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<!--Weave of 'Adjectival Definition Family' generated by Inweb-->
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<div class="breadcrumbs">
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<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../compiler.html">Inform7</a></li><li><a href="index.html">assertions</a></li><li><a href="index.html#5">Chapter 5: Imperative Code</a></li><li><b>Adjectival Definition Family</b></li></ul></div>
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<p class="purpose">Imperative definitions of "Definition: X is Y: ..." adjectives.</p>
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. </b></p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">imperative_defn_family</span><span class="plain-syntax"> *</span><span class="identifier-syntax">DEFINITIONAL_PHRASE_EFF_family</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">; </span><span class="comment-syntax"> "Definition: a container is roomy if: ..."</span>
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</pre>
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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">void</span><span class="plain-syntax"> </span><span class="function-syntax">AdjectivalDefinitionFamily::create_family</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">AdjectivalDefinitionFamily::create_family</span></span>:<br/>Imperative Definitions - <a href="5-id.html#SP7">§7</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">DEFINITIONAL_PHRASE_EFF_family</span><span class="plain-syntax"> = </span><a href="5-id.html#SP1" class="function-link"><span class="function-syntax">ImperativeDefinitions::new_family</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"DEFINITIONAL_PHRASE_EFF"</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">METHOD_ADD</span><span class="plain-syntax">(</span><span class="identifier-syntax">DEFINITIONAL_PHRASE_EFF_family</span><span class="plain-syntax">, </span><span class="constant-syntax">CLAIM_IMP_DEFN_MTID</span><span class="plain-syntax">, </span><a href="5-adf.html#SP4" class="function-link"><span class="function-syntax">AdjectivalDefinitionFamily::claim</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">METHOD_ADD</span><span class="plain-syntax">(</span><span class="identifier-syntax">DEFINITIONAL_PHRASE_EFF_family</span><span class="plain-syntax">, </span><span class="constant-syntax">NEW_PHRASE_IMP_DEFN_MTID</span><span class="plain-syntax">, </span><a href="5-adf.html#SP5" class="function-link"><span class="function-syntax">AdjectivalDefinitionFamily::new_phrase</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>§3. </b></p>
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<pre class="Preform-displayed-code all-displayed-code code-font">
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<span class="Preform-function-syntax"><definition-preamble></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">definition</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" class="paragraph-anchor"></a><b>§4. </b></p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">AdjectivalDefinitionFamily::claim</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">AdjectivalDefinitionFamily::claim</span></span>:<br/><a href="5-adf.html#SP2">§2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">imperative_defn_family</span><span class="plain-syntax"> *</span><span class="identifier-syntax">self</span><span class="plain-syntax">, </span><span class="reserved-syntax">imperative_defn</span><span class="plain-syntax"> *</span><span class="identifier-syntax">id</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">W</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">at</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"><definition-preamble></span><span class="plain-syntax">(</span><span class="identifier-syntax">W</span><span class="plain-syntax">)) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">family</span><span class="plain-syntax"> = </span><span class="identifier-syntax">DEFINITIONAL_PHRASE_EFF_family</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">id</span><span class="plain-syntax">-></span><span class="element-syntax">at</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">at</span><span class="plain-syntax">-></span><span class="identifier-syntax">down</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) &&</span>
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<span class="plain-syntax"> (</span><span class="identifier-syntax">Node::get_type</span><span class="plain-syntax">(</span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">at</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">) == </span><span class="identifier-syntax">IMPERATIVE_NT</span><span class="plain-syntax">)) {</span>
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<span class="plain-syntax"> </span><a href="2-is.html#SP1" class="function-link"><span class="function-syntax">ImperativeSubtrees::accept_body</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">at</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">Node::set_type</span><span class="plain-syntax">(</span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">at</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">, </span><span class="identifier-syntax">DEFN_CONT_NT</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="identifier-syntax">Phrases::Adjectives::look_for_headers</span><span class="plain-syntax">(</span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">at</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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<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>§5. </b>If a phrase defines an adjective, like so:
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</p>
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<blockquote>
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<p>Definition: A container is capacious if: ...</p>
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</blockquote>
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<p class="commentary">we need to make the pronoun "it" a local variable of kind "container" in the
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stack frame used to compile the "..." part. If it uses a calling, like so:
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</p>
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<blockquote>
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<p>Definition: A container (called the sack) is capacious if: ...</p>
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</blockquote>
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<p class="commentary">then we also want the name "sack" to refer to this. Here's where we take care
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of it:
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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">AdjectivalDefinitionFamily::new_phrase</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">AdjectivalDefinitionFamily::new_phrase</span></span>:<br/><a href="5-adf.html#SP2">§2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">imperative_defn_family</span><span class="plain-syntax"> *</span><span class="identifier-syntax">self</span><span class="plain-syntax">, </span><span class="reserved-syntax">imperative_defn</span><span class="plain-syntax"> *</span><span class="identifier-syntax">id</span><span class="plain-syntax">, </span><span class="identifier-syntax">phrase</span><span class="plain-syntax"> *</span><span class="identifier-syntax">new_ph</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">CW</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="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Phrases::Phrasal::define_adjective_by_phrase</span><span class="plain-syntax">(</span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">at</span><span class="plain-syntax">, </span><span class="identifier-syntax">new_ph</span><span class="plain-syntax">, &</span><span class="identifier-syntax">CW</span><span class="plain-syntax">, &</span><span class="identifier-syntax">K</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">LocalVariables::add_pronoun</span><span class="plain-syntax">(&(</span><span class="identifier-syntax">new_ph</span><span class="plain-syntax">-></span><span class="identifier-syntax">stack_frame</span><span class="plain-syntax">), </span><span class="identifier-syntax">CW</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</span><span class="plain-syntax">);</span>
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<span class="plain-syntax">}</span>
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