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<!--Weave of 'Property Inferences' 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="../inform7n.html">Inform7</a></li><li><a href="index.html">knowledge</a></li><li><a href="index.html#5">Chapter 5: Modelling</a></li><li><b>Property Inferences</b></li></ul></div>
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<p class="purpose">Inferences that a property of something is true, or has a particular value.</p>
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. </b>Property inferences say that the subject has a property, which can be
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either-or or valued.
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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">inference_family</span><span class="plain-syntax"> *</span><span class="identifier-syntax">property_inf</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">PropertyInferences::start</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">PropertyInferences::start</span></span>:<br/>Knowledge Module - <a href="1-km.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">property_inf</span><span class="plain-syntax"> = </span><a href="5-inf.html#SP10" class="function-link"><span class="function-syntax">Inferences::new_family</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"property_inf"</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">METHOD_ADD</span><span class="plain-syntax">(</span><span class="identifier-syntax">property_inf</span><span class="plain-syntax">, </span><span class="constant-syntax">LOG_DETAILS_INF_MTID</span><span class="plain-syntax">, </span><a href="5-pi.html#SP4" class="function-link"><span class="function-syntax">PropertyInferences::log_details</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">METHOD_ADD</span><span class="plain-syntax">(</span><span class="identifier-syntax">property_inf</span><span class="plain-syntax">, </span><span class="constant-syntax">COMPARE_INF_MTID</span><span class="plain-syntax">, </span><a href="5-pi.html#SP5" class="function-link"><span class="function-syntax">PropertyInferences::cmp</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">METHOD_ADD</span><span class="plain-syntax">(</span><span class="identifier-syntax">property_inf</span><span class="plain-syntax">, </span><span class="constant-syntax">EXPLAIN_CONTRADICTION_INF_MTID</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><a href="5-pi.html#SP6" class="function-link"><span class="function-syntax">PropertyInferences::explain_contradiction</span></a><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="SP2" class="paragraph-anchor"></a><b>§2. </b>Creation:
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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">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">property_inference_data</span><span class="plain-syntax"> {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">inferred_property</span><span class="plain-syntax">; </span><span class="comment-syntax"> property referred to</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">inferred_property_value</span><span class="plain-syntax">; </span><span class="comment-syntax"> and its value, if any</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">CLASS_DEFINITION</span>
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<span class="plain-syntax">} </span><span class="reserved-syntax">property_inference_data</span><span class="plain-syntax">;</span>
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<span class="reserved-syntax">inference</span><span class="plain-syntax"> *</span><span class="function-syntax">PropertyInferences::new</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">PropertyInferences::new</span></span>:<br/><a href="5-pi.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">subj</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><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">val</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="constant-syntax">PROTECTED_MODEL_PROCEDURE</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">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"null property inference"</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">property_inference_data</span><span class="plain-syntax"> *</span><span class="identifier-syntax">data</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">property_inference_data</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">data</span><span class="plain-syntax">-></span><span class="identifier-syntax">inferred_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">data</span><span class="plain-syntax">-></span><span class="identifier-syntax">inferred_property_value</span><span class="plain-syntax"> = </span><span class="identifier-syntax">val</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">c</span><span class="plain-syntax"> = </span><span class="identifier-syntax">prevailing_mood</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">c</span><span class="plain-syntax"> == </span><span class="identifier-syntax">UNKNOWN_CE</span><span class="plain-syntax">) </span><span class="identifier-syntax">c</span><span class="plain-syntax"> = </span><a href="4-is.html#SP20" class="function-link"><span class="function-syntax">InferenceSubjects::get_default_certainty</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">subj</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><a href="5-inf.html#SP2" class="function-link"><span class="function-syntax">Inferences::create_inference</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">property_inf</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">STORE_POINTER_property_inference_data</span><span class="plain-syntax">(</span><span class="identifier-syntax">data</span><span class="plain-syntax">), </span><span class="identifier-syntax">c</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>The structure property_inference_data is private to this section.</li></ul>
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<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>§3. </b>These in turn are used by:
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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">PropertyInferences::draw</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">PropertyInferences::draw</span></span>:<br/>Instances as Adjectives - <a href="2-iaa.html#SP3">§3</a><br/>Either-Or Property Adjectives - <a href="3-epa.html#SP3">§3</a><br/>Setting Property Relation - <a href="3-spr2.html#SP10">§10</a><br/>Measurement Adjectives - <a href="3-ma.html#SP4">§4</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">subj</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">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">val</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">inference</span><span class="plain-syntax"> *</span><span class="identifier-syntax">i</span><span class="plain-syntax"> = </span><a href="5-pi.html#SP2" class="function-link"><span class="function-syntax">PropertyInferences::new</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">subj</span><span class="plain-syntax">, </span><span class="identifier-syntax">prn</span><span class="plain-syntax">, </span><span class="identifier-syntax">val</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="5-inf.html#SP8" class="function-link"><span class="function-syntax">Inferences::join_inference</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">i</span><span class="plain-syntax">, </span><span class="identifier-syntax">subj</span><span class="plain-syntax">);</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">PropertyInferences::draw_negated</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">PropertyInferences::draw_negated</span></span>:<br/>Either-Or Property Adjectives - <a href="3-epa.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">subj</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">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">val</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">inference</span><span class="plain-syntax"> *</span><span class="identifier-syntax">i</span><span class="plain-syntax"> = </span><a href="5-pi.html#SP2" class="function-link"><span class="function-syntax">PropertyInferences::new</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">subj</span><span class="plain-syntax">, </span><span class="identifier-syntax">prn</span><span class="plain-syntax">, </span><span class="identifier-syntax">val</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">i</span><span class="plain-syntax">-></span><span class="element-syntax">certainty</span><span class="plain-syntax"> = -</span><span class="identifier-syntax">i</span><span class="plain-syntax">-></span><span class="element-syntax">certainty</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><a href="5-inf.html#SP8" class="function-link"><span class="function-syntax">Inferences::join_inference</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">i</span><span class="plain-syntax">, </span><span class="identifier-syntax">subj</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. </b>So now for the methods:
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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">PropertyInferences::log_details</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">PropertyInferences::log_details</span></span>:<br/><a href="5-pi.html#SP1">§1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inference_family</span><span class="plain-syntax"> *</span><span class="identifier-syntax">f</span><span class="plain-syntax">, </span><span class="reserved-syntax">inference</span><span class="plain-syntax"> *</span><span class="identifier-syntax">inf</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">property_inference_data</span><span class="plain-syntax"> *</span><span class="identifier-syntax">data</span><span class="plain-syntax"> = </span><span class="identifier-syntax">RETRIEVE_POINTER_property_inference_data</span><span class="plain-syntax">(</span><span class="identifier-syntax">inf</span><span class="plain-syntax">-></span><span class="element-syntax">data</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"(%W)"</span><span class="plain-syntax">, </span><span class="identifier-syntax">data</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property</span><span class="plain-syntax">-></span><span class="element-syntax">name</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">data</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property_value</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">":=$P"</span><span class="plain-syntax">, </span><span class="identifier-syntax">data</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property_value</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. </b>By convention, a pair of attached either/or properties which are negations of
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each other — say "open" and "closed" — are treated as if they were the
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same property but with different values.
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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">int</span><span class="plain-syntax"> </span><span class="function-syntax">PropertyInferences::cmp</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">PropertyInferences::cmp</span></span>:<br/><a href="5-pi.html#SP1">§1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inference_family</span><span class="plain-syntax"> *</span><span class="identifier-syntax">f</span><span class="plain-syntax">, </span><span class="reserved-syntax">inference</span><span class="plain-syntax"> *</span><span class="identifier-syntax">i1</span><span class="plain-syntax">, </span><span class="reserved-syntax">inference</span><span class="plain-syntax"> *</span><span class="identifier-syntax">i2</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">property_inference_data</span><span class="plain-syntax"> *</span><span class="identifier-syntax">data1</span><span class="plain-syntax"> = </span><span class="identifier-syntax">RETRIEVE_POINTER_property_inference_data</span><span class="plain-syntax">(</span><span class="identifier-syntax">i1</span><span class="plain-syntax">-></span><span class="element-syntax">data</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">property_inference_data</span><span class="plain-syntax"> *</span><span class="identifier-syntax">data2</span><span class="plain-syntax"> = </span><span class="identifier-syntax">RETRIEVE_POINTER_property_inference_data</span><span class="plain-syntax">(</span><span class="identifier-syntax">i2</span><span class="plain-syntax">-></span><span class="element-syntax">data</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">pr1</span><span class="plain-syntax"> = </span><span class="identifier-syntax">data1</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property</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">pr2</span><span class="plain-syntax"> = </span><span class="identifier-syntax">data2</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_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">pr1</span><span class="plain-syntax">) && (</span><a href="3-prp.html#SP13" class="function-link"><span class="function-syntax">Properties::is_either_or</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">pr1</span><span class="plain-syntax">)) &&</span>
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<span class="plain-syntax"> (</span><span class="identifier-syntax">pr2</span><span class="plain-syntax">) && (</span><a href="3-prp.html#SP13" class="function-link"><span class="function-syntax">Properties::is_either_or</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">pr2</span><span class="plain-syntax">)) &&</span>
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<span class="plain-syntax"> ((</span><span class="identifier-syntax">pr1</span><span class="plain-syntax"> == </span><a href="3-ep.html#SP6" class="function-link"><span class="function-syntax">EitherOrProperties::get_negation</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">pr2</span><span class="plain-syntax">)) ||</span>
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<span class="plain-syntax"> (</span><span class="identifier-syntax">pr2</span><span class="plain-syntax"> == </span><a href="3-ep.html#SP6" class="function-link"><span class="function-syntax">EitherOrProperties::get_negation</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">pr1</span><span class="plain-syntax">)))) </span><span class="identifier-syntax">pr2</span><span class="plain-syntax"> = </span><span class="identifier-syntax">pr1</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">c</span><span class="plain-syntax"> = </span><a href="5-inf.html#SP7" class="function-link"><span class="function-syntax">Inferences::measure_property</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">pr1</span><span class="plain-syntax">) - </span><a href="5-inf.html#SP7" class="function-link"><span class="function-syntax">Inferences::measure_property</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">pr2</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">c</span><span class="plain-syntax"> > </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">CI_DIFFER_IN_TOPIC</span><span class="plain-syntax">; </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">c</span><span class="plain-syntax"> < </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> -</span><span class="constant-syntax">CI_DIFFER_IN_TOPIC</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">c</span><span class="plain-syntax"> = </span><a href="5-inf.html#SP7" class="function-link"><span class="function-syntax">Inferences::measure_inf</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">i1</span><span class="plain-syntax">) - </span><a href="5-inf.html#SP7" class="function-link"><span class="function-syntax">Inferences::measure_inf</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">i2</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">val1</span><span class="plain-syntax"> = </span><span class="identifier-syntax">data1</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property_value</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">val2</span><span class="plain-syntax"> = </span><span class="identifier-syntax">data2</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property_value</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">data1</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property</span><span class="plain-syntax"> != </span><span class="identifier-syntax">data2</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property</span><span class="plain-syntax">) || </span><span class="comment-syntax"> i.e. if an either-or pair</span>
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<span class="plain-syntax"> ((</span><span class="identifier-syntax">val1</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">val2</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">Rvalues::compare_CONSTANT</span><span class="plain-syntax">(</span><span class="identifier-syntax">val1</span><span class="plain-syntax">, </span><span class="identifier-syntax">val2</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="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">M</span><span class="plain-syntax"> = </span><span class="constant-syntax">CI_DIFFER_IN_CONTENT</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><a href="3-prp.html#SP13" class="function-link"><span class="function-syntax">Properties::is_either_or</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">pr1</span><span class="plain-syntax">)) </span><span class="identifier-syntax">M</span><span class="plain-syntax"> = </span><span class="constant-syntax">CI_DIFFER_IN_BOOLEAN_CONTENT</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">c</span><span class="plain-syntax"> > </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">M</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">c</span><span class="plain-syntax"> < </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> -</span><span class="identifier-syntax">M</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">c</span><span class="plain-syntax"> > </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">CI_DIFFER_IN_COPY_ONLY</span><span class="plain-syntax">; </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">c</span><span class="plain-syntax"> < </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> -</span><span class="constant-syntax">CI_DIFFER_IN_COPY_ONLY</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="constant-syntax">CI_IDENTICAL</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="SP6" class="paragraph-anchor"></a><b>§6. </b>A few properties get custom problem messages: initial value for a variable,
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and properties which store the state of certain relations.
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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">int</span><span class="plain-syntax"> </span><span class="function-syntax">PropertyInferences::explain_contradiction</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">PropertyInferences::explain_contradiction</span></span>:<br/><a href="5-pi.html#SP1">§1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inference_family</span><span class="plain-syntax"> *</span><span class="identifier-syntax">f</span><span class="plain-syntax">, </span><span class="reserved-syntax">inference</span><span class="plain-syntax"> *</span><span class="identifier-syntax">A</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">inference</span><span class="plain-syntax"> *</span><span class="identifier-syntax">B</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">similarity</span><span class="plain-syntax">, </span><span class="reserved-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">subj</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">property_inference_data</span><span class="plain-syntax"> *</span><span class="identifier-syntax">A_data</span><span class="plain-syntax"> = </span><span class="identifier-syntax">RETRIEVE_POINTER_property_inference_data</span><span class="plain-syntax">(</span><span class="identifier-syntax">A</span><span class="plain-syntax">-></span><span class="element-syntax">data</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">property_inference_data</span><span class="plain-syntax"> *</span><span class="identifier-syntax">B_data</span><span class="plain-syntax"> = </span><span class="identifier-syntax">RETRIEVE_POINTER_property_inference_data</span><span class="plain-syntax">(</span><span class="identifier-syntax">B</span><span class="plain-syntax">-></span><span class="element-syntax">data</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"A = $I\nB = $I\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">A</span><span class="plain-syntax">, </span><span class="identifier-syntax">B</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax"> = </span><span class="identifier-syntax">B</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_from</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">B_data</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property</span><span class="plain-syntax"> == </span><span class="identifier-syntax">P_variable_initial_value</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::two_sentences_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_VariableContradiction</span><span class="plain-syntax">),</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">A</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_from</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"this looks like a contradiction"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"because the initial value of this variable seems to be being set "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"in each of these sentences, but with a different outcome."</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="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="3-prp.html#SP13" class="function-link"><span class="function-syntax">Properties::is_value_property</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">B_data</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property</span><span class="plain-syntax">)) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">binary_predicate</span><span class="plain-syntax"> *</span><span class="identifier-syntax">bp</span><span class="plain-syntax"> =</span>
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<span class="plain-syntax"> </span><a href="3-vp.html#SP8" class="function-link"><span class="function-syntax">ValueProperties::get_stored_relation</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">B_data</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_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">bp</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">Wordings::match</span><span class="plain-syntax">(</span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">),</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">A</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_from</span><span class="plain-syntax">))) {</span>
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<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>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_relation</span><span class="plain-syntax">(3, </span><span class="identifier-syntax">bp</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_subject</span><span class="plain-syntax">(4, </span><span class="identifier-syntax">subj</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_spec</span><span class="plain-syntax">(5, </span><span class="identifier-syntax">B_data</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property_value</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_spec</span><span class="plain-syntax">(6, </span><span class="identifier-syntax">A_data</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property_value</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::handmade_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">Task::syntax_tree</span><span class="plain-syntax">(),</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_RelationContradiction2</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_segment</span><span class="plain-syntax">(</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"I'm finding a contradiction at the sentence %1, "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"because it means I can't set up %3. "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"On the one hand, %4 should relate to %5, but on the other "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"hand to %6, and this is a relation which doesn't allow "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"such clashes."</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_end</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">Problems::quote_source</span><span class="plain-syntax">(1, </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_source</span><span class="plain-syntax">(2, </span><span class="identifier-syntax">A</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_from</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_relation</span><span class="plain-syntax">(3, </span><span class="identifier-syntax">bp</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_subject</span><span class="plain-syntax">(4, </span><span class="identifier-syntax">subj</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_spec</span><span class="plain-syntax">(5, </span><span class="identifier-syntax">B_data</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property_value</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_spec</span><span class="plain-syntax">(6, </span><span class="identifier-syntax">A_data</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property_value</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::handmade_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">Task::syntax_tree</span><span class="plain-syntax">(),</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_RelationContradiction</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_segment</span><span class="plain-syntax">(</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"I'm finding a contradiction at the sentences %1 and %2, "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"because between them they set up rival versions of %3. "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"On the one hand, %4 should relate to %5, but on the other "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"hand to %6, and this is a relation which doesn't allow "</span>
|
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<span class="plain-syntax"> </span><span class="string-syntax">"such clashes."</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_end</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">return</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>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::two_sentences_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_PropertyContradiction</span><span class="plain-syntax">),</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">A</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_from</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"this looks like a contradiction"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"because the same property seems to be being set in each of these sentences, "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"but with a different outcome."</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">return</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>
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</pre>
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<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>§7. </b>Access functions.
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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">PropertyInferences::get_property</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">PropertyInferences::get_property</span></span>:<br/><a href="5-pi.html#SP9">§9</a>, <a href="5-pi.html#SP10">§10</a>, <a href="5-pi.html#SP12">§12</a>, <a href="5-pi.html#SP14">§14</a><br/>Nonlocal Variables - <a href="2-nv.html#SP11">§11</a><br/>Properties - <a href="3-prp.html#SP17">§17</a><br/>Variable Subjects - <a href="4-vs.html#SP2">§2</a><br/>Relation Subjects - <a href="4-rs.html#SP4">§4</a><br/>Indefinite Appearance - <a href="5-ia.html#SP1">§1</a>, <a href="5-ia.html#SP2">§2</a><br/>The Model World - <a href="5-tmw.html#SP4_1">§4.1</a>, <a href="5-tmw.html#SP4_2">§4.2</a>, <a href="5-tmw.html#SP4_2_1">§4.2.1</a><br/>The Naming Thicket - <a href="5-tnt.html#SP10">§10</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inference</span><span class="plain-syntax"> *</span><span class="identifier-syntax">i</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">i</span><span class="plain-syntax">-></span><span class="identifier-syntax">family</span><span class="plain-syntax"> != </span><span class="identifier-syntax">property_inf</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>
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<span class="plain-syntax"> </span><span class="reserved-syntax">property_inference_data</span><span class="plain-syntax"> *</span><span class="identifier-syntax">data</span><span class="plain-syntax"> = </span><span class="identifier-syntax">RETRIEVE_POINTER_property_inference_data</span><span class="plain-syntax">(</span><span class="identifier-syntax">i</span><span class="plain-syntax">-></span><span class="element-syntax">data</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">data</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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<span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="function-syntax">PropertyInferences::get_value</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">PropertyInferences::get_value</span></span>:<br/><a href="5-pi.html#SP12">§12</a>, <a href="5-pi.html#SP14">§14</a><br/>Properties - <a href="3-prp.html#SP17">§17</a><br/>Variable Subjects - <a href="4-vs.html#SP2">§2</a><br/>Relation Subjects - <a href="4-rs.html#SP4">§4</a><br/>Indefinite Appearance - <a href="5-ia.html#SP2">§2</a><br/>The Model World - <a href="5-tmw.html#SP4_2_1_1">§4.2.1.1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inference</span><span class="plain-syntax"> *</span><span class="identifier-syntax">i</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">i</span><span class="plain-syntax">-></span><span class="identifier-syntax">family</span><span class="plain-syntax"> != </span><span class="identifier-syntax">property_inf</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>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">property_inference_data</span><span class="plain-syntax"> *</span><span class="identifier-syntax">data</span><span class="plain-syntax"> = </span><span class="identifier-syntax">RETRIEVE_POINTER_property_inference_data</span><span class="plain-syntax">(</span><span class="identifier-syntax">i</span><span class="plain-syntax">-></span><span class="element-syntax">data</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">data</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property_value</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>The ability to set the kind looks very odd here, and it is used only to force
|
|
the initial value property to be textual for certain bibliographic data.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="function-syntax">PropertyInferences::set_value_kind</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">PropertyInferences::set_value_kind</span></span>:<br/>Nonlocal Variables - <a href="2-nv.html#SP11">§11</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inference</span><span class="plain-syntax"> *</span><span class="identifier-syntax">i</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">property_inference_data</span><span class="plain-syntax"> *</span><span class="identifier-syntax">data</span><span class="plain-syntax"> = </span><span class="identifier-syntax">RETRIEVE_POINTER_property_inference_data</span><span class="plain-syntax">(</span><span class="identifier-syntax">i</span><span class="plain-syntax">-></span><span class="element-syntax">data</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Node::set_kind_of_value</span><span class="plain-syntax">(</span><span class="identifier-syntax">data</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">data</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_property_value</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. </b>That's everything on setting up these inferences, so the remaining functions
|
|
are for working out what properties a subject actually has, on the basis of
|
|
its inference list.
|
|
</p>
|
|
|
|
<p class="commentary">First, this returns the level of certainty that <span class="extract"><span class="extract-syntax">subj</span></span> has the either-or
|
|
property <span class="extract"><span class="extract-syntax">prn</span></span>:
|
|
</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">PropertyInferences::either_or_state</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">PropertyInferences::either_or_state</span></span>:<br/><a href="5-pi.html#SP11">§11</a><br/>The Naming Thicket - <a href="5-tnt.html#SP7">§7</a>, <a href="5-tnt.html#SP8">§8</a>, <a href="5-tnt.html#SP9_1_2_2">§9.1.2.2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">subj</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">subj</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">UNKNOWN_CE</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">k</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">prnbar</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="3-prp.html#SP13" class="function-link"><span class="function-syntax">Properties::is_either_or</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">)) </span><span class="identifier-syntax">prnbar</span><span class="plain-syntax"> = </span><a href="3-ep.html#SP6" class="function-link"><span class="function-syntax">EitherOrProperties::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="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="identifier-syntax">k</span><span class="plain-syntax"> = </span><span class="identifier-syntax">subj</span><span class="plain-syntax">; </span><span class="identifier-syntax">k</span><span class="plain-syntax">; </span><span class="identifier-syntax">k</span><span class="plain-syntax"> = </span><a href="4-is.html#SP11" class="function-link"><span class="function-syntax">InferenceSubjects::narrowest_broader_subject</span></a><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">inference</span><span class="plain-syntax"> *</span><span class="identifier-syntax">inf</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">KNOWLEDGE_LOOP</span><span class="plain-syntax">(</span><span class="identifier-syntax">inf</span><span class="plain-syntax">, </span><span class="identifier-syntax">k</span><span class="plain-syntax">, </span><span class="identifier-syntax">property_inf</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">known</span><span class="plain-syntax"> = </span><a href="5-pi.html#SP7" class="function-link"><span class="function-syntax">PropertyInferences::get_property</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inf</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">c</span><span class="plain-syntax"> = </span><a href="5-inf.html#SP3" class="function-link"><span class="function-syntax">Inferences::get_certainty</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inf</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">known</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">known</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">c</span><span class="plain-syntax"> != </span><span class="identifier-syntax">UNKNOWN_CE</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">c</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">prnbar</span><span class="plain-syntax"> == </span><span class="identifier-syntax">known</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">c</span><span class="plain-syntax"> != </span><span class="identifier-syntax">UNKNOWN_CE</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> -</span><span class="identifier-syntax">c</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">UNKNOWN_CE</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. </b>And this is a variant which does not inherit: e.g. if the kind "bird" has
|
|
the property "flightless" but Orville, an individual instance of"bird" has no
|
|
inference about this property, then we would return <span class="extract"><span class="extract-syntax">LIKELY_CE</span></span> if asked about
|
|
"bird", but <span class="extract"><span class="extract-syntax">UNKNOWN_CE</span></span> if asked Orville. The previous function would return
|
|
<span class="extract"><span class="extract-syntax">LIKELY_CE</span></span> to both because Orville ordinarily inherits from his kind.
|
|
</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">PropertyInferences::either_or_state_without_inheritance</span><span class="plain-syntax">(</span><span class="reserved-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">subj</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">prn</span><span class="plain-syntax">, </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> **</span><span class="identifier-syntax">where</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">subj</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">UNKNOWN_CE</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">prnbar</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="3-prp.html#SP13" class="function-link"><span class="function-syntax">Properties::is_either_or</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prn</span><span class="plain-syntax">)) </span><span class="identifier-syntax">prnbar</span><span class="plain-syntax"> = </span><a href="3-ep.html#SP6" class="function-link"><span class="function-syntax">EitherOrProperties::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="reserved-syntax">inference</span><span class="plain-syntax"> *</span><span class="identifier-syntax">inf</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">KNOWLEDGE_LOOP</span><span class="plain-syntax">(</span><span class="identifier-syntax">inf</span><span class="plain-syntax">, </span><span class="identifier-syntax">subj</span><span class="plain-syntax">, </span><span class="identifier-syntax">property_inf</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">known</span><span class="plain-syntax"> = </span><a href="5-pi.html#SP7" class="function-link"><span class="function-syntax">PropertyInferences::get_property</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inf</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">c</span><span class="plain-syntax"> = </span><a href="5-inf.html#SP3" class="function-link"><span class="function-syntax">Inferences::get_certainty</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inf</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">known</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">known</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">c</span><span class="plain-syntax"> != </span><span class="identifier-syntax">UNKNOWN_CE</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">where</span><span class="plain-syntax">) *</span><span class="identifier-syntax">where</span><span class="plain-syntax"> = </span><a href="5-inf.html#SP3" class="function-link"><span class="function-syntax">Inferences::where_inferred</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inf</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">c</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">prnbar</span><span class="plain-syntax"> == </span><span class="identifier-syntax">known</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">c</span><span class="plain-syntax"> != </span><span class="identifier-syntax">UNKNOWN_CE</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">where</span><span class="plain-syntax">) *</span><span class="identifier-syntax">where</span><span class="plain-syntax"> = </span><a href="5-inf.html#SP3" class="function-link"><span class="function-syntax">Inferences::where_inferred</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inf</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">c</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">UNKNOWN_CE</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>This function does something a little unexpected, but is used only in indexing
|
|
to work out whether a property is relevant to a given subject.
|
|
</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">PropertyInferences::has_or_can_have</span><span class="plain-syntax">(</span><span class="reserved-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">subj</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><a href="3-prp.html#SP13" class="function-link"><span class="function-syntax">Properties::is_either_or</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">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">has</span><span class="plain-syntax"> = </span><a href="5-pi.html#SP9" class="function-link"><span class="function-syntax">PropertyInferences::either_or_state</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">subj</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">has</span><span class="plain-syntax"> == </span><span class="identifier-syntax">UNKNOWN_CE</span><span class="plain-syntax">) && (</span><a href="4-pp.html#SP2" class="function-link"><span class="function-syntax">PropertyPermissions::find</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">subj</span><span class="plain-syntax">, </span><span class="identifier-syntax">prn</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">RTProperties::stored_in_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="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">LIKELY_CE</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">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">UNLIKELY_CE</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">has</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><a href="4-pp.html#SP2" class="function-link"><span class="function-syntax">PropertyPermissions::find</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">subj</span><span class="plain-syntax">, </span><span class="identifier-syntax">prn</span><span class="plain-syntax">, </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">LIKELY_CE</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">UNKNOWN_CE</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. </b>Moving on to value properties, the following catches some late problems.
|
|
Rival values for the same property would be caught as contradictions at
|
|
assertion time in some cases, but because kinds are not always exactly known
|
|
when assertions are read, we can't yet know for sure. So later checks catch
|
|
anything falling through this crack.
|
|
</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">PropertyInferences::verify_prop_states</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">PropertyInferences::verify_prop_states</span></span>:<br/>Inference Subjects - <a href="4-is.html#SP27">§27</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">subj</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inference</span><span class="plain-syntax"> *</span><span class="identifier-syntax">inf</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">POSITIVE_KNOWLEDGE_LOOP</span><span class="plain-syntax">(</span><span class="identifier-syntax">inf</span><span class="plain-syntax">, </span><span class="identifier-syntax">subj</span><span class="plain-syntax">, </span><span class="identifier-syntax">property_inf</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">prn</span><span class="plain-syntax"> = </span><a href="5-pi.html#SP7" class="function-link"><span class="function-syntax">PropertyInferences::get_property</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inf</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">val</span><span class="plain-syntax"> = </span><a href="5-pi.html#SP7" class="function-link"><span class="function-syntax">PropertyInferences::get_value</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inf</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">PK</span><span class="plain-syntax"> = </span><a href="3-vp.html#SP6" class="function-link"><span class="function-syntax">ValueProperties::kind</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">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VK</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Specifications::to_kind</span><span class="plain-syntax">(</span><span class="identifier-syntax">val</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">Kinds::compatible</span><span class="plain-syntax">(</span><span class="identifier-syntax">VK</span><span class="plain-syntax">, </span><span class="identifier-syntax">PK</span><span class="plain-syntax">) != </span><span class="identifier-syntax">ALWAYS_MATCH</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"Property value given as %u not %u\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">VK</span><span class="plain-syntax">, </span><span class="identifier-syntax">PK</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax"> = </span><span class="identifier-syntax">inf</span><span class="plain-syntax">-></span><span class="element-syntax">inferred_from</span><span class="plain-syntax">;</span>
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<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>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_property</span><span class="plain-syntax">(2, </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">Problems::quote_kind</span><span class="plain-syntax">(3, </span><span class="identifier-syntax">VK</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_kind</span><span class="plain-syntax">(4, </span><span class="identifier-syntax">PK</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::handmade_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">Task::syntax_tree</span><span class="plain-syntax">(),</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_LateInferenceProblem</span><span class="plain-syntax">));</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_segment</span><span class="plain-syntax">(</span>
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|
<span class="plain-syntax"> </span><span class="string-syntax">"You wrote %1, but that tries to set the value of the '%2' "</span>
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|
<span class="plain-syntax"> </span><span class="string-syntax">"property to %3 - which must be wrong because this property "</span>
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|
<span class="plain-syntax"> </span><span class="string-syntax">"has to be %4."</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_end</span><span class="plain-syntax">();</span>
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<span class="plain-syntax"> }</span>
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|
<span class="plain-syntax"> }</span>
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|
<span class="plain-syntax">}</span>
|
|
</pre>
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|
<p class="commentary firstcommentary"><a id="SP13" class="paragraph-anchor"></a><b>§13. </b>And these three function calls are all variants on reading the value of
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property <span class="extract"><span class="extract-syntax">prn</span></span> for subject <span class="extract"><span class="extract-syntax">subj</span></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="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="function-syntax">PropertyInferences::value_of</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">PropertyInferences::value_of</span></span>:<br/>The Naming Thicket - <a href="5-tnt.html#SP7">§7</a>, <a href="5-tnt.html#SP9_1_4">§9.1.4</a>, <a href="5-tnt.html#SP12">§12</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">subj</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">return</span><span class="plain-syntax"> </span><a href="5-pi.html#SP14" class="function-link"><span class="function-syntax">PropertyInferences::pval_reader</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">subj</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">TRUE</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="function-syntax">PropertyInferences::value_and_where</span><span class="plain-syntax">(</span><span class="reserved-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">subj</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="identifier-syntax">parse_node</span><span class="plain-syntax"> **</span><span class="identifier-syntax">where</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="5-pi.html#SP14" class="function-link"><span class="function-syntax">PropertyInferences::pval_reader</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">subj</span><span class="plain-syntax">, </span><span class="identifier-syntax">prn</span><span class="plain-syntax">, </span><span class="identifier-syntax">where</span><span class="plain-syntax">, </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="function-syntax">PropertyInferences::value_and_where_without_inheritance</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">PropertyInferences::value_and_where_without_inheritance</span></span>:<br/>The Naming Thicket - <a href="5-tnt.html#SP9_1_3">§9.1.3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">subj</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">prn</span><span class="plain-syntax">, </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> **</span><span class="identifier-syntax">where</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="5-pi.html#SP14" class="function-link"><span class="function-syntax">PropertyInferences::pval_reader</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">subj</span><span class="plain-syntax">, </span><span class="identifier-syntax">prn</span><span class="plain-syntax">, </span><span class="identifier-syntax">where</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="SP14" class="paragraph-anchor"></a><b>§14. </b>All using:
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="function-syntax">PropertyInferences::pval_reader</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">PropertyInferences::pval_reader</span></span>:<br/><a href="5-pi.html#SP13">§13</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">subj</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">prn</span><span class="plain-syntax">, </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> **</span><span class="identifier-syntax">where</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">inherit</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">subj</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</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">inference_subject</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">for</span><span class="plain-syntax"> (</span><span class="identifier-syntax">k</span><span class="plain-syntax"> = </span><span class="identifier-syntax">subj</span><span class="plain-syntax">; </span><span class="identifier-syntax">k</span><span class="plain-syntax">; </span><span class="identifier-syntax">k</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">inherit</span><span class="plain-syntax">)?</span><a href="4-is.html#SP11" class="function-link"><span class="function-syntax">InferenceSubjects::narrowest_broader_subject</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">k</span><span class="plain-syntax">):</span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inference</span><span class="plain-syntax"> *</span><span class="identifier-syntax">inf</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">POSITIVE_KNOWLEDGE_LOOP</span><span class="plain-syntax">(</span><span class="identifier-syntax">inf</span><span class="plain-syntax">, </span><span class="identifier-syntax">k</span><span class="plain-syntax">, </span><span class="identifier-syntax">property_inf</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">known</span><span class="plain-syntax"> = </span><a href="5-pi.html#SP7" class="function-link"><span class="function-syntax">PropertyInferences::get_property</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inf</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">known</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">where</span><span class="plain-syntax">) *</span><span class="identifier-syntax">where</span><span class="plain-syntax"> = </span><a href="5-inf.html#SP3" class="function-link"><span class="function-syntax">Inferences::where_inferred</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inf</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="5-pi.html#SP7" class="function-link"><span class="function-syntax">PropertyInferences::get_value</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inf</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
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