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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Compatibility</title>
<link href="../docs-assets/Breadcrumbs.css" rel="stylesheet" rev="stylesheet" type="text/css">
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<body class="commentary-font">
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<h1><a href="../index.html">
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</a></h1>
<ul><li><a href="../compiler.html">compiler tools</a></li>
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</ul><h2>Compiler Webs</h2><ul>
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<li><a href="../inter/index.html">inter</a></li>
</ul><h2>Inbuild Modules</h2><ul>
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</ul><h2>Inform7 Modules</h2><ul>
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</ul><h2>Shared Modules</h2><ul>
<li><a href="index.html"><span class="selectedlink">arch</span></a></li>
<li><a href="../syntax-module/index.html">syntax</a></li>
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<main role="main">
<!--Weave of 'Compatibility' generated by Inweb-->
<div class="breadcrumbs">
<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../compiler.html">Shared Modules</a></li><li><a href="index.html">arch</a></li><li><a href="index.html#2">Chapter 2: Architectures</a></li><li><b>Compatibility</b></li></ul></div>
<p class="purpose">To manage compatibility lists: what can be compiled to what format.</p>
<p class="commentary firstcommentary"><a id="SP1"></a><b>&#167;1. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<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">compatibility_specification</span><span class="plain-syntax"> {</span>
<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">parsed_from</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">default_allows</span><span class="plain-syntax">;</span>
<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">exceptions</span><span class="plain-syntax">; </span><span class="comment-syntax"> of </span><span class="extract"><span class="extract-syntax">target_vm</span></span>
<span class="plain-syntax"> </span><span class="identifier-syntax">MEMORY_MANAGEMENT</span>
<span class="plain-syntax">} </span><span class="reserved-syntax">compatibility_specification</span><span class="plain-syntax">;</span>
<span class="reserved-syntax">compatibility_specification</span><span class="plain-syntax"> *</span><span class="function-syntax">Compatibility::all</span><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">compatibility_specification</span><span class="plain-syntax"> *</span><span class="identifier-syntax">C</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">compatibility_specification</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">parsed_from</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">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">default_allows</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">exceptions</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NEW_LINKED_LIST</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">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">C</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">Compatibility::universal</span><span class="plain-syntax">(</span><span class="reserved-syntax">compatibility_specification</span><span class="plain-syntax"> *</span><span class="identifier-syntax">C</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">C</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">LinkedLists::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">exceptions</span><span class="plain-syntax">) &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">default_allows</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="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">void</span><span class="plain-syntax"> </span><span class="function-syntax">Compatibility::write</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="reserved-syntax">compatibility_specification</span><span class="plain-syntax"> *</span><span class="identifier-syntax">C</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">C</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">"for none"</span><span class="plain-syntax">); </span><span class="reserved-syntax">return</span><span class="plain-syntax">; }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">x</span><span class="plain-syntax"> = </span><span class="identifier-syntax">LinkedLists::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">exceptions</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">x</span><span class="plain-syntax"> == </span><span class="constant-syntax">0</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">default_allows</span><span class="plain-syntax">) </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"for all"</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">"for 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="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">default_allows</span><span class="plain-syntax">) </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"not "</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"for "</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">n</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">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_LINKED_LIST</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="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">exceptions</span><span class="plain-syntax">) {</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">n</span><span class="plain-syntax"> &gt; </span><span class="constant-syntax">1</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">n</span><span class="plain-syntax"> &lt; </span><span class="identifier-syntax">x</span><span class="plain-syntax">)) </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">", "</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">n</span><span class="plain-syntax"> &gt; </span><span class="constant-syntax">1</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">n</span><span class="plain-syntax"> == </span><span class="identifier-syntax">x</span><span class="plain-syntax">)) </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">" or "</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-tvm.html#SP1" class="function-link"><span class="function-syntax">TargetVMs::write</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">VM</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">compatibility_specification</span><span class="plain-syntax"> *</span><span class="function-syntax">Compatibility::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">text</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">compatibility_specification</span><span class="plain-syntax"> *</span><span class="identifier-syntax">C</span><span class="plain-syntax"> = </span><a href="2-cmp.html#SP1" class="function-link"><span class="function-syntax">Compatibility::all</span></a><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">incorrect</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">text</span><span class="plain-syntax">) == </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">C</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">parse</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">parse</span><span class="plain-syntax">, </span><span class="string-syntax">"%S"</span><span class="plain-syntax">, </span><span class="identifier-syntax">text</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">parsed_from</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::duplicate</span><span class="plain-syntax">(</span><span class="identifier-syntax">parse</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::trim_white_space</span><span class="plain-syntax">(</span><span class="identifier-syntax">parse</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">parse</span><span class="plain-syntax">) == </span><span class="character-syntax">'('</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">Str::get_last_char</span><span class="plain-syntax">(</span><span class="identifier-syntax">parse</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">parse</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::delete_last_character</span><span class="plain-syntax">(</span><span class="identifier-syntax">parse</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::trim_white_space</span><span class="plain-syntax">(</span><span class="identifier-syntax">parse</span><span class="plain-syntax">);</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">parse</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="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">default_allows</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">match_results</span><span class="plain-syntax"> </span><span class="identifier-syntax">mr</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Regexp::create_mr</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">negated</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Regexp::match</span><span class="plain-syntax">(&amp;</span><span class="identifier-syntax">mr</span><span class="plain-syntax">, </span><span class="identifier-syntax">parse</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">"not (%c+)"</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">parse</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">parse</span><span class="plain-syntax">, </span><span class="string-syntax">"%S"</span><span class="plain-syntax">, </span><span class="identifier-syntax">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[0]);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::trim_white_space</span><span class="plain-syntax">(</span><span class="identifier-syntax">parse</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">default_allows</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">negated</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">Regexp::match</span><span class="plain-syntax">(&amp;</span><span class="identifier-syntax">mr</span><span class="plain-syntax">, </span><span class="identifier-syntax">parse</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">"for (%c+)"</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">parse</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">parse</span><span class="plain-syntax">, </span><span class="string-syntax">"%S"</span><span class="plain-syntax">, </span><span class="identifier-syntax">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[0]);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::trim_white_space</span><span class="plain-syntax">(</span><span class="identifier-syntax">parse</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">Regexp::match</span><span class="plain-syntax">(&amp;</span><span class="identifier-syntax">mr</span><span class="plain-syntax">, </span><span class="identifier-syntax">parse</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">"(%c+) only"</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">parse</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">parse</span><span class="plain-syntax">, </span><span class="string-syntax">"%S"</span><span class="plain-syntax">, </span><span class="identifier-syntax">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[0]);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::trim_white_space</span><span class="plain-syntax">(</span><span class="identifier-syntax">parse</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">negated</span><span class="plain-syntax">) </span><span class="identifier-syntax">incorrect</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">; </span><span class="comment-syntax"> "not for 32d only"</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">parse</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"all"</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">negated</span><span class="plain-syntax">) </span><span class="identifier-syntax">incorrect</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">; </span><span class="comment-syntax"> "not for all"</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">default_allows</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">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::eq</span><span class="plain-syntax">(</span><span class="identifier-syntax">parse</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"none"</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">negated</span><span class="plain-syntax">) </span><span class="identifier-syntax">incorrect</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">; </span><span class="comment-syntax"> "not for none"</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">default_allows</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">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-cmp.html#SP1" class="function-link"><span class="function-syntax">Compatibility::clause</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">, </span><span class="identifier-syntax">parse</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">incorrect</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">parse</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Regexp::dispose_of</span><span class="plain-syntax">(&amp;</span><span class="identifier-syntax">mr</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">incorrect</span><span class="plain-syntax">) </span><span class="identifier-syntax">C</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">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">C</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<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">compat_parser_state</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">compatibility_specification</span><span class="plain-syntax"> *</span><span class="identifier-syntax">C</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">current_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="identifier-syntax">version_allowed</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">version_required</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">family_used</span><span class="plain-syntax">;</span>
<span class="plain-syntax">} </span><span class="reserved-syntax">compat_parser_state</span><span class="plain-syntax">;</span>
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">Compatibility::clause</span><span class="plain-syntax">(</span><span class="reserved-syntax">compatibility_specification</span><span class="plain-syntax"> *</span><span class="identifier-syntax">C</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">text</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">correct</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">match_results</span><span class="plain-syntax"> </span><span class="identifier-syntax">mr</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Regexp::create_mr</span><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">compat_parser_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">cps</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cps</span><span class="plain-syntax">.</span><span class="element-syntax">C</span><span class="plain-syntax"> = </span><span class="identifier-syntax">C</span><span class="plain-syntax">; </span><span class="identifier-syntax">cps</span><span class="plain-syntax">.</span><span class="element-syntax">version_allowed</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">; </span><span class="identifier-syntax">cps</span><span class="plain-syntax">.</span><span class="element-syntax">version_required</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">cps</span><span class="plain-syntax">.</span><span class="element-syntax">current_family</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">; </span><span class="identifier-syntax">cps</span><span class="plain-syntax">.</span><span class="element-syntax">family_used</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">while</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Regexp::match</span><span class="plain-syntax">(&amp;</span><span class="identifier-syntax">mr</span><span class="plain-syntax">, </span><span class="identifier-syntax">text</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">"(%C+) (%c+)"</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">comma</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::get_last_char</span><span class="plain-syntax">(</span><span class="identifier-syntax">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[0]) == </span><span class="character-syntax">','</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">comma</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::delete_last_character</span><span class="plain-syntax">(</span><span class="identifier-syntax">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[0]);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::trim_white_space</span><span class="plain-syntax">(</span><span class="identifier-syntax">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[0]);</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">with</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NOT_APPLICABLE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">match_results</span><span class="plain-syntax"> </span><span class="identifier-syntax">mr2</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Regexp::create_mr</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">Regexp::match</span><span class="plain-syntax">(&amp;</span><span class="identifier-syntax">mr2</span><span class="plain-syntax">, </span><span class="identifier-syntax">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[1], </span><span class="identifier-syntax">L</span><span class="string-syntax">"with debugging,* *(%c*)"</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">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[1]);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::copy</span><span class="plain-syntax">(</span><span class="identifier-syntax">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[1], </span><span class="identifier-syntax">mr2</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[0]);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">with</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">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Regexp::match</span><span class="plain-syntax">(&amp;</span><span class="identifier-syntax">mr2</span><span class="plain-syntax">, </span><span class="identifier-syntax">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[1], </span><span class="identifier-syntax">L</span><span class="string-syntax">"without debugging,* *(%c*)"</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">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[1]);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Str::copy</span><span class="plain-syntax">(</span><span class="identifier-syntax">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[1], </span><span class="identifier-syntax">mr2</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[0]);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">with</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="identifier-syntax">Regexp::dispose_of</span><span class="plain-syntax">(&amp;</span><span class="identifier-syntax">mr2</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">correct</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">correct</span><span class="plain-syntax"> &amp;&amp; </span><a href="2-cmp.html#SP1" class="function-link"><span class="function-syntax">Compatibility::word</span></a><span class="plain-syntax">(&amp;</span><span class="identifier-syntax">cps</span><span class="plain-syntax">, </span><span class="identifier-syntax">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[0], </span><span class="identifier-syntax">with</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">comma</span><span class="plain-syntax">) </span><span class="identifier-syntax">correct</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">correct</span><span class="plain-syntax"> &amp;&amp; </span><a href="2-cmp.html#SP1" class="function-link"><span class="function-syntax">Compatibility::word</span></a><span class="plain-syntax">(&amp;</span><span class="identifier-syntax">cps</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"or"</span><span class="plain-syntax">, </span><span class="identifier-syntax">with</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">text</span><span class="plain-syntax">); </span><span class="identifier-syntax">Str::copy</span><span class="plain-syntax">(</span><span class="identifier-syntax">text</span><span class="plain-syntax">, </span><span class="identifier-syntax">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[1]);</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">text</span><span class="plain-syntax">) &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">correct</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">correct</span><span class="plain-syntax"> &amp;&amp; </span><a href="2-cmp.html#SP1" class="function-link"><span class="function-syntax">Compatibility::word</span></a><span class="plain-syntax">(&amp;</span><span class="identifier-syntax">cps</span><span class="plain-syntax">, </span><span class="identifier-syntax">text</span><span class="plain-syntax">, </span><span class="identifier-syntax">NOT_APPLICABLE</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">correct</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">cps</span><span class="plain-syntax">.</span><span class="element-syntax">family_used</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">cps</span><span class="plain-syntax">.</span><span class="element-syntax">current_family</span><span class="plain-syntax">) &gt; </span><span class="constant-syntax">0</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">cps</span><span class="plain-syntax">.</span><span class="element-syntax">current_family</span><span class="plain-syntax">, </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">family_name</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><a href="2-cmp.html#SP1" class="function-link"><span class="function-syntax">Compatibility::add</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">, </span><span class="identifier-syntax">VM</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Regexp::dispose_of</span><span class="plain-syntax">(&amp;</span><span class="identifier-syntax">mr</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">correct</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">Compatibility::word</span><span class="plain-syntax">(</span><span class="reserved-syntax">compat_parser_state</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cps</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">word</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">with</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">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">version_allowed</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">semantic_version_number</span><span class="plain-syntax"> </span><span class="identifier-syntax">V</span><span class="plain-syntax"> = </span><span class="identifier-syntax">VersionNumbers::from_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">word</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">VersionNumbers::is_null</span><span class="plain-syntax">(</span><span class="identifier-syntax">V</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">version_required</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">else</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">current_family</span><span class="plain-syntax">) == </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">family_used</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">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">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">seen</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">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">-&gt;</span><span class="element-syntax">family_name</span><span class="plain-syntax">, </span><span class="identifier-syntax">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">current_family</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">seen</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">VersionNumbers::eq</span><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">version</span><span class="plain-syntax">, </span><span class="identifier-syntax">V</span><span class="plain-syntax">)) &amp;&amp;</span>
<span class="plain-syntax"> ((</span><span class="identifier-syntax">with</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NOT_APPLICABLE</span><span class="plain-syntax">) || (</span><a href="2-tvm.html#SP1" 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">with</span><span class="plain-syntax">)))</span>
<span class="plain-syntax"> </span><a href="2-cmp.html#SP1" class="function-link"><span class="function-syntax">Compatibility::add</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">C</span><span class="plain-syntax">, </span><span class="identifier-syntax">VM</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">version_required</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">seen</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::eq_insensitive</span><span class="plain-syntax">(</span><span class="identifier-syntax">word</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"or"</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">with</span><span class="plain-syntax"> != </span><span class="identifier-syntax">NOT_APPLICABLE</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="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">word</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"version"</span><span class="plain-syntax">)) ||</span>
<span class="plain-syntax"> (</span><span class="identifier-syntax">Str::eq_insensitive</span><span class="plain-syntax">(</span><span class="identifier-syntax">word</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"versions"</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">with</span><span class="plain-syntax"> != </span><span class="identifier-syntax">NOT_APPLICABLE</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="identifier-syntax">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">version_required</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">version_allowed</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">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">version_required</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">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">version_allowed</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="identifier-syntax">bits</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NOT_APPLICABLE</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">word</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"16-bit"</span><span class="plain-syntax">)) </span><span class="identifier-syntax">bits</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">Str::eq_insensitive</span><span class="plain-syntax">(</span><span class="identifier-syntax">word</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"32-bit"</span><span class="plain-syntax">)) </span><span class="identifier-syntax">bits</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">bits</span><span class="plain-syntax"> != </span><span class="identifier-syntax">NOT_APPLICABLE</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><a href="2-tvm.html#SP1" class="function-link"><span class="function-syntax">TargetVMs::is_16_bit</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">) == </span><span class="identifier-syntax">bits</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">with</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NOT_APPLICABLE</span><span class="plain-syntax">) || (</span><a href="2-tvm.html#SP1" 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">with</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><a href="2-cmp.html#SP1" class="function-link"><span class="function-syntax">Compatibility::add</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">C</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">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">current_family</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">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">family_used</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="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">with</span><span class="plain-syntax"> != </span><span class="identifier-syntax">NOT_APPLICABLE</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">seen</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">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">-&gt;</span><span class="element-syntax">family_name</span><span class="plain-syntax">, </span><span class="identifier-syntax">word</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">seen</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><a href="2-tvm.html#SP1" 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">with</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><a href="2-cmp.html#SP1" class="function-link"><span class="function-syntax">Compatibility::add</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">C</span><span class="plain-syntax">, </span><span class="identifier-syntax">VM</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">current_family</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">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">family_used</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">seen</span><span class="plain-syntax">;</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">-&gt;</span><span class="element-syntax">family_name</span><span class="plain-syntax">, </span><span class="identifier-syntax">word</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cps</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">current_family</span><span class="plain-syntax"> = </span><span class="identifier-syntax">VM</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">family_name</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="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">Compatibility::add</span><span class="plain-syntax">(</span><span class="reserved-syntax">compatibility_specification</span><span class="plain-syntax"> *</span><span class="identifier-syntax">C</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">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">already_there</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">target_vm</span><span class="plain-syntax"> *</span><span class="identifier-syntax">X</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">X</span><span class="plain-syntax">, </span><span class="reserved-syntax">target_vm</span><span class="plain-syntax">, </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">exceptions</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">X</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">already_there</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">already_there</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">ADD_TO_LINKED_LIST</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="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">exceptions</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">already_there</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">Compatibility::with</span><span class="plain-syntax">(</span><span class="reserved-syntax">compatibility_specification</span><span class="plain-syntax"> *</span><span class="identifier-syntax">C</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">C</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">decision</span><span class="plain-syntax"> = </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">default_allows</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">X</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">X</span><span class="plain-syntax">, </span><span class="reserved-syntax">target_vm</span><span class="plain-syntax">, </span><span class="identifier-syntax">C</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">exceptions</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">X</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">decision</span><span class="plain-syntax"> = </span><span class="identifier-syntax">decision</span><span class="plain-syntax">?</span><span class="identifier-syntax">FALSE: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">decision</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<ul class="endnotetexts"><li>The structure compatibility_specification is private to this section.</li><li>The structure compat_parser_state is private to this section.</li></ul>
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