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<!--Weave of 'Jump Labels' 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">runtime</a></li><li><a href="index.html#4">Chapter 4: Compilation Utilities</a></li><li><b>Jump Labels</b></li></ul></div>
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<p class="purpose">I7 is has no Dijkstra-like conscience about compiling code which is full of |jump| statements, and these require labels to jump to. This section provides those labels, and other related unique-ID-number counters.</p>
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. </b>For clarity we give each label in the compiled code its own unique name
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(even though this is not strictly necessary since I6 labels have only local
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scope to their routines), and this means allowing for sets of labels with
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a unique ID number providing guaranteed-previously-unused new labels in
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every set.
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</p>
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<p class="commentary">So: each set of labels is identified with a name, and the labels written take
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the form <span class="extract"><span class="extract-syntax">L_NameNumber</span></span>. For instance, <span class="extract"><span class="extract-syntax">L_Marble17</span></span> is the 18th label in
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namespace <span class="extract"><span class="extract-syntax">Marble</span></span>. Every label namespace's name must differ from every
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other. It is legal for a namespace's name to be the empty string, which
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generates labels <span class="extract"><span class="extract-syntax">L_0</span></span>, <span class="extract"><span class="extract-syntax">L_1</span></span>, ...
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</p>
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<pre class="definitions code-font"><span class="definition-keyword">define</span> <span class="constant-syntax">MAX_NAMESPACE_PREFIX_LENGTH</span><span class="plain-syntax"> </span><span class="constant-syntax">20</span><span class="plain-syntax"> </span><span class="comment-syntax"> when </span><span class="extract"><span class="extract-syntax">L_</span></span><span class="comment-syntax"> and a number are added, we are within 31 chars</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">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">label_namespace</span><span class="plain-syntax"> {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">label_prefix</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">label_counter</span><span class="plain-syntax">; </span><span class="comment-syntax"> next free ID number for this label namespace</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">allocate_storage</span><span class="plain-syntax">; </span><span class="comment-syntax"> number of words of memory to reserve for each label</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">label_storage_iname</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">compilation_unit</span><span class="plain-syntax"> *</span><span class="identifier-syntax">module</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">CLASS_DEFINITION</span>
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<span class="plain-syntax">} </span><span class="reserved-syntax">label_namespace</span><span class="plain-syntax">;</span>
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</pre>
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<ul class="endnotetexts"><li>The structure label_namespace is private to this section.</li></ul>
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<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. </b>The creator for new label namespaces. Note that, by default, a label namespace
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reserves no memory.
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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">label_namespace</span><span class="plain-syntax"> *</span><span class="function-syntax">JumpLabels::new_namespace</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">JumpLabels::new_namespace</span></span>:<br/><a href="4-jl.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">name</span><span class="plain-syntax">, </span><span class="identifier-syntax">compilation_unit</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cm</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">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">) > </span><span class="constant-syntax">MAX_NAMESPACE_PREFIX_LENGTH</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> #</span><span class="identifier-syntax">ifdef</span><span class="plain-syntax"> </span><span class="identifier-syntax">CORE_MODULE</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">StandardProblems::sentence_problem</span><span class="plain-syntax">(</span><span class="identifier-syntax">Task::syntax_tree</span><span class="plain-syntax">(), </span><span class="identifier-syntax">_p_</span><span class="plain-syntax">(</span><span class="identifier-syntax">PM_LabelNamespaceTooLong</span><span class="plain-syntax">),</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"a label namespace prefix is too long"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"and should be shortened to a few alphabetic characters."</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> #</span><span class="identifier-syntax">endif</span>
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<span class="plain-syntax"> #</span><span class="identifier-syntax">ifndef</span><span class="plain-syntax"> </span><span class="identifier-syntax">CORE_MODULE</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"namespace prefix too long"</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> #</span><span class="identifier-syntax">endif</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">label_namespace</span><span class="plain-syntax"> *</span><span class="identifier-syntax">lns</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">label_namespace</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">lns</span><span class="plain-syntax">-></span><span class="element-syntax">label_prefix</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::duplicate</span><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">package_request</span><span class="plain-syntax"> *</span><span class="identifier-syntax">PR2</span><span class="plain-syntax"> = </span><a href="2-hrr.html#SP4" class="function-link"><span class="function-syntax">Hierarchy::synoptic_package</span></a><span class="plain-syntax">(</span><span class="constant-syntax">LABEL_STORAGES_HAP</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">lns</span><span class="plain-syntax">-></span><span class="element-syntax">label_storage_iname</span><span class="plain-syntax"> = </span><a href="2-hrr.html#SP4" class="function-link"><span class="function-syntax">Hierarchy::make_iname_in</span></a><span class="plain-syntax">(</span><span class="constant-syntax">LABEL_ASSOCIATED_STORAGE_HL</span><span class="plain-syntax">, </span><span class="identifier-syntax">PR2</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">lns</span><span class="plain-syntax">-></span><span class="element-syntax">label_counter</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">lns</span><span class="plain-syntax">-></span><span class="element-syntax">allocate_storage</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">lns</span><span class="plain-syntax">-></span><span class="element-syntax">module</span><span class="plain-syntax"> = </span><span class="identifier-syntax">cm</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">lns</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>§3. </b>The rest of Inform tends not to store pointers to namespaces: instead it
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must access them by searching on the name. This is inefficient, but there are
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few namespaces and it happens fairly seldom, so there is no point in
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optimising.
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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">label_namespace</span><span class="plain-syntax"> *</span><span class="function-syntax">JumpLabels::namespace_by_prefix</span><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">name</span><span class="plain-syntax">, </span><span class="identifier-syntax">compilation_unit</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cm</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">label_namespace</span><span class="plain-syntax"> *</span><span class="identifier-syntax">lns</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER</span><span class="plain-syntax">(</span><span class="identifier-syntax">lns</span><span class="plain-syntax">, </span><span class="reserved-syntax">label_namespace</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">lns</span><span class="plain-syntax">-></span><span class="element-syntax">module</span><span class="plain-syntax"> == </span><span class="identifier-syntax">cm</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">Str::eq</span><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">, </span><span class="identifier-syntax">lns</span><span class="plain-syntax">-></span><span class="element-syntax">label_prefix</span><span class="plain-syntax">)))</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">lns</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">label_namespace</span><span class="plain-syntax"> *</span><span class="function-syntax">JumpLabels::read_or_create_namespace</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">JumpLabels::read_or_create_namespace</span></span>:<br/><a href="4-jl.html#SP4">§4</a>, <a href="4-jl.html#SP5">§5</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">name</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">compilation_unit</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cm</span><span class="plain-syntax"> = </span><a href="2-cu.html#SP6" class="function-link"><span class="function-syntax">CompilationUnits::current</span></a><span class="plain-syntax">();</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">label_namespace</span><span class="plain-syntax"> *</span><span class="identifier-syntax">lns</span><span class="plain-syntax"> = </span><a href="4-jl.html#SP3" class="function-link"><span class="function-syntax">JumpLabels::namespace_by_prefix</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">, </span><span class="identifier-syntax">cm</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">lns</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">lns</span><span class="plain-syntax"> = </span><a href="4-jl.html#SP2" class="function-link"><span class="function-syntax">JumpLabels::new_namespace</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">, </span><span class="identifier-syntax">cm</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">lns</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP4" class="paragraph-anchor"></a><b>§4. </b>The rest of Inform is allowed only to call for a label in a given namespace,
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advancing the counter or not as it pleases; or to call for the current
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counter value.
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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">int</span><span class="plain-syntax"> </span><span class="function-syntax">JumpLabels::read_counter</span><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">namespace</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">advance_flag</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">label_namespace</span><span class="plain-syntax"> *</span><span class="identifier-syntax">lns</span><span class="plain-syntax"> = </span><a href="4-jl.html#SP3" class="function-link"><span class="function-syntax">JumpLabels::read_or_create_namespace</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">namespace</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">c</span><span class="plain-syntax"> = </span><span class="identifier-syntax">lns</span><span class="plain-syntax">-></span><span class="element-syntax">label_counter</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_flag</span><span class="plain-syntax"> == </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">) </span><span class="identifier-syntax">lns</span><span class="plain-syntax">-></span><span class="element-syntax">label_counter</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_flag</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">lns</span><span class="plain-syntax">-></span><span class="element-syntax">label_counter</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">lns</span><span class="plain-syntax">-></span><span class="element-syntax">label_counter</span><span class="plain-syntax"> < </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"label counter negative"</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="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">c</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">JumpLabels::write</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">namespace</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">label_namespace</span><span class="plain-syntax"> *</span><span class="identifier-syntax">lns</span><span class="plain-syntax"> = </span><a href="4-jl.html#SP3" class="function-link"><span class="function-syntax">JumpLabels::read_or_create_namespace</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">namespace</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"L_%S%d"</span><span class="plain-syntax">, </span><span class="identifier-syntax">lns</span><span class="plain-syntax">-></span><span class="element-syntax">label_prefix</span><span class="plain-syntax">, </span><span class="identifier-syntax">lns</span><span class="plain-syntax">-></span><span class="element-syntax">label_counter</span><span class="plain-syntax">);</span>
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<span class="plain-syntax">}</span>
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<span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="function-syntax">JumpLabels::storage</span><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">namespace</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">label_namespace</span><span class="plain-syntax"> *</span><span class="identifier-syntax">lns</span><span class="plain-syntax"> = </span><a href="4-jl.html#SP3" class="function-link"><span class="function-syntax">JumpLabels::read_or_create_namespace</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">namespace</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">lns</span><span class="plain-syntax">-></span><span class="element-syntax">label_storage_iname</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>§5. </b>It is possible to mark a namespace as requiring 1 or more words of storage.
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If so, the namespace <span class="extract"><span class="extract-syntax">Whatsit</span></span> makes a word array called <span class="extract"><span class="extract-syntax">I7_ST_Whatsit</span></span>
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which contains enough words for each label actually allocated to have that
|
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many words of storage. (And we add 2 words, to provide a safety margin, and
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because in the event of a namespace for which no labels are created, I6
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would otherwise throw an error at being asked to make an array with the
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specification <span class="extract"><span class="extract-syntax">--> 0</span></span>.)
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">JumpLabels::allocate_counter</span><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">namespace</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">multiplier</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">label_namespace</span><span class="plain-syntax"> *</span><span class="identifier-syntax">lns</span><span class="plain-syntax"> = </span><a href="4-jl.html#SP3" class="function-link"><span class="function-syntax">JumpLabels::read_or_create_namespace</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">namespace</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">multiplier</span><span class="plain-syntax"> > </span><span class="identifier-syntax">lns</span><span class="plain-syntax">-></span><span class="element-syntax">allocate_storage</span><span class="plain-syntax">) </span><span class="identifier-syntax">lns</span><span class="plain-syntax">-></span><span class="element-syntax">allocate_storage</span><span class="plain-syntax"> = </span><span class="identifier-syntax">multiplier</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">JumpLabels::compile_necessary_storage</span><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">label_namespace</span><span class="plain-syntax"> *</span><span class="identifier-syntax">lns</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER</span><span class="plain-syntax">(</span><span class="identifier-syntax">lns</span><span class="plain-syntax">, </span><span class="reserved-syntax">label_namespace</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">lns</span><span class="plain-syntax">-></span><span class="element-syntax">allocate_storage</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">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><a href="2-emt.html#SP3" class="function-link"><span class="function-syntax">Emit::named_array_begin</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">lns</span><span class="plain-syntax">-></span><span class="element-syntax">label_storage_iname</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_value</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">N</span><span class="plain-syntax"> = (</span><span class="identifier-syntax">lns</span><span class="plain-syntax">-></span><span class="element-syntax">allocate_storage</span><span class="plain-syntax">)*(</span><span class="identifier-syntax">lns</span><span class="plain-syntax">-></span><span class="element-syntax">label_counter</span><span class="plain-syntax">) + </span><span class="constant-syntax">2</span><span class="plain-syntax">;</span>
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|
<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="plain-syntax"><</span><span class="identifier-syntax">N</span><span class="plain-syntax">; </span><span class="identifier-syntax">i</span><span class="plain-syntax">++) </span><a href="2-emt.html#SP3" class="function-link"><span class="function-syntax">Emit::array_numeric_entry</span></a><span class="plain-syntax">(0);</span>
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<span class="plain-syntax"> </span><a href="2-emt.html#SP3" class="function-link"><span class="function-syntax">Emit::array_end</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">save</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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