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< ul class = "crumbs" > < li > < a href = "../index.html" > Home< / a > < / li > < li > < a href = "../services.html" > Services< / a > < / li > < li > < a href = "index.html" > calculus< / a > < / li > < li > < a href = "index.html#2" > Chapter 2: Unary Predicates< / a > < / li > < li > < b > Unary Predicate Families< / b > < / li > < / ul > < / div >
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< p class = "purpose" > To create sets of unary predicates for different purposes.< / p >
< p class = "commentary firstcommentary" > < a id = "SP1" class = "paragraph-anchor" > < / a > < b > § 1. < / b > Want to create a new unary predicate? First you'll need a family for it to
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belong to. A < a href = "2-upf.html#SP1" class = "internal" > up_family< / a > object is simply a receiver for the method calls
providing the predicate's implementation. In effect, a family is a collection
of UPs which share an implementation.
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< / p >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "reserved-syntax" > typedef< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > up_family< / span > < span class = "plain-syntax" > {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > method_set< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > methods< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > CLASS_DEFINITION< / span >
< span class = "plain-syntax" > } < / span > < span class = "reserved-syntax" > up_family< / span > < span class = "plain-syntax" > ;< / span >
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< span class = "reserved-syntax" > up_family< / span > < span class = "plain-syntax" > *< / span > < span class = "function-syntax" > UnaryPredicateFamilies::new< / span > < button class = "popup" onclick = "togglePopup('usagePopup1')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup1" > Usage of < span class = "code-font" > < span class = "function-syntax" > UnaryPredicateFamilies::new< / span > < / span > :< br / > Kind Predicates - < a href = "2-kp.html#SP2" > § 2< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > up_family< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > f< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > CREATE< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > up_family< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > f< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > methods< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > Methods::new_set< / span > < span class = "plain-syntax" > ();< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > f< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< / pre >
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< ul class = "endnotetexts" > < li > The structure up_family is accessed in 3/bpf and here.< / li > < / ul >
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< p class = "commentary firstcommentary" > < a id = "SP2" class = "paragraph-anchor" > < / a > < b > § 2. < / b > < span class = "extract" > < span class = "extract-syntax" > STOCK_UPF_MTID< / span > < / span > is for stocking up on unaries, and happens very early
in Inform's run.
< / p >
< pre class = "definitions code-font" > < span class = "definition-keyword" > enum< / span > < span class = "constant-syntax" > STOCK_UPF_MTID< / span >
< / pre >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "identifier-syntax" > VOID_METHOD_TYPE< / span > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > STOCK_UPF_MTID< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > up_family< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > f< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > n< / span > < span class = "plain-syntax" > )< / span >
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< span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > UnaryPredicateFamilies::stock< / 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" > UnaryPredicateFamilies::stock< / span > < / span > :< br / > Binary Predicate Families - < a href = "3-bpf.html#SP2" > § 2< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > n< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > up_family< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > f< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > LOOP_OVER< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > f< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > up_family< / span > < span class = "plain-syntax" > )< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > VOID_METHOD_CALL< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > f< / span > < span class = "plain-syntax" > , < / span > < span class = "constant-syntax" > STOCK_UPF_MTID< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > n< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > }< / span >
< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP3" class = "paragraph-anchor" > < / a > < b > § 3. < / b > This method performs a type-check to see whether the value supplied as the
term of the predicate is acceptable. For example, < span class = "extract" > < span class = "extract-syntax" > even(t)< / span > < / span > should reject
< span class = "extract" > < span class = "extract-syntax" > t< / span > < / span > if it is a text, because < span class = "extract" > < span class = "extract-syntax" > even< / span > < / span > is meaningful only for numbers.
< / p >
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< pre class = "definitions code-font" > < span class = "definition-keyword" > enum< / span > < span class = "constant-syntax" > TYPECHECK_UPF_MTID< / span >
< / pre >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "reserved-syntax" > typedef< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > variable_type_assignment< / span > < span class = "plain-syntax" > {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > kind< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > assigned_kinds< / span > < span class = "plain-syntax" > [26]; < / span > < span class = "comment-syntax" > one for each of the 26 variables< / span >
< span class = "plain-syntax" > } < / span > < span class = "reserved-syntax" > variable_type_assignment< / span > < span class = "plain-syntax" > ;< / span >
< span class = "identifier-syntax" > INT_METHOD_TYPE< / span > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > TYPECHECK_UPF_MTID< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > up_family< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > f< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > unary_predicate< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > pcalc_prop< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > prop< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > variable_type_assignment< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > vta< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > tc_problem_kit< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > tck< / span > < span class = "plain-syntax" > )< / span >
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< span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > UnaryPredicateFamilies::typecheck< / 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" > UnaryPredicateFamilies::typecheck< / span > < / span > :< br / > Type Check Propositions - < a href = "4-tcp.html#SP4_5" > § 4.5< / a > , < a href = "4-tcp.html#SP8" > § 8< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > unary_predicate< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > ,< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > pcalc_prop< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > prop< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > variable_type_assignment< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > vta< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > tc_problem_kit< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > tck< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > rv< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > DECLINE_TO_MATCH< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > INT_METHOD_CALL< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > rv< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > family< / span > < span class = "plain-syntax" > , < / span > < span class = "constant-syntax" > TYPECHECK_UPF_MTID< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > prop< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > vta< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > tck< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > rv< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< / pre >
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< ul class = "endnotetexts" > < li > The structure variable_type_assignment is accessed in 4/tcp.< / li > < / ul >
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< p class = "commentary firstcommentary" > < a id = "SP4" class = "paragraph-anchor" > < / a > < b > § 4. < / b > A unary predicate is "testable" if its truth can be determined at compile
time. (We assume everything can be tested at run time.) For example,
< span class = "extract" > < span class = "extract-syntax" > kind=number(t)< / span > < / span > can generally be tested at compile time, but < span class = "extract" > < span class = "extract-syntax" > even(t)< / span > < / span > cannot.
< / p >
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< pre class = "definitions code-font" > < span class = "definition-keyword" > enum< / span > < span class = "constant-syntax" > TESTABLE_UPF_MTID< / span >
< / pre >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "identifier-syntax" > INT_METHOD_TYPE< / span > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > TESTABLE_UPF_MTID< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > up_family< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > f< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > unary_predicate< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > )< / span >
< span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > UnaryPredicateFamilies::testable< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > unary_predicate< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > rv< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > INT_METHOD_CALL< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > rv< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > family< / span > < span class = "plain-syntax" > , < / span > < span class = "constant-syntax" > TESTABLE_UPF_MTID< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > rv< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP5" class = "paragraph-anchor" > < / a > < b > § 5. < / b > And for a testable UP, the following should perform that test. It will never
be called for non-testable ones.
< / p >
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< pre class = "definitions code-font" > < span class = "definition-keyword" > enum< / span > < span class = "constant-syntax" > TEST_UPF_MTID< / span >
< / pre >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "identifier-syntax" > INT_METHOD_TYPE< / span > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > TEST_UPF_MTID< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > up_family< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > f< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > unary_predicate< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "constant-syntax" > TERM_DOMAIN_CALCULUS_TYPE< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > about< / span > < span class = "plain-syntax" > )< / span >
< span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > UnaryPredicateFamilies::test< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > unary_predicate< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > , < / span > < span class = "constant-syntax" > TERM_DOMAIN_CALCULUS_TYPE< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > about< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > rv< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > INT_METHOD_CALL< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > rv< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > family< / span > < span class = "plain-syntax" > , < / span > < span class = "constant-syntax" > TEST_UPF_MTID< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > about< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > rv< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
< p class = "commentary firstcommentary" > < a id = "SP6" class = "paragraph-anchor" > < / a > < b > § 6. < / b > Assertion is used in Inform when constructing the model world. The < a href = "index.html" class = "internal" > calculus< / a >
module doesn't really get involved in this, and provides this method only for
Inform's benefit.
< / p >
< pre class = "definitions code-font" > < span class = "definition-keyword" > enum< / span > < span class = "constant-syntax" > ASSERT_UPF_MTID< / span >
< / pre >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "identifier-syntax" > VOID_METHOD_TYPE< / span > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > ASSERT_UPF_MTID< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > up_family< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > f< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > unary_predicate< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > now_negated< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > pcalc_prop< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > pl< / span > < span class = "plain-syntax" > )< / span >
< span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > UnaryPredicateFamilies::assert< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > unary_predicate< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > now_negated< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > pcalc_prop< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > pl< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > VOID_METHOD_CALL< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > family< / span > < span class = "plain-syntax" > , < / span > < span class = "constant-syntax" > ASSERT_UPF_MTID< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > now_negated< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > pl< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > }< / span >
< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP7" class = "paragraph-anchor" > < / a > < b > § 7. < / b > Schemas are used in compilation: see < a href = "3-cs.html" class = "internal" > Compilation Schemas< / a > for more.
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Again, the < a href = "index.html" class = "internal" > calculus< / a > module doesn't really get involved in this.
< / p >
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< pre class = "definitions code-font" > < span class = "definition-keyword" > enum< / span > < span class = "constant-syntax" > SCHEMA_UPF_MTID< / span >
< / pre >
< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "identifier-syntax" > VOID_METHOD_TYPE< / span > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > SCHEMA_UPF_MTID< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > up_family< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > f< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > task< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > unary_predicate< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > annotated_i6_schema< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > asch< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > kind< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > K< / span > < span class = "plain-syntax" > )< / span >
< span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > UnaryPredicateFamilies::get_schema< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > task< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > unary_predicate< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > annotated_i6_schema< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > asch< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > kind< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > K< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > VOID_METHOD_CALL< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > family< / span > < span class = "plain-syntax" > , < / span > < span class = "constant-syntax" > SCHEMA_UPF_MTID< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > task< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > asch< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > K< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > }< / span >
< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP8" class = "paragraph-anchor" > < / a > < b > § 8. < / b > If the usage of this UP implies the kind of its term, here's where we say so.
The obvious example is < span class = "extract" > < span class = "extract-syntax" > kind=K(t)< / span > < / span > , which necessarily means < span class = "extract" > < span class = "extract-syntax" > t< / span > < / span > has kind < span class = "extract" > < span class = "extract-syntax" > K< / span > < / span > .
But one could also imagine UPs which are appropriate only for, say, real numbers.
< / p >
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< pre class = "definitions code-font" > < span class = "definition-keyword" > enum< / span > < span class = "constant-syntax" > INFER_KIND_UPF_MTID< / span >
< / pre >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "identifier-syntax" > VOID_METHOD_TYPE< / span > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > INFER_KIND_UPF_MTID< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > up_family< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > f< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > unary_predicate< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > kind< / span > < span class = "plain-syntax" > **< / span > < span class = "identifier-syntax" > K< / span > < span class = "plain-syntax" > )< / span >
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< span class = "identifier-syntax" > kind< / span > < span class = "plain-syntax" > *< / span > < span class = "function-syntax" > UnaryPredicateFamilies::infer_kind< / span > < button class = "popup" onclick = "togglePopup('usagePopup4')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup4" > Usage of < span class = "code-font" > < span class = "function-syntax" > UnaryPredicateFamilies::infer_kind< / span > < / span > :< br / > Binding and Substitution - < a href = "4-bas.html#SP16" > § 16< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > unary_predicate< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > kind< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > K< / 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" > VOID_METHOD_CALL< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > family< / span > < span class = "plain-syntax" > , < / span > < span class = "constant-syntax" > INFER_KIND_UPF_MTID< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > , & < / span > < span class = "identifier-syntax" > K< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > K< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP9" class = "paragraph-anchor" > < / a > < b > § 9. < / b > Logging should be brief: something like < span class = "extract" > < span class = "extract-syntax" > kind=number< / span > < / span > is plenty.
< / p >
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< pre class = "definitions code-font" > < span class = "definition-keyword" > enum< / span > < span class = "constant-syntax" > LOG_UPF_MTID< / span >
< / pre >
< pre class = "displayed-code all-displayed-code code-font" >
< span class = "identifier-syntax" > VOID_METHOD_TYPE< / span > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > LOG_UPF_MTID< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > up_family< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > f< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > text_stream< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > OUT< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > unary_predicate< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > )< / span >
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< span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > UnaryPredicateFamilies::log< / span > < button class = "popup" onclick = "togglePopup('usagePopup5')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup5" > Usage of < span class = "code-font" > < span class = "function-syntax" > UnaryPredicateFamilies::log< / span > < / span > :< br / > Unary Predicates - < a href = "2-up.html#SP2" > § 2< / a > < br / > Atomic Propositions - < a href = "4-ap.html#SP14_2" > § 14.2< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > OUTPUT_STREAM< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > unary_predicate< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > VOID_METHOD_CALL< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > family< / span > < span class = "plain-syntax" > , < / span > < span class = "constant-syntax" > LOG_UPF_MTID< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > OUT< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > up< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > }< / span >
< / pre >
< nav role = "progress" > < div class = "progresscontainer" >
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< ul class = "progressbar" > < li class = "progressprev" > < a href = "2-up.html" > ❮ < / a > < / li > < li class = "progresschapter" > < a href = "P-wtmd.html" > P< / a > < / li > < li class = "progresschapter" > < a href = "1-cm.html" > 1< / a > < / li > < li class = "progresscurrentchapter" > 2< / li > < li class = "progresssection" > < a href = "2-up.html" > up< / a > < / li > < li class = "progresscurrent" > upf< / li > < li class = "progresssection" > < a href = "2-kp.html" > kp< / a > < / li > < li class = "progresschapter" > < a href = "3-bpf.html" > 3< / a > < / li > < li class = "progresschapter" > < a href = "4-trm.html" > 4< / a > < / li > < li class = "progresschapter" > < a href = "5-sc.html" > 5< / a > < / li > < li class = "progressnext" > < a href = "2-kp.html" > ❯ < / a > < / li > < / ul > < / div >
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< / nav > <!-- End of weave -->
< / main >
< / body >
< / html >