< / span > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > _p_< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > PM_KindRelatedToValue< / span > < span class = "plain-syntax" > ),< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "relations between objects and values have to be made one "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "object at a time"< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "not using kinds of object to make multiple relationships in "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "a single sentence. (Sorry for this restriction. It's sometimes "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "possible to get around it using words like 'every': for example, "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "'Every person is in the Ballroom.' is allowed.)"< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< / pre >
< ul class = "endnotetexts" > < li > This code is used in < a href = "4-rk.html#SP3" > § 3< / a > .< / li > < / ul >
< p class = "commentary firstcommentary" > < a id = "SP3_3" class = "paragraph-anchor" > < / a > < b > § 3.3. < / b > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Issue problem for "every" used on the right< / span > < span class = "named-paragraph-number" > 3.3< / span > < / span > < span class = "comment-syntax" > =< / span >
< / p >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > StandardProblems::sentence_problem< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > Task::syntax_tree< / span > < span class = "plain-syntax" > (), < / span > < span class = "identifier-syntax" > _p_< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > PM_EveryWrongSide< / span > < span class = "plain-syntax" > ),< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "'every' can only be used on the other side of the verb"< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "because of limitations in Inform (but also to avoid certain possible "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "ambiguities). In general, 'every' should be applied to the subject of an "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "assertion sentence and not the object. Thus 'Sir Francis prefers every "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "blonde' is not allowed, but 'Every blonde is preferred by Sir Francis' is. "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "(It would be different if, instead of Sir Francis who's just one man, "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "the name of a kind appeared: 'A vehicle is in every room' is fine, for "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "example, because 'vehicle' is a kind.)"< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > ;< / span >
< / pre >
< ul class = "endnotetexts" > < li > This code is used in < a href = "4-rk.html#SP3" > § 3< / a > .< / li > < / ul >
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< / nav > <!-- End of weave -->
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