mirror of
https://github.com/ganelson/inform.git
synced 2024-07-18 06:54:26 +03:00
144 lines
16 KiB
HTML
144 lines
16 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<head>
|
|
<title>The Inter Version</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="../index.html">home</a></li>
|
|
</ul><h2>Compiler</h2><ul>
|
|
<li><a href="../structure.html">structure</a></li>
|
|
<li><a href="../inbuildn.html">inbuild</a></li>
|
|
<li><a href="../inform7n.html">inform7</a></li>
|
|
<li><a href="../intern.html">inter</a></li>
|
|
<li><a href="../services.html">services</a></li>
|
|
</ul><h2>Other Tools</h2><ul>
|
|
<li><a href="../inblorbn.html">inblorb</a></li>
|
|
<li><a href="../indocn.html">indoc</a></li>
|
|
<li><a href="../inform6.html">inform6</a></li>
|
|
<li><a href="../inpolicyn.html">inpolicy</a></li>
|
|
<li><a href="../inrtpsn.html">inrtps</a></li>
|
|
<li><a href="../extensions.html">extensions and kits</a></li>
|
|
</ul><h2>Repository</h2><ul>
|
|
<li><a href="https://github.com/ganelson/inform"><img src="../docs-assets/github.png" height=18> github</a></li>
|
|
</ul><h2>Related Projects</h2><ul>
|
|
<li><a href="../../../inweb/docs/index.html">inweb</a></li>
|
|
<li><a href="../../../intest/docs/index.html">intest</a></li>
|
|
|
|
</ul>
|
|
</nav>
|
|
<main role="main">
|
|
<!--Weave of 'The Inter Version' generated by Inweb-->
|
|
<div class="breadcrumbs">
|
|
<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../intern.html">Inter Modules</a></li><li><a href="index.html">bytecode</a></li><li><a href="index.html#1">Chapter 1: Setting Up</a></li><li><b>The Inter Version</b></li></ul></div>
|
|
<p class="purpose">The semantic version number for the current definition of Inter bytecode.</p>
|
|
|
|
<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. </b>We can expect the details of the Inter language to change. Such changes
|
|
could easily render text or binary files of Inter code useless; so we will
|
|
want to use semantic versioning to compare the language as we understand it
|
|
(the "current version") with the language as it was understood by whoever
|
|
wrote the Inter file we are loading (the "file version").
|
|
</p>
|
|
|
|
<p class="commentary">If we consider the version as having the traditional form <span class="extract"><span class="extract-syntax">major.minor.patch</span></span>,
|
|
the <span class="extract"><span class="extract-syntax">major</span></span> version should change on any of the following:
|
|
</p>
|
|
|
|
<ul class="items"><li>(a) Removal of an Inter construct, or any renumbering of <span class="extract"><span class="extract-syntax">*_IST</span></span> constants.
|
|
</li><li>(b) Change of bytecode representation of an instruction.
|
|
</li><li>(c) Change of the binary file format in <a href="3-iibf.html" class="internal">Inter in Binary Files</a>. Note that
|
|
changing some of the defined constants in this module could have the same effect,
|
|
since these constants are used as distinguishing values in binary Inter files.
|
|
</li><li>(d) Change of the textual file format in <a href="3-iitf.html" class="internal">Inter in Text Files</a> and elsewhere
|
|
in the <span class="extract"><span class="extract-syntax">CONSTRUCT_READ_MTID</span></span> methods for the constructs.
|
|
</li><li>(e) Removal of one of the standard annotations, or any renumbering of existing
|
|
ones. See <a href="2-ann.html" class="internal">Annotations</a>.
|
|
</li><li>(f) Removal of one of the standard primitives, or any renumbering of existing
|
|
ones. See <a href="../building-module/1-ip.html" class="internal">Inter Primitives (in building)</a>.
|
|
</li></ul>
|
|
<p class="commentary">This may result in ungainly, high <span class="extract"><span class="extract-syntax">major</span></span> version numbers: so be it. However,
|
|
the following need only mean a bump of the <span class="extract"><span class="extract-syntax">minor</span></span> version —
|
|
</p>
|
|
|
|
<ul class="items"><li>(a) Addition of a new Inter construct, provided the existing ones are not
|
|
renumbered.
|
|
</li><li>(b) Addition of a new Inter annotation, provided the existing ones are not
|
|
renumbered.
|
|
</li><li>(c) Addition of a new Inter primitive, provided the existing ones are not
|
|
renumbered.
|
|
</li></ul>
|
|
<p class="commentary">The <span class="extract"><span class="extract-syntax">patch</span></span> version number should always remain 0 — this is not a version for
|
|
the implementation of anything, just for the specification itself, so in some
|
|
sense it cannot be bug-fixed, only changed.
|
|
</p>
|
|
|
|
<p class="commentary">Modifiers of the <span class="extract"><span class="extract-syntax">+</span></span> and <span class="extract"><span class="extract-syntax">-</span></span> sort are also best avoided here, so we will deal only
|
|
with SVNs in the traditional <span class="extract"><span class="extract-syntax">x.y.z</span></span> format.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">semantic_version_number</span><span class="plain-syntax"> </span><span class="function-syntax">InterVersion::current</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">InterVersion::current</span></span>:<br/><a href="1-tiv.html#SP2">§2</a><br/>Inter in Binary Files - <a href="3-iibf.html#SP9_1_1">§9.1.1</a><br/>The Version Construct - <a href="6-tvc.html#SP2">§2</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="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">I</span><span class="string-syntax">"1.0.0"</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">VersionNumbers::is_null</span><span class="plain-syntax">(</span><span class="identifier-syntax">V</span><span class="plain-syntax">)) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"malformed version number"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">V</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">InterVersion::check_readable</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">InterVersion::check_readable</span></span>:<br/>Inter in Binary Files - <a href="3-iibf.html#SP9_1_1">§9.1.1</a><br/>The Version Construct - <a href="6-tvc.html#SP2">§2</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">semantic_version_number</span><span class="plain-syntax"> </span><span class="identifier-syntax">file_version</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">VersionNumberRanges::in_range</span><span class="plain-syntax">(</span>
|
|
<span class="plain-syntax"> </span><a href="1-tiv.html#SP1" class="function-link"><span class="function-syntax">InterVersion::current</span></a><span class="plain-syntax">(),</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">VersionNumberRanges::compatibility_range</span><span class="plain-syntax">(</span><span class="identifier-syntax">file_version</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. </b>When Inter is stored in binary format, the version number is stored in three
|
|
consecutive unsigned integers in the file header: see <a href="3-iibf.html" class="internal">Inter in Binary Files</a>.
|
|
</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">InterVersion::to_three_words</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">InterVersion::to_three_words</span></span>:<br/>Inter in Binary Files - <a href="3-iibf.html#SP9_2_1">§9.2.1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">unsigned</span><span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> *</span><span class="identifier-syntax">w1</span><span class="plain-syntax">, </span><span class="reserved-syntax">unsigned</span><span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> *</span><span class="identifier-syntax">w2</span><span class="plain-syntax">, </span><span class="reserved-syntax">unsigned</span><span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> *</span><span class="identifier-syntax">w3</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">semantic_version_number</span><span class="plain-syntax"> </span><span class="identifier-syntax">V</span><span class="plain-syntax"> = </span><a href="1-tiv.html#SP1" class="function-link"><span class="function-syntax">InterVersion::current</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> *</span><span class="identifier-syntax">w1</span><span class="plain-syntax"> = (</span><span class="reserved-syntax">unsigned</span><span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax">) </span><span class="identifier-syntax">V</span><span class="plain-syntax">.</span><span class="identifier-syntax">version_numbers</span><span class="plain-syntax">[0];</span>
|
|
<span class="plain-syntax"> *</span><span class="identifier-syntax">w2</span><span class="plain-syntax"> = (</span><span class="reserved-syntax">unsigned</span><span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax">) </span><span class="identifier-syntax">V</span><span class="plain-syntax">.</span><span class="identifier-syntax">version_numbers</span><span class="plain-syntax">[1];</span>
|
|
<span class="plain-syntax"> *</span><span class="identifier-syntax">w3</span><span class="plain-syntax"> = (</span><span class="reserved-syntax">unsigned</span><span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax">) </span><span class="identifier-syntax">V</span><span class="plain-syntax">.</span><span class="identifier-syntax">version_numbers</span><span class="plain-syntax">[2];</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="identifier-syntax">semantic_version_number</span><span class="plain-syntax"> </span><span class="function-syntax">InterVersion::from_three_words</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">InterVersion::from_three_words</span></span>:<br/>Inter in Binary Files - <a href="3-iibf.html#SP9_1_1">§9.1.1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">unsigned</span><span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">w1</span><span class="plain-syntax">, </span><span class="reserved-syntax">unsigned</span><span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">w2</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">unsigned</span><span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">w3</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">textual</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">textual</span><span class="plain-syntax">, </span><span class="string-syntax">"%d.%d.%d"</span><span class="plain-syntax">, </span><span class="identifier-syntax">w1</span><span class="plain-syntax">, </span><span class="identifier-syntax">w2</span><span class="plain-syntax">, </span><span class="identifier-syntax">w3</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">textual</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">textual</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">V</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<nav role="progress"><div class="progresscontainer">
|
|
<ul class="progressbar"><li class="progressprev"><a href="1-bm.html">❮</a></li><li class="progresschapter"><a href="P-wtmd.html">P</a></li><li class="progresscurrentchapter">1</li><li class="progresssection"><a href="1-bm.html">bm</a></li><li class="progresscurrent">tiv</li><li class="progresschapter"><a href="2-it.html">2</a></li><li class="progresschapter"><a href="3-ic.html">3</a></li><li class="progresschapter"><a href="4-tcc.html">4</a></li><li class="progresschapter"><a href="5-tac.html">5</a></li><li class="progresschapter"><a href="6-tpc.html">6</a></li><li class="progressnext"><a href="2-it.html">❯</a></li></ul></div>
|
|
</nav><!--End of weave-->
|
|
|
|
</main>
|
|
</body>
|
|
</html>
|
|
|