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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Inter in Text Files</title>
<meta name="viewport" content="width=device-width initial-scale=1">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="Content-Language" content="en-gb">
<link href="../inweb.css" rel="stylesheet" rev="stylesheet" type="text/css">
</head>
<body>
<nav role="navigation">
<h1><a href="../index.html">
<img src="../docs-src/Figures/Inform.png" height=72">
</a></h1>
<ul><li><a href="../compiler.html">compiler tools</a></li>
<li><a href="../other.html">other tools</a></li>
<li><a href="../extensions.html">extensions and kits</a></li>
<li><a href="../units.html">unit test tools</a></li>
</ul><h2>Compiler Webs</h2><ul>
<li><a href="../inbuild/index.html">inbuild</a></li>
<li><a href="../inform7/index.html">inform7</a></li>
<li><a href="../inter/index.html">inter</a></li>
</ul><h2>Inbuild Modules</h2><ul>
<li><a href="../supervisor-module/index.html">supervisor</a></li>
</ul><h2>Inform7 Modules</h2><ul>
<li><a href="../core-module/index.html">core</a></li>
<li><a href="../inflections-module/index.html">inflections</a></li>
<li><a href="../linguistics-module/index.html">linguistics</a></li>
<li><a href="../kinds-module/index.html">kinds</a></li>
<li><a href="../if-module/index.html">if</a></li>
<li><a href="../multimedia-module/index.html">multimedia</a></li>
<li><a href="../problems-module/index.html">problems</a></li>
<li><a href="../index-module/index.html">index</a></li>
</ul><h2>Inter Modules</h2><ul>
<li><a href="index.html"><span class="selectedlink">bytecode</span></a></li>
<li><a href="../building-module/index.html">building</a></li>
<li><a href="../codegen-module/index.html">codegen</a></li>
</ul><h2>Shared Modules</h2><ul>
<li><a href="../arch-module/index.html">arch</a></li>
<li><a href="../syntax-module/index.html">syntax</a></li>
<li><a href="../words-module/index.html">words</a></li>
<li><a href="../html-module/index.html">html</a></li>
<li><a href="../../../inweb/docs/foundation-module/index.html">foundation</a></li>
</ul>
</nav>
<main role="main">
<!--Weave of 'Inter in Text Files' 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>Inter in Text Files</b></li></ul><p class="purpose">To read inter from a textual file.</p>
<ul class="toc"><li><a href="#SP1">&#167;1. Reading textual inter</a></li><li><a href="#SP2">&#167;2. Writing textual inter</a></li></ul><hr class="tocbar">
<p class="inwebparagraph"><a id="SP1"></a><b>&#167;1. Reading textual inter. </b></p>
<pre class="display">
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">no_blank_lines_stacked</span><span class="plain"> = </span><span class="constant">0</span><span class="plain">;</span>
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Textual::read<button class="popup" onclick="togglePopup('usagePopup257')">...<span class="popuptext" id="usagePopup257">Usage of <b>Inter::Textual::read</b>:<br>none</span></button></span><span class="plain">(</span><span class="reserved">inter_tree</span><span class="plain"> *</span><span class="identifier">I</span><span class="plain">, </span><span class="identifier">filename</span><span class="plain"> *</span><span class="identifier">F</span><span class="plain">) {</span>
<span class="identifier">LOGIF</span><span class="plain">(</span><span class="identifier">INTER_FILE_READ</span><span class="plain">, </span><span class="string">"(Reading textual inter file %f)\n"</span><span class="plain">, </span><span class="identifier">F</span><span class="plain">);</span>
<span class="identifier">default_ptree</span><span class="plain"> = </span><span class="identifier">I</span><span class="plain">;</span>
<span class="identifier">no_blank_lines_stacked</span><span class="plain"> = </span><span class="constant">0</span><span class="plain">;</span>
<span class="reserved">inter_bookmark</span><span class="plain"> </span><span class="identifier">IBM</span><span class="plain"> = </span><span class="functiontext"><a href="2-bkm.html#SP1">Inter::Bookmarks::at_start_of_this_repository</a></span><span class="plain">(</span><span class="identifier">I</span><span class="plain">);</span>
<span class="reserved">inter_error_location</span><span class="plain"> </span><span class="identifier">eloc</span><span class="plain"> = </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::file_location</a></span><span class="plain">(</span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
<span class="identifier">TextFiles::read</span><span class="plain">(</span><span class="identifier">F</span><span class="plain">, </span><span class="identifier">FALSE</span><span class="plain">, </span><span class="string">"can't open inter file"</span><span class="plain">, </span><span class="identifier">FALSE</span><span class="plain">, </span><span class="functiontext"><a href="#SP1">Inter::Textual::read_line</a></span><span class="plain">, </span><span class="constant">0</span><span class="plain">, &amp;</span><span class="identifier">IBM</span><span class="plain">);</span>
<span class="functiontext"><a href="2-st.html#SP10">Inter::SymbolsTables::resolve_forward_references</a></span><span class="plain">(</span><span class="identifier">I</span><span class="plain">, &amp;</span><span class="identifier">eloc</span><span class="plain">);</span>
<span class="identifier">default_ptree</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="functiontext"><a href="2-it.html#SP5">Inter::Tree::traverse</a></span><span class="plain">(</span><span class="identifier">I</span><span class="plain">, </span><span class="functiontext"><a href="#SP1">Inter::Textual::lint_visitor</a></span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, -</span><span class="constant">PACKAGE_IST</span><span class="plain">);</span>
<span class="identifier">Primitives::scan_tree</span><span class="plain">(</span><span class="identifier">I</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Textual::lint_visitor<button class="popup" onclick="togglePopup('usagePopup258')">...<span class="popuptext" id="usagePopup258">Usage of <b>Inter::Textual::lint_visitor</b>:<br>none</span></button></span><span class="plain">(</span><span class="reserved">inter_tree</span><span class="plain"> *</span><span class="identifier">I</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">void</span><span class="plain"> *</span><span class="identifier">state</span><span class="plain">) {</span>
<span class="reserved">inter_error_message</span><span class="plain"> *</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext"><a href="3-dfn.html#SP4">Inter::Defn::verify_children_inner</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">E</span><span class="plain">) </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::issue</a></span><span class="plain">(</span><span class="identifier">E</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="functiontext">Inter::Textual::new_symbol<button class="popup" onclick="togglePopup('usagePopup259')">...<span class="popuptext" id="usagePopup259">Usage of <b>Inter::Textual::new_symbol</b>:<br>The Metadata Construct - <a href="4-tmc.html#SP2">&#167;2</a><br>The Symbol Construct - <a href="4-tsc.html#SP1">&#167;1</a><br>The Pragma Construct - <a href="4-tpc.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_error_location</span><span class="plain"> *</span><span class="identifier">eloc</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="identifier">text_stream</span><span class="plain"> *</span><span class="identifier">name</span><span class="plain">, </span><span class="reserved">inter_error_message</span><span class="plain"> **</span><span class="identifier">E</span><span class="plain">) {</span>
<span class="plain">*</span><span class="identifier">E</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">symb</span><span class="plain"> = </span><span class="functiontext"><a href="2-st.html#SP4">Inter::SymbolsTables::symbol_from_name</a></span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">name</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">symb</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">symb</span><span class="plain">)) {</span>
<span class="functiontext"><a href="2-sym.html#SP4">Inter::Symbols::undefine</a></span><span class="plain">(</span><span class="identifier">symb</span><span class="plain">);</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">symb</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="plain">*</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::quoted</a></span><span class="plain">(</span><span class="identifier">I</span><span class="string">"symbol already exists"</span><span class="plain">, </span><span class="identifier">name</span><span class="plain">, </span><span class="identifier">eloc</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-st.html#SP4">Inter::SymbolsTables::symbol_from_name_creating</a></span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">name</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="functiontext">Inter::Textual::find_symbol<button class="popup" onclick="togglePopup('usagePopup260')">...<span class="popuptext" id="usagePopup260">Usage of <b>Inter::Textual::find_symbol</b>:<br>Inter Data Types - <a href="3-idt.html#SP3">&#167;3</a><br>The Package Construct - <a href="4-tpc3.html#SP2">&#167;2</a><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 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 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_tree</span><span class="plain"> *</span><span class="identifier">I</span><span class="plain">, </span><span class="reserved">inter_error_location</span><span class="plain"> *</span><span class="identifier">eloc</span><span class="plain">, </span><span class="reserved">inter_symbols_table</span><span class="plain"> *</span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">text_stream</span><span class="plain"> *</span><span class="identifier">name</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_error_message</span><span class="plain"> **</span><span class="identifier">E</span><span class="plain">) {</span>
<span class="plain">*</span><span class="identifier">E</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">symb</span><span class="plain"> = </span><span class="functiontext"><a href="2-st.html#SP4">Inter::SymbolsTables::symbol_from_name</a></span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">name</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">symb</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) { *</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::quoted</a></span><span class="plain">(</span><span class="identifier">I</span><span class="string">"no such symbol"</span><span class="plain">, </span><span class="identifier">name</span><span class="plain">, </span><span class="identifier">eloc</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">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">symb</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">symb</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">symb</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">symb</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">symb</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="identifier">E</span><span class="plain"> = </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::quoted</a></span><span class="plain">(</span><span class="identifier">I</span><span class="string">"undefined symbol"</span><span class="plain">, </span><span class="identifier">name</span><span class="plain">, </span><span class="identifier">eloc</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">-&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="functiontext"><a href="2-sym.html#SP5">Inter::Symbols::is_predeclared</a></span><span class="plain">(</span><span class="identifier">symb</span><span class="plain">) == </span><span class="identifier">FALSE</span><span class="plain">)) {</span>
<span class="plain">*</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::quoted</a></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">name</span><span class="plain">, </span><span class="identifier">eloc</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="identifier">symb</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="functiontext">Inter::Textual::find_undefined_symbol<button class="popup" onclick="togglePopup('usagePopup261')">...<span class="popuptext" id="usagePopup261">Usage of <b>Inter::Textual::find_undefined_symbol</b>:<br>The Local Construct - <a href="5-tlc2.html#SP2">&#167;2</a></span></button></span><span class="plain">(</span><span class="reserved">inter_bookmark</span><span class="plain"> *</span><span class="identifier">IBM</span><span class="plain">, </span><span class="reserved">inter_error_location</span><span class="plain"> *</span><span class="identifier">eloc</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="identifier">text_stream</span><span class="plain"> *</span><span class="identifier">name</span><span class="plain">, </span><span class="reserved">inter_error_message</span><span class="plain"> **</span><span class="identifier">E</span><span class="plain">) {</span>
<span class="plain">*</span><span class="identifier">E</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">symb</span><span class="plain"> = </span><span class="functiontext"><a href="2-st.html#SP4">Inter::SymbolsTables::symbol_from_name</a></span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">name</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">symb</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) { *</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::quoted</a></span><span class="plain">(</span><span class="identifier">I</span><span class="string">"no such symbol"</span><span class="plain">, </span><span class="identifier">name</span><span class="plain">, </span><span class="identifier">eloc</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#SP4">Inter::Symbols::is_defined</a></span><span class="plain">(</span><span class="identifier">symb</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">symb</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_local</a></span><span class="plain">(</span><span class="identifier">symb</span><span class="plain">) == </span><span class="identifier">FALSE</span><span class="plain">)) {</span>
<span class="identifier">WRITE_TO</span><span class="plain">(</span><span class="identifier">STDERR</span><span class="plain">, </span><span class="string">"Ho! %S\n"</span><span class="plain">, </span><span class="identifier">symb</span><span class="plain">-&gt;</span><span class="element">symbol_name</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">symb</span><span class="plain">);</span>
<span class="functiontext"><a href="3-dfn.html#SP4">Inter::Defn::write_construct_text</a></span><span class="plain">(</span><span class="identifier">STDERR</span><span class="plain">, </span><span class="identifier">D</span><span class="plain">);</span>
<span class="plain">*</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::quoted</a></span><span class="plain">(</span><span class="identifier">I</span><span class="string">"symbol already defined"</span><span class="plain">, </span><span class="identifier">name</span><span class="plain">, </span><span class="identifier">eloc</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="identifier">symb</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="functiontext">Inter::Textual::find_KOI<button class="popup" onclick="togglePopup('usagePopup262')">...<span class="popuptext" id="usagePopup262">Usage of <b>Inter::Textual::find_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_error_location</span><span class="plain"> *</span><span class="identifier">eloc</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="identifier">text_stream</span><span class="plain"> *</span><span class="identifier">name</span><span class="plain">, </span><span class="reserved">inter_error_message</span><span class="plain"> **</span><span class="identifier">E</span><span class="plain">) {</span>
<span class="plain">*</span><span class="identifier">E</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">symb</span><span class="plain"> = </span><span class="functiontext"><a href="2-st.html#SP4">Inter::SymbolsTables::symbol_from_name</a></span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">name</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">symb</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) { *</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::quoted</a></span><span class="plain">(</span><span class="identifier">I</span><span class="string">"no such symbol"</span><span class="plain">, </span><span class="identifier">name</span><span class="plain">, </span><span class="identifier">eloc</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">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">symb</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="identifier">E</span><span class="plain"> = </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::quoted</a></span><span class="plain">(</span><span class="identifier">I</span><span class="string">"undefined symbol"</span><span class="plain">, </span><span class="identifier">name</span><span class="plain">, </span><span class="identifier">eloc</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">-&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="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">)) { *</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::quoted</a></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">name</span><span class="plain">, </span><span class="identifier">eloc</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">return</span><span class="plain"> </span><span class="identifier">symb</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="reserved">inter_data_type</span><span class="plain"> *</span><span class="functiontext">Inter::Textual::data_type<button class="popup" onclick="togglePopup('usagePopup263')">...<span class="popuptext" id="usagePopup263">Usage of <b>Inter::Textual::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_error_location</span><span class="plain"> *</span><span class="identifier">eloc</span><span class="plain">, </span><span class="identifier">text_stream</span><span class="plain"> *</span><span class="identifier">name</span><span class="plain">, </span><span class="reserved">inter_error_message</span><span class="plain"> **</span><span class="identifier">E</span><span class="plain">) {</span>
<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_name</a></span><span class="plain">(</span><span class="identifier">name</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="identifier">E</span><span class="plain"> = </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::quoted</a></span><span class="plain">(</span><span class="identifier">I</span><span class="string">"no such data type"</span><span class="plain">, </span><span class="identifier">name</span><span class="plain">, </span><span class="identifier">eloc</span><span class="plain">);</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">idt</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Textual::read_line<button class="popup" onclick="togglePopup('usagePopup264')">...<span class="popuptext" id="usagePopup264">Usage of <b>Inter::Textual::read_line</b>:<br>none</span></button></span><span class="plain">(</span><span class="identifier">text_stream</span><span class="plain"> *</span><span class="identifier">line</span><span class="plain">, </span><span class="identifier">text_file_position</span><span class="plain"> *</span><span class="identifier">tfp</span><span class="plain">, </span><span class="reserved">void</span><span class="plain"> *</span><span class="identifier">state</span><span class="plain">) {</span>
<span class="reserved">inter_bookmark</span><span class="plain"> *</span><span class="identifier">IBM</span><span class="plain"> = (</span><span class="reserved">inter_bookmark</span><span class="plain"> *) </span><span class="identifier">state</span><span class="plain">;</span>
<span class="reserved">inter_error_location</span><span class="plain"> </span><span class="identifier">eloc</span><span class="plain"> = </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::file_location</a></span><span class="plain">(</span><span class="identifier">line</span><span class="plain">, </span><span class="identifier">tfp</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">Str::len</span><span class="plain">(</span><span class="identifier">line</span><span class="plain">) == </span><span class="constant">0</span><span class="plain">) { </span><span class="identifier">no_blank_lines_stacked</span><span class="plain">++; </span><span class="reserved">return</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">no_blank_lines_stacked</span><span class="plain">; </span><span class="identifier">i</span><span class="plain">++) {</span>
<span class="reserved">inter_error_location</span><span class="plain"> </span><span class="identifier">b_eloc</span><span class="plain"> = </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::file_location</a></span><span class="plain">(</span><span class="identifier">I</span><span class="string">""</span><span class="plain">, </span><span class="identifier">tfp</span><span class="plain">);</span>
<span class="reserved">inter_error_message</span><span class="plain"> *</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext"><a href="3-dfn.html#SP4">Inter::Defn::read_construct_text</a></span><span class="plain">(</span><span class="identifier">I</span><span class="string">""</span><span class="plain">, &amp;</span><span class="identifier">b_eloc</span><span class="plain">, </span><span class="identifier">IBM</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">E</span><span class="plain">) </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::issue</a></span><span class="plain">(</span><span class="identifier">E</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="identifier">no_blank_lines_stacked</span><span class="plain"> = </span><span class="constant">0</span><span class="plain">;</span>
<span class="reserved">inter_error_message</span><span class="plain"> *</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext"><a href="3-dfn.html#SP4">Inter::Defn::read_construct_text</a></span><span class="plain">(</span><span class="identifier">line</span><span class="plain">, &amp;</span><span class="identifier">eloc</span><span class="plain">, </span><span class="identifier">IBM</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">E</span><span class="plain">) </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::issue</a></span><span class="plain">(</span><span class="identifier">E</span><span class="plain">);</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="inwebparagraph"><a id="SP2"></a><b>&#167;2. Writing textual inter. </b></p>
<pre class="display">
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Textual::writer<button class="popup" onclick="togglePopup('usagePopup265')">...<span class="popuptext" id="usagePopup265">Usage of <b>Inter::Textual::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</span><span class="plain"> *</span><span class="identifier">I</span><span class="plain"> = (</span><span class="reserved">inter_tree</span><span class="plain"> *) </span><span class="identifier">vI</span><span class="plain">;</span>
<span class="functiontext"><a href="#SP2">Inter::Textual::write</a></span><span class="plain">(</span><span class="identifier">OUT</span><span class="plain">, </span><span class="identifier">I</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="constant">1</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="reserved">typedef</span><span class="plain"> </span><span class="reserved">struct</span><span class="plain"> </span><span class="reserved">textual_write_state</span><span class="plain"> {</span>
<span class="reserved">struct</span><span class="plain"> </span><span class="identifier">text_stream</span><span class="plain"> *</span><span class="identifier">to</span><span class="plain">;</span>
<span class="reserved">int</span><span class="plain"> (*</span><span class="identifier">filter</span><span class="plain">)(</span><span class="reserved">inter_tree_node</span><span class="plain">, </span><span class="reserved">int</span><span class="plain">);</span>
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">pass</span><span class="plain">;</span>
<span class="plain">} </span><span class="reserved">textual_write_state</span><span class="plain">;</span>
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Textual::write<button class="popup" onclick="togglePopup('usagePopup266')">...<span class="popuptext" id="usagePopup266">Usage of <b>Inter::Textual::write</b>:<br>none</span></button></span><span class="plain">(</span><span class="identifier">OUTPUT_STREAM</span><span class="plain">, </span><span class="reserved">inter_tree</span><span class="plain"> *</span><span class="identifier">I</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> (*</span><span class="identifier">filter</span><span class="plain">)(</span><span class="reserved">inter_tree_node</span><span class="plain">, </span><span class="reserved">int</span><span class="plain">), </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">pass</span><span class="plain">) {</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">I</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-inter&gt;\n"</span><span class="plain">); </span><span class="reserved">return</span><span class="plain">; }</span>
<span class="reserved">textual_write_state</span><span class="plain"> </span><span class="identifier">tws</span><span class="plain">;</span>
<span class="identifier">tws</span><span class="plain">.</span><span class="element">to</span><span class="plain"> = </span><span class="identifier">OUT</span><span class="plain">;</span>
<span class="identifier">tws</span><span class="plain">.</span><span class="element">filter</span><span class="plain"> = </span><span class="identifier">filter</span><span class="plain">;</span>
<span class="identifier">tws</span><span class="plain">.</span><span class="element">pass</span><span class="plain"> = </span><span class="identifier">pass</span><span class="plain">;</span>
<span class="functiontext"><a href="2-it.html#SP5">Inter::Tree::traverse_root_only</a></span><span class="plain">(</span><span class="identifier">I</span><span class="plain">, </span><span class="functiontext"><a href="#SP2">Inter::Textual::visitor</a></span><span class="plain">, &amp;</span><span class="identifier">tws</span><span class="plain">, -</span><span class="constant">PACKAGE_IST</span><span class="plain">);</span>
<span class="functiontext"><a href="2-it.html#SP5">Inter::Tree::traverse</a></span><span class="plain">(</span><span class="identifier">I</span><span class="plain">, </span><span class="functiontext"><a href="#SP2">Inter::Textual::visitor</a></span><span class="plain">, &amp;</span><span class="identifier">tws</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="constant">0</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Textual::visitor<button class="popup" onclick="togglePopup('usagePopup267')">...<span class="popuptext" id="usagePopup267">Usage of <b>Inter::Textual::visitor</b>:<br>none</span></button></span><span class="plain">(</span><span class="reserved">inter_tree</span><span class="plain"> *</span><span class="identifier">I</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">void</span><span class="plain"> *</span><span class="identifier">state</span><span class="plain">) {</span>
<span class="reserved">textual_write_state</span><span class="plain"> *</span><span class="identifier">tws</span><span class="plain"> = (</span><span class="reserved">textual_write_state</span><span class="plain"> *) </span><span class="identifier">state</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">tws</span><span class="plain">-&gt;</span><span class="identifier">filter</span><span class="plain">) &amp;&amp; ((*(</span><span class="identifier">tws</span><span class="plain">-&gt;</span><span class="element">filter</span><span class="plain">))(*</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">tws</span><span class="plain">-&gt;</span><span class="element">pass</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="reserved">inter_error_message</span><span class="plain"> *</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext"><a href="3-dfn.html#SP4">Inter::Defn::write_construct_text</a></span><span class="plain">(</span><span class="identifier">tws</span><span class="plain">-&gt;</span><span class="element">to</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">E</span><span class="plain">) </span><span class="functiontext"><a href="3-ie.html#SP1">Inter::Errors::issue</a></span><span class="plain">(</span><span class="identifier">E</span><span class="plain">);</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The structure textual_write_state is private to this section.</p>
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