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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<title>Stages</title>
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<main role="main">
<!--Weave of 'Stages' generated by Inweb-->
<div class="breadcrumbs">
<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../compiler.html">Inter Modules</a></li><li><a href="index.html">pipeline</a></li><li><a href="index.html#1">Chapter 1: Setting Up</a></li><li><b>Stages</b></li></ul></div>
<p class="purpose">To create the stages through which code generation proceeds.</p>
<ul class="toc"><li><a href="1-stg.html#SP1">&#167;1. Stages</a></li><li><a href="1-stg.html#SP2">&#167;2. Creation</a></li></ul><hr class="tocbar">
<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>&#167;1. Stages. </b>Each possible pipeline stage is represented by a single instance of the
following. Some stages are invoked with an argument, often the filename to
write output to; others are not.
</p>
<pre class="definitions code-font"><span class="definition-keyword">enum</span> <span class="constant-syntax">NO_STAGE_ARG</span><span class="plain-syntax"> </span><span class="identifier-syntax">from</span><span class="plain-syntax"> </span><span class="constant-syntax">1</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">GENERAL_STAGE_ARG</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">FILE_STAGE_ARG</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">TEXT_OUT_STAGE_ARG</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">EXT_FILE_STAGE_ARG</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">EXT_TEXT_OUT_STAGE_ARG</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">TEMPLATE_FILE_STAGE_ARG</span>
</pre>
<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">pipeline_stage</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">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stage_name</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">execute</span><span class="plain-syntax">)(</span><span class="reserved-syntax">void</span><span class="plain-syntax"> *);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">stage_arg</span><span class="plain-syntax">; </span><span class="comment-syntax"> one of the </span><span class="extract"><span class="extract-syntax">*_ARG</span></span><span class="comment-syntax"> values above</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">takes_repository</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">pipeline_stage</span><span class="plain-syntax">;</span>
<span class="reserved-syntax">pipeline_stage</span><span class="plain-syntax"> *</span><span class="function-syntax">CodeGen::Stage::new</span><button class="popup" onclick="togglePopup('usagePopup1')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup1">Usage of <span class="code-font"><span class="function-syntax">CodeGen::Stage::new</span></span>:<br/><a href="1-stg.html#SP2">&#167;2</a><br/>Architecture - <a href="1-arc.html#SP2">&#167;2</a><br/>Link Instructions - <a href="1-li.html#SP2">&#167;2</a><br/>Linker - <a href="2-mt.html#SP1">&#167;1</a><br/>Parse Linked Matter - <a href="2-plm.html#SP1">&#167;1</a><br/>Resolving Conditional Compilation - <a href="2-rcc.html#SP1">&#167;1</a><br/>Assimilate Linked Matter - <a href="2-ass.html#SP1">&#167;1</a><br/>Resolve External Symbols - <a href="2-res.html#SP1">&#167;1</a><br/>Inspect Plugs - <a href="2-ip.html#SP1">&#167;1</a><br/>Uniqueness - <a href="2-unq.html#SP1">&#167;1</a><br/>Reconcile Verbs - <a href="2-rv.html#SP1">&#167;1</a><br/>Eliminate Redundant Matter - <a href="2-erm.html#SP1">&#167;1</a><br/>Eliminate Redundant Labels - <a href="2-erl.html#SP1">&#167;1</a><br/>Eliminate Redundant Operations - <a href="2-ero.html#SP1">&#167;1</a><br/>Synoptic Utilities - <a href="3-su.html#SP1">&#167;1</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="reserved-syntax">int</span><span class="plain-syntax"> (*</span><span class="identifier-syntax">X</span><span class="plain-syntax">)(</span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">pipeline_step</span><span class="plain-syntax"> *), </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">arg</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">tr</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">pipeline_stage</span><span class="plain-syntax"> *</span><span class="identifier-syntax">stage</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">pipeline_stage</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">stage</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">stage_name</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>
<span class="plain-syntax"> </span><span class="identifier-syntax">stage</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">execute</span><span class="plain-syntax"> = (</span><span class="reserved-syntax">int</span><span class="plain-syntax"> (*)(</span><span class="reserved-syntax">void</span><span class="plain-syntax"> *)) </span><span class="identifier-syntax">X</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">stage</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">stage_arg</span><span class="plain-syntax"> = </span><span class="identifier-syntax">arg</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">stage</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">takes_repository</span><span class="plain-syntax"> = </span><span class="identifier-syntax">tr</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">stage</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<ul class="endnotetexts"><li>The structure pipeline_stage is accessed in 1/ppl and here.</li></ul>
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>&#167;2. Creation. </b>To add a new pipeline stage, put the code for it into a new section in
Chapter 2, and then add a call to its <span class="extract"><span class="extract-syntax">create_pipeline_stage</span></span> routine
to the routine below.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">stages_made</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">CodeGen::Stage::make_stages</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">CodeGen::Stage::make_stages</span></span>:<br/>Pipelines - <a href="1-ppl.html#SP3">&#167;3</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">stages_made</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">stages_made</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><a href="1-stg.html#SP1" class="function-link"><span class="function-syntax">CodeGen::Stage::new</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"stop"</span><span class="plain-syntax">, </span><a href="1-stg.html#SP3" class="function-link"><span class="function-syntax">CodeGen::Stage::run_stop_stage</span></a><span class="plain-syntax">, </span><span class="constant-syntax">NO_STAGE_ARG</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="1-stg.html#SP1" class="function-link"><span class="function-syntax">CodeGen::Stage::new</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"wipe"</span><span class="plain-syntax">, </span><a href="1-stg.html#SP3" class="function-link"><span class="function-syntax">CodeGen::Stage::run_wipe_stage</span></a><span class="plain-syntax">, </span><span class="constant-syntax">NO_STAGE_ARG</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="1-stg.html#SP1" class="function-link"><span class="function-syntax">CodeGen::Stage::new</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"read"</span><span class="plain-syntax">, </span><a href="1-stg.html#SP3" class="function-link"><span class="function-syntax">CodeGen::Stage::run_read_stage</span></a><span class="plain-syntax">, </span><span class="constant-syntax">FILE_STAGE_ARG</span><span class="plain-syntax">, </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="1-stg.html#SP1" class="function-link"><span class="function-syntax">CodeGen::Stage::new</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"move"</span><span class="plain-syntax">, </span><a href="1-stg.html#SP3" class="function-link"><span class="function-syntax">CodeGen::Stage::run_move_stage</span></a><span class="plain-syntax">, </span><span class="constant-syntax">GENERAL_STAGE_ARG</span><span class="plain-syntax">, </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">CodeGen::create_pipeline_stage</span><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><a href="1-arc.html#SP2" class="function-link"><span class="function-syntax">CodeGen::Architecture::create_pipeline_stage</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><a href="1-li.html#SP2" class="function-link"><span class="function-syntax">CodeGen::LinkInstructions::create_pipeline_stage</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><a href="2-ass.html#SP1" class="function-link"><span class="function-syntax">CodeGen::Assimilate::create_pipeline_stage</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><a href="2-erm.html#SP1" class="function-link"><span class="function-syntax">CodeGen::Eliminate::create_pipeline_stage</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><a href="2-res.html#SP1" class="function-link"><span class="function-syntax">CodeGen::Externals::create_pipeline_stage</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><a href="2-ip.html#SP1" class="function-link"><span class="function-syntax">CodeGen::Inspection::create_pipeline_stage</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><a href="2-erl.html#SP1" class="function-link"><span class="function-syntax">CodeGen::Labels::create_pipeline_stage</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><a href="2-ero.html#SP1" class="function-link"><span class="function-syntax">CodeGen::Operations::create_pipeline_stage</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><a href="3-su.html#SP1" class="function-link"><span class="function-syntax">Synoptic::create_pipeline_stage</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><a href="2-mt.html#SP1" class="function-link"><span class="function-syntax">CodeGen::MergeTemplate::create_pipeline_stage</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><a href="2-plm.html#SP1" class="function-link"><span class="function-syntax">CodeGen::PLM::create_pipeline_stage</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><a href="2-rcc.html#SP1" class="function-link"><span class="function-syntax">CodeGen::RCC::create_pipeline_stage</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><a href="2-rv.html#SP1" class="function-link"><span class="function-syntax">CodeGen::ReconcileVerbs::create_pipeline_stage</span></a><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><a href="2-unq.html#SP1" class="function-link"><span class="function-syntax">CodeGen::Uniqueness::create_pipeline_stage</span></a><span class="plain-syntax">();</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>The "stop" stage is special, in that it always returns false, thus stopping
the pipeline:
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">CodeGen::Stage::run_stop_stage</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">CodeGen::Stage::run_stop_stage</span></span>:<br/><a href="1-stg.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">pipeline_step</span><span class="plain-syntax"> *</span><span class="identifier-syntax">step</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">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">CodeGen::Stage::run_wipe_stage</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">CodeGen::Stage::run_wipe_stage</span></span>:<br/><a href="1-stg.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">pipeline_step</span><span class="plain-syntax"> *</span><span class="identifier-syntax">step</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Inter::Warehouse::wipe</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">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">CodeGen::Stage::run_read_stage</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">CodeGen::Stage::run_read_stage</span></span>:<br/><a href="1-stg.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">pipeline_step</span><span class="plain-syntax"> *</span><span class="identifier-syntax">step</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">filename</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax"> = </span><span class="identifier-syntax">step</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">parsed_filename</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">Inter::Binary::test_file</span><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">)) </span><span class="identifier-syntax">Inter::Binary::read</span><span class="plain-syntax">(</span><span class="identifier-syntax">step</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">repository</span><span class="plain-syntax">, </span><span class="identifier-syntax">F</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">Inter::Textual::read</span><span class="plain-syntax">(</span><span class="identifier-syntax">step</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">repository</span><span class="plain-syntax">, </span><span class="identifier-syntax">F</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">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">CodeGen::Stage::run_move_stage</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">CodeGen::Stage::run_move_stage</span></span>:<br/><a href="1-stg.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">pipeline_step</span><span class="plain-syntax"> *</span><span class="identifier-syntax">step</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">match_results</span><span class="plain-syntax"> </span><span class="identifier-syntax">mr</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Regexp::create_mr</span><span class="plain-syntax">();</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">pack</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">Regexp::match</span><span class="plain-syntax">(&amp;</span><span class="identifier-syntax">mr</span><span class="plain-syntax">, </span><span class="identifier-syntax">step</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">step_argument</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">"(%d):(%c+)"</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">from_rep</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::atoi</span><span class="plain-syntax">(</span><span class="identifier-syntax">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[0], </span><span class="constant-syntax">0</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">step</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">pipeline</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">repositories</span><span class="plain-syntax">[</span><span class="identifier-syntax">from_rep</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">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no such repository"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">pack</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Inter::Packages::by_url</span><span class="plain-syntax">(</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">step</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">pipeline</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">repositories</span><span class="plain-syntax">[</span><span class="identifier-syntax">from_rep</span><span class="plain-syntax">], </span><span class="identifier-syntax">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[1]);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Regexp::dispose_of</span><span class="plain-syntax">(&amp;</span><span class="identifier-syntax">mr</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">pack</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">"not a package"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Inter::Transmigration::move</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">Site::main_package</span><span class="plain-syntax">(</span><span class="identifier-syntax">step</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">repository</span><span class="plain-syntax">), </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
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