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< ul class = "crumbs" > < li > < a href = "../index.html" > Home< / a > < / li > < li > < a href = "../inform7n.html" > Inform7< / a > < / li > < li > < a href = "index.html" > if< / a > < / li > < li > < a href = "index.html#5" > Chapter 5: Command Parser< / a > < / li > < li > < b > Determination Types< / b > < / li > < / ul > < / div >
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< p class = "purpose" > Command grammars, their lines and their tokens may each "determine" up to two values, and here we provide a way to describe the range of those.< / p >
< p class = "commentary firstcommentary" > < a id = "SP1" class = "paragraph-anchor" > < / a > < b > § 1. < / b > Determination is the process by which Inform looks at a command grammar,
or a line in one, or a token in one of those lines, and works out what value
or values this grammar is talking about. Those could be specific values or
whole kinds, and so we use a specification — which will always be an rvalue
or a description — for each value.
< / p >
< p class = "commentary" > For example, the grammar line created in:
< / p >
< blockquote >
< p > Understand "put [other things] on/onto [something]" as putting it on.< / p >
< / blockquote >
< p class = "commentary" > has a determination type with two terms, one a description of < span class = "extract" > < span class = "extract-syntax" > K_thing< / span > < / span > with
multiplicity < span class = "extract" > < span class = "extract-syntax" > TRUE< / span > < / span > , and the other a description of < span class = "extract" > < span class = "extract-syntax" > K_thing< / span > < / span > without.
< / p >
< pre class = "definitions code-font" > < span class = "definition-keyword" > define< / span > < span class = "constant-syntax" > MAX_DETERMINATION_TYPE_TERMS< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > 2< / 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" > determination_type< / 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" > no_values_described< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > determination_type_term< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > term< / span > < span class = "plain-syntax" > [< / span > < span class = "constant-syntax" > MAX_DETERMINATION_TYPE_TERMS< / span > < span class = "plain-syntax" > ];< / span >
< span class = "plain-syntax" > } < / span > < span class = "reserved-syntax" > determination_type< / span > < span class = "plain-syntax" > ;< / span >
< 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" > determination_type_term< / 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" > parse_node< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > what< / span > < span class = "plain-syntax" > ; < / span > < span class = "comment-syntax" > always an rvalue or a description< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > multiplicity< / span > < span class = "plain-syntax" > ; < / span > < span class = "comment-syntax" > relevant for lines only: allow a multiple object here?< / span >
< span class = "plain-syntax" > } < / span > < span class = "reserved-syntax" > determination_type_term< / 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" > DeterminationTypes::get_no_values_described< / 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" > DeterminationTypes::get_no_values_described< / span > < / span > :< br / > Command Grammar Lines - < a href = "5-cgl.html#SP16_1" > § 16.1< / a > , < a href = "5-cgl.html#SP16_2" > § 16.2< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > determination_type< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > ;< / 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" > DeterminationTypes::log< / 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" > DeterminationTypes::log< / span > < / span > :< br / > Command Grammar Lines - < a href = "5-cgl.html#SP16" > § 16< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > determination_type< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > dt< / 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" > dt< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > LOG< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "< no-dt> "< / 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" > dt< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > LOG< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "void"< / 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" > for< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > =0; < / span > < span class = "identifier-syntax" > t< / span > < span class = "function-syntax" > < dt-> < / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > ; < / span > < span class = "identifier-syntax" > t< / 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" > "%s%d:$P%s"< / span > < span class = "plain-syntax" > , (< / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > > 0)?< / span > < span class = "string-syntax" > " "< / span > < span class = "plain-syntax" > :< / span > < span class = "string-syntax" > ""< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > dt< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [< / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > ].< / span > < span class = "element-syntax" > what< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > dt< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [< / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > ].< / span > < span class = "element-syntax" > multiplicity< / span > < span class = "plain-syntax" > )?< / span > < span class = "string-syntax" > "(multiple)"< / span > < span class = "plain-syntax" > :< / span > < span class = "string-syntax" > ""< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
< ul class = "endnotetexts" > < li > The structure determination_type is private to this section.< / li > < li > The structure determination_type_term is private to this section.< / li > < / ul >
< p class = "commentary firstcommentary" > < a id = "SP2" class = "paragraph-anchor" > < / a > < b > § 2. < / b > This function returns the equivalent of the < span class = "extract" > < span class = "extract-syntax" > void< / span > < / span > type in C: something
which describes no values at all.
< / p >
< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "reserved-syntax" > determination_type< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > DeterminationTypes::new< / 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" > DeterminationTypes::new< / span > < / span > :< br / > Command Grammars - < a href = "5-cg.html#SP4" > § 4< / a > < br / > Command Grammar Lines - < a href = "5-cgl.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" > determination_type< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > for< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > =0; < / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > < < / span > < span class = "constant-syntax" > MAX_DETERMINATION_TYPE_TERMS< / span > < span class = "plain-syntax" > ; < / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > ++) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [< / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > ].< / span > < span class = "element-syntax" > what< / 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" > gty< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [< / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > ].< / span > < span class = "element-syntax" > multiplicity< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > gty< / 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 > And then call this to make more interesting DTs:
< / p >
< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > DeterminationTypes::add_term< / 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" > DeterminationTypes::add_term< / span > < / span > :< br / > Command Grammar Lines - < a href = "5-cgl.html#SP16_1" > § 16.1< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > determination_type< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > gty< / 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 >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > multiple_flag< / 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" > gty< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > > = < / span > < span class = "constant-syntax" > MAX_DETERMINATION_TYPE_TERMS< / 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 = "plain-syntax" > < / span > < span class = "identifier-syntax" > _p_< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > PM_ThreeValuedLine< / span > < span class = "plain-syntax" > ),< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "there can be at most two varying parts to a line of grammar"< / span > < span class = "plain-syntax" > ,< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "so 'put [something] in [a container]' is allowed but 'put "< / span >
< span class = "plain-syntax" > < / span > < span class = "string-syntax" > "[something] in [something] beside [a door]' is not."< / 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" > gty< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [< / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > ].< / span > < span class = "element-syntax" > what< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > spec< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [< / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > ].< / span > < span class = "element-syntax" > multiplicity< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > multiple_flag< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > ++;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > }< / span >
< / pre >
< p class = "commentary firstcommentary" > < a id = "SP4" class = "paragraph-anchor" > < / a > < b > § 4. < / b > When dealing with grammar describing just a single value, these functions
are convenient:
< / p >
< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "identifier-syntax" > parse_node< / span > < span class = "plain-syntax" > *< / span > < span class = "function-syntax" > DeterminationTypes::get_single_term< / 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" > DeterminationTypes::get_single_term< / span > < / span > :< br / > Command Grammars - < a href = "5-cg.html#SP20_1" > § 20.1< / a > , < a href = "5-cg.html#SP20_3" > § 20.3< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > determination_type< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > 1< / span > < span class = "plain-syntax" > ) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [0].< / span > < span class = "element-syntax" > what< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< span class = "identifier-syntax" > kind< / span > < span class = "plain-syntax" > *< / span > < span class = "function-syntax" > DeterminationTypes::get_single_kind< / span > < button class = "popup" onclick = "togglePopup('usagePopup6')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup6" > Usage of < span class = "code-font" > < span class = "function-syntax" > DeterminationTypes::get_single_kind< / span > < / span > :< br / > Command Grammars - < a href = "5-cg.html#SP18" > § 18< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > determination_type< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > 1< / span > < span class = "plain-syntax" > ) & & (< / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [0].< / span > < span class = "element-syntax" > what< / 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" > Specifications::to_kind< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [0].< / span > < span class = "element-syntax" > what< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > DeterminationTypes::set_single_term< / span > < button class = "popup" onclick = "togglePopup('usagePopup7')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup7" > Usage of < span class = "code-font" > < span class = "function-syntax" > DeterminationTypes::set_single_term< / span > < / span > :< br / > Command Grammars - < a href = "5-cg.html#SP20_4" > § 20.4< / a > < br / > Command Grammar Lines - < a href = "5-cgl.html#SP8" > § 8< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > determination_type< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > gty< / 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 >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > spec< / 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" > gty< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > } < / span > < span class = "reserved-syntax" > else< / span > < span class = "plain-syntax" > {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > 1< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [0].< / span > < span class = "element-syntax" > what< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > spec< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > gty< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [0].< / span > < span class = "element-syntax" > multiplicity< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > }< / span >
< / pre >
< p class = "commentary firstcommentary" > < a id = "SP5" class = "paragraph-anchor" > < / a > < b > § 5. < / b > The behaviour of this sorting function is documented in the discussion
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of CGL sorting in < a href = "5-cgl.html" class = "internal" > Command Grammar Lines< / a > .
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< / p >
< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > DeterminationTypes::must_precede< / span > < button class = "popup" onclick = "togglePopup('usagePopup8')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup8" > Usage of < span class = "code-font" > < span class = "function-syntax" > DeterminationTypes::must_precede< / span > < / span > :< br / > Command Grammar Lines - < a href = "5-cgl.html#SP19_7" > § 19.7< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > determination_type< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > gty1< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > determination_type< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > gty2< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > gty1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > ) < (< / span > < span class = "identifier-syntax" > gty2< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > )) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > TRUE< / 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" > gty1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > ) > (< / span > < span class = "identifier-syntax" > gty2< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > )) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > for< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > =0; < / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > < < / span > < span class = "constant-syntax" > MAX_DETERMINATION_TYPE_TERMS< / span > < span class = "plain-syntax" > ; < / span > < span class = "identifier-syntax" > t< / 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" > gty1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > no_values_described< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > ) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > NOT_APPLICABLE< / 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" > cs< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > Specifications::compare_specificity< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > gty1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [< / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > ].< / span > < span class = "element-syntax" > what< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > gty2< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [< / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > ].< / span > < span class = "element-syntax" > what< / 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" > cs< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > 1< / span > < span class = "plain-syntax" > ) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > TRUE< / 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" > cs< / span > < span class = "plain-syntax" > == -1) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > FALSE< / 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" > gty1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [< / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > ].< / span > < span class = "element-syntax" > multiplicity< / span > < span class = "plain-syntax" > ) & & (< / span > < span class = "identifier-syntax" > gty2< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [< / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > ].< / span > < span class = "element-syntax" > multiplicity< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > FALSE< / 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" > FALSE< / 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" > gty1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [< / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > ].< / span > < span class = "element-syntax" > multiplicity< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > FALSE< / span > < span class = "plain-syntax" > ) & & (< / span > < span class = "identifier-syntax" > gty2< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > term< / span > < span class = "plain-syntax" > [< / span > < span class = "identifier-syntax" > t< / span > < span class = "plain-syntax" > ].< / span > < span class = "element-syntax" > multiplicity< / 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" > TRUE< / 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 > < span class = "identifier-syntax" > NOT_APPLICABLE< / 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 = "5-cgt.html" > ❮ < / a > < / li > < li class = "progresschapter" > < a href = "P-wtmd.html" > P< / a > < / li > < li class = "progresschapter" > < a href = "1-im.html" > 1< / a > < / li > < li class = "progresschapter" > < a href = "2-bd.html" > 2< / a > < / li > < li class = "progresschapter" > < a href = "3-sm.html" > 3< / a > < / li > < li class = "progresschapter" > < a href = "4-ap.html" > 4< / a > < / li > < li class = "progresscurrentchapter" > 5< / li > < li class = "progresssection" > < a href = "5-pp.html" > pp< / a > < / li > < li class = "progresssection" > < a href = "5-us.html" > us< / a > < / li > < li class = "progresssection" > < a href = "5-cg.html" > cg< / a > < / li > < li class = "progresssection" > < a href = "5-cgl.html" > cgl< / a > < / li > < li class = "progresssection" > < a href = "5-cgt.html" > cgt< / a > < / li > < li class = "progresscurrent" > dt< / li > < li class = "progresssection" > < a href = "5-pv.html" > pv< / a > < / li > < li class = "progresssection" > < a href = "5-ts.html" > ts< / a > < / li > < li class = "progresschapter" > < a href = "6-dlg.html" > 6< / a > < / li > < li class = "progressnext" > < a href = "5-pv.html" > ❯ < / a > < / li > < / ul > < / div >
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< / nav > <!-- End of weave -->
< / main >
< / body >
< / html >