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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">assertions</a></li><li><a href="index.html#3">Chapter 3: Requests</a></li><li><b>New Property Requests</b></li></ul></div>
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<p class="purpose">Special sentences creating new either/or properties.</p>
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. </b>Two special meanings can lead to new either/or properties, or to condition
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properties: "X is either Y or Z" and "X can be Y or Z". These have the same
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effect as each other.
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</p>
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<pre class="Preform-displayed-code all-displayed-code code-font">
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<span class="Preform-function-syntax"><either-sentence-object></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">::=</span>
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<span class="Preform-plain-syntax"> </span><span class="Preform-constant-syntax">either</span><span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><np-unparsed></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> { pass 1 }</span>
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</pre>
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<ul class="endnotetexts"><li>This is <a href="../words-module/4-ap.html" class="internal">Preform grammar</a>, not regular C code.</li></ul>
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<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. </b></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">NewPropertyRequests::either_SMF</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">NewPropertyRequests::either_SMF</span></span>:<br/>Booting Verbs - <a href="2-bv.html#SP1_3">§1.3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">task</span><span class="plain-syntax">, </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">V</span><span class="plain-syntax">, </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> *</span><span class="identifier-syntax">NPs</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">SW</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">NPs</span><span class="plain-syntax">)?(</span><span class="identifier-syntax">NPs</span><span class="plain-syntax">[0]):</span><span class="identifier-syntax">EMPTY_WORDING</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">OW</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">NPs</span><span class="plain-syntax">)?(</span><span class="identifier-syntax">NPs</span><span class="plain-syntax">[1]):</span><span class="identifier-syntax">EMPTY_WORDING</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">switch</span><span class="plain-syntax"> (</span><span class="identifier-syntax">task</span><span class="plain-syntax">) { </span><span class="comment-syntax"> "A room is either dark or lighted."</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">ACCEPT_SMFT:</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="function-syntax"><either-sentence-object></span><span class="plain-syntax">(</span><span class="identifier-syntax">OW</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">O</span><span class="plain-syntax"> = </span><span class="function-syntax"><<rp>></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="function-syntax"><np-unparsed></span><span class="plain-syntax">(</span><span class="identifier-syntax">SW</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">V</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax"> = </span><span class="function-syntax"><<rp>></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">V</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax"> = </span><span class="identifier-syntax">O</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">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><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">PASS_1_SMFT:</span>
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<span class="plain-syntax"> </span><a href="3-npr.html#SP5" class="function-link"><span class="function-syntax">NewPropertyRequests::declare_property_can_be</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">V</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">break</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">FALSE</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="SP3" class="paragraph-anchor"></a><b>§3. </b></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">NewPropertyRequests::optional_either_SMF</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">NewPropertyRequests::optional_either_SMF</span></span>:<br/>Booting Verbs - <a href="2-bv.html#SP1_3">§1.3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">task</span><span class="plain-syntax">, </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">V</span><span class="plain-syntax">, </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> *</span><span class="identifier-syntax">NPs</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">SW</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">NPs</span><span class="plain-syntax">)?(</span><span class="identifier-syntax">NPs</span><span class="plain-syntax">[0]):</span><span class="identifier-syntax">EMPTY_WORDING</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">OW</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">NPs</span><span class="plain-syntax">)?(</span><span class="identifier-syntax">NPs</span><span class="plain-syntax">[1]):</span><span class="identifier-syntax">EMPTY_WORDING</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">switch</span><span class="plain-syntax"> (</span><span class="identifier-syntax">task</span><span class="plain-syntax">) { </span><span class="comment-syntax"> "A room can be dark or lighted."</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">ACCEPT_SMFT:</span>
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<span class="plain-syntax"> </span><span class="function-syntax"><np-unparsed></span><span class="plain-syntax">(</span><span class="identifier-syntax">OW</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">O</span><span class="plain-syntax"> = </span><span class="function-syntax"><<rp>></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="function-syntax"><np-unparsed></span><span class="plain-syntax">(</span><span class="identifier-syntax">SW</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">V</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax"> = </span><span class="function-syntax"><<rp>></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">V</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax"> = </span><span class="identifier-syntax">O</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">TRUE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">PASS_1_SMFT:</span>
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<span class="plain-syntax"> </span><a href="3-npr.html#SP5" class="function-link"><span class="function-syntax">NewPropertyRequests::declare_property_can_be</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">V</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">break</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">FALSE</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>From a syntax point of view, such sentences come in two forms — those which
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give a range of possible named alternative states, and those which create
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named value properties. We'll take the first of those first.
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</p>
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<p class="commentary">We are concerned here with the syntax of sentences like
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</p>
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<blockquote>
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<p>A container can be stout, standard or fragile (this is its strength property).</p>
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</blockquote>
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<p class="commentary">The subject (in this example, "a container") is required not to match:
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</p>
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<pre class="Preform-displayed-code all-displayed-code code-font">
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<span class="Preform-function-syntax"><forbidden-property-owners></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">::=</span>
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<span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><article></span><span class="Preform-plain-syntax"> </span><span class="Preform-constant-syntax">kind</span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">|</span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP4_1" class="named-paragraph-link"><span class="named-paragraph">Issue PM_PropertyOfKind1 problem</span><span class="named-paragraph-number">4.1</span></a></span>
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<span class="Preform-plain-syntax"> </span><span class="Preform-constant-syntax">kind</span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">|</span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP4_1" class="named-paragraph-link"><span class="named-paragraph">Issue PM_PropertyOfKind1 problem</span><span class="named-paragraph-number">4.1</span></a></span>
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<span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><object-pronoun></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP4_2" class="named-paragraph-link"><span class="named-paragraph">Issue PM_PropertyOfPronoun problem</span><span class="named-paragraph-number">4.2</span></a></span>
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</pre>
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<ul class="endnotetexts"><li>This is <a href="../words-module/4-ap.html" class="internal">Preform grammar</a>, not regular C code.</li></ul>
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<p class="commentary firstcommentary"><a id="SP4_1" class="paragraph-anchor"></a><b>§4.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Issue PM_PropertyOfKind1 problem</span><span class="named-paragraph-number">4.1</span></span><span class="Preform-comment-syntax"> =</span>
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::sentence_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">Task::syntax_tree</span><span class="plain-syntax">(), </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_PropertyOfKind1</span><span class="plain-syntax">),</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"this seems to give a property to all kinds, rather than to objects or "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"values"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"which are the only things capable of having properties. For instance, "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"'A vehicle has a number called maximum speed' is fine, but not 'A kind "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"has a number called coolness rating'."</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> ==> { -1, - };</span>
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</pre>
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<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP4">§4</a> (twice).</li></ul>
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<p class="commentary firstcommentary"><a id="SP4_2" class="paragraph-anchor"></a><b>§4.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Issue PM_PropertyOfPronoun problem</span><span class="named-paragraph-number">4.2</span></span><span class="comment-syntax"> =</span>
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::sentence_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">Task::syntax_tree</span><span class="plain-syntax">(), </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_PropertyOfPronoun</span><span class="plain-syntax">),</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"it's often a little ambiguous to declare properties for 'it' "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"(or some similarly vague pronoun like 'him' or 'her')"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"so it seems best to spell this out by saying exactly what the "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"property's owner or owners would be."</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> ==> { -1, - };</span>
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</pre>
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<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP4">§4</a>.</li></ul>
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<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>§5. </b>It might look as if this should always create an either/or property, and
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in the speedy/sluggish example that's just what it does, but if there are
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three or more alternatives then it has to do something trickier: create a
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value property, and a new kind of value of which these alternatives form
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the legal range. Such a property is customarily called a "condition" (in
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the sense of a state of something, not a test — as in "this antique is in
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good condition", not "you can come in on one condition").
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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">NewPropertyRequests::declare_property_can_be</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">NewPropertyRequests::declare_property_can_be</span></span>:<br/><a href="3-npr.html#SP2">§2</a>, <a href="3-npr.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">p</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">the_owner</span><span class="plain-syntax"> = </span><span class="identifier-syntax">p</span><span class="plain-syntax">-></span><span class="element-syntax">next</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">the_list</span><span class="plain-syntax"> = </span><span class="identifier-syntax">the_owner</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="function-syntax"><can-be-sentence-object></span><span class="plain-syntax">(</span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">the_list</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">either_flag</span><span class="plain-syntax"> = </span><span class="function-syntax"><<r>></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">the_list</span><span class="plain-syntax">-></span><span class="identifier-syntax">down</span><span class="plain-syntax"> = </span><span class="function-syntax"><<rp>></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">the_list</span><span class="plain-syntax"> = </span><span class="identifier-syntax">the_list</span><span class="plain-syntax">-></span><span class="identifier-syntax">down</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">CNW</span><span class="plain-syntax"> = </span><span class="identifier-syntax">EMPTY_WORDING</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">the_list</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">) </span><span class="identifier-syntax">CNW</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">the_list</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax"> </span><a href="4-rpt.html#SP10" class="function-link"><span class="function-syntax">Refiner::refine</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">the_owner</span><span class="plain-syntax">, </span><span class="constant-syntax">FORBID_CREATION</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_4" class="named-paragraph-link"><span class="named-paragraph">Possession must be time-independent</span><span class="named-paragraph-number">5.4</span></a></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">count</span><span class="plain-syntax"> = </span><a href="3-npr.html#SP5_1" class="function-link"><span class="function-syntax">NewPropertyRequests::list_length</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">the_list</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_3" class="named-paragraph-link"><span class="named-paragraph">An optional condition name can only be given to a condition</span><span class="named-paragraph-number">5.3</span></a></span><span class="plain-syntax">;</span>
|
|
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">FW</span><span class="plain-syntax"> = </span><span class="identifier-syntax">EMPTY_WORDING</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">count</span><span class="plain-syntax"> == </span><span class="constant-syntax">1</span><span class="plain-syntax">) </span><span class="identifier-syntax">FW</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">the_list</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="identifier-syntax">FW</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">the_list</span><span class="plain-syntax">-></span><span class="identifier-syntax">down</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_5" class="named-paragraph-link"><span class="named-paragraph">Allow the word "either" as syntactic sugar when there are two alternatives</span><span class="named-paragraph-number">5.5</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">SW</span><span class="plain-syntax"> = </span><span class="identifier-syntax">EMPTY_WORDING</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">count</span><span class="plain-syntax"> >= </span><span class="constant-syntax">2</span><span class="plain-syntax">) </span><span class="identifier-syntax">SW</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">the_list</span><span class="plain-syntax">-></span><span class="identifier-syntax">down</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">);</span>
|
|
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="function-syntax"><forbidden-property-owners></span><span class="plain-syntax">(</span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">the_owner</span><span class="plain-syntax">))) </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">inference_subject</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner_infs</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_6" class="named-paragraph-link"><span class="named-paragraph">Determine the proud owner, and see if it's someone we consider worthy</span><span class="named-paragraph-number">5.6</span></a></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">owner_infs</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_7" class="named-paragraph-link"><span class="named-paragraph">Issue a problem message for an unworthy owner</span><span class="named-paragraph-number">5.7</span></a></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">count</span><span class="plain-syntax"> <= </span><span class="constant-syntax">2</span><span class="plain-syntax">) </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_8" class="named-paragraph-link"><span class="named-paragraph">Be very wary about nameclashes among either/or properties like these</span><span class="named-paragraph-number">5.8</span></a></span><span class="plain-syntax">;</span>
|
|
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prn</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">already_created_instances</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_9" class="named-paragraph-link"><span class="named-paragraph">Create the property and have the new owner provide it</span><span class="named-paragraph-number">5.9</span></a></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">already_created_instances</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">count</span><span class="plain-syntax"> == </span><span class="constant-syntax">2</span><span class="plain-syntax">) </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_10" class="named-paragraph-link"><span class="named-paragraph">Make the second option an either/or property which negates the first</span><span class="named-paragraph-number">5.10</span></a></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">count</span><span class="plain-syntax"> >= </span><span class="constant-syntax">3</span><span class="plain-syntax">) </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_11" class="named-paragraph-link"><span class="named-paragraph">Make the three or more options the range of possibilities for this new kind</span><span class="named-paragraph-number">5.11</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP5_1" class="paragraph-anchor"></a><b>§5.1. </b></p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">NewPropertyRequests::list_length</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">NewPropertyRequests::list_length</span></span>:<br/><a href="3-npr.html#SP5">§5</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</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">P</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">"Ooops"</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">Node::get_type</span><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">) == </span><span class="identifier-syntax">AND_NT</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="3-npr.html#SP5_1" class="function-link"><span class="function-syntax">NewPropertyRequests::list_length</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="identifier-syntax">down</span><span class="plain-syntax">) + </span><a href="3-npr.html#SP5_1" class="function-link"><span class="function-syntax">NewPropertyRequests::list_length</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="identifier-syntax">down</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">1</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP5_2" class="paragraph-anchor"></a><b>§5.2. </b>And the following parses the object noun phrase of a "can be" sentence,
|
|
which might take forms such as:
|
|
</p>
|
|
|
|
<blockquote>
|
|
<p>either speedy or sluggish</p>
|
|
</blockquote>
|
|
|
|
<blockquote>
|
|
<p>fast or slow</p>
|
|
</blockquote>
|
|
|
|
<blockquote>
|
|
<p>allegro, presto, or adagio (the speed property)</p>
|
|
</blockquote>
|
|
|
|
<blockquote>
|
|
<p>allegro, presto, or adagio (this is its speed property)</p>
|
|
</blockquote>
|
|
|
|
<pre class="Preform-displayed-code all-displayed-code code-font">
|
|
<span class="Preform-function-syntax"><can-be-sentence-object></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">::=</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-constant-syntax">either</span><span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><np-alternative-list></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">(</span><span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><condition-name></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">)</span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">|</span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> { TRUE, Node::compose(RP[1], RP[2]) }</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><np-alternative-list></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">(</span><span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><condition-name></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">)</span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">|</span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> { FALSE, Node::compose(RP[1], RP[2]) }</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-constant-syntax">either</span><span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><np-alternative-list></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">|</span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> { TRUE, RP[1] }</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><np-alternative-list></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> { FALSE, RP[1] }</span>
|
|
|
|
<span class="Preform-function-syntax"><condition-name></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">::=</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-constant-syntax">this</span><span class="Preform-plain-syntax"> </span><span class="Preform-constant-syntax">is</span><span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><condition-name-inner></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">|</span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> { 0, RP[1] }</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><condition-name-inner></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> { 0, RP[1] }</span>
|
|
|
|
<span class="Preform-function-syntax"><condition-name-inner></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">::=</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><article></span><span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><condition-name-innermost></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">|</span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> { 0, RP[2] }</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><possessive-third-person></span><span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><condition-name-innermost></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">|</span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> { 0, RP[2] }</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><condition-name-innermost></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> { 0, RP[1] }</span>
|
|
|
|
<span class="Preform-function-syntax"><condition-name-innermost></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">::=</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><np-unparsed></span><span class="Preform-plain-syntax"> </span><span class="Preform-constant-syntax">property</span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">|</span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> { 0, RP[1] }</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><np-unparsed></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> { 0, RP[1] }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This is <a href="../words-module/4-ap.html" class="internal">Preform grammar</a>, not regular C code.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_3" class="paragraph-anchor"></a><b>§5.3. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">An optional condition name can only be given to a condition</span><span class="named-paragraph-number">5.3</span></span><span class="Preform-comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">Wordings::nonempty</span><span class="plain-syntax">(</span><span class="identifier-syntax">CNW</span><span class="plain-syntax">)) && (</span><span class="identifier-syntax">count</span><span class="plain-syntax"> < </span><span class="constant-syntax">3</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::sentence_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">Task::syntax_tree</span><span class="plain-syntax">(), </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_ThisIsEitherOr</span><span class="plain-syntax">),</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"a name can only be supplied using '... (this is...)' when a new property "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"is being made with three or more named alternatives"</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"whereas here a simpler either/or property is being made with just one or "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"two possibilities - which means these named outcomes are the property names "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"themselves. For instance, 'A book can be mint or foxed' makes two either/or "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"properties, one called 'mint', the other called 'foxed'. So 'A book can "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"be mint or foxed (this is the cover state)' is not allowed."</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5">§5</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_4" class="paragraph-anchor"></a><b>§5.4. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Possession must be time-independent</span><span class="named-paragraph-number">5.4</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Node::get_type</span><span class="plain-syntax">(</span><span class="identifier-syntax">the_owner</span><span class="plain-syntax">) == </span><span class="identifier-syntax">WITH_NT</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::sentence_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">Task::syntax_tree</span><span class="plain-syntax">(), </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_QualifiedCanBe</span><span class="plain-syntax">),</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"only a room, a thing or a kind can have such adjectives applied to it"</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"and qualifications cannot be used. It makes no sense to say 'An open door "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"can be rickety or sturdy' because the door still has to have the property "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"even at times when it is not open: we must instead just say 'A door can be "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"rickety or sturdy'."</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5">§5</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_5" class="paragraph-anchor"></a><b>§5.5. </b>This allows for natural sentences such as:
|
|
</p>
|
|
|
|
<blockquote>
|
|
<p>An animal can be either alive or dead.</p>
|
|
</blockquote>
|
|
|
|
<p class="commentary">Here "either" has a slight sense of emphasis, implying the exclusivity of the
|
|
two choices — the lack of a middle way. That's not useful information for us,
|
|
because to Inform all either/or properties have that Aristotelian nature. But
|
|
we found in testing that users wrote the word "either" now and then,
|
|
regardless of what the documentation said. So we'll allow it but do nothing
|
|
differently as a result.
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Allow the word "either" as syntactic sugar when there are two alternatives</span><span class="named-paragraph-number">5.5</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">either_flag</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">count</span><span class="plain-syntax"> != </span><span class="constant-syntax">2</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::sentence_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">Task::syntax_tree</span><span class="plain-syntax">(), </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_EitherOnThree</span><span class="plain-syntax">),</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"that looks like an attempt to use 'either' other than to lay out exactly "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"two possibilities"</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"which is not allowed. (Technically it ought to be legal to have a property "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"whose name actually starts with 'either' but the confusion would be just "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"too awful to contemplate.)"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5">§5</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_6" class="paragraph-anchor"></a><b>§5.6. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Determine the proud owner, and see if it's someone we consider worthy</span><span class="named-paragraph-number">5.6</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner_spec</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Node::get_evaluation</span><span class="plain-syntax">(</span><span class="identifier-syntax">the_owner</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">Lvalues::is_actual_NONLOCAL_VARIABLE</span><span class="plain-syntax">(</span><span class="identifier-syntax">owner_spec</span><span class="plain-syntax">))</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_6_2" class="named-paragraph-link"><span class="named-paragraph">Disallow this variable as a new owner of a property</span><span class="named-paragraph-number">5.6.2</span></a></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">Descriptions::is_qualified</span><span class="plain-syntax">(</span><span class="identifier-syntax">owner_spec</span><span class="plain-syntax">))</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_6_3" class="named-paragraph-link"><span class="named-paragraph">Disallow this as an owner not time-independent</span><span class="named-paragraph-number">5.6.3</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">owner_infs</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Node::get_subject</span><span class="plain-syntax">(</span><span class="identifier-syntax">the_owner</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">owner_infs</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">owner_spec</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="function-syntax"><s-type-expression></span><span class="plain-syntax">(</span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">the_owner</span><span class="plain-syntax">)))</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">owner_infs</span><span class="plain-syntax"> = </span><span class="identifier-syntax">KindSubjects::from_kind</span><span class="plain-syntax">(</span><span class="identifier-syntax">Specifications::to_kind</span><span class="plain-syntax">(</span><span class="function-syntax"><<rp>></span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax"> = </span><span class="identifier-syntax">KindSubjects::to_kind</span><span class="plain-syntax">(</span><span class="identifier-syntax">owner_infs</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">K</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">KindSubjects::has_properties</span><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">))</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_6_1" class="named-paragraph-link"><span class="named-paragraph">Disallow this kind as a new owner of an either/or or condition</span><span class="named-paragraph-number">5.6.1</span></a></span><span class="plain-syntax">;</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5">§5</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_6_1" class="paragraph-anchor"></a><b>§5.6.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Disallow this kind as a new owner of an either/or or condition</span><span class="named-paragraph-number">5.6.1</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_source</span><span class="plain-syntax">(1, </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_kind</span><span class="plain-syntax">(2, </span><span class="identifier-syntax">K</span><span class="plain-syntax">);</span>
|
|
<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><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_ValueCantHaveProperties</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_segment</span><span class="plain-syntax">(</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"The sentence %1 looked to me as if it might be trying to create an either/or "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"property which would be held by all of the values of a rather large kind "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"(%2). But this is a kind which is not allowed to have properties, because "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"the storage requirements would be too difficult. For instance, scenes can "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"have properties like this, but numbers can't: that's because there are only "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"a few, named scenes, but there is an almost unlimited range of numbers. (That "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"doesn't mean you can't create adjectives using 'Definition: ...' - it's "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"only when storage would be needed that this limitation kicks in.)"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_end</span><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5_6">§5.6</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_6_2" class="paragraph-anchor"></a><b>§5.6.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Disallow this variable as a new owner of a property</span><span class="named-paragraph-number">5.6.2</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_source</span><span class="plain-syntax">(1, </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_wording</span><span class="plain-syntax">(2, </span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">the_owner</span><span class="plain-syntax">));</span>
|
|
<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><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_VariableCantHaveProperties</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_segment</span><span class="plain-syntax">(</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"The sentence %1 looked to me as if it might be trying to create an either/or "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"property which would be held by a variable ('%2'). But because '%2' can have "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"different values at different times, it's not clear who or what should have "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"the property. "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"%PThe most common case of this is saying something like 'The player can "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"be ambitious'. 'The player' is actually a variable, because the perspective "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"of play can change. Instead either say 'A person can be ambitious' or, if "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"you really only want the default player to be involved, 'Yourself can be "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"ambitious'."</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_end</span><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5_6">§5.6</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_6_3" class="paragraph-anchor"></a><b>§5.6.3. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Disallow this as an owner not time-independent</span><span class="named-paragraph-number">5.6.3</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::sentence_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">Task::syntax_tree</span><span class="plain-syntax">(), </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_OwnerTimeDependent</span><span class="plain-syntax">),</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"ownership of a property is something that has to be always true or "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"always false"</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"so that 'a room can be secret' is fine - a room is always a room - "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"but 'a dark room can be secret' is not - a room might be dark some "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"of the time, and lighted the rest of the time. You need to give a "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"straightforward owner, and not qualify it with adjectives or "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"other conditions."</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5_6">§5.6</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_7" class="paragraph-anchor"></a><b>§5.7. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Issue a problem message for an unworthy owner</span><span class="named-paragraph-number">5.7</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::sentence_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">Task::syntax_tree</span><span class="plain-syntax">(), </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_NonObjectCanBe</span><span class="plain-syntax">),</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"only a room, a thing or a kind can have such adjectives applied to it"</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"so that 'a dead end can be secret' is fine but 'taking can be secret' would "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"not be, since 'taking' is an action and not a room, thing or kind."</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5">§5</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_8" class="paragraph-anchor"></a><b>§5.8. </b>There are seven different ways this can go wrong, and they all share a
|
|
"miscellaneous" problem message.
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Be very wary about nameclashes among either/or properties like these</span><span class="named-paragraph-number">5.8</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">char</span><span class="plain-syntax"> *</span><span class="identifier-syntax">error_text</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">EW</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FW</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">already</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="function-syntax"><property-name></span><span class="plain-syntax">(</span><span class="identifier-syntax">FW</span><span class="plain-syntax">)) </span><span class="identifier-syntax">already</span><span class="plain-syntax"> = </span><span class="function-syntax"><<rp>></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_8_1" class="named-paragraph-link"><span class="named-paragraph">See if the first option already means something incompatible with this</span><span class="named-paragraph-number">5.8.1</span></a></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">count</span><span class="plain-syntax"> == </span><span class="constant-syntax">2</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">error_text</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">EW</span><span class="plain-syntax"> = </span><span class="identifier-syntax">SW</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_8_2" class="named-paragraph-link"><span class="named-paragraph">See if the second option is "not" plus an existing property</span><span class="named-paragraph-number">5.8.2</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">alreadybar</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="function-syntax"><property-name></span><span class="plain-syntax">(</span><span class="identifier-syntax">EW</span><span class="plain-syntax">)) </span><span class="identifier-syntax">alreadybar</span><span class="plain-syntax"> = </span><span class="function-syntax"><<rp>></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_8_3" class="named-paragraph-link"><span class="named-paragraph">See if the second option already means something incompatible with this</span><span class="named-paragraph-number">5.8.3</span></a></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">error_text</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_source</span><span class="plain-syntax">(1, </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_wording</span><span class="plain-syntax">(2, </span><span class="identifier-syntax">EW</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_text</span><span class="plain-syntax">(3, </span><span class="identifier-syntax">error_text</span><span class="plain-syntax">);</span>
|
|
<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>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_MiscellaneousEOProblem</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_segment</span><span class="plain-syntax">(</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"In %1, you proposed the new either/or property '%2': but %3."</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_end</span><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5">§5</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_8_1" class="paragraph-anchor"></a><b>§5.8.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">See if the first option already means something incompatible with this</span><span class="named-paragraph-number">5.8.1</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">already</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">Properties::is_either_or</span><span class="plain-syntax">(</span><span class="identifier-syntax">already</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">error_text</span><span class="plain-syntax"> = </span><span class="string-syntax">"this already has a meaning as a value property"</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="function-syntax"><s-type-expression-or-value></span><span class="plain-syntax">(</span><span class="identifier-syntax">FW</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">spec</span><span class="plain-syntax"> = </span><span class="function-syntax"><<rp>></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">Specifications::is_description</span><span class="plain-syntax">(</span><span class="identifier-syntax">spec</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">error_text</span><span class="plain-syntax"> = </span><span class="string-syntax">"this already has a meaning"</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5_8">§5.8</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_8_2" class="paragraph-anchor"></a><b>§5.8.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">See if the second option is "not" plus an existing property</span><span class="named-paragraph-number">5.8.2</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="function-syntax"><negated-clause></span><span class="plain-syntax">(</span><span class="identifier-syntax">EW</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">EPW</span><span class="plain-syntax"> = </span><span class="identifier-syntax">GET_RW</span><span class="plain-syntax">(</span><span class="function-syntax"><negated-clause></span><span class="plain-syntax">, </span><span class="constant-syntax">1</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">not_what</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="function-syntax"><property-name></span><span class="plain-syntax">(</span><span class="identifier-syntax">EPW</span><span class="plain-syntax">)) </span><span class="identifier-syntax">not_what</span><span class="plain-syntax"> = </span><span class="function-syntax"><<rp>></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">not_what</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">not_what</span><span class="plain-syntax"> != </span><span class="identifier-syntax">already</span><span class="plain-syntax">))</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">error_text</span><span class="plain-syntax"> =</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"this is 'not' compounded with an existing either/or "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"property, which would cause horrible ambiguities"</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5_8">§5.8</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_8_3" class="paragraph-anchor"></a><b>§5.8.3. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">See if the second option already means something incompatible with this</span><span class="named-paragraph-number">5.8.3</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">alreadybar</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">Properties::is_either_or</span><span class="plain-syntax">(</span><span class="identifier-syntax">alreadybar</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">error_text</span><span class="plain-syntax"> = </span><span class="string-syntax">"this already has a meaning as a value property"</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">already</span><span class="plain-syntax">) &&</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">EitherOrProperties::get_negation</span><span class="plain-syntax">(</span><span class="identifier-syntax">already</span><span class="plain-syntax">) != </span><span class="identifier-syntax">alreadybar</span><span class="plain-syntax">))</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">error_text</span><span class="plain-syntax"> = </span><span class="string-syntax">"this is not the same negation as the last "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"time this either/or property was used"</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">already</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) ||</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">EitherOrProperties::get_negation</span><span class="plain-syntax">(</span><span class="identifier-syntax">already</span><span class="plain-syntax">) != </span><span class="identifier-syntax">alreadybar</span><span class="plain-syntax">))</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">error_text</span><span class="plain-syntax"> =</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"this already has a meaning as an either/or property"</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="function-syntax"><s-type-expression-or-value></span><span class="plain-syntax">(</span><span class="identifier-syntax">EW</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">spec</span><span class="plain-syntax"> = </span><span class="function-syntax"><<rp>></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">Specifications::is_description</span><span class="plain-syntax">(</span><span class="identifier-syntax">spec</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">error_text</span><span class="plain-syntax"> = </span><span class="string-syntax">"this already has a meaning"</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5_8">§5.8</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_9" class="paragraph-anchor"></a><b>§5.9. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Create the property and have the new owner provide it</span><span class="named-paragraph-number">5.9</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">count</span><span class="plain-syntax"> <= </span><span class="constant-syntax">2</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax"> = </span><span class="identifier-syntax">EitherOrProperties::obtain</span><span class="plain-syntax">(</span><span class="identifier-syntax">FW</span><span class="plain-syntax">, </span><span class="identifier-syntax">owner_infs</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="reserved-syntax">return</span><span class="plain-syntax">; </span><span class="comment-syntax"> a problem was thrown</span>
|
|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="identifier-syntax">prn</span><span class="plain-syntax"> = </span><span class="identifier-syntax">ConditionsOfSubjects::parse</span><span class="plain-syntax">(</span><span class="identifier-syntax">owner_infs</span><span class="plain-syntax">, </span><span class="identifier-syntax">CNW</span><span class="plain-syntax">, </span><span class="identifier-syntax">the_list</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> &</span><span class="identifier-syntax">already_created_instances</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Assert::true_about</span><span class="plain-syntax">(</span>
|
|
<span class="plain-syntax"> </span><a href="8-cu.html#SP5" class="function-link"><span class="function-syntax">Propositions::Abstract::to_provide_property</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">owner_infs</span><span class="plain-syntax">, </span><span class="identifier-syntax">prevailing_mood</span><span class="plain-syntax">);</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5">§5</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_10" class="paragraph-anchor"></a><b>§5.10. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Make the second option an either/or property which negates the first</span><span class="named-paragraph-number">5.10</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prnbar</span><span class="plain-syntax"> = </span><span class="identifier-syntax">EitherOrProperties::obtain</span><span class="plain-syntax">(</span><span class="identifier-syntax">SW</span><span class="plain-syntax">, </span><span class="identifier-syntax">owner_infs</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="comment-syntax"> i.e., unless that threw a problem message</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Assert::true_about</span><span class="plain-syntax">(</span>
|
|
<span class="plain-syntax"> </span><a href="8-cu.html#SP5" class="function-link"><span class="function-syntax">Propositions::Abstract::to_provide_property</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prnbar</span><span class="plain-syntax">),</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">owner_infs</span><span class="plain-syntax">, </span><span class="identifier-syntax">prevailing_mood</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">EitherOrProperties::make_pair</span><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>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5">§5</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_11" class="paragraph-anchor"></a><b>§5.11. </b>An interesting anomaly in the language here is that when an either/or
|
|
pair is created, like so:
|
|
</p>
|
|
|
|
<blockquote>
|
|
<p>A vehicle can be speedy or sluggish.</p>
|
|
</blockquote>
|
|
|
|
<p class="commentary">the convention is that the first-named term is the more surprising one,
|
|
so that the default is the second. That seems natural, because if there's
|
|
just one named alternative, like this:
|
|
</p>
|
|
|
|
<blockquote>
|
|
<p>A vehicle can be fabulously racy.</p>
|
|
</blockquote>
|
|
|
|
<p class="commentary">then the default is for this property not to be had. But when there are
|
|
three or more alternatives, like so:
|
|
</p>
|
|
|
|
<blockquote>
|
|
<p>A vehicle can be petrol, diesel, electric or hybrid.</p>
|
|
</blockquote>
|
|
|
|
<p class="commentary">the default is the first option — petrol. This accords with the
|
|
convention that the first-created value for an enumerated kind is always
|
|
its default value.
|
|
</p>
|
|
|
|
<p class="commentary">But the beta-testers felt that this was an anomaly in the language. I
|
|
suspect they're right, but it isn't obvious to me what a better system
|
|
would be. And there does seem to be some subtle difference in English
|
|
meaning as to the suggested likelihood of possibilities, here. "You can
|
|
be useful" has the sense that you aren't useful right at the moment,
|
|
but "it can be blue, green or purple" tends to favour the front end
|
|
of the list as likelier, if anything — as when people offer an
|
|
exaggeratedly unlikely final choice: "you can be black, white, brown,
|
|
or sky blue pink".
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Make the three or more options the range of possibilities for this new kind</span><span class="named-paragraph-number">5.11</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">option</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">cnd_kind</span><span class="plain-syntax"> = </span><span class="identifier-syntax">ValueProperties::kind</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">for</span><span class="plain-syntax"> (</span><span class="identifier-syntax">option</span><span class="plain-syntax"> = </span><span class="identifier-syntax">the_list</span><span class="plain-syntax">; </span><span class="identifier-syntax">option</span><span class="plain-syntax">; </span><span class="identifier-syntax">option</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">option</span><span class="plain-syntax">-></span><span class="identifier-syntax">down</span><span class="plain-syntax">)?(</span><span class="identifier-syntax">option</span><span class="plain-syntax">-></span><span class="identifier-syntax">down</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">):</span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">PW</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">Node::get_type</span><span class="plain-syntax">(</span><span class="identifier-syntax">option</span><span class="plain-syntax">) == </span><span class="identifier-syntax">AND_NT</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">PW</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">option</span><span class="plain-syntax">-></span><span class="identifier-syntax">down</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">PW</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">option</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_11_1" class="named-paragraph-link"><span class="named-paragraph">Disallow this option name if it clashes with something non-adjectival</span><span class="named-paragraph-number">5.11.1</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-npr.html#SP5_11_2" class="named-paragraph-link"><span class="named-paragraph">Disallow this option name if it clashes with an either-or</span><span class="named-paragraph-number">5.11.2</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">pcalc_prop</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prop</span><span class="plain-syntax"> = </span><a href="8-cu.html#SP1" class="function-link"><span class="function-syntax">Propositions::Abstract::to_create_something</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">cnd_kind</span><span class="plain-syntax">, </span><span class="identifier-syntax">PW</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Assert::true</span><span class="plain-syntax">(</span><span class="identifier-syntax">prop</span><span class="plain-syntax">, </span><span class="identifier-syntax">prevailing_mood</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5">§5</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_11_1" class="paragraph-anchor"></a><b>§5.11.1. </b>The interesting thing here is that we do allow name-clashes with either/or
|
|
properties, with other condition values (since those are adjectival and
|
|
therefore parse to description specifications), and indeed adjectives
|
|
in general. What we don't want is for it to clash with a noun, because then
|
|
there would be horrible ambiguities in parsing.
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Disallow this option name if it clashes with something non-adjectival</span><span class="named-paragraph-number">5.11.1</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="function-syntax"><s-type-expression-or-value></span><span class="plain-syntax">(</span><span class="identifier-syntax">PW</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">spec</span><span class="plain-syntax"> = </span><span class="function-syntax"><<rp>></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">exempt</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">Specifications::is_description</span><span class="plain-syntax">(</span><span class="identifier-syntax">spec</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">Descriptions::is_qualified</span><span class="plain-syntax">(</span><span class="identifier-syntax">spec</span><span class="plain-syntax">))) </span><span class="identifier-syntax">exempt</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">Rvalues::is_CONSTANT_construction</span><span class="plain-syntax">(</span><span class="identifier-syntax">spec</span><span class="plain-syntax">, </span><span class="identifier-syntax">CON_property</span><span class="plain-syntax">)) </span><span class="identifier-syntax">exempt</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">exempt</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"Already means: $P\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">spec</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_source</span><span class="plain-syntax">(1, </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_wording</span><span class="plain-syntax">(2, </span><span class="identifier-syntax">PW</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_spec</span><span class="plain-syntax">(3, </span><span class="identifier-syntax">spec</span><span class="plain-syntax">);</span>
|
|
<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_PropertyAlreadyKnown</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">"In %1, one of the values you supply as a possibility is '%2', but this "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"already has a meaning (as %3)."</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">return</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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</pre>
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<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5_11">§5.11</a>.</li></ul>
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<p class="commentary firstcommentary"><a id="SP5_11_2" class="paragraph-anchor"></a><b>§5.11.2. </b>And similarly:
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</p>
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<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Disallow this option name if it clashes with an either-or</span><span class="named-paragraph-number">5.11.2</span></span><span class="comment-syntax"> =</span>
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="plain-syntax"> </span><span class="identifier-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">already</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">if</span><span class="plain-syntax"> (</span><span class="function-syntax"><property-name></span><span class="plain-syntax">(</span><span class="identifier-syntax">PW</span><span class="plain-syntax">)) </span><span class="identifier-syntax">already</span><span class="plain-syntax"> = </span><span class="function-syntax"><<rp>></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">already</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">Properties::is_either_or</span><span class="plain-syntax">(</span><span class="identifier-syntax">already</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_wording</span><span class="plain-syntax">(2, </span><span class="identifier-syntax">PW</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_EOClashesWithCondition</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">"In %1, one of the values you supply as a possibility is '%2', but this "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"already has a meaning as an either-or property. The same adjective "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"can't be used both ways, so you'll have to use a different word here."</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">return</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> }</span>
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</pre>
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<ul class="endnotetexts"><li>This code is used in <a href="3-npr.html#SP5_11">§5.11</a>.</li></ul>
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