mirror of
https://github.com/ganelson/inform.git
synced 2024-07-03 07:24:58 +03:00
505 lines
92 KiB
HTML
505 lines
92 KiB
HTML
<!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">
|
|
<meta name="viewport" content="width=device-width initial-scale=1">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
|
<meta http-equiv="Content-Language" content="en-gb">
|
|
|
|
<link href="../docs-assets/Contents.css" rel="stylesheet" rev="stylesheet" type="text/css">
|
|
<link href="../docs-assets/Progress.css" rel="stylesheet" rev="stylesheet" type="text/css">
|
|
<link href="../docs-assets/Navigation.css" rel="stylesheet" rev="stylesheet" type="text/css">
|
|
<link href="../docs-assets/Fonts.css" rel="stylesheet" rev="stylesheet" type="text/css">
|
|
<link href="../docs-assets/Base.css" rel="stylesheet" rev="stylesheet" type="text/css">
|
|
<script>
|
|
function togglePopup(material_id) {
|
|
var popup = document.getElementById(material_id);
|
|
popup.classList.toggle("show");
|
|
}
|
|
</script>
|
|
|
|
<link href="../docs-assets/Popups.css" rel="stylesheet" rev="stylesheet" type="text/css">
|
|
<link href="../docs-assets/Colours.css" rel="stylesheet" rev="stylesheet" type="text/css">
|
|
|
|
</head>
|
|
<body class="commentary-font">
|
|
<nav role="navigation">
|
|
<h1><a href="../index.html">
|
|
<img src="../docs-assets/Inform.png" height=72">
|
|
</a></h1>
|
|
<ul><li><a href="../compiler.html">compiler tools</a></li>
|
|
<li><a href="../other.html">other tools</a></li>
|
|
<li><a href="../extensions.html">extensions and kits</a></li>
|
|
<li><a href="../units.html">unit test tools</a></li>
|
|
</ul><h2>Compiler Webs</h2><ul>
|
|
<li><a href="../inbuild/index.html">inbuild</a></li>
|
|
<li><a href="../inform7/index.html">inform7</a></li>
|
|
<li><a href="../inter/index.html">inter</a></li>
|
|
</ul><h2>Inbuild Modules</h2><ul>
|
|
<li><a href="../supervisor-module/index.html">supervisor</a></li>
|
|
</ul><h2>Inform7 Modules</h2><ul>
|
|
<li><a href="../core-module/index.html">core</a></li>
|
|
<li><a href="../assertions-module/index.html">assertions</a></li>
|
|
<li><a href="../values-module/index.html">values</a></li>
|
|
<li><a href="../knowledge-module/index.html">knowledge</a></li>
|
|
<li><a href="../imperative-module/index.html">imperative</a></li>
|
|
<li><a href="../runtime-module/index.html">runtime</a></li>
|
|
<li><a href="../if-module/index.html">if</a></li>
|
|
<li><a href="../multimedia-module/index.html">multimedia</a></li>
|
|
<li><a href="../index-module/index.html">index</a></li>
|
|
</ul><h2>Inter Modules</h2><ul>
|
|
<li><a href="../bytecode-module/index.html">bytecode</a></li>
|
|
<li><a href="../building-module/index.html">building</a></li>
|
|
<li><a href="../pipeline-module/index.html">pipeline</a></li>
|
|
<li><a href="../final-module/index.html">final</a></li>
|
|
</ul><h2>Services</h2><ul>
|
|
<li><a href="index.html"><span class="selectedlink">arch</span></a></li>
|
|
<li><a href="../calculus-module/index.html">calculus</a></li>
|
|
<li><a href="../html-module/index.html">html</a></li>
|
|
<li><a href="../inflections-module/index.html">inflections</a></li>
|
|
<li><a href="../kinds-module/index.html">kinds</a></li>
|
|
<li><a href="../linguistics-module/index.html">linguistics</a></li>
|
|
<li><a href="../problems-module/index.html">problems</a></li>
|
|
<li><a href="../syntax-module/index.html">syntax</a></li>
|
|
<li><a href="../words-module/index.html">words</a></li>
|
|
<li><a href="../../../inweb/docs/foundation-module/index.html">foundation</a></li>
|
|
|
|
</ul>
|
|
</nav>
|
|
<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">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>Compatibility</b></li></ul></div>
|
|
<p class="purpose">To manage specifications of compatibility with some VMs but not others.</p>
|
|
|
|
<ul class="toc"><li><a href="2-cmp.html#SP1">§1. Specifications</a></li><li><a href="2-cmp.html#SP5">§5. Converting to text</a></li><li><a href="2-cmp.html#SP6">§6. Converting from text</a></li><li><a href="2-cmp.html#SP11">§11. Testing</a></li></ul><hr class="tocbar">
|
|
|
|
<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. Specifications. </b>An object of the following class can represent any subset of VMs, so
|
|
it's a fully general way to express which VMs some piece of software works with:
|
|
</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="comment-syntax"> if it came from text</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">CLASS_DEFINITION</span>
|
|
<span class="plain-syntax">} </span><span class="reserved-syntax">compatibility_specification</span><span class="plain-syntax">;</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>The structure compatibility_specification is private to this section.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. </b>The creator function for this always begins with a specification meaning
|
|
"works with all VMs":
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">compatibility_specification</span><span class="plain-syntax"> *</span><span class="function-syntax">Compatibility::all</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">Compatibility::all</span></span>:<br/><a href="2-cmp.html#SP6">§6</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">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">-></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">-></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">-></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>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>§3. </b>We can then change this in two ways: one is to reverse the default...
|
|
</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">Compatibility::reverse</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">Compatibility::reverse</span></span>:<br/><a href="2-cmp.html#SP6">§6</a>, <a href="2-cmp.html#SP6_2_1">§6.2.1</a></span></button><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">C</span><span class="plain-syntax">-></span><span class="element-syntax">default_allows</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">C</span><span class="plain-syntax">-></span><span class="element-syntax">default_allows</span><span class="plain-syntax">)?</span><span class="identifier-syntax">FALSE:TRUE</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>...and the other is to add an exception:
|
|
</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">Compatibility::add_exception</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">Compatibility::add_exception</span></span>:<br/><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>, <a href="2-cmp.html#SP10_5">§10.5</a></span></button><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">-></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">-></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>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>§5. Converting to text. </b>This often produces something verbose; the <span class="extract"><span class="extract-syntax">parsed_from</span></span> text probably reads
|
|
better, if available.
|
|
</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">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">-></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">-></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">-></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">-></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"> > </span><span class="constant-syntax">1</span><span class="plain-syntax">) && (</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">", "</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"> > </span><span class="constant-syntax">1</span><span class="plain-syntax">) && (</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#SP5" 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>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP6" class="paragraph-anchor"></a><b>§6. Converting from text. </b>This is quite a tricky little parser, which has to read, for example,
|
|
text like "for Glulx only" used in Inform extension headings. A syntactically
|
|
invalid description returns <span class="extract"><span class="extract-syntax">NULL</span></span> but prints no error message; an empty
|
|
description returns the universally valid specification.
|
|
</p>
|
|
|
|
<p class="commentary">A question we might return to is whether an unrecognisable description —
|
|
say, "for Marzipan version 28.1 only" — should return a universally-false
|
|
specification rather than returning <span class="extract"><span class="extract-syntax">NULL</span></span>: this would enable current Inform
|
|
tools to work with future resources which use VMs currently unthought of.
|
|
But for now, it seems best to generate errors, because the more likely thing
|
|
is that an extension author is botching the wording of something, or
|
|
writing "Z machine" instead of "Z-machine", or something like that.
|
|
</p>
|
|
|
|
<p class="commentary">It might seem better to all of this with a Preform grammar, rather than by
|
|
hand. But we want to make it work in tools which don't have Preform available,
|
|
and we want it to run quickly.
|
|
</p>
|
|
|
|
<p class="commentary">Unless the text is empty, we start with the "works with nothing" specification
|
|
and then add each VM with which <span class="extract"><span class="extract-syntax">C</span></span> does work as an exception.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<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#SP2" class="function-link"><span class="function-syntax">Compatibility::all</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">C</span><span class="plain-syntax">-></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">text</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><a href="2-cmp.html#SP3" class="function-link"><span class="function-syntax">Compatibility::reverse</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">); </span><span class="comment-syntax"> now </span><span class="extract"><span class="extract-syntax">C</span></span><span class="comment-syntax"> works with nothing</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">error_in_syntax</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="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="named-paragraph-container code-font"><a href="2-cmp.html#SP6_1" class="named-paragraph-link"><span class="named-paragraph">Remove excess space and/or enclosing brackets and lower in case</span><span class="named-paragraph-number">6.1</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="2-cmp.html#SP6_2" class="named-paragraph-link"><span class="named-paragraph">Actually parse the description</span><span class="named-paragraph-number">6.2</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">parse</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Regexp::dispose_of</span><span class="plain-syntax">(&</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">error_in_syntax</span><span class="plain-syntax">)?</span><span class="identifier-syntax">NULL:C</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><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Remove excess space and/or enclosing brackets and lower in case</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">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">) && (</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>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-cmp.html#SP6">§6</a>.</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">Actually parse the description</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">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="named-paragraph-container code-font"><a href="2-cmp.html#SP6_2_1" class="named-paragraph-link"><span class="named-paragraph">Parse out the prefix not</span><span class="named-paragraph-number">6.2.1</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="2-cmp.html#SP6_2_2" class="named-paragraph-link"><span class="named-paragraph">Remove the meaningless word for</span><span class="named-paragraph-number">6.2.2</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="2-cmp.html#SP6_2_3" class="named-paragraph-link"><span class="named-paragraph">Parse out the suffix only</span><span class="named-paragraph-number">6.2.3</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">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">error_in_syntax</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">-></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">error_in_syntax</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">-></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#SP8" class="function-link"><span class="function-syntax">Compatibility::parse_specifics</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">error_in_syntax</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-cmp.html#SP6">§6</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP6_2_1" class="paragraph-anchor"></a><b>§6.2.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Parse out the prefix not</span><span class="named-paragraph-number">6.2.1</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">Regexp::match</span><span class="plain-syntax">(&</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><a href="2-cmp.html#SP3" class="function-link"><span class="function-syntax">Compatibility::reverse</span></a><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">negated</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-cmp.html#SP6_2">§6.2</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP6_2_2" class="paragraph-anchor"></a><b>§6.2.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Remove the meaningless word for</span><span class="named-paragraph-number">6.2.2</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Regexp::match</span><span class="plain-syntax">(&</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>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-cmp.html#SP6_2">§6.2</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP6_2_3" class="paragraph-anchor"></a><b>§6.2.3. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Parse out the suffix only</span><span class="named-paragraph-number">6.2.3</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Regexp::match</span><span class="plain-syntax">(&</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">error_in_syntax</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>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-cmp.html#SP6_2">§6.2</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>§7. </b>The above gets us down from, say, "for Glulx only" to just "Glulx", and
|
|
calls the function <a href="2-cmp.html#SP8" class="internal">Compatibility::parse_specifics</a> to handle that specific part —
|
|
though it may be more complicated. See the <a href="../arch-test/index.html" class="internal">arch-test</a> unit test for
|
|
examples. While parsing those specifics we maintain a state in the following
|
|
structure:
|
|
</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">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">compat_parser_state</span><span class="plain-syntax"> </span><span class="function-syntax">Compatibility::initial_state</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">Compatibility::initial_state</span></span>:<br/><a href="2-cmp.html#SP8">§8</a></span></button><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">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">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">cps</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>The structure compat_parser_state is private to this section.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP8" class="paragraph-anchor"></a><b>§8. </b>So here's the specific details parser, then. We return <span class="extract"><span class="extract-syntax">TRUE</span></span> if no syntax
|
|
errors occurred, and we change <span class="extract"><span class="extract-syntax">C</span></span> according to what <span class="extract"><span class="extract-syntax">text</span></span> says.
|
|
</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">Compatibility::parse_specifics</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">Compatibility::parse_specifics</span></span>:<br/><a href="2-cmp.html#SP6_2">§6.2</a></span></button><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">okay</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><a href="2-cmp.html#SP7" class="function-link"><span class="function-syntax">Compatibility::initial_state</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="2-cmp.html#SP8_1" class="named-paragraph-link"><span class="named-paragraph">Reduce the text to a sequence of tokens</span><span class="named-paragraph-number">8.1</span></a></span><span class="plain-syntax">;</span>
|
|
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Regexp::dispose_of</span><span class="plain-syntax">(&</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">okay</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP8_1" class="paragraph-anchor"></a><b>§8.1. </b>This is essentially simple — it splits up text like "Z-machine versions 5 or 8"
|
|
into tokens, sending them one at a time to <a href="2-cmp.html#SP10" class="internal">Compatibility::parse_token</a>.
|
|
Note that commas are converted to the token <span class="extract"><span class="extract-syntax">or</span></span>: e.g., "Z-machine versions 5, 6
|
|
or 8" would be treated as "Z-machine versions 5 or 6 or 8"; and note also that
|
|
"with debugging" and "without debugging" are handled specially.
|
|
</p>
|
|
|
|
<p class="commentary">We end the sequence of tokens with a <span class="extract"><span class="extract-syntax">NULL</span></span>, telling the token-parser that
|
|
it has reached the end.
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Reduce the text to a sequence of tokens</span><span class="named-paragraph-number">8.1</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">while</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Regexp::match</span><span class="plain-syntax">(&</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><a href="2-cmp.html#SP9" class="function-link"><span class="function-syntax">Compatibility::parse_debugging</span></a><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">okay</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">okay</span><span class="plain-syntax"> && </span><a href="2-cmp.html#SP10" class="function-link"><span class="function-syntax">Compatibility::parse_token</span></a><span class="plain-syntax">(&</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">okay</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">okay</span><span class="plain-syntax"> && </span><a href="2-cmp.html#SP10" class="function-link"><span class="function-syntax">Compatibility::parse_token</span></a><span class="plain-syntax">(&</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">) > </span><span class="constant-syntax">0</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">okay</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">okay</span><span class="plain-syntax"> && </span><a href="2-cmp.html#SP10" class="function-link"><span class="function-syntax">Compatibility::parse_token</span></a><span class="plain-syntax">(&</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="identifier-syntax">okay</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">okay</span><span class="plain-syntax"> && </span><a href="2-cmp.html#SP10" class="function-link"><span class="function-syntax">Compatibility::parse_token</span></a><span class="plain-syntax">(&</span><span class="identifier-syntax">cps</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><span class="identifier-syntax">NOT_APPLICABLE</span><span class="plain-syntax">));</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-cmp.html#SP8">§8</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP9" class="paragraph-anchor"></a><b>§9. </b>Returns <span class="extract"><span class="extract-syntax">TRUE</span></span> if the text <span class="extract"><span class="extract-syntax">T</span></span> begins "with debugging", and trims that text
|
|
away from <span class="extract"><span class="extract-syntax">T</span></span>; returns <span class="extract"><span class="extract-syntax">FALSE</span></span> if it begins "without debugging", and similarly
|
|
trims; and otherwise returns <span class="extract"><span class="extract-syntax">NOT_APPLICABLE</span></span> and leaves <span class="extract"><span class="extract-syntax">T</span></span> unaltered.
|
|
</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">Compatibility::parse_debugging</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">Compatibility::parse_debugging</span></span>:<br/><a href="2-cmp.html#SP8_1">§8.1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">T</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">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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Regexp::match</span><span class="plain-syntax">(&</span><span class="identifier-syntax">mr</span><span class="plain-syntax">, </span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="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">T</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">T</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">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">(&</span><span class="identifier-syntax">mr</span><span class="plain-syntax">, </span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="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">T</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">T</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">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">(&</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">with</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. </b>Once again we return <span class="extract"><span class="extract-syntax">TRUE</span></span> if no syntax errors occurred, and we change <span class="extract"><span class="extract-syntax">C</span></span>
|
|
according to what the <span class="extract"><span class="extract-syntax">token</span></span> says.
|
|
</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">Compatibility::parse_token</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">Compatibility::parse_token</span></span>:<br/><a href="2-cmp.html#SP8_1">§8.1</a></span></button><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">token</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">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">token</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-cmp.html#SP10_5" class="named-paragraph-link"><span class="named-paragraph">Construe the token as the end-marker</span><span class="named-paragraph-number">10.5</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">cps</span><span class="plain-syntax">-></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">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">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">-></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">-></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="named-paragraph-container code-font"><a href="2-cmp.html#SP10_1" class="named-paragraph-link"><span class="named-paragraph">Construe token as a version number</span><span class="named-paragraph-number">10.1</span></a></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">token</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">token</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">token</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">-></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">-></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">-></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">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">token</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">token</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"z-machine"</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">token</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">Str::eq_insensitive</span><span class="plain-syntax">(</span><span class="identifier-syntax">token</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"glulx"</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="named-paragraph-container code-font"><a href="2-cmp.html#SP10_2" class="named-paragraph-link"><span class="named-paragraph">Construe token as a bit count</span><span class="named-paragraph-number">10.2</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">with</span><span class="plain-syntax"> != </span><span class="identifier-syntax">NOT_APPLICABLE</span><span class="plain-syntax">) </span><span class="named-paragraph-container code-font"><a href="2-cmp.html#SP10_3" class="named-paragraph-link"><span class="named-paragraph">Construe token as a family name subject to debugging</span><span class="named-paragraph-number">10.3</span></a></span><span class="plain-syntax">;</span>
|
|
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="2-cmp.html#SP10_4" class="named-paragraph-link"><span class="named-paragraph">Construe token as a family name</span><span class="named-paragraph-number">10.4</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP10_1" class="paragraph-anchor"></a><b>§10.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Construe token as a version number</span><span class="named-paragraph-number">10.1</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">cps</span><span class="plain-syntax">-></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><a href="2-tvm.html#SP13" class="function-link"><span class="function-syntax">TargetVMs::compatible_with</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</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="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">-></span><span class="element-syntax">version</span><span class="plain-syntax">, </span><span class="identifier-syntax">V</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> ((</span><span class="identifier-syntax">with</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">with</span><span class="plain-syntax">)))</span>
|
|
<span class="plain-syntax"> </span><a href="2-cmp.html#SP4" class="function-link"><span class="function-syntax">Compatibility::add_exception</span></a><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">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">-></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>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-cmp.html#SP10">§10</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP10_2" class="paragraph-anchor"></a><b>§10.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Construe token as a bit count</span><span class="named-paragraph-number">10.2</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">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#SP9" 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#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">with</span><span class="plain-syntax">))</span>
|
|
<span class="plain-syntax"> </span><a href="2-cmp.html#SP4" class="function-link"><span class="function-syntax">Compatibility::add_exception</span></a><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">VM</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="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">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-cmp.html#SP10">§10</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP10_3" class="paragraph-anchor"></a><b>§10.3. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Construe token as a family name subject to debugging</span><span class="named-paragraph-number">10.3</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">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><a href="2-tvm.html#SP13" class="function-link"><span class="function-syntax">TargetVMs::compatible_with</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">, </span><span class="identifier-syntax">token</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#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">with</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><a href="2-cmp.html#SP4" class="function-link"><span class="function-syntax">Compatibility::add_exception</span></a><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">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">-></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">-></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>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-cmp.html#SP10">§10</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP10_4" class="paragraph-anchor"></a><b>§10.4. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Construe token as a family name</span><span class="named-paragraph-number">10.4</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">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#SP13" class="function-link"><span class="function-syntax">TargetVMs::compatible_with</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</span><span class="plain-syntax">, </span><span class="identifier-syntax">token</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><a href="2-tvm.html#SP13" class="function-link"><span class="function-syntax">TargetVMs::family</span></a><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">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>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-cmp.html#SP10">§10</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP10_5" class="paragraph-anchor"></a><b>§10.5. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Construe the token as the end-marker</span><span class="named-paragraph-number">10.5</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</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="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">) > </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><a href="2-tvm.html#SP13" class="function-link"><span class="function-syntax">TargetVMs::compatible_with</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">VM</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="plain-syntax"> </span><a href="2-cmp.html#SP4" class="function-link"><span class="function-syntax">Compatibility::add_exception</span></a><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">VM</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>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="2-cmp.html#SP10">§10</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP11" class="paragraph-anchor"></a><b>§11. Testing. </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">Compatibility::test</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">-></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">-></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>
|
|
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">Compatibility::test_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">-></span><span class="element-syntax">exceptions</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="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">C</span><span class="plain-syntax">-></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>
|
|
</pre>
|
|
<nav role="progress"><div class="progresscontainer">
|
|
<ul class="progressbar"><li class="progressprev"><a href="2-tvm.html">❮</a></li><li class="progresschapter"><a href="P-wtmd.html">P</a></li><li class="progresschapter"><a href="1-am.html">1</a></li><li class="progresscurrentchapter">2</li><li class="progresssection"><a href="2-arc.html">arc</a></li><li class="progresssection"><a href="2-tvm.html">tvm</a></li><li class="progresscurrent">cmp</li><li class="progressnextoff">❯</li></ul></div>
|
|
</nav><!--End of weave-->
|
|
|
|
</main>
|
|
</body>
|
|
</html>
|
|
|