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<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../intern.html">Inter Modules</a></li><li><a href="index.html">bytecode</a></li><li><a href="index.html#2">Chapter 2: The Trees</a></li><li><b>Inter Nodes</b></li></ul></div>
<p class="purpose">To create nodes of inter code, and manage everything about them except their tree locations.</p>
<ul class="toc"><li><a href="2-in.html#SP1">&#167;1. Nodes</a></li><li><a href="2-in.html#SP6">&#167;6. The package and tree of a node</a></li><li><a href="2-in.html#SP7">&#167;7. Bytecode storage</a></li><li><a href="2-in.html#SP14">&#167;14. Interpreting values stored in bytecode</a></li><li><a href="2-in.html#SP15">&#167;15. Errors</a></li></ul><hr class="tocbar">
<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>&#167;1. Nodes. </b>It's essential to be able to walk an Inter tree quickly, while movements
of nodes within the tree are relatively uncommon. So we provide every
imaginable link. Suppose the structure is:
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> A</span>
<span class="plain-syntax"> B</span>
<span class="plain-syntax"> C</span>
<span class="plain-syntax"> D</span>
<span class="plain-syntax"> E</span>
</pre>
<p class="commentary">Then the links are:
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> of | A B C D E</span>
<span class="plain-syntax"> -------------+--------------------------------------</span>
<span class="plain-syntax"> parent | NULL A A C A</span>
<span class="plain-syntax"> first_child | B NULL D NULL NULL</span>
<span class="plain-syntax"> last_child | E NULL D NULL NULL</span>
<span class="plain-syntax"> previous | NULL NULL B NULL C</span>
<span class="plain-syntax"> next | NULL C E NULL NULL</span>
</pre>
<p class="commentary">Each node also knows the tree and the package it belongs to. We really aren't
concerned about memory consumption here. The Inter trees we deal with will be
large (typically 400,000 nodes), so on a 64-bit processor we might be looking
at 250 MB of memory here, and that can probably be doubled when the warehouse
memory consumption is also considered. But this is no longer prohibitive: speed
of access matters more.
</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">inter_tree_node</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">tree</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">package</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">parent_itn</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">first_child_itn</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">last_child_itn</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">previous_itn</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">next_itn</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">warehouse_floor_space</span><span class="plain-syntax"> </span><span class="identifier-syntax">W</span><span class="plain-syntax">;</span>
<span class="plain-syntax">} </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax">;</span>
</pre>
<ul class="endnotetexts"><li>The structure inter_tree_node is accessed in 2/it, 2/bkm, 2/np, 2/pck, 2/st, 2/trn, 3/ic, 3/iibf, 3/iitf, 3/vi, 3/ivp, 3/idt, 4/tcc, 4/tcc2, 4/tic, 4/tic2, 4/tpc, 4/tpc3, 4/tpc4, 4/tpc5, 4/tpc6, 4/ttc, 5/tac, 5/tcc, 5/tcc2, 5/tec, 5/tic, 5/trc2, 5/tsc and here.</li></ul>
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>&#167;2. </b>Do not call this directly in order to create a node.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::new_node</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">Inode::new_node</span></span>:<br/><a href="2-in.html#SP3">&#167;3</a>, <a href="2-in.html#SP5">&#167;5</a><br/>Inter in Binary Files - <a href="3-iibf.html#SP10_1_5">&#167;10.1.5</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_warehouse</span><span class="plain-syntax"> *</span><span class="identifier-syntax">warehouse</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_tree</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">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">n</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner</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">warehouse</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 warehouse"</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">I</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 tree supplied"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">warehouse_floor_space</span><span class="plain-syntax"> </span><span class="identifier-syntax">W</span><span class="plain-syntax"> = </span><a href="2-tw.html#SP15" class="function-link"><span class="function-syntax">InterWarehouse::make_floor_space</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">warehouse</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">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">itn</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">itn</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">tree</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">itn</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">package</span><span class="plain-syntax"> = </span><span class="identifier-syntax">owner</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">itn</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">parent_itn</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">itn</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">first_child_itn</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">itn</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">last_child_itn</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">itn</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">previous_itn</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">itn</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">next_itn</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">itn</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax"> = </span><span class="identifier-syntax">W</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">eloc</span><span class="plain-syntax">) </span><a href="2-in.html#SP9" class="function-link"><span class="function-syntax">Inode::attach_error_location</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">itn</span><span class="plain-syntax">, </span><span class="identifier-syntax">eloc</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">itn</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>Instead, call one of the following. This of course should be called once
only per tree, and is called by <a href="2-it.html#SP2" class="internal">InterTree::new</a> anyway.
</p>
<p class="commentary">The root node is meaningless, but in order that all nodes correspond to
instructions, we make it a <span class="extract"><span class="extract-syntax">NOP_IST</span></span>. This is not really part of the program,
though.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::new_root_node</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">Inode::new_root_node</span></span>:<br/>Inter Trees - <a href="2-it.html#SP2_1">&#167;2.1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_warehouse</span><span class="plain-syntax"> *</span><span class="identifier-syntax">warehouse</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_tree</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">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax"> = </span><a href="2-in.html#SP2" class="function-link"><span class="function-syntax">Inode::new_node</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">warehouse</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="constant-syntax">2</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">ID_IFLD</span><span class="plain-syntax">] = (</span><span class="constant-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="constant-syntax">NOP_IST</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">LEVEL_IFLD</span><span class="plain-syntax">] = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">P</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. </b>More generally: the content of a node is an instruction stored as bytecode
in memory. (Perhaps wordcode would be more accurate: it's a series of words.)
Words 0 and 1 have the same meaning for all instructions; everything from 2
onwards is data whose meaning differs between instructions. (Indeed, some
instructions have no data at all, and thus occupy only 2 words.)
</p>
<p class="commentary">The ID is an enumeration of <span class="extract"><span class="extract-syntax">*_IST</span></span>: it marks which instruction this is.
</p>
<p class="commentary">The level is the depth of this node in the tree, where the root node is 0,
its children are level 1, their children level 2, and so on.
</p>
<pre class="definitions code-font"><span class="definition-keyword">define</span> <span class="constant-syntax">ID_IFLD</span><span class="plain-syntax"> </span><span class="constant-syntax">0</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">LEVEL_IFLD</span><span class="plain-syntax"> </span><span class="constant-syntax">1</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> </span><span class="constant-syntax">2</span>
</pre>
<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>&#167;5. </b>These functions should be called only by the creator functions for the
Inter instructions. Code which is generating Inter to do something should not
call those creator functions, not these.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::new_with_0_data_fields</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">Inode::new_with_0_data_fields</span></span>:<br/>The Nop Construct - <a href="4-tnc.html#SP2">&#167;2</a><br/>The Code Construct - <a href="5-tcc2.html#SP2">&#167;2</a><br/>The Evaluation Construct - <a href="5-tec.html#SP2">&#167;2</a><br/>The Reference Construct - <a href="5-trc2.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">S</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">level</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax"> = </span><a href="2-bkm.html#SP7" class="function-link"><span class="function-syntax">InterBookmark::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax"> = </span><a href="2-in.html#SP2" class="function-link"><span class="function-syntax">Inode::new_node</span></a><span class="plain-syntax">(</span><a href="2-it.html#SP3" class="function-link"><span class="function-syntax">InterTree::warehouse</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</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">eloc</span><span class="plain-syntax">, </span><a href="2-bkm.html#SP6" class="function-link"><span class="function-syntax">InterBookmark::package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">ID_IFLD</span><span class="plain-syntax">] = (</span><span class="constant-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">S</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">LEVEL_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">level</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">P</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::new_with_1_data_field</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">Inode::new_with_1_data_field</span></span>:<br/>Transmigration - <a href="2-trn.html#SP4_2_1_1">&#167;4.2.1.1</a><br/>The Comment Construct - <a href="4-tcc.html#SP2">&#167;2</a><br/>The PackageType Construct - <a href="4-tpc2.html#SP2">&#167;2</a><br/>The Assembly Construct - <a href="5-tac.html#SP2">&#167;2</a><br/>The Lab Construct - <a href="5-tlc.html#SP2">&#167;2</a><br/>The Label Construct - <a href="5-tlc2.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">S</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">level</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax"> = </span><a href="2-bkm.html#SP7" class="function-link"><span class="function-syntax">InterBookmark::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax"> = </span><a href="2-in.html#SP2" class="function-link"><span class="function-syntax">Inode::new_node</span></a><span class="plain-syntax">(</span><a href="2-it.html#SP3" class="function-link"><span class="function-syntax">InterTree::warehouse</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="constant-syntax">3</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><a href="2-bkm.html#SP6" class="function-link"><span class="function-syntax">InterBookmark::package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">ID_IFLD</span><span class="plain-syntax">] = (</span><span class="constant-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">S</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">LEVEL_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">level</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V</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">P</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::new_with_2_data_fields</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">Inode::new_with_2_data_fields</span></span>:<br/>Transmigration - <a href="2-trn.html#SP4_1_1">&#167;4.1.1</a><br/>The Pragma Construct - <a href="4-tpc4.html#SP2">&#167;2</a><br/>The Primitive Construct - <a href="4-tpc5.html#SP2">&#167;2</a><br/>The Cast Construct - <a href="5-tcc.html#SP2">&#167;2</a><br/>The Inv Construct - <a href="5-tic.html#SP3">&#167;3</a><br/>The Local Construct - <a href="5-tlc3.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">S</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V1</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V2</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">level</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax"> = </span><a href="2-bkm.html#SP7" class="function-link"><span class="function-syntax">InterBookmark::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax"> = </span><a href="2-in.html#SP2" class="function-link"><span class="function-syntax">Inode::new_node</span></a><span class="plain-syntax">(</span><a href="2-it.html#SP3" class="function-link"><span class="function-syntax">InterTree::warehouse</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="constant-syntax">4</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><a href="2-bkm.html#SP6" class="function-link"><span class="function-syntax">InterBookmark::package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">ID_IFLD</span><span class="plain-syntax">] = (</span><span class="constant-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">S</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">LEVEL_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">level</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V1</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">1</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V2</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">P</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::new_with_3_data_fields</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">Inode::new_with_3_data_fields</span></span>:<br/>The Constant Construct - <a href="4-tcc2.html#SP4">&#167;4</a><br/>The Permission Construct - <a href="4-tpc3.html#SP2">&#167;2</a><br/>The Property Construct - <a href="4-tpc6.html#SP2">&#167;2</a><br/>The Ref Construct - <a href="5-trc.html#SP2">&#167;2</a><br/>The Val Construct - <a href="5-tvc.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">S</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V1</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V2</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V3</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">level</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax"> = </span><a href="2-bkm.html#SP7" class="function-link"><span class="function-syntax">InterBookmark::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax"> = </span><a href="2-in.html#SP2" class="function-link"><span class="function-syntax">Inode::new_node</span></a><span class="plain-syntax">(</span><a href="2-it.html#SP3" class="function-link"><span class="function-syntax">InterTree::warehouse</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="constant-syntax">5</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><a href="2-bkm.html#SP6" class="function-link"><span class="function-syntax">InterBookmark::package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">ID_IFLD</span><span class="plain-syntax">] = (</span><span class="constant-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">S</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">LEVEL_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">level</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V1</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">1</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V2</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">2</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V3</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">P</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::new_with_4_data_fields</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">Inode::new_with_4_data_fields</span></span>:<br/>The Insert Construct - <a href="4-tic.html#SP2">&#167;2</a><br/>The PropertyValue Construct - <a href="4-tpc7.html#SP2">&#167;2</a><br/>The Variable Construct - <a href="4-tvc.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">S</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V1</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V2</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V3</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V4</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="identifier-syntax">eloc</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">level</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax"> = </span><a href="2-bkm.html#SP7" class="function-link"><span class="function-syntax">InterBookmark::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax"> = </span><a href="2-in.html#SP2" class="function-link"><span class="function-syntax">Inode::new_node</span></a><span class="plain-syntax">(</span><a href="2-it.html#SP3" class="function-link"><span class="function-syntax">InterTree::warehouse</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="constant-syntax">6</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><a href="2-bkm.html#SP6" class="function-link"><span class="function-syntax">InterBookmark::package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">ID_IFLD</span><span class="plain-syntax">] = (</span><span class="constant-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">S</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">LEVEL_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">level</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V1</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">1</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V2</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">2</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V3</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">3</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V4</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">P</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::new_with_5_data_fields</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">Inode::new_with_5_data_fields</span></span>:<br/>The Constant Construct - <a href="4-tcc2.html#SP2">&#167;2</a><br/>The Package Construct - <a href="4-tpc.html#SP4">&#167;4</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">S</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V1</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V2</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V3</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V4</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V5</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">level</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax"> = </span><a href="2-bkm.html#SP7" class="function-link"><span class="function-syntax">InterBookmark::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax"> = </span><a href="2-in.html#SP2" class="function-link"><span class="function-syntax">Inode::new_node</span></a><span class="plain-syntax">(</span><a href="2-it.html#SP3" class="function-link"><span class="function-syntax">InterTree::warehouse</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="constant-syntax">7</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><a href="2-bkm.html#SP6" class="function-link"><span class="function-syntax">InterBookmark::package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">ID_IFLD</span><span class="plain-syntax">] = (</span><span class="constant-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">S</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">LEVEL_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">level</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V1</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">1</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V2</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">2</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V3</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">3</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V4</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">4</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V5</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">P</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::new_with_6_data_fields</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">Inode::new_with_6_data_fields</span></span>:<br/>The Instance Construct - <a href="4-tic2.html#SP2">&#167;2</a><br/>The Splat Construct - <a href="5-tsc.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">S</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V1</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V2</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V3</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V4</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V5</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V6</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">level</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax"> = </span><a href="2-bkm.html#SP7" class="function-link"><span class="function-syntax">InterBookmark::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax"> = </span><a href="2-in.html#SP2" class="function-link"><span class="function-syntax">Inode::new_node</span></a><span class="plain-syntax">(</span><a href="2-it.html#SP3" class="function-link"><span class="function-syntax">InterTree::warehouse</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="constant-syntax">8</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><a href="2-bkm.html#SP6" class="function-link"><span class="function-syntax">InterBookmark::package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">ID_IFLD</span><span class="plain-syntax">] = (</span><span class="constant-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">S</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">LEVEL_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">level</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V1</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">1</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V2</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">2</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V3</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">3</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V4</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">4</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V5</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">5</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V6</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">P</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::new_with_7_data_fields</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">Inode::new_with_7_data_fields</span></span>:<br/>The Typename Construct - <a href="4-ttc.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">S</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V1</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V2</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V3</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V4</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V5</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V6</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V7</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">level</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax"> = </span><a href="2-bkm.html#SP7" class="function-link"><span class="function-syntax">InterBookmark::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax"> = </span><a href="2-in.html#SP2" class="function-link"><span class="function-syntax">Inode::new_node</span></a><span class="plain-syntax">(</span><a href="2-it.html#SP3" class="function-link"><span class="function-syntax">InterTree::warehouse</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="constant-syntax">9</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><a href="2-bkm.html#SP6" class="function-link"><span class="function-syntax">InterBookmark::package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">ID_IFLD</span><span class="plain-syntax">] = (</span><span class="constant-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">S</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">LEVEL_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">level</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V1</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">1</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V2</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">2</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V3</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">3</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V4</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">4</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V5</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">5</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V6</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">6</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V7</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">P</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::new_with_8_data_fields</span><span class="plain-syntax">(</span><span class="reserved-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">S</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V1</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V2</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V3</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V4</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V5</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V6</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V7</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V8</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">level</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax"> = </span><a href="2-bkm.html#SP7" class="function-link"><span class="function-syntax">InterBookmark::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax"> = </span><a href="2-in.html#SP2" class="function-link"><span class="function-syntax">Inode::new_node</span></a><span class="plain-syntax">(</span><a href="2-it.html#SP3" class="function-link"><span class="function-syntax">InterTree::warehouse</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="constant-syntax">10</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><a href="2-bkm.html#SP6" class="function-link"><span class="function-syntax">InterBookmark::package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">ID_IFLD</span><span class="plain-syntax">] = (</span><span class="constant-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">S</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">LEVEL_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">level</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V1</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">1</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V2</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">2</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V3</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">3</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V4</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">4</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V5</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">5</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V6</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">6</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V7</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">7</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V8</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">P</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. The package and tree of a node. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::get_package</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">Inode::get_package</span></span>:<br/>Packages - <a href="2-pck.html#SP12">&#167;12</a><br/>Inter Constructs - <a href="3-ic.html#SP7">&#167;7</a><br/>Inter in Binary Files - <a href="3-iibf.html#SP10_1_5_1_1">&#167;10.1.5.1.1</a><br/>Inter Data Types - <a href="3-idt.html#SP14">&#167;14</a><br/>The Constant Construct - <a href="4-tcc2.html#SP8">&#167;8</a><br/>The Instance Construct - <a href="4-tic2.html#SP3">&#167;3</a><br/>The PropertyValue Construct - <a href="4-tpc7.html#SP3">&#167;3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">F</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">package</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>
<span class="reserved-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::tree</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">Inode::tree</span></span>:<br/><a href="2-in.html#SP9">&#167;9</a><br/>Packages - <a href="2-pck.html#SP8">&#167;8</a><br/>Inter Constructs - <a href="3-ic.html#SP17">&#167;17</a><br/>Inter in Text Files - <a href="3-iitf.html#SP12">&#167;12</a><br/>Verifying Inter - <a href="3-vi.html#SP7">&#167;7</a>, <a href="3-vi.html#SP8">&#167;8</a>, <a href="3-vi.html#SP9">&#167;9</a>, <a href="3-vi.html#SP10">&#167;10</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">F</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">tree</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>
<span class="reserved-syntax">inter_symbols_table</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::globals</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">Inode::globals</span></span>:<br/>Packages - <a href="2-pck.html#SP12">&#167;12</a><br/>Symbols Tables - <a href="2-st.html#SP14">&#167;14</a><br/>Verifying Inter - <a href="3-vi.html#SP1_2">&#167;1.2</a>, <a href="3-vi.html#SP2">&#167;2</a>, <a href="3-vi.html#SP3">&#167;3</a>, <a href="3-vi.html#SP4">&#167;4</a><br/>Inter Value Pairs - <a href="3-ivp.html#SP22">&#167;22</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">F</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-it.html#SP3" class="function-link"><span class="function-syntax">InterTree::global_scope</span></a><span class="plain-syntax">(</span><a href="2-in.html#SP6" class="function-link"><span class="function-syntax">Inode::tree</span></a><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">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">inter_warehouse</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::warehouse</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">Inode::warehouse</span></span>:<br/><a href="2-in.html#SP14">&#167;14</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">F</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</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><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">in_room</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">owning_warehouse</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>&#167;7. Bytecode storage. </b>Each node represents one instruction, which is encoded with a contiguous
block of bytecode. That bytecode is not stored in the <a href="2-in.html#SP1" class="internal">inter_tree_node</a>
structure, but in warehouse memory.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax">......+------+-----------------+----+-------+-------------+........</span>
<span class="plain-syntax"> | Skip | Origin/Verified | ID | Level | Data |</span>
<span class="plain-syntax">......+------+-----------------+----+-------+-------------+........</span>
<span class="plain-syntax"> &lt;----------------------&gt; &lt;------------------------&gt;</span>
<span class="plain-syntax"> Preframe Frame</span>
</pre>
<p class="commentary">This stretch of memory is divided into a "preframe" and a "frame": the frame
holds the words of data described above, with position 0 being the ID, and
so on. Unlike the frame, the preframe data is not part of the instruction, and
is not saved out when Inter is stored in a binary file.
</p>
<p class="commentary">The frame is of variable size, depending on the instruction (and in
some cases its particular content: a constant definition for a list can be
almost any length). But the preframe is of fixed size:
</p>
<pre class="definitions code-font"><span class="definition-keyword">define</span> <span class="constant-syntax">PREFRAME_SIZE</span><span class="plain-syntax"> </span><span class="constant-syntax">2</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">PREFRAME_SKIP_AMOUNT</span><span class="plain-syntax"> </span><span class="constant-syntax">0</span>
<span class="definition-keyword">define</span> <span class="constant-syntax">PREFRAME_ORIGIN_AND_VFLAG</span><span class="plain-syntax"> </span><span class="constant-syntax">1</span>
</pre>
<p class="commentary firstcommentary"><a id="SP8" class="paragraph-anchor"></a><b>&#167;8. </b><span class="extract"><span class="extract-syntax">PREFRAME_SKIP_AMOUNT</span></span> is the offset (in words) to the next instruction.
Since the preframe has fixed length, this is both the offset from one preframe
to the next and also from one frame to the next.
</p>
<p class="commentary firstcommentary"><a id="SP9" class="paragraph-anchor"></a><b>&#167;9. </b><span class="extract"><span class="extract-syntax">PREFRAME_ORIGIN_AND_VFLAG</span></span> contains two unrelated pieces of data. One is bit 31,
which is set if the instruction in the frame has been verified, and is otherwise
clear.
</p>
<p class="commentary">The other, in bits 0-30, allows the origin of the instruction, in source code,
to be preserved: for example, to show that this came from line 14 of a file
called <span class="extract"><span class="extract-syntax">whatever.intert</span></span>. It is 0 if no origin is recorded; it is used only
for better reporting of any errors which arise. For how the location is
actually encoded in the word, see <a href="2-tw.html" class="internal">The Warehouse</a>.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::get_error_location</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">Inode::get_error_location</span></span>:<br/><a href="2-in.html#SP15">&#167;15</a><br/>Inter Constructs - <a href="3-ic.html#SP7">&#167;7</a><br/>Inter Value Pairs - <a href="3-ivp.html#SP22_2">&#167;22.2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">F</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</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><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">L</span><span class="plain-syntax"> = (</span><a href="2-in.html#SP11" class="function-link"><span class="function-syntax">Inode::get_preframe</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="constant-syntax">PREFRAME_ORIGIN_AND_VFLAG</span><span class="plain-syntax">)) &amp; </span><span class="constant-syntax">0x7fffffff</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-it.html#SP14" class="function-link"><span class="function-syntax">InterTree::origin_word_to_eloc</span></a><span class="plain-syntax">(</span><a href="2-in.html#SP6" class="function-link"><span class="function-syntax">Inode::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">), </span><span class="identifier-syntax">L</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">Inode::attach_error_location</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">Inode::attach_error_location</span></span>:<br/><a href="2-in.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="identifier-syntax">eloc</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">val</span><span class="plain-syntax"> = </span><a href="2-it.html#SP12" class="function-link"><span class="function-syntax">InterTree::eloc_to_origin_word</span></a><span class="plain-syntax">(</span><a href="2-in.html#SP6" class="function-link"><span class="function-syntax">Inode::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">), </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><a href="2-in.html#SP11" class="function-link"><span class="function-syntax">Inode::get_preframe</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="constant-syntax">PREFRAME_ORIGIN_AND_VFLAG</span><span class="plain-syntax">)) &amp; </span><span class="constant-syntax">0x80000000</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">val</span><span class="plain-syntax"> |= </span><span class="constant-syntax">0x80000000</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><a href="2-in.html#SP11" class="function-link"><span class="function-syntax">Inode::set_preframe</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="constant-syntax">PREFRAME_ORIGIN_AND_VFLAG</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="SP10" class="paragraph-anchor"></a><b>&#167;10. </b>Note that the vflag can never be cleared, once set.
</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">Inode::get_vflag</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">Inode::get_vflag</span></span>:<br/>Verifying Inter - <a href="3-vi.html#SP1">&#167;1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</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><a href="2-in.html#SP11" class="function-link"><span class="function-syntax">Inode::get_preframe</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="constant-syntax">PREFRAME_ORIGIN_AND_VFLAG</span><span class="plain-syntax">)) &amp; </span><span class="constant-syntax">0x80000000</span><span class="plain-syntax">)?</span><span class="identifier-syntax">TRUE:FALSE</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">Inode::set_vflag</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">Inode::set_vflag</span></span>:<br/>Verifying Inter - <a href="3-vi.html#SP1">&#167;1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><a href="2-in.html#SP11" class="function-link"><span class="function-syntax">Inode::set_preframe</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="constant-syntax">PREFRAME_ORIGIN_AND_VFLAG</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> (</span><a href="2-in.html#SP11" class="function-link"><span class="function-syntax">Inode::get_preframe</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="constant-syntax">PREFRAME_ORIGIN_AND_VFLAG</span><span class="plain-syntax">)) | </span><span class="constant-syntax">0x80000000</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP11" class="paragraph-anchor"></a><b>&#167;11. </b>The following gets and sets from the preframe:
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="function-syntax">Inode::get_preframe</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">Inode::get_preframe</span></span>:<br/><a href="2-in.html#SP9">&#167;9</a>, <a href="2-in.html#SP10">&#167;10</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">at</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">F</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">in_room</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">bytecode</span><span class="plain-syntax">[</span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">index</span><span class="plain-syntax"> + </span><span class="identifier-syntax">at</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">Inode::set_preframe</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">Inode::set_preframe</span></span>:<br/><a href="2-in.html#SP9">&#167;9</a>, <a href="2-in.html#SP10">&#167;10</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">at</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">V</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">F</span><span class="plain-syntax">) </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">in_room</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">bytecode</span><span class="plain-syntax">[</span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">index</span><span class="plain-syntax"> + </span><span class="identifier-syntax">at</span><span class="plain-syntax">] = </span><span class="identifier-syntax">V</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP12" class="paragraph-anchor"></a><b>&#167;12. </b>As noted above, the size of the frame varies from instruction to instruction.
For most instructions, it's determined as soon as the inode is created &mdash; for
example, a <span class="extract"><span class="extract-syntax">PROPERTYVALUE_IST</span></span> is always of a fixed length, and it's created
already being that length, so that it doesn't need to be extended.
</p>
<p class="commentary">But just a few instructions are of variable length depending on what they are
doing &mdash; <span class="extract"><span class="extract-syntax">CONSTANT_IST</span></span>, for example. Those are created at their minimum
length and then extended as needed.
</p>
<p class="commentary">Note that <span class="extract"><span class="extract-syntax">by</span></span> is unsigned, so cannot be negative: the bytecode can extend
but not contract.
</p>
<p class="commentary">All of this extension happens only during the process of creating the
instruction: once that's done, it never changes in length again. Because of
this, we can only build one instruction at a time.
</p>
<p class="commentary">Note that this function always succeeds, because an internal error is thrown
if the system is out of memory.
</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">Inode::extend_instruction_by</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">Inode::extend_instruction_by</span></span>:<br/>Transmigration - <a href="2-trn.html#SP4_1_1">&#167;4.1.1</a><br/>The Constant Construct - <a href="4-tcc2.html#SP4">&#167;4</a><br/>The Primitive Construct - <a href="4-tpc5.html#SP2">&#167;2</a><br/>The Typename Construct - <a href="4-ttc.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">by</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">by</span><span class="plain-syntax"> &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax"> = </span><a href="2-tw.html#SP16" class="function-link"><span class="function-syntax">InterWarehouse::enlarge_floor_space</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">, </span><span class="identifier-syntax">by</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP13" class="paragraph-anchor"></a><b>&#167;13. </b>Every instruction has its identity and a level:
</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">Inode::is</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">Inode::is</span></span>:<br/>Inter Trees - <a href="2-it.html#SP7">&#167;7</a>, <a href="2-it.html#SP8">&#167;8</a>, <a href="2-it.html#SP9">&#167;9</a><br/>Packages - <a href="2-pck.html#SP11">&#167;11</a><br/>Symbols - <a href="2-sym.html#SP17">&#167;17</a><br/>Transmigration - <a href="2-trn.html#SP3_1">&#167;3.1</a>, <a href="2-trn.html#SP4">&#167;4</a>, <a href="2-trn.html#SP5">&#167;5</a><br/>Inter Constructs - <a href="3-ic.html#SP7">&#167;7</a>, <a href="3-ic.html#SP19">&#167;19</a><br/>The Constant Construct - <a href="4-tcc2.html#SP8">&#167;8</a>, <a href="4-tcc2.html#SP9">&#167;9</a>, <a href="4-tcc2.html#SP10">&#167;10</a>, <a href="4-tcc2.html#SP11">&#167;11</a><br/>The Instance Construct - <a href="4-tic2.html#SP6">&#167;6</a><br/>The Package Construct - <a href="4-tpc.html#SP10">&#167;10</a>, <a href="4-tpc.html#SP11">&#167;11</a><br/>The Typename Construct - <a href="4-ttc.html#SP10">&#167;10</a><br/>The Inv Construct - <a href="5-tic.html#SP9">&#167;9</a>, <a href="5-tic.html#SP10">&#167;10</a><br/>The Reference Construct - <a href="5-trc2.html#SP6">&#167;6</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">construct_ID</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">P</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">ID_IFLD</span><span class="plain-syntax">] == </span><span class="identifier-syntax">construct_ID</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">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">Inode::isnt</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">Inode::isnt</span></span>:<br/>Inter Trees - <a href="2-it.html#SP7">&#167;7</a>, <a href="2-it.html#SP8">&#167;8</a><br/>Inter in Text Files - <a href="3-iitf.html#SP5_2">&#167;5.2</a><br/>Verifying Inter - <a href="3-vi.html#SP2">&#167;2</a>, <a href="3-vi.html#SP3">&#167;3</a>, <a href="3-vi.html#SP4">&#167;4</a><br/>The Constant Construct - <a href="4-tcc2.html#SP8">&#167;8</a><br/>The Insert Construct - <a href="4-tic.html#SP6">&#167;6</a><br/>The Instance Construct - <a href="4-tic2.html#SP6">&#167;6</a><br/>The Package Construct - <a href="4-tpc.html#SP9">&#167;9</a><br/>The Permission Construct - <a href="4-tpc3.html#SP6">&#167;6</a><br/>The Pragma Construct - <a href="4-tpc4.html#SP6">&#167;6</a><br/>The Primitive Construct - <a href="4-tpc5.html#SP8">&#167;8</a><br/>The Property Construct - <a href="4-tpc6.html#SP6">&#167;6</a><br/>The PropertyValue Construct - <a href="4-tpc7.html#SP4">&#167;4</a>, <a href="4-tpc7.html#SP6">&#167;6</a><br/>The Typename Construct - <a href="4-ttc.html#SP6">&#167;6</a><br/>The Variable Construct - <a href="4-tvc.html#SP6">&#167;6</a><br/>The Lab Construct - <a href="5-tlc.html#SP6">&#167;6</a><br/>The Label Construct - <a href="5-tlc2.html#SP6">&#167;6</a><br/>The Local Construct - <a href="5-tlc3.html#SP6">&#167;6</a><br/>The Ref Construct - <a href="5-trc.html#SP6">&#167;6</a><br/>The Splat Construct - <a href="5-tsc.html#SP6">&#167;6</a><br/>The Val Construct - <a href="5-tvc.html#SP6">&#167;6</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">construct_ID</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">P</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">ID_IFLD</span><span class="plain-syntax">] == </span><span class="identifier-syntax">construct_ID</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">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="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="function-syntax">Inode::get_construct_ID</span><button class="popup" onclick="togglePopup('usagePopup24')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup24">Usage of <span class="code-font"><span class="function-syntax">Inode::get_construct_ID</span></span>:<br/>Inter Constructs - <a href="3-ic.html#SP14">&#167;14</a><br/>Inter in Text Files - <a href="3-iitf.html#SP5_2">&#167;5.2</a><br/>Verifying Inter - <a href="3-vi.html#SP2">&#167;2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">P</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">ID_IFLD</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">Inode::get_level</span><button class="popup" onclick="togglePopup('usagePopup25')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup25">Usage of <span class="code-font"><span class="function-syntax">Inode::get_level</span></span>:<br/>Node Placement - <a href="2-np.html#SP3_1">&#167;3.1</a><br/>Packages - <a href="2-pck.html#SP6">&#167;6</a><br/>Inter Constructs - <a href="3-ic.html#SP7">&#167;7</a>, <a href="3-ic.html#SP17">&#167;17</a>, <a href="3-ic.html#SP19">&#167;19</a><br/>The Package Construct - <a href="4-tpc.html#SP8">&#167;8</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">P</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> (</span><span class="reserved-syntax">int</span><span class="plain-syntax">) </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">LEVEL_IFLD</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">Inode::set_level</span><button class="popup" onclick="togglePopup('usagePopup26')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup26">Usage of <span class="code-font"><span class="function-syntax">Inode::set_level</span></span>:<br/>Node Placement - <a href="2-np.html#SP4">&#167;4</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">L</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">P</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 node"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">LEVEL_IFLD</span><span class="plain-syntax">] = (</span><span class="constant-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">L</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP14" class="paragraph-anchor"></a><b>&#167;14. Interpreting values stored in bytecode. </b>The data stored in the fields above may represent strings, symbols and the like,
but it's just stored in what amounts to an array of unsigned integers: what is
stored is just an ID representing one of those things. The conversion from an ID
to the actual resource it represents depends on:
</p>
<ul class="items"><li>(a) What it is meant to be (symbols table, text, package, ...) &mdash; there is no
indication in the bytecode as to which that is, so we need to know what we're
looking for, e.g. that what is in position 3 is a text;
</li><li>(b) Which node the value came from &mdash; because these depend on the warehouse
where data is stored (and some nodes are in different warehouses than others),
and sometimes also on the local symbols table (which depends on the package
we are in, which in turn depends on the node).
</li></ul>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">inter_symbols_table</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::ID_to_symbols_table</span><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">ID</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-tw.html#SP8" class="function-link"><span class="function-syntax">InterWarehouse::get_symbols_table</span></a><span class="plain-syntax">(</span><a href="2-in.html#SP6" class="function-link"><span class="function-syntax">Inode::warehouse</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">), </span><span class="identifier-syntax">ID</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
<span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::ID_to_text</span><button class="popup" onclick="togglePopup('usagePopup27')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup27">Usage of <span class="code-font"><span class="function-syntax">Inode::ID_to_text</span></span>:<br/>Annotations - <a href="2-ann.html#SP14">&#167;14</a><br/>The Comment Construct - <a href="4-tcc.html#SP5">&#167;5</a><br/>The Insert Construct - <a href="4-tic.html#SP6">&#167;6</a><br/>The Pragma Construct - <a href="4-tpc4.html#SP6">&#167;6</a><br/>The Inv Construct - <a href="5-tic.html#SP8">&#167;8</a>, <a href="5-tic.html#SP9">&#167;9</a><br/>The Splat Construct - <a href="5-tsc.html#SP6">&#167;6</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">ID</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-tw.html#SP7" class="function-link"><span class="function-syntax">InterWarehouse::get_text</span></a><span class="plain-syntax">(</span><a href="2-in.html#SP6" class="function-link"><span class="function-syntax">Inode::warehouse</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">), </span><span class="identifier-syntax">ID</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::ID_to_package</span><button class="popup" onclick="togglePopup('usagePopup28')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup28">Usage of <span class="code-font"><span class="function-syntax">Inode::ID_to_package</span></span>:<br/>The Package Construct - <a href="4-tpc.html#SP5">&#167;5</a>, <a href="4-tpc.html#SP9">&#167;9</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">ID</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">ID</span><span class="plain-syntax"> == </span><span class="constant-syntax">0</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><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-tw.html#SP9" class="function-link"><span class="function-syntax">InterWarehouse::get_package</span></a><span class="plain-syntax">(</span><a href="2-in.html#SP6" class="function-link"><span class="function-syntax">Inode::warehouse</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">), </span><span class="identifier-syntax">ID</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">inter_node_list</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::ID_to_frame_list</span><button class="popup" onclick="togglePopup('usagePopup29')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup29">Usage of <span class="code-font"><span class="function-syntax">Inode::ID_to_frame_list</span></span>:<br/>The Instance Construct - <a href="4-tic2.html#SP6">&#167;6</a><br/>The Permission Construct - <a href="4-tpc3.html#SP3">&#167;3</a><br/>The Typename Construct - <a href="4-ttc.html#SP6">&#167;6</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="constant-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><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-tw.html#SP10" class="function-link"><span class="function-syntax">InterWarehouse::get_node_list</span></a><span class="plain-syntax">(</span><a href="2-in.html#SP6" class="function-link"><span class="function-syntax">Inode::warehouse</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">), </span><span class="identifier-syntax">N</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP15" class="paragraph-anchor"></a><b>&#167;15. Errors. </b>Suppose we want to generate an error message for malformed Inter code, and
to identify it as occurring at a particular node. We can get one thus:
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="function-syntax">Inode::error</span><button class="popup" onclick="togglePopup('usagePopup30')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup30">Usage of <span class="code-font"><span class="function-syntax">Inode::error</span></span>:<br/>Inter Constructs - <a href="3-ic.html#SP14">&#167;14</a>, <a href="3-ic.html#SP17">&#167;17</a><br/>Verifying Inter - <a href="3-vi.html#SP1_1">&#167;1.1</a>, <a href="3-vi.html#SP1_2">&#167;1.2</a>, <a href="3-vi.html#SP1_2_1">&#167;1.2.1</a>, <a href="3-vi.html#SP1_2_2">&#167;1.2.2</a>, <a href="3-vi.html#SP2">&#167;2</a>, <a href="3-vi.html#SP3">&#167;3</a>, <a href="3-vi.html#SP4">&#167;4</a>, <a href="3-vi.html#SP5">&#167;5</a>, <a href="3-vi.html#SP7">&#167;7</a>, <a href="3-vi.html#SP8">&#167;8</a>, <a href="3-vi.html#SP9">&#167;9</a>, <a href="3-vi.html#SP10">&#167;10</a><br/>Inter Value Pairs - <a href="3-ivp.html#SP22">&#167;22</a>, <a href="3-ivp.html#SP22_1">&#167;22.1</a>, <a href="3-ivp.html#SP22_2">&#167;22.2</a><br/>The Constant Construct - <a href="4-tcc2.html#SP5">&#167;5</a><br/>The Instance Construct - <a href="4-tic2.html#SP3">&#167;3</a><br/>The Package Construct - <a href="4-tpc.html#SP5">&#167;5</a><br/>The Permission Construct - <a href="4-tpc3.html#SP3">&#167;3</a><br/>The Primitive Construct - <a href="4-tpc5.html#SP3">&#167;3</a><br/>The PropertyValue Construct - <a href="4-tpc7.html#SP3">&#167;3</a><br/>The Typename Construct - <a href="4-ttc.html#SP3">&#167;3</a><br/>The Assembly Construct - <a href="5-tac.html#SP3">&#167;3</a><br/>The Cast Construct - <a href="5-tcc.html#SP3">&#167;3</a><br/>The Code Construct - <a href="5-tcc2.html#SP3">&#167;3</a><br/>The Evaluation Construct - <a href="5-tec.html#SP3">&#167;3</a><br/>The Inv Construct - <a href="5-tic.html#SP4">&#167;4</a>, <a href="5-tic.html#SP5">&#167;5</a>, <a href="5-tic.html#SP5_2">&#167;5.2</a>, <a href="5-tic.html#SP5_3">&#167;5.3</a><br/>The Lab Construct - <a href="5-tlc.html#SP3">&#167;3</a><br/>The Label Construct - <a href="5-tlc2.html#SP3">&#167;3</a><br/>The Reference Construct - <a href="5-trc2.html#SP3">&#167;3</a><br/>The Splat Construct - <a href="5-tsc.html#SP3">&#167;3</a><br/>The Plug Construct - <a href="6-tpc.html#SP1">&#167;1</a><br/>The Socket Construct - <a href="6-tsc.html#SP1">&#167;1</a><br/>The Version Construct - <a href="6-tvc.html#SP1">&#167;1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">err</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">quote</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="identifier-syntax">iem</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">inter_error_message</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="identifier-syntax">eloc</span><span class="plain-syntax"> = </span><a href="2-in.html#SP9" class="function-link"><span class="function-syntax">Inode::get_error_location</span></a><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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">eloc</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">iem</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">error_at</span><span class="plain-syntax"> = *</span><span class="identifier-syntax">eloc</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">iem</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">error_at</span><span class="plain-syntax"> = </span><a href="3-ie.html#SP2" class="function-link"><span class="function-syntax">InterErrors::file_location</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">iem</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">error_body</span><span class="plain-syntax"> = </span><span class="identifier-syntax">err</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">iem</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">error_quote</span><span class="plain-syntax"> = </span><span class="identifier-syntax">quote</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">iem</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
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