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<!--Weave of 'Construction Sequence' 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 Modules</a></li><li><a href="index.html">core</a></li><li><a href="index.html#22">Chapter 22: Phrases</a></li><li><b>Construction Sequence</b></li></ul></div>
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<p class="purpose">To deal with all the |.i6t| interpreted commands which bring about the compilation of phrases, and to ensure that they are used in the correct order.</p>
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<ul class="toc"><li><a href="22-cs.html#SP1">§1. A day in the life</a></li><li><a href="22-cs.html#SP2">§2. Early morning</a></li><li><a href="22-cs.html#SP3">§3. Mid-morning</a></li><li><a href="22-cs.html#SP4">§4. Late morning</a></li><li><a href="22-cs.html#SP5">§5. Just before noon</a></li><li><a href="22-cs.html#SP6">§6. Noon</a></li><li><a href="22-cs.html#SP7">§7. Early afternoon</a></li><li><a href="22-cs.html#SP11">§11. Mid-afternoon</a></li><li><a href="22-cs.html#SP12">§12. Late Afternoon</a></li><li><a href="22-cs.html#SP15">§15. Evening</a></li></ul><hr class="tocbar">
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. A day in the life. </b>Suppose we compare the run of Inform to a single day. At dawn the program
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starts up. In the morning it finds out the names of all the constant values
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defined in the source text: names like "Mrs Blenkinsop", "hatstand", and
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so on. By noon it has also found out the wording used for phrases, such as
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"award prize (N - a number) to (gardener - a woman)". This means that in
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the afternoon it knows every name it ever will, and so it can work through
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the definitions of phrases like "award prize...". In the evening, it does
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some book-keeping, and at nightfall it shuts down.
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</p>
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<p class="commentary">We will use the story of our single day throughout this section on timing,
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because everything has to happen in just the right order.
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</p>
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<pre class="definitions code-font"><span class="definition-keyword">define</span> <span class="constant-syntax">DAWN_PHT</span><span class="plain-syntax"> </span><span class="constant-syntax">0</span>
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<span class="definition-keyword">define</span> <span class="constant-syntax">EARLY_MORNING_PHT</span><span class="plain-syntax"> </span><span class="constant-syntax">1</span>
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<span class="definition-keyword">define</span> <span class="constant-syntax">LATE_MORNING_PHT</span><span class="plain-syntax"> </span><span class="constant-syntax">2</span>
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<span class="definition-keyword">define</span> <span class="constant-syntax">PRE_NOON_PHT</span><span class="plain-syntax"> </span><span class="constant-syntax">3</span>
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<span class="definition-keyword">define</span> <span class="constant-syntax">EARLY_AFTERNOON_PHT</span><span class="plain-syntax"> </span><span class="constant-syntax">4</span>
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<span class="definition-keyword">define</span> <span class="constant-syntax">MID_AFTERNOON_PHT</span><span class="plain-syntax"> </span><span class="constant-syntax">5</span>
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<span class="definition-keyword">define</span> <span class="constant-syntax">LATE_AFTERNOON_PHT</span><span class="plain-syntax"> </span><span class="constant-syntax">6</span>
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<span class="definition-keyword">define</span> <span class="constant-syntax">EVENING_PHT</span><span class="plain-syntax"> </span><span class="constant-syntax">7</span>
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</pre>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">phrase_time_now</span><span class="plain-syntax"> = </span><span class="constant-syntax">DAWN_PHT</span><span class="plain-syntax">;</span>
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Phrases::Manager::advance_phrase_time_to</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">Phrases::Manager::advance_phrase_time_to</span></span>:<br/><a href="22-cs.html#SP4">§4</a>, <a href="22-cs.html#SP5">§5</a>, <a href="22-cs.html#SP7">§7</a>, <a href="22-cs.html#SP8">§8</a>, <a href="22-cs.html#SP9">§9</a>, <a href="22-cs.html#SP11">§11</a>, <a href="22-cs.html#SP12">§12</a>, <a href="22-cs.html#SP13">§13</a>, <a href="22-cs.html#SP14">§14</a>, <a href="22-cs.html#SP15">§15</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">advance_to</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">advance_to</span><span class="plain-syntax"> < </span><span class="identifier-syntax">phrase_time_now</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"Advance from %d to %d\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">phrase_time_now</span><span class="plain-syntax">, </span><span class="identifier-syntax">advance_to</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"The necessary phrase construction events are out of sequence"</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">phrase_time_now</span><span class="plain-syntax"> = </span><span class="identifier-syntax">advance_to</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="SP2" class="paragraph-anchor"></a><b>§2. Early morning. </b>We run through the phrase preambles to look for named rules like this:
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</p>
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<blockquote>
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<p>Instead of pushing the red button (this is the fire alarm rule): ...</p>
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</blockquote>
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<p class="commentary">This looking-for-names is done by parsing the preamble text to a PHUD in
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what is called "coarse mode", which can only get an approximate idea at
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best: at this stage the "Instead" rulebook and the "red button" don't
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exist, so most of the words here are meaningless. The PHUD which coarse
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mode parsing produces is far too sketchy to use, and is thrown away.
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But at least it does pick out the name "fire alarm rule", and Inform
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creates an empty "rule" structure called this, registering this as the
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name of a new constant.
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</p>
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<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>§3. Mid-morning. </b>This is when Inform is making its main traverses through assertions.
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Something very useful is happening, but it's happening somewhere else.
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Assertions such as
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</p>
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<blockquote>
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<p>Instead is a rulebook.</p>
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</blockquote>
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<p class="commentary">are being read, and rulebooks are therefore being created.
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</p>
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<p class="commentary firstcommentary"><a id="SP4" class="paragraph-anchor"></a><b>§4. Late morning. </b>With the assertions read, all the values have their names, and that means
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we can go back to phrases like:
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</p>
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<blockquote>
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<p>Instead of pushing the red button (this is the fire alarm rule): ...</p>
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</blockquote>
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<p class="commentary">and read them properly. So Inform now runs through the preambles again and
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parses them for a second time to PHUDs, but this time in "fine mode" rather
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than "coarse mode", and this time the result is not thrown away. If the
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phrase is a "To..." phrase declaration, then the PHUD is pretty sketchy and
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we parse more substantial PHTD and PHOD structures to accompany it. But if
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it is a rule, the PHUD contains a great deal of useful information, and we
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accompany it with essentially blank PHTD and PHOD structures. Either way, we
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end up with a triplet of PHUD, PHTD and PHOD, and these are combined into a
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new <span class="extract"><span class="extract-syntax">phrase</span></span> structure. The PHSF structure is initially created as a
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function of the PHTD: for example, if the phrase reads
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</p>
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<blockquote>
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<p>To award (points - a number): ...</p>
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</blockquote>
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<p class="commentary">then the PHTD notes that "points" is the name of a parameter whose kind is
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to be "number". The stack frame, PHSF, deduces that "points" will be a
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local variable of kind "number" within the phrase when it's running.
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Lastly, a blank PHRCD structure is created, filling out the set of five
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substructures.
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</p>
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<p class="commentary">As they are created, the "To..." phrases are insertion-sorted into a list of
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phrases in logical precedence order. This can be done now because it relies
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only on the kinds listed in the PHTD, all of which have existed since
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mid-morning.
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</p>
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<p class="commentary">For reasons discussed below, rules are not yet sorted. But the names created
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in mid-morning, such as "fire alarm rule", are associated with their
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phrases, and they are marked for what's called "automatic placement". For
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example, the fire alarm rule will automatically be placed into the Instead
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rulebook, because its preamble begins "Instead". The reason rules are only
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marked to be placed later is that placement has to occur in logical
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precedence order, but rules are harder to sort than phrases. They have to be
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sorted by their PHRCDs, not their PHTDs, and a PHRCD cannot even be parsed
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until afternoon because the conditions for a rule often mention phrases —
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for instance, "Instead of waiting when in darkness", making use of an "in
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darkness" phrase. So for now we just make a mental note to do automatic
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placement later on.
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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">Phrases::Manager::traverse</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">Phrases::Manager::traverse</span></span>:<br/>How To Compile - <a href="1-htc.html#SP2_7">§2.7</a></span></button><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><a href="22-cs.html#SP1" class="function-link"><span class="function-syntax">Phrases::Manager::advance_phrase_time_to</span></a><span class="plain-syntax">(</span><span class="constant-syntax">LATE_MORNING_PHT</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">progress_target</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">, </span><span class="identifier-syntax">progress_made</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">SyntaxTree::traverse_intp</span><span class="plain-syntax">(</span><a href="1-wtc.html#SP6" class="function-link"><span class="function-syntax">Task::syntax_tree</span></a><span class="plain-syntax">(), </span><a href="22-cs.html#SP4" class="function-link"><span class="function-syntax">Phrases::Manager::visit_to_count</span></a><span class="plain-syntax">, &</span><span class="identifier-syntax">progress_target</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">SyntaxTree::traverse_intp_intp</span><span class="plain-syntax">(</span><a href="1-wtc.html#SP6" class="function-link"><span class="function-syntax">Task::syntax_tree</span></a><span class="plain-syntax">(), </span><a href="22-cs.html#SP4" class="function-link"><span class="function-syntax">Phrases::Manager::visit_to_create</span></a><span class="plain-syntax">, &</span><span class="identifier-syntax">progress_target</span><span class="plain-syntax">, &</span><span class="identifier-syntax">progress_made</span><span class="plain-syntax">);</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Phrases::Manager::visit_to_count</span><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><span class="reserved-syntax">int</span><span class="plain-syntax"> *</span><span class="identifier-syntax">progress_target</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> (*</span><span class="identifier-syntax">progress_target</span><span class="plain-syntax">)++;</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Phrases::Manager::visit_to_create</span><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><span class="reserved-syntax">int</span><span class="plain-syntax"> *</span><span class="identifier-syntax">progress_target</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> *</span><span class="identifier-syntax">progress_made</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> (*</span><span class="identifier-syntax">progress_made</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">progress_made</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><a href="1-pp.html#SP1" class="function-link"><span class="function-syntax">ProgressBar::update</span></a><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">progress_made</span><span class="plain-syntax">))/((</span><span class="reserved-syntax">float</span><span class="plain-syntax">) (*</span><span class="identifier-syntax">progress_target</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::get_type</span><span class="plain-syntax">(</span><span class="identifier-syntax">p</span><span class="plain-syntax">) == </span><span class="identifier-syntax">RULE_NT</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><a href="22-ph.html#SP5" class="function-link"><span class="function-syntax">Phrases::create_from_preamble</span></a><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>
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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. Just before noon. </b>It is now nearly noon, and things appear to be a little untidy. Why
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are the "To..." phrases not yet registered with the excerpt parser?
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The answer is that we needed to wait until all of the "To..." phrases
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had been created as structures before we could safely proceed. The first
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phrase couldn't be registered until we knew the complete logical order
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of them all. Well: at last, we do know that, and can make the registration.
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Phrases are the very last things to get their names in Inform (well, not
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counting local variables, whose names only exist fleetingly).
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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">Phrases::Manager::register_meanings</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">Phrases::Manager::register_meanings</span></span>:<br/>How To Compile - <a href="1-htc.html#SP2_7">§2.7</a></span></button><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><a href="22-cs.html#SP1" class="function-link"><span class="function-syntax">Phrases::Manager::advance_phrase_time_to</span></a><span class="plain-syntax">(</span><span class="constant-syntax">PRE_NOON_PHT</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="22-tp.html#SP5" class="function-link"><span class="function-syntax">Routines::ToPhrases::register_all</span></a><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="SP6" class="paragraph-anchor"></a><b>§6. Noon. </b>When the final phrase is registered, the hour chimes. From this point
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onwards, there's no longer any text which can't be parsed because some
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of the names don't exist yet: everything exists.
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</p>
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<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>§7. Early afternoon. </b>In the afternoon, we begin by binding up the rulebooks. First, we go through
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the phrases destined to be rules, and for each we translate the PHUD (which
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contains mainly textual representations of the usage information, e.g.
|
|
"taking something (called the thingummy) which is in a lighted room during
|
|
Scene Two when the marble slab is open") to a PHRCD (which contains fully
|
|
parsed Inform data structures, e.g., an action pattern and a pointer to a
|
|
<span class="extract"><span class="extract-syntax">scene</span></span> structure). As noted above, this often means parsing conditions
|
|
which involve phrases, and that's why we're doing it in the afternoon.
|
|
</p>
|
|
|
|
<p class="commentary">During this PHUD-to-PHRCD parsing process, we make sure that the relevant
|
|
phrase's PHSF is the current stack frame, because it's here that the names
|
|
of any callings (e.g. "thingummy") are created as local variables to be
|
|
valid throughout the phrase.
|
|
</p>
|
|
|
|
<p class="commentary">Once we're done with this, the PHUD will never be used again.
|
|
</p>
|
|
|
|
<p class="commentary">Note that the PHRCDs have to be parsed in source text appearance order (the
|
|
order which <span class="extract"><span class="extract-syntax">LOOP_OVER</span></span> follows) so that the back reference "doing it" can
|
|
correctly refer to the most recently mentioned action.
|
|
</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">Phrases::Manager::parse_rule_parameters</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">Phrases::Manager::parse_rule_parameters</span></span>:<br/>How To Compile - <a href="1-htc.html#SP2_7">§2.7</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="22-cs.html#SP1" class="function-link"><span class="function-syntax">Phrases::Manager::advance_phrase_time_to</span></a><span class="plain-syntax">(</span><span class="constant-syntax">EARLY_AFTERNOON_PHT</span><span class="plain-syntax">);</span>
|
|
|
|
<span class="plain-syntax"> </span><span class="reserved-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="reserved-syntax">phrase</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax"> = </span><span class="identifier-syntax">ph</span><span class="plain-syntax">-></span><span class="element-syntax">declaration_node</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><a href="24-sf.html#SP7" class="function-link"><span class="function-syntax">Frames::make_current</span></a><span class="plain-syntax">(&(</span><span class="identifier-syntax">ph</span><span class="plain-syntax">-></span><span class="element-syntax">stack_frame</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">ph</span><span class="plain-syntax">-></span><span class="element-syntax">runtime_context_data</span><span class="plain-syntax"> =</span>
|
|
<span class="plain-syntax"> </span><a href="22-pu.html#SP20" class="function-link"><span class="function-syntax">Phrases::Usage::to_runtime_context_data</span></a><span class="plain-syntax">(&(</span><span class="identifier-syntax">ph</span><span class="plain-syntax">-></span><span class="element-syntax">usage_data</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><a href="24-sf.html#SP7" class="function-link"><span class="function-syntax">Frames::remove_current</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP8" class="paragraph-anchor"></a><b>§8. </b>We can finally make the automatic placements of rules into rulebooks: so
|
|
our "fire alarm rule" will at last be placed in the "Instead" rulebook. The
|
|
PHRCDs are used to make sure it appears in the right position.
|
|
</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">Phrases::Manager::add_rules_to_rulebooks</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">Phrases::Manager::add_rules_to_rulebooks</span></span>:<br/>How To Compile - <a href="1-htc.html#SP2_7">§2.7</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="22-cs.html#SP1" class="function-link"><span class="function-syntax">Phrases::Manager::advance_phrase_time_to</span></a><span class="plain-syntax">(</span><span class="constant-syntax">EARLY_AFTERNOON_PHT</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="21-rb.html#SP7" class="function-link"><span class="function-syntax">Rules::Bookings::make_automatic_placements</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">iname</span><span class="plain-syntax"> = </span><a href="27-hr.html#SP4" class="function-link"><span class="function-syntax">Hierarchy::find</span></a><span class="plain-syntax">(</span><span class="constant-syntax">NUMBER_RULEBOOKS_CREATED_HL</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="27-em.html#SP3" class="function-link"><span class="function-syntax">Emit::named_numeric_constant</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">iname</span><span class="plain-syntax">, (</span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">NUMBER_CREATED</span><span class="plain-syntax">(</span><span class="reserved-syntax">rulebook</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><a href="27-hr.html#SP4" class="function-link"><span class="function-syntax">Hierarchy::make_available</span></a><span class="plain-syntax">(</span><a href="27-em.html#SP2" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">iname</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP9" class="paragraph-anchor"></a><b>§9. </b>It might seem as if the rulebooks are now complete, but this is not true,
|
|
because we still have to take care of manual placements like:
|
|
</p>
|
|
|
|
<blockquote>
|
|
<p>The fire alarm rule is listed in the safety procedures rulebook.</p>
|
|
</blockquote>
|
|
|
|
<p class="commentary">This is where we get on with that, traversing the parse tree for sentences
|
|
of this general sort. Rules can also be unlisted, or constrained to happen
|
|
only conditionally, or substituted by other rules.
|
|
</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">Phrases::Manager::parse_rule_placements</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">Phrases::Manager::parse_rule_placements</span></span>:<br/>How To Compile - <a href="1-htc.html#SP2_7">§2.7</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="22-cs.html#SP1" class="function-link"><span class="function-syntax">Phrases::Manager::advance_phrase_time_to</span></a><span class="plain-syntax">(</span><span class="constant-syntax">EARLY_AFTERNOON_PHT</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">SyntaxTree::traverse</span><span class="plain-syntax">(</span><a href="1-wtc.html#SP6" class="function-link"><span class="function-syntax">Task::syntax_tree</span></a><span class="plain-syntax">(), </span><a href="22-cs.html#SP10" class="function-link"><span class="function-syntax">Phrases::Manager::visit_to_parse_placements</span></a><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></p>
|
|
|
|
<pre class="definitions code-font"><span class="definition-keyword">enum</span> <span class="constant-syntax">TRAVERSE_FOR_RULE_FILING_SMFT</span>
|
|
</pre>
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Phrases::Manager::visit_to_parse_placements</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">Phrases::Manager::visit_to_parse_placements</span></span>:<br/><a href="22-cs.html#SP9">§9</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>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">Node::get_type</span><span class="plain-syntax">(</span><span class="identifier-syntax">p</span><span class="plain-syntax">) == </span><span class="identifier-syntax">SENTENCE_NT</span><span class="plain-syntax">) &&</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">p</span><span class="plain-syntax">-></span><span class="element-syntax">down</span><span class="plain-syntax">) &&</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">Node::get_type</span><span class="plain-syntax">(</span><span class="identifier-syntax">p</span><span class="plain-syntax">-></span><span class="element-syntax">down</span><span class="plain-syntax">) == </span><span class="identifier-syntax">VERB_NT</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">prevailing_mood</span><span class="plain-syntax"> =</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Annotations::read_int</span><span class="plain-syntax">(</span><span class="identifier-syntax">p</span><span class="plain-syntax">-></span><span class="element-syntax">down</span><span class="plain-syntax">, </span><span class="identifier-syntax">verbal_certainty_ANNOT</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-ptmn.html#SP3_1_3" class="function-link"><span class="function-syntax">MajorNodes::try_special_meaning</span></a><span class="plain-syntax">(</span><span class="constant-syntax">TRAVERSE_FOR_RULE_FILING_SMFT</span><span class="plain-syntax">, </span><span class="identifier-syntax">p</span><span class="plain-syntax">-></span><span class="element-syntax">down</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP11" class="paragraph-anchor"></a><b>§11. Mid-afternoon. </b>It is now mid-afternoon, and the rulebooks are complete. It is time to
|
|
compile the I6 routines which will provide the run-time definitions of all
|
|
these phrases. This will be a long task, and much of it will be left until
|
|
the evening. But we do get rid of some easy cases now: the rules and
|
|
adjective definitions.
|
|
</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">Phrases::Manager::compile_first_block</span><button class="popup" onclick="togglePopup('usagePopup8')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup8">Usage of <span class="code-font"><span class="function-syntax">Phrases::Manager::compile_first_block</span></span>:<br/>How To Compile - <a href="1-htc.html#SP2_8">§2.8</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="22-cs.html#SP1" class="function-link"><span class="function-syntax">Phrases::Manager::advance_phrase_time_to</span></a><span class="plain-syntax">(</span><span class="constant-syntax">MID_AFTERNOON_PHT</span><span class="plain-syntax">);</span>
|
|
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="22-cs.html#SP11_1" class="named-paragraph-link"><span class="named-paragraph">Count up the scale of the task</span><span class="named-paragraph-number">11.1</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="22-cs.html#SP11_2" class="named-paragraph-link"><span class="named-paragraph">Compile definitions of rules in rulebooks</span><span class="named-paragraph-number">11.2</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="22-cs.html#SP11_3" class="named-paragraph-link"><span class="named-paragraph">Compile definitions of rules left out of rulebooks</span><span class="named-paragraph-number">11.3</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="22-cs.html#SP11_4" class="named-paragraph-link"><span class="named-paragraph">Compile phrases which define adjectives</span><span class="named-paragraph-number">11.4</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="22-cs.html#SP11_5" class="named-paragraph-link"><span class="named-paragraph">Mark To... phrases which have definite kinds for future compilation</span><span class="named-paragraph-number">11.5</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="22-cs.html#SP11_6" class="named-paragraph-link"><span class="named-paragraph">Throw problems for phrases with return kinds too vaguely defined</span><span class="named-paragraph-number">11.6</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="22-cs.html#SP11_7" class="named-paragraph-link"><span class="named-paragraph">Throw problems for inline phrases named as constants</span><span class="named-paragraph-number">11.7</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP11_1" class="paragraph-anchor"></a><b>§11.1. </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">11.1</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="reserved-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="reserved-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="element-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="22-cs.html#SP11">§11</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP11_2" class="paragraph-anchor"></a><b>§11.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Compile definitions of rules in rulebooks</span><span class="named-paragraph-number">11.2</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">rulebook</span><span class="plain-syntax"> *</span><span class="identifier-syntax">rb</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">rb</span><span class="plain-syntax">, </span><span class="reserved-syntax">rulebook</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><a href="21-rl2.html#SP19" class="function-link"><span class="function-syntax">Rulebooks::compile_rule_phrases</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">rb</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>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="22-cs.html#SP11">§11</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP11_3" class="paragraph-anchor"></a><b>§11.3. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Compile definitions of rules left out of rulebooks</span><span class="named-paragraph-number">11.3</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">rule</span><span class="plain-syntax"> *</span><span class="identifier-syntax">R</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">R</span><span class="plain-syntax">, </span><span class="reserved-syntax">rule</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><a href="21-rl.html#SP21" class="function-link"><span class="function-syntax">Rules::compile_definition</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">R</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>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="22-cs.html#SP11">§11</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP11_4" class="paragraph-anchor"></a><b>§11.4. </b>This doesn't compile all adjective definitions, only the ones which supply
|
|
a whole multi-step phrase to define them — a relatively little-used feature
|
|
of Inform.
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Compile phrases which define adjectives</span><span class="named-paragraph-number">11.4</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">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="reserved-syntax">phrase</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="22-pu.html#SP15" class="function-link"><span class="function-syntax">Phrases::Usage::get_effect</span></a><span class="plain-syntax">(&(</span><span class="identifier-syntax">ph</span><span class="plain-syntax">-></span><span class="element-syntax">usage_data</span><span class="plain-syntax">)) ==</span>
|
|
<span class="plain-syntax"> </span><span class="constant-syntax">DEFINITIONAL_PHRASE_EFF</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><a href="22-ph.html#SP11" class="function-link"><span class="function-syntax">Phrases::compile</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">ph</span><span class="plain-syntax">, &</span><span class="identifier-syntax">total_phrases_compiled</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><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="7-am.html#SP35" class="function-link"><span class="function-syntax">Adjectives::Meanings::compile_support_code</span></a><span class="plain-syntax">();</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="22-cs.html#SP11">§11</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP11_5" class="paragraph-anchor"></a><b>§11.5. </b>As we'll see, it's legal in Inform to define "To..." phrases with vague
|
|
kinds: "To expose (X - a value)", for example. This can't be compiled as
|
|
vaguely as the definition implies, since there would be no way to know how
|
|
to store X. Instead, for each different kind of X which is actually needed,
|
|
a fresh version of the phrase is compiled — one where X is a number, one
|
|
where it's a text, and so on. This is handled by making a "request" for the
|
|
phrase, indicating that a compiled version of it will be needed.
|
|
</p>
|
|
|
|
<p class="commentary">Since "To..." phrases are only compiled on request, we must remember to
|
|
request the boring ones with straightforward kinds ("To award (N - a number)
|
|
points", say). This is where we do it:
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Mark To... phrases which have definite kinds for future compilation</span><span class="named-paragraph-number">11.5</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">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="reserved-syntax">phrase</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax"> = </span><a href="22-ptd.html#SP12" class="function-link"><span class="function-syntax">Phrases::TypeData::kind</span></a><span class="plain-syntax">(&(</span><span class="identifier-syntax">ph</span><span class="plain-syntax">-></span><span class="element-syntax">type_data</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">Kinds::Behaviour::definite</span><span class="plain-syntax">(</span><span class="identifier-syntax">K</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="element-syntax">at_least_one_compiled_form_needed</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><a href="22-tp.html#SP6" class="function-link"><span class="function-syntax">Routines::ToPhrases::make_request</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">ph</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><span class="identifier-syntax">EMPTY_WORDING</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="22-cs.html#SP11">§11</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP11_6" class="paragraph-anchor"></a><b>§11.6. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Throw problems for phrases with return kinds too vaguely defined</span><span class="named-paragraph-number">11.6</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">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="reserved-syntax">phrase</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">KR</span><span class="plain-syntax"> = </span><a href="22-ptd.html#SP10" class="function-link"><span class="function-syntax">Phrases::TypeData::get_return_kind</span></a><span class="plain-syntax">(&(</span><span class="identifier-syntax">ph</span><span class="plain-syntax">-></span><span class="element-syntax">type_data</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">Kinds::Behaviour::semidefinite</span><span class="plain-syntax">(</span><span class="identifier-syntax">KR</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="22-ptd.html#SP26" class="function-link"><span class="function-syntax">Phrases::TypeData::arithmetic_operation</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">ph</span><span class="plain-syntax">) == -1)) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax"> = </span><a href="22-ph.html#SP10" class="function-link"><span class="function-syntax">Phrases::declaration_node</span></a><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">Problems::quote_source</span><span class="plain-syntax">(1, </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::handmade_problem</span><span class="plain-syntax">(</span><a href="1-wtc.html#SP6" class="function-link"><span class="function-syntax">Task::syntax_tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_ReturnKindVague</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_segment</span><span class="plain-syntax">(</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"The declaration %1 tries to set up a phrase which decides a "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"value which is too vaguely described. For example, 'To decide "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"which number is the target: ...' is fine, because 'number' "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"is clear about what kind of value should emerge; but 'To "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"decide which value is the target: ...' is not clear enough."</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_end</span><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">k</span><span class="plain-syntax">=1; </span><span class="identifier-syntax">k</span><span class="plain-syntax"><=26; </span><span class="identifier-syntax">k</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">Kinds::Behaviour::involves_var</span><span class="plain-syntax">(</span><span class="identifier-syntax">KR</span><span class="plain-syntax">, </span><span class="identifier-syntax">k</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="22-ptd.html#SP14" class="function-link"><span class="function-syntax">Phrases::TypeData::tokens_contain_variable</span></a><span class="plain-syntax">(&(</span><span class="identifier-syntax">ph</span><span class="plain-syntax">-></span><span class="element-syntax">type_data</span><span class="plain-syntax">), </span><span class="identifier-syntax">k</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">current_sentence</span><span class="plain-syntax"> = </span><a href="22-ph.html#SP10" class="function-link"><span class="function-syntax">Phrases::declaration_node</span></a><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">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">var_letter</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">PUT_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">var_letter</span><span class="plain-syntax">, </span><span class="character-syntax">'A'</span><span class="plain-syntax">+</span><span class="identifier-syntax">k</span><span class="plain-syntax">-1);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_source</span><span class="plain-syntax">(1, </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::quote_stream</span><span class="plain-syntax">(2, </span><span class="identifier-syntax">var_letter</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::handmade_problem</span><span class="plain-syntax">(</span><a href="1-wtc.html#SP6" class="function-link"><span class="function-syntax">Task::syntax_tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_ReturnKindUndetermined</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_segment</span><span class="plain-syntax">(</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"The declaration %1 tries to set up a phrase which decides a "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"value which is too vaguely described, because it involves "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"a kind variable (%2) which it can't determine through "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"usage."</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_end</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">var_letter</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="22-cs.html#SP11">§11</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP11_7" class="paragraph-anchor"></a><b>§11.7. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Throw problems for inline phrases named as constants</span><span class="named-paragraph-number">11.7</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">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="reserved-syntax">phrase</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><a href="22-ptd.html#SP25" class="function-link"><span class="function-syntax">Phrases::TypeData::invoked_inline</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">ph</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="22-pu.html#SP15" class="function-link"><span class="function-syntax">Phrases::Usage::has_name_as_constant</span></a><span class="plain-syntax">(&(</span><span class="identifier-syntax">ph</span><span class="plain-syntax">-></span><span class="element-syntax">usage_data</span><span class="plain-syntax">)))) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax"> = </span><a href="22-ph.html#SP10" class="function-link"><span class="function-syntax">Phrases::declaration_node</span></a><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">Problems::quote_source</span><span class="plain-syntax">(1, </span><span class="identifier-syntax">current_sentence</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::handmade_problem</span><span class="plain-syntax">(</span><a href="1-wtc.html#SP6" class="function-link"><span class="function-syntax">Task::syntax_tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_NamedInline</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_segment</span><span class="plain-syntax">(</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"The declaration %1 tries to give a name to a phrase which is "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"defined using inline Inform 6 code in (- markers -). Such "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"phrases can't be named and used as constants because they "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"have no independent existence, being instead made fresh "</span>
|
|
<span class="plain-syntax"> </span><span class="string-syntax">"each time they are used."</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Problems::issue_problem_end</span><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="22-cs.html#SP11">§11</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP12" class="paragraph-anchor"></a><b>§12. Late Afternoon. </b>Rules are pretty well sorted out now, but we still need to compile some I6
|
|
to show how they fit together. These miscellaneous function calls can happen
|
|
in any order, so long as they all occur in the late afternoon.
|
|
</p>
|
|
|
|
<p class="commentary">First, rules set to go off at a particular time need to have their timings
|
|
noted down:
|
|
</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">Phrases::Manager::TimedEventsTable</span><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="22-cs.html#SP1" class="function-link"><span class="function-syntax">Phrases::Manager::advance_phrase_time_to</span></a><span class="plain-syntax">(</span><span class="constant-syntax">LATE_AFTERNOON_PHT</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="22-tp2.html#SP3" class="function-link"><span class="function-syntax">Phrases::Timed::TimedEventsTable</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Phrases::Manager::TimedEventTimesTable</span><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="22-cs.html#SP1" class="function-link"><span class="function-syntax">Phrases::Manager::advance_phrase_time_to</span></a><span class="plain-syntax">(</span><span class="constant-syntax">LATE_AFTERNOON_PHT</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="22-tp2.html#SP3" class="function-link"><span class="function-syntax">Phrases::Timed::TimedEventTimesTable</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP13" class="paragraph-anchor"></a><b>§13. </b>Second, the rulebooks need to be compiled into I6 arrays:
|
|
</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">Phrases::Manager::rulebooks_array</span><button class="popup" onclick="togglePopup('usagePopup9')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup9">Usage of <span class="code-font"><span class="function-syntax">Phrases::Manager::rulebooks_array</span></span>:<br/>How To Compile - <a href="1-htc.html#SP2_8">§2.8</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="22-cs.html#SP1" class="function-link"><span class="function-syntax">Phrases::Manager::advance_phrase_time_to</span></a><span class="plain-syntax">(</span><span class="constant-syntax">LATE_AFTERNOON_PHT</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="21-rl2.html#SP19" class="function-link"><span class="function-syntax">Rulebooks::rulebooks_array_array</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Phrases::Manager::compile_rulebooks</span><button class="popup" onclick="togglePopup('usagePopup10')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup10">Usage of <span class="code-font"><span class="function-syntax">Phrases::Manager::compile_rulebooks</span></span>:<br/>How To Compile - <a href="1-htc.html#SP2_8">§2.8</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="22-cs.html#SP1" class="function-link"><span class="function-syntax">Phrases::Manager::advance_phrase_time_to</span></a><span class="plain-syntax">(</span><span class="constant-syntax">LATE_AFTERNOON_PHT</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="21-rl2.html#SP19" class="function-link"><span class="function-syntax">Rulebooks::compile_rulebooks</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Phrases::Manager::RulebookNames_array</span><button class="popup" onclick="togglePopup('usagePopup11')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup11">Usage of <span class="code-font"><span class="function-syntax">Phrases::Manager::RulebookNames_array</span></span>:<br/>How To Compile - <a href="1-htc.html#SP2_8">§2.8</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="22-cs.html#SP1" class="function-link"><span class="function-syntax">Phrases::Manager::advance_phrase_time_to</span></a><span class="plain-syntax">(</span><span class="constant-syntax">LATE_AFTERNOON_PHT</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="21-rl2.html#SP19" class="function-link"><span class="function-syntax">Rulebooks::RulebookNames_array</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP14" class="paragraph-anchor"></a><b>§14. </b>And finally, just as the sun slips below the horizon, we compile the code
|
|
which prints out values of the kind "rule" at run-time — for example, taking
|
|
the address of the routine which our example rule was compiled to and then
|
|
printing out "fire alarm rule".
|
|
</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">Phrases::Manager::RulePrintingRule_routine</span><button class="popup" onclick="togglePopup('usagePopup12')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup12">Usage of <span class="code-font"><span class="function-syntax">Phrases::Manager::RulePrintingRule_routine</span></span>:<br/>How To Compile - <a href="1-htc.html#SP2_8">§2.8</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="22-cs.html#SP1" class="function-link"><span class="function-syntax">Phrases::Manager::advance_phrase_time_to</span></a><span class="plain-syntax">(</span><span class="constant-syntax">LATE_AFTERNOON_PHT</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="21-rl.html#SP19" class="function-link"><span class="function-syntax">Rules::RulePrintingRule_routine</span></a><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP15" class="paragraph-anchor"></a><b>§15. Evening. </b>The twilight gathers, but our work is far from done. Recall that we have
|
|
accumulated compilation requests for "To..." phrases, but haven't actually
|
|
acted on them yet.
|
|
</p>
|
|
|
|
<p class="commentary">We have to do this in quite an open-ended way, because compiling one phrase
|
|
can easily generate fresh requests for others. For instance, suppose we have
|
|
the definition "To expose (X - a value)" in play, and suppose that when
|
|
compiling the phrase "To advertise", Inform runs into the line "expose the
|
|
hoarding text". This causes it to issue a compilation request for "To expose
|
|
(X - a text)". Perhaps we've compiled such a form already, but perhaps we
|
|
haven't. Compilation therefore goes on until all requests have been dealt
|
|
with.
|
|
</p>
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<p class="commentary">Compiling phrases also produces the need for other pieces of code to be
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generated — for example, suppose our phrase being compiled, "To advertise",
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includes the text:
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</p>
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|
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<blockquote>
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<p>let Z be "Two for the price of one! Just [expose price]!";</p>
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</blockquote>
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<p class="commentary">We are going to need to compile "Two for the price of one! Just [expose price]!"
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|
later on, in its own text substitution routine; but notice that it contains
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the need for "To expose (X - a number)", and that will generate a further
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|
phrase request.
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</p>
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<p class="commentary">Because of this and similar problems, it's impossible to compile all the
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|
phrases alone: we must compile phrases, then things arising from them, then
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|
phrases arising from those, then things arising from the phrases arising
|
|
from those, and so on, until we're done. The process is therefore structured
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|
as a set of "coroutines" which each carry out as much as they can and then
|
|
hand over to the others to generate more work. (Indeed, the routine below
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|
can be called multiple times in the course of the evening.)
|
|
</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">Phrases::Manager::compile_as_needed</span><button class="popup" onclick="togglePopup('usagePopup13')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup13">Usage of <span class="code-font"><span class="function-syntax">Phrases::Manager::compile_as_needed</span></span>:<br/>How To Compile - <a href="1-htc.html#SP2_8">§2.8</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="22-cs.html#SP1" class="function-link"><span class="function-syntax">Phrases::Manager::advance_phrase_time_to</span></a><span class="plain-syntax">(</span><span class="constant-syntax">EVENING_PHT</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">rule</span><span class="plain-syntax"> *</span><span class="identifier-syntax">R</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">R</span><span class="plain-syntax">, </span><span class="reserved-syntax">rule</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><a href="21-rl.html#SP21" class="function-link"><span class="function-syntax">Rules::compile_definition</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">R</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="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">repeat</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">while</span><span class="plain-syntax"> (</span><span class="identifier-syntax">repeat</span><span class="plain-syntax">) {</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">repeat</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><a href="22-tp.html#SP8" class="function-link"><span class="function-syntax">Routines::ToPhrases::compilation_coroutine</span></a><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="constant-syntax">0</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">repeat</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="26-lt.html#SP3" class="function-link"><span class="function-syntax">ListTogether::compilation_coroutine</span></a><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">repeat</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">ifdef</span><span class="plain-syntax"> </span><span class="identifier-syntax">IF_MODULE</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">PL::Actions::ScopeLoops::compilation_coroutine</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">repeat</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">endif</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="17-ts.html#SP10" class="function-link"><span class="function-syntax">Strings::TextSubstitutions::compilation_coroutine</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">FALSE</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">repeat</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="12-cdp.html#SP2" class="function-link"><span class="function-syntax">Calculus::Propositions::Deferred::compilation_coroutine</span></a><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">repeat</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>
|
|
</pre>
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