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<li><a href="../../../inweb/index.html">inweb</a></li>
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<li><a href="../../../intest/index.html">intest</a></li>
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<main role="main">
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<!--Weave of 'Inclusions' 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="../inbuildn.html">Inbuild Modules</a></li><li><a href="index.html">supervisor</a></li><li><a href="index.html#6">Chapter 6: Inform Source Text</a></li><li><b>Inclusions</b></li></ul></div>
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<p class="purpose">To fulfill requests to include extensions, adding their material to the parse tree as needed, and removing INCLUDE nodes.</p>
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<ul class="toc"><li><a href="6-inc.html#SP5">§5. Extension loading</a></li><li><a href="6-inc.html#SP7">§7. Checking the begins here and ends here sentences</a></li></ul><hr class="tocbar">
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. </b>Our main task here is to look through the syntax tree for <span class="extract"><span class="extract-syntax">INCLUDE_NT</span></span>
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nodes, which are requests to include an extension, and replace them with
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syntax trees for the extensions in question.
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</p>
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<p class="commentary">This process is repeated until there are no <span class="extract"><span class="extract-syntax">INCLUDE_NT</span></span> nodes left.
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In principle this could go on forever if A includes B which includes A, or
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some such, but we log each extension read in to ensure that nothing is
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read twice.
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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">inbuild_copy</span><span class="plain-syntax"> *</span><span class="identifier-syntax">inclusions_errors_to</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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<span class="reserved-syntax">inform_project</span><span class="plain-syntax"> *</span><span class="identifier-syntax">inclusions_for_project</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Inclusions::traverse</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">Inclusions::traverse</span></span>:<br/>Extension Services - <a href="5-es.html#SP6">§6</a><br/>Project Services - <a href="5-ps2.html#SP29_4">§29.4</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inbuild_copy</span><span class="plain-syntax"> *</span><span class="identifier-syntax">C</span><span class="plain-syntax">, </span><span class="identifier-syntax">parse_node_tree</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="identifier-syntax">inclusions_errors_to</span><span class="plain-syntax"> = </span><span class="identifier-syntax">C</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">no_copy_errors</span><span class="plain-syntax"> = </span><span class="identifier-syntax">LinkedLists::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">-></span><span class="element-syntax">errors_reading_source_text</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">inform_project</span><span class="plain-syntax"> *</span><span class="identifier-syntax">project</span><span class="plain-syntax"> = </span><a href="4-pbm.html#SP2" class="function-link"><span class="function-syntax">ProjectBundleManager::from_copy</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">project</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">project</span><span class="plain-syntax"> = </span><a href="4-pfm.html#SP2" class="function-link"><span class="function-syntax">ProjectFileManager::from_copy</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">inclusions_for_project</span><span class="plain-syntax"> = </span><span class="identifier-syntax">project</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">includes_cleared</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">do</span><span class="plain-syntax"> {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">includes_cleared</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">LinkedLists::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">-></span><span class="element-syntax">errors_reading_source_text</span><span class="plain-syntax">) > </span><span class="identifier-syntax">no_copy_errors</span><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="identifier-syntax">SyntaxTree::traverse_headingwise</span><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><a href="6-inc.html#SP1" class="function-link"><span class="function-syntax">Inclusions::visit</span></a><span class="plain-syntax">, &</span><span class="identifier-syntax">includes_cleared</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> } </span><span class="reserved-syntax">while</span><span class="plain-syntax"> (</span><span class="identifier-syntax">includes_cleared</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">inclusions_errors_to</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">build_vertex</span><span class="plain-syntax"> *</span><span class="function-syntax">Inclusions::spawned_from_vertex</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">Inclusions::spawned_from_vertex</span></span>:<br/><a href="6-inc.html#SP1_1">§1.1</a>, <a href="6-inc.html#SP5_1">§5.1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">H0</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">H0</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ext</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Node::get_inclusion_of_extension</span><span class="plain-syntax">(</span><span class="identifier-syntax">H0</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">ext</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">ext</span><span class="plain-syntax">-></span><span class="element-syntax">as_copy</span><span class="plain-syntax">-></span><span class="element-syntax">vertex</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">inclusions_errors_to</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 H0 ext or inclusion"</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">inclusions_errors_to</span><span class="plain-syntax">-></span><span class="identifier-syntax">vertex</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">Inclusions::visit</span><span class="plain-syntax">(</span><span class="identifier-syntax">parse_node_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">pn</span><span class="plain-syntax">, </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">last_H0</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">includes_cleared</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::get_type</span><span class="plain-syntax">(</span><span class="identifier-syntax">pn</span><span class="plain-syntax">) == </span><span class="identifier-syntax">INCLUDE_NT</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="6-inc.html#SP1_1" class="named-paragraph-link"><span class="named-paragraph">Replace INCLUDE node with sentence nodes for any extensions required</span><span class="named-paragraph-number">1.1</span></a></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> *</span><span class="identifier-syntax">includes_cleared</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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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP1_1" class="paragraph-anchor"></a><b>§1.1. </b>The INCLUDE node becomes an INCLUSION, which in turn contains the extension's code.
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</p>
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<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Replace INCLUDE node with sentence nodes for any extensions required</span><span class="named-paragraph-number">1.1</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="reserved-syntax">if</span><span class="plain-syntax"> (!(</span><span class="function-syntax"><structural-sentence></span><span class="plain-syntax">(</span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">pn</span><span class="plain-syntax">))))</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"malformed INCLUDE"</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">title</span><span class="plain-syntax"> = </span><span class="identifier-syntax">GET_RW</span><span class="plain-syntax">(</span><span class="function-syntax"><structural-sentence></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">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">author</span><span class="plain-syntax"> = </span><span class="identifier-syntax">GET_RW</span><span class="plain-syntax">(</span><span class="function-syntax"><structural-sentence></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">Node::set_type</span><span class="plain-syntax">(</span><span class="identifier-syntax">pn</span><span class="plain-syntax">, </span><span class="identifier-syntax">INCLUSION_NT</span><span class="plain-syntax">); </span><span class="identifier-syntax">pn</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="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">l</span><span class="plain-syntax"> = </span><span class="identifier-syntax">SyntaxTree::push_bud</span><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><span class="identifier-syntax">pn</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><a href="6-inc.html#SP4" class="function-link"><span class="function-syntax">Inclusions::fulfill_request_to_include_extension</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">last_H0</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">title</span><span class="plain-syntax">, </span><span class="identifier-syntax">author</span><span class="plain-syntax">, </span><span class="identifier-syntax">inclusions_for_project</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">SyntaxTree::pop_bud</span><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><span class="identifier-syntax">l</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">E</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">c</span><span class="plain-syntax"> = </span><span class="identifier-syntax">pn</span><span class="plain-syntax">-></span><span class="identifier-syntax">down</span><span class="plain-syntax">; </span><span class="identifier-syntax">c</span><span class="plain-syntax">; </span><span class="identifier-syntax">c</span><span class="plain-syntax"> = </span><span class="identifier-syntax">c</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="identifier-syntax">Node::get_type</span><span class="plain-syntax">(</span><span class="identifier-syntax">c</span><span class="plain-syntax">) == </span><span class="identifier-syntax">HEADING_NT</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Node::set_inclusion_of_extension</span><span class="plain-syntax">(</span><span class="identifier-syntax">c</span><span class="plain-syntax">, </span><span class="identifier-syntax">E</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">last_H0</span><span class="plain-syntax">) &&</span>
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<span class="plain-syntax"> (</span><span class="identifier-syntax">Annotations::read_int</span><span class="plain-syntax">(</span><span class="identifier-syntax">last_H0</span><span class="plain-syntax">, </span><span class="identifier-syntax">implied_heading_ANNOT</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">build_vertex</span><span class="plain-syntax"> *</span><span class="identifier-syntax">V</span><span class="plain-syntax"> = </span><a href="6-inc.html#SP1" class="function-link"><span class="function-syntax">Inclusions::spawned_from_vertex</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">last_H0</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">build_vertex</span><span class="plain-syntax"> *</span><span class="identifier-syntax">EV</span><span class="plain-syntax"> = </span><span class="identifier-syntax">E</span><span class="plain-syntax">-></span><span class="element-syntax">as_copy</span><span class="plain-syntax">-></span><span class="element-syntax">vertex</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">V</span><span class="plain-syntax">-></span><span class="element-syntax">as_copy</span><span class="plain-syntax">-></span><span class="element-syntax">edition</span><span class="plain-syntax">-></span><span class="element-syntax">work</span><span class="plain-syntax">-></span><span class="element-syntax">genre</span><span class="plain-syntax"> == </span><span class="identifier-syntax">extension_genre</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><a href="3-bg.html#SP4" class="function-link"><span class="function-syntax">Graphs::need_this_to_use</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">V</span><span class="plain-syntax">, </span><span class="identifier-syntax">EV</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><a href="3-bg.html#SP4" class="function-link"><span class="function-syntax">Graphs::need_this_to_build</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">V</span><span class="plain-syntax">, </span><span class="identifier-syntax">EV</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="6-inc.html#SP1">§1</a>.</li></ul>
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<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. </b>Here we parse the content of an Include sentence: i.e., what comes after the
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word "Include", which might e.g. be "Locksmith by Emily Short".
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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"><extension-title-and-version></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">version</span><span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><extension-version></span><span class="Preform-plain-syntax"> </span><span class="Preform-constant-syntax">of</span><span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><definite-article></span><span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><extension-unversioned></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"> { pass 1 }</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-constant-syntax">version</span><span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><extension-version></span><span class="Preform-plain-syntax"> </span><span class="Preform-constant-syntax">of</span><span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><extension-unversioned></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"> { pass 1 }</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><definite-article></span><span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><extension-unversioned></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"> { -1, - }</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><extension-unversioned></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> { -1, - }</span>
|
|
|
|
<span class="Preform-function-syntax"><extension-unversioned></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">::=</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><extension-unversioned-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"> </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"> { 0, - }</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax"><extension-unversioned-inner></span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">==></span><span class="Preform-plain-syntax"> { 0, - }</span>
|
|
|
|
<span class="Preform-function-syntax"><extension-unversioned-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"><quoted-text></span><span class="Preform-plain-syntax"> </span><span class="Preform-constant-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"> </span><span class="named-paragraph-container code-font"><a href="6-inc.html#SP2_1" class="named-paragraph-link"><span class="named-paragraph">Issue PM_IncludeExtQuoted problem</span><span class="named-paragraph-number">2.1</span></a></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, -, <<t1>> = Wordings::first_wn(W), <<t2>> = Wordings::last_wn(W) }</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="SP2_1" class="paragraph-anchor"></a><b>§2.1. </b>Quite a popular mistake, this:
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Issue PM_IncludeExtQuoted problem</span><span class="named-paragraph-number">2.1</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="function-syntax"><<t1>></span><span class="plain-syntax"> = -1; </span><span class="function-syntax"><<t2>></span><span class="plain-syntax"> = -1;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">copy_error</span><span class="plain-syntax"> *</span><span class="identifier-syntax">CE</span><span class="plain-syntax"> = </span><a href="2-ce.html#SP2" class="function-link"><span class="function-syntax">CopyErrors::new</span></a><span class="plain-syntax">(</span><span class="constant-syntax">SYNTAX_CE</span><span class="plain-syntax">, </span><span class="constant-syntax">IncludeExtQuoted_SYNERROR</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-ce.html#SP3" class="function-link"><span class="function-syntax">CopyErrors::supply_node</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">CE</span><span class="plain-syntax">, </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-cps.html#SP5" class="function-link"><span class="function-syntax">Copies::attach_error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inclusions_errors_to</span><span class="plain-syntax">, </span><span class="identifier-syntax">CE</span><span class="plain-syntax">);</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="6-inc.html#SP2">§2</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>§3. </b>This nonterminal parses text which will probably be something like "3.14" or
|
|
"12/110410", but at this stage it accepts anything: actual parsing comes later.
|
|
</p>
|
|
|
|
<pre class="Preform-displayed-code all-displayed-code code-font">
|
|
<span class="Preform-function-syntax"><extension-version></span><span class="Preform-plain-syntax"> </span><span class="Preform-constant-syntax">internal</span><span class="Preform-plain-syntax"> </span><span class="Preform-constant-syntax">1</span><span class="Preform-plain-syntax"> </span><span class="Preform-constant-syntax">{</span>
|
|
<span class="Preform-plain-syntax"> ==> { </span><span class="Preform-identifier-syntax">Wordings::first_wn</span><span class="Preform-plain-syntax">(</span><span class="Preform-identifier-syntax">W</span><span class="Preform-plain-syntax">), - };</span>
|
|
<span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">return</span><span class="Preform-plain-syntax"> </span><span class="Preform-identifier-syntax">TRUE</span><span class="Preform-plain-syntax">;</span>
|
|
<span class="Preform-plain-syntax">}</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="SP4" class="paragraph-anchor"></a><b>§4. </b></p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="function-syntax">Inclusions::fulfill_request_to_include_extension</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">Inclusions::fulfill_request_to_include_extension</span></span>:<br/><a href="6-inc.html#SP1_1">§1.1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">last_H0</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">TW</span><span class="plain-syntax">, </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">AW</span><span class="plain-syntax">, </span><span class="reserved-syntax">inform_project</span><span class="plain-syntax"> *</span><span class="identifier-syntax">for_project</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="function-syntax"><<t1>></span><span class="plain-syntax"> = -1; </span><span class="function-syntax"><<t2>></span><span class="plain-syntax"> = -1;</span>
|
|
<span class="plain-syntax"> </span><span class="function-syntax"><extension-title-and-version></span><span class="plain-syntax">(</span><span class="identifier-syntax">TW</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">W</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Wordings::new</span><span class="plain-syntax">(</span><span class="function-syntax"><<t1>></span><span class="plain-syntax">, </span><span class="function-syntax"><<t2>></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">version_word</span><span class="plain-syntax"> = </span><span class="function-syntax"><<r>></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">Wordings::nonempty</span><span class="plain-syntax">(</span><span class="identifier-syntax">W</span><span class="plain-syntax">)) </span><span class="named-paragraph-container code-font"><a href="6-inc.html#SP4_1" class="named-paragraph-link"><span class="named-paragraph">Fulfill request to include a single extension</span><span class="named-paragraph-number">4.1</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">E</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP4_1" class="paragraph-anchor"></a><b>§4.1. </b>A request consists of author, name and version, the latter being optional.
|
|
We obtain the extension file structure corresponding to this: it may have
|
|
no text at all (for instance if Inform could not open the file), or it may be
|
|
one we have seen before, thanks to an earlier inclusion. Only when it
|
|
provided genuinely new text will its <span class="extract"><span class="extract-syntax">body_text_unbroken</span></span> flag be set,
|
|
and then we call the sentence-breaker to graft the new material on to the
|
|
parse tree.
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Fulfill request to include a single extension</span><span class="named-paragraph-number">4.1</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">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">exft</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">exfa</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">exft</span><span class="plain-syntax">, </span><span class="string-syntax">"%+W"</span><span class="plain-syntax">, </span><span class="identifier-syntax">W</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">exfa</span><span class="plain-syntax">, </span><span class="string-syntax">"%+W"</span><span class="plain-syntax">, </span><span class="identifier-syntax">AW</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inbuild_work</span><span class="plain-syntax"> *</span><span class="identifier-syntax">work</span><span class="plain-syntax"> = </span><a href="2-wrk.html#SP2" class="function-link"><span class="function-syntax">Works::new</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">extension_genre</span><span class="plain-syntax">, </span><span class="identifier-syntax">exft</span><span class="plain-syntax">, </span><span class="identifier-syntax">exfa</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">semantic_version_number</span><span class="plain-syntax"> </span><span class="identifier-syntax">V</span><span class="plain-syntax"> = </span><span class="identifier-syntax">VersionNumbers::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="identifier-syntax">version_word</span><span class="plain-syntax"> >= </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="identifier-syntax">V</span><span class="plain-syntax"> = </span><a href="6-inc.html#SP6" class="function-link"><span class="function-syntax">Inclusions::parse_version</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">version_word</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">semver_range</span><span class="plain-syntax"> *</span><span class="identifier-syntax">R</span><span class="plain-syntax"> = </span><span class="identifier-syntax">VersionNumberRanges::compatibility_range</span><span class="plain-syntax">(</span><span class="identifier-syntax">V</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inbuild_requirement</span><span class="plain-syntax"> *</span><span class="identifier-syntax">req</span><span class="plain-syntax"> = </span><a href="2-rqr.html#SP2" class="function-link"><span class="function-syntax">Requirements::new</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">work</span><span class="plain-syntax">, </span><span class="identifier-syntax">R</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">exft</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">exfa</span><span class="plain-syntax">)</span>
|
|
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><a href="6-inc.html#SP5" class="function-link"><span class="function-syntax">Inclusions::load</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">last_H0</span><span class="plain-syntax">, </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">, </span><span class="identifier-syntax">req</span><span class="plain-syntax">, </span><span class="identifier-syntax">for_project</span><span class="plain-syntax">);</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="6-inc.html#SP4">§4</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>§5. Extension loading. </b>Note that we ignore a request for an extension which has already been
|
|
loaded, except if the new request ups the ante in terms of the minimum
|
|
version permitted: in which case we need to record that the requirement has
|
|
been tightened. That is, if we previously wanted version 2 of Pantomime
|
|
Sausages by Mr Punch, and loaded it, but then read the sentence
|
|
</p>
|
|
|
|
<blockquote>
|
|
<p>Include version 3 of Pantomime Sausages by Mr Punch.</p>
|
|
</blockquote>
|
|
|
|
<p class="commentary">then we need to note that the version requirement on PS has been raised to 3.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="function-syntax">Inclusions::load</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">Inclusions::load</span></span>:<br/><a href="6-inc.html#SP4_1">§4.1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">last_H0</span><span class="plain-syntax">, </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">at</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inbuild_requirement</span><span class="plain-syntax"> *</span><span class="identifier-syntax">req</span><span class="plain-syntax">, </span><span class="reserved-syntax">inform_project</span><span class="plain-syntax"> *</span><span class="identifier-syntax">for_project</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="identifier-syntax">E</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">LOOP_OVER</span><span class="plain-syntax">(</span><span class="identifier-syntax">E</span><span class="plain-syntax">, </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><a href="2-rqr.html#SP7" class="function-link"><span class="function-syntax">Requirements::meets</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">E</span><span class="plain-syntax">-></span><span class="element-syntax">as_copy</span><span class="plain-syntax">-></span><span class="element-syntax">edition</span><span class="plain-syntax">, </span><span class="identifier-syntax">req</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="2-cps.html#SP7" class="function-link"><span class="function-syntax">Copies::source_text_has_been_read</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">E</span><span class="plain-syntax">-></span><span class="element-syntax">as_copy</span><span class="plain-syntax">))) {</span>
|
|
<span class="plain-syntax"> </span><a href="5-es.html#SP15" class="function-link"><span class="function-syntax">Extensions::must_satisfy</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">E</span><span class="plain-syntax">, </span><span class="identifier-syntax">req</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">E</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="6-inc.html#SP5_1" class="named-paragraph-link"><span class="named-paragraph">Read the extension file into the lexer, and break it into body and documentation</span><span class="named-paragraph-number">5.1</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">for_project</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">E</span><span class="plain-syntax">))</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">ADD_TO_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">E</span><span class="plain-syntax">, </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax">, </span><span class="identifier-syntax">for_project</span><span class="plain-syntax">-></span><span class="element-syntax">extensions_included</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">E</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><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Read the extension file into the lexer, and break it into body and documentation</span><span class="named-paragraph-number">5.1</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">inbuild_search_result</span><span class="plain-syntax"> *</span><span class="identifier-syntax">search_result</span><span class="plain-syntax"> =</span>
|
|
<span class="plain-syntax"> </span><a href="2-nst.html#SP8" class="function-link"><span class="function-syntax">Nests::search_for_best</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">req</span><span class="plain-syntax">, </span><a href="5-ps2.html#SP6" class="function-link"><span class="function-syntax">Projects::nest_list</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">for_project</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">search_result</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><a href="4-em.html#SP4" class="function-link"><span class="function-syntax">ExtensionManager::from_copy</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">search_result</span><span class="plain-syntax">-></span><span class="element-syntax">copy</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="5-es.html#SP13" class="function-link"><span class="function-syntax">Extensions::set_inclusion_sentence</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">E</span><span class="plain-syntax">, </span><span class="identifier-syntax">at</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="5-es.html#SP4" class="function-link"><span class="function-syntax">Extensions::set_associated_project</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">E</span><span class="plain-syntax">, </span><span class="identifier-syntax">for_project</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-nst.html#SP2" class="function-link"><span class="function-syntax">Nests::get_tag</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">search_result</span><span class="plain-syntax">-></span><span class="element-syntax">nest</span><span class="plain-syntax">) == </span><span class="constant-syntax">INTERNAL_NEST_TAG</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">E</span><span class="plain-syntax">-></span><span class="element-syntax">loaded_from_built_in_area</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">compatibility_specification</span><span class="plain-syntax"> *</span><span class="identifier-syntax">C</span><span class="plain-syntax"> = </span><span class="identifier-syntax">E</span><span class="plain-syntax">-></span><span class="element-syntax">as_copy</span><span class="plain-syntax">-></span><span class="element-syntax">edition</span><span class="plain-syntax">-></span><span class="element-syntax">compatibility</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">Compatibility::test</span><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">, </span><a href="1-ic.html#SP9" class="function-link"><span class="function-syntax">Supervisor::current_vm</span></a><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="6-inc.html#SP5_1_1" class="named-paragraph-link"><span class="named-paragraph">Issue a problem message saying that the VM does not meet requirements</span><span class="named-paragraph-number">5.1.1</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">LinkedLists::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">search_result</span><span class="plain-syntax">-></span><span class="element-syntax">copy</span><span class="plain-syntax">-></span><span class="element-syntax">errors_reading_source_text</span><span class="plain-syntax">) == </span><span class="constant-syntax">0</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="2-cps.html#SP7" class="function-link"><span class="function-syntax">Copies::get_source_text</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">search_result</span><span class="plain-syntax">-></span><span class="element-syntax">copy</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> #</span><span class="identifier-syntax">ifndef</span><span class="plain-syntax"> </span><span class="identifier-syntax">CORE_MODULE</span>
|
|
<span class="plain-syntax"> </span><a href="2-cps.html#SP5" class="function-link"><span class="function-syntax">Copies::list_attached_errors</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">STDERR</span><span class="plain-syntax">, </span><span class="identifier-syntax">search_result</span><span class="plain-syntax">-></span><span class="element-syntax">copy</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> #</span><span class="identifier-syntax">endif</span>
|
|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
|
|
<span class="plain-syntax"> #</span><span class="identifier-syntax">ifdef</span><span class="plain-syntax"> </span><span class="identifier-syntax">CORE_MODULE</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="6-inc.html#SP5_1_2" class="named-paragraph-link"><span class="named-paragraph">Issue a cannot-find problem</span><span class="named-paragraph-number">5.1.2</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> #</span><span class="identifier-syntax">endif</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">build_vertex</span><span class="plain-syntax"> *</span><span class="identifier-syntax">RV</span><span class="plain-syntax"> = </span><a href="3-bg.html#SP2" class="function-link"><span class="function-syntax">Graphs::req_vertex</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">req</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">build_vertex</span><span class="plain-syntax"> *</span><span class="identifier-syntax">V</span><span class="plain-syntax"> = </span><a href="6-inc.html#SP1" class="function-link"><span class="function-syntax">Inclusions::spawned_from_vertex</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">last_H0</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-bg.html#SP4" class="function-link"><span class="function-syntax">Graphs::need_this_to_build</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">V</span><span class="plain-syntax">, </span><span class="identifier-syntax">RV</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="6-inc.html#SP5">§5</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_1_1" class="paragraph-anchor"></a><b>§5.1.1. </b>Here the problem is not that the extension is broken in some way: it's
|
|
just not what we can currently use. Therefore the correction should be a
|
|
matter of removing the inclusion, not of altering the extension, so we
|
|
report this problem at the inclusion line.
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Issue a problem message saying that the VM does not meet requirements</span><span class="named-paragraph-number">5.1.1</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">copy_error</span><span class="plain-syntax"> *</span><span class="identifier-syntax">CE</span><span class="plain-syntax"> = </span><a href="2-ce.html#SP2" class="function-link"><span class="function-syntax">CopyErrors::new_T</span></a><span class="plain-syntax">(</span><span class="constant-syntax">SYNTAX_CE</span><span class="plain-syntax">, </span><span class="constant-syntax">ExtInadequateVM_SYNERROR</span><span class="plain-syntax">, </span><span class="identifier-syntax">C</span><span class="plain-syntax">-></span><span class="identifier-syntax">parsed_from</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-ce.html#SP3" class="function-link"><span class="function-syntax">CopyErrors::supply_node</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">CE</span><span class="plain-syntax">, </span><a href="5-es.html#SP13" class="function-link"><span class="function-syntax">Extensions::get_inclusion_sentence</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">E</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><a href="2-cps.html#SP5" class="function-link"><span class="function-syntax">Copies::attach_error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inclusions_errors_to</span><span class="plain-syntax">, </span><span class="identifier-syntax">CE</span><span class="plain-syntax">);</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="6-inc.html#SP5_1">§5.1</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_1_2" class="paragraph-anchor"></a><b>§5.1.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Issue a cannot-find problem</span><span class="named-paragraph-number">5.1.2</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">inbuild_requirement</span><span class="plain-syntax"> *</span><span class="identifier-syntax">req2</span><span class="plain-syntax"> = </span><a href="2-rqr.html#SP2" class="function-link"><span class="function-syntax">Requirements::any_version_of</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">req</span><span class="plain-syntax">-></span><span class="element-syntax">work</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">L</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NEW_LINKED_LIST</span><span class="plain-syntax">(</span><span class="reserved-syntax">inbuild_search_result</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-nst.html#SP7" class="function-link"><span class="function-syntax">Nests::search_for</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">req2</span><span class="plain-syntax">, </span><a href="5-ps2.html#SP6" class="function-link"><span class="function-syntax">Projects::nest_list</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">for_project</span><span class="plain-syntax">), </span><span class="identifier-syntax">L</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">LinkedLists::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">L</span><span class="plain-syntax">) == </span><span class="constant-syntax">0</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">copy_error</span><span class="plain-syntax"> *</span><span class="identifier-syntax">CE</span><span class="plain-syntax"> = </span><a href="2-ce.html#SP2" class="function-link"><span class="function-syntax">CopyErrors::new</span></a><span class="plain-syntax">(</span><span class="constant-syntax">SYNTAX_CE</span><span class="plain-syntax">, </span><span class="constant-syntax">BogusExtension_SYNERROR</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-ce.html#SP3" class="function-link"><span class="function-syntax">CopyErrors::supply_node</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">CE</span><span class="plain-syntax">, </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-cps.html#SP5" class="function-link"><span class="function-syntax">Copies::attach_error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inclusions_errors_to</span><span class="plain-syntax">, </span><span class="identifier-syntax">CE</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">versions</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inbuild_search_result</span><span class="plain-syntax"> *</span><span class="identifier-syntax">search_result</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">search_result</span><span class="plain-syntax">, </span><span class="reserved-syntax">inbuild_search_result</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</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">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">versions</span><span class="plain-syntax">) > </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">versions</span><span class="plain-syntax">, </span><span class="string-syntax">" or "</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">semantic_version_number</span><span class="plain-syntax"> </span><span class="identifier-syntax">V</span><span class="plain-syntax"> = </span><span class="identifier-syntax">search_result</span><span class="plain-syntax">-></span><span class="element-syntax">copy</span><span class="plain-syntax">-></span><span class="element-syntax">edition</span><span class="plain-syntax">-></span><span class="element-syntax">version</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">VersionNumbers::is_null</span><span class="plain-syntax">(</span><span class="identifier-syntax">V</span><span class="plain-syntax">)) </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">versions</span><span class="plain-syntax">, </span><span class="string-syntax">"an unnumbered version"</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">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">versions</span><span class="plain-syntax">, </span><span class="string-syntax">"version %v"</span><span class="plain-syntax">, &</span><span class="identifier-syntax">V</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">copy_error</span><span class="plain-syntax"> *</span><span class="identifier-syntax">CE</span><span class="plain-syntax"> = </span><a href="2-ce.html#SP2" class="function-link"><span class="function-syntax">CopyErrors::new_T</span></a><span class="plain-syntax">(</span><span class="constant-syntax">SYNTAX_CE</span><span class="plain-syntax">, </span><span class="constant-syntax">ExtVersionTooLow_SYNERROR</span><span class="plain-syntax">, </span><span class="identifier-syntax">versions</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-ce.html#SP3" class="function-link"><span class="function-syntax">CopyErrors::supply_node</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">CE</span><span class="plain-syntax">, </span><span class="identifier-syntax">at</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-cps.html#SP5" class="function-link"><span class="function-syntax">Copies::attach_error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inclusions_errors_to</span><span class="plain-syntax">, </span><span class="identifier-syntax">CE</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">versions</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="6-inc.html#SP5_1">§5.1</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP6" class="paragraph-anchor"></a><b>§6. </b></p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">last_PM_ExtVersionMalformed_at</span><span class="plain-syntax"> = -1;</span>
|
|
<span class="identifier-syntax">semantic_version_number</span><span class="plain-syntax"> </span><span class="function-syntax">Inclusions::parse_version</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">Inclusions::parse_version</span></span>:<br/><a href="6-inc.html#SP4_1">§4.1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">vwn</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">semantic_version_number</span><span class="plain-syntax"> </span><span class="identifier-syntax">V</span><span class="plain-syntax"> = </span><span class="identifier-syntax">VersionNumbers::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">W</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Wordings::one_word</span><span class="plain-syntax">(</span><span class="identifier-syntax">vwn</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"><version-number></span><span class="plain-syntax">(</span><span class="identifier-syntax">W</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">semantic_version_number_holder</span><span class="plain-syntax"> *</span><span class="identifier-syntax">H</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">semantic_version_number_holder</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">V</span><span class="plain-syntax"> = </span><span class="identifier-syntax">H</span><span class="plain-syntax">-></span><span class="element-syntax">version</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="named-paragraph-container code-font"><a href="6-inc.html#SP6_1" class="named-paragraph-link"><span class="named-paragraph">Issue a problem message for a malformed version number</span><span class="named-paragraph-number">6.1</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">V</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP6_1" class="paragraph-anchor"></a><b>§6.1. </b>Because we tend to call <span class="extract"><span class="extract-syntax">Inclusions::parse_version</span></span> repeatedly on
|
|
the same word, we want to recover tidily from this problem, and not report it
|
|
over and over. We do this by altering the text to <span class="extract"><span class="extract-syntax">1</span></span>, the lowest well-formed
|
|
version number text.
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Issue a problem message for a malformed version number</span><span class="named-paragraph-number">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="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">last_PM_ExtVersionMalformed_at</span><span class="plain-syntax"> != </span><span class="identifier-syntax">vwn</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">last_PM_ExtVersionMalformed_at</span><span class="plain-syntax"> = </span><span class="identifier-syntax">vwn</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">"Offending word number %d <%N>\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">vwn</span><span class="plain-syntax">, </span><span class="identifier-syntax">vwn</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">copy_error</span><span class="plain-syntax"> *</span><span class="identifier-syntax">CE</span><span class="plain-syntax"> = </span><a href="2-ce.html#SP2" class="function-link"><span class="function-syntax">CopyErrors::new</span></a><span class="plain-syntax">(</span><span class="constant-syntax">SYNTAX_CE</span><span class="plain-syntax">, </span><span class="constant-syntax">ExtVersionMalformed_SYNERROR</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-ce.html#SP3" class="function-link"><span class="function-syntax">CopyErrors::supply_node</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">CE</span><span class="plain-syntax">, </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-cps.html#SP5" class="function-link"><span class="function-syntax">Copies::attach_error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inclusions_errors_to</span><span class="plain-syntax">, </span><span class="identifier-syntax">CE</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="6-inc.html#SP6">§6</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>§7. Checking the begins here and ends here sentences. </b>When a newly loaded extension is being sentence-broken, problem messages
|
|
will be turned up unless it contains the matching pair of "begins here"
|
|
and "ends here" sentences. Assuming it does, the sentence breaker has no
|
|
objection, but it also calls the two routines below to verify that these
|
|
sentences have the correct format. (The point of this is to catch a malformed
|
|
extension at the earliest possible moment after loading it: it's easy to
|
|
mis-install extensions, especially if doing so by hand, and the resulting
|
|
problem messages could be quite inscrutable if one extension was wrongly
|
|
identified as another.)
|
|
</p>
|
|
|
|
<p class="commentary">First, we check the "begins here" sentence. We also identify where the
|
|
version number is given (if it is), and check that we are not trying to
|
|
use an extension which is marked as not working on the current VM.
|
|
</p>
|
|
|
|
<p class="commentary firstcommentary"><a id="SP8" class="paragraph-anchor"></a><b>§8. </b>This parses the subject noun-phrase in the sentence
|
|
</p>
|
|
|
|
<blockquote>
|
|
<p>Version 3 of Pantomime Sausages by Mr Punch begins here.</p>
|
|
</blockquote>
|
|
|
|
<pre class="Preform-displayed-code all-displayed-code code-font">
|
|
<span class="Preform-function-syntax"><begins-here-sentence-subject></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"><extension-title-and-version></span><span class="Preform-plain-syntax"> </span><span class="Preform-constant-syntax">by</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>
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<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="6-inc.html#SP8_1" class="named-paragraph-link"><span class="named-paragraph">Issue problem</span><span class="named-paragraph-number">8.1</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="SP8_1" class="paragraph-anchor"></a><b>§8.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Issue problem</span><span class="named-paragraph-number">8.1</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="reserved-syntax">copy_error</span><span class="plain-syntax"> *</span><span class="identifier-syntax">CE</span><span class="plain-syntax"> = </span><a href="2-ce.html#SP2" class="function-link"><span class="function-syntax">CopyErrors::new</span></a><span class="plain-syntax">(</span><span class="constant-syntax">SYNTAX_CE</span><span class="plain-syntax">, </span><span class="identifier-syntax">ExtNoBeginsHere_SYNERROR</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-ce.html#SP3" class="function-link"><span class="function-syntax">CopyErrors::supply_node</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">CE</span><span class="plain-syntax">, </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-cps.html#SP5" class="function-link"><span class="function-syntax">Copies::attach_error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">inclusions_errors_to</span><span class="plain-syntax">, </span><span class="identifier-syntax">CE</span><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="6-inc.html#SP8">§8</a>.</li></ul>
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<p class="commentary firstcommentary"><a id="SP9" class="paragraph-anchor"></a><b>§9. </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">Inclusions::check_begins_here</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">Inclusions::check_begins_here</span></span>:<br/>Source Text - <a href="6-st.html#SP13">§13</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">PN</span><span class="plain-syntax">, </span><span class="reserved-syntax">inform_extension</span><span class="plain-syntax"> *</span><span class="identifier-syntax">E</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">inbuild_copy</span><span class="plain-syntax"> *</span><span class="identifier-syntax">S</span><span class="plain-syntax"> = </span><span class="identifier-syntax">inclusions_errors_to</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">inclusions_errors_to</span><span class="plain-syntax"> = </span><span class="identifier-syntax">E</span><span class="plain-syntax">-></span><span class="element-syntax">as_copy</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="function-syntax"><begins-here-sentence-subject></span><span class="plain-syntax">(</span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">PN</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">inclusions_errors_to</span><span class="plain-syntax"> = </span><span class="identifier-syntax">S</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="SP10" class="paragraph-anchor"></a><b>§10. </b>Similarly, we check the "ends here" sentence. Here there are no
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side-effects: we merely verify that the name matches the one quoted in
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the "begins here".
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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"><the-prefix-for-extensions></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">the</span><span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">...</span>
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<span class="Preform-reserved-syntax">void</span><span class="Preform-plain-syntax"> </span><span class="Preform-function-syntax">Inclusions::check_ends_here</span><button class="popup" onclick="togglePopup('usagePopup7')"><span class="Preform-comment-syntax">?</span><span class="popuptext" id="usagePopup7">Usage of <span class="code-font"><span class="Preform-function-syntax">Inclusions::check_ends_here</span></span>:<br/>Source Text - <a href="6-st.html#SP13">§13</a></span></button><span class="Preform-plain-syntax">(</span><span class="Preform-identifier-syntax">parse_node</span><span class="Preform-plain-syntax"> *</span><span class="Preform-identifier-syntax">PN</span><span class="Preform-plain-syntax">, </span><span class="Preform-reserved-syntax">inform_extension</span><span class="Preform-plain-syntax"> *</span><span class="Preform-identifier-syntax">E</span><span class="Preform-plain-syntax">) {</span>
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<span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">inbuild_copy</span><span class="Preform-plain-syntax"> *</span><span class="Preform-identifier-syntax">S</span><span class="Preform-plain-syntax"> = </span><span class="Preform-identifier-syntax">inclusions_errors_to</span><span class="Preform-plain-syntax">;</span>
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<span class="Preform-plain-syntax"> </span><span class="Preform-identifier-syntax">inclusions_errors_to</span><span class="Preform-plain-syntax"> = </span><span class="Preform-identifier-syntax">E</span><span class="Preform-plain-syntax">-></span><span class="Preform-element-syntax">as_copy</span><span class="Preform-plain-syntax">;</span>
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<span class="Preform-plain-syntax"> </span><span class="Preform-identifier-syntax">wording</span><span class="Preform-plain-syntax"> </span><span class="Preform-identifier-syntax">W</span><span class="Preform-plain-syntax"> = </span><span class="Preform-identifier-syntax">Node::get_text</span><span class="Preform-plain-syntax">(</span><span class="Preform-identifier-syntax">PN</span><span class="Preform-plain-syntax">);</span>
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<span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">if</span><span class="Preform-plain-syntax"> (</span><span class="Preform-function-syntax"><the-prefix-for-extensions></span><span class="Preform-plain-syntax">(</span><span class="Preform-identifier-syntax">W</span><span class="Preform-plain-syntax">)) </span><span class="Preform-identifier-syntax">W</span><span class="Preform-plain-syntax"> = </span><span class="Preform-identifier-syntax">GET_RW</span><span class="Preform-plain-syntax">(</span><span class="Preform-function-syntax"><the-prefix-for-extensions></span><span class="Preform-plain-syntax">, </span><span class="Preform-constant-syntax">1</span><span class="Preform-plain-syntax">);</span>
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<span class="Preform-plain-syntax"> </span><span class="Preform-identifier-syntax">wording</span><span class="Preform-plain-syntax"> </span><span class="Preform-identifier-syntax">T</span><span class="Preform-plain-syntax"> = </span><span class="Preform-identifier-syntax">Feeds::feed_text</span><span class="Preform-plain-syntax">(</span><span class="Preform-identifier-syntax">E</span><span class="Preform-plain-syntax">-></span><span class="Preform-element-syntax">as_copy</span><span class="Preform-plain-syntax">-></span><span class="Preform-element-syntax">edition</span><span class="Preform-plain-syntax">-></span><span class="Preform-element-syntax">work</span><span class="Preform-plain-syntax">-></span><span class="Preform-element-syntax">title</span><span class="Preform-plain-syntax">);</span>
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<span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">if</span><span class="Preform-plain-syntax"> (</span><span class="Preform-identifier-syntax">Wordings::match</span><span class="Preform-plain-syntax">(</span><span class="Preform-identifier-syntax">T</span><span class="Preform-plain-syntax">, </span><span class="Preform-identifier-syntax">W</span><span class="Preform-plain-syntax">) == </span><span class="Preform-identifier-syntax">FALSE</span><span class="Preform-plain-syntax">) {</span>
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<span class="Preform-plain-syntax"> </span><span class="Preform-reserved-syntax">copy_error</span><span class="Preform-plain-syntax"> *</span><span class="Preform-identifier-syntax">CE</span><span class="Preform-plain-syntax"> = </span><a href="2-ce.html#SP2" class="function-link"><span class="Preform-function-syntax">CopyErrors::new</span></a><span class="Preform-plain-syntax">(</span><span class="Preform-constant-syntax">SYNTAX_CE</span><span class="Preform-plain-syntax">, </span><span class="Preform-constant-syntax">ExtMisidentifiedEnds_SYNERROR</span><span class="Preform-plain-syntax">);</span>
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<span class="Preform-plain-syntax"> </span><a href="2-ce.html#SP3" class="function-link"><span class="Preform-function-syntax">CopyErrors::supply_node</span></a><span class="Preform-plain-syntax">(</span><span class="Preform-identifier-syntax">CE</span><span class="Preform-plain-syntax">, </span><span class="Preform-identifier-syntax">PN</span><span class="Preform-plain-syntax">);</span>
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<span class="Preform-plain-syntax"> </span><a href="2-ce.html#SP3" class="function-link"><span class="Preform-function-syntax">CopyErrors::supply_wording</span></a><span class="Preform-plain-syntax">(</span><span class="Preform-identifier-syntax">CE</span><span class="Preform-plain-syntax">, </span><span class="Preform-identifier-syntax">Node::get_text</span><span class="Preform-plain-syntax">(</span><span class="Preform-identifier-syntax">PN</span><span class="Preform-plain-syntax">));</span>
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<span class="Preform-plain-syntax"> </span><a href="2-cps.html#SP5" class="function-link"><span class="Preform-function-syntax">Copies::attach_error</span></a><span class="Preform-plain-syntax">(</span><span class="Preform-identifier-syntax">inclusions_errors_to</span><span class="Preform-plain-syntax">, </span><span class="Preform-identifier-syntax">CE</span><span class="Preform-plain-syntax">);</span>
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<span class="Preform-plain-syntax"> }</span>
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<span class="Preform-plain-syntax"> </span><span class="Preform-identifier-syntax">inclusions_errors_to</span><span class="Preform-plain-syntax"> = </span><span class="Preform-identifier-syntax">S</span><span class="Preform-plain-syntax">;</span>
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<span class="Preform-plain-syntax">}</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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