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<title>3/ie</title>
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<!--Weave of '4/tnc' generated by 7-->
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<ul class="crumbs"><li><a href="../webs.html">★</a></li><li><a href="index.html">inter</a></li><li><a href="index.html#4">Chapter 4: Void Constructs</a></li><li><b>The Nop Construct</b></li></ul><p class="purpose">Defining the nop construct.</p>
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<p class="inwebparagraph"><a id="SP1"></a><b>§1. </b></p>
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<pre class="definitions">
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<span class="definitionkeyword">enum</span> <span class="constant">NOP_IST</span>
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</pre>
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<pre class="display">
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<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Nop::define</span><span class="plain">(</span><span class="reserved">void</span><span class="plain">) {</span>
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<span class="reserved">inter_construct</span><span class="plain"> *</span><span class="identifier">IC</span><span class="plain"> = </span><span class="functiontext">Inter::Defn::create_construct</span><span class="plain">(</span>
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<span class="constant">NOP_IST</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">,</span>
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<span class="identifier">I</span><span class="string">"nop"</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"nops"</span><span class="plain">);</span>
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<span class="identifier">IC</span><span class="plain">-</span><span class="element">>usage_permissions</span><span class="plain"> = </span><span class="constant">OUTSIDE_OF_PACKAGES</span><span class="plain"> + </span><span class="constant">INSIDE_PLAIN_PACKAGE</span><span class="plain"> + </span><span class="constant">INSIDE_CODE_PACKAGE</span><span class="plain">;</span>
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<span class="identifier">METHOD_ADD</span><span class="plain">(</span><span class="identifier">IC</span><span class="plain">, </span><span class="constant">CONSTRUCT_WRITE_MTID</span><span class="plain">, </span><span class="functiontext">Inter::Nop::write</span><span class="plain">);</span>
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<span class="plain">}</span>
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<span class="reserved">inter_error_message</span><span class="plain"> *</span><span class="functiontext">Inter::Nop::new</span><span class="plain">(</span><span class="reserved">inter_bookmark</span><span class="plain"> *</span><span class="identifier">IBM</span><span class="plain">, </span><span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">level</span><span class="plain">, </span><span class="reserved">inter_error_location</span><span class="plain"> *</span><span class="identifier">eloc</span><span class="plain">) {</span>
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<span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain"> = </span><span class="functiontext">Inter::Node::fill_0</span><span class="plain">(</span><span class="identifier">IBM</span><span class="plain">, </span><span class="constant">NOP_IST</span><span class="plain">, </span><span class="identifier">eloc</span><span class="plain">, </span><span class="identifier">level</span><span class="plain">);</span>
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<span class="reserved">inter_error_message</span><span class="plain"> *</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext">Inter::Defn::verify_construct</span><span class="plain">(</span><span class="functiontext">Inter::Bookmarks::package</span><span class="plain">(</span><span class="identifier">IBM</span><span class="plain">), </span><span class="identifier">P</span><span class="plain">);</span>
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<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">E</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">E</span><span class="plain">;</span>
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<span class="functiontext">Inter::Bookmarks::insert</span><span class="plain">(</span><span class="identifier">IBM</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">);</span>
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<span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
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<span class="plain">}</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">The function Inter::Nop::define is used in 3/dfn (<a href="3-dfn.html#SP3">§3</a>).</p>
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<p class="endnote">The function Inter::Nop::new appears nowhere else.</p>
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<p class="inwebparagraph"><a id="SP2"></a><b>§2. </b>This in fact prints only in a stack backtrace, not in regular textual output,
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where any nop statements are simply ignored.
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</p>
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<pre class="display">
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<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Nop::write</span><span class="plain">(</span><span class="reserved">inter_construct</span><span class="plain"> *</span><span class="identifier">IC</span><span class="plain">, </span><span class="identifier">OUTPUT_STREAM</span><span class="plain">, </span><span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">, </span><span class="reserved">inter_error_message</span><span class="plain"> **</span><span class="identifier">E</span><span class="plain">) {</span>
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<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"nop"</span><span class="plain">);</span>
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<span class="plain">}</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">The function Inter::Nop::write is used in <a href="#SP1">§1</a>.</p>
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<hr class="tocbar">
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<ul class="toc"><li><i>(This section begins Chapter 4: Void Constructs.)</i></li><li><a href="4-tcc.html">Continue with 'The Comment Construct'</a></li></ul><hr class="tocbar">
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<!--End of weave-->
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