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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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<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#2">Chapter 2: Interoperability</a></li><li><b>Connectors</b></li></ul></div>
<p class="purpose">To manage link symbols.</p>
<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>&#167;1. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">unique_plug_number</span><span class="plain-syntax"> = </span><span class="constant-syntax">1</span><span class="plain-syntax">;</span>
<span class="reserved-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="function-syntax">Inter::Connectors::plug</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">Inter::Connectors::plug</span></span>:<br/>Transmigration - <a href="2-trn.html#SP3">&#167;3</a>, <a href="2-trn.html#SP3_3">&#167;3.3</a>, <a href="2-trn.html#SP4_1">&#167;4.1</a></span></button><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="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">wanted</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="identifier-syntax">connectors</span><span class="plain-syntax"> = </span><a href="2-cnn.html#SP1" class="function-link"><span class="function-syntax">Inter::Connectors::connectors_package</span></a><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">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">PN</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">PN</span><span class="plain-syntax">, </span><span class="string-syntax">"plug_%05d"</span><span class="plain-syntax">, </span><span class="identifier-syntax">unique_plug_number</span><span class="plain-syntax">++);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">plug</span><span class="plain-syntax"> = </span><a href="2-st.html#SP5" class="function-link"><span class="function-syntax">InterSymbolsTables::create_with_unique_name</span></a><span class="plain-syntax">(</span>
<span class="plain-syntax"> </span><a href="2-pck.html#SP3" class="function-link"><span class="function-syntax">Inter::Packages::scope</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">connectors</span><span class="plain-syntax">), </span><span class="identifier-syntax">PN</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">PN</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><a href="2-st.html#SP10" class="function-link"><span class="function-syntax">InterSymbolsTables::make_plug</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">plug</span><span class="plain-syntax">, </span><span class="identifier-syntax">wanted</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOGIF</span><span class="plain-syntax">(</span><span class="identifier-syntax">INTER_CONNECTORS</span><span class="plain-syntax">, </span><span class="string-syntax">"Plug I%d: $3 seeking %S\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">allocation_id</span><span class="plain-syntax">, </span><span class="identifier-syntax">plug</span><span class="plain-syntax">, </span><span class="identifier-syntax">plug</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">equated_name</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">plug</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="function-syntax">Inter::Connectors::socket</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">Inter::Connectors::socket</span></span>:<br/>Transmigration - <a href="2-trn.html#SP1">&#167;1</a></span></button><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="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">socket_name</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">wired_from</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="identifier-syntax">connectors</span><span class="plain-syntax"> = </span><a href="2-cnn.html#SP1" class="function-link"><span class="function-syntax">Inter::Connectors::connectors_package</span></a><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_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">socket</span><span class="plain-syntax"> = </span><a href="2-st.html#SP5" class="function-link"><span class="function-syntax">InterSymbolsTables::create_with_unique_name</span></a><span class="plain-syntax">(</span>
<span class="plain-syntax"> </span><a href="2-pck.html#SP3" class="function-link"><span class="function-syntax">Inter::Packages::scope</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">connectors</span><span class="plain-syntax">), </span><span class="identifier-syntax">socket_name</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-st.html#SP10" class="function-link"><span class="function-syntax">InterSymbolsTables::make_socket</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">socket</span><span class="plain-syntax">, </span><span class="identifier-syntax">wired_from</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOGIF</span><span class="plain-syntax">(</span><span class="identifier-syntax">INTER_CONNECTORS</span><span class="plain-syntax">, </span><span class="string-syntax">"Socket I%d: $3 wired to $3\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">allocation_id</span><span class="plain-syntax">, </span><span class="identifier-syntax">socket</span><span class="plain-syntax">, </span><span class="identifier-syntax">wired_from</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">socket</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">Inter::Connectors::connectors_package</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">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 for connectors"</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="identifier-syntax">connectors</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Site::connectors_package</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">connectors</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">connectors</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Site::make_linkage_package</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"connectors"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Site::set_connectors_package</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">connectors</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-pck.html#SP3" class="function-link"><span class="function-syntax">Inter::Packages::make_linklike</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">connectors</span><span class="plain-syntax">);</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">connectors</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="function-syntax">Inter::Connectors::find_socket</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">Inter::Connectors::find_socket</span></span>:<br/>Transmigration - <a href="2-trn.html#SP1">&#167;1</a></span></button><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="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">identifier</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="identifier-syntax">connectors</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Site::connectors_package</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">connectors</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">S</span><span class="plain-syntax"> = </span><a href="2-st.html#SP4" class="function-link"><span class="function-syntax">InterSymbolsTables::symbol_from_name_not_equating</span></a><span class="plain-syntax">(</span>
<span class="plain-syntax"> </span><a href="2-pck.html#SP3" class="function-link"><span class="function-syntax">Inter::Packages::scope</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">Site::connectors_package</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">)), </span><span class="identifier-syntax">identifier</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">S</span><span class="plain-syntax">) &amp;&amp; (</span><a href="2-sym.html#SP2" class="function-link"><span class="function-syntax">Inter::Symbols::get_scope</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">) == </span><span class="constant-syntax">SOCKET_ISYMS</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">S</span><span class="plain-syntax">;</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_symbol</span><span class="plain-syntax"> *</span><span class="function-syntax">Inter::Connectors::find_plug</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">Inter::Connectors::find_plug</span></span>:<br/>Transmigration - <a href="2-trn.html#SP3">&#167;3</a></span></button><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="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">identifier</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="identifier-syntax">connectors</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Site::connectors_package</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">connectors</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">S</span><span class="plain-syntax"> = </span><a href="2-st.html#SP4" class="function-link"><span class="function-syntax">InterSymbolsTables::symbol_from_name_not_equating</span></a><span class="plain-syntax">(</span>
<span class="plain-syntax"> </span><a href="2-pck.html#SP3" class="function-link"><span class="function-syntax">Inter::Packages::scope</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">Site::connectors_package</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">)), </span><span class="identifier-syntax">identifier</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">S</span><span class="plain-syntax">) &amp;&amp; (</span><a href="2-sym.html#SP2" class="function-link"><span class="function-syntax">Inter::Symbols::get_scope</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">) == </span><span class="constant-syntax">PLUG_ISYMS</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">S</span><span class="plain-syntax">;</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">void</span><span class="plain-syntax"> </span><span class="function-syntax">Inter::Connectors::wire_plug</span><span class="plain-syntax">(</span><span class="reserved-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">plug</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">to</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">plug</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 plug"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOGIF</span><span class="plain-syntax">(</span><span class="identifier-syntax">INTER_CONNECTORS</span><span class="plain-syntax">, </span><span class="string-syntax">"Plug $3 wired to $3\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">plug</span><span class="plain-syntax">, </span><span class="identifier-syntax">to</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-st.html#SP10" class="function-link"><span class="function-syntax">InterSymbolsTables::equate</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">plug</span><span class="plain-syntax">, </span><span class="identifier-syntax">to</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">Inter::Connectors::stecker</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_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">Q</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Site::connectors_package</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Q</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="plain-syntax"> </span><span class="reserved-syntax">inter_symbols_table</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ST</span><span class="plain-syntax"> = </span><a href="2-pck.html#SP3" class="function-link"><span class="function-syntax">Inter::Packages::scope</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">Q</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">i</span><span class="plain-syntax">=0; </span><span class="identifier-syntax">i</span><span class="function-syntax">&lt;ST-&gt;</span><span class="element-syntax">size</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_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">plug</span><span class="plain-syntax"> = </span><span class="identifier-syntax">ST</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">symbol_array</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">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">plug</span><span class="plain-syntax">) &amp;&amp; (</span><a href="2-sym.html#SP2" class="function-link"><span class="function-syntax">Inter::Symbols::get_scope</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">plug</span><span class="plain-syntax">) == </span><span class="constant-syntax">PLUG_ISYMS</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">plug</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">equated_to</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_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">socket</span><span class="plain-syntax"> = </span><a href="2-cnn.html#SP1" class="function-link"><span class="function-syntax">Inter::Connectors::find_socket</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">plug</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">equated_name</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">socket</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><a href="2-cnn.html#SP1" class="function-link"><span class="function-syntax">Inter::Connectors::wire_plug</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">plug</span><span class="plain-syntax">, </span><span class="identifier-syntax">socket</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">plug</span><span class="plain-syntax">-&gt;</span><span class="element-syntax">equated_name</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax">}</span>
</pre>
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