File: C:/Ruby27-x64/share/doc/ruby/html/Racc/Sym.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>class Racc::Sym - RDoc Documentation</title>
<script type="text/javascript">
var rdoc_rel_prefix = "../";
var index_rel_prefix = "../";
</script>
<script src="../js/navigation.js" defer></script>
<script src="../js/search.js" defer></script>
<script src="../js/search_index.js" defer></script>
<script src="../js/searcher.js" defer></script>
<script src="../js/darkfish.js" defer></script>
<link href="../css/fonts.css" rel="stylesheet">
<link href="../css/rdoc.css" rel="stylesheet">
<body id="top" role="document" class="class">
<nav role="navigation">
<div id="project-navigation">
<div id="home-section" role="region" title="Quick navigation" class="nav-section">
<h2>
<a href="../index.html" rel="home">Home</a>
</h2>
<div id="table-of-contents-navigation">
<a href="../table_of_contents.html#pages">Pages</a>
<a href="../table_of_contents.html#classes">Classes</a>
<a href="../table_of_contents.html#methods">Methods</a>
</div>
</div>
<div id="search-section" role="search" class="project-section initially-hidden">
<form action="#" method="get" accept-charset="utf-8">
<div id="search-field-wrapper">
<input id="search-field" role="combobox" aria-label="Search"
aria-autocomplete="list" aria-controls="search-results"
type="text" name="search" placeholder="Search" spellcheck="false"
title="Type to search, Up and Down to navigate, Enter to load">
</div>
<ul id="search-results" aria-label="Search Results"
aria-busy="false" aria-expanded="false"
aria-atomic="false" class="initially-hidden"></ul>
</form>
</div>
</div>
<div id="class-metadata">
<div id="parent-class-section" class="nav-section">
<h3>Parent</h3>
<p class="link"><a href="../Object.html">Object</a>
</div>
<!-- Method Quickref -->
<div id="method-list-section" class="nav-section">
<h3>Methods</h3>
<ul class="link-list" role="directory">
<li ><a href="#method-c-new">::new</a>
<li ><a href="#method-c-once_writer">::once_writer</a>
<li ><a href="#method-i-dummy-3F">#dummy?</a>
<li ><a href="#method-i-inspect">#inspect</a>
<li ><a href="#method-i-nonterminal-3F">#nonterminal?</a>
<li ><a href="#method-i-null-3D">#null=</a>
<li ><a href="#method-i-nullable-3F">#nullable?</a>
<li ><a href="#method-i-rule">#rule</a>
<li ><a href="#method-i-self_null-3F">#self_null?</a>
<li ><a href="#method-i-serialize">#serialize</a>
<li ><a href="#method-i-should_terminal">#should_terminal</a>
<li ><a href="#method-i-should_terminal-3F">#should_terminal?</a>
<li ><a href="#method-i-string_symbol-3F">#string_symbol?</a>
<li ><a href="#method-i-term-3D">#term=</a>
<li ><a href="#method-i-terminal-3F">#terminal?</a>
<li ><a href="#method-i-to_s">#to_s</a>
<li ><a href="#method-i-useless-3D">#useless=</a>
<li ><a href="#method-i-useless-3F">#useless?</a>
<li ><a href="#method-i-7C">#|</a>
</ul>
</div>
</div>
</nav>
<main role="main" aria-labelledby="class-Racc::Sym">
<h1 id="class-Racc::Sym" class="class">
class Racc::Sym
</h1>
<section class="description">
<p>Stands terminal and nonterminal symbols.</p>
</section>
<section id="5Buntitled-5D" class="documentation-section">
<section class="attribute-method-details" class="method-section">
<header>
<h3>Attributes</h3>
</header>
<div id="attribute-i-assoc" class="method-detail">
<div class="method-heading attribute-method-heading">
<span class="method-name">assoc</span><span
class="attribute-access-type">[RW]</span>
</div>
<div class="method-description">
</div>
</div>
<div id="attribute-i-expand" class="method-detail">
<div class="method-heading attribute-method-heading">
<span class="method-name">expand</span><span
class="attribute-access-type">[R]</span>
</div>
<div class="method-description">
</div>
</div>
<div id="attribute-i-hash" class="method-detail">
<div class="method-heading attribute-method-heading">
<span class="method-name">hash</span><span
class="attribute-access-type">[R]</span>
</div>
<div class="method-description">
</div>
</div>
<div id="attribute-i-heads" class="method-detail">
<div class="method-heading attribute-method-heading">
<span class="method-name">heads</span><span
class="attribute-access-type">[R]</span>
</div>
<div class="method-description">
<p>cache</p>
</div>
</div>
<div id="attribute-i-ident" class="method-detail">
<div class="method-heading attribute-method-heading">
<span class="method-name">ident</span><span
class="attribute-access-type">[R]</span>
</div>
<div class="method-description">
</div>
</div>
<div id="attribute-i-locate" class="method-detail">
<div class="method-heading attribute-method-heading">
<span class="method-name">locate</span><span
class="attribute-access-type">[R]</span>
</div>
<div class="method-description">
</div>
</div>
<div id="attribute-i-precedence" class="method-detail">
<div class="method-heading attribute-method-heading">
<span class="method-name">precedence</span><span
class="attribute-access-type">[RW]</span>
</div>
<div class="method-description">
</div>
</div>
<div id="attribute-i-serialized" class="method-detail">
<div class="method-heading attribute-method-heading">
<span class="method-name">serialized</span><span
class="attribute-access-type">[W]</span>
</div>
<div class="method-description">
</div>
</div>
<div id="attribute-i-value" class="method-detail">
<div class="method-heading attribute-method-heading">
<span class="method-name">value</span><span
class="attribute-access-type">[R]</span>
</div>
<div class="method-description">
</div>
</div>
</section>
<section id="public-class-5Buntitled-5D-method-details" class="method-section">
<header>
<h3>Public Class Methods</h3>
</header>
<div id="method-c-new" class="method-detail ">
<div class="method-heading">
<span class="method-name">new</span><span
class="method-args">(value, dummyp)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="new-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 969</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>(<span class="ruby-identifier">value</span>, <span class="ruby-identifier">dummyp</span>)
<span class="ruby-ivar">@ident</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-ivar">@value</span> = <span class="ruby-identifier">value</span>
<span class="ruby-ivar">@dummyp</span> = <span class="ruby-identifier">dummyp</span>
<span class="ruby-ivar">@term</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-ivar">@nterm</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-ivar">@should_terminal</span> = <span class="ruby-keyword">false</span>
<span class="ruby-ivar">@precedence</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-keyword">case</span> <span class="ruby-identifier">value</span>
<span class="ruby-keyword">when</span> <span class="ruby-constant">Symbol</span>
<span class="ruby-ivar">@to_s</span> = <span class="ruby-identifier">value</span>.<span class="ruby-identifier">to_s</span>
<span class="ruby-ivar">@serialized</span> = <span class="ruby-identifier">value</span>.<span class="ruby-identifier">inspect</span>
<span class="ruby-ivar">@string</span> = <span class="ruby-keyword">false</span>
<span class="ruby-keyword">when</span> <span class="ruby-constant">String</span>
<span class="ruby-ivar">@to_s</span> = <span class="ruby-identifier">value</span>.<span class="ruby-identifier">inspect</span>
<span class="ruby-ivar">@serialized</span> = <span class="ruby-identifier">value</span>.<span class="ruby-identifier">dump</span>
<span class="ruby-ivar">@string</span> = <span class="ruby-keyword">true</span>
<span class="ruby-keyword">when</span> <span class="ruby-keyword">false</span>
<span class="ruby-ivar">@to_s</span> = <span class="ruby-string">'$end'</span>
<span class="ruby-ivar">@serialized</span> = <span class="ruby-string">'false'</span>
<span class="ruby-ivar">@string</span> = <span class="ruby-keyword">false</span>
<span class="ruby-keyword">when</span> <span class="ruby-constant">ErrorSymbolValue</span>
<span class="ruby-ivar">@to_s</span> = <span class="ruby-string">'error'</span>
<span class="ruby-ivar">@serialized</span> = <span class="ruby-string">'Object.new'</span>
<span class="ruby-ivar">@string</span> = <span class="ruby-keyword">false</span>
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-node">"unknown symbol value: #{value.class}"</span>
<span class="ruby-keyword">end</span>
<span class="ruby-ivar">@heads</span> = []
<span class="ruby-ivar">@locate</span> = []
<span class="ruby-ivar">@snull</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-ivar">@null</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-ivar">@expand</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-ivar">@useless</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-c-once_writer" class="method-detail ">
<div class="method-heading">
<span class="method-name">once_writer</span><span
class="method-args">(nm)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="once_writer-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1008</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">once_writer</span>(<span class="ruby-identifier">nm</span>)
<span class="ruby-identifier">nm</span> = <span class="ruby-identifier">nm</span>.<span class="ruby-identifier">id2name</span>
<span class="ruby-identifier">module_eval</span>(<span class="ruby-identifier"><<-EOS</span>)
<span class="ruby-value"> def #{nm}=(v)
raise 'racc: fatal: @#{nm} != nil' unless @#{nm}.nil?
@#{nm} = v
end
</span><span class="ruby-identifier"> EOS</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
</section>
<section id="public-instance-5Buntitled-5D-method-details" class="method-section">
<header>
<h3>Public Instance Methods</h3>
</header>
<div id="method-i-dummy-3F" class="method-detail ">
<div class="method-heading">
<span class="method-name">dummy?</span><span
class="method-args">()</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="dummy-3F-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1026</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">dummy?</span>
<span class="ruby-ivar">@dummyp</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-inspect" class="method-detail method-alias">
<div class="method-heading">
<span class="method-name">inspect</span><span
class="method-args">()</span>
</div>
<div class="method-description">
</div>
<div class="aliases">
Alias for: <a href="Sym.html#method-i-to_s">to_s</a>
</div>
</div>
<div id="method-i-nonterminal-3F" class="method-detail ">
<div class="method-heading">
<span class="method-name">nonterminal?</span><span
class="method-args">()</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="nonterminal-3F-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1034</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">nonterminal?</span>
<span class="ruby-ivar">@nterm</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-null-3D" class="method-detail ">
<div class="method-heading">
<span class="method-name">null=</span><span
class="method-args">(n)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="null-3D-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1096</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">null=</span>(<span class="ruby-identifier">n</span>)
<span class="ruby-ivar">@null</span> = <span class="ruby-identifier">n</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-nullable-3F" class="method-detail ">
<div class="method-heading">
<span class="method-name">nullable?</span><span
class="method-args">()</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="nullable-3F-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1092</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">nullable?</span>
<span class="ruby-ivar">@null</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-rule" class="method-detail ">
<div class="method-heading">
<span class="method-name">rule</span><span
class="method-args">()</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="rule-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1075</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">rule</span>
<span class="ruby-constant">Rule</span>.<span class="ruby-identifier">new</span>(<span class="ruby-keyword">nil</span>, [<span class="ruby-keyword">self</span>], <span class="ruby-constant">UserAction</span>.<span class="ruby-identifier">empty</span>)
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-self_null-3F" class="method-detail ">
<div class="method-heading">
<span class="method-name">self_null?</span><span
class="method-args">()</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="self_null-3F-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1086</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">self_null?</span>
<span class="ruby-ivar">@snull</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-serialize" class="method-detail ">
<div class="method-heading">
<span class="method-name">serialize</span><span
class="method-args">()</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="serialize-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1056</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">serialize</span>
<span class="ruby-ivar">@serialized</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-should_terminal" class="method-detail ">
<div class="method-heading">
<span class="method-name">should_terminal</span><span
class="method-args">()</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="should_terminal-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1044</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">should_terminal</span>
<span class="ruby-ivar">@should_terminal</span> = <span class="ruby-keyword">true</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-should_terminal-3F" class="method-detail ">
<div class="method-heading">
<span class="method-name">should_terminal?</span><span
class="method-args">()</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="should_terminal-3F-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1048</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">should_terminal?</span>
<span class="ruby-ivar">@should_terminal</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-string_symbol-3F" class="method-detail ">
<div class="method-heading">
<span class="method-name">string_symbol?</span><span
class="method-args">()</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="string_symbol-3F-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1052</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">string_symbol?</span>
<span class="ruby-ivar">@string</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-term-3D" class="method-detail ">
<div class="method-heading">
<span class="method-name">term=</span><span
class="method-args">(t)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="term-3D-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1038</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">term=</span>(<span class="ruby-identifier">t</span>)
<span class="ruby-identifier">raise</span> <span class="ruby-string">'racc: fatal: term= called twice'</span> <span class="ruby-keyword">unless</span> <span class="ruby-ivar">@term</span>.<span class="ruby-identifier">nil?</span>
<span class="ruby-ivar">@term</span> = <span class="ruby-identifier">t</span>
<span class="ruby-ivar">@nterm</span> = <span class="ruby-operator">!</span><span class="ruby-identifier">t</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-terminal-3F" class="method-detail ">
<div class="method-heading">
<span class="method-name">terminal?</span><span
class="method-args">()</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="terminal-3F-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1030</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">terminal?</span>
<span class="ruby-ivar">@term</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-to_s" class="method-detail ">
<div class="method-heading">
<span class="method-name">to_s</span><span
class="method-args">()</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="to_s-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1065</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">to_s</span>
<span class="ruby-ivar">@to_s</span>.<span class="ruby-identifier">dup</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
<div class="aliases">
Also aliased as: <a href="Sym.html#method-i-inspect">inspect</a>
</div>
</div>
<div id="method-i-useless-3D" class="method-detail ">
<div class="method-heading">
<span class="method-name">useless=</span><span
class="method-args">(f)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="useless-3D-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1107</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">useless=</span>(<span class="ruby-identifier">f</span>)
<span class="ruby-ivar">@useless</span> = <span class="ruby-identifier">f</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-useless-3F" class="method-detail ">
<div class="method-heading">
<span class="method-name">useless?</span><span
class="method-args">()</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="useless-3F-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1103</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">useless?</span>
<span class="ruby-ivar">@useless</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-7C" class="method-detail ">
<div class="method-heading">
<span class="method-name">|</span><span
class="method-args">(x)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="7C-source">
<pre><span class="ruby-comment"># File lib/racc/grammar.rb, line 1071</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">|</span>(<span class="ruby-identifier">x</span>)
<span class="ruby-identifier">rule</span>() <span class="ruby-operator">|</span> <span class="ruby-identifier">x</span>.<span class="ruby-identifier">rule</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
</section>
</section>
</main>
<footer id="validator-badges" role="contentinfo">
<p><a href="https://validator.w3.org/check/referer">Validate</a>
<p>Generated by <a href="https://ruby.github.io/rdoc/">RDoc</a> 6.2.1.1.
<p>Based on <a href="http://deveiate.org/projects/Darkfish-RDoc/">Darkfish</a> by <a href="http://deveiate.org">Michael Granger</a>.
</footer>