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<!--Weave of 'Grammar Types' 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">if</a></li><li><a href="index.html#5">Chapter 5: Command Grammar</a></li><li><b>Grammar Types</b></li></ul></div>
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<p class="purpose">Some grammar text specifies one or more values, and we need to keep track of their kind(s). Here we manage the data structure doing this.</p>
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<ul class="toc"><li><a href="5-gt.html#SP1">§1. Definitions</a></li></ul><hr class="tocbar">
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. Definitions. </b></p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">grammar_type</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">no_resulting_values</span><span class="plain-syntax">; </span><span class="comment-syntax"> number of resulting values: 0, 1 or 2; or </span><span class="extract"><span class="extract-syntax">-1</span></span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">first_type</span><span class="plain-syntax">; </span><span class="comment-syntax"> and their types</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">second_type</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">first_multiplicity</span><span class="plain-syntax">; </span><span class="comment-syntax"> lines only: allow a multiple object here?</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">second_multiplicity</span><span class="plain-syntax">; </span><span class="comment-syntax"> lines only: allow a multiple object here?</span>
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<span class="plain-syntax">} </span><span class="reserved-syntax">grammar_type</span><span class="plain-syntax">;</span>
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</pre>
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<ul class="endnotetexts"><li>The structure grammar_type 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></p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">grammar_type</span><span class="plain-syntax"> </span><span class="function-syntax">PL::Parsing::Tokens::Types::new</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">PL::Parsing::Tokens::Types::new</span></span>:<br/>Grammar Verbs - <a href="5-gv.html#SP4">§4</a><br/>Grammar Lines - <a href="5-gl.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">supports_return_type</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">grammar_type</span><span class="plain-syntax"> </span><span class="identifier-syntax">gty</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">gty</span><span class="plain-syntax">.</span><span class="element-syntax">first_type</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">gty</span><span class="plain-syntax">.</span><span class="element-syntax">second_type</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">gty</span><span class="plain-syntax">.</span><span class="element-syntax">first_multiplicity</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="identifier-syntax">gty</span><span class="plain-syntax">.</span><span class="element-syntax">second_multiplicity</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">supports_return_type</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">gty</span><span class="plain-syntax">.</span><span class="element-syntax">no_resulting_values</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">else</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">gty</span><span class="plain-syntax">.</span><span class="element-syntax">no_resulting_values</span><span class="plain-syntax"> = -1;</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">gty</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>The multiplication by 10 here is explained in the discussion of GSB
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tallying during GL sorting in "Grammar Lines". Do not amend it without
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changing that discussion.
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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">PL::Parsing::Tokens::Types::add_type</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">PL::Parsing::Tokens::Types::add_type</span></span>:<br/>Grammar Lines - <a href="5-gl.html#SP14">§14</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">grammar_type</span><span class="plain-syntax"> *</span><span class="identifier-syntax">gty</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>
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<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">multiple_flag</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">score</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">gty</span><span class="plain-syntax">-></span><span class="element-syntax">no_resulting_values</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="constant-syntax">0</span><span class="plain-syntax">:</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">gty</span><span class="plain-syntax">-></span><span class="element-syntax">first_type</span><span class="plain-syntax"> = </span><span class="identifier-syntax">spec</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">gty</span><span class="plain-syntax">-></span><span class="element-syntax">first_multiplicity</span><span class="plain-syntax"> = </span><span class="identifier-syntax">multiple_flag</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">10</span><span class="plain-syntax">*</span><span class="identifier-syntax">score</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="constant-syntax">1</span><span class="plain-syntax">:</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">gty</span><span class="plain-syntax">-></span><span class="element-syntax">second_type</span><span class="plain-syntax"> = </span><span class="identifier-syntax">spec</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">gty</span><span class="plain-syntax">-></span><span class="element-syntax">second_multiplicity</span><span class="plain-syntax"> = </span><span class="identifier-syntax">multiple_flag</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">score</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="constant-syntax">2</span><span class="plain-syntax">:</span>
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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_ThreeValuedLine</span><span class="plain-syntax">),</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"there can be at most two varying parts to a line of grammar"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"so 'put [something] in [a container]' is allowed but 'put "</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"[something] in [something] beside [a door]' is not."</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="constant-syntax">0</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">PL::Parsing::Tokens::Types::has_return_type</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">PL::Parsing::Tokens::Types::has_return_type</span></span>:<br/>Grammar Verbs - <a href="5-gv.html#SP24">§24</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">grammar_type</span><span class="plain-syntax"> *</span><span class="identifier-syntax">gty</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">gty</span><span class="plain-syntax">-></span><span class="element-syntax">no_resulting_values</span><span class="plain-syntax"> == -1) </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">int</span><span class="plain-syntax"> </span><span class="function-syntax">PL::Parsing::Tokens::Types::get_no_resulting_values</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">PL::Parsing::Tokens::Types::get_no_resulting_values</span></span>:<br/>Grammar Lines - <a href="5-gl.html#SP14">§14</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">grammar_type</span><span class="plain-syntax"> *</span><span class="identifier-syntax">gty</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">gty</span><span class="plain-syntax">-></span><span class="element-syntax">no_resulting_values</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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<span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="function-syntax">PL::Parsing::Tokens::Types::get_single_type</span><button class="popup" onclick="togglePopup('usagePopup5')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup5">Usage of <span class="code-font"><span class="function-syntax">PL::Parsing::Tokens::Types::get_single_type</span></span>:<br/>Grammar Verbs - <a href="5-gv.html#SP24">§24</a><br/>Grammar Lines - <a href="5-gl.html#SP14">§14</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">grammar_type</span><span class="plain-syntax"> *</span><span class="identifier-syntax">gty</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">gty</span><span class="plain-syntax">-></span><span class="element-syntax">no_resulting_values</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="constant-syntax">0</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">case</span><span class="plain-syntax"> </span><span class="constant-syntax">1</span><span class="plain-syntax">: </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">gty</span><span class="plain-syntax">-></span><span class="element-syntax">first_type</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">default:</span><span class="plain-syntax"> </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"gty improperly typed"</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">NULL</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">PL::Parsing::Tokens::Types::set_single_type</span><button class="popup" onclick="togglePopup('usagePopup6')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup6">Usage of <span class="code-font"><span class="function-syntax">PL::Parsing::Tokens::Types::set_single_type</span></span>:<br/>Grammar Verbs - <a href="5-gv.html#SP24">§24</a><br/>Grammar Lines - <a href="5-gl.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">grammar_type</span><span class="plain-syntax"> *</span><span class="identifier-syntax">gty</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>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">spec</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">gty</span><span class="plain-syntax">-></span><span class="element-syntax">no_resulting_values</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">gty</span><span class="plain-syntax">-></span><span class="element-syntax">no_resulting_values</span><span class="plain-syntax"> = </span><span class="constant-syntax">1</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">gty</span><span class="plain-syntax">-></span><span class="element-syntax">first_type</span><span class="plain-syntax"> = </span><span class="identifier-syntax">spec</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">PL::Parsing::Tokens::Types::compile_to_string</span><button class="popup" onclick="togglePopup('usagePopup7')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup7">Usage of <span class="code-font"><span class="function-syntax">PL::Parsing::Tokens::Types::compile_to_string</span></span>:<br/>Grammar Lines - <a href="5-gl.html#SP19">§19</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">grammar_type</span><span class="plain-syntax"> *</span><span class="identifier-syntax">gty</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Specifications::Compiler::emit_as_val</span><span class="plain-syntax">(</span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">gty</span><span class="plain-syntax">-></span><span class="element-syntax">first_type</span><span class="plain-syntax">);</span>
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<span class="plain-syntax">}</span>
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<span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="function-syntax">PL::Parsing::Tokens::Types::get_data_type_as_token</span><button class="popup" onclick="togglePopup('usagePopup8')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup8">Usage of <span class="code-font"><span class="function-syntax">PL::Parsing::Tokens::Types::get_data_type_as_token</span></span>:<br/>Grammar Verbs - <a href="5-gv.html#SP20">§20</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">grammar_type</span><span class="plain-syntax"> *</span><span class="identifier-syntax">gty</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">gty</span><span class="plain-syntax">-></span><span class="element-syntax">no_resulting_values</span><span class="plain-syntax"> > </span><span class="constant-syntax">0</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">Node::is</span><span class="plain-syntax">(</span><span class="identifier-syntax">gty</span><span class="plain-syntax">-></span><span class="element-syntax">first_type</span><span class="plain-syntax">, </span><span class="identifier-syntax">CONSTANT_NT</span><span class="plain-syntax">)) ||</span>
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<span class="plain-syntax"> (</span><span class="identifier-syntax">Specifications::is_description</span><span class="plain-syntax">(</span><span class="identifier-syntax">gty</span><span class="plain-syntax">-></span><span class="element-syntax">first_type</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">Specifications::to_kind</span><span class="plain-syntax">(</span><span class="identifier-syntax">gty</span><span class="plain-syntax">-></span><span class="element-syntax">first_type</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">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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<p class="commentary firstcommentary"><a id="SP4" class="paragraph-anchor"></a><b>§4. </b>The behaviour of this sorting routine is documented in the discussion
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of GL sorting in "Grammar Lines". Do not amend it without changing that
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discussion.
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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">PL::Parsing::Tokens::Types::must_precede</span><button class="popup" onclick="togglePopup('usagePopup9')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup9">Usage of <span class="code-font"><span class="function-syntax">PL::Parsing::Tokens::Types::must_precede</span></span>:<br/>Grammar Lines - <a href="5-gl.html#SP16">§16</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">grammar_type</span><span class="plain-syntax"> *</span><span class="identifier-syntax">gty1</span><span class="plain-syntax">, </span><span class="reserved-syntax">grammar_type</span><span class="plain-syntax"> *</span><span class="identifier-syntax">gty2</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">cs</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">gty1</span><span class="plain-syntax">-></span><span class="element-syntax">no_resulting_values</span><span class="plain-syntax">) < (</span><span class="identifier-syntax">gty2</span><span class="plain-syntax">-></span><span class="element-syntax">no_resulting_values</span><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">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">gty1</span><span class="plain-syntax">-></span><span class="element-syntax">no_resulting_values</span><span class="plain-syntax">) > (</span><span class="identifier-syntax">gty2</span><span class="plain-syntax">-></span><span class="element-syntax">no_resulting_values</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">gty1</span><span class="plain-syntax">-></span><span class="element-syntax">no_resulting_values</span><span class="plain-syntax"> == </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NOT_APPLICABLE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">cs</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Specifications::compare_specificity</span><span class="plain-syntax">(</span><span class="identifier-syntax">gty1</span><span class="plain-syntax">-></span><span class="element-syntax">first_type</span><span class="plain-syntax">, </span><span class="identifier-syntax">gty2</span><span class="plain-syntax">-></span><span class="element-syntax">first_type</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">cs</span><span class="plain-syntax"> == </span><span class="constant-syntax">1</span><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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">cs</span><span class="plain-syntax"> == -1) </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">gty1</span><span class="plain-syntax">-></span><span class="element-syntax">first_multiplicity</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">gty2</span><span class="plain-syntax">-></span><span class="element-syntax">first_multiplicity</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">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">gty1</span><span class="plain-syntax">-></span><span class="element-syntax">first_multiplicity</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">gty2</span><span class="plain-syntax">-></span><span class="element-syntax">first_multiplicity</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">gty1</span><span class="plain-syntax">-></span><span class="element-syntax">no_resulting_values</span><span class="plain-syntax"> == </span><span class="constant-syntax">1</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NOT_APPLICABLE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">cs</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Specifications::compare_specificity</span><span class="plain-syntax">(</span><span class="identifier-syntax">gty1</span><span class="plain-syntax">-></span><span class="element-syntax">second_type</span><span class="plain-syntax">, </span><span class="identifier-syntax">gty2</span><span class="plain-syntax">-></span><span class="element-syntax">second_type</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">cs</span><span class="plain-syntax"> == </span><span class="constant-syntax">1</span><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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">cs</span><span class="plain-syntax"> == -1) </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">gty1</span><span class="plain-syntax">-></span><span class="element-syntax">second_multiplicity</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">gty2</span><span class="plain-syntax">-></span><span class="element-syntax">second_multiplicity</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">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">gty1</span><span class="plain-syntax">-></span><span class="element-syntax">second_multiplicity</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">gty2</span><span class="plain-syntax">-></span><span class="element-syntax">second_multiplicity</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">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NOT_APPLICABLE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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