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<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../inform7n.html">Inform7</a></li><li><a href="index.html">runtime</a></li><li><a href="index.html#2">Chapter 2: Emission</a></li><li><b>Emit Arrays</b></li></ul></div>
<p class="purpose">Here is how bytecode to create ready-initialised arrays of Inter data is emitted.</p>
<ul class="toc"><li><a href="2-ea.html#SP1">&#167;1. Introduction</a></li><li><a href="2-ea.html#SP2">&#167;2. Begin</a></li><li><a href="2-ea.html#SP4">&#167;4. Fill</a></li><li><a href="2-ea.html#SP5">&#167;5. End</a></li><li><a href="2-ea.html#SP6">&#167;6. Implementation</a></li></ul><hr class="tocbar">
<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>&#167;1. Introduction. </b>This section provides an API for the rest of the <a href="index.html" class="internal">runtime</a> and <a href="../imperative-module/index.html" class="internal">imperative</a>
modules to use when creating arrays of data in Inter memory. It's easy to use:
</p>
<ul class="items"><li>&#9679; Call <a href="2-ea.html#SP2" class="internal">EmitArrays::begin_word</a> or one of its variants.
</li><li>&#9679; Fill the array with its initial values.
</li><li>&#9679; Call <a href="2-ea.html#SP5" class="internal">EmitArrays::end</a>.
</li></ul>
<p class="commentary">Unlike the API for emitting functions, this one is re-enterable: that is, a
second array can independently be started while the first is still going on,
provided that the second is completed before the first is resumes.
</p>
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>&#167;2. Begin. </b>Call exactly one of these functions. In each case the kind <span class="extract"><span class="extract-syntax">K</span></span> is only weakly
enforced; it's fine to store arbitrary data with <span class="extract"><span class="extract-syntax">K</span></span> being <span class="extract"><span class="extract-syntax">NULL</span></span>.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="function-syntax">EmitArrays::begin_word</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">EmitArrays::begin_word</span></span>:<br/>List Literals - <a href="4-ll.html#SP1">&#167;1</a><br/>Box Quotations - <a href="4-bq.html#SP2">&#167;2</a><br/>Instances - <a href="5-ins.html#SP4">&#167;4</a><br/>Multimedia - <a href="5-mlt.html#SP2_2">&#167;2.2</a>, <a href="5-mlt.html#SP3_2">&#167;3.2</a><br/>Dialogue Beat Instances - <a href="5-dbi.html#SP2">&#167;2</a>, <a href="5-dbi.html#SP2_9">&#167;2.9</a><br/>Dialogue - <a href="5-dli.html#SP3">&#167;3</a><br/>Dialogue Choice Instances - <a href="5-dci.html#SP3">&#167;3</a><br/>Relations - <a href="5-rlt.html#SP10">&#167;10</a><br/>Kind Constructors - <a href="5-kc.html#SP32_3_2">&#167;32.3.2</a><br/>Kind IDs - <a href="5-ki.html#SP9_1">&#167;9.1</a><br/>Test Scripts - <a href="5-ts.html#SP4">&#167;4</a><br/>The Player - <a href="6-tp.html#SP1">&#167;1</a><br/>The Map - <a href="6-tm.html#SP1">&#167;1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">name</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>
<span class="plain-syntax"> </span><span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Packaging::enter_home_of</span><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-ea.html#SP8" class="function-link"><span class="function-syntax">EmitArrays::begin_inner</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">name</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="identifier-syntax">CONST_LIST_FORMAT_WORDS</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="function-syntax">EmitArrays::begin_word_by_extent</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">EmitArrays::begin_word_by_extent</span></span>:<br/>Relations - <a href="5-rlt.html#SP10_3">&#167;10.3</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">name</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>
<span class="plain-syntax"> </span><span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Packaging::enter_home_of</span><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-ea.html#SP8" class="function-link"><span class="function-syntax">EmitArrays::begin_inner</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">name</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="identifier-syntax">CONST_LIST_FORMAT_WORDS_BY_EXTENT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="function-syntax">EmitArrays::begin_unchecked</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">EmitArrays::begin_unchecked</span></span>:<br/>Default Values - <a href="2-dv.html#SP2_8">&#167;2.8</a><br/>Short Names - <a href="2-sn.html#SP4">&#167;4</a><br/>List Literals - <a href="4-ll.html#SP2">&#167;2</a><br/>Text Literals - <a href="4-tl.html#SP1">&#167;1</a><br/>Text Substitutions - <a href="4-ts.html#SP1">&#167;1</a><br/>Relation Literals - <a href="4-rl.html#SP1">&#167;1</a><br/>Stored Action Literals - <a href="4-sal.html#SP1">&#167;1</a><br/>Relations - <a href="5-rlt.html#SP6_3">&#167;6.3</a>, <a href="5-rlt.html#SP7">&#167;7</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">name</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Packaging::enter_home_of</span><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-ea.html#SP8" class="function-link"><span class="function-syntax">EmitArrays::begin_inner</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">, </span><span class="identifier-syntax">CONST_LIST_FORMAT_WORDS</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="function-syntax">EmitArrays::begin_byte</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">EmitArrays::begin_byte</span></span>:<br/>Multimedia - <a href="5-mlt.html#SP2_1">&#167;2.1</a><br/>Tables - <a href="5-tbl.html#SP2_2">&#167;2.2</a><br/>Test Scripts - <a href="5-ts.html#SP4">&#167;4</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">name</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>
<span class="plain-syntax"> </span><span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Packaging::enter_home_of</span><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-ea.html#SP8" class="function-link"><span class="function-syntax">EmitArrays::begin_inner</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">name</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="identifier-syntax">CONST_LIST_FORMAT_BYTES</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="function-syntax">EmitArrays::begin_byte_by_extent</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">EmitArrays::begin_byte_by_extent</span></span>:<br/>Relations - <a href="5-rlt.html#SP10_3">&#167;10.3</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">name</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>
<span class="plain-syntax"> </span><span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Packaging::enter_home_of</span><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-ea.html#SP8" class="function-link"><span class="function-syntax">EmitArrays::begin_inner</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">name</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="identifier-syntax">CONST_LIST_FORMAT_BYTES_BY_EXTENT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="function-syntax">EmitArrays::begin_bounded</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">EmitArrays::begin_bounded</span></span>:<br/>Tables - <a href="5-tbl.html#SP2_1_1">&#167;2.1.1</a>, <a href="5-tbl.html#SP2_1_1_1">&#167;2.1.1.1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">name</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>
<span class="plain-syntax"> </span><span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Packaging::enter_home_of</span><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-ea.html#SP8" class="function-link"><span class="function-syntax">EmitArrays::begin_inner</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">name</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="identifier-syntax">CONST_LIST_FORMAT_B_WORDS</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="function-syntax">EmitArrays::begin_verb</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">EmitArrays::begin_verb</span></span>:<br/>Command Grammars - <a href="7-cg.html#SP11">&#167;11</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">name</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>
<span class="plain-syntax"> </span><span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Packaging::enter_home_of</span><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-ea.html#SP8" class="function-link"><span class="function-syntax">EmitArrays::begin_inner</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">name</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="identifier-syntax">CONST_LIST_FORMAT_GRAMMAR</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="function-syntax">EmitArrays::begin_inline</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">EmitArrays::begin_inline</span></span>:<br/>Door Instances - <a href="5-di.html#SP6">&#167;6</a><br/>Action Bitmap Property - <a href="6-abp.html#SP1">&#167;1</a><br/>Name Properties - <a href="7-np.html#SP4">&#167;4</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">name</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>
<span class="plain-syntax"> </span><span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Packaging::enter_home_of</span><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-ea.html#SP8" class="function-link"><span class="function-syntax">EmitArrays::begin_inner</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">name</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="identifier-syntax">CONST_LIST_FORMAT_INLINE</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>&#167;3. </b>Sum constants are not really arrays at all, but for difficult reasons to
do with linking we store them as such for now. The idea is that we want a
constant like <span class="extract"><span class="extract-syntax">CONST1 + CONST2 + CONST3</span></span>, in circumstances where we don't
know those values right now &mdash; they may be defined in external kits of Inter
code. We therefore cannot fold those into a constant value yet.
</p>
<p class="commentary">Instead we store this as if it were an array of three entries, with references
to symbols to be defined externally.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="function-syntax">EmitArrays::begin_sum_constant</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">EmitArrays::begin_sum_constant</span></span>:<br/>Relations - <a href="5-rlt.html#SP6_3_2">&#167;6.3.2</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">name</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>
<span class="plain-syntax"> </span><span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Packaging::enter_home_of</span><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-ea.html#SP8" class="function-link"><span class="function-syntax">EmitArrays::begin_inner</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">name</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="identifier-syntax">CONST_LIST_FORMAT_SUM</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP4" class="paragraph-anchor"></a><b>&#167;4. Fill. </b>Next call the following functions to add entries to the array. It's fine to
mix and match the different sorts of entry: we're not trying to make something
which would be a typesafe list in I7, so they can be absolutely any data.
</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">EmitArrays::numeric_entry</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">EmitArrays::numeric_entry</span></span>:<br/>The Heap - <a href="2-th.html#SP6">&#167;6</a><br/>Default Values - <a href="2-dv.html#SP2_8">&#167;2.8</a>, <a href="2-dv.html#SP2_8_1">&#167;2.8.1</a><br/>List Literals - <a href="4-ll.html#SP1">&#167;1</a>, <a href="4-ll.html#SP2">&#167;2</a><br/>Box Quotations - <a href="4-bq.html#SP2">&#167;2</a><br/>Relation Literals - <a href="4-rl.html#SP1">&#167;1</a><br/>Stored Action Literals - <a href="4-sal.html#SP1">&#167;1</a><br/>Instances - <a href="5-ins.html#SP4">&#167;4</a><br/>Multimedia - <a href="5-mlt.html#SP2_1">&#167;2.1</a>, <a href="5-mlt.html#SP2_2">&#167;2.2</a>, <a href="5-mlt.html#SP3_2">&#167;3.2</a><br/>Tables - <a href="5-tbl.html#SP2_1_1_1_4">&#167;2.1.1.1.4</a>, <a href="5-tbl.html#SP2_2_3">&#167;2.2.3</a><br/>Dialogue Beat Instances - <a href="5-dbi.html#SP2">&#167;2</a>, <a href="5-dbi.html#SP2_1">&#167;2.1</a>, <a href="5-dbi.html#SP2_2">&#167;2.2</a>, <a href="5-dbi.html#SP2_4">&#167;2.4</a>, <a href="5-dbi.html#SP2_5">&#167;2.5</a>, <a href="5-dbi.html#SP2_6">&#167;2.6</a>, <a href="5-dbi.html#SP2_9">&#167;2.9</a>, <a href="5-dbi.html#SP3">&#167;3</a><br/>Dialogue - <a href="5-dli.html#SP3_2">&#167;3.2</a>, <a href="5-dli.html#SP3_3">&#167;3.3</a>, <a href="5-dli.html#SP3_4">&#167;3.4</a>, <a href="5-dli.html#SP3_6">&#167;3.6</a>, <a href="5-dli.html#SP3_7">&#167;3.7</a>, <a href="5-dli.html#SP3_8">&#167;3.8</a>, <a href="5-dli.html#SP3_9">&#167;3.9</a><br/>Dialogue Choice Instances - <a href="5-dci.html#SP3_2">&#167;3.2</a>, <a href="5-dci.html#SP3_3">&#167;3.3</a>, <a href="5-dci.html#SP3_4">&#167;3.4</a>, <a href="5-dci.html#SP3_5">&#167;3.5</a><br/>Relations - <a href="5-rlt.html#SP6_3">&#167;6.3</a>, <a href="5-rlt.html#SP6_3_3">&#167;6.3.3</a>, <a href="5-rlt.html#SP7">&#167;7</a>, <a href="5-rlt.html#SP9">&#167;9</a>, <a href="5-rlt.html#SP10_2">&#167;10.2</a>, <a href="5-rlt.html#SP10_3">&#167;10.3</a><br/>Kind Constructors - <a href="5-kc.html#SP28">&#167;28</a>, <a href="5-kc.html#SP32_3_2">&#167;32.3.2</a><br/>Kind IDs - <a href="5-ki.html#SP9_1_1_1">&#167;9.1.1.1</a>, <a href="5-ki.html#SP9_1_1_2">&#167;9.1.1.2</a><br/>Test Scripts - <a href="5-ts.html#SP4">&#167;4</a><br/>The Player - <a href="6-tp.html#SP1">&#167;1</a><br/>The Map - <a href="6-tm.html#SP1">&#167;1</a><br/>Action Bitmap Property - <a href="6-abp.html#SP1">&#167;1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">N</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><a href="2-ea.html#SP9" class="function-link"><span class="function-syntax">EmitArrays::entry_inner</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">InterValuePairs::number</span><span class="plain-syntax">(</span><span class="identifier-syntax">N</span><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">EmitArrays::iname_entry</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">EmitArrays::iname_entry</span></span>:<br/>The Heap - <a href="2-th.html#SP6">&#167;6</a><br/>Short Names - <a href="2-sn.html#SP4">&#167;4</a><br/>List Literals - <a href="4-ll.html#SP2">&#167;2</a>, <a href="4-ll.html#SP7_1">&#167;7.1</a><br/>Text Literals - <a href="4-tl.html#SP1">&#167;1</a><br/>Text Substitutions - <a href="4-ts.html#SP1">&#167;1</a><br/>Relation Literals - <a href="4-rl.html#SP1">&#167;1</a><br/>Stored Action Literals - <a href="4-sal.html#SP1">&#167;1</a><br/>Instances - <a href="5-ins.html#SP4">&#167;4</a><br/>Door Instances - <a href="5-di.html#SP6">&#167;6</a><br/>Multimedia - <a href="5-mlt.html#SP2_2">&#167;2.2</a>, <a href="5-mlt.html#SP3_2">&#167;3.2</a><br/>Tables - <a href="5-tbl.html#SP2_1_1">&#167;2.1.1</a>, <a href="5-tbl.html#SP2_1_1_1_3">&#167;2.1.1.1.3</a>, <a href="5-tbl.html#SP2_1_1_1_5">&#167;2.1.1.1.5</a><br/>Dialogue Beat Instances - <a href="5-dbi.html#SP2">&#167;2</a>, <a href="5-dbi.html#SP2_1">&#167;2.1</a>, <a href="5-dbi.html#SP2_2">&#167;2.2</a>, <a href="5-dbi.html#SP2_3">&#167;2.3</a>, <a href="5-dbi.html#SP2_4">&#167;2.4</a>, <a href="5-dbi.html#SP2_5">&#167;2.5</a>, <a href="5-dbi.html#SP2_6">&#167;2.6</a>, <a href="5-dbi.html#SP3">&#167;3</a><br/>Dialogue - <a href="5-dli.html#SP3_2">&#167;3.2</a>, <a href="5-dli.html#SP3_3">&#167;3.3</a>, <a href="5-dli.html#SP3_4">&#167;3.4</a>, <a href="5-dli.html#SP3_5">&#167;3.5</a>, <a href="5-dli.html#SP3_6">&#167;3.6</a>, <a href="5-dli.html#SP3_7">&#167;3.7</a>, <a href="5-dli.html#SP3_8">&#167;3.8</a><br/>Dialogue Choice Instances - <a href="5-dci.html#SP3_3">&#167;3.3</a>, <a href="5-dci.html#SP3_4">&#167;3.4</a><br/>Relations - <a href="5-rlt.html#SP6_3_2">&#167;6.3.2</a>, <a href="5-rlt.html#SP6_3_2_1">&#167;6.3.2.1</a>, <a href="5-rlt.html#SP6_3_3">&#167;6.3.3</a>, <a href="5-rlt.html#SP6_3_6">&#167;6.3.6</a>, <a href="5-rlt.html#SP7">&#167;7</a>, <a href="5-rlt.html#SP10_2">&#167;10.2</a><br/>Kind Constructors - <a href="5-kc.html#SP28">&#167;28</a><br/>Kind IDs - <a href="5-ki.html#SP6">&#167;6</a>, <a href="5-ki.html#SP9_1">&#167;9.1</a><br/>Test Scripts - <a href="5-ts.html#SP4">&#167;4</a><br/>The Player - <a href="6-tp.html#SP1">&#167;1</a><br/>The Map - <a href="6-tm.html#SP1">&#167;1</a><br/>Command Grammar Lines - <a href="7-cgl.html#SP6_1">&#167;6.1</a>, <a href="7-cgl.html#SP6_4">&#167;6.4</a>, <a href="7-cgl.html#SP7">&#167;7</a>, <a href="7-cgl.html#SP8">&#167;8</a>, <a href="7-cgl.html#SP10">&#167;10</a>, <a href="7-cgl.html#SP14_4">&#167;14.4</a>, <a href="7-cgl.html#SP14_5">&#167;14.5</a><br/>Command Grammar Tokens - <a href="7-cgt.html#SP1_3">&#167;1.3</a>, <a href="7-cgt.html#SP1_4_3">&#167;1.4.3</a>, <a href="7-cgt.html#SP1_5">&#167;1.5</a><br/>Noun Filter Tokens - <a href="7-nft.html#SP5">&#167;5</a></span></button><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>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">alias</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">iname</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">alias</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterNames::to_symbol</span><span class="plain-syntax">(</span><a href="2-hrr.html#SP11" class="function-link"><span class="function-syntax">Hierarchy::find</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NOTHING_HL</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="identifier-syntax">alias</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterNames::to_symbol</span><span class="plain-syntax">(</span><span class="identifier-syntax">iname</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-ea.html#SP9" class="function-link"><span class="function-syntax">EmitArrays::entry_inner</span></a><span class="plain-syntax">(</span><a href="2-emt.html#SP3" class="function-link"><span class="function-syntax">Emit::symbol_to_value_pair</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">alias</span><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">EmitArrays::null_entry</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">EmitArrays::null_entry</span></span>:<br/>Relation Literals - <a href="4-rl.html#SP1">&#167;1</a><br/>Multimedia - <a href="5-mlt.html#SP2_2">&#167;2.2</a><br/>Tables - <a href="5-tbl.html#SP2_1_1_1_3">&#167;2.1.1.1.3</a><br/>Relations - <a href="5-rlt.html#SP6_3">&#167;6.3</a>, <a href="5-rlt.html#SP7">&#167;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="2-ea.html#SP4" class="function-link"><span class="function-syntax">EmitArrays::iname_entry</span></a><span class="plain-syntax">(</span><a href="2-hrr.html#SP11" class="function-link"><span class="function-syntax">Hierarchy::find</span></a><span class="plain-syntax">(</span><span class="constant-syntax">NULL_HL</span><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">EmitArrays::text_entry</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">EmitArrays::text_entry</span></span>:<br/>Responses - <a href="4-rsp.html#SP6">&#167;6</a><br/>Relation Literals - <a href="4-rl.html#SP1">&#167;1</a><br/>Multimedia - <a href="5-mlt.html#SP2_2">&#167;2.2</a>, <a href="5-mlt.html#SP3_2">&#167;3.2</a><br/>Relations - <a href="5-rlt.html#SP6_3_1">&#167;6.3.1</a>, <a href="5-rlt.html#SP6_3_5">&#167;6.3.5</a>, <a href="5-rlt.html#SP7">&#167;7</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">content</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_pair</span><span class="plain-syntax"> </span><span class="identifier-syntax">val</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterValuePairs::from_text</span><span class="plain-syntax">(</span><a href="2-emt.html#SP1" class="function-link"><span class="function-syntax">Emit::at</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">content</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-ea.html#SP9" class="function-link"><span class="function-syntax">EmitArrays::entry_inner</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">val</span><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">EmitArrays::dword_entry</span><button class="popup" onclick="togglePopup('usagePopup14')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup14">Usage of <span class="code-font"><span class="function-syntax">EmitArrays::dword_entry</span></span>:<br/>Command Grammars - <a href="7-cg.html#SP11">&#167;11</a><br/>Command Grammar Lines - <a href="7-cgl.html#SP2">&#167;2</a><br/>Command Grammar Tokens - <a href="7-cgt.html#SP1_1">&#167;1.1</a><br/>Name Properties - <a href="7-np.html#SP4">&#167;4</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">content</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_pair</span><span class="plain-syntax"> </span><span class="identifier-syntax">val</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterValuePairs::from_singular_dword</span><span class="plain-syntax">(</span><a href="2-emt.html#SP1" class="function-link"><span class="function-syntax">Emit::at</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">content</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-ea.html#SP9" class="function-link"><span class="function-syntax">EmitArrays::entry_inner</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">val</span><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">EmitArrays::plural_dword_entry</span><button class="popup" onclick="togglePopup('usagePopup15')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup15">Usage of <span class="code-font"><span class="function-syntax">EmitArrays::plural_dword_entry</span></span>:<br/>Name Properties - <a href="7-np.html#SP4">&#167;4</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">content</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_pair</span><span class="plain-syntax"> </span><span class="identifier-syntax">val</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterValuePairs::from_plural_dword</span><span class="plain-syntax">(</span><a href="2-emt.html#SP1" class="function-link"><span class="function-syntax">Emit::at</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">content</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-ea.html#SP9" class="function-link"><span class="function-syntax">EmitArrays::entry_inner</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">val</span><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">EmitArrays::generic_entry</span><button class="popup" onclick="togglePopup('usagePopup16')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup16">Usage of <span class="code-font"><span class="function-syntax">EmitArrays::generic_entry</span></span>:<br/>Default Values - <a href="2-dv.html#SP1">&#167;1</a>, <a href="2-dv.html#SP2_8_1">&#167;2.8.1</a><br/>Tables - <a href="5-tbl.html#SP2_1_1_1_4">&#167;2.1.1.1.4</a><br/>Variables - <a href="5-vrb.html#SP15">&#167;15</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_pair</span><span class="plain-syntax"> </span><span class="identifier-syntax">val</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><a href="2-ea.html#SP9" class="function-link"><span class="function-syntax">EmitArrays::entry_inner</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">val</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>&#167;5. End. </b>And then call this to conclude:
</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">EmitArrays::end</span><button class="popup" onclick="togglePopup('usagePopup17')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup17">Usage of <span class="code-font"><span class="function-syntax">EmitArrays::end</span></span>:<br/>Default Values - <a href="2-dv.html#SP2_8">&#167;2.8</a><br/>Short Names - <a href="2-sn.html#SP4">&#167;4</a><br/>List Literals - <a href="4-ll.html#SP1">&#167;1</a>, <a href="4-ll.html#SP2">&#167;2</a><br/>Text Literals - <a href="4-tl.html#SP1">&#167;1</a><br/>Text Substitutions - <a href="4-ts.html#SP1">&#167;1</a><br/>Box Quotations - <a href="4-bq.html#SP2">&#167;2</a><br/>Relation Literals - <a href="4-rl.html#SP1">&#167;1</a><br/>Stored Action Literals - <a href="4-sal.html#SP1">&#167;1</a><br/>Instances - <a href="5-ins.html#SP4">&#167;4</a><br/>Door Instances - <a href="5-di.html#SP6">&#167;6</a><br/>Multimedia - <a href="5-mlt.html#SP2_1">&#167;2.1</a>, <a href="5-mlt.html#SP2_2">&#167;2.2</a>, <a href="5-mlt.html#SP3_2">&#167;3.2</a><br/>Tables - <a href="5-tbl.html#SP2_1_1">&#167;2.1.1</a>, <a href="5-tbl.html#SP2_1_1_1">&#167;2.1.1.1</a>, <a href="5-tbl.html#SP2_2">&#167;2.2</a><br/>Dialogue Beat Instances - <a href="5-dbi.html#SP2">&#167;2</a>, <a href="5-dbi.html#SP2_9">&#167;2.9</a><br/>Dialogue - <a href="5-dli.html#SP3">&#167;3</a><br/>Dialogue Choice Instances - <a href="5-dci.html#SP3">&#167;3</a><br/>Relations - <a href="5-rlt.html#SP6_3">&#167;6.3</a>, <a href="5-rlt.html#SP6_3_2">&#167;6.3.2</a>, <a href="5-rlt.html#SP7">&#167;7</a>, <a href="5-rlt.html#SP10">&#167;10</a>, <a href="5-rlt.html#SP10_3">&#167;10.3</a><br/>Kind Constructors - <a href="5-kc.html#SP32_3_2">&#167;32.3.2</a><br/>Kind IDs - <a href="5-ki.html#SP9_1">&#167;9.1</a><br/>Test Scripts - <a href="5-ts.html#SP4">&#167;4</a><br/>The Player - <a href="6-tp.html#SP1">&#167;1</a><br/>The Map - <a href="6-tm.html#SP1">&#167;1</a><br/>Action Bitmap Property - <a href="6-abp.html#SP1">&#167;1</a><br/>Command Grammars - <a href="7-cg.html#SP11">&#167;11</a><br/>Name Properties - <a href="7-np.html#SP4">&#167;4</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><a href="2-ea.html#SP10" class="function-link"><span class="function-syntax">EmitArrays::end_inner</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Packaging::exit</span><span class="plain-syntax">(</span><a href="2-emt.html#SP1" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">save</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP6" class="paragraph-anchor"></a><b>&#167;6. Implementation. </b>The rest of this section is not part of the public API, and shouldn't be called.
</p>
<p class="commentary">The implementation would be easy if it weren't for the re-enterability, which
means we have to store an arbitrary number of half-finished arrays in memory.
We do this with a stack of these objects, one for each such array:
</p>
<pre class="displayed-code all-displayed-code code-font">
<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">nascent_array</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">array_name_symbol</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">entry_kind</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">array_form</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">space_used</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">capacity</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_pair</span><span class="plain-syntax"> *</span><span class="identifier-syntax">entry_storage</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">CLASS_DEFINITION</span>
<span class="plain-syntax">} </span><span class="reserved-syntax">nascent_array</span><span class="plain-syntax">;</span>
<span class="identifier-syntax">lifo_stack</span><span class="plain-syntax"> *</span><span class="identifier-syntax">emission_array_stack</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">; </span><span class="comment-syntax"> of </span><span class="extract"><span class="extract-syntax">nascent_array</span></span>
<span class="reserved-syntax">nascent_array</span><span class="plain-syntax"> *</span><span class="function-syntax">EmitArrays::current</span><button class="popup" onclick="togglePopup('usagePopup18')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup18">Usage of <span class="code-font"><span class="function-syntax">EmitArrays::current</span></span>:<br/><a href="2-ea.html#SP9">&#167;9</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">emission_array_stack</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">TOP_OF_LIFO_STACK</span><span class="plain-syntax">(</span><span class="reserved-syntax">nascent_array</span><span class="plain-syntax">, </span><span class="identifier-syntax">emission_array_stack</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<ul class="endnotetexts"><li>The structure nascent_array is accessed in 4/ll and here.</li></ul>
<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>&#167;7. </b>Until 2021, Inform went to some trouble to re-use these objects in memory.
The memory saving was not worth the complexity and now we simply throw them away
after each use.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">nascent_array</span><span class="plain-syntax"> *</span><span class="function-syntax">EmitArrays::push_new</span><button class="popup" onclick="togglePopup('usagePopup19')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup19">Usage of <span class="code-font"><span class="function-syntax">EmitArrays::push_new</span></span>:<br/><a href="2-ea.html#SP8">&#167;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><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">emission_array_stack</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">emission_array_stack</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NEW_LIFO_STACK</span><span class="plain-syntax">(</span><span class="reserved-syntax">nascent_array</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">nascent_array</span><span class="plain-syntax"> *</span><span class="identifier-syntax">A</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">nascent_array</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">capacity</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">A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">space_used</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">A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">entry_kind</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">array_name_symbol</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">array_form</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CONST_LIST_FORMAT_WORDS</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">entry_storage</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">PUSH_TO_LIFO_STACK</span><span class="plain-syntax">(</span><span class="identifier-syntax">A</span><span class="plain-syntax">, </span><span class="reserved-syntax">nascent_array</span><span class="plain-syntax">, </span><span class="identifier-syntax">emission_array_stack</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">A</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">nascent_array</span><span class="plain-syntax"> *</span><span class="function-syntax">EmitArrays::pull</span><button class="popup" onclick="togglePopup('usagePopup20')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup20">Usage of <span class="code-font"><span class="function-syntax">EmitArrays::pull</span></span>:<br/><a href="2-ea.html#SP10">&#167;10</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">emission_array_stack</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">PULL_FROM_LIFO_STACK</span><span class="plain-syntax">(</span><span class="reserved-syntax">nascent_array</span><span class="plain-syntax">, </span><span class="identifier-syntax">emission_array_stack</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no array stack"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP8" class="paragraph-anchor"></a><b>&#167;8. </b>The various ways an array can begin all merge into this function:
</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">EmitArrays::begin_inner</span><button class="popup" onclick="togglePopup('usagePopup21')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup21">Usage of <span class="code-font"><span class="function-syntax">EmitArrays::begin_inner</span></span>:<br/><a href="2-ea.html#SP2">&#167;2</a>, <a href="2-ea.html#SP3">&#167;3</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">N</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><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">unchecked</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">format</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">symb</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterNames::to_symbol</span><span class="plain-syntax">(</span><span class="identifier-syntax">N</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">nascent_array</span><span class="plain-syntax"> *</span><span class="identifier-syntax">current_A</span><span class="plain-syntax"> = </span><a href="2-ea.html#SP7" class="function-link"><span class="function-syntax">EmitArrays::push_new</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">entry_kind</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">unchecked</span><span class="plain-syntax">)?</span><span class="identifier-syntax">NULL:</span><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">?</span><span class="identifier-syntax">K:K_value</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">array_name_symbol</span><span class="plain-syntax"> = </span><span class="identifier-syntax">symb</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">array_form</span><span class="plain-syntax"> = </span><span class="identifier-syntax">format</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP9" class="paragraph-anchor"></a><b>&#167;9. </b>And the various ways to add an entry merge into this one:
</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">EmitArrays::entry_inner</span><button class="popup" onclick="togglePopup('usagePopup22')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup22">Usage of <span class="code-font"><span class="function-syntax">EmitArrays::entry_inner</span></span>:<br/><a href="2-ea.html#SP4">&#167;4</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_pair</span><span class="plain-syntax"> </span><span class="identifier-syntax">val</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">nascent_array</span><span class="plain-syntax"> *</span><span class="identifier-syntax">current_A</span><span class="plain-syntax"> = </span><a href="2-ea.html#SP6" class="function-link"><span class="function-syntax">EmitArrays::current</span></a><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">current_A</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no nascent array"</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">N</span><span class="plain-syntax"> = </span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">space_used</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">N</span><span class="plain-syntax"> &gt;= </span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">capacity</span><span class="plain-syntax">) </span><span class="named-paragraph-container code-font"><a href="2-ea.html#SP9_1" class="named-paragraph-link"><span class="named-paragraph">Quadruple the available storage</span><span class="named-paragraph-number">9.1</span></a></span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">entry_storage</span><span class="plain-syntax">[</span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">space_used</span><span class="plain-syntax">++] = </span><span class="identifier-syntax">val</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP9_1" class="paragraph-anchor"></a><b>&#167;9.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Quadruple the available storage</span><span class="named-paragraph-number">9.1</span></span><span class="comment-syntax"> =</span>
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">M</span><span class="plain-syntax"> = </span><span class="constant-syntax">4</span><span class="plain-syntax">*(</span><span class="identifier-syntax">N</span><span class="plain-syntax">+1);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">capacity</span><span class="plain-syntax"> == </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="identifier-syntax">M</span><span class="plain-syntax"> = </span><span class="constant-syntax">16</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_pair</span><span class="plain-syntax"> *</span><span class="identifier-syntax">old_storage</span><span class="plain-syntax"> = </span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">entry_storage</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">entry_storage</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Memory::calloc</span><span class="plain-syntax">(</span><span class="identifier-syntax">M</span><span class="plain-syntax">, </span><span class="reserved-syntax">sizeof</span><span class="plain-syntax">(</span><span class="identifier-syntax">inter_pair</span><span class="plain-syntax">), </span><span class="constant-syntax">EMIT_ARRAY_MREASON</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">i</span><span class="plain-syntax">=0; </span><span class="identifier-syntax">i</span><span class="function-syntax">&lt;current_A-&gt;</span><span class="element-syntax">capacity</span><span class="plain-syntax">; </span><span class="identifier-syntax">i</span><span class="plain-syntax">++) </span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">entry_storage</span><span class="plain-syntax">[</span><span class="identifier-syntax">i</span><span class="plain-syntax">] = </span><span class="identifier-syntax">old_storage</span><span class="plain-syntax">[</span><span class="identifier-syntax">i</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">old_storage</span><span class="plain-syntax">) </span><span class="identifier-syntax">Memory::I7_array_free</span><span class="plain-syntax">(</span><span class="identifier-syntax">old_storage</span><span class="plain-syntax">, </span><span class="constant-syntax">EMIT_ARRAY_MREASON</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">capacity</span><span class="plain-syntax">, </span><span class="reserved-syntax">sizeof</span><span class="plain-syntax">(</span><span class="identifier-syntax">inter_pair</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">capacity</span><span class="plain-syntax"> = </span><span class="identifier-syntax">M</span><span class="plain-syntax">;</span>
</pre>
<ul class="endnotetexts"><li>This code is used in <a href="2-ea.html#SP9">&#167;9</a>.</li></ul>
<p class="commentary firstcommentary"><a id="SP10" class="paragraph-anchor"></a><b>&#167;10. </b>There is just one way to end. This is the only point at which any Inter
bytecode is actually emitted, in a single burst, and that ensures that one array
is completely emitted before another one is.
</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">EmitArrays::end_inner</span><button class="popup" onclick="togglePopup('usagePopup23')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup23">Usage of <span class="code-font"><span class="function-syntax">EmitArrays::end_inner</span></span>:<br/><a href="2-ea.html#SP5">&#167;5</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">nascent_array</span><span class="plain-syntax"> *</span><span class="identifier-syntax">current_A</span><span class="plain-syntax"> = </span><a href="2-ea.html#SP7" class="function-link"><span class="function-syntax">EmitArrays::pull</span></a><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">current_A</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no nascent array"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">con_s</span><span class="plain-syntax"> = </span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">array_name_symbol</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><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">entry_kind</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">CID</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterTypes::to_TID</span><span class="plain-syntax">(</span><span class="identifier-syntax">InterBookmark::scope</span><span class="plain-syntax">(</span><a href="2-emt.html#SP1" class="function-link"><span class="function-syntax">Emit::at</span></a><span class="plain-syntax">()), </span><span class="identifier-syntax">InterTypes::unchecked</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">K</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">con_kind</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</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">ConstantInstruction::is_a_genuine_list_format</span><span class="plain-syntax">(</span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">array_form</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">con_kind</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Produce::kind_to_symbol</span><span class="plain-syntax">(</span><span class="identifier-syntax">Kinds::unary_con</span><span class="plain-syntax">(</span><span class="identifier-syntax">CON_list_of</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">else</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">con_kind</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Produce::kind_to_symbol</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">con_kind</span><span class="plain-syntax">) </span><span class="identifier-syntax">CID</span><span class="plain-syntax"> = </span><a href="2-emt.html#SP1" class="function-link"><span class="function-syntax">Emit::symbol_id</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">con_kind</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">array_in_progress</span><span class="plain-syntax"> =</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Inode::new_with_3_data_fields</span><span class="plain-syntax">(</span><a href="2-emt.html#SP1" class="function-link"><span class="function-syntax">Emit::at</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">CONSTANT_IST</span><span class="plain-syntax">, </span><a href="2-emt.html#SP1" class="function-link"><span class="function-syntax">Emit::symbol_id</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">con_s</span><span class="plain-syntax">), </span><span class="identifier-syntax">CID</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">array_form</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><a href="2-emt.html#SP1" class="function-link"><span class="function-syntax">Emit::baseline</span></a><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">pos</span><span class="plain-syntax"> = </span><span class="identifier-syntax">array_in_progress</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">W</span><span class="plain-syntax">.</span><span class="identifier-syntax">extent</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Inode::extend_instruction_by</span><span class="plain-syntax">(</span><span class="identifier-syntax">array_in_progress</span><span class="plain-syntax">, (</span><span class="reserved-syntax">unsigned</span><span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax">) (2*(</span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">space_used</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">i</span><span class="plain-syntax">=0; </span><span class="identifier-syntax">i</span><span class="function-syntax">&lt;current_A-&gt;</span><span class="element-syntax">space_used</span><span class="plain-syntax">; </span><span class="identifier-syntax">i</span><span class="plain-syntax">++, </span><span class="identifier-syntax">pos</span><span class="plain-syntax"> += </span><span class="constant-syntax">2</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">InterValuePairs::set</span><span class="plain-syntax">(</span><span class="identifier-syntax">array_in_progress</span><span class="plain-syntax">, </span><span class="identifier-syntax">pos</span><span class="plain-syntax">, </span><span class="identifier-syntax">current_A</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">entry_storage</span><span class="plain-syntax">[</span><span class="identifier-syntax">i</span><span class="plain-syntax">]);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::guard</span><span class="plain-syntax">(</span><span class="identifier-syntax">VerifyingInter::instruction</span><span class="plain-syntax">(</span>
<span class="plain-syntax"> </span><a href="2-emt.html#SP1" class="function-link"><span class="function-syntax">Emit::package</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">array_in_progress</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">NodePlacement::move_to_moving_bookmark</span><span class="plain-syntax">(</span><span class="identifier-syntax">array_in_progress</span><span class="plain-syntax">, </span><a href="2-emt.html#SP1" class="function-link"><span class="function-syntax">Emit::at</span></a><span class="plain-syntax">());</span>
<span class="plain-syntax">}</span>
</pre>
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