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<!--Weave of 'Requirements' 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#2">Chapter 2: Conceptual Framework</a></li><li><b>Requirements</b></li></ul></div>
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<p class="purpose">A requirement is a way to specify some subset of works: for example, those with a given title, and/or version number.</p>
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<ul class="toc"><li><a href="2-rqr.html#SP1">§1. Creation</a></li><li><a href="2-rqr.html#SP6">§6. Writing</a></li><li><a href="2-rqr.html#SP7">§7. Meeting requirements</a></li></ul><hr class="tocbar">
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. Creation. </b>A requirement is, in effect, the criteria for performing a search. We can
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specify the title, and/or the author name, and/or the genre — all given
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in the <span class="extract"><span class="extract-syntax">work</span></span> field below, with those unspecified left blank — and/or
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we can give a semantic version number range:
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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">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inbuild_requirement</span><span class="plain-syntax"> {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inbuild_work</span><span class="plain-syntax"> *</span><span class="identifier-syntax">work</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">semver_range</span><span class="plain-syntax"> *</span><span class="identifier-syntax">version_range</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">CLASS_DEFINITION</span>
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<span class="plain-syntax">} </span><span class="reserved-syntax">inbuild_requirement</span><span class="plain-syntax">;</span>
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</pre>
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<ul class="endnotetexts"><li>The structure inbuild_requirement is accessed in 2/edt, 2/cps, 2/ce, 2/jm, 3/bg, 3/is, 3/is2, 4/em, 4/ebm, 4/km, 4/lm, 4/pm, 4/pbm, 4/pfm, 4/tm, 5/es, 5/ks, 5/ls, 5/ps2, 6/st, 6/hdn, 6/inc, 7/tm, 7/dct, 7/cns, 7/ip, 7/ip2, 7/tr and here.</li></ul>
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<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. </b>Here are some creators:
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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_requirement</span><span class="plain-syntax"> *</span><span class="function-syntax">Requirements::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">Requirements::new</span></span>:<br/>Extension Services - <a href="5-es.html#SP2_4_3_1_1">§2.4.3.1.1</a>, <a href="5-es.html#SP2_4_3_2_1">§2.4.3.2.1</a><br/>Kit Services - <a href="5-ks.html#SP5_3_1_1">§5.3.1.1</a><br/>Project Services - <a href="5-ps2.html#SP22_1">§22.1</a><br/>Inclusions - <a href="6-inc.html#SP5_1">§5.1</a></span></button><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><span class="identifier-syntax">semver_range</span><span class="plain-syntax"> *</span><span class="identifier-syntax">R</span><span class="plain-syntax">) {</span>
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<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="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">inbuild_requirement</span><span class="plain-syntax">);</span>
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<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="identifier-syntax">work</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">req</span><span class="plain-syntax">-></span><span class="element-syntax">version_range</span><span class="plain-syntax"> = </span><span class="identifier-syntax">R</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">req</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">inbuild_requirement</span><span class="plain-syntax"> *</span><span class="function-syntax">Requirements::any_version_of</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">Requirements::any_version_of</span></span>:<br/>Inter Skill - <a href="3-is.html#SP3">§3</a>, <a href="3-is.html#SP4">§4</a><br/>Extension Services - <a href="5-es.html#SP2_4_3_1_2">§2.4.3.1.2</a>, <a href="5-es.html#SP2_4_3_2_2">§2.4.3.2.2</a><br/>Kit Services - <a href="5-ks.html#SP5_3_1_2">§5.3.1.2</a>, <a href="5-ks.html#SP8">§8</a><br/>Language Services - <a href="5-ls.html#SP7">§7</a>, <a href="5-ls.html#SP10">§10</a><br/>Project Services - <a href="5-ps2.html#SP17">§17</a>, <a href="5-ps2.html#SP20">§20</a>, <a href="5-ps2.html#SP22_1">§22.1</a><br/>Inclusions - <a href="6-inc.html#SP6_1_2">§6.1.2</a><br/>Dictionary - <a href="7-dct.html#SP9">§9</a></span></button><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>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</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">VersionNumberRanges::any_range</span><span class="plain-syntax">());</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">inbuild_requirement</span><span class="plain-syntax"> *</span><span class="function-syntax">Requirements::anything_of_genre</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">Requirements::anything_of_genre</span></span>:<br/>Language Services - <a href="5-ls.html#SP11">§11</a><br/>Census - <a href="7-cns.html#SP6">§6</a><br/>Index Pages - <a href="7-ip.html#SP1_1">§1.1</a><br/>The Report - <a href="7-tr.html#SP2_4_4">§2.4.4</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inbuild_genre</span><span class="plain-syntax"> *</span><span class="identifier-syntax">G</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><a href="2-rqr.html#SP2" class="function-link"><span class="function-syntax">Requirements::any_version_of</span></a><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">G</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">""</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">""</span><span class="plain-syntax">));</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">inbuild_requirement</span><span class="plain-syntax"> *</span><span class="function-syntax">Requirements::anything</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">Requirements::anything</span></span>:<br/><a href="2-rqr.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-rqr.html#SP2" class="function-link"><span class="function-syntax">Requirements::anything_of_genre</span></a><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="SP3" class="paragraph-anchor"></a><b>§3. </b>The most involved of the creators parses text. An involved example might be:
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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"> genre=extension,author=Emily Short,title=Locksmith,min=6.1-alpha.2,max=17.2</span>
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</pre>
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<p class="commentary">We should return a requirement if this is valid, and write an error message if
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it is not. (If the text has multiple things wrong with it, we write only the
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first error message arising.)
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</p>
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<p class="commentary">At the top level, we have a comma-separated list of clauses. Note that the
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empty text is legal here, and produces an unlimited requirement.
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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_requirement</span><span class="plain-syntax"> *</span><span class="function-syntax">Requirements::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</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">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">errors</span><span class="plain-syntax">) {</span>
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<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::anything</span></a><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">from</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">for</span><span class="plain-syntax"> (</span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">at</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">; </span><span class="identifier-syntax">at</span><span class="plain-syntax"> < </span><span class="identifier-syntax">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">); </span><span class="identifier-syntax">at</span><span class="plain-syntax">++) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">wchar_t</span><span class="plain-syntax"> </span><span class="identifier-syntax">c</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::get_at</span><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><span class="identifier-syntax">at</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">c</span><span class="plain-syntax"> == </span><span class="character-syntax">','</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">initial</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Str::substr</span><span class="plain-syntax">(</span><span class="identifier-syntax">initial</span><span class="plain-syntax">, </span><span class="identifier-syntax">Str::at</span><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><span class="identifier-syntax">from</span><span class="plain-syntax">), </span><span class="identifier-syntax">Str::at</span><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><span class="identifier-syntax">at</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> </span><a href="2-rqr.html#SP4" class="function-link"><span class="function-syntax">Requirements::impose_clause</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">req</span><span class="plain-syntax">, </span><span class="identifier-syntax">initial</span><span class="plain-syntax">, </span><span class="identifier-syntax">errors</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">initial</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">from</span><span class="plain-syntax"> = </span><span class="identifier-syntax">at</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>
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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">from</span><span class="plain-syntax"> < </span><span class="identifier-syntax">Str::len</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">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">final</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Str::substr</span><span class="plain-syntax">(</span><span class="identifier-syntax">final</span><span class="plain-syntax">, </span><span class="identifier-syntax">Str::at</span><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><span class="identifier-syntax">from</span><span class="plain-syntax">), </span><span class="identifier-syntax">Str::end</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><a href="2-rqr.html#SP4" class="function-link"><span class="function-syntax">Requirements::impose_clause</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">req</span><span class="plain-syntax">, </span><span class="identifier-syntax">final</span><span class="plain-syntax">, </span><span class="identifier-syntax">errors</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">final</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">req</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>Each clause must either be <span class="extract"><span class="extract-syntax">all</span></span> or take the form <span class="extract"><span class="extract-syntax">term=value</span></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="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Requirements::impose_clause</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">Requirements::impose_clause</span></span>:<br/><a href="2-rqr.html#SP3">§3</a></span></button><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="identifier-syntax">text_stream</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">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">errors</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Str::trim_white_space</span><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::eq</span><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"all"</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">term</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">value</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="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">at</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">; </span><span class="identifier-syntax">at</span><span class="plain-syntax"> < </span><span class="identifier-syntax">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">); </span><span class="identifier-syntax">at</span><span class="plain-syntax">++) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">wchar_t</span><span class="plain-syntax"> </span><span class="identifier-syntax">c</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::get_at</span><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><span class="identifier-syntax">at</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">c</span><span class="plain-syntax"> == </span><span class="character-syntax">'='</span><span class="plain-syntax">) {</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::substr</span><span class="plain-syntax">(</span><span class="identifier-syntax">term</span><span class="plain-syntax">, </span><span class="identifier-syntax">Str::start</span><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">), </span><span class="identifier-syntax">Str::at</span><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><span class="identifier-syntax">at</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::substr</span><span class="plain-syntax">(</span><span class="identifier-syntax">value</span><span class="plain-syntax">, </span><span class="identifier-syntax">Str::at</span><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><span class="identifier-syntax">at</span><span class="plain-syntax">+1), </span><span class="identifier-syntax">Str::end</span><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">));</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::trim_white_space</span><span class="plain-syntax">(</span><span class="identifier-syntax">term</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::trim_white_space</span><span class="plain-syntax">(</span><span class="identifier-syntax">value</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">term</span><span class="plain-syntax">) > </span><span class="constant-syntax">0</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">value</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="named-paragraph-container code-font"><a href="2-rqr.html#SP4_1" class="named-paragraph-link"><span class="named-paragraph">Deal with a term-value pair</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">else</span><span class="plain-syntax"> {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">errors</span><span class="plain-syntax">) == </span><span class="constant-syntax">0</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">errors</span><span class="plain-syntax">, </span><span class="string-syntax">"clause not in the form 'term=value': '%S'"</span><span class="plain-syntax">, </span><span class="identifier-syntax">T</span><span class="plain-syntax">);</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">term</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">value</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><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Deal with a term-value pair</span><span class="named-paragraph-number">4.1</span></span><span class="comment-syntax"> =</span>
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</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">Str::eq</span><span class="plain-syntax">(</span><span class="identifier-syntax">term</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"genre"</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inbuild_genre</span><span class="plain-syntax"> *</span><span class="identifier-syntax">G</span><span class="plain-syntax"> = </span><a href="2-gnr.html#SP3" class="function-link"><span class="function-syntax">Genres::by_name</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">value</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">G</span><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="element-syntax">genre</span><span class="plain-syntax"> = </span><span class="identifier-syntax">G</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><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">errors</span><span class="plain-syntax">) == </span><span class="constant-syntax">0</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">errors</span><span class="plain-syntax">, </span><span class="string-syntax">"not a valid genre: '%S'"</span><span class="plain-syntax">, </span><span class="identifier-syntax">value</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::eq</span><span class="plain-syntax">(</span><span class="identifier-syntax">term</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"title"</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::copy</span><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="element-syntax">title</span><span class="plain-syntax">, </span><span class="identifier-syntax">value</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::eq</span><span class="plain-syntax">(</span><span class="identifier-syntax">term</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"author"</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::copy</span><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="element-syntax">author_name</span><span class="plain-syntax">, </span><span class="identifier-syntax">value</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::eq</span><span class="plain-syntax">(</span><span class="identifier-syntax">term</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"version"</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><a href="2-rqr.html#SP5" class="function-link"><span class="function-syntax">Requirements::semver</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">value</span><span class="plain-syntax">, </span><span class="identifier-syntax">errors</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">req</span><span class="plain-syntax">-></span><span class="element-syntax">version_range</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">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::eq</span><span class="plain-syntax">(</span><span class="identifier-syntax">term</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"min"</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><a href="2-rqr.html#SP5" class="function-link"><span class="function-syntax">Requirements::semver</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">value</span><span class="plain-syntax">, </span><span class="identifier-syntax">errors</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">req</span><span class="plain-syntax">-></span><span class="element-syntax">version_range</span><span class="plain-syntax"> = </span><span class="identifier-syntax">VersionNumberRanges::at_least_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">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::eq</span><span class="plain-syntax">(</span><span class="identifier-syntax">term</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"max"</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><a href="2-rqr.html#SP5" class="function-link"><span class="function-syntax">Requirements::semver</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">value</span><span class="plain-syntax">, </span><span class="identifier-syntax">errors</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">req</span><span class="plain-syntax">-></span><span class="element-syntax">version_range</span><span class="plain-syntax"> = </span><span class="identifier-syntax">VersionNumberRanges::at_most_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">else</span><span class="plain-syntax"> {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">errors</span><span class="plain-syntax">) == </span><span class="constant-syntax">0</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">errors</span><span class="plain-syntax">, </span><span class="string-syntax">"no such term as '%S'"</span><span class="plain-syntax">, </span><span class="identifier-syntax">term</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-rqr.html#SP4">§4</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>§5. </b></p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">semantic_version_number</span><span class="plain-syntax"> </span><span class="function-syntax">Requirements::semver</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">Requirements::semver</span></span>:<br/><a href="2-rqr.html#SP4_1">§4.1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">value</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">errors</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::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">value</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="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">errors</span><span class="plain-syntax">) == </span><span class="constant-syntax">0</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">errors</span><span class="plain-syntax">, </span><span class="string-syntax">"not a valid version number: '%S'"</span><span class="plain-syntax">, </span><span class="identifier-syntax">value</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" class="paragraph-anchor"></a><b>§6. Writing. </b>This is the inverse of the above function, and uses the same notation.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Requirements::write</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">Requirements::write</span></span>:<br/>Nests - <a href="2-nst.html#SP9">§9</a><br/>Build Graphs - <a href="3-bg.html#SP6">§6</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">OUTPUT_STREAM</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="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">req</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) { </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"<none>"</span><span class="plain-syntax">); </span><span class="reserved-syntax">return</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">claused</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">req</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="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">claused</span><span class="plain-syntax">) </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">","</span><span class="plain-syntax">); </span><span class="identifier-syntax">claused</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">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"genre=%S"</span><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="element-syntax">genre</span><span class="plain-syntax">-></span><span class="element-syntax">genre_name</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::len</span><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="element-syntax">title</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">claused</span><span class="plain-syntax">) </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">","</span><span class="plain-syntax">); </span><span class="identifier-syntax">claused</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">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"work=%S"</span><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="element-syntax">title</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::len</span><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="element-syntax">author_name</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">claused</span><span class="plain-syntax">) </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">","</span><span class="plain-syntax">); </span><span class="identifier-syntax">claused</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">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"author=%S"</span><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="element-syntax">author_name</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">VersionNumberRanges::is_any_range</span><span class="plain-syntax">(</span><span class="identifier-syntax">req</span><span class="plain-syntax">-></span><span class="element-syntax">version_range</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">claused</span><span class="plain-syntax">) </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">","</span><span class="plain-syntax">); </span><span class="identifier-syntax">claused</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">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"range="</span><span class="plain-syntax">); </span><span class="identifier-syntax">VersionNumberRanges::write_range</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">req</span><span class="plain-syntax">-></span><span class="element-syntax">version_range</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">claused</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"all"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>§7. Meeting requirements. </b>Finally, we actually use these intricacies for something. Given an edition,
|
|
we return <span class="extract"><span class="extract-syntax">TRUE</span></span> if it meets the requirements and <span class="extract"><span class="extract-syntax">FALSE</span></span> if it does not.
|
|
</p>
|
|
|
|
<p class="commentary">Note that requirements are based on the edition, not on the copy. If one
|
|
copy on file of Version 3.2 of Monkey Puzzle Trees by Capability Brown meets
|
|
a requirement, then so will all other copies of it.
|
|
</p>
|
|
|
|
<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">Requirements::meets</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">Requirements::meets</span></span>:<br/>Extension Manager - <a href="4-em.html#SP6">§6</a><br/>Extension Bundle Manager - <a href="4-ebm.html#SP6">§6</a><br/>Kit Manager - <a href="4-km.html#SP7">§7</a><br/>Language Manager - <a href="4-lm.html#SP5">§5</a><br/>Pipeline Manager - <a href="4-pm.html#SP5">§5</a><br/>Template Manager - <a href="4-tm.html#SP5">§5</a><br/>Extension Services - <a href="5-es.html#SP20">§20</a><br/>Kit Services - <a href="5-ks.html#SP15">§15</a><br/>Inclusions - <a href="6-inc.html#SP6">§6</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inbuild_edition</span><span class="plain-syntax"> *</span><span class="identifier-syntax">edition</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>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">req</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">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">req</span><span class="plain-syntax">-></span><span class="element-syntax">work</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">req</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>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-gnr.html#SP4" class="function-link"><span class="function-syntax">Genres::equivalent</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="element-syntax">genre</span><span class="plain-syntax">, </span><span class="identifier-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">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">Str::len</span><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="element-syntax">title</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">Str::ne_insensitive</span><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="element-syntax">title</span><span class="plain-syntax">, </span><span class="identifier-syntax">edition</span><span class="plain-syntax">-></span><span class="element-syntax">work</span><span class="plain-syntax">-></span><span class="element-syntax">title</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">Str::len</span><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="element-syntax">author_name</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">Str::ne_insensitive</span><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="element-syntax">author_name</span><span class="plain-syntax">, </span><span class="identifier-syntax">edition</span><span class="plain-syntax">-></span><span class="element-syntax">work</span><span class="plain-syntax">-></span><span class="element-syntax">author_name</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>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumberRanges::in_range</span><span class="plain-syntax">(</span><span class="identifier-syntax">edition</span><span class="plain-syntax">-></span><span class="element-syntax">version</span><span class="plain-syntax">, </span><span class="identifier-syntax">req</span><span class="plain-syntax">-></span><span class="element-syntax">version_range</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="SP8" class="paragraph-anchor"></a><b>§8. </b>This is a very weak form of testing that requirement <span class="extract"><span class="extract-syntax">A</span></span> is stronger than
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requirement <span class="extract"><span class="extract-syntax">B</span></span> concerning the same work; it only catches the case where <span class="extract"><span class="extract-syntax">B</span></span>
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imposes no version constraints.
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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">Requirements::trumps</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">Requirements::trumps</span></span>:<br/>Kit Services - <a href="5-ks.html#SP15">§15</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inbuild_requirement</span><span class="plain-syntax"> *</span><span class="identifier-syntax">A</span><span class="plain-syntax">, </span><span class="reserved-syntax">inbuild_requirement</span><span class="plain-syntax"> *</span><span class="identifier-syntax">B</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">B</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">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">A</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">B</span><span class="plain-syntax">-></span><span class="identifier-syntax">work</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">B</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>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">B</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">A</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>
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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">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">B</span><span class="plain-syntax">-></span><span class="element-syntax">work</span><span class="plain-syntax">-></span><span class="element-syntax">title</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">Str::ne_insensitive</span><span class="plain-syntax">(</span><span class="identifier-syntax">B</span><span class="plain-syntax">-></span><span class="element-syntax">work</span><span class="plain-syntax">-></span><span class="element-syntax">title</span><span class="plain-syntax">, </span><span class="identifier-syntax">A</span><span class="plain-syntax">-></span><span class="element-syntax">work</span><span class="plain-syntax">-></span><span class="element-syntax">title</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>
|
|
<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">B</span><span class="plain-syntax">-></span><span class="element-syntax">work</span><span class="plain-syntax">-></span><span class="element-syntax">author_name</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">Str::ne_insensitive</span><span class="plain-syntax">(</span><span class="identifier-syntax">B</span><span class="plain-syntax">-></span><span class="element-syntax">work</span><span class="plain-syntax">-></span><span class="element-syntax">author_name</span><span class="plain-syntax">, </span><span class="identifier-syntax">A</span><span class="plain-syntax">-></span><span class="element-syntax">work</span><span class="plain-syntax">-></span><span class="element-syntax">author_name</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>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">VersionNumberRanges::is_any_range</span><span class="plain-syntax">(</span><span class="identifier-syntax">B</span><span class="plain-syntax">-></span><span class="element-syntax">version_range</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">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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