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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<title>Verifying Inter</title>
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<h1><a href="../index.html">
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</ul><h2>Compiler Webs</h2><ul>
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<li><a href="../inform7/index.html">inform7</a></li>
<li><a href="../inter/index.html">inter</a></li>
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</ul><h2>Inter Modules</h2><ul>
<li><a href="index.html"><span class="selectedlink">bytecode</span></a></li>
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</ul><h2>Shared Modules</h2><ul>
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<!--Weave of 'Verifying Inter' generated by 7-->
<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../compiler.html">Inter Modules</a></li><li><a href="index.html">bytecode</a></li><li><a href="index.html#3">Chapter 3: Language Definition</a></li><li><b>Verifying Inter</b></li></ul><p class="purpose">Verifying that a chunk of inter is correct and consistent.</p>
<p class="inwebparagraph"><a id="SP1"></a><b>&#167;1. </b></p>
<pre class="display">
<span class="reserved">inter_error_message</span><span class="plain"> *</span><span class="functiontext">Inter::Verify::defn<button class="popup" onclick="togglePopup('usagePopup268')">...<span class="popuptext" id="usagePopup268">Usage of <b>Inter::Verify::defn</b>:<br>The Metadata Construct - <a href="4-tmc.html#SP2">&#167;2</a><br>The PackageType Construct - <a href="4-tpc2.html#SP2">&#167;2</a><br>The Kind Construct - <a href="4-tkc.html#SP2">&#167;2</a><br>The Variable Construct - <a href="4-tvc2.html#SP2">&#167;2</a><br>The Constant Construct - <a href="4-tcc2.html#SP2">&#167;2</a><br>The Response Construct - <a href="4-trc.html#SP2">&#167;2</a><br>The Instance Construct - <a href="4-tic.html#SP2">&#167;2</a><br>The Property Construct - <a href="4-tpc4.html#SP2">&#167;2</a><br>The Permission Construct - <a href="4-tpc6.html#SP2">&#167;2</a><br>The Primitive Construct - <a href="4-tpc7.html#SP2">&#167;2</a></span></button></span><span class="plain">(</span><span class="reserved">inter_package</span><span class="plain"> *</span><span class="identifier">owner</span><span class="plain">, </span><span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">index</span><span class="plain">) {</span>
<span class="reserved">inter_symbols_table</span><span class="plain"> *</span><span class="identifier">T</span><span class="plain"> = </span><span class="functiontext"><a href="2-pck.html#SP3">Inter::Packages::scope</a></span><span class="plain">(</span><span class="identifier">owner</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">T</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="identifier">T</span><span class="plain"> = </span><span class="functiontext"><a href="2-in.html#SP3">Inter::Node::globals</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">);</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">S</span><span class="plain"> = </span><span class="functiontext"><a href="2-st.html#SP6">Inter::SymbolsTables::unequated_symbol_from_id</a></span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-&gt;</span><span class="element">W</span><span class="plain">.</span><span class="element">data</span><span class="plain">[</span><span class="identifier">index</span><span class="plain">]);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"no symbol for ID (case 1)"</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-&gt;</span><span class="element">equated_to</span><span class="plain">) {</span>
<span class="identifier">LOG</span><span class="plain">(</span><span class="string">"This is $6 but $3 equates to $3 in $6\n"</span><span class="plain">,</span>
<span class="functiontext"><a href="2-pck.html#SP3">Inter::Packages::container</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">), </span><span class="identifier">S</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-&gt;</span><span class="element">equated_to</span><span class="plain">, </span><span class="functiontext"><a href="2-pck.html#SP3">Inter::Packages::container</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-&gt;</span><span class="element">equated_to</span><span class="plain">-&gt;</span><span class="element">definition</span><span class="plain">));</span>
<span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"symbol defined outside its native scope"</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-&gt;</span><span class="element">symbol_name</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">D</span><span class="plain"> = </span><span class="functiontext"><a href="2-sym.html#SP4">Inter::Symbols::definition</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">D</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="functiontext"><a href="2-sym.html#SP4">Inter::Symbols::define</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">);</span>
<span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext"><a href="2-in.html#SP3">Inter::Node::eq</a></span><span class="plain">(</span><span class="identifier">D</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">) == </span><span class="identifier">FALSE</span><span class="plain">) {</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_predeclared</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">)) {</span>
<span class="functiontext"><a href="2-sym.html#SP4">Inter::Symbols::define</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">);</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"duplicated symbol"</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-&gt;</span><span class="element">symbol_name</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="reserved">inter_error_message</span><span class="plain"> *</span><span class="functiontext">Inter::Verify::local_defn<button class="popup" onclick="togglePopup('usagePopup269')">...<span class="popuptext" id="usagePopup269">Usage of <b>Inter::Verify::local_defn</b>:<br>The Label Construct - <a href="5-tlc.html#SP2">&#167;2</a><br>The Local Construct - <a href="5-tlc2.html#SP2">&#167;2</a></span></button></span><span class="plain">(</span><span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">index</span><span class="plain">, </span><span class="reserved">inter_symbols_table</span><span class="plain"> *</span><span class="identifier">T</span><span class="plain">) {</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">S</span><span class="plain"> = </span><span class="functiontext"><a href="2-st.html#SP6">Inter::SymbolsTables::symbol_from_id</a></span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-&gt;</span><span class="element">W</span><span class="plain">.</span><span class="element">data</span><span class="plain">[</span><span class="identifier">index</span><span class="plain">]);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"no symbol for ID (case 2)"</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> ((</span><span class="functiontext"><a href="2-sym.html#SP4">Inter::Symbols::is_defined</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">)) &amp;&amp;</span>
<span class="plain">(</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_predeclared_local</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">) == </span><span class="identifier">FALSE</span><span class="plain">))</span>
<span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"duplicated local symbol"</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-&gt;</span><span class="element">symbol_name</span><span class="plain">);</span>
<span class="functiontext"><a href="2-sym.html#SP4">Inter::Symbols::define</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">);</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="reserved">inter_error_message</span><span class="plain"> *</span><span class="functiontext">Inter::Verify::symbol<button class="popup" onclick="togglePopup('usagePopup270')">...<span class="popuptext" id="usagePopup270">Usage of <b>Inter::Verify::symbol</b>:<br>The Kind Construct - <a href="4-tkc.html#SP2">&#167;2</a><br>The DefaultValue Construct - <a href="4-tdc.html#SP2">&#167;2</a><br>The Variable Construct - <a href="4-tvc2.html#SP2">&#167;2</a><br>The Constant Construct - <a href="4-tcc2.html#SP2">&#167;2</a><br>The Instance Construct - <a href="4-tic.html#SP2">&#167;2</a><br>The Property Construct - <a href="4-tpc4.html#SP2">&#167;2</a><br>The PropertyValue Construct - <a href="4-tpc5.html#SP2">&#167;2</a><br>The Permission Construct - <a href="4-tpc6.html#SP2">&#167;2</a><br>The Local Construct - <a href="5-tlc2.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><br>The Cast Construct - <a href="5-tcc2.html#SP2">&#167;2</a></span></button></span><span class="plain">(</span><span class="reserved">inter_package</span><span class="plain"> *</span><span class="identifier">owner</span><span class="plain">, </span><span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">, </span><span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">ID</span><span class="plain">, </span><span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">construct</span><span class="plain">) {</span>
<span class="reserved">inter_symbols_table</span><span class="plain"> *</span><span class="identifier">T</span><span class="plain"> = </span><span class="functiontext"><a href="2-pck.html#SP3">Inter::Packages::scope</a></span><span class="plain">(</span><span class="identifier">owner</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">T</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="identifier">T</span><span class="plain"> = </span><span class="functiontext"><a href="2-in.html#SP3">Inter::Node::globals</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">);</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">S</span><span class="plain"> = </span><span class="functiontext"><a href="2-st.html#SP6">Inter::SymbolsTables::symbol_from_id</a></span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">ID</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"no symbol for ID (case 3)"</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
<span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">D</span><span class="plain"> = </span><span class="functiontext"><a href="2-sym.html#SP4">Inter::Symbols::definition</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_extern</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_predeclared</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">D</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"undefined symbol"</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-&gt;</span><span class="element">symbol_name</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">D</span><span class="plain">-&gt;</span><span class="element">W</span><span class="plain">.</span><span class="identifier">data</span><span class="plain">[</span><span class="constant">ID_IFLD</span><span class="plain">] != </span><span class="identifier">construct</span><span class="plain">) &amp;&amp;</span>
<span class="plain">(</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_extern</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">) == </span><span class="identifier">FALSE</span><span class="plain">) &amp;&amp;</span>
<span class="plain">(</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_predeclared</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">) == </span><span class="identifier">FALSE</span><span class="plain">)) {</span>
<span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"symbol of wrong type"</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-&gt;</span><span class="element">symbol_name</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="reserved">inter_error_message</span><span class="plain"> *</span><span class="functiontext">Inter::Verify::global_symbol<button class="popup" onclick="togglePopup('usagePopup271')">...<span class="popuptext" id="usagePopup271">Usage of <b>Inter::Verify::global_symbol</b>:<br>The Inv Construct - <a href="5-tic.html#SP2">&#167;2</a></span></button></span><span class="plain">(</span><span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">, </span><span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">ID</span><span class="plain">, </span><span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">construct</span><span class="plain">) {</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">S</span><span class="plain"> = </span><span class="functiontext"><a href="2-st.html#SP6">Inter::SymbolsTables::symbol_from_id</a></span><span class="plain">(</span><span class="functiontext"><a href="2-in.html#SP3">Inter::Node::globals</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">), </span><span class="identifier">ID</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) { </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"IO"</span><span class="plain">); </span><span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"3no symbol for ID"</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">); }</span>
<span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">D</span><span class="plain"> = </span><span class="functiontext"><a href="2-sym.html#SP4">Inter::Symbols::definition</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_extern</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_predeclared</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">D</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"undefined symbol"</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-&gt;</span><span class="element">symbol_name</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">D</span><span class="plain">-&gt;</span><span class="element">W</span><span class="plain">.</span><span class="identifier">data</span><span class="plain">[</span><span class="constant">ID_IFLD</span><span class="plain">] != </span><span class="identifier">construct</span><span class="plain">) &amp;&amp;</span>
<span class="plain">(</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_extern</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">) == </span><span class="identifier">FALSE</span><span class="plain">) &amp;&amp;</span>
<span class="plain">(</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_predeclared</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">) == </span><span class="identifier">FALSE</span><span class="plain">)) {</span>
<span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"symbol of wrong type"</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-&gt;</span><span class="element">symbol_name</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="reserved">inter_error_message</span><span class="plain"> *</span><span class="functiontext">Inter::Verify::local_symbol<button class="popup" onclick="togglePopup('usagePopup272')">...<span class="popuptext" id="usagePopup272">Usage of <b>Inter::Verify::local_symbol</b>:<br>none</span></button></span><span class="plain">(</span><span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">, </span><span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">ID</span><span class="plain">, </span><span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">construct</span><span class="plain">, </span><span class="reserved">inter_symbols_table</span><span class="plain"> *</span><span class="identifier">T</span><span class="plain">) {</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">S</span><span class="plain"> = </span><span class="functiontext"><a href="2-st.html#SP6">Inter::SymbolsTables::symbol_from_id</a></span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">ID</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"4no symbol for ID"</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
<span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">D</span><span class="plain"> = </span><span class="functiontext"><a href="2-sym.html#SP4">Inter::Symbols::definition</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_extern</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_predeclared</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">D</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"undefined symbol"</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-&gt;</span><span class="element">symbol_name</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">D</span><span class="plain">-&gt;</span><span class="element">W</span><span class="plain">.</span><span class="identifier">data</span><span class="plain">[</span><span class="constant">ID_IFLD</span><span class="plain">] != </span><span class="identifier">construct</span><span class="plain">) &amp;&amp;</span>
<span class="plain">(</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_extern</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">) == </span><span class="identifier">FALSE</span><span class="plain">) &amp;&amp;</span>
<span class="plain">(</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_predeclared</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">) == </span><span class="identifier">FALSE</span><span class="plain">)) {</span>
<span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"symbol of wrong type"</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-&gt;</span><span class="element">symbol_name</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="reserved">inter_error_message</span><span class="plain"> *</span><span class="functiontext">Inter::Verify::symbol_KOI<button class="popup" onclick="togglePopup('usagePopup273')">...<span class="popuptext" id="usagePopup273">Usage of <b>Inter::Verify::symbol_KOI</b>:<br>The PropertyValue Construct - <a href="4-tpc5.html#SP2">&#167;2</a><br>The Permission Construct - <a href="4-tpc6.html#SP2">&#167;2</a></span></button></span><span class="plain">(</span><span class="reserved">inter_package</span><span class="plain"> *</span><span class="identifier">owner</span><span class="plain">, </span><span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">, </span><span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">ID</span><span class="plain">) {</span>
<span class="reserved">inter_symbols_table</span><span class="plain"> *</span><span class="identifier">T</span><span class="plain"> = </span><span class="functiontext"><a href="2-pck.html#SP3">Inter::Packages::scope</a></span><span class="plain">(</span><span class="identifier">owner</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">T</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="identifier">T</span><span class="plain"> = </span><span class="functiontext"><a href="2-in.html#SP3">Inter::Node::globals</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">);</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">S</span><span class="plain"> = </span><span class="functiontext"><a href="2-st.html#SP6">Inter::SymbolsTables::symbol_from_id</a></span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">ID</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"5no symbol for ID"</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
<span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">D</span><span class="plain"> = </span><span class="functiontext"><a href="2-sym.html#SP4">Inter::Symbols::definition</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_extern</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_predeclared</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">D</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"undefined symbol"</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-&gt;</span><span class="element">symbol_name</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">D</span><span class="plain">-&gt;</span><span class="element">W</span><span class="plain">.</span><span class="identifier">data</span><span class="plain">[</span><span class="constant">ID_IFLD</span><span class="plain">] != </span><span class="constant">KIND_IST</span><span class="plain">) &amp;&amp;</span>
<span class="plain">(</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_extern</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">) == </span><span class="identifier">FALSE</span><span class="plain">) &amp;&amp;</span>
<span class="plain">(</span><span class="identifier">D</span><span class="plain">-&gt;</span><span class="element">W</span><span class="plain">.</span><span class="element">data</span><span class="plain">[</span><span class="constant">ID_IFLD</span><span class="plain">] != </span><span class="constant">INSTANCE_IST</span><span class="plain">) &amp;&amp;</span>
<span class="plain">(</span><span class="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_predeclared</a></span><span class="plain">(</span><span class="identifier">S</span><span class="plain">) == </span><span class="identifier">FALSE</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"symbol of wrong type"</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-&gt;</span><span class="element">symbol_name</span><span class="plain">);</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="reserved">inter_error_message</span><span class="plain"> *</span><span class="functiontext">Inter::Verify::data_type<button class="popup" onclick="togglePopup('usagePopup274')">...<span class="popuptext" id="usagePopup274">Usage of <b>Inter::Verify::data_type</b>:<br>The Kind Construct - <a href="4-tkc.html#SP2">&#167;2</a></span></button></span><span class="plain">(</span><span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">index</span><span class="plain">) {</span>
<span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">ID</span><span class="plain"> = </span><span class="identifier">P</span><span class="plain">-&gt;</span><span class="element">W</span><span class="plain">.</span><span class="element">data</span><span class="plain">[</span><span class="identifier">index</span><span class="plain">];</span>
<span class="reserved">inter_data_type</span><span class="plain"> *</span><span class="identifier">idt</span><span class="plain"> = </span><span class="functiontext"><a href="3-idt.html#SP2">Inter::Types::find_by_ID</a></span><span class="plain">(</span><span class="identifier">ID</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">idt</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"unknown data type"</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="reserved">inter_error_message</span><span class="plain"> *</span><span class="functiontext">Inter::Verify::value<button class="popup" onclick="togglePopup('usagePopup275')">...<span class="popuptext" id="usagePopup275">Usage of <b>Inter::Verify::value</b>:<br>The Constant Construct - <a href="4-tcc2.html#SP2">&#167;2</a><br>The Instance Construct - <a href="4-tic.html#SP2">&#167;2</a></span></button></span><span class="plain">(</span><span class="reserved">inter_package</span><span class="plain"> *</span><span class="identifier">owner</span><span class="plain">, </span><span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">index</span><span class="plain">, </span><span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">kind_symbol</span><span class="plain">) {</span>
<span class="reserved">inter_symbols_table</span><span class="plain"> *</span><span class="identifier">T</span><span class="plain"> = </span><span class="functiontext"><a href="2-pck.html#SP3">Inter::Packages::scope</a></span><span class="plain">(</span><span class="identifier">owner</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">T</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="identifier">T</span><span class="plain"> = </span><span class="functiontext"><a href="2-in.html#SP3">Inter::Node::globals</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">kind_symbol</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"unknown kind for value"</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
<span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">V1</span><span class="plain"> = </span><span class="identifier">P</span><span class="plain">-&gt;</span><span class="element">W</span><span class="plain">.</span><span class="element">data</span><span class="plain">[</span><span class="identifier">index</span><span class="plain">];</span>
<span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">V2</span><span class="plain"> = </span><span class="identifier">P</span><span class="plain">-&gt;</span><span class="element">W</span><span class="plain">.</span><span class="element">data</span><span class="plain">[</span><span class="identifier">index</span><span class="plain">+1];</span>
<span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="3-idt.html#SP2">Inter::Types::verify</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">kind_symbol</span><span class="plain">, </span><span class="identifier">V1</span><span class="plain">, </span><span class="identifier">V2</span><span class="plain">, </span><span class="identifier">T</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="reserved">inter_error_message</span><span class="plain"> *</span><span class="functiontext">Inter::Verify::local_value<button class="popup" onclick="togglePopup('usagePopup276')">...<span class="popuptext" id="usagePopup276">Usage of <b>Inter::Verify::local_value</b>:<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><span class="plain">(</span><span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">index</span><span class="plain">, </span><span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">kind_symbol</span><span class="plain">, </span><span class="reserved">inter_symbols_table</span><span class="plain"> *</span><span class="identifier">T</span><span class="plain">) {</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">kind_symbol</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="2-in.html#SP6">Inter::Node::error</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"unknown kind for value"</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
<span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">V1</span><span class="plain"> = </span><span class="identifier">P</span><span class="plain">-&gt;</span><span class="element">W</span><span class="plain">.</span><span class="element">data</span><span class="plain">[</span><span class="identifier">index</span><span class="plain">];</span>
<span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">V2</span><span class="plain"> = </span><span class="identifier">P</span><span class="plain">-&gt;</span><span class="element">W</span><span class="plain">.</span><span class="element">data</span><span class="plain">[</span><span class="identifier">index</span><span class="plain">+1];</span>
<span class="reserved">return</span><span class="plain"> </span><span class="functiontext"><a href="3-idt.html#SP2">Inter::Types::verify</a></span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">kind_symbol</span><span class="plain">, </span><span class="identifier">V1</span><span class="plain">, </span><span class="identifier">V2</span><span class="plain">, </span><span class="identifier">T</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Verify::writer<button class="popup" onclick="togglePopup('usagePopup277')">...<span class="popuptext" id="usagePopup277">Usage of <b>Inter::Verify::writer</b>:<br>Bytecode Module - <a href="1-bm.html#SP3_3">&#167;3.3</a></span></button></span><span class="plain">(</span><span class="identifier">OUTPUT_STREAM</span><span class="plain">, </span><span class="reserved">char</span><span class="plain"> *</span><span class="identifier">format_string</span><span class="plain">, </span><span class="reserved">void</span><span class="plain"> *</span><span class="identifier">vI</span><span class="plain">) {</span>
<span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">F</span><span class="plain"> = (</span><span class="reserved">inter_tree_node</span><span class="plain"> *) </span><span class="identifier">vI</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">F</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) { </span><span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"&lt;no frame&gt;"</span><span class="plain">); </span><span class="reserved">return</span><span class="plain">; }</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"%05d -&gt; "</span><span class="plain">, </span><span class="identifier">F</span><span class="plain">-&gt;</span><span class="element">W</span><span class="plain">.</span><span class="element">index</span><span class="plain">);</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"%d {"</span><span class="plain">, </span><span class="identifier">F</span><span class="plain">-&gt;</span><span class="element">W</span><span class="plain">.</span><span class="element">extent</span><span class="plain">);</span>
<span class="reserved">for</span><span class="plain"> (</span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">i</span><span class="plain">=0; </span><span class="identifier">i</span><span class="plain">&lt;</span><span class="identifier">F</span><span class="plain">-&gt;</span><span class="element">W</span><span class="plain">.</span><span class="element">extent</span><span class="plain">; </span><span class="identifier">i</span><span class="plain">++) </span><span class="identifier">WRITE</span><span class="plain">(</span><span class="string">" %08x"</span><span class="plain">, </span><span class="identifier">F</span><span class="plain">-&gt;</span><span class="element">W</span><span class="plain">.</span><span class="element">data</span><span class="plain">[</span><span class="identifier">i</span><span class="plain">]);</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">" }"</span><span class="plain">);</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
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