<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>Class: SuperStruct</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <meta http-equiv="Content-Script-Type" content="text/javascript" /> <link rel="stylesheet" href=".././rdoc-style.css" type="text/css" media="screen" /> <script type="text/javascript"> // <![CDATA[ function popupCode( url ) { window.open(url, "Code", "resizable=yes,scrollbars=yes,toolbar=no,status=no,height=150,width=400") } function toggleCode( id ) { if ( document.getElementById ) elem = document.getElementById( id ); else if ( document.all ) elem = eval( "document.all." + id ); else return false; elemStyle = elem.style; if ( elemStyle.display != "block" ) { elemStyle.display = "block" } else { elemStyle.display = "none" } return true; } // Make codeblocks hidden by default document.writeln( "<style type=\"text/css\">div.method-source-code { display: none }</style>" ) // ]]> </script> </head> <body> <div id="classHeader"> <table class="header-table"> <tr class="top-aligned-row"> <td><strong>Class</strong></td> <td class="class-name-in-header">SuperStruct</td> </tr> <tr class="top-aligned-row"> <td><strong>In:</strong></td> <td> <a href="../files/lib/carat/sstruct_rb.html"> lib/carat/sstruct.rb </a> <br /> </td> </tr> <tr class="top-aligned-row"> <td><strong>Parent:</strong></td> <td> <a href="Object.html"> Object </a> </td> </tr> </table> </div> <!-- banner header --> <div id="bodyContent"> <div id="contextContent"> <div id="description"> <h1><a href="SuperStruct.html">SuperStruct</a></h1> <p> This is an easy way to create <a href="Struct.html">Struct</a>-like classes; it converts easily between hashes and arrays, and it allows OpenStruct-like dynamic naming of members. </p> <p> Unlike <a href="Struct.html">Struct</a>, it creates a "real" class, and it has real instance variables with predictable names. </p> <p> A basic limitation is that the hash keys must be legal method names (unless used with send()). </p> <p> Basically, ss["alpha"], ss[:alpha], ss[0], and ss.alpha all mean the same. </p> <h2>Usage</h2> <h2>Author(s)</h2> <ul> <li>Hal Fulton </li> </ul> <h2>Legal</h2> <p> Ruby License (see incuded file) </p> </div> </div> <div id="method-list"> <h3 class="section-bar">Methods</h3> <div class="name-list"> <a href="#M000162">new</a> <a href="#M000163">open</a> </div> </div> </div> <!-- if includes --> <div id="section"> <!-- if method_list --> <div id="methods"> <h3 class="section-bar">Public Class methods</h3> <div id="method-M000162" class="method-detail"> <a name="M000162"></a> <div class="method-heading"> <a href="#M000162" class="method-signature"> <span class="method-name">new</span><span class="method-args">(*args)</span> </a> </div> <div class="method-description"> <p><a class="source-toggle" href="#" onclick="toggleCode('M000162-source');return false;">[Source]</a></p> <div class="method-source-code" id="M000162-source"> <pre> <span class="ruby-comment cmt"># File lib/carat/sstruct.rb, line 33</span> <span class="ruby-keyword kw">def</span> <span class="ruby-constant">SuperStruct</span>.<span class="ruby-identifier">new</span>(<span class="ruby-operator">*</span><span class="ruby-identifier">args</span>) <span class="ruby-ivar">@table</span> = [] <span class="ruby-ivar">@setsyms</span> = [] <span class="ruby-comment cmt"># Setter symbols</span> <span class="ruby-identifier">klass</span> = <span class="ruby-constant">Class</span>.<span class="ruby-identifier">new</span> <span class="ruby-keyword kw">if</span> (<span class="ruby-identifier">args</span>.<span class="ruby-identifier">size</span> <span class="ruby-operator">==</span> <span class="ruby-value">1</span>) <span class="ruby-operator">&&</span> (<span class="ruby-identifier">args</span>[<span class="ruby-value">0</span>].<span class="ruby-identifier">is_a?</span> <span class="ruby-constant">Array</span>) <span class="ruby-identifier">args</span> = <span class="ruby-identifier">args</span>[<span class="ruby-value">0</span>] <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">strs</span> = <span class="ruby-identifier">args</span>.<span class="ruby-identifier">map</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">x</span><span class="ruby-operator">|</span> <span class="ruby-identifier">x</span>.<span class="ruby-identifier">to_s</span> } <span class="ruby-identifier">args</span>.<span class="ruby-identifier">each_with_index</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">k</span>,<span class="ruby-identifier">i</span><span class="ruby-operator">|</span> <span class="ruby-keyword kw">case</span> <span class="ruby-keyword kw">when</span> (<span class="ruby-operator">!</span> [<span class="ruby-constant">String</span>,<span class="ruby-constant">Symbol</span>].<span class="ruby-identifier">include?</span> <span class="ruby-identifier">k</span>.<span class="ruby-identifier">class</span>) <span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-value str">"Need a String or Symbol"</span> <span class="ruby-keyword kw">when</span> (<span class="ruby-identifier">strs</span>[<span class="ruby-identifier">i</span>] <span class="ruby-operator">!~</span> <span class="ruby-regexp re">/[_a-zA-Z][_a-zA-Z0-9]*/</span>) <span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-value str">"Illegal character"</span> <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">k</span> = <span class="ruby-identifier">k</span>.<span class="ruby-identifier">intern</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">k</span>.<span class="ruby-identifier">is_a?</span> <span class="ruby-constant">String</span> <span class="ruby-ivar">@table</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">k</span> <span class="ruby-ivar">@setsyms</span> <span class="ruby-operator"><<</span> (<span class="ruby-identifier">k</span>.<span class="ruby-identifier">to_s</span> <span class="ruby-operator">+</span> <span class="ruby-value str">"="</span>).<span class="ruby-identifier">intern</span> <span class="ruby-identifier">klass</span>.<span class="ruby-identifier">instance_eval</span> { <span class="ruby-identifier">attr_accessor</span> <span class="ruby-identifier">k</span> } <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">setsyms</span> = <span class="ruby-ivar">@setsyms</span> <span class="ruby-identifier">table</span> = <span class="ruby-ivar">@table</span> <span class="ruby-identifier">vals</span> = <span class="ruby-ivar">@vals</span> <span class="ruby-identifier">klass</span>.<span class="ruby-identifier">class_eval</span> <span class="ruby-keyword kw">do</span> <span class="ruby-identifier">attr_reader</span> <span class="ruby-identifier">:singleton</span> <span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">:initialize</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-operator">*</span><span class="ruby-identifier">vals</span><span class="ruby-operator">|</span> <span class="ruby-identifier">n</span> = <span class="ruby-identifier">vals</span>.<span class="ruby-identifier">size</span> <span class="ruby-identifier">m</span> = <span class="ruby-identifier">table</span>.<span class="ruby-identifier">size</span> <span class="ruby-keyword kw">case</span> <span class="ruby-keyword kw">when</span> <span class="ruby-identifier">n</span> <span class="ruby-operator"><</span> <span class="ruby-identifier">m</span> <span class="ruby-comment cmt"># raise ArgumentError, "Too few arguments (#{n} for #{m})"</span> <span class="ruby-comment cmt"># Never mind... extra variables will just be nil</span> <span class="ruby-keyword kw">when</span> <span class="ruby-identifier">n</span> <span class="ruby-operator">></span> <span class="ruby-identifier">m</span> <span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-node">"Too many arguments (#{n} for #{m})"</span> <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">setsyms</span>.<span class="ruby-identifier">each_with_index</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">var</span>,<span class="ruby-identifier">i</span><span class="ruby-operator">|</span> <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">send</span>(<span class="ruby-identifier">var</span>,<span class="ruby-identifier">vals</span>[<span class="ruby-identifier">i</span>]) <span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">:pretty_print</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">q</span><span class="ruby-operator">|</span> <span class="ruby-comment cmt"># pp.rb support</span> <span class="ruby-identifier">q</span>.<span class="ruby-identifier">object_group</span>(<span class="ruby-keyword kw">self</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-identifier">q</span>.<span class="ruby-identifier">seplist</span>(<span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">members</span>, <span class="ruby-identifier">proc</span> { <span class="ruby-identifier">q</span>.<span class="ruby-identifier">text</span> <span class="ruby-value str">","</span> }) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">member</span><span class="ruby-operator">|</span> <span class="ruby-comment cmt"># self.members.each do |member|</span> <span class="ruby-comment cmt"># q.text "," # unless q.first?</span> <span class="ruby-identifier">q</span>.<span class="ruby-identifier">breakable</span> <span class="ruby-identifier">q</span>.<span class="ruby-identifier">text</span> <span class="ruby-identifier">member</span>.<span class="ruby-identifier">to_s</span> <span class="ruby-identifier">q</span>.<span class="ruby-identifier">text</span> <span class="ruby-value str">'='</span> <span class="ruby-identifier">q</span>.<span class="ruby-identifier">group</span>(<span class="ruby-value">1</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-identifier">q</span>.<span class="ruby-identifier">breakable</span> <span class="ruby-value str">''</span> <span class="ruby-identifier">q</span>.<span class="ruby-identifier">pp</span> <span class="ruby-keyword kw">self</span>[<span class="ruby-identifier">member</span>] <span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">:inspect</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-identifier">str</span> = <span class="ruby-node">"#<#{self.class}:"</span> <span class="ruby-identifier">table</span>.<span class="ruby-identifier">each</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">item</span><span class="ruby-operator">|</span> <span class="ruby-identifier">str</span> <span class="ruby-operator"><<</span> <span class="ruby-node">" #{item}=#{self.send(item)}"</span> } <span class="ruby-identifier">str</span> <span class="ruby-operator">+</span> <span class="ruby-value str">">"</span> <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">:[]</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-operator">*</span><span class="ruby-identifier">index</span><span class="ruby-operator">|</span> <span class="ruby-keyword kw">case</span> <span class="ruby-identifier">index</span>.<span class="ruby-identifier">map</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">x</span><span class="ruby-operator">|</span> <span class="ruby-identifier">x</span>.<span class="ruby-identifier">class</span> } <span class="ruby-keyword kw">when</span> [<span class="ruby-constant">Fixnum</span>] <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">send</span>(<span class="ruby-identifier">table</span>[<span class="ruby-operator">*</span><span class="ruby-identifier">index</span>]) <span class="ruby-keyword kw">when</span> [<span class="ruby-constant">Fixnum</span>,<span class="ruby-constant">Fixnum</span>], [<span class="ruby-constant">Range</span>] <span class="ruby-identifier">table</span>[<span class="ruby-operator">*</span><span class="ruby-identifier">index</span>].<span class="ruby-identifier">map</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">x</span><span class="ruby-operator">|</span> <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">send</span>(<span class="ruby-identifier">x</span>)} <span class="ruby-keyword kw">when</span> [<span class="ruby-constant">String</span>] <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">send</span>(<span class="ruby-identifier">index</span>[<span class="ruby-value">0</span>].<span class="ruby-identifier">intern</span>) <span class="ruby-keyword kw">when</span> [<span class="ruby-constant">Symbol</span>] <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">send</span>(<span class="ruby-identifier">index</span>[<span class="ruby-value">0</span>]) <span class="ruby-keyword kw">else</span> <span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>,<span class="ruby-value str">"Illegal index"</span> <span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">:[]=</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-operator">*</span><span class="ruby-identifier">index</span><span class="ruby-operator">|</span> <span class="ruby-identifier">value</span> = <span class="ruby-identifier">index</span>[<span class="ruby-value">-1</span>] <span class="ruby-identifier">index</span> = <span class="ruby-identifier">index</span>[<span class="ruby-value">0</span><span class="ruby-operator">..</span><span class="ruby-value">-2</span>] <span class="ruby-keyword kw">case</span> <span class="ruby-identifier">index</span>.<span class="ruby-identifier">map</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">x</span><span class="ruby-operator">|</span> <span class="ruby-identifier">x</span>.<span class="ruby-identifier">class</span> } <span class="ruby-keyword kw">when</span> [<span class="ruby-constant">Fixnum</span>] <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">send</span>(<span class="ruby-identifier">table</span>[<span class="ruby-operator">*</span><span class="ruby-identifier">index</span>]) <span class="ruby-keyword kw">when</span> [<span class="ruby-constant">Fixnum</span>,<span class="ruby-constant">Fixnum</span>], [<span class="ruby-constant">Range</span>] <span class="ruby-identifier">setsyms</span>[<span class="ruby-operator">*</span><span class="ruby-identifier">index</span>].<span class="ruby-identifier">map</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">x</span><span class="ruby-operator">|</span> <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">send</span>(<span class="ruby-identifier">x</span>,<span class="ruby-identifier">value</span>) } <span class="ruby-keyword kw">when</span> [<span class="ruby-constant">String</span>] <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">send</span>(<span class="ruby-identifier">index</span>[<span class="ruby-value">0</span>].<span class="ruby-identifier">intern</span>,<span class="ruby-identifier">value</span>) <span class="ruby-keyword kw">when</span> [<span class="ruby-constant">Symbol</span>] <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">send</span>(<span class="ruby-identifier">index</span>[<span class="ruby-value">0</span>],<span class="ruby-identifier">value</span>) <span class="ruby-keyword kw">else</span> <span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>,<span class="ruby-value str">"Illegal index"</span> <span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">:to_a</span>) { <span class="ruby-identifier">table</span>.<span class="ruby-identifier">map</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">x</span><span class="ruby-operator">|</span> <span class="ruby-identifier">eval</span>(<span class="ruby-value str">"@"</span><span class="ruby-operator">+</span><span class="ruby-identifier">x</span>.<span class="ruby-identifier">to_s</span>) } } <span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">:to_ary</span>) { <span class="ruby-identifier">to_a</span> } <span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">:members</span>) { <span class="ruby-identifier">table</span>.<span class="ruby-identifier">map</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">x</span><span class="ruby-operator">|</span> <span class="ruby-identifier">x</span>.<span class="ruby-identifier">to_s</span> } } <span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">:to_struct</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-identifier">mems</span> = <span class="ruby-identifier">table</span> <span class="ruby-constant">Struct</span>.<span class="ruby-identifier">new</span>(<span class="ruby-value str">"TEMP"</span>,<span class="ruby-operator">*</span><span class="ruby-identifier">mems</span>) <span class="ruby-comment cmt"># Struct::TEMP.new(*vals) # Why doesn't this work??</span> <span class="ruby-identifier">data</span> = <span class="ruby-identifier">mems</span>.<span class="ruby-identifier">map</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">x</span><span class="ruby-operator">|</span> <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">send</span>(<span class="ruby-identifier">x</span>) } <span class="ruby-constant">Struct</span><span class="ruby-operator">::</span><span class="ruby-constant">TEMP</span>.<span class="ruby-identifier">new</span>(<span class="ruby-operator">*</span><span class="ruby-identifier">data</span>) <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">:to_hash</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-identifier">hash</span> = {} <span class="ruby-identifier">table</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">mem</span><span class="ruby-operator">|</span> <span class="ruby-identifier">mem</span> = <span class="ruby-identifier">mem</span>.<span class="ruby-identifier">to_s</span> <span class="ruby-identifier">hash</span>.<span class="ruby-identifier">update</span>(<span class="ruby-identifier">mem</span> =<span class="ruby-operator">></span> <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">send</span>(<span class="ruby-identifier">mem</span>)) <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">hash</span> <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">:set</span>) {<span class="ruby-operator">|</span><span class="ruby-identifier">h</span><span class="ruby-operator">|</span> <span class="ruby-identifier">h</span>.<span class="ruby-identifier">each_pair</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">k</span>,<span class="ruby-identifier">v</span><span class="ruby-operator">|</span> <span class="ruby-identifier">send</span>(<span class="ruby-identifier">k</span>.<span class="ruby-identifier">to_s</span><span class="ruby-operator">+</span><span class="ruby-value str">"="</span>,<span class="ruby-identifier">v</span>) } } <span class="ruby-comment cmt"># Class methods...</span> <span class="ruby-ivar">@singleton</span> = <span class="ruby-keyword kw">class</span> <span class="ruby-operator"><<</span> <span class="ruby-keyword kw">self</span> <span class="ruby-keyword kw">self</span> <span class="ruby-keyword kw">end</span> <span class="ruby-ivar">@singleton</span>.<span class="ruby-identifier">instance_eval</span> <span class="ruby-keyword kw">do</span> <span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">:members</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-identifier">table</span>.<span class="ruby-identifier">map</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">x</span><span class="ruby-operator">|</span> <span class="ruby-identifier">x</span>.<span class="ruby-identifier">to_s</span> } <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">me</span> = <span class="ruby-keyword kw">self</span> <span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">:attr_tester</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-operator">*</span><span class="ruby-identifier">syms</span><span class="ruby-operator">|</span> <span class="ruby-identifier">syms</span>.<span class="ruby-identifier">each</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">sym</span><span class="ruby-operator">|</span> <span class="ruby-identifier">alias_method</span>(<span class="ruby-identifier">sym</span>.<span class="ruby-identifier">to_s</span><span class="ruby-operator">+</span><span class="ruby-value str">"?"</span>,<span class="ruby-identifier">sym</span>) } <span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">klass</span> <span class="ruby-keyword kw">end</span> </pre> </div> </div> </div> <div id="method-M000163" class="method-detail"> <a name="M000163"></a> <div class="method-heading"> <a href="#M000163" class="method-signature"> <span class="method-name">open</span><span class="method-args">(*args)</span> </a> </div> <div class="method-description"> <p><a class="source-toggle" href="#" onclick="toggleCode('M000163-source');return false;">[Source]</a></p> <div class="method-source-code" id="M000163-source"> <pre> <span class="ruby-comment cmt"># File lib/carat/sstruct.rb, line 164</span> <span class="ruby-keyword kw">def</span> <span class="ruby-constant">SuperStruct</span>.<span class="ruby-identifier">open</span>(<span class="ruby-operator">*</span><span class="ruby-identifier">args</span>) <span class="ruby-identifier">klass</span> = <span class="ruby-constant">SuperStruct</span>.<span class="ruby-identifier">new</span>(<span class="ruby-operator">*</span><span class="ruby-identifier">args</span>) <span class="ruby-identifier">table</span> = <span class="ruby-ivar">@table</span> <span class="ruby-identifier">setsyms</span> = <span class="ruby-ivar">@setsyms</span> <span class="ruby-identifier">table</span> = <span class="ruby-ivar">@table</span> <span class="ruby-identifier">klass</span>.<span class="ruby-identifier">class_eval</span> <span class="ruby-keyword kw">do</span> <span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">:method_missing</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">meth</span>, <span class="ruby-operator">*</span><span class="ruby-identifier">args</span><span class="ruby-operator">|</span> <span class="ruby-identifier">mname</span> = <span class="ruby-identifier">meth</span>.<span class="ruby-identifier">id2name</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">mname</span> <span class="ruby-operator">=~</span> <span class="ruby-regexp re">/=$/</span> <span class="ruby-identifier">getter</span> = <span class="ruby-identifier">mname</span>.<span class="ruby-identifier">chop</span> <span class="ruby-identifier">setter</span> = <span class="ruby-identifier">mname</span> <span class="ruby-keyword kw">elsif</span> <span class="ruby-identifier">mname</span> <span class="ruby-operator">=~</span> <span class="ruby-regexp re">/\?$/</span> <span class="ruby-identifier">raise</span> <span class="ruby-constant">NoMethodError</span> <span class="ruby-comment cmt"># ?-methods are not created automatically</span> <span class="ruby-keyword kw">else</span> <span class="ruby-identifier">getter</span> = <span class="ruby-identifier">mname</span> <span class="ruby-identifier">setter</span> = <span class="ruby-identifier">mname</span> <span class="ruby-operator">+</span> <span class="ruby-value str">"="</span> <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">gsym</span> = <span class="ruby-identifier">getter</span>.<span class="ruby-identifier">intern</span> <span class="ruby-identifier">ssym</span> = <span class="ruby-identifier">setter</span>.<span class="ruby-identifier">intern</span> <span class="ruby-identifier">ivar</span> = <span class="ruby-value str">"@"</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">getter</span> <span class="ruby-identifier">setsyms</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">setter</span> <span class="ruby-identifier">table</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">getter</span> <span class="ruby-identifier">len</span> = <span class="ruby-identifier">args</span>.<span class="ruby-identifier">length</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">mname</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">getter</span> <span class="ruby-identifier">klass</span>.<span class="ruby-identifier">class_eval</span> <span class="ruby-keyword kw">do</span> <span class="ruby-comment cmt"># getter</span> <span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">getter</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-identifier">instance_variable_get</span>(<span class="ruby-identifier">ivar</span>) <span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">else</span> <span class="ruby-identifier">klass</span>.<span class="ruby-identifier">class_eval</span> <span class="ruby-keyword kw">do</span> <span class="ruby-comment cmt"># setter</span> <span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">setter</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-operator">*</span><span class="ruby-identifier">args</span><span class="ruby-operator">|</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">len</span> <span class="ruby-operator">!=</span> <span class="ruby-value">1</span> <span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-node">"Wrong # of arguments (#{len} for 1)"</span>, <span class="ruby-identifier">caller</span>(<span class="ruby-value">1</span>) <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">instance_variable_set</span>(<span class="ruby-identifier">ivar</span>,<span class="ruby-identifier">args</span>[<span class="ruby-value">0</span>]) <span class="ruby-identifier">instance_variable_get</span>(<span class="ruby-identifier">ivar</span>) <span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">mname</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">setter</span> <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">send</span>(<span class="ruby-identifier">setter</span>,<span class="ruby-operator">*</span><span class="ruby-identifier">args</span>) <span class="ruby-keyword kw">else</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">len</span> <span class="ruby-operator">==</span> <span class="ruby-value">0</span> <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">send</span>(<span class="ruby-identifier">getter</span>) <span class="ruby-keyword kw">else</span> <span class="ruby-identifier">raise</span> <span class="ruby-constant">NoMethodError</span>, <span class="ruby-node">"Undefined method '#{mname}' for #{self}"</span>, <span class="ruby-identifier">caller</span>(<span class="ruby-value">1</span>) <span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">end</span> <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">klass</span> <span class="ruby-keyword kw">end</span> </pre> </div> </div> </div> </div> </div> <div id="validator-badges"> <p><small><a href="http://validator.w3.org/check/referer">[Validate]</a></small></p> </div> </body> </html>