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<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../compiler.html">Inform7</a></li><li><b>imperative</b></li></ul>
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<p class="purpose">Compiling imperative code inside phrase or rule definitions. This is version 1.</p>
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<hr>
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<div class="contentspage">
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<ul class="chapterlist">
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<li>
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<p class="chapterentry"><a name="P"></a>
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<span class="chaptertitle">Preliminaries</span></p>
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<ul class="sectionlist">
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<li>
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<p class="sectionentry"><a href="P-wtmd.html">
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<spon class="sectiontitle">What This Module Does</span></a> -
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<span class="sectionpurpose">An overview of the imperative module's role and abilities.</span></p>
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</li>
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</ul>
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</li>
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<li>
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<p class="chapterentry"><a name="1"></a>
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<span class="chaptertitle">Chapter 1: Configuration and Control</span></p>
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<ul class="sectionlist">
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<li>
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<p class="sectionentry"><a href="1-im.html">
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<spon class="sectiontitle">Imperative Module</span></a> -
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<span class="sectionpurpose">Setting up the use of this module.</span></p>
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</li>
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</ul>
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</li>
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<li>
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<p class="chapterentry"><a name="2"></a>
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<span class="chaptertitle">Chapter 2: Compilation Context</span></p>
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<p class="chapterpurpose">Preparing a context at run-time in which code can be executed.</p>
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<ul class="sectionlist">
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<li>
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<p class="sectionentry"><a href="2-lv.html">
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<spon class="sectiontitle">Local Variables</span></a> -
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<span class="sectionpurpose">Local variables are used for call parameters, temporary values, and other ephemeral workspace.</span></p>
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</li>
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<li>
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<p class="sectionentry"><a href="2-sv.html">
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<spon class="sectiontitle">Shared Variables</span></a> -
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<span class="sectionpurpose">Shared variables are held in common by all rules in a given rulebook.</span></p>
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</li>
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<li>
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<p class="sectionentry"><a href="2-pb.html">
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<spon class="sectiontitle">Phrase Blocks</span></a> -
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<span class="sectionpurpose">Blocks of code are used to give conditionals and loops greater scope, as in more traditional programming languages.</span></p>
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</li>
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<li>
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<p class="sectionentry"><a href="2-sf.html">
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<spon class="sectiontitle">Stack Frames</span></a> -
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<span class="sectionpurpose">When Inform compiles imperative code, it does so in the context of a "stack frame".</span></p>
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</li>
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<li>
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<p class="sectionentry"><a href="2-chr.html">
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<spon class="sectiontitle">Chronology</span></a> -
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<span class="sectionpurpose">To keep track of the state of things so that it will be possible in future to ask questions concerning the past.</span></p>
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</li>
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</ul>
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</li>
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<li>
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<p class="chapterentry"><a name="3"></a>
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<span class="chaptertitle">Chapter 3: Compiling Propositions</span></p>
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<p class="chapterpurpose">Generating code to test or assert propositions from predicate calculus.</p>
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<ul class="sectionlist">
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<li>
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<p class="sectionentry"><a href="3-cfs.html">
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<spon class="sectiontitle">Compiling from Specifications</span></a> -
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<span class="sectionpurpose">To compile specifications into Inform 6 values, conditions or void expressions.</span></p>
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</li>
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<li>
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<p class="sectionentry"><a href="3-efs.html">
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<spon class="sectiontitle">Emitting from Schemas</span></a> -
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<span class="sectionpurpose">Here we emit code from an I6 schema.</span></p>
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</li>
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<li>
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<p class="sectionentry"><a href="3-ca.html">
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<spon class="sectiontitle">Compile Atoms</span></a> -
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<span class="sectionpurpose">In this section, given an atom of a proposition we compile I6 code as required for any of three possible outcomes: (i) to test whether it is true, (ii) to make it henceforth true, or (iii) to make it henceforth false.</span></p>
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</li>
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<li>
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<p class="sectionentry"><a href="3-dtd.html">
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<spon class="sectiontitle">Deciding to Defer</span></a> -
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<span class="sectionpurpose">To decide whether a proposition can be compiled immediately, in the body of the current routine, or whether it must be deferred to a routine of its own, which is called from the current routine.</span></p>
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</li>
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<li>
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<p class="sectionentry"><a href="3-cad.html">
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<spon class="sectiontitle">Cinders and Deferrals</span></a> -
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<span class="sectionpurpose">To compile terms, having carefully preserved any constants which might have been lost in the process of deferring a proposition (such tricky constants being called "cinders").</span></p>
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</li>
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<li>
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<p class="sectionentry"><a href="3-cdp.html">
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<spon class="sectiontitle">Compile Deferred Propositions</span></a> -
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<span class="sectionpurpose">To compile the I6 routines needed to perform the tests or tasks deferred as being too difficult in their original contexts.</span></p>
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</li>
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</ul>
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</li>
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<li>
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<p class="chapterentry"><a name="4"></a>
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<span class="chaptertitle">Chapter 4: Compiling Invocations</span></p>
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<p class="chapterpurpose">Generating code to perform individual phrases.</p>
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<ul class="sectionlist">
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<li>
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<p class="sectionentry"><a href="4-inv.html">
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<spon class="sectiontitle">Invocations</span></a> -
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<span class="sectionpurpose">Specifications which ask to use a phrase (which are "phrasal") indicate which phrase they intend by means of a list of "invocations". This list goes on to record the outcome of type-checking and provides instructions for code generation, as we see here.</span></p>
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</li>
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<li>
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<p class="sectionentry"><a href="4-pi.html">
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<spon class="sectiontitle">Parse Invocations</span></a> -
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<span class="sectionpurpose">To register phrases with the excerpt parser, and to provide the excerpt parser with help in putting invocations together.</span></p>
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</li>
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<li>
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<p class="sectionentry"><a href="4-ci.html">
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<spon class="sectiontitle">Compile Invocations</span></a> -
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<span class="sectionpurpose">Here we generate Inform 6 code to execute the phrase(s) called for by an invocation list.</span></p>
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</li>
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<li>
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<p class="sectionentry"><a href="4-ciac.html">
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<spon class="sectiontitle">Compile Invocations As Calls</span></a> -
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<span class="sectionpurpose">Here we generate Inform 6 code to execute the phrase(s) called for by an invocation list.</span></p>
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</li>
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<li>
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<p class="sectionentry"><a href="4-cii.html">
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<spon class="sectiontitle">Compile Invocations Inline</span></a> -
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<span class="sectionpurpose">Here we generate Inform 6 code to execute the phrase(s) called for by an invocation list.</span></p>
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</li>
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<li>
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<p class="sectionentry"><a href="4-cp.html">
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<spon class="sectiontitle">Compile Phrases</span></a> -
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<span class="sectionpurpose">Phrases defined with a list of invocations, rather than inline, have to be compiled to I6 routines, and this is where we organise that.</span></p>
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</li>
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<li>
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<p class="sectionentry"><a href="4-ca.html">
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<spon class="sectiontitle">Compile Arithmetic</span></a> -
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<span class="sectionpurpose">To compile code performing an arithmetic operation.</span></p>
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</li>
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<li>
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<p class="sectionentry"><a href="4-cste.html">
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<spon class="sectiontitle">Compile Solutions to Equations</span></a> -
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<span class="sectionpurpose">To compile code to solve an equation involving numerical quantities.</span></p>
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</li>
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</ul>
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</li>
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</ul>
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</div>
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<hr>
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<p class="purpose">Powered by <a href="https://github.com/ganelson/inweb">Inweb</a>.</p>
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