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<!--Weave of 'Noun Identifiers' 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">runtime</a></li><li><a href="index.html#2">Chapter 2: Emission</a></li><li><b>Noun Identifiers</b></li></ul></div>
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<p class="purpose">Instances and kinds are both referred to by nouns, and here we create corresponding inames for use in compiled Inter code, and identifiers for use in the index.</p>
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. </b><span class="extract"><span class="extract-syntax">noun</span></span> objects are created in the <a href="../linguistics-module/index.html" class="internal">linguistics</a> module; the following attaches
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some compilation data to those.
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</p>
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<pre class="definitions code-font"><span class="definition-keyword">define</span> <span class="constant-syntax">NOUN_COMPILATION_LINGUISTICS_CALLBACK</span><span class="plain-syntax"> </span><a href="2-ni.html#SP1" class="function-link"><span class="function-syntax">NounIdentifiers::initialise_noun_compilation</span></a>
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</pre>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">name_compilation_data</span><span class="plain-syntax"> {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">nt_identifier</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">nt_iname</span><span class="plain-syntax">; </span><span class="comment-syntax"> (which will have that identifier)</span>
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<span class="plain-syntax">} </span><span class="reserved-syntax">name_compilation_data</span><span class="plain-syntax">;</span>
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">NounIdentifiers::initialise_noun_compilation</span><span class="plain-syntax">(</span><span class="identifier-syntax">noun</span><span class="plain-syntax"> *</span><span class="identifier-syntax">t</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">t</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">"no noun"</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">nt_identifier</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::new</span><span class="plain-syntax">();</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">nt_iname</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>
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</pre>
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<ul class="endnotetexts"><li>The structure name_compilation_data is private to this section.</li></ul>
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<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. </b>This records a textual identifier...
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="function-syntax">NounIdentifiers::identifier</span><span class="plain-syntax">(</span><span class="identifier-syntax">noun</span><span class="plain-syntax"> *</span><span class="identifier-syntax">t</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">t</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"nothing"</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">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">nt_identifier</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>§3. </b>...and also an iname:
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">NounIdentifiers::iname_set</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">NounIdentifiers::iname_set</span></span>:<br/>Kind Declarations - <a href="2-kd.html#SP5">§5</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">noun</span><span class="plain-syntax"> *</span><span class="identifier-syntax">t</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">t</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">FALSE</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">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">nt_iname</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">FALSE</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="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">NounIdentifiers::set_iname</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">NounIdentifiers::set_iname</span></span>:<br/>Kind Declarations - <a href="2-kd.html#SP5">§5</a><br/>Instances - <a href="5-ins.html#SP1">§1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">noun</span><span class="plain-syntax"> *</span><span class="identifier-syntax">t</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">iname</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">nt_iname</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">nt_iname</span><span class="plain-syntax"> = </span><span class="identifier-syntax">iname</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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<span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="function-syntax">NounIdentifiers::iname</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">NounIdentifiers::iname</span></span>:<br/>Kind Declarations - <a href="2-kd.html#SP5">§5</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">noun</span><span class="plain-syntax"> *</span><span class="identifier-syntax">t</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">t</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">nt_iname</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">"no iname for noun"</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">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">nt_iname</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>If a noun is given an explicit Inter identifier — for example, if the
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player's avatar is given the identifier <span class="extract"><span class="extract-syntax">selfobj</span></span> rather than, say, <span class="extract"><span class="extract-syntax">I_yourself</span></span> —
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then we need to change the textual identifier, and also the translation of
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the iname. We also want it to be visible to the linker, and we know that the
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name will be unique in the global namespace, so we tell the linker not to
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mutate the name in order to achieve that uniqueness.
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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">NounIdentifiers::noun_set_translation</span><span class="plain-syntax">(</span><span class="identifier-syntax">noun</span><span class="plain-syntax"> *</span><span class="identifier-syntax">t</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">new</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">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">nt_iname</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">"no instance iname yet"</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ident</span><span class="plain-syntax"> = </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">nt_identifier</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Str::clear</span><span class="plain-syntax">(</span><span class="identifier-syntax">ident</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Str::copy</span><span class="plain-syntax">(</span><span class="identifier-syntax">ident</span><span class="plain-syntax">, </span><span class="identifier-syntax">new</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">Str::get_first_char</span><span class="plain-syntax">(</span><span class="identifier-syntax">ident</span><span class="plain-syntax">) == </span><span class="character-syntax">'"'</span><span class="plain-syntax">) </span><span class="identifier-syntax">Str::delete_first_character</span><span class="plain-syntax">(</span><span class="identifier-syntax">ident</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">Str::get_last_char</span><span class="plain-syntax">(</span><span class="identifier-syntax">ident</span><span class="plain-syntax">) == </span><span class="character-syntax">'"'</span><span class="plain-syntax">) </span><span class="identifier-syntax">Str::delete_last_character</span><span class="plain-syntax">(</span><span class="identifier-syntax">ident</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">iname</span><span class="plain-syntax"> = </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">nt_iname</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">iname</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::change_translation</span><span class="plain-syntax">(</span><span class="identifier-syntax">iname</span><span class="plain-syntax">, </span><span class="identifier-syntax">ident</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::clear_flag</span><span class="plain-syntax">(</span><span class="identifier-syntax">iname</span><span class="plain-syntax">, </span><span class="identifier-syntax">MAKE_NAME_UNIQUE</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-hrr.html#SP17" class="function-link"><span class="function-syntax">Hierarchy::make_available</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">iname</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax">}</span>
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