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117 lines
7.5 KiB
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<title>What This Module Does</title>
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<link href="../docs-assets/Breadcrumbs.css" rel="stylesheet" rev="stylesheet" type="text/css">
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<meta name="viewport" content="width=device-width initial-scale=1">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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</head>
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<body class="commentary-font">
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<nav role="navigation">
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<h1><a href="../index.html">
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<img src="../docs-assets/Inform.png" height=72">
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</a></h1>
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<ul><li><a href="../compiler.html">compiler tools</a></li>
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<li><a href="../other.html">other tools</a></li>
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<li><a href="../extensions.html">extensions and kits</a></li>
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<li><a href="../units.html">unit test tools</a></li>
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</ul><h2>Compiler Webs</h2><ul>
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<li><a href="../inbuild/index.html">inbuild</a></li>
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<li><a href="../inform7/index.html">inform7</a></li>
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<li><a href="../inter/index.html">inter</a></li>
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</ul><h2>Inbuild Modules</h2><ul>
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<li><a href="../supervisor-module/index.html">supervisor</a></li>
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</ul><h2>Inform7 Modules</h2><ul>
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<li><a href="../core-module/index.html">core</a></li>
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<li><a href="../assertions-module/index.html">assertions</a></li>
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<li><a href="../values-module/index.html">values</a></li>
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<li><a href="../knowledge-module/index.html">knowledge</a></li>
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<li><a href="../imperative-module/index.html">imperative</a></li>
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<li><a href="../runtime-module/index.html">runtime</a></li>
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<li><a href="index.html"><span class="selectedlink">if</span></a></li>
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<li><a href="../multimedia-module/index.html">multimedia</a></li>
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<li><a href="../index-module/index.html">index</a></li>
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</ul><h2>Inter Modules</h2><ul>
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<li><a href="../bytecode-module/index.html">bytecode</a></li>
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<li><a href="../building-module/index.html">building</a></li>
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<li><a href="../codegen-module/index.html">codegen</a></li>
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</ul><h2>Services</h2><ul>
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<li><a href="../arch-module/index.html">arch</a></li>
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<li><a href="../calculus-module/index.html">calculus</a></li>
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<li><a href="../html-module/index.html">html</a></li>
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<li><a href="../inflections-module/index.html">inflections</a></li>
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<li><a href="../kinds-module/index.html">kinds</a></li>
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<li><a href="../linguistics-module/index.html">linguistics</a></li>
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<li><a href="../problems-module/index.html">problems</a></li>
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<li><a href="../syntax-module/index.html">syntax</a></li>
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<li><a href="../words-module/index.html">words</a></li>
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<li><a href="../../../inweb/docs/foundation-module/index.html">foundation</a></li>
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</ul>
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</nav>
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<main role="main">
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<!--Weave of 'What This Module Does' generated by Inweb-->
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<div class="breadcrumbs">
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<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../compiler.html">Inform7</a></li><li><a href="index.html">if</a></li><li><a href="index.html#P">Preliminaries</a></li><li><b>What This Module Does</b></li></ul></div>
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<p class="purpose">An overview of the if module's role and abilities.</p>
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<ul class="toc"><li><a href="P-wtmd.html#SP1">§1. Prerequisites</a></li><li><a href="P-wtmd.html#SP2">§2. So many plugins</a></li></ul><hr class="tocbar">
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. Prerequisites. </b>The if module is a part of the Inform compiler toolset. It is presented as a
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literate program or "web". Before diving in:
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</p>
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<ul class="items"><li>(a) It helps to have some experience of reading webs: see <a href="../../../inweb/docs/index.html" class="internal">inweb</a> for more.
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</li><li>(b) The module is written in C, in fact ANSI C99, but this is disguised by the
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fact that it uses some extension syntaxes provided by the <a href="../../../inweb/docs/index.html" class="internal">inweb</a> literate
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programming tool, making it a dialect of C called InC. See <a href="../../../inweb/docs/index.html" class="internal">inweb</a> for
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full details, but essentially: it's C without predeclarations or header files,
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and where functions have names like <span class="extract"><span class="extract-syntax">Tags::add_by_name</span></span> rather than just <span class="extract"><span class="extract-syntax">add_by_name</span></span>.
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</li><li>(c) This module uses other modules drawn from the <a href="../compiler.html" class="internal">compiler</a>, and also
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uses a module of utility functions called <a href="../../../inweb/docs/foundation-module/index.html" class="internal">foundation</a>.
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For more, see <a href="../../../inweb/docs/foundation-module/P-abgtf.html" class="internal">A Brief Guide to Foundation (in foundation)</a>.
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</li></ul>
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<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. So many plugins. </b>This module consists entirely of plugins, and when they are all inactive,
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as for example with a Basic Inform project, it's as if the module does not exist
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at all: it does nothing.
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</p>
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<p class="commentary">The module is divided into four substantive parts, which form Chapters 2 to 5,
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and are largely independent of each other:
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</p>
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<ul class="items"><li>● <a href="2-bd.html" class="internal">Chapter 2: Bibliographic Data</a> is a single plugin, "bibliographic data".
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This manages metadata on projects, notably the Interactive Fiction ID, and
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follows a number of Internet standards for such things. <a href="2-ri.html" class="internal">Release Instructions</a>
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collates release details included in the source text, and acts as a bridge to
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the releasing agent <a href="../inblorb/index.html" class="internal">inblorb</a>.
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</li><li>● <a href="3-sm.html" class="internal">Chapter 3: Space and Time</a>, by contrast, is made up of many individual
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plugins, which can independently be active or not: collectively they form the
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usual model world for interactive fiction, but it's possible, for example,
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to remove the concept of a geographical map, or of scenes, and still have
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the rest.
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</li><li>● <a href="4-ap.html" class="internal">Chapter 4: Actions</a> is the single plugin "actions", which provides a
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framework for how agents in the world model can perform simple tasks such as
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picking things up, or going from place to place.
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</li><li>● <a href="5-pp.html" class="internal">Chapter 5: Command Parser</a> is the single plugin "parsing", and
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provides for command parsing. Projects using other mechanisms for having
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the reader interact with them do not need this, and can deactivate the plugin.
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</li></ul>
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<nav role="progress"><div class="progresscontainer">
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<ul class="progressbar"><li class="progressprevoff">❮</li><li class="progresscurrentchapter">P</li><li class="progresscurrent">wtmd</li><li class="progresschapter"><a href="1-im.html">1</a></li><li class="progresschapter"><a href="2-bd.html">2</a></li><li class="progresschapter"><a href="3-sm.html">3</a></li><li class="progresschapter"><a href="4-ap.html">4</a></li><li class="progresschapter"><a href="5-pp.html">5</a></li><li class="progressnext"><a href="1-im.html">❯</a></li></ul></div>
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</nav><!--End of weave-->
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</main>
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</body>
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</html>
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