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<head>
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<title>JSON Metadata</title>
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<link href="../docs-assets/Breadcrumbs.css" rel="stylesheet" rev="stylesheet" type="text/css">
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<meta name="viewport" content="width=device-width initial-scale=1">
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}
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<h1><a href="../index.html">
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<img src="../docs-assets/Inform.png" height=72">
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</a></h1>
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<ul><li><a href="../index.html">home</a></li>
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</ul><h2>Compiler</h2><ul>
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<li><a href="../structure.html">structure</a></li>
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<li><a href="../inbuildn.html">inbuild</a></li>
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<li><a href="../inform7n.html">inform7</a></li>
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<li><a href="../services.html">services</a></li>
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<li><a href="../secrets.html">secrets</a></li>
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<li><a href="../inblorbn.html">inblorb</a></li>
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<li><a href="../inform6.html">inform6</a></li>
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<li><a href="../inpolicyn.html">inpolicy</a></li>
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</ul><h2>Resources</h2><ul>
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</ul><h2>Repository</h2><ul>
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<li><a href="https://github.com/ganelson/inform"><img src="../docs-assets/github.png" height=18> github</a></li>
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</ul><h2>Related Projects</h2><ul>
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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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</ul>
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</nav>
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<main role="main">
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<!--Weave of 'JSON Metadata' 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>JSON Metadata</b></li></ul></div>
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<p class="purpose">Managing JSON-encoded metadata files for resources such as kits.</p>
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. </b>Every <a href="2-cps.html#SP1" class="internal">inbuild_copy</a> can optionally contain a pointer to a JSON value called
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<span class="extract"><span class="extract-syntax">metadata_record</span></span>. The code in this section reads a file of JSON metadata into
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that record, validating it (a) as syntactically correct JSON, (b) as JSON which
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matches the Inbuild schema for what copy metadata should look like, and (c) as
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identifying the copy which it purports to identify.
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</p>
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<p class="commentary">In practice, (a) and (b) are delegated to the <a href="../../../inweb/foundation-module/4-jsn.html" class="internal">JSON (in foundation)</a> library.
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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">JSONMetadata::read_metadata_file</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">JSONMetadata::read_metadata_file</span></span>:<br/>Kit Services - <a href="5-ks.html#SP4">§4</a><br/>Language Services - <a href="5-ls.html#SP2">§2</a><br/>Project Services - <a href="5-ps2.html#SP2">§2</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">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_requirement</span><span class="plain-syntax"> *</span><span class="identifier-syntax">req</span><span class="plain-syntax"> = </span><a href="2-jm.html#SP2" class="function-link"><span class="function-syntax">JSONMetadata::requirements</span></a><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">contents</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">TextFiles::read</span><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">, </span><span class="string-syntax">"unable to read file of JSON metadata"</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><a href="2-jm.html#SP1" class="function-link"><span class="function-syntax">JSONMetadata::read_metadata_file_helper</span></a><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><span class="identifier-syntax">contents</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">text_file_position</span><span class="plain-syntax"> </span><span class="identifier-syntax">tfp</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TextFiles::at</span><span class="plain-syntax">(</span><span class="identifier-syntax">F</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">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">obj</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::decode</span><span class="plain-syntax">(</span><span class="identifier-syntax">contents</span><span class="plain-syntax">, &</span><span class="identifier-syntax">tfp</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">obj</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">obj</span><span class="plain-syntax">-></span><span class="identifier-syntax">JSON_type</span><span class="plain-syntax"> == </span><span class="identifier-syntax">ERROR_JSONTYPE</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-jm.html#SP1_1" class="named-paragraph-link"><span class="named-paragraph">Report a syntax error in JSON</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="reserved-syntax">return</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
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<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="2-jm.html#SP1_2" class="named-paragraph-link"><span class="named-paragraph">Validate the JSON read in</span><span class="named-paragraph-number">1.2</span></a></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">contents</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">C</span><span class="plain-syntax">-></span><span class="element-syntax">metadata_record</span><span class="plain-syntax"> = </span><span class="identifier-syntax">obj</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-jm.html#SP1_3" class="named-paragraph-link"><span class="named-paragraph">Examine the "is" member of the metadata object</span><span class="named-paragraph-number">1.3</span></a></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-jm.html#SP1_4" class="named-paragraph-link"><span class="named-paragraph">Police the "needs"</span><span class="named-paragraph-number">1.4</span></a></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">compatibility</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">obj</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"compatibility"</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">compatibility</span><span class="plain-syntax">) </span><span class="named-paragraph-container code-font"><a href="2-jm.html#SP1_6" class="named-paragraph-link"><span class="named-paragraph">Extract compatibility</span><span class="named-paragraph-number">1.6</span></a></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">JSONMetadata::read_metadata_file_helper</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">JSONMetadata::read_metadata_file_helper</span></span>:<br/>Registries - <a href="2-rgs.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">text</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_file_position</span><span class="plain-syntax"> *</span><span class="identifier-syntax">tfp</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">void</span><span class="plain-syntax"> *</span><span class="identifier-syntax">v_state</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">contents</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *) </span><span class="identifier-syntax">v_state</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">contents</span><span class="plain-syntax">, </span><span class="string-syntax">"%S\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">text</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="SP1_1" class="paragraph-anchor"></a><b>§1.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Report a syntax error in JSON</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="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">err</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">err</span><span class="plain-syntax">, </span><span class="string-syntax">"the metadata contains a syntax error: '%S'"</span><span class="plain-syntax">, </span><span class="identifier-syntax">obj</span><span class="plain-syntax">-></span><span class="identifier-syntax">if_error</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">C</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">METADATA_MALFORMED_CE</span><span class="plain-syntax">, -1, </span><span class="identifier-syntax">err</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">err</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="2-jm.html#SP1">§1</a>.</li></ul>
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<p class="commentary firstcommentary"><a id="SP1_2" class="paragraph-anchor"></a><b>§1.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Validate the JSON read in</span><span class="named-paragraph-number">1.2</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="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">validation_errors</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NEW_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</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">JSON::validate</span><span class="plain-syntax">(</span><span class="identifier-syntax">obj</span><span class="plain-syntax">, </span><span class="identifier-syntax">req</span><span class="plain-syntax">, </span><span class="identifier-syntax">validation_errors</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">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">err</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">err</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax">, </span><span class="identifier-syntax">validation_errors</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">msg</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">msg</span><span class="plain-syntax">, </span><span class="string-syntax">"the metadata did not validate: '%S'"</span><span class="plain-syntax">, </span><span class="identifier-syntax">err</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">C</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">METADATA_MALFORMED_CE</span><span class="plain-syntax">, -1, </span><span class="identifier-syntax">msg</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">msg</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>
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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="2-jm.html#SP1">§1</a>.</li></ul>
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<p class="commentary firstcommentary"><a id="SP1_3" class="paragraph-anchor"></a><b>§1.3. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Examine the "is" member of the metadata object</span><span class="named-paragraph-number">1.3</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="identifier-syntax">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">is</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">obj</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"is"</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">type</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">is</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"type"</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">type</span><span class="plain-syntax">) </span><span class="named-paragraph-container code-font"><a href="2-jm.html#SP1_3_1" class="named-paragraph-link"><span class="named-paragraph">Make sure the type is correct</span><span class="named-paragraph-number">1.3.1</span></a></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">title</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">is</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"title"</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">title</span><span class="plain-syntax">) </span><span class="named-paragraph-container code-font"><a href="2-jm.html#SP1_3_2" class="named-paragraph-link"><span class="named-paragraph">Make sure the title is correct</span><span class="named-paragraph-number">1.3.2</span></a></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">author</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">is</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"author"</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">author</span><span class="plain-syntax">) </span><span class="named-paragraph-container code-font"><a href="2-jm.html#SP1_3_3" class="named-paragraph-link"><span class="named-paragraph">Make sure the author is correct</span><span class="named-paragraph-number">1.3.3</span></a></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">version</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">is</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"version"</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">version</span><span class="plain-syntax">) </span><span class="named-paragraph-container code-font"><a href="2-jm.html#SP1_3_4" class="named-paragraph-link"><span class="named-paragraph">Read the version number and apply it</span><span class="named-paragraph-number">1.3.4</span></a></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">version_range</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">is</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"version-range"</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">version_range</span><span class="plain-syntax">) </span><span class="named-paragraph-container code-font"><a href="2-jm.html#SP1_3_5" class="named-paragraph-link"><span class="named-paragraph">Forbid the use of a version range</span><span class="named-paragraph-number">1.3.5</span></a></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="2-jm.html#SP1">§1</a>.</li></ul>
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<p class="commentary firstcommentary"><a id="SP1_3_1" class="paragraph-anchor"></a><b>§1.3.1. </b>So, for example, if this file is from what we think is a kit, then it needs
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to say that <span class="extract"><span class="extract-syntax">is.type</span></span> is <span class="extract"><span class="extract-syntax">"kit"</span></span>.
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</p>
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<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Make sure the type is correct</span><span class="named-paragraph-number">1.3.1</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="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">type_text</span><span class="plain-syntax"> = </span><span class="identifier-syntax">type</span><span class="plain-syntax">-></span><span class="identifier-syntax">if_string</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">required_text</span><span class="plain-syntax"> = </span><span class="identifier-syntax">I</span><span class="string-syntax">"<unknown"</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="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">kit_genre</span><span class="plain-syntax">) </span><span class="identifier-syntax">required_text</span><span class="plain-syntax"> = </span><span class="identifier-syntax">I</span><span class="string-syntax">"kit"</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="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">extension_genre</span><span class="plain-syntax">) </span><span class="identifier-syntax">required_text</span><span class="plain-syntax"> = </span><span class="identifier-syntax">I</span><span class="string-syntax">"extension"</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="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">language_genre</span><span class="plain-syntax">) </span><span class="identifier-syntax">required_text</span><span class="plain-syntax"> = </span><span class="identifier-syntax">I</span><span class="string-syntax">"language"</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="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">project_file_genre</span><span class="plain-syntax">) </span><span class="identifier-syntax">required_text</span><span class="plain-syntax"> = </span><span class="identifier-syntax">I</span><span class="string-syntax">"project"</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="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">project_bundle_genre</span><span class="plain-syntax">) </span><span class="identifier-syntax">required_text</span><span class="plain-syntax"> = </span><span class="identifier-syntax">I</span><span class="string-syntax">"project"</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</span><span class="plain-syntax">(</span><span class="identifier-syntax">type_text</span><span class="plain-syntax">, </span><span class="identifier-syntax">required_text</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">msg</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">msg</span><span class="plain-syntax">, </span><span class="string-syntax">"the metadata misidentifies the type as '%S', but it should be '%S'"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">type_text</span><span class="plain-syntax">, </span><span class="identifier-syntax">required_text</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">C</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">METADATA_MALFORMED_CE</span><span class="plain-syntax">, -1, </span><span class="identifier-syntax">msg</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">msg</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">kit_details</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">obj</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"kit-details"</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">kit_details</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">Str::ne</span><span class="plain-syntax">(</span><span class="identifier-syntax">type_text</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"kit"</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">err</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">err</span><span class="plain-syntax">, </span><span class="string-syntax">"the metadata contains kit-details but is not for a kit"</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">C</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">METADATA_MALFORMED_CE</span><span class="plain-syntax">, -1, </span><span class="identifier-syntax">err</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">err</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">extension_details</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">obj</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"extension-details"</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">extension_details</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">Str::ne</span><span class="plain-syntax">(</span><span class="identifier-syntax">type_text</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"extension"</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">err</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">err</span><span class="plain-syntax">, </span><span class="string-syntax">"the metadata contains extension-details but is not for an extension"</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">C</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">METADATA_MALFORMED_CE</span><span class="plain-syntax">, -1, </span><span class="identifier-syntax">err</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">err</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">language_details</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">obj</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"language-details"</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">language_details</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">Str::ne</span><span class="plain-syntax">(</span><span class="identifier-syntax">type_text</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"language"</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">err</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">err</span><span class="plain-syntax">, </span><span class="string-syntax">"the metadata contains language-details but is not for a language"</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">C</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">METADATA_MALFORMED_CE</span><span class="plain-syntax">, -1, </span><span class="identifier-syntax">err</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">err</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">project_details</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">obj</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"project-details"</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_details</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">Str::ne</span><span class="plain-syntax">(</span><span class="identifier-syntax">type_text</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"project"</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">err</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">err</span><span class="plain-syntax">, </span><span class="string-syntax">"the metadata contains project-details but is not for a project"</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">C</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">METADATA_MALFORMED_CE</span><span class="plain-syntax">, -1, </span><span class="identifier-syntax">err</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">err</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> }</span>
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|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-jm.html#SP1_3">§1.3</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP1_3_2" class="paragraph-anchor"></a><b>§1.3.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Make sure the title is correct</span><span class="named-paragraph-number">1.3.2</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::ne</span><span class="plain-syntax">(</span><span class="identifier-syntax">title</span><span class="plain-syntax">-></span><span class="identifier-syntax">if_string</span><span class="plain-syntax">, </span><span class="identifier-syntax">C</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">title</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">err</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">C</span><span class="plain-syntax">-></span><span class="element-syntax">edition</span><span class="plain-syntax">-></span><span class="identifier-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="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">err</span><span class="plain-syntax">, </span><span class="string-syntax">"the metadata says the title is '%S' when it should be '%S'"</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">if_string</span><span class="plain-syntax">, </span><span class="identifier-syntax">C</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">title</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">else</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">err</span><span class="plain-syntax">, </span><span class="string-syntax">"the metadata says the title is '%S' but it is untitled"</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">if_string</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">C</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">METADATA_MALFORMED_CE</span><span class="plain-syntax">, -1, </span><span class="identifier-syntax">err</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">err</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-jm.html#SP1_3">§1.3</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP1_3_3" class="paragraph-anchor"></a><b>§1.3.3. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Make sure the author is correct</span><span class="named-paragraph-number">1.3.3</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">Str::ne</span><span class="plain-syntax">(</span><span class="identifier-syntax">author</span><span class="plain-syntax">-></span><span class="identifier-syntax">if_string</span><span class="plain-syntax">, </span><span class="identifier-syntax">C</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">author_name</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">err</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">C</span><span class="plain-syntax">-></span><span class="element-syntax">edition</span><span class="plain-syntax">-></span><span class="identifier-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="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">err</span><span class="plain-syntax">, </span><span class="string-syntax">"the metadata says the author is '%S' when it should be '%S'"</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">author</span><span class="plain-syntax">-></span><span class="identifier-syntax">if_string</span><span class="plain-syntax">, </span><span class="identifier-syntax">C</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">author_name</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">err</span><span class="plain-syntax">, </span><span class="string-syntax">"the metadata says the author is '%S', but it has no author"</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">author</span><span class="plain-syntax">-></span><span class="identifier-syntax">if_string</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">C</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">METADATA_MALFORMED_CE</span><span class="plain-syntax">, -1, </span><span class="identifier-syntax">err</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">err</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-jm.html#SP1_3">§1.3</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP1_3_4" class="paragraph-anchor"></a><b>§1.3.4. </b>Unlike those tests, here we simply trust the metadata to be correctly supplying
|
|
a version number.
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Read the version number and apply it</span><span class="named-paragraph-number">1.3.4</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">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">version</span><span class="plain-syntax">-></span><span class="identifier-syntax">if_string</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">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="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">err</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">err</span><span class="plain-syntax">, </span><span class="string-syntax">"cannot read version number '%S'"</span><span class="plain-syntax">, </span><span class="identifier-syntax">version</span><span class="plain-syntax">-></span><span class="identifier-syntax">if_string</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">C</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">METADATA_MALFORMED_CE</span><span class="plain-syntax">, -1, </span><span class="identifier-syntax">err</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">err</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">C</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">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">version</span><span class="plain-syntax">-></span><span class="identifier-syntax">if_string</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-jm.html#SP1_3">§1.3</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP1_3_5" class="paragraph-anchor"></a><b>§1.3.5. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Forbid the use of a version range</span><span class="named-paragraph-number">1.3.5</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">err</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">err</span><span class="plain-syntax">, </span><span class="string-syntax">"the metadata should specify an exact version, not a range"</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">C</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">METADATA_MALFORMED_CE</span><span class="plain-syntax">, -1, </span><span class="identifier-syntax">err</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">err</span><span class="plain-syntax">)</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-jm.html#SP1_3">§1.3</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP1_4" class="paragraph-anchor"></a><b>§1.4. </b>It would have been possible to write the schema in a way which would exclude
|
|
the possibilities blocked here, but only by making it cumbersome. Besides,
|
|
checking here results in more explicit error messages.
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Police the "needs"</span><span class="named-paragraph-number">1.4</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">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">needs</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">obj</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"needs"</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">needs</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_value</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">LOOP_OVER_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">E</span><span class="plain-syntax">, </span><span class="identifier-syntax">JSON_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">needs</span><span class="plain-syntax">-></span><span class="identifier-syntax">if_list</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">if_clause</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">E</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"if"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">unless_clause</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">E</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"unless"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">needs_clause</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">E</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"needs"</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">if_clause</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">unless_clause</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">err</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">err</span><span class="plain-syntax">, </span><span class="string-syntax">"cannot give both 'if' and 'unless' in same requirement"</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">C</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">METADATA_MALFORMED_CE</span><span class="plain-syntax">, -1, </span><span class="identifier-syntax">err</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">err</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><a href="2-jm.html#SP1_5" class="function-link"><span class="function-syntax">JSONMetadata::not_both</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">, </span><span class="identifier-syntax">if_clause</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"'if' clause of a requirement"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-jm.html#SP1_5" class="function-link"><span class="function-syntax">JSONMetadata::not_both</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">, </span><span class="identifier-syntax">unless_clause</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"'unless' clause of a requirement"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-jm.html#SP1_5" class="function-link"><span class="function-syntax">JSONMetadata::not_both</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">, </span><span class="identifier-syntax">needs_clause</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"'needs' clause of a requirement"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-jm.html#SP1">§1</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP1_5" class="paragraph-anchor"></a><b>§1.5. </b>All very pedantic, but:
|
|
</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">JSONMetadata::not_both</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">JSONMetadata::not_both</span></span>:<br/><a href="2-jm.html#SP1_4">§1.4</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">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">clause</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">where</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">clause</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">version</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">clause</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">JSON_value</span><span class="plain-syntax"> *</span><span class="identifier-syntax">version_range</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::look_up_object</span><span class="plain-syntax">(</span><span class="identifier-syntax">clause</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"version-range"</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</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">version_range</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">err</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">err</span><span class="plain-syntax">, </span><span class="string-syntax">"%S specifies both a version and a version-range"</span><span class="plain-syntax">, </span><span class="identifier-syntax">where</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">C</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">METADATA_MALFORMED_CE</span><span class="plain-syntax">, -1, </span><span class="identifier-syntax">err</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">err</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">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><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">version</span><span class="plain-syntax">-></span><span class="identifier-syntax">if_string</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="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">err</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">err</span><span class="plain-syntax">, </span><span class="string-syntax">"cannot read version '%S' in %S"</span><span class="plain-syntax">, </span><span class="identifier-syntax">version</span><span class="plain-syntax">-></span><span class="identifier-syntax">if_string</span><span class="plain-syntax">, </span><span class="identifier-syntax">where</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">C</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">METADATA_MALFORMED_CE</span><span class="plain-syntax">, -1, </span><span class="identifier-syntax">err</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">err</span><span class="plain-syntax">)</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">version_range</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">err</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">err</span><span class="plain-syntax">, </span><span class="string-syntax">"'version-range' is not yet supported in %S"</span><span class="plain-syntax">, </span><span class="identifier-syntax">where</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">C</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">METADATA_MALFORMED_CE</span><span class="plain-syntax">, -1, </span><span class="identifier-syntax">err</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">err</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP1_6" class="paragraph-anchor"></a><b>§1.6. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Extract compatibility</span><span class="named-paragraph-number">1.6</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">compatibility_specification</span><span class="plain-syntax"> *</span><span class="identifier-syntax">CS</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Compatibility::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">compatibility</span><span class="plain-syntax">-></span><span class="identifier-syntax">if_string</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">CS</span><span class="plain-syntax">) </span><span class="identifier-syntax">C</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="identifier-syntax">CS</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">err</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">err</span><span class="plain-syntax">, </span><span class="string-syntax">"cannot read compatibility '%S'"</span><span class="plain-syntax">, </span><span class="identifier-syntax">compatibility</span><span class="plain-syntax">-></span><span class="identifier-syntax">if_string</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">C</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">METADATA_MALFORMED_CE</span><span class="plain-syntax">, -1, </span><span class="identifier-syntax">err</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">err</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-jm.html#SP1">§1</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. </b>The following returns the schema needed for (b); we will load it in from a file
|
|
in the Inform/Inbuild installation, but will then cache the result so that it
|
|
loads only once.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">dictionary</span><span class="plain-syntax"> *</span><span class="identifier-syntax">JSON_resource_metadata_requirements</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
|
|
<span class="identifier-syntax">JSON_requirement</span><span class="plain-syntax"> *</span><span class="function-syntax">JSONMetadata::requirements</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">JSONMetadata::requirements</span></span>:<br/><a href="2-jm.html#SP1">§1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</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">JSON_resource_metadata_requirements</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">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InstalledFiles::filename</span><span class="plain-syntax">(</span><span class="identifier-syntax">RESOURCE_JSON_REQS_IRES</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_resource_metadata_requirements</span><span class="plain-syntax"> = </span><span class="identifier-syntax">JSON::read_requirements_file</span><span class="plain-syntax">(</span><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><span class="identifier-syntax">F</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">JSON_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="identifier-syntax">JSON::look_up_requirements</span><span class="plain-syntax">(</span><span class="identifier-syntax">JSON_resource_metadata_requirements</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"resource-metadata"</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="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"JSON metadata file did not define <resource-metadata>"</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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</pre>
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