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<!--Weave of 'Imperative Definitions' 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">assertions</a></li><li><a href="index.html#5">Chapter 5: Imperative Code</a></li><li><b>Imperative Definitions</b></li></ul></div>
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<p class="purpose">Each IMPERATIVE node in the syntax tree makes a definition using imperative code.</p>
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. </b>Inform has several features — most obviously rules and "To ..." phrases —
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where something is created with top-level syntax with a shape like so:
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="identifier-syntax">Some</span><span class="plain-syntax"> </span><span class="identifier-syntax">preamble</span><span class="plain-syntax"> </span><span class="identifier-syntax">text</span><span class="plain-syntax"> </span><span class="identifier-syntax">ending</span><span class="plain-syntax"> </span><span class="identifier-syntax">in</span><span class="plain-syntax"> </span><span class="identifier-syntax">a</span><span class="plain-syntax"> </span><span class="identifier-syntax">colon</span><span class="plain-syntax">:</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">a</span><span class="plain-syntax"> </span><span class="identifier-syntax">body</span><span class="plain-syntax"> </span><span class="identifier-syntax">of</span><span class="plain-syntax"> </span><span class="identifier-syntax">instructions</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">like</span><span class="plain-syntax"> </span><span class="identifier-syntax">so</span><span class="plain-syntax">;</span>
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</pre>
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<p class="commentary">These are called "imperative definitions", and each one in the source text
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is given its own <a href="5-id.html#SP1" class="internal">imperative_defn</a>: see <a href="5-id.html#SP2" class="internal">ImperativeDefinitions::new</a> below.
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</p>
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<p class="commentary">The body has to be a standard chunk of Inform 7 code, which, roughly speaking,
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is in the same format whatever is being defined here. This in due course becomes
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its <span class="extract"><span class="extract-syntax">body_of_defn</span></span>. But the preamble text can be very varied, and no syntactic
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marker tells us directly what sort of language feature is being defined.
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</p>
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<p class="commentary">To deal with this, each such language feature has its own <a href="5-idf.html#SP2" class="internal">imperative_defn_family</a>;
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and every <a href="5-id.html#SP1" class="internal">imperative_defn</a> belongs to just one family. So, for example, a
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definition makes a "To..." phrase if its family is the one looked after by
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<a href="5-tpf.html" class="internal">To Phrase Family</a>.
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<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">imperative_defn</span><span class="plain-syntax"> {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">imperative_defn_family</span><span class="plain-syntax"> *</span><span class="identifier-syntax">family</span><span class="plain-syntax">; </span><span class="comment-syntax"> what manner of thing is defined</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">general_pointer</span><span class="plain-syntax"> </span><span class="identifier-syntax">family_specific_data</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">at</span><span class="plain-syntax">; </span><span class="comment-syntax"> where this occurs in the syntax tree</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">phrase</span><span class="plain-syntax"> *</span><span class="identifier-syntax">body_of_defn</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">log_text</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">CLASS_DEFINITION</span>
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<span class="plain-syntax">} </span><span class="reserved-syntax">imperative_defn</span><span class="plain-syntax">;</span>
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</pre>
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<ul class="endnotetexts"><li>The structure imperative_defn is accessed in 5/idf, 5/adf, 5/tpf, 5/rf, 7/tap, 7/tcp, 7/aa, 7/am and here.</li></ul>
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<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. </b>This creator function is called on each <span class="extract"><span class="extract-syntax">IMPERATIVE_NT</span></span> node in the syntax
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tree, which is to say, at each place where the punctuation looks like the
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shape shown above.
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</p>
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<p class="commentary">At this point, <span class="extract"><span class="extract-syntax">p</span></span> has a number of <span class="extract"><span class="extract-syntax">INVOCATION_LIST_NT</span></span> nodes hanging from it,
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and those have been checked through for any early signs of trouble (see <a href="2-is.html" class="internal">Imperative Subtrees</a>).
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But nobody has looked at the preamble text at all, and our first task is to
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find out which family the definition belongs to, on the basis of that text.
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">imperative_defn</span><span class="plain-syntax"> *</span><span class="function-syntax">ImperativeDefinitions::new</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">ImperativeDefinitions::new</span></span>:<br/>Imperative Subtrees - <a href="2-is.html#SP1">§1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">p</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">imperative_defn</span><span class="plain-syntax"> *</span><span class="identifier-syntax">id</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">imperative_defn</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">at</span><span class="plain-syntax"> = </span><span class="identifier-syntax">p</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">body_of_defn</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">family</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">family_specific_data</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL_GENERAL_POINTER</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">log_text</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Node::get_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">p</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax"> = </span><span class="identifier-syntax">p</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><a href="5-idf.html#SP3" class="function-link"><span class="function-syntax">ImperativeDefinitionFamilies::identify</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">id</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">id</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>§3. </b>In our compiled code, it's useful to label functions with Inter comments:
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">ImperativeDefinitions::write_comment_describing</span><span class="plain-syntax">(</span><span class="reserved-syntax">imperative_defn</span><span class="plain-syntax"> *</span><span class="identifier-syntax">id</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">, </span><span class="string-syntax">"%~W:"</span><span class="plain-syntax">, </span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">log_text</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::comment</span><span class="plain-syntax">(</span><span class="identifier-syntax">Emit::tree</span><span class="plain-syntax">(), </span><span class="identifier-syntax">C</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">)</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP4" class="paragraph-anchor"></a><b>§4. </b>And similarly:
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">ImperativeDefinitions::index_preamble</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="reserved-syntax">imperative_defn</span><span class="plain-syntax"> *</span><span class="identifier-syntax">id</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"%+W"</span><span class="plain-syntax">, </span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">log_text</span><span class="plain-syntax">);</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>§5. </b>IDs are happened early on in Inform's run, at a time when many nouns have
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not been created, so no very detailed parsing of the preamble is possible.
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This second stage, called "assessment", takes place later and makes a more
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detailed look possible.
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">ImperativeDefinitions::assess_all</span><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">initial_problem_count</span><span class="plain-syntax"> = </span><span class="identifier-syntax">problem_count</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="5-id.html#SP5_1" class="named-paragraph-link"><span class="named-paragraph">Step 1 - Assess</span><span class="named-paragraph-number">5.1</span></a></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="5-id.html#SP5_2" class="named-paragraph-link"><span class="named-paragraph">Step 2 - Register</span><span class="named-paragraph-number">5.2</span></a></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="5-id.html#SP5_3" class="named-paragraph-link"><span class="named-paragraph">Step 3 - Make the runtime context data</span><span class="named-paragraph-number">5.3</span></a></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="5-id.html#SP5_4" class="named-paragraph-link"><span class="named-paragraph">Step 4 - Complete</span><span class="named-paragraph-number">5.4</span></a></span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP5_1" class="paragraph-anchor"></a><b>§5.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Step 1 - Assess</span><span class="named-paragraph-number">5.1</span></span><span class="comment-syntax"> =</span>
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">total</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NUMBER_CREATED</span><span class="plain-syntax">(</span><span class="reserved-syntax">imperative_defn</span><span class="plain-syntax">), </span><span class="identifier-syntax">created</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">imperative_defn</span><span class="plain-syntax"> *</span><span class="identifier-syntax">id</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER</span><span class="plain-syntax">(</span><span class="identifier-syntax">id</span><span class="plain-syntax">, </span><span class="reserved-syntax">imperative_defn</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">created</span><span class="plain-syntax">++;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">created</span><span class="plain-syntax"> % </span><span class="constant-syntax">10</span><span class="plain-syntax">) == </span><span class="constant-syntax">0</span><span class="plain-syntax">)</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">ProgressBar::update</span><span class="plain-syntax">(3,</span>
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<span class="plain-syntax"> ((</span><span class="reserved-syntax">float</span><span class="plain-syntax">) (</span><span class="identifier-syntax">created</span><span class="plain-syntax">))/((</span><span class="reserved-syntax">float</span><span class="plain-syntax">) (</span><span class="identifier-syntax">total</span><span class="plain-syntax">)));</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax"> = </span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">at</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><a href="5-idf.html#SP4" class="function-link"><span class="function-syntax">ImperativeDefinitionFamilies::assess</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">id</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">Node::is</span><span class="plain-syntax">(</span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">at</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">, </span><span class="identifier-syntax">DEFN_CONT_NT</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">at</span><span class="plain-syntax">-></span><span class="identifier-syntax">down</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) &&</span>
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<span class="plain-syntax"> (</span><a href="5-idf.html#SP11" class="function-link"><span class="function-syntax">ImperativeDefinitionFamilies::allows_empty</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">id</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::sentence_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">Task::syntax_tree</span><span class="plain-syntax">(), </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_Undefined</span><span class="plain-syntax">),</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"there doesn't seem to be any definition here"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"so I can't see what this rule or phrase would do."</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">phrase</span><span class="plain-syntax"> *</span><span class="identifier-syntax">body</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Phrases::create_from_preamble</span><span class="plain-syntax">(</span><span class="identifier-syntax">id</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">body_of_defn</span><span class="plain-syntax"> = </span><span class="identifier-syntax">body</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><a href="5-idf.html#SP7" class="function-link"><span class="function-syntax">ImperativeDefinitionFamilies::given_body</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">id</span><span class="plain-syntax">, </span><span class="identifier-syntax">body</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">initial_problem_count</span><span class="plain-syntax"> < </span><span class="identifier-syntax">problem_count</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="5-id.html#SP5">§5</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_2" class="paragraph-anchor"></a><b>§5.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Step 2 - Register</span><span class="named-paragraph-number">5.2</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">imperative_defn_family</span><span class="plain-syntax"> *</span><span class="identifier-syntax">idf</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">idf</span><span class="plain-syntax">, </span><span class="reserved-syntax">imperative_defn_family</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="5-idf.html#SP5" class="function-link"><span class="function-syntax">ImperativeDefinitionFamilies::register</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">idf</span><span class="plain-syntax">, </span><span class="identifier-syntax">initial_problem_count</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">initial_problem_count</span><span class="plain-syntax"> < </span><span class="identifier-syntax">problem_count</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="5-id.html#SP5">§5</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_3" class="paragraph-anchor"></a><b>§5.3. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Step 3 - Make the runtime context data</span><span class="named-paragraph-number">5.3</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">imperative_defn</span><span class="plain-syntax"> *</span><span class="identifier-syntax">id</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">id</span><span class="plain-syntax">, </span><span class="reserved-syntax">imperative_defn</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">id</span><span class="plain-syntax">-></span><span class="element-syntax">body_of_defn</span><span class="plain-syntax">-></span><span class="identifier-syntax">runtime_context_data</span><span class="plain-syntax"> =</span>
|
|
<span class="plain-syntax"> </span><a href="5-idf.html#SP8" class="function-link"><span class="function-syntax">ImperativeDefinitionFamilies::to_phrcd</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">id</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">initial_problem_count</span><span class="plain-syntax"> < </span><span class="identifier-syntax">problem_count</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="5-id.html#SP5">§5</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP5_4" class="paragraph-anchor"></a><b>§5.4. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Step 4 - Complete</span><span class="named-paragraph-number">5.4</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">imperative_defn_family</span><span class="plain-syntax"> *</span><span class="identifier-syntax">idf</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">idf</span><span class="plain-syntax">, </span><span class="reserved-syntax">imperative_defn_family</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="5-idf.html#SP6" class="function-link"><span class="function-syntax">ImperativeDefinitionFamilies::assessment_complete</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">idf</span><span class="plain-syntax">, </span><span class="identifier-syntax">initial_problem_count</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">initial_problem_count</span><span class="plain-syntax"> < </span><span class="identifier-syntax">problem_count</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="5-id.html#SP5">§5</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP6" class="paragraph-anchor"></a><b>§6. </b>Whatever is defined probably wants to compile the body of the definition
|
|
into at least one (and perhaps more than one) Inter function. This is handled
|
|
in two stages. Stage one:
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">total_phrases_to_compile</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">total_phrases_compiled</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">ImperativeDefinitions::compile_first_block</span><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="5-id.html#SP6_1" class="named-paragraph-link"><span class="named-paragraph">Count up the scale of the task</span><span class="named-paragraph-number">6.1</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">imperative_defn_family</span><span class="plain-syntax"> *</span><span class="identifier-syntax">idf</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">idf</span><span class="plain-syntax">, </span><span class="reserved-syntax">imperative_defn_family</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">idf</span><span class="plain-syntax">-></span><span class="element-syntax">compile_last</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><a href="5-idf.html#SP13" class="function-link"><span class="function-syntax">ImperativeDefinitionFamilies::compile</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">idf</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> &</span><span class="identifier-syntax">total_phrases_compiled</span><span class="plain-syntax">, </span><span class="identifier-syntax">total_phrases_to_compile</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">idf</span><span class="plain-syntax">, </span><span class="reserved-syntax">imperative_defn_family</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">idf</span><span class="plain-syntax">-></span><span class="element-syntax">compile_last</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><a href="5-idf.html#SP13" class="function-link"><span class="function-syntax">ImperativeDefinitionFamilies::compile</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">idf</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> &</span><span class="identifier-syntax">total_phrases_compiled</span><span class="plain-syntax">, </span><span class="identifier-syntax">total_phrases_to_compile</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">Count up the scale of the task</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">total_phrases_compiled</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">phrase</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ph</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">ph</span><span class="plain-syntax">, </span><span class="identifier-syntax">phrase</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">ph</span><span class="plain-syntax">-></span><span class="identifier-syntax">at_least_one_compiled_form_needed</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">total_phrases_to_compile</span><span class="plain-syntax">++;</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="5-id.html#SP6">§6</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>§7. </b>Stage two happens at least later, and may be repeated, so that it is
|
|
important not to do anything twice. This is intended as a final round-up of
|
|
any run-time resources which need to be made by the family.
|
|
</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">ImperativeDefinitions::compile_as_needed</span><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">imperative_defn_family</span><span class="plain-syntax"> *</span><span class="identifier-syntax">idf</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">idf</span><span class="plain-syntax">, </span><span class="reserved-syntax">imperative_defn_family</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><a href="5-idf.html#SP14" class="function-link"><span class="function-syntax">ImperativeDefinitionFamilies::compile_as_needed</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">idf</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> &</span><span class="identifier-syntax">total_phrases_compiled</span><span class="plain-syntax">, </span><span class="identifier-syntax">total_phrases_to_compile</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
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