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<!--Weave of 'Target Virtual Machines' 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="../services.html">Services</a></li><li><a href="index.html">arch</a></li><li><a href="index.html#2">Chapter 2: Architectures and VMs</a></li><li><b>Target Virtual Machines</b></li></ul></div>
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<p class="purpose">To deal with multiple object code formats.</p>
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<ul class="toc"><li><a href="2-tvm.html#SP1">§1. Target VMs</a></li><li><a href="2-tvm.html#SP5">§5. To and from text</a></li><li><a href="2-tvm.html#SP9">§9. Architectural provisions</a></li><li><a href="2-tvm.html#SP10">§10. File extension provisions</a></li><li><a href="2-tvm.html#SP13">§13. Family compatibility</a></li><li><a href="2-tvm.html#SP14">§14. Options</a></li></ul><hr class="tocbar">
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. Target VMs. </b>For a fuller explanation of these, see <a href="P-wtmd.html" class="internal">What This Module Does</a>, but briefly:
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a <a href="2-tvm.html#SP2" class="internal">target_vm</a> object represents a choice of both Inter architecture and
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also a format for final code-generation from Inter. For example, it might
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represent "16-bit with debugging enabled to be generated to Inform 6 code",
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or, say, "32-bit to be generated to ANSI C code".
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</p>
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<p class="commentary">The basic set of possible target VMs is made when the <a href="index.html" class="internal">arch</a> module starts up:
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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">TargetVMs::create</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">TargetVMs::create</span></span>:<br/>Arch Module - <a href="1-am.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="comment-syntax"> hat tip: Joel Berez and Marc Blank, 1979, and later hands</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"16"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Inform6"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"5"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"i6"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"z5"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"zblorb"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Parchment"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"16d"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Inform6"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"5"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"i6"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"z5"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"zblorb"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Parchment"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"16"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Inform6"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"8"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"i6"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"z8"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"zblorb"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Parchment"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"16d"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Inform6"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"8"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"i6"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"z8"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"zblorb"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Parchment"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="comment-syntax"> hat tip: Andrew Plotkin, 2000</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"32"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Inform6"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"3.1.2"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"i6"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"ulx"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"gblorb"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Quixe"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"32d"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Inform6"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"3.1.2"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"i6"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"ulx"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"gblorb"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Quixe"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="comment-syntax"> hat tip: modesty forbids</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"16"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Binary"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"1"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"c"</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><span class="identifier-syntax">I</span><span class="string-syntax">""</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"16d"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Binary"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"1"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"c"</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><span class="identifier-syntax">I</span><span class="string-syntax">""</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"32"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Binary"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"1"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"c"</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><span class="identifier-syntax">I</span><span class="string-syntax">""</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"32d"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Binary"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"1"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"c"</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><span class="identifier-syntax">I</span><span class="string-syntax">""</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"16"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Text"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"1"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"c"</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><span class="identifier-syntax">I</span><span class="string-syntax">""</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"16d"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Text"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"1"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"c"</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><span class="identifier-syntax">I</span><span class="string-syntax">""</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"32"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Text"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"1"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"c"</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><span class="identifier-syntax">I</span><span class="string-syntax">""</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"32d"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Text"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"1"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"c"</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><span class="identifier-syntax">I</span><span class="string-syntax">""</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="comment-syntax"> C support added September 2021</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"32"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"C"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"1"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"c"</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><span class="identifier-syntax">I</span><span class="string-syntax">""</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"32d"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"C"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"1"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"c"</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><span class="identifier-syntax">I</span><span class="string-syntax">""</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="comment-syntax"> Inventory support added March 2022</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"16"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Inventory"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"1"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"c"</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><span class="identifier-syntax">I</span><span class="string-syntax">""</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"16d"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Inventory"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"1"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"c"</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><span class="identifier-syntax">I</span><span class="string-syntax">""</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"32"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Inventory"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"1"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"c"</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><span class="identifier-syntax">I</span><span class="string-syntax">""</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"32d"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"Inventory"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"1"</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="string-syntax">"c"</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><span class="identifier-syntax">I</span><span class="string-syntax">""</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. </b>The <a href="2-tvm.html#SP2" class="internal">target_vm</a> structure contains two arguably architectural doohickies:
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potential limits on the use of floating-point arithmetic or on local variables.
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These are indeed currently derived only from the choice of <span class="extract"><span class="extract-syntax">architecture</span></span>, but
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we're keeping them here in case there is some day a need for a 32-bit format
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with integer-only arithmetic, say.
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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">target_vm</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">inter_architecture</span><span class="plain-syntax"> *</span><span class="identifier-syntax">architecture</span><span class="plain-syntax">; </span><span class="comment-syntax"> such as 32d</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">semantic_version_number</span><span class="plain-syntax"> </span><span class="identifier-syntax">version</span><span class="plain-syntax">; </span><span class="comment-syntax"> such as 0.8.7</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">transpiled_extension</span><span class="plain-syntax">; </span><span class="comment-syntax"> such as </span><span class="extract"><span class="extract-syntax">i6</span></span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM_unblorbed_extension</span><span class="plain-syntax">; </span><span class="comment-syntax"> such as </span><span class="extract"><span class="extract-syntax">z8</span></span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM_blorbed_extension</span><span class="plain-syntax">; </span><span class="comment-syntax"> when blorbed up</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM_image</span><span class="plain-syntax">; </span><span class="comment-syntax"> filename of image for icon used in the index</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">default_browser_interpreter</span><span class="plain-syntax">; </span><span class="comment-syntax"> e.g., "Parchment"</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">iFiction_format_name</span><span class="plain-syntax">; </span><span class="comment-syntax"> e.g., "zcode": see the Treaty of Babel</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">transpiler_family</span><span class="plain-syntax">; </span><span class="comment-syntax"> transpiler format, e.g., "Inform6" or "C"</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">full_format</span><span class="plain-syntax">; </span><span class="comment-syntax"> e.g., "Inform6/32d/v3.1.2"</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">supports_floating_point</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">max_locals</span><span class="plain-syntax">; </span><span class="comment-syntax"> upper limit on local variables per stack frame</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">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">format_options</span><span class="plain-syntax">; </span><span class="comment-syntax"> of </span><span class="extract"><span class="extract-syntax">text_stream</span></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">target_vm</span><span class="plain-syntax">;</span>
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</pre>
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<ul class="endnotetexts"><li>The structure target_vm is accessed in 2/cmp and here.</li></ul>
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<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>§3. </b></p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="function-syntax">TargetVMs::new</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">TargetVMs::new</span></span>:<br/><a href="2-tvm.html#SP1">§1</a>, <a href="2-tvm.html#SP4">§4</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_architecture</span><span class="plain-syntax"> *</span><span class="identifier-syntax">arch</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">format</span><span class="plain-syntax">,</span>
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<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">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">trans</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">unblorbed</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">blorbed</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">interpreter</span><span class="plain-syntax">, </span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">opts</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">version</span><span class="plain-syntax"> = </span><span class="identifier-syntax">V</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">transpiled_extension</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::duplicate</span><span class="plain-syntax">(</span><span class="identifier-syntax">trans</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">VM_unblorbed_extension</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::duplicate</span><span class="plain-syntax">(</span><span class="identifier-syntax">unblorbed</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">VM_blorbed_extension</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::duplicate</span><span class="plain-syntax">(</span><span class="identifier-syntax">blorbed</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">default_browser_interpreter</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::duplicate</span><span class="plain-syntax">(</span><span class="identifier-syntax">interpreter</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">architecture</span><span class="plain-syntax"> = </span><span class="identifier-syntax">arch</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">architecture</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no such architecture"</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-arc.html#SP6" class="function-link"><span class="function-syntax">Architectures::is_16_bit</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">architecture</span><span class="plain-syntax">)) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">supports_floating_point</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">max_locals</span><span class="plain-syntax"> = </span><span class="constant-syntax">15</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">VM_image</span><span class="plain-syntax"> = </span><span class="identifier-syntax">I</span><span class="string-syntax">"vm_z8.png"</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">supports_floating_point</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="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">max_locals</span><span class="plain-syntax"> = </span><span class="constant-syntax">256</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">VM_image</span><span class="plain-syntax"> = </span><span class="identifier-syntax">I</span><span class="string-syntax">"vm_glulx.png"</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">iFiction_format_name</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::new</span><span class="plain-syntax">();</span>
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<span class="plain-syntax"> </span><span class="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">format</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Inform6"</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-arc.html#SP6" class="function-link"><span class="function-syntax">Architectures::is_16_bit</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">architecture</span><span class="plain-syntax">)) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">iFiction_format_name</span><span class="plain-syntax"> = </span><span class="identifier-syntax">I</span><span class="string-syntax">"zcode"</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">iFiction_format_name</span><span class="plain-syntax"> = </span><span class="identifier-syntax">I</span><span class="string-syntax">"glulx"</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">else</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">iFiction_format_name</span><span class="plain-syntax">, </span><span class="string-syntax">"Inform+%S"</span><span class="plain-syntax">, </span><span class="identifier-syntax">format</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">transpiler_family</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::duplicate</span><span class="plain-syntax">(</span><span class="identifier-syntax">format</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">format_options</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="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">full_format</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::new</span><span class="plain-syntax">();</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">full_format</span><span class="plain-syntax">, </span><span class="string-syntax">"%S/%S/v%v"</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">transpiler_family</span><span class="plain-syntax">, </span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::to_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">architecture</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">opts</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">opt</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">opt</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax">, </span><span class="identifier-syntax">opts</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">full_format</span><span class="plain-syntax">, </span><span class="string-syntax">"/%S"</span><span class="plain-syntax">, </span><span class="identifier-syntax">opt</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">ADD_TO_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">opt</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax">, </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">format_options</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">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">VM</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP4" class="paragraph-anchor"></a><b>§4. </b>Plumbing is included here to add "options" to a VM's textual description. The
|
|
idea is that these allow for the user to specify additional and VM-specific
|
|
command-line options (using <span class="extract"><span class="extract-syntax">-format</span></span>) which are then picked up by <a href="../final-module/index.html" class="internal">final</a>.
|
|
Thus, a request for <span class="extract"><span class="extract-syntax">-format=C/32d/no-halt/stack=240</span></span> would cause a new variant of
|
|
<span class="extract"><span class="extract-syntax">C/32d</span></span> to be created which would have the (purely hypothetical) list of
|
|
options <span class="extract"><span class="extract-syntax">I"no-halt", I"stack=240"</span></span>. It is then up to the C final code generator
|
|
to understand what these mean, if indeed they mean anything.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="function-syntax">TargetVMs::new_variant</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">TargetVMs::new_variant</span></span>:<br/><a href="2-tvm.html#SP6_3">§6.3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">existing</span><span class="plain-syntax">, </span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">opts</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-tvm.html#SP3" class="function-link"><span class="function-syntax">TargetVMs::new</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">existing</span><span class="plain-syntax">-></span><span class="element-syntax">architecture</span><span class="plain-syntax">, </span><span class="identifier-syntax">existing</span><span class="plain-syntax">-></span><span class="element-syntax">transpiler_family</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">existing</span><span class="plain-syntax">-></span><span class="element-syntax">version</span><span class="plain-syntax">, </span><span class="identifier-syntax">existing</span><span class="plain-syntax">-></span><span class="element-syntax">transpiled_extension</span><span class="plain-syntax">, </span><span class="identifier-syntax">existing</span><span class="plain-syntax">-></span><span class="element-syntax">VM_unblorbed_extension</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">existing</span><span class="plain-syntax">-></span><span class="element-syntax">VM_blorbed_extension</span><span class="plain-syntax">, </span><span class="identifier-syntax">existing</span><span class="plain-syntax">-></span><span class="element-syntax">default_browser_interpreter</span><span class="plain-syntax">, </span><span class="identifier-syntax">opts</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>§5. To and from text. </b>First, writing. This is the longhand form of the VM name:
|
|
</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">TargetVMs::write</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">TargetVMs::write</span></span>:<br/>Compatibility - <a href="2-cmp.html#SP5">§5</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</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">VM</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="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"%S"</span><span class="plain-syntax">, </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">full_format</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="function-syntax">TargetVMs::get_full_format_text</span><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</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">VM</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no VM"</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">full_format</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. </b>And now for reading. The following is used by <a href="../inbuild/index.html" class="internal">inbuild</a> when reading the
|
|
command-line option <span class="extract"><span class="extract-syntax">-format=T</span></span>: the text <span class="extract"><span class="extract-syntax">T</span></span> is supplied as a parameter here.
|
|
</p>
|
|
|
|
<p class="commentary">Note however that it actually calls <a href="2-tvm.html#SP6" class="internal">TargetVMs::find_with_hint</a>. The <span class="extract"><span class="extract-syntax">debug</span></span>
|
|
hint, if set, says to make the architecture have debugging enabled or not according
|
|
to this hint: thus <span class="extract"><span class="extract-syntax">"C"</span></span> plus the hint <span class="extract"><span class="extract-syntax">FALSE</span></span> will return the VM <span class="extract"><span class="extract-syntax">C/32</span></span>, while
|
|
<span class="extract"><span class="extract-syntax">"C"</span></span> plus the hint <span class="extract"><span class="extract-syntax">TRUE</span></span> will return the VM <span class="extract"><span class="extract-syntax">C/32d</span></span>. The hint <span class="extract"><span class="extract-syntax">NOT_APPLICABLE</span></span>
|
|
is ignored; and the hint is also ignored if the supplied text already definitely
|
|
specifies debugging. Thus <span class="extract"><span class="extract-syntax">"C/32d"</span></span> plus hint <span class="extract"><span class="extract-syntax">FALSE</span></span> will return <span class="extract"><span class="extract-syntax">C/32d</span></span>.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="function-syntax">TargetVMs::find</span><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">format</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-tvm.html#SP6" class="function-link"><span class="function-syntax">TargetVMs::find_with_hint</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">format</span><span class="plain-syntax">, </span><span class="identifier-syntax">NOT_APPLICABLE</span><span class="plain-syntax">); </span><span class="comment-syntax"> i.e., no hint</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="function-syntax">TargetVMs::find_with_hint</span><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">format</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">debug</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">format</span><span class="plain-syntax">) == </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="identifier-syntax">format</span><span class="plain-syntax"> = </span><span class="identifier-syntax">I</span><span class="string-syntax">"Inform6"</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">wanted_language</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_architecture</span><span class="plain-syntax"> *</span><span class="identifier-syntax">wanted_arch</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">semantic_version_number</span><span class="plain-syntax"> </span><span class="identifier-syntax">wanted_version</span><span class="plain-syntax"> = </span><span class="identifier-syntax">VersionNumbers::null</span><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">wanted_opts</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>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="2-tvm.html#SP6_1" class="named-paragraph-link"><span class="named-paragraph">Parse the text supplied into these variables</span><span class="named-paragraph-number">6.1</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">wanted_arch</span><span class="plain-syntax">) && (</span><a href="2-arc.html#SP6" class="function-link"><span class="function-syntax">Architectures::debug_enabled</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">wanted_arch</span><span class="plain-syntax">))) </span><span class="identifier-syntax">debug</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="2-tvm.html#SP6_2" class="named-paragraph-link"><span class="named-paragraph">Try to find a VM which is a perfect match</span><span class="named-paragraph-number">6.2</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="2-tvm.html#SP6_3" class="named-paragraph-link"><span class="named-paragraph">Try to find a VM which would be a match except for the options</span><span class="named-paragraph-number">6.3</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="2-tvm.html#SP6_4" class="named-paragraph-link"><span class="named-paragraph">Try to find a VM in the now-deprecated old notation</span><span class="named-paragraph-number">6.4</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP6_1" class="paragraph-anchor"></a><b>§6.1. </b>Format text is a list of criteria divided by slashes:
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Parse the text supplied into these variables</span><span class="named-paragraph-number">6.1</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">criterion</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">pos</span><span class="plain-syntax">, </span><span class="identifier-syntax">format</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::get</span><span class="plain-syntax">(</span><span class="identifier-syntax">pos</span><span class="plain-syntax">) == </span><span class="character-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">criterion</span><span class="plain-syntax">) > </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="named-paragraph-container code-font"><a href="2-tvm.html#SP6_1_1" class="named-paragraph-link"><span class="named-paragraph">Accept criterion</span><span class="named-paragraph-number">6.1.1</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::clear</span><span class="plain-syntax">(</span><span class="identifier-syntax">criterion</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">PUT_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">criterion</span><span class="plain-syntax">, </span><span class="identifier-syntax">Str::get</span><span class="plain-syntax">(</span><span class="identifier-syntax">pos</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">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">criterion</span><span class="plain-syntax">) > </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="named-paragraph-container code-font"><a href="2-tvm.html#SP6_1_1" class="named-paragraph-link"><span class="named-paragraph">Accept criterion</span><span class="named-paragraph-number">6.1.1</span></a></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">criterion</span><span class="plain-syntax">)</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-tvm.html#SP6">§6</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP6_1_1" class="paragraph-anchor"></a><b>§6.1.1. </b>The first criterion is the only compulsory one, and must be something like
|
|
<span class="extract"><span class="extract-syntax">Inform6</span></span> or <span class="extract"><span class="extract-syntax">C</span></span>. After that, any criterion in the form of an architecture code,
|
|
like <span class="extract"><span class="extract-syntax">32d</span></span>, is interpreted as such; and any criterion opening with <span class="extract"><span class="extract-syntax">v</span></span> plus a
|
|
digit is read as a semantic version number. If any criteria are left after all
|
|
that, they are considered options (see above).
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Accept criterion</span><span class="named-paragraph-number">6.1.1</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">wanted_language</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">wanted_language</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::duplicate</span><span class="plain-syntax">(</span><span class="identifier-syntax">criterion</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">inter_architecture</span><span class="plain-syntax"> *</span><span class="identifier-syntax">arch</span><span class="plain-syntax"> = </span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::from_codename_with_hint</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">criterion</span><span class="plain-syntax">, </span><span class="identifier-syntax">debug</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">arch</span><span class="plain-syntax">) </span><span class="identifier-syntax">wanted_arch</span><span class="plain-syntax"> = </span><span class="identifier-syntax">arch</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::get_at</span><span class="plain-syntax">(</span><span class="identifier-syntax">criterion</span><span class="plain-syntax">, </span><span class="constant-syntax">0</span><span class="plain-syntax">) == </span><span class="character-syntax">'v'</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">Str::get_at</span><span class="plain-syntax">(</span><span class="identifier-syntax">criterion</span><span class="plain-syntax">, </span><span class="constant-syntax">0</span><span class="plain-syntax">) == </span><span class="character-syntax">'V'</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">Characters::isdigit</span><span class="plain-syntax">(</span><span class="identifier-syntax">Str::get_at</span><span class="plain-syntax">(</span><span class="identifier-syntax">criterion</span><span class="plain-syntax">, </span><span class="constant-syntax">1</span><span class="plain-syntax">)))) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::delete_first_character</span><span class="plain-syntax">(</span><span class="identifier-syntax">criterion</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">wanted_version</span><span class="plain-syntax"> = </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">criterion</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">ADD_TO_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">Str::duplicate</span><span class="plain-syntax">(</span><span class="identifier-syntax">criterion</span><span class="plain-syntax">), </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax">, </span><span class="identifier-syntax">wanted_opts</span><span class="plain-syntax">);</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-tvm.html#SP6_1">§6.1</a> (twice).</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP6_2" class="paragraph-anchor"></a><b>§6.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Try to find a VM which is a perfect match</span><span class="named-paragraph-number">6.2</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">result</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER</span><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">, </span><span class="reserved-syntax">target_vm</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::eq_insensitive</span><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">transpiler_family</span><span class="plain-syntax">, </span><span class="identifier-syntax">wanted_language</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> ((</span><span class="identifier-syntax">wanted_arch</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">architecture</span><span class="plain-syntax"> == </span><span class="identifier-syntax">wanted_arch</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> ((</span><span class="identifier-syntax">debug</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NOT_APPLICABLE</span><span class="plain-syntax">) || (</span><a href="2-tvm.html#SP9" class="function-link"><span class="function-syntax">TargetVMs::debug_enabled</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">) == </span><span class="identifier-syntax">debug</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="2-tvm.html#SP7" class="function-link"><span class="function-syntax">TargetVMs::versions_match</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">, </span><span class="identifier-syntax">wanted_version</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="2-tvm.html#SP8" class="function-link"><span class="function-syntax">TargetVMs::options_match</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">, </span><span class="identifier-syntax">wanted_opts</span><span class="plain-syntax">)))</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">result</span><span class="plain-syntax"> = </span><span class="identifier-syntax">VM</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">result</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">result</span><span class="plain-syntax">;</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-tvm.html#SP6">§6</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP6_3" class="paragraph-anchor"></a><b>§6.3. </b>If we're given, say, <span class="extract"><span class="extract-syntax">C/32d/no-pointer-nonsense</span></span> and we can't find that exact
|
|
thing, but can find <span class="extract"><span class="extract-syntax">C/32d</span></span>, then we construct a variant of it which does have
|
|
the option <span class="extract"><span class="extract-syntax">no-pointer-nonsense</span></span> and return that.
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Try to find a VM which would be a match except for the options</span><span class="named-paragraph-number">6.3</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">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">result</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER</span><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">, </span><span class="reserved-syntax">target_vm</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::eq_insensitive</span><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">transpiler_family</span><span class="plain-syntax">, </span><span class="identifier-syntax">wanted_language</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> ((</span><span class="identifier-syntax">wanted_arch</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">architecture</span><span class="plain-syntax"> == </span><span class="identifier-syntax">wanted_arch</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> ((</span><span class="identifier-syntax">debug</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NOT_APPLICABLE</span><span class="plain-syntax">) || (</span><a href="2-tvm.html#SP9" class="function-link"><span class="function-syntax">TargetVMs::debug_enabled</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">) == </span><span class="identifier-syntax">debug</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="2-tvm.html#SP7" class="function-link"><span class="function-syntax">TargetVMs::versions_match</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">, </span><span class="identifier-syntax">wanted_version</span><span class="plain-syntax">)))</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">result</span><span class="plain-syntax"> = </span><span class="identifier-syntax">VM</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">result</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-tvm.html#SP4" class="function-link"><span class="function-syntax">TargetVMs::new_variant</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">result</span><span class="plain-syntax">, </span><span class="identifier-syntax">wanted_opts</span><span class="plain-syntax">);</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-tvm.html#SP6">§6</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP6_4" class="paragraph-anchor"></a><b>§6.4. </b>If we get here, we've failed to make any match using the modern notation.
|
|
</p>
|
|
|
|
<p class="commentary">So next we try to deduce a VM from the given filename extension, which is the
|
|
clumsy way that VMs used to be referred to on the <a href="../inform7/index.html" class="internal">inform7</a> command line. For
|
|
example, <span class="extract"><span class="extract-syntax">-format=ulx</span></span> produces <span class="extract"><span class="extract-syntax">Inform6/32</span></span> or <span class="extract"><span class="extract-syntax">Inform6/32d</span></span> (depending on
|
|
the <span class="extract"><span class="extract-syntax">debug</span></span> hint).
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Try to find a VM in the now-deprecated old notation</span><span class="named-paragraph-number">6.4</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">result</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">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">file_extension</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">file_extension</span><span class="plain-syntax">, </span><span class="identifier-syntax">format</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::get_first_char</span><span class="plain-syntax">(</span><span class="identifier-syntax">file_extension</span><span class="plain-syntax">) == </span><span class="character-syntax">'.'</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::delete_first_character</span><span class="plain-syntax">(</span><span class="identifier-syntax">file_extension</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">pos</span><span class="plain-syntax">, </span><span class="identifier-syntax">file_extension</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::put</span><span class="plain-syntax">(</span><span class="identifier-syntax">pos</span><span class="plain-syntax">, </span><span class="identifier-syntax">Characters::tolower</span><span class="plain-syntax">(</span><span class="identifier-syntax">Str::get</span><span class="plain-syntax">(</span><span class="identifier-syntax">pos</span><span class="plain-syntax">)));</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER</span><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">, </span><span class="reserved-syntax">target_vm</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::eq_insensitive</span><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">VM_unblorbed_extension</span><span class="plain-syntax">, </span><span class="identifier-syntax">file_extension</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="2-tvm.html#SP9" class="function-link"><span class="function-syntax">TargetVMs::debug_enabled</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">) == </span><span class="identifier-syntax">debug</span><span class="plain-syntax">))</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">result</span><span class="plain-syntax"> = </span><span class="identifier-syntax">VM</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">file_extension</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">result</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">STDOUT</span><span class="plain-syntax">, </span><span class="string-syntax">"(-format=%S is deprecated: try -format=%S/%S instead)\n"</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">format</span><span class="plain-syntax">, </span><span class="identifier-syntax">result</span><span class="plain-syntax">-></span><span class="element-syntax">transpiler_family</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><a href="2-arc.html#SP5" class="function-link"><span class="function-syntax">Architectures::to_codename</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">result</span><span class="plain-syntax">-></span><span class="element-syntax">architecture</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">result</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-tvm.html#SP6">§6</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>§7. </b>Semantic version rules apply if the user supplies a format text with a given
|
|
version requirement. If the user asks for <span class="extract"><span class="extract-syntax">v3.1.0</span></span> and we've got <span class="extract"><span class="extract-syntax">v3.1.2</span></span>,
|
|
no problem: there's a match. But <span class="extract"><span class="extract-syntax">v2.9.3</span></span> or <span class="extract"><span class="extract-syntax">3.2.1</span></span> would not match.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">TargetVMs::versions_match</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">TargetVMs::versions_match</span></span>:<br/><a href="2-tvm.html#SP6_2">§6.2</a>, <a href="2-tvm.html#SP6_3">§6.3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</span><span class="plain-syntax">, </span><span class="identifier-syntax">semantic_version_number</span><span class="plain-syntax"> </span><span class="identifier-syntax">wanted</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">wanted</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>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">VersionNumberRanges::in_range</span><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">version</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumberRanges::compatibility_range</span><span class="plain-syntax">(</span><span class="identifier-syntax">wanted</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>
|
|
<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>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP8" class="paragraph-anchor"></a><b>§8. </b>That just leaves how to tell whether or not a VM has exactly the right options,
|
|
given that (a) there can be any number of them, including 0, and (b) they can
|
|
be specified in any order. Speed is unimportant here: in effect we test whether
|
|
two lists of options give rise to sets which are subsets of each other.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">TargetVMs::options_match</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">TargetVMs::options_match</span></span>:<br/><a href="2-tvm.html#SP6_2">§6.2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</span><span class="plain-syntax">, </span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">supplied</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><a href="2-tvm.html#SP8" class="function-link"><span class="function-syntax">TargetVMs::ll_of_text_is_subset</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">supplied</span><span class="plain-syntax">, </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">format_options</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="2-tvm.html#SP8" class="function-link"><span class="function-syntax">TargetVMs::ll_of_text_is_subset</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">format_options</span><span class="plain-syntax">, </span><span class="identifier-syntax">supplied</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">TRUE</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">FALSE</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">TargetVMs::ll_of_text_is_subset</span><span class="plain-syntax">(</span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">A</span><span class="plain-syntax">, </span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">B</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">opt</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">opt</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax">, </span><span class="identifier-syntax">A</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">found</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">opt2</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">opt2</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax">, </span><span class="identifier-syntax">B</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::eq</span><span class="plain-syntax">(</span><span class="identifier-syntax">opt</span><span class="plain-syntax">, </span><span class="identifier-syntax">opt2</span><span class="plain-syntax">)) </span><span class="identifier-syntax">found</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</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">found</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</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>
|
|
<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">TRUE</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP9" class="paragraph-anchor"></a><b>§9. Architectural provisions. </b></p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">TargetVMs::is_16_bit</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">TargetVMs::is_16_bit</span></span>:<br/>Compatibility - <a href="2-cmp.html#SP10_2">§10.2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</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">VM</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no VM"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-arc.html#SP6" class="function-link"><span class="function-syntax">Architectures::is_16_bit</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">architecture</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">TargetVMs::debug_enabled</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">TargetVMs::debug_enabled</span></span>:<br/><a href="2-tvm.html#SP6_2">§6.2</a>, <a href="2-tvm.html#SP6_3">§6.3</a>, <a href="2-tvm.html#SP6_4">§6.4</a><br/>Compatibility - <a href="2-cmp.html#SP10_1">§10.1</a>, <a href="2-cmp.html#SP10_2">§10.2</a>, <a href="2-cmp.html#SP10_3">§10.3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</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">VM</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no VM"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-arc.html#SP6" class="function-link"><span class="function-syntax">Architectures::debug_enabled</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">architecture</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">TargetVMs::supports_floating_point</span><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</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">VM</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no VM"</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">supports_floating_point</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">TargetVMs::allow_this_many_locals</span><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">N</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">VM</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no VM"</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">max_locals</span><span class="plain-syntax"> >= </span><span class="constant-syntax">0</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">max_locals</span><span class="plain-syntax"> < </span><span class="identifier-syntax">N</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>
|
|
<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>
|
|
<span class="plain-syntax">}</span>
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">TargetVMs::allow_MAX_LOCAL_VARIABLES</span><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</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">VM</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no VM"</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">max_locals</span><span class="plain-syntax"> > </span><span class="constant-syntax">15</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>
|
|
<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>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP10" class="paragraph-anchor"></a><b>§10. File extension provisions. </b>The normal or unblorbed file extension is just a hint for what would make a
|
|
natural filename for our output: for example, <span class="extract"><span class="extract-syntax">py</span></span> would be a natural choice
|
|
for a Python VN, if there were one.
|
|
</p>
|
|
|
|
<p class="commentary">When releasing a blorbed story file, the file extension used depends on the
|
|
story file wrapped inside. (This is a dubious idea, in the opinion of
|
|
the author of Inform — should not "blorb" be one unified wrapper? — but
|
|
that ship seems to have sailed.)
|
|
</p>
|
|
|
|
<p class="commentary">Note that for VMs not using Inform 6, blorbing is essentially meaningless,
|
|
and then the blorbed extension may be the empty text.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="function-syntax">TargetVMs::get_transpiled_extension</span><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</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">VM</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no VM"</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">transpiled_extension</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="function-syntax">TargetVMs::get_unblorbed_extension</span><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</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">VM</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no VM"</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">VM_unblorbed_extension</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="function-syntax">TargetVMs::get_blorbed_extension</span><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</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">VM</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no VM"</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">VM_blorbed_extension</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP11" class="paragraph-anchor"></a><b>§11. </b>This is the format name as expressed in an iFiction bibliographic record,
|
|
where it's not meaningful to talk about debugging features or the number
|
|
of bits, and where it's currently not possible to express a VM version number.
|
|
</p>
|
|
|
|
<p class="commentary">It's also unclear what to write to this if we're compiling, say, an Inform 7
|
|
source text into C: the Treaty of Babel is unclear on that. For now, we write
|
|
<span class="extract"><span class="extract-syntax">Inform7+C</span></span>.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="function-syntax">TargetVMs::get_iFiction_format</span><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</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">VM</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no VM"</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">iFiction_format_name</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">inter_architecture</span><span class="plain-syntax"> *</span><span class="function-syntax">TargetVMs::get_architecture</span><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</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">VM</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no VM"</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">architecture</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP12" class="paragraph-anchor"></a><b>§12. </b>Different VMs have different in-browser interpreters, which means that
|
|
<a href="../inblorb/index.html" class="internal">inblorb</a> needs to be given different release instructions for them. If the
|
|
user doesn't specify any particular interpreter, she gets the following.
|
|
</p>
|
|
|
|
<p class="commentary">On some platforms this will make no sense, and in those cases the function
|
|
will return the empty text.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="function-syntax">TargetVMs::get_default_interpreter</span><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</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">VM</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no VM"</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">default_browser_interpreter</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP13" class="paragraph-anchor"></a><b>§13. Family compatibility. </b></p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="function-syntax">TargetVMs::family</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">TargetVMs::family</span></span>:<br/>Compatibility - <a href="2-cmp.html#SP10_4">§10.4</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</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">VM</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no VM"</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">transpiler_family</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">TargetVMs::compatible_with</span><button class="popup" onclick="togglePopup('usagePopup10')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup10">Usage of <span class="code-font"><span class="function-syntax">TargetVMs::compatible_with</span></span>:<br/>Compatibility - <a href="2-cmp.html#SP10_1">§10.1</a>, <a href="2-cmp.html#SP10_3">§10.3</a>, <a href="2-cmp.html#SP10_4">§10.4</a>, <a href="2-cmp.html#SP10_5">§10.5</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">token</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::eq_insensitive</span><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">-></span><span class="element-syntax">transpiler_family</span><span class="plain-syntax">, </span><span class="identifier-syntax">token</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>
|
|
<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>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP14" class="paragraph-anchor"></a><b>§14. Options. </b>Final code-generators can call this to see what special requests were made.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="function-syntax">TargetVMs::option_list</span><span class="plain-syntax">(</span><span class="reserved-syntax">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">VM</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">VM</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no VM"</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">VM</span><span class="plain-syntax">-></span><span class="element-syntax">format_options</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
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