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<!--Weave of 'Either-Or Properties' generated by Inweb-->
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<div class="breadcrumbs">
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<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../compiler.html">Inform7 Modules</a></li><li><a href="index.html">core</a></li><li><a href="index.html#15">Chapter 15: Properties</a></li><li><b>Either-Or Properties</b></li></ul></div>
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<p class="purpose">Properties which can either be present or not, but have no value attached.</p>
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<ul class="toc"><li><a href="15-ep.html#SP1">§1. A design choice</a></li><li><a href="15-ep.html#SP3">§3. Requesting new named properties</a></li><li><a href="15-ep.html#SP4">§4. Requesting new nameless properties</a></li><li><a href="15-ep.html#SP5">§5. Initialising details</a></li><li><a href="15-ep.html#SP9">§9. Assertion</a></li><li><a href="15-ep.html#SP10">§10. Compilation</a></li><li><a href="15-ep.html#SP12">§12. Either/or properties as adjectives</a></li></ul><hr class="tocbar">
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. A design choice. </b>A property name structure with the either/or flag set represents one which is
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true or false. It's not obvious what the best way to handle these properties
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would be. A traditional computer-science view would be that a property like
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"open" is really just another valued property, whose kind of value is
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"truth state" — that is, "true" or "false". The word "closed" would
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then be no property at all, only a sort of syntactic sugar for a particular
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way to initialise the "open" property.
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</p>
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<p class="commentary">But in natural language, there seems no reason why "open" should be somehow
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more real than "closed". Source text ought to regard them as linguistically
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the same, and might talk about "the closed property" just as readily as
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"the open property". It's true that at some low-level implementation level
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these two properties, "open" and "closed", are tied together, but
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otherwise they ought both to be just as valid.
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</p>
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<p class="commentary">The language is the same either way, but the compiler has to choose which of
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these tacks it will take in implementing either/or properties. The first
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approach involves messy higher-level code pretending that certain linguistic
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features are properties even when they don't map onto <span class="extract"><span class="extract-syntax">property</span></span>
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structures, which is bad; the second approach involves messy lower-level code
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coping with the fact that two different <span class="extract"><span class="extract-syntax">property</span></span> structures are somehow
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the same, which is also bad. In the end, we went with the second approach (but
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about every two years consider stripping it out and rewriting the other way,
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just the same).
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</p>
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<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. </b>The rule, therefore, is:
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</p>
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<ul class="items"><li>(a) If an either/or property has one named form for when it is present and
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another for when it is absent, both forms are considered either/or properties.
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Each has a <span class="extract"><span class="extract-syntax">property</span></span> structure. We call these a "pair".
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</li><li>(b) Within a pair, the <span class="extract"><span class="extract-syntax">negation</span></span> field of each member points to the other.
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Thus it points from the "open" structure to the "closed" one, and vice
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versa.
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</li><li>(c) Exactly one member of the pair has <span class="extract"><span class="extract-syntax">stored_in_negation</span></span> set. This one is
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the ghostly one not existing at run-time; for example, in the Standard Rules,
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"open" is the stored one and "closed" is the ghost, so "closed" has
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<span class="extract"><span class="extract-syntax">stored_in_negation</span></span> set.
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</li><li>(d) If an either/or property has no named form for when it is absent, it is
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a "singleton" and not a member of any pair. Its <span class="extract"><span class="extract-syntax">negation</span></span> field is <span class="extract"><span class="extract-syntax">NULL</span></span>,
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and <span class="extract"><span class="extract-syntax">stored_in_negation</span></span> is clear.
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</li></ul>
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<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>§3. Requesting new named properties. </b>This is how the either/or properties declared by the source text are made.
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="function-syntax">Properties::EitherOr::obtain</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">Properties::EitherOr::obtain</span></span>:<br/>New Property Requests - <a href="4-npr.html#SP5_9">§5.9</a>, <a href="4-npr.html#SP5_10">§5.10</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">W</span><span class="plain-syntax">, </span><span class="reserved-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">infs</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="function-syntax"><k-kind></span><span class="plain-syntax">(</span><span class="identifier-syntax">W</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><a href="1-wtc.html#SP6" class="function-link"><span class="function-syntax">Task::syntax_tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_KindAdjectiveClash</span><span class="plain-syntax">),</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"this tries to create a new either/or adjective with the same name "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"as an existing kind"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"which isn't allowed. For example, 'A hopper can be a container.' is "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"not allowed because something either is, or is not, a 'container', "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"and that can never change during play. 'Container' is a kind, and "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"those are fixed. 'A hopper is a container' would be allowed, because "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"that makes a definite statement."</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</span><span class="plain-syntax"> = </span><a href="15-pr.html#SP3" class="function-link"><span class="function-syntax">Properties::obtain</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">W</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">either_or</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</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><a href="16-is.html#SP20" class="function-link"><span class="function-syntax">InferenceSubjects::domain</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">infs</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">prn</span><span class="plain-syntax">-></span><span class="element-syntax">adjectival_meaning_registered</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><a href="15-ep.html#SP12" class="function-link"><span class="function-syntax">Properties::EitherOr::create_adjective_from_property</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">, </span><span class="identifier-syntax">W</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">else</span>
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<span class="plain-syntax"> </span><a href="15-ep.html#SP12" class="function-link"><span class="function-syntax">Properties::EitherOr::make_new_adjective_sense_from_property</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">, </span><span class="identifier-syntax">W</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</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">prn</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP4" class="paragraph-anchor"></a><b>§4. Requesting new nameless properties. </b>These are properties needed for implementation reasons by the template, and
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which are added to the model by plugins here inside Inform, but which have
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no existence at the source text level — and hence have no names.
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</p>
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<p class="commentary">Setting them up as adjectives may seem a little over the top, since they cannot
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be encountered in source text, but the world model will have to set these properties
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by asserting propositions to be true; and type-checking of those propositions
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relies on adjectival meanings.
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="function-syntax">Properties::EitherOr::new_nameless</span><span class="plain-syntax">(</span><span class="identifier-syntax">wchar_t</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I6_form</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">W</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Feeds::feed_C_string</span><span class="plain-syntax">(</span><span class="identifier-syntax">I6_form</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">package_request</span><span class="plain-syntax"> *</span><span class="identifier-syntax">R</span><span class="plain-syntax"> = </span><a href="27-hr.html#SP4" class="function-link"><span class="function-syntax">Hierarchy::synoptic_package</span></a><span class="plain-syntax">(</span><span class="constant-syntax">PROPERTIES_HAP</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">iname</span><span class="plain-syntax"> = </span><a href="27-hr.html#SP4" class="function-link"><span class="function-syntax">Hierarchy::make_iname_with_memo</span></a><span class="plain-syntax">(</span><span class="constant-syntax">PROPERTY_HL</span><span class="plain-syntax">, </span><span class="identifier-syntax">R</span><span class="plain-syntax">, </span><span class="identifier-syntax">W</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</span><span class="plain-syntax"> = </span><a href="15-pr.html#SP4" class="function-link"><span class="function-syntax">Properties::create</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">EMPTY_WORDING</span><span class="plain-syntax">, </span><span class="identifier-syntax">R</span><span class="plain-syntax">, </span><span class="identifier-syntax">iname</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">either_or</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><a href="15-pr.html#SP17" class="function-link"><span class="function-syntax">Properties::exclude_from_index</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="15-pr.html#SP20" class="function-link"><span class="function-syntax">Properties::set_translation</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">, </span><span class="identifier-syntax">I6_form</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="15-ep.html#SP12" class="function-link"><span class="function-syntax">Properties::EitherOr::create_adjective_from_property</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">, </span><span class="identifier-syntax">EMPTY_WORDING</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_object</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">run_time_only</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</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">prn</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>§5. Initialising details. </b></p>
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<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">Properties::EitherOr::initialise</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">Properties::EitherOr::initialise</span></span>:<br/>Properties - <a href="15-pr.html#SP4_3">§4.3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">negation</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">stored_in_negation</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">implemented_as_attribute</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NOT_APPLICABLE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">adjectival_meaning_registered</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">adjective_registered</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> #</span><span class="identifier-syntax">ifdef</span><span class="plain-syntax"> </span><span class="identifier-syntax">IF_MODULE</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">eo_parsing_grammar</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> #</span><span class="identifier-syntax">endif</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP6" class="paragraph-anchor"></a><b>§6. </b>When created, all properties start out as singletons; the following joins
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two together into a pair. It's allowed to rejoin an existing pair (either way
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around), but not to break one.
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Properties::EitherOr::make_negations</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">Properties::EitherOr::make_negations</span></span>:<br/>New Property Requests - <a href="4-npr.html#SP5_10">§5.10</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</span><span class="plain-syntax">, </span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">neg</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">prn</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">either_or</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"non-EO property"</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">neg</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">neg</span><span class="plain-syntax">-></span><span class="element-syntax">either_or</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"non-EO property"</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">prn</span><span class="plain-syntax">-></span><span class="element-syntax">negation</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">neg</span><span class="plain-syntax">-></span><span class="identifier-syntax">negation</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">prn</span><span class="plain-syntax">-></span><span class="element-syntax">negation</span><span class="plain-syntax"> != </span><span class="identifier-syntax">neg</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">neg</span><span class="plain-syntax">-></span><span class="element-syntax">negation</span><span class="plain-syntax"> != </span><span class="identifier-syntax">prn</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_source</span><span class="plain-syntax">(1, </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-sq.html#SP2" class="function-link"><span class="function-syntax">Problems::quote_property</span></a><span class="plain-syntax">(2, </span><span class="identifier-syntax">prn</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-sq.html#SP2" class="function-link"><span class="function-syntax">Problems::quote_property</span></a><span class="plain-syntax">(3, </span><span class="identifier-syntax">neg</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">prn</span><span class="plain-syntax">-></span><span class="element-syntax">negation</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="2-sq.html#SP2" class="function-link"><span class="function-syntax">Problems::quote_property</span></a><span class="plain-syntax">(4, </span><span class="identifier-syntax">prn</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-sq.html#SP2" class="function-link"><span class="function-syntax">Problems::quote_property</span></a><span class="plain-syntax">(5, </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">negation</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><a href="2-sq.html#SP2" class="function-link"><span class="function-syntax">Problems::quote_property</span></a><span class="plain-syntax">(4, </span><span class="identifier-syntax">neg</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-sq.html#SP2" class="function-link"><span class="function-syntax">Problems::quote_property</span></a><span class="plain-syntax">(5, </span><span class="identifier-syntax">neg</span><span class="plain-syntax">-></span><span class="element-syntax">negation</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::handmade_problem</span><span class="plain-syntax">(</span><a href="1-wtc.html#SP6" class="function-link"><span class="function-syntax">Task::syntax_tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_BrokenNegationPair</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_segment</span><span class="plain-syntax">(</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"In %1, you proposed to set up the properties '%2' and '%3' as "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"opposites of each other. But I can't allow that, because '%4' "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"already has an opposite in another context ('%5')."</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_end</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">return</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">negation</span><span class="plain-syntax"> = </span><span class="identifier-syntax">neg</span><span class="plain-syntax">; </span><span class="identifier-syntax">neg</span><span class="plain-syntax">-></span><span class="element-syntax">negation</span><span class="plain-syntax"> = </span><span class="identifier-syntax">prn</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><a href="15-ep.html#SP7" class="function-link"><span class="function-syntax">Properties::EitherOr::make_stored_in_negation</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">neg</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="function-syntax">Properties::EitherOr::get_negation</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">Properties::EitherOr::get_negation</span></span>:<br/><a href="15-ep.html#SP15_1">§15.1</a>, <a href="15-ep.html#SP15_2">§15.2</a>, <a href="15-ep.html#SP17">§17</a><br/>New Property Requests - <a href="4-npr.html#SP5_8_3">§5.8.3</a><br/>Implications - <a href="5-imp.html#SP5_1">§5.1</a><br/>RValues - <a href="14-rv.html#SP24_3_1">§24.3.1</a><br/>Properties - <a href="15-pr.html#SP14">§14</a>, <a href="15-pr.html#SP20">§20</a>, <a href="15-pr.html#SP21_2">§21.2</a>, <a href="15-pr.html#SP22">§22</a>, <a href="15-pr.html#SP25">§25</a>, <a href="15-pr.html#SP26">§26</a><br/>Emit Property Values - <a href="15-epv.html#SP2">§2</a>, <a href="15-epv.html#SP2_1">§2.1</a>, <a href="15-epv.html#SP4">§4</a><br/>Property Permissions - <a href="16-pp.html#SP7">§7</a><br/>Inferences - <a href="16-in.html#SP13">§13</a>, <a href="16-in.html#SP15">§15</a>, <a href="16-in.html#SP16">§16</a>, <a href="16-in.html#SP18">§18</a><br/>Complete Model World - <a href="16-cmw.html#SP1_2_2">§1.2.2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</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">prn</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">either_or</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"non-EO property"</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">prn</span><span class="plain-syntax">-></span><span class="element-syntax">negation</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>§7. </b></p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">Properties::EitherOr::stored_in_negation</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">Properties::EitherOr::stored_in_negation</span></span>:<br/><a href="15-ep.html#SP15_1">§15.1</a>, <a href="15-ep.html#SP15_2">§15.2</a><br/>RValues - <a href="14-rv.html#SP24_3_1">§24.3.1</a><br/>Emit Property Values - <a href="15-epv.html#SP2">§2</a>, <a href="15-epv.html#SP2_1">§2.1</a>, <a href="15-epv.html#SP3">§3</a>, <a href="15-epv.html#SP4">§4</a><br/>Inferences - <a href="16-in.html#SP15">§15</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</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">prn</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">either_or</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"non-EO property"</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">prn</span><span class="plain-syntax">-></span><span class="element-syntax">stored_in_negation</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Properties::EitherOr::make_stored_in_negation</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">Properties::EitherOr::make_stored_in_negation</span></span>:<br/><a href="15-ep.html#SP6">§6</a><br/>Properties - <a href="15-pr.html#SP21_2">§21.2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</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">prn</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">either_or</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"non-EO property"</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">prn</span><span class="plain-syntax">-></span><span class="element-syntax">negation</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">"singleton EO cannot store in negation"</span><span class="plain-syntax">);</span>
|
|
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">stored_in_negation</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">prn</span><span class="plain-syntax">-></span><span class="element-syntax">negation</span><span class="plain-syntax">) </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">negation</span><span class="plain-syntax">-></span><span class="element-syntax">stored_in_negation</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP8" class="paragraph-anchor"></a><b>§8. </b>Miscellaneous details:
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<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="identifier-syntax">grammar_verb</span><span class="plain-syntax"> *</span><span class="function-syntax">Properties::EitherOr::get_parsing_grammar</span><span class="plain-syntax">(</span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</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">prn</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">either_or</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</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><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">eo_parsing_grammar</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Properties::EitherOr::set_parsing_grammar</span><span class="plain-syntax">(</span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</span><span class="plain-syntax">, </span><span class="identifier-syntax">grammar_verb</span><span class="plain-syntax"> *</span><span class="identifier-syntax">gv</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">prn</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">either_or</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"non-EO property"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">eo_parsing_grammar</span><span class="plain-syntax"> = </span><span class="identifier-syntax">gv</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
<span class="plain-syntax">#</span><span class="identifier-syntax">endif</span>
|
|
|
|
<span class="identifier-syntax">adjective</span><span class="plain-syntax"> *</span><span class="function-syntax">Properties::EitherOr::get_aph</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">Properties::EitherOr::get_aph</span></span>:<br/><a href="15-ep.html#SP9">§9</a><br/>Implications - <a href="5-imp.html#SP6_1_3">§6.1.3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</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">prn</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">either_or</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"non-EO property"</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">prn</span><span class="plain-syntax">-></span><span class="element-syntax">adjective_registered</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP9" class="paragraph-anchor"></a><b>§9. Assertion. </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">Properties::EitherOr::assert</span><span class="plain-syntax">(</span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">parity</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">certainty</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">pcalc_prop</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prop</span><span class="plain-syntax"> = </span><span class="identifier-syntax">AdjectivalPredicates::new_atom_on_x</span><span class="plain-syntax">(</span>
|
|
<span class="plain-syntax"> </span><a href="15-ep.html#SP8" class="function-link"><span class="function-syntax">Properties::EitherOr::get_aph</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">), (</span><span class="identifier-syntax">parity</span><span class="plain-syntax">)?</span><span class="identifier-syntax">FALSE:TRUE</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="12-ap.html#SP4" class="function-link"><span class="function-syntax">Propositions::Assert::assert_true_about</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prop</span><span class="plain-syntax">, </span><span class="identifier-syntax">owner</span><span class="plain-syntax">, </span><span class="identifier-syntax">certainty</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP10" class="paragraph-anchor"></a><b>§10. Compilation. </b>Inform 6 provides "attributes" as a faster-access, more memory-efficient
|
|
form of object properties, stored at run-time in a bitmap rather than as
|
|
key-value pairs in a small dictionary. Because the bitmap is inflexibly sized,
|
|
only some of our either/or properties will be able to make use of it. See
|
|
"Properties of Objects" for how these are chosen; the following simply
|
|
keep a flag recording the outcome.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">Properties::EitherOr::implemented_as_attribute</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">Properties::EitherOr::implemented_as_attribute</span></span>:<br/>Properties - <a href="15-pr.html#SP26">§26</a><br/>Emit Property Values - <a href="15-epv.html#SP2_1">§2.1</a>, <a href="15-epv.html#SP4">§4</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</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">prn</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">either_or</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"non-EO property"</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">prn</span><span class="plain-syntax">-></span><span class="element-syntax">implemented_as_attribute</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NOT_APPLICABLE</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">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">implemented_as_attribute</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Properties::EitherOr::implement_as_attribute</span><button class="popup" onclick="togglePopup('usagePopup9')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup9">Usage of <span class="code-font"><span class="function-syntax">Properties::EitherOr::implement_as_attribute</span></span>:<br/>Emit Property Values - <a href="15-epv.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">state</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">prn</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">either_or</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"non-EO property"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">implemented_as_attribute</span><span class="plain-syntax"> = </span><span class="identifier-syntax">state</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">prn</span><span class="plain-syntax">-></span><span class="element-syntax">negation</span><span class="plain-syntax">) </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">negation</span><span class="plain-syntax">-></span><span class="element-syntax">implemented_as_attribute</span><span class="plain-syntax"> = </span><span class="identifier-syntax">state</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP11" class="paragraph-anchor"></a><b>§11. </b>Otherwise, each either/or property is stored as either <span class="extract"><span class="extract-syntax">true</span></span> or <span class="extract"><span class="extract-syntax">false</span></span>
|
|
in a given cell of memory at run-time — wastefully since only 1 of the
|
|
16 or 32 bits in that memory word is used, but at least rapidly. The
|
|
following compiles this <span class="extract"><span class="extract-syntax">true</span></span> or <span class="extract"><span class="extract-syntax">false</span></span> value.
|
|
</p>
|
|
|
|
<p class="commentary">(Because of the way the attribute optimisation works, it's very important not to
|
|
change the strings of compiled code here without making a matching change in
|
|
"Properties of Objects".)
|
|
</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">Properties::EitherOr::compile_value</span><button class="popup" onclick="togglePopup('usagePopup10')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup10">Usage of <span class="code-font"><span class="function-syntax">Properties::EitherOr::compile_value</span></span>:<br/>Properties - <a href="15-pr.html#SP25">§25</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">value_holster</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VH</span><span class="plain-syntax">, </span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">val</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">val</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">Holsters::data_acceptable</span><span class="plain-syntax">(</span><span class="identifier-syntax">VH</span><span class="plain-syntax">))</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Holsters::holster_pair</span><span class="plain-syntax">(</span><span class="identifier-syntax">VH</span><span class="plain-syntax">, </span><span class="identifier-syntax">LITERAL_IVAL</span><span class="plain-syntax">, </span><span class="constant-syntax">1</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="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Holsters::data_acceptable</span><span class="plain-syntax">(</span><span class="identifier-syntax">VH</span><span class="plain-syntax">))</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Holsters::holster_pair</span><span class="plain-syntax">(</span><span class="identifier-syntax">VH</span><span class="plain-syntax">, </span><span class="identifier-syntax">LITERAL_IVAL</span><span class="plain-syntax">, </span><span class="constant-syntax">0</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Properties::EitherOr::compile_default_value</span><button class="popup" onclick="togglePopup('usagePopup11')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup11">Usage of <span class="code-font"><span class="function-syntax">Properties::EitherOr::compile_default_value</span></span>:<br/>Properties - <a href="15-pr.html#SP24">§24</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">value_holster</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VH</span><span class="plain-syntax">, </span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</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">Holsters::data_acceptable</span><span class="plain-syntax">(</span><span class="identifier-syntax">VH</span><span class="plain-syntax">))</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Holsters::holster_pair</span><span class="plain-syntax">(</span><span class="identifier-syntax">VH</span><span class="plain-syntax">, </span><span class="identifier-syntax">LITERAL_IVAL</span><span class="plain-syntax">, </span><span class="constant-syntax">0</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP12" class="paragraph-anchor"></a><b>§12. Either/or properties as adjectives. </b>What makes either/or properties linguistically interesting is their use as
|
|
adjectives: an open door, a transparent container. Adjectival
|
|
meanings arising in this way are of the <span class="extract"><span class="extract-syntax">EORP_KADJ</span></span> kind, and the following
|
|
is called every time an either/or property is created, to create its matching
|
|
adjectival meaning:
|
|
</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">Properties::EitherOr::create_adjective_from_property</span><button class="popup" onclick="togglePopup('usagePopup12')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup12">Usage of <span class="code-font"><span class="function-syntax">Properties::EitherOr::create_adjective_from_property</span></span>:<br/><a href="15-ep.html#SP3">§3</a>, <a href="15-ep.html#SP4">§4</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</span><span class="plain-syntax">, </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">W</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="reserved-syntax">adjective_meaning</span><span class="plain-syntax"> *</span><span class="identifier-syntax">am</span><span class="plain-syntax"> =</span>
|
|
<span class="plain-syntax"> </span><a href="7-am.html#SP18" class="function-link"><span class="function-syntax">Adjectives::Meanings::new</span></a><span class="plain-syntax">(</span><span class="constant-syntax">EORP_KADJ</span><span class="plain-syntax">, </span><span class="identifier-syntax">STORE_POINTER_property</span><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">), </span><span class="identifier-syntax">W</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="7-am.html#SP9" class="function-link"><span class="function-syntax">Adjectives::Meanings::declare</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">, </span><span class="identifier-syntax">W</span><span class="plain-syntax">, </span><span class="constant-syntax">1</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="7-am.html#SP24" class="function-link"><span class="function-syntax">Adjectives::Meanings::set_domain_from_kind</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</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">prn</span><span class="plain-syntax">-></span><span class="element-syntax">adjective_registered</span><span class="plain-syntax"> = </span><a href="7-am.html#SP10" class="function-link"><span class="function-syntax">Adjectives::Meanings::get_aph_from_am</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">adjectival_meaning_registered</span><span class="plain-syntax"> = </span><span class="identifier-syntax">am</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Properties::EitherOr::make_new_adjective_sense_from_property</span><button class="popup" onclick="togglePopup('usagePopup13')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup13">Usage of <span class="code-font"><span class="function-syntax">Properties::EitherOr::make_new_adjective_sense_from_property</span></span>:<br/><a href="15-ep.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</span><span class="plain-syntax">, </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">W</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">adjective</span><span class="plain-syntax"> *</span><span class="identifier-syntax">aph</span><span class="plain-syntax"> = </span><span class="identifier-syntax">prn</span><span class="plain-syntax">-></span><span class="element-syntax">adjective_registered</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="7-am.html#SP12" class="function-link"><span class="function-syntax">Adjectives::Meanings::applicable_to</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">aph</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">adjective_meaning</span><span class="plain-syntax"> *</span><span class="identifier-syntax">am</span><span class="plain-syntax"> =</span>
|
|
<span class="plain-syntax"> </span><a href="7-am.html#SP18" class="function-link"><span class="function-syntax">Adjectives::Meanings::new</span></a><span class="plain-syntax">(</span><span class="constant-syntax">EORP_KADJ</span><span class="plain-syntax">, </span><span class="identifier-syntax">STORE_POINTER_property</span><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">), </span><span class="identifier-syntax">W</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="7-am.html#SP9" class="function-link"><span class="function-syntax">Adjectives::Meanings::declare</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">, </span><span class="identifier-syntax">W</span><span class="plain-syntax">, </span><span class="constant-syntax">2</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="7-am.html#SP24" class="function-link"><span class="function-syntax">Adjectives::Meanings::set_domain_from_kind</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP13" class="paragraph-anchor"></a><b>§13. </b>And here are the methods which define <span class="extract"><span class="extract-syntax">EORP</span></span> adjectives. They arise other
|
|
than by parsing, as we've seen, so:
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">adjective_meaning</span><span class="plain-syntax"> *</span><span class="function-syntax">Properties::EitherOr::ADJ_parse</span><button class="popup" onclick="togglePopup('usagePopup14')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup14">Usage of <span class="code-font"><span class="function-syntax">Properties::EitherOr::ADJ_parse</span></span>:<br/>Adjective Meanings - <a href="7-am.html#SP38">§38</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">q</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">sense</span><span class="plain-syntax">, </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">AW</span><span class="plain-syntax">, </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">DNW</span><span class="plain-syntax">, </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">CONW</span><span class="plain-syntax">, </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">CALLW</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>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP14" class="paragraph-anchor"></a><b>§14. </b>Compiling tests or assertions of these adjectives is easy, because it just
|
|
means using their schemata in the usual way...
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">Properties::EitherOr::ADJ_compile</span><button class="popup" onclick="togglePopup('usagePopup15')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup15">Usage of <span class="code-font"><span class="function-syntax">Properties::EitherOr::ADJ_compile</span></span>:<br/>Adjective Meanings - <a href="7-am.html#SP40">§40</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</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">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">emit_flag</span><span class="plain-syntax">, </span><span class="reserved-syntax">ph_stack_frame</span><span class="plain-syntax"> *</span><span class="identifier-syntax">phsf</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>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP15" class="paragraph-anchor"></a><b>§15. </b>...but writing those schemata is not so easy, partly because of the way
|
|
either/or properties may be paired, partly because of the attribute storage
|
|
optimisation applied to some but not all of them.
|
|
</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">Properties::EitherOr::ADJ_compiling_soon</span><button class="popup" onclick="togglePopup('usagePopup16')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup16">Usage of <span class="code-font"><span class="function-syntax">Properties::EitherOr::ADJ_compiling_soon</span></span>:<br/>Adjective Meanings - <a href="7-am.html#SP39">§39</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">adjective_meaning</span><span class="plain-syntax"> *</span><span class="identifier-syntax">am</span><span class="plain-syntax">, </span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</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">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">am</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">"Unregistered adjectival either/or property in either/or atom"</span><span class="plain-syntax">);</span>
|
|
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="7-am.html#SP33" class="function-link"><span class="function-syntax">Adjectives::Meanings::get_ready_flag</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><a href="7-am.html#SP33" class="function-link"><span class="function-syntax">Adjectives::Meanings::set_ready_flag</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">);</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><a href="7-am.html#SP25" class="function-link"><span class="function-syntax">Adjectives::Meanings::get_domain</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</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">Kinds::Behaviour::is_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">))</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="15-ep.html#SP15_1" class="named-paragraph-link"><span class="named-paragraph">Set the schemata for an either/or property adjective with objects as domain</span><span class="named-paragraph-number">15.1</span></a></span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="15-ep.html#SP15_2" class="named-paragraph-link"><span class="named-paragraph">Set the schemata for an either/or property adjective with some other domain</span><span class="named-paragraph-number">15.2</span></a></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>
|
|
<p class="commentary firstcommentary"><a id="SP15_1" class="paragraph-anchor"></a><b>§15.1. </b>The "objects" domain is not really very different, but it's the one used
|
|
overwhelmingly most often, so we will call the relevant routines directly rather
|
|
than accessing them via the unifying routines <span class="extract"><span class="extract-syntax">GProperty</span></span> and <span class="extract"><span class="extract-syntax">WriteGProperty</span></span> —
|
|
which would work just as well, but more slowly.
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Set the schemata for an either/or property adjective with objects as domain</span><span class="named-paragraph-number">15.1</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><a href="15-ep.html#SP7" class="function-link"><span class="function-syntax">Properties::EitherOr::stored_in_negation</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">neg</span><span class="plain-syntax"> = </span><a href="15-ep.html#SP6" class="function-link"><span class="function-syntax">Properties::EitherOr::get_negation</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">identifier</span><span class="plain-syntax"> = </span><a href="15-pr.html#SP26" class="function-link"><span class="function-syntax">Properties::iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">neg</span><span class="plain-syntax">);</span>
|
|
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">i6_schema</span><span class="plain-syntax"> *</span><span class="identifier-syntax">sch</span><span class="plain-syntax"> = </span><a href="7-am.html#SP29" class="function-link"><span class="function-syntax">Adjectives::Meanings::set_i6_schema</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">, </span><span class="constant-syntax">TEST_ADJECTIVE_TASK</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Calculus::Schemas::modify</span><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">, </span><span class="string-syntax">"GetEitherOrProperty(*1, %n) == false"</span><span class="plain-syntax">, </span><span class="identifier-syntax">identifier</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax"> = </span><a href="7-am.html#SP29" class="function-link"><span class="function-syntax">Adjectives::Meanings::set_i6_schema</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">, </span><span class="constant-syntax">NOW_ADJECTIVE_TRUE_TASK</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Calculus::Schemas::modify</span><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">, </span><span class="string-syntax">"SetEitherOrProperty(*1, %n, true)"</span><span class="plain-syntax">, </span><span class="identifier-syntax">identifier</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax"> = </span><a href="7-am.html#SP29" class="function-link"><span class="function-syntax">Adjectives::Meanings::set_i6_schema</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">, </span><span class="constant-syntax">NOW_ADJECTIVE_FALSE_TASK</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Calculus::Schemas::modify</span><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">, </span><span class="string-syntax">"SetEitherOrProperty(*1, %n, false)"</span><span class="plain-syntax">, </span><span class="identifier-syntax">identifier</span><span class="plain-syntax">);</span>
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<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">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">identifier</span><span class="plain-syntax"> = </span><a href="15-pr.html#SP26" class="function-link"><span class="function-syntax">Properties::iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">i6_schema</span><span class="plain-syntax"> *</span><span class="identifier-syntax">sch</span><span class="plain-syntax"> = </span><a href="7-am.html#SP29" class="function-link"><span class="function-syntax">Adjectives::Meanings::set_i6_schema</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">, </span><span class="constant-syntax">TEST_ADJECTIVE_TASK</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Calculus::Schemas::modify</span><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">, </span><span class="string-syntax">"GetEitherOrProperty(*1, %n)"</span><span class="plain-syntax">, </span><span class="identifier-syntax">identifier</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax"> = </span><a href="7-am.html#SP29" class="function-link"><span class="function-syntax">Adjectives::Meanings::set_i6_schema</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">, </span><span class="constant-syntax">NOW_ADJECTIVE_TRUE_TASK</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Calculus::Schemas::modify</span><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">, </span><span class="string-syntax">"SetEitherOrProperty(*1, %n, false)"</span><span class="plain-syntax">, </span><span class="identifier-syntax">identifier</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax"> = </span><a href="7-am.html#SP29" class="function-link"><span class="function-syntax">Adjectives::Meanings::set_i6_schema</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">, </span><span class="constant-syntax">NOW_ADJECTIVE_FALSE_TASK</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Calculus::Schemas::modify</span><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">, </span><span class="string-syntax">"SetEitherOrProperty(*1, %n, true)"</span><span class="plain-syntax">, </span><span class="identifier-syntax">identifier</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> }</span>
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</pre>
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<ul class="endnotetexts"><li>This code is used in <a href="15-ep.html#SP15">§15</a>.</li></ul>
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<p class="commentary firstcommentary"><a id="SP15_2" class="paragraph-anchor"></a><b>§15.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Set the schemata for an either/or property adjective with some other domain</span><span class="named-paragraph-number">15.2</span></span><span class="comment-syntax"> =</span>
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="15-ep.html#SP7" class="function-link"><span class="function-syntax">Properties::EitherOr::stored_in_negation</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">)) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">neg</span><span class="plain-syntax"> = </span><a href="15-ep.html#SP6" class="function-link"><span class="function-syntax">Properties::EitherOr::get_negation</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">i6_schema</span><span class="plain-syntax"> *</span><span class="identifier-syntax">sch</span><span class="plain-syntax"> = </span><a href="7-am.html#SP29" class="function-link"><span class="function-syntax">Adjectives::Meanings::set_i6_schema</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">, </span><span class="constant-syntax">TEST_ADJECTIVE_TASK</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Calculus::Schemas::modify</span><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">, </span><span class="string-syntax">"GProperty(%k, *1, %n) == false"</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><a href="15-pr.html#SP26" class="function-link"><span class="function-syntax">Properties::iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">neg</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax"> = </span><a href="7-am.html#SP29" class="function-link"><span class="function-syntax">Adjectives::Meanings::set_i6_schema</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">, </span><span class="constant-syntax">NOW_ADJECTIVE_TRUE_TASK</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Calculus::Schemas::modify</span><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">, </span><span class="string-syntax">"WriteGProperty(%k, *1, %n)"</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><a href="15-pr.html#SP26" class="function-link"><span class="function-syntax">Properties::iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">neg</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax"> = </span><a href="7-am.html#SP29" class="function-link"><span class="function-syntax">Adjectives::Meanings::set_i6_schema</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">, </span><span class="constant-syntax">NOW_ADJECTIVE_FALSE_TASK</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Calculus::Schemas::modify</span><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">, </span><span class="string-syntax">"WriteGProperty(%k, *1, %n, true)"</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><a href="15-pr.html#SP26" class="function-link"><span class="function-syntax">Properties::iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">neg</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">i6_schema</span><span class="plain-syntax"> *</span><span class="identifier-syntax">sch</span><span class="plain-syntax"> = </span><a href="7-am.html#SP29" class="function-link"><span class="function-syntax">Adjectives::Meanings::set_i6_schema</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">, </span><span class="constant-syntax">TEST_ADJECTIVE_TASK</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">Calculus::Schemas::modify</span><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">, </span><span class="string-syntax">"GProperty(%k, *1, %n)"</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><a href="15-pr.html#SP26" class="function-link"><span class="function-syntax">Properties::iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">));</span>
|
|
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<span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax"> = </span><a href="7-am.html#SP29" class="function-link"><span class="function-syntax">Adjectives::Meanings::set_i6_schema</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">, </span><span class="constant-syntax">NOW_ADJECTIVE_TRUE_TASK</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">Calculus::Schemas::modify</span><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">, </span><span class="string-syntax">"WriteGProperty(%k, *1, %n, true)"</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><a href="15-pr.html#SP26" class="function-link"><span class="function-syntax">Properties::iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">));</span>
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|
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<span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax"> = </span><a href="7-am.html#SP29" class="function-link"><span class="function-syntax">Adjectives::Meanings::set_i6_schema</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">am</span><span class="plain-syntax">, </span><span class="constant-syntax">NOW_ADJECTIVE_FALSE_TASK</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">Calculus::Schemas::modify</span><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">, </span><span class="string-syntax">"WriteGProperty(%k, *1, %n)"</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</span><span class="plain-syntax">,</span>
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|
<span class="plain-syntax"> </span><a href="15-pr.html#SP26" class="function-link"><span class="function-syntax">Properties::iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="15-ep.html#SP15">§15</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP16" class="paragraph-anchor"></a><b>§16. </b>To assert an adjective like "open" is to draw an inference about its
|
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property.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">Properties::EitherOr::ADJ_assert</span><button class="popup" onclick="togglePopup('usagePopup17')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup17">Usage of <span class="code-font"><span class="function-syntax">Properties::EitherOr::ADJ_assert</span></span>:<br/>Adjective Meanings - <a href="7-am.html#SP41">§41</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">infs_to_assert_on</span><span class="plain-syntax">, </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">val_to_assert_on</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">parity</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">parity</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) </span><a href="16-in.html#SP8" class="function-link"><span class="function-syntax">World::Inferences::draw_negated_property</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">infs_to_assert_on</span><span class="plain-syntax">, </span><span class="identifier-syntax">prn</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">else</span><span class="plain-syntax"> </span><a href="16-in.html#SP8" class="function-link"><span class="function-syntax">World::Inferences::draw_property</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">infs_to_assert_on</span><span class="plain-syntax">, </span><span class="identifier-syntax">prn</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">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP17" class="paragraph-anchor"></a><b>§17. </b>And finally:
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">Properties::EitherOr::ADJ_index</span><button class="popup" onclick="togglePopup('usagePopup18')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup18">Usage of <span class="code-font"><span class="function-syntax">Properties::EitherOr::ADJ_index</span></span>:<br/>Adjective Meanings - <a href="7-am.html#SP42">§42</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">neg</span><span class="plain-syntax"> = </span><a href="15-ep.html#SP6" class="function-link"><span class="function-syntax">Properties::EitherOr::get_negation</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"either/or property"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="15-pr.html#SP13" class="function-link"><span class="function-syntax">Properties::permission_list</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">" of "</span><span class="plain-syntax">); </span><a href="16-pp.html#SP10" class="function-link"><span class="function-syntax">World::Permissions::index</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">prn</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">neg</span><span class="plain-syntax">) && (</span><a href="15-pr.html#SP13" class="function-link"><span class="function-syntax">Properties::permission_list</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">neg</span><span class="plain-syntax">))) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">" of "</span><span class="plain-syntax">); </span><a href="16-pp.html#SP10" class="function-link"><span class="function-syntax">World::Permissions::index</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">neg</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">neg</span><span class="plain-syntax">) </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">", opposite of </i>%+W<i>"</span><span class="plain-syntax">, </span><span class="identifier-syntax">neg</span><span class="plain-syntax">-></span><span class="element-syntax">name</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>
|
|
</pre>
|
|
<nav role="progress"><div class="progresscontainer">
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