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<!--Weave of '15/ep' generated by 7-->
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<ul class="crumbs"><li><a href="../webs.html">★</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><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="#SP1">§1. A design choice</a></li><li><a href="#SP3">§3. Requesting new named properties</a></li><li><a href="#SP4">§4. Requesting new nameless properties</a></li><li><a href="#SP5">§5. Initialising details</a></li><li><a href="#SP9">§9. Assertion</a></li><li><a href="#SP10">§10. Compilation</a></li><li><a href="#SP12">§12. Either/or properties as adjectives</a></li></ul><hr class="tocbar">
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<p class="inwebparagraph"><a id="SP1"></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="inwebparagraph">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="inwebparagraph">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 <code class="display"><span class="extract">property</span></code>
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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 <code class="display"><span class="extract">property</span></code> 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="inwebparagraph"><a id="SP2"></a><b>§2. </b>The rule, therefore, is:
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</p>
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<p class="inwebparagraph"></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 <code class="display"><span class="extract">property</span></code> structure. We call these a "pair".
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</li></ul>
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<ul class="items"><li>(b) Within a pair, the <code class="display"><span class="extract">negation</span></code> 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></ul>
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<ul class="items"><li>(c) Exactly one member of the pair has <code class="display"><span class="extract">stored_in_negation</span></code> 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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<code class="display"><span class="extract">stored_in_negation</span></code> set.
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</li></ul>
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<ul class="items"><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 <code class="display"><span class="extract">negation</span></code> field is <code class="display"><span class="extract">NULL</span></code>,
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and <code class="display"><span class="extract">stored_in_negation</span></code> is clear.
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</li></ul>
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<p class="inwebparagraph"><a id="SP3"></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="display">
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<span class="reserved">property</span><span class="plain"> *</span><span class="functiontext">Properties::EitherOr::obtain</span><span class="plain">(</span><span class="identifier">wording</span><span class="plain"> </span><span class="identifier">W</span><span class="plain">, </span><span class="reserved">inference_subject</span><span class="plain"> *</span><span class="identifier">infs</span><span class="plain">) {</span>
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<span class="reserved">if</span><span class="plain"> (<</span><span class="identifier">k</span><span class="plain">-</span><span class="identifier">kind</span><span class="plain">>(</span><span class="identifier">W</span><span class="plain">)) {</span>
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<span class="identifier">Problems::Issue::sentence_problem</span><span class="plain">(</span><span class="identifier">_p_</span><span class="plain">(</span><span class="identifier">PM_KindAdjectiveClash</span><span class="plain">),</span>
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<span class="string">"this tries to create a new either/or adjective with the same name "</span>
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<span class="string">"as an existing kind"</span><span class="plain">,</span>
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<span class="string">"which isn't allowed. For example, 'A hopper can be a container.' is "</span>
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<span class="string">"not allowed because something either is, or is not, a 'container', "</span>
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<span class="string">"and that can never change during play. 'Container' is a kind, and "</span>
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<span class="string">"those are fixed. 'A hopper is a container' would be allowed, because "</span>
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<span class="string">"that makes a definite statement."</span><span class="plain">);</span>
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<span class="plain">}</span>
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<span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain"> = </span><span class="functiontext">Properties::obtain</span><span class="plain">(</span><span class="identifier">W</span><span class="plain">, </span><span class="identifier">FALSE</span><span class="plain">);</span>
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<span class="identifier">prn</span><span class="plain">-</span><span class="element">>either_or</span><span class="plain"> = </span><span class="identifier">TRUE</span><span class="plain">;</span>
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<span class="identifier">kind</span><span class="plain"> *</span><span class="identifier">K</span><span class="plain"> = </span><span class="functiontext">InferenceSubjects::domain</span><span class="plain">(</span><span class="identifier">infs</span><span class="plain">);</span>
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<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>adjectival_meaning_registered</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">)</span>
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<span class="functiontext">Properties::EitherOr::create_adjective_from_property</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">, </span><span class="identifier">W</span><span class="plain">, </span><span class="identifier">K</span><span class="plain">);</span>
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<span class="reserved">else</span>
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<span class="functiontext">Properties::EitherOr::make_new_adjective_sense_from_property</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">, </span><span class="identifier">W</span><span class="plain">, </span><span class="identifier">K</span><span class="plain">);</span>
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<span class="reserved">return</span><span class="plain"> </span><span class="identifier">prn</span><span class="plain">;</span>
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<span class="plain">}</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">The function Properties::EitherOr::obtain is used in 9/pd (<a href="9-pd.html#SP5_9">§5.9</a>, <a href="9-pd.html#SP5_10">§5.10</a>).</p>
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<p class="inwebparagraph"><a id="SP4"></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="inwebparagraph">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="display">
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<span class="reserved">property</span><span class="plain"> *</span><span class="functiontext">Properties::EitherOr::new_nameless</span><span class="plain">(</span><span class="identifier">wchar_t</span><span class="plain"> *</span><span class="identifier">I6_form</span><span class="plain">) {</span>
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<span class="identifier">wording</span><span class="plain"> </span><span class="identifier">W</span><span class="plain"> = </span><span class="identifier">Feeds::feed_text</span><span class="plain">(</span><span class="identifier">I6_form</span><span class="plain">);</span>
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<span class="identifier">package_request</span><span class="plain"> *</span><span class="identifier">R</span><span class="plain"> = </span><span class="functiontext">Hierarchy::synoptic_package</span><span class="plain">(</span><span class="constant">PROPERTIES_HAP</span><span class="plain">);</span>
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<span class="identifier">inter_name</span><span class="plain"> *</span><span class="identifier">iname</span><span class="plain"> = </span><span class="functiontext">Hierarchy::make_iname_with_memo</span><span class="plain">(</span><span class="constant">PROPERTY_HL</span><span class="plain">, </span><span class="identifier">R</span><span class="plain">, </span><span class="identifier">W</span><span class="plain">);</span>
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<span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain"> = </span><span class="functiontext">Properties::create</span><span class="plain">(</span><span class="identifier">EMPTY_WORDING</span><span class="plain">, </span><span class="identifier">R</span><span class="plain">, </span><span class="identifier">iname</span><span class="plain">);</span>
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<span class="identifier">prn</span><span class="plain">-</span><span class="element">>either_or</span><span class="plain"> = </span><span class="identifier">TRUE</span><span class="plain">;</span>
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<span class="functiontext">Properties::exclude_from_index</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">);</span>
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<span class="functiontext">Properties::set_translation</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">, </span><span class="identifier">I6_form</span><span class="plain">);</span>
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<span class="functiontext">Properties::EitherOr::create_adjective_from_property</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">, </span><span class="identifier">EMPTY_WORDING</span><span class="plain">, </span><span class="identifier">K_object</span><span class="plain">);</span>
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<span class="identifier">prn</span><span class="plain">-</span><span class="element">>run_time_only</span><span class="plain"> = </span><span class="identifier">TRUE</span><span class="plain">;</span>
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<span class="reserved">return</span><span class="plain"> </span><span class="identifier">prn</span><span class="plain">;</span>
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<span class="plain">}</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">The function Properties::EitherOr::new_nameless appears nowhere else.</p>
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<p class="inwebparagraph"><a id="SP5"></a><b>§5. Initialising details. </b></p>
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<pre class="display">
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<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Properties::EitherOr::initialise</span><span class="plain">(</span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">) {</span>
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<span class="identifier">prn</span><span class="plain">-</span><span class="element">>negation</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
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<span class="identifier">prn</span><span class="plain">-</span><span class="element">>stored_in_negation</span><span class="plain"> = </span><span class="identifier">FALSE</span><span class="plain">;</span>
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<span class="identifier">prn</span><span class="plain">-</span><span class="element">>implemented_as_attribute</span><span class="plain"> = </span><span class="identifier">NOT_APPLICABLE</span><span class="plain">;</span>
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<span class="identifier">prn</span><span class="plain">-</span><span class="element">>adjectival_meaning_registered</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
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<span class="identifier">prn</span><span class="plain">-</span><span class="element">>adjectival_phrase_registered</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
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<span class="plain">#</span><span class="identifier">ifdef</span><span class="plain"> </span><span class="identifier">IF_MODULE</span>
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<span class="identifier">prn</span><span class="plain">-</span><span class="element">>eo_parsing_grammar</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
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<span class="plain">#</span><span class="identifier">endif</span>
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<span class="plain">}</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">The function Properties::EitherOr::initialise is used in 15/pr (<a href="15-pr.html#SP5_3">§5.3</a>).</p>
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<p class="inwebparagraph"><a id="SP6"></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="display">
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<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Properties::EitherOr::make_negations</span><span class="plain">(</span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">, </span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">neg</span><span class="plain">) {</span>
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<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">prn</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) || (</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>either_or</span><span class="plain"> == </span><span class="identifier">FALSE</span><span class="plain">)) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"non-EO property"</span><span class="plain">);</span>
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<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">neg</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) || (</span><span class="identifier">neg</span><span class="plain">-</span><span class="element">>either_or</span><span class="plain"> == </span><span class="identifier">FALSE</span><span class="plain">)) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"non-EO property"</span><span class="plain">);</span>
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<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>negation</span><span class="plain">) || (</span><span class="identifier">neg</span><span class="plain">-</span><span class="element">>negation</span><span class="plain">)) {</span>
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<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>negation</span><span class="plain"> != </span><span class="identifier">neg</span><span class="plain">) || (</span><span class="identifier">neg</span><span class="plain">-</span><span class="element">>negation</span><span class="plain"> != </span><span class="identifier">prn</span><span class="plain">)) {</span>
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<span class="identifier">Problems::quote_source</span><span class="plain">(1, </span><span class="identifier">current_sentence</span><span class="plain">);</span>
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<span class="functiontext">Problems::quote_property</span><span class="plain">(2, </span><span class="identifier">prn</span><span class="plain">);</span>
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<span class="functiontext">Problems::quote_property</span><span class="plain">(3, </span><span class="identifier">neg</span><span class="plain">);</span>
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<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>negation</span><span class="plain">) {</span>
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<span class="functiontext">Problems::quote_property</span><span class="plain">(4, </span><span class="identifier">prn</span><span class="plain">);</span>
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<span class="functiontext">Problems::quote_property</span><span class="plain">(5, </span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>negation</span><span class="plain">);</span>
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<span class="plain">} </span><span class="reserved">else</span><span class="plain"> {</span>
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<span class="functiontext">Problems::quote_property</span><span class="plain">(4, </span><span class="identifier">neg</span><span class="plain">);</span>
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<span class="functiontext">Problems::quote_property</span><span class="plain">(5, </span><span class="identifier">neg</span><span class="plain">-</span><span class="element">>negation</span><span class="plain">);</span>
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<span class="plain">}</span>
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<span class="identifier">Problems::Issue::handmade_problem</span><span class="plain">(</span><span class="identifier">_p_</span><span class="plain">(</span><span class="identifier">PM_BrokenNegationPair</span><span class="plain">));</span>
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<span class="identifier">Problems::issue_problem_segment</span><span class="plain">(</span>
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<span class="string">"In %1, you proposed to set up the properties '%2' and '%3' as "</span>
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<span class="string">"opposites of each other. But I can't allow that, because '%4' "</span>
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<span class="string">"already has an opposite in another context ('%5')."</span><span class="plain">);</span>
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<span class="identifier">Problems::issue_problem_end</span><span class="plain">();</span>
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<span class="reserved">return</span><span class="plain">;</span>
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<span class="plain">}</span>
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<span class="reserved">return</span><span class="plain">;</span>
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<span class="plain">}</span>
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<span class="identifier">prn</span><span class="plain">-</span><span class="element">>negation</span><span class="plain"> = </span><span class="identifier">neg</span><span class="plain">; </span><span class="identifier">neg</span><span class="plain">-</span><span class="element">>negation</span><span class="plain"> = </span><span class="identifier">prn</span><span class="plain">;</span>
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<span class="functiontext">Properties::EitherOr::make_stored_in_negation</span><span class="plain">(</span><span class="identifier">neg</span><span class="plain">);</span>
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<span class="plain">}</span>
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<span class="reserved">property</span><span class="plain"> *</span><span class="functiontext">Properties::EitherOr::get_negation</span><span class="plain">(</span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">) {</span>
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<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">prn</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) || (</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>either_or</span><span class="plain"> == </span><span class="identifier">FALSE</span><span class="plain">)) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"non-EO property"</span><span class="plain">);</span>
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<span class="reserved">return</span><span class="plain"> </span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>negation</span><span class="plain">;</span>
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<span class="plain">}</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">The function Properties::EitherOr::make_negations is used in 9/pd (<a href="9-pd.html#SP5_10">§5.10</a>).</p>
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<p class="endnote">The function Properties::EitherOr::get_negation is used in <a href="#SP15_1">§15.1</a>, <a href="#SP15_2">§15.2</a>, <a href="#SP17">§17</a>, 9/imp (<a href="9-imp.html#SP6_1">§6.1</a>), 9/pd (<a href="9-pd.html#SP5_8_3">§5.8.3</a>), 14/rv (<a href="14-rv.html#SP24_3_1">§24.3.1</a>), 15/pr (<a href="15-pr.html#SP15">§15</a>, <a href="15-pr.html#SP21">§21</a>, <a href="15-pr.html#SP22_2">§22.2</a>, <a href="15-pr.html#SP23">§23</a>, <a href="15-pr.html#SP26">§26</a>, <a href="15-pr.html#SP27">§27</a>), 15/epv (<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>), 16/pp (<a href="16-pp.html#SP8">§8</a>), 16/in (<a href="16-in.html#SP14">§14</a>, <a href="16-in.html#SP16">§16</a>, <a href="16-in.html#SP17">§17</a>, <a href="16-in.html#SP19">§19</a>), 16/cmw (<a href="16-cmw.html#SP1_2_2">§1.2.2</a>).</p>
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<p class="inwebparagraph"><a id="SP7"></a><b>§7. </b></p>
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<pre class="display">
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<span class="reserved">int</span><span class="plain"> </span><span class="functiontext">Properties::EitherOr::stored_in_negation</span><span class="plain">(</span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">) {</span>
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<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">prn</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) || (</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>either_or</span><span class="plain"> == </span><span class="identifier">FALSE</span><span class="plain">)) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"non-EO property"</span><span class="plain">);</span>
|
|
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>stored_in_negation</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
|
|
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Properties::EitherOr::make_stored_in_negation</span><span class="plain">(</span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">) {</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">prn</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) || (</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>either_or</span><span class="plain"> == </span><span class="identifier">FALSE</span><span class="plain">)) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"non-EO property"</span><span class="plain">);</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>negation</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"singleton EO cannot store in negation"</span><span class="plain">);</span>
|
|
|
|
<span class="identifier">prn</span><span class="plain">-</span><span class="element">>stored_in_negation</span><span class="plain"> = </span><span class="identifier">TRUE</span><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>negation</span><span class="plain">) </span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>negation</span><span class="plain">-</span><span class="element">>stored_in_negation</span><span class="plain"> = </span><span class="identifier">FALSE</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::stored_in_negation is used in <a href="#SP15_1">§15.1</a>, <a href="#SP15_2">§15.2</a>, 14/rv (<a href="14-rv.html#SP24_3_1">§24.3.1</a>), 15/epv (<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>), 16/in (<a href="16-in.html#SP16">§16</a>).</p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::make_stored_in_negation is used in <a href="#SP6">§6</a>, 15/pr (<a href="15-pr.html#SP22_2">§22.2</a>).</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP8"></a><b>§8. </b>Miscellaneous details:
|
|
</p>
|
|
|
|
|
|
<pre class="display">
|
|
<span class="plain">#</span><span class="identifier">ifdef</span><span class="plain"> </span><span class="identifier">IF_MODULE</span>
|
|
<span class="identifier">grammar_verb</span><span class="plain"> *</span><span class="functiontext">Properties::EitherOr::get_parsing_grammar</span><span class="plain">(</span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">) {</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">prn</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) || (</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>either_or</span><span class="plain"> == </span><span class="identifier">FALSE</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
|
|
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>eo_parsing_grammar</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
|
|
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Properties::EitherOr::set_parsing_grammar</span><span class="plain">(</span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">, </span><span class="identifier">grammar_verb</span><span class="plain"> *</span><span class="identifier">gv</span><span class="plain">) {</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">prn</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) || (</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>either_or</span><span class="plain"> == </span><span class="identifier">FALSE</span><span class="plain">)) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"non-EO property"</span><span class="plain">);</span>
|
|
<span class="identifier">prn</span><span class="plain">-</span><span class="element">>eo_parsing_grammar</span><span class="plain"> = </span><span class="identifier">gv</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
<span class="plain">#</span><span class="identifier">endif</span>
|
|
|
|
<span class="identifier">adjectival_phrase</span><span class="plain"> *</span><span class="functiontext">Properties::EitherOr::get_aph</span><span class="plain">(</span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">) {</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">prn</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) || (</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>either_or</span><span class="plain"> == </span><span class="identifier">FALSE</span><span class="plain">)) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"non-EO property"</span><span class="plain">);</span>
|
|
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>adjectival_phrase_registered</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::get_parsing_grammar appears nowhere else.</p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::set_parsing_grammar appears nowhere else.</p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::get_aph is used in <a href="#SP9">§9</a>, 9/imp (<a href="9-imp.html#SP7_1_3">§7.1.3</a>), 11/pr (<a href="11-pr.html#SP35_2">§35.2</a>), 11/sc (<a href="11-sc.html#SP3_3">§3.3</a>).</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP9"></a><b>§9. Assertion. </b></p>
|
|
|
|
|
|
<pre class="display">
|
|
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Properties::EitherOr::assert</span><span class="plain">(</span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">,</span>
|
|
<span class="reserved">inference_subject</span><span class="plain"> *</span><span class="identifier">owner</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">parity</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">certainty</span><span class="plain">) {</span>
|
|
<span class="reserved">pcalc_prop</span><span class="plain"> *</span><span class="identifier">prop</span><span class="plain"> = </span><span class="functiontext">Calculus::Atoms::unary_PREDICATE_from_aph</span><span class="plain">(</span>
|
|
<span class="functiontext">Properties::EitherOr::get_aph</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">), (</span><span class="identifier">parity</span><span class="plain">)?</span><span class="identifier">FALSE</span><span class="plain">:</span><span class="identifier">TRUE</span><span class="plain">);</span>
|
|
<span class="functiontext">Calculus::Propositions::Assert::assert_true_about</span><span class="plain">(</span><span class="identifier">prop</span><span class="plain">, </span><span class="identifier">owner</span><span class="plain">, </span><span class="identifier">certainty</span><span class="plain">);</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::assert appears nowhere else.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP10"></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="display">
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="functiontext">Properties::EitherOr::implemented_as_attribute</span><span class="plain">(</span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">) {</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">prn</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) || (</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>either_or</span><span class="plain"> == </span><span class="identifier">FALSE</span><span class="plain">)) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"non-EO property"</span><span class="plain">);</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>implemented_as_attribute</span><span class="plain"> == </span><span class="identifier">NOT_APPLICABLE</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">TRUE</span><span class="plain">;</span>
|
|
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>implemented_as_attribute</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
|
|
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Properties::EitherOr::implement_as_attribute</span><span class="plain">(</span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">state</span><span class="plain">) {</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">prn</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) || (</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>either_or</span><span class="plain"> == </span><span class="identifier">FALSE</span><span class="plain">)) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"non-EO property"</span><span class="plain">);</span>
|
|
<span class="identifier">prn</span><span class="plain">-</span><span class="element">>implemented_as_attribute</span><span class="plain"> = </span><span class="identifier">state</span><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>negation</span><span class="plain">) </span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>negation</span><span class="plain">-</span><span class="element">>implemented_as_attribute</span><span class="plain"> = </span><span class="identifier">state</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::implemented_as_attribute is used in 15/pr (<a href="15-pr.html#SP27">§27</a>), 15/epv (<a href="15-epv.html#SP2_1">§2.1</a>, <a href="15-epv.html#SP4">§4</a>).</p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::implement_as_attribute is used in 15/epv (<a href="15-epv.html#SP3">§3</a>).</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP11"></a><b>§11. </b>Otherwise, each either/or property is stored as either <code class="display"><span class="extract">true</span></code> or <code class="display"><span class="extract">false</span></code>
|
|
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 <code class="display"><span class="extract">true</span></code> or <code class="display"><span class="extract">false</span></code> value.
|
|
</p>
|
|
|
|
<p class="inwebparagraph">(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="display">
|
|
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Properties::EitherOr::compile_value</span><span class="plain">(</span><span class="identifier">value_holster</span><span class="plain"> *</span><span class="identifier">VH</span><span class="plain">, </span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">val</span><span class="plain">) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">val</span><span class="plain">) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">Holsters::data_acceptable</span><span class="plain">(</span><span class="identifier">VH</span><span class="plain">))</span>
|
|
<span class="identifier">Holsters::holster_pair</span><span class="plain">(</span><span class="identifier">VH</span><span class="plain">, </span><span class="identifier">LITERAL_IVAL</span><span class="plain">, 1);</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">Holsters::data_acceptable</span><span class="plain">(</span><span class="identifier">VH</span><span class="plain">))</span>
|
|
<span class="identifier">Holsters::holster_pair</span><span class="plain">(</span><span class="identifier">VH</span><span class="plain">, </span><span class="identifier">LITERAL_IVAL</span><span class="plain">, 0);</span>
|
|
<span class="plain">}</span>
|
|
<span class="plain">}</span>
|
|
|
|
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Properties::EitherOr::compile_default_value</span><span class="plain">(</span><span class="identifier">value_holster</span><span class="plain"> *</span><span class="identifier">VH</span><span class="plain">, </span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">Holsters::data_acceptable</span><span class="plain">(</span><span class="identifier">VH</span><span class="plain">))</span>
|
|
<span class="identifier">Holsters::holster_pair</span><span class="plain">(</span><span class="identifier">VH</span><span class="plain">, </span><span class="identifier">LITERAL_IVAL</span><span class="plain">, 0);</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::compile_value is used in 15/pr (<a href="15-pr.html#SP26">§26</a>).</p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::compile_default_value is used in 15/pr (<a href="15-pr.html#SP25">§25</a>).</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP12"></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 <code class="display"><span class="extract">EORP_KADJ</span></code> kind, and the following
|
|
is called every time an either/or property is created, to create its matching
|
|
adjectival meaning:
|
|
</p>
|
|
|
|
|
|
<pre class="display">
|
|
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Properties::EitherOr::create_adjective_from_property</span><span class="plain">(</span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">, </span><span class="identifier">wording</span><span class="plain"> </span><span class="identifier">W</span><span class="plain">, </span><span class="identifier">kind</span><span class="plain"> *</span><span class="identifier">K</span><span class="plain">) {</span>
|
|
<span class="reserved">adjective_meaning</span><span class="plain"> *</span><span class="identifier">am</span><span class="plain"> =</span>
|
|
<span class="functiontext">Adjectives::Meanings::new</span><span class="plain">(</span><span class="constant">EORP_KADJ</span><span class="plain">, </span><span class="identifier">STORE_POINTER_property</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">), </span><span class="identifier">W</span><span class="plain">);</span>
|
|
<span class="functiontext">Adjectives::Meanings::declare</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">, </span><span class="identifier">W</span><span class="plain">, 1);</span>
|
|
<span class="functiontext">Adjectives::Meanings::set_domain_from_kind</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">, </span><span class="identifier">K</span><span class="plain">);</span>
|
|
<span class="identifier">prn</span><span class="plain">-</span><span class="element">>adjectival_phrase_registered</span><span class="plain"> = </span><span class="functiontext">Adjectives::Meanings::get_aph_from_am</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">);</span>
|
|
<span class="identifier">prn</span><span class="plain">-</span><span class="element">>adjectival_meaning_registered</span><span class="plain"> = </span><span class="identifier">am</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
|
|
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Properties::EitherOr::make_new_adjective_sense_from_property</span><span class="plain">(</span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">, </span><span class="identifier">wording</span><span class="plain"> </span><span class="identifier">W</span><span class="plain">, </span><span class="identifier">kind</span><span class="plain"> *</span><span class="identifier">K</span><span class="plain">) {</span>
|
|
<span class="identifier">adjectival_phrase</span><span class="plain"> *</span><span class="identifier">aph</span><span class="plain"> = </span><span class="identifier">prn</span><span class="plain">-</span><span class="element">>adjectival_phrase_registered</span><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Adjectives::Meanings::applicable_to</span><span class="plain">(</span><span class="identifier">aph</span><span class="plain">, </span><span class="identifier">K</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain">;</span>
|
|
<span class="reserved">adjective_meaning</span><span class="plain"> *</span><span class="identifier">am</span><span class="plain"> =</span>
|
|
<span class="functiontext">Adjectives::Meanings::new</span><span class="plain">(</span><span class="constant">EORP_KADJ</span><span class="plain">, </span><span class="identifier">STORE_POINTER_property</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">), </span><span class="identifier">W</span><span class="plain">);</span>
|
|
<span class="functiontext">Adjectives::Meanings::declare</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">, </span><span class="identifier">W</span><span class="plain">, 2);</span>
|
|
<span class="functiontext">Adjectives::Meanings::set_domain_from_kind</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">, </span><span class="identifier">K</span><span class="plain">);</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::create_adjective_from_property is used in <a href="#SP3">§3</a>, <a href="#SP4">§4</a>.</p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::make_new_adjective_sense_from_property is used in <a href="#SP3">§3</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP13"></a><b>§13. </b>And here are the methods which define <code class="display"><span class="extract">EORP</span></code> adjectives. They arise other
|
|
than by parsing, as we've seen, so:
|
|
</p>
|
|
|
|
|
|
<pre class="display">
|
|
<span class="reserved">adjective_meaning</span><span class="plain"> *</span><span class="functiontext">Properties::EitherOr::ADJ_parse</span><span class="plain">(</span><span class="identifier">parse_node</span><span class="plain"> *</span><span class="identifier">q</span><span class="plain">,</span>
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">sense</span><span class="plain">, </span><span class="identifier">wording</span><span class="plain"> </span><span class="identifier">AW</span><span class="plain">, </span><span class="identifier">wording</span><span class="plain"> </span><span class="identifier">DNW</span><span class="plain">, </span><span class="identifier">wording</span><span class="plain"> </span><span class="identifier">CONW</span><span class="plain">, </span><span class="identifier">wording</span><span class="plain"> </span><span class="identifier">CALLW</span><span class="plain">) {</span>
|
|
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::ADJ_parse is used in 4/am (<a href="4-am.html#SP37">§37</a>).</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP14"></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="display">
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="functiontext">Properties::EitherOr::ADJ_compile</span><span class="plain">(</span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">T</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">emit_flag</span><span class="plain">, </span><span class="reserved">ph_stack_frame</span><span class="plain"> *</span><span class="identifier">phsf</span><span class="plain">) {</span>
|
|
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">FALSE</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::ADJ_compile is used in 4/am (<a href="4-am.html#SP39">§39</a>).</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP15"></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="display">
|
|
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Properties::EitherOr::ADJ_compiling_soon</span><span class="plain">(</span><span class="reserved">adjective_meaning</span><span class="plain"> *</span><span class="identifier">am</span><span class="plain">, </span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">T</span><span class="plain">) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">am</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"Unregistered adjectival either/or property in either/or atom"</span><span class="plain">);</span>
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|
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|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Adjectives::Meanings::get_ready_flag</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain">;</span>
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|
<span class="functiontext">Adjectives::Meanings::set_ready_flag</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">);</span>
|
|
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|
<span class="identifier">kind</span><span class="plain"> *</span><span class="identifier">K</span><span class="plain"> = </span><span class="functiontext">Adjectives::Meanings::get_domain</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">);</span>
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|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">Kinds::Compare::le</span><span class="plain">(</span><span class="identifier">K</span><span class="plain">, </span><span class="identifier">K_object</span><span class="plain">))</span>
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|
<<span class="cwebmacro">Set the schemata for an either/or property adjective with objects as domain</span> <span class="cwebmacronumber">15.1</span>>
|
|
<span class="reserved">else</span>
|
|
<<span class="cwebmacro">Set the schemata for an either/or property adjective with some other domain</span> <span class="cwebmacronumber">15.2</span>><span class="plain">;</span>
|
|
<span class="reserved">return</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::ADJ_compiling_soon is used in 4/am (<a href="4-am.html#SP38">§38</a>).</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP15_1"></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 <code class="display"><span class="extract">GProperty</span></code> and <code class="display"><span class="extract">WriteGProperty</span></code> —
|
|
which would work just as well, but more slowly.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Set the schemata for an either/or property adjective with objects as domain</span> <span class="cwebmacronumber">15.1</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Properties::EitherOr::stored_in_negation</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">)) {</span>
|
|
<span class="reserved">property</span><span class="plain"> *</span><span class="identifier">neg</span><span class="plain"> = </span><span class="functiontext">Properties::EitherOr::get_negation</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">);</span>
|
|
<span class="identifier">inter_name</span><span class="plain"> *</span><span class="identifier">identifier</span><span class="plain"> = </span><span class="functiontext">Properties::iname</span><span class="plain">(</span><span class="identifier">neg</span><span class="plain">);</span>
|
|
|
|
<span class="reserved">i6_schema</span><span class="plain"> *</span><span class="identifier">sch</span><span class="plain"> = </span><span class="functiontext">Adjectives::Meanings::set_i6_schema</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">, </span><span class="constant">TEST_ADJECTIVE_TASK</span><span class="plain">, </span><span class="identifier">FALSE</span><span class="plain">);</span>
|
|
<span class="functiontext">Calculus::Schemas::modify</span><span class="plain">(</span><span class="identifier">sch</span><span class="plain">, </span><span class="string">"GetEitherOrProperty(*1, %n) == false"</span><span class="plain">, </span><span class="identifier">identifier</span><span class="plain">);</span>
|
|
|
|
<span class="identifier">sch</span><span class="plain"> = </span><span class="functiontext">Adjectives::Meanings::set_i6_schema</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">, </span><span class="constant">NOW_ADJECTIVE_TRUE_TASK</span><span class="plain">, </span><span class="identifier">FALSE</span><span class="plain">);</span>
|
|
<span class="functiontext">Calculus::Schemas::modify</span><span class="plain">(</span><span class="identifier">sch</span><span class="plain">, </span><span class="string">"SetEitherOrProperty(*1, %n, true)"</span><span class="plain">, </span><span class="identifier">identifier</span><span class="plain">);</span>
|
|
|
|
<span class="identifier">sch</span><span class="plain"> = </span><span class="functiontext">Adjectives::Meanings::set_i6_schema</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">, </span><span class="constant">NOW_ADJECTIVE_FALSE_TASK</span><span class="plain">, </span><span class="identifier">FALSE</span><span class="plain">);</span>
|
|
<span class="functiontext">Calculus::Schemas::modify</span><span class="plain">(</span><span class="identifier">sch</span><span class="plain">, </span><span class="string">"SetEitherOrProperty(*1, %n, false)"</span><span class="plain">, </span><span class="identifier">identifier</span><span class="plain">);</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> {</span>
|
|
<span class="identifier">inter_name</span><span class="plain"> *</span><span class="identifier">identifier</span><span class="plain"> = </span><span class="functiontext">Properties::iname</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">);</span>
|
|
|
|
<span class="reserved">i6_schema</span><span class="plain"> *</span><span class="identifier">sch</span><span class="plain"> = </span><span class="functiontext">Adjectives::Meanings::set_i6_schema</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">, </span><span class="constant">TEST_ADJECTIVE_TASK</span><span class="plain">, </span><span class="identifier">FALSE</span><span class="plain">);</span>
|
|
<span class="functiontext">Calculus::Schemas::modify</span><span class="plain">(</span><span class="identifier">sch</span><span class="plain">, </span><span class="string">"GetEitherOrProperty(*1, %n)"</span><span class="plain">, </span><span class="identifier">identifier</span><span class="plain">);</span>
|
|
|
|
<span class="identifier">sch</span><span class="plain"> = </span><span class="functiontext">Adjectives::Meanings::set_i6_schema</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">, </span><span class="constant">NOW_ADJECTIVE_TRUE_TASK</span><span class="plain">, </span><span class="identifier">FALSE</span><span class="plain">);</span>
|
|
<span class="functiontext">Calculus::Schemas::modify</span><span class="plain">(</span><span class="identifier">sch</span><span class="plain">, </span><span class="string">"SetEitherOrProperty(*1, %n, false)"</span><span class="plain">, </span><span class="identifier">identifier</span><span class="plain">);</span>
|
|
|
|
<span class="identifier">sch</span><span class="plain"> = </span><span class="functiontext">Adjectives::Meanings::set_i6_schema</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">, </span><span class="constant">NOW_ADJECTIVE_FALSE_TASK</span><span class="plain">, </span><span class="identifier">FALSE</span><span class="plain">);</span>
|
|
<span class="functiontext">Calculus::Schemas::modify</span><span class="plain">(</span><span class="identifier">sch</span><span class="plain">, </span><span class="string">"SetEitherOrProperty(*1, %n, true)"</span><span class="plain">, </span><span class="identifier">identifier</span><span class="plain">);</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP15">§15</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP15_2"></a><b>§15.2. </b><code class="display">
|
|
<<span class="cwebmacrodefn">Set the schemata for an either/or property adjective with some other domain</span> <span class="cwebmacronumber">15.2</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Properties::EitherOr::stored_in_negation</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">)) {</span>
|
|
<span class="reserved">property</span><span class="plain"> *</span><span class="identifier">neg</span><span class="plain"> = </span><span class="functiontext">Properties::EitherOr::get_negation</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">);</span>
|
|
|
|
<span class="reserved">i6_schema</span><span class="plain"> *</span><span class="identifier">sch</span><span class="plain"> = </span><span class="functiontext">Adjectives::Meanings::set_i6_schema</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">, </span><span class="constant">TEST_ADJECTIVE_TASK</span><span class="plain">, </span><span class="identifier">FALSE</span><span class="plain">);</span>
|
|
<span class="functiontext">Calculus::Schemas::modify</span><span class="plain">(</span><span class="identifier">sch</span><span class="plain">, </span><span class="string">"GProperty(%k, *1, %n) == false"</span><span class="plain">, </span><span class="identifier">K</span><span class="plain">,</span>
|
|
<span class="functiontext">Properties::iname</span><span class="plain">(</span><span class="identifier">neg</span><span class="plain">));</span>
|
|
|
|
<span class="identifier">sch</span><span class="plain"> = </span><span class="functiontext">Adjectives::Meanings::set_i6_schema</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">, </span><span class="constant">NOW_ADJECTIVE_TRUE_TASK</span><span class="plain">, </span><span class="identifier">FALSE</span><span class="plain">);</span>
|
|
<span class="functiontext">Calculus::Schemas::modify</span><span class="plain">(</span><span class="identifier">sch</span><span class="plain">, </span><span class="string">"WriteGProperty(%k, *1, %n)"</span><span class="plain">, </span><span class="identifier">K</span><span class="plain">,</span>
|
|
<span class="functiontext">Properties::iname</span><span class="plain">(</span><span class="identifier">neg</span><span class="plain">));</span>
|
|
|
|
<span class="identifier">sch</span><span class="plain"> = </span><span class="functiontext">Adjectives::Meanings::set_i6_schema</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">, </span><span class="constant">NOW_ADJECTIVE_FALSE_TASK</span><span class="plain">, </span><span class="identifier">FALSE</span><span class="plain">);</span>
|
|
<span class="functiontext">Calculus::Schemas::modify</span><span class="plain">(</span><span class="identifier">sch</span><span class="plain">, </span><span class="string">"WriteGProperty(%k, *1, %n, true)"</span><span class="plain">, </span><span class="identifier">K</span><span class="plain">,</span>
|
|
<span class="functiontext">Properties::iname</span><span class="plain">(</span><span class="identifier">neg</span><span class="plain">));</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> {</span>
|
|
<span class="reserved">i6_schema</span><span class="plain"> *</span><span class="identifier">sch</span><span class="plain"> = </span><span class="functiontext">Adjectives::Meanings::set_i6_schema</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">, </span><span class="constant">TEST_ADJECTIVE_TASK</span><span class="plain">, </span><span class="identifier">FALSE</span><span class="plain">);</span>
|
|
<span class="functiontext">Calculus::Schemas::modify</span><span class="plain">(</span><span class="identifier">sch</span><span class="plain">, </span><span class="string">"GProperty(%k, *1, %n)"</span><span class="plain">, </span><span class="identifier">K</span><span class="plain">,</span>
|
|
<span class="functiontext">Properties::iname</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">));</span>
|
|
|
|
<span class="identifier">sch</span><span class="plain"> = </span><span class="functiontext">Adjectives::Meanings::set_i6_schema</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">, </span><span class="constant">NOW_ADJECTIVE_TRUE_TASK</span><span class="plain">, </span><span class="identifier">FALSE</span><span class="plain">);</span>
|
|
<span class="functiontext">Calculus::Schemas::modify</span><span class="plain">(</span><span class="identifier">sch</span><span class="plain">, </span><span class="string">"WriteGProperty(%k, *1, %n, true)"</span><span class="plain">, </span><span class="identifier">K</span><span class="plain">,</span>
|
|
<span class="functiontext">Properties::iname</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">));</span>
|
|
|
|
<span class="identifier">sch</span><span class="plain"> = </span><span class="functiontext">Adjectives::Meanings::set_i6_schema</span><span class="plain">(</span><span class="identifier">am</span><span class="plain">, </span><span class="constant">NOW_ADJECTIVE_FALSE_TASK</span><span class="plain">, </span><span class="identifier">FALSE</span><span class="plain">);</span>
|
|
<span class="functiontext">Calculus::Schemas::modify</span><span class="plain">(</span><span class="identifier">sch</span><span class="plain">, </span><span class="string">"WriteGProperty(%k, *1, %n)"</span><span class="plain">, </span><span class="identifier">K</span><span class="plain">,</span>
|
|
<span class="functiontext">Properties::iname</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">));</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP15">§15</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP16"></a><b>§16. </b>To assert an adjective like "open" is to draw an inference about its
|
|
property.
|
|
</p>
|
|
|
|
|
|
<pre class="display">
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="functiontext">Properties::EitherOr::ADJ_assert</span><span class="plain">(</span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">,</span>
|
|
<span class="reserved">inference_subject</span><span class="plain"> *</span><span class="identifier">infs_to_assert_on</span><span class="plain">, </span><span class="identifier">parse_node</span><span class="plain"> *</span><span class="identifier">val_to_assert_on</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">parity</span><span class="plain">) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">parity</span><span class="plain"> == </span><span class="identifier">FALSE</span><span class="plain">) </span><span class="functiontext">World::Inferences::draw_negated_property</span><span class="plain">(</span><span class="identifier">infs_to_assert_on</span><span class="plain">, </span><span class="identifier">prn</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
|
|
<span class="reserved">else</span><span class="plain"> </span><span class="functiontext">World::Inferences::draw_property</span><span class="plain">(</span><span class="identifier">infs_to_assert_on</span><span class="plain">, </span><span class="identifier">prn</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
|
|
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">TRUE</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::ADJ_assert is used in 4/am (<a href="4-am.html#SP40">§40</a>).</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP17"></a><b>§17. </b>And finally:
|
|
</p>
|
|
|
|
|
|
<pre class="display">
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="functiontext">Properties::EitherOr::ADJ_index</span><span class="plain">(</span><span class="identifier">OUTPUT_STREAM</span><span class="plain">, </span><span class="reserved">property</span><span class="plain"> *</span><span class="identifier">prn</span><span class="plain">) {</span>
|
|
<span class="reserved">property</span><span class="plain"> *</span><span class="identifier">neg</span><span class="plain"> = </span><span class="functiontext">Properties::EitherOr::get_negation</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">);</span>
|
|
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"either/or property"</span><span class="plain">);</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Properties::permission_list</span><span class="plain">(</span><span class="identifier">prn</span><span class="plain">)) {</span>
|
|
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">" of "</span><span class="plain">); </span><span class="functiontext">World::Permissions::index</span><span class="plain">(</span><span class="identifier">OUT</span><span class="plain">, </span><span class="identifier">prn</span><span class="plain">);</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">neg</span><span class="plain">) && (</span><span class="functiontext">Properties::permission_list</span><span class="plain">(</span><span class="identifier">neg</span><span class="plain">))) {</span>
|
|
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">" of "</span><span class="plain">); </span><span class="functiontext">World::Permissions::index</span><span class="plain">(</span><span class="identifier">OUT</span><span class="plain">, </span><span class="identifier">neg</span><span class="plain">);</span>
|
|
<span class="plain">}</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">neg</span><span class="plain">) </span><span class="identifier">WRITE</span><span class="plain">(</span><span class="string">", opposite of </i>%+W<i>"</span><span class="plain">, </span><span class="identifier">neg</span><span class="plain">-</span><span class="element">>name</span><span class="plain">);</span>
|
|
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">TRUE</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The function Properties::EitherOr::ADJ_index is used in 4/am (<a href="4-am.html#SP41">§41</a>).</p>
|
|
|
|
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|
|
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