File: C:/Ruby27-x64/share/doc/ruby/html/IRB/WorkSpace.html
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<li ><a href="#method-c-new">::new</a>
<li ><a href="#method-i-__evaluate__">#__evaluate__</a>
<li ><a href="#method-i-code_around_binding">#code_around_binding</a>
<li ><a href="#method-i-evaluate">#evaluate</a>
<li ><a href="#method-i-filter_backtrace">#filter_backtrace</a>
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<main role="main" aria-labelledby="class-IRB::WorkSpace">
<h1 id="class-IRB::WorkSpace" class="class">
class IRB::WorkSpace
</h1>
<section class="description">
</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-binding" class="method-detail">
<div class="method-heading attribute-method-heading">
<span class="method-name">binding</span><span
class="attribute-access-type">[R]</span>
</div>
<div class="method-description">
<p>The <a href="../Binding.html"><code>Binding</code></a> of this workspace</p>
</div>
</div>
<div id="attribute-i-main" class="method-detail">
<div class="method-heading attribute-method-heading">
<span class="method-name">main</span><span
class="attribute-access-type">[R]</span>
</div>
<div class="method-description">
<p>The top-level workspace of this context, also available as <code>IRB.conf[:__MAIN__]</code></p>
</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">(*main)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<p>Creates a new workspace.</p>
<p>set self to main if specified, otherwise inherit main from TOPLEVEL_BINDING.</p>
<div class="method-source-code" id="new-source">
<pre><span class="ruby-comment"># File lib/irb/workspace.rb, line 21</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>(<span class="ruby-operator">*</span><span class="ruby-identifier">main</span>)
<span class="ruby-keyword">if</span> <span class="ruby-identifier">main</span>[<span class="ruby-value">0</span>].<span class="ruby-identifier">kind_of?</span>(<span class="ruby-constant">Binding</span>)
<span class="ruby-ivar">@binding</span> = <span class="ruby-identifier">main</span>.<span class="ruby-identifier">shift</span>
<span class="ruby-keyword">elsif</span> <span class="ruby-constant">IRB</span>.<span class="ruby-identifier">conf</span>[<span class="ruby-value">:SINGLE_IRB</span>]
<span class="ruby-ivar">@binding</span> = <span class="ruby-constant">TOPLEVEL_BINDING</span>
<span class="ruby-keyword">else</span>
<span class="ruby-keyword">case</span> <span class="ruby-constant">IRB</span>.<span class="ruby-identifier">conf</span>[<span class="ruby-value">:CONTEXT_MODE</span>]
<span class="ruby-keyword">when</span> <span class="ruby-value">0</span> <span class="ruby-comment"># binding in proc on TOPLEVEL_BINDING</span>
<span class="ruby-ivar">@binding</span> = <span class="ruby-identifier">eval</span>(<span class="ruby-string">"proc{binding}.call"</span>,
<span class="ruby-constant">TOPLEVEL_BINDING</span>,
<span class="ruby-keyword">__FILE__</span>,
<span class="ruby-keyword">__LINE__</span>)
<span class="ruby-keyword">when</span> <span class="ruby-value">1</span> <span class="ruby-comment"># binding in loaded file</span>
<span class="ruby-identifier">require</span> <span class="ruby-string">"tempfile"</span>
<span class="ruby-identifier">f</span> = <span class="ruby-constant">Tempfile</span>.<span class="ruby-identifier">open</span>(<span class="ruby-string">"irb-binding"</span>)
<span class="ruby-identifier">f</span>.<span class="ruby-identifier">print</span> <span class="ruby-identifier"><<EOF</span>
<span class="ruby-value"> $binding = binding
</span><span class="ruby-identifier">EOF</span>
<span class="ruby-identifier">f</span>.<span class="ruby-identifier">close</span>
<span class="ruby-identifier">load</span> <span class="ruby-identifier">f</span>.<span class="ruby-identifier">path</span>
<span class="ruby-ivar">@binding</span> = <span class="ruby-identifier">$binding</span>
<span class="ruby-keyword">when</span> <span class="ruby-value">2</span> <span class="ruby-comment"># binding in loaded file(thread use)</span>
<span class="ruby-keyword">unless</span> <span class="ruby-keyword">defined?</span> <span class="ruby-constant">BINDING_QUEUE</span>
<span class="ruby-constant">IRB</span>.<span class="ruby-identifier">const_set</span>(<span class="ruby-value">:BINDING_QUEUE</span>, <span class="ruby-constant">Thread</span><span class="ruby-operator">::</span><span class="ruby-constant">SizedQueue</span>.<span class="ruby-identifier">new</span>(<span class="ruby-value">1</span>))
<span class="ruby-constant">Thread</span>.<span class="ruby-identifier">abort_on_exception</span> = <span class="ruby-keyword">true</span>
<span class="ruby-constant">Thread</span>.<span class="ruby-identifier">start</span> <span class="ruby-keyword">do</span>
<span class="ruby-identifier">eval</span> <span class="ruby-string">"require \"irb/ws-for-case-2\""</span>, <span class="ruby-constant">TOPLEVEL_BINDING</span>, <span class="ruby-keyword">__FILE__</span>, <span class="ruby-keyword">__LINE__</span>
<span class="ruby-keyword">end</span>
<span class="ruby-constant">Thread</span>.<span class="ruby-identifier">pass</span>
<span class="ruby-keyword">end</span>
<span class="ruby-ivar">@binding</span> = <span class="ruby-constant">BINDING_QUEUE</span>.<span class="ruby-identifier">pop</span>
<span class="ruby-keyword">when</span> <span class="ruby-value">3</span> <span class="ruby-comment"># binding in function on TOPLEVEL_BINDING(default)</span>
<span class="ruby-ivar">@binding</span> = <span class="ruby-identifier">eval</span>(<span class="ruby-string">"self.class.send(:remove_method, :irb_binding) if defined?(irb_binding); private; def irb_binding; binding; end; irb_binding"</span>,
<span class="ruby-constant">TOPLEVEL_BINDING</span>,
<span class="ruby-keyword">__FILE__</span>,
<span class="ruby-keyword">__LINE__</span> <span class="ruby-operator">-</span> <span class="ruby-value">3</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">main</span>.<span class="ruby-identifier">empty?</span>
<span class="ruby-ivar">@main</span> = <span class="ruby-identifier">eval</span>(<span class="ruby-string">"self"</span>, <span class="ruby-ivar">@binding</span>)
<span class="ruby-keyword">else</span>
<span class="ruby-ivar">@main</span> = <span class="ruby-identifier">main</span>[<span class="ruby-value">0</span>]
<span class="ruby-keyword">end</span>
<span class="ruby-constant">IRB</span>.<span class="ruby-identifier">conf</span>[<span class="ruby-value">:__MAIN__</span>] = <span class="ruby-ivar">@main</span>
<span class="ruby-keyword">unless</span> <span class="ruby-identifier">main</span>.<span class="ruby-identifier">empty?</span>
<span class="ruby-keyword">case</span> <span class="ruby-ivar">@main</span>
<span class="ruby-keyword">when</span> <span class="ruby-constant">Module</span>
<span class="ruby-ivar">@binding</span> = <span class="ruby-identifier">eval</span>(<span class="ruby-string">"IRB.conf[:__MAIN__].module_eval('binding', __FILE__, __LINE__)"</span>, <span class="ruby-ivar">@binding</span>, <span class="ruby-keyword">__FILE__</span>, <span class="ruby-keyword">__LINE__</span>)
<span class="ruby-keyword">else</span>
<span class="ruby-keyword">begin</span>
<span class="ruby-ivar">@binding</span> = <span class="ruby-identifier">eval</span>(<span class="ruby-string">"IRB.conf[:__MAIN__].instance_eval('binding', __FILE__, __LINE__)"</span>, <span class="ruby-ivar">@binding</span>, <span class="ruby-keyword">__FILE__</span>, <span class="ruby-keyword">__LINE__</span>)
<span class="ruby-keyword">rescue</span> <span class="ruby-constant">TypeError</span>
<span class="ruby-identifier">fail</span> <span class="ruby-constant">CantChangeBinding</span>, <span class="ruby-ivar">@main</span>.<span class="ruby-identifier">inspect</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">case</span> <span class="ruby-ivar">@main</span>
<span class="ruby-keyword">when</span> <span class="ruby-constant">Object</span>
<span class="ruby-identifier">use_delegator</span> = <span class="ruby-ivar">@main</span>.<span class="ruby-identifier">frozen?</span>
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">use_delegator</span> = <span class="ruby-keyword">true</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">use_delegator</span>
<span class="ruby-ivar">@main</span> = <span class="ruby-constant">SimpleDelegator</span>.<span class="ruby-identifier">new</span>(<span class="ruby-ivar">@main</span>)
<span class="ruby-constant">IRB</span>.<span class="ruby-identifier">conf</span>[<span class="ruby-value">:__MAIN__</span>] = <span class="ruby-ivar">@main</span>
<span class="ruby-ivar">@main</span>.<span class="ruby-identifier">singleton_class</span>.<span class="ruby-identifier">class_eval</span> <span class="ruby-keyword">do</span>
<span class="ruby-identifier">private</span>
<span class="ruby-identifier">define_method</span>(<span class="ruby-value">:exit</span>) <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-operator">*</span><span class="ruby-identifier">a</span>, <span class="ruby-operator">&</span><span class="ruby-identifier">b</span><span class="ruby-operator">|</span>
<span class="ruby-comment"># Do nothing, will be overridden</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">define_method</span>(<span class="ruby-value">:binding</span>, <span class="ruby-constant">Kernel</span>.<span class="ruby-identifier">instance_method</span>(<span class="ruby-value">:binding</span>))
<span class="ruby-identifier">define_method</span>(<span class="ruby-value">:local_variables</span>, <span class="ruby-constant">Kernel</span>.<span class="ruby-identifier">instance_method</span>(<span class="ruby-value">:local_variables</span>))
<span class="ruby-keyword">end</span>
<span class="ruby-ivar">@binding</span> = <span class="ruby-identifier">eval</span>(<span class="ruby-string">"IRB.conf[:__MAIN__].instance_eval('binding', __FILE__, __LINE__)"</span>, <span class="ruby-ivar">@binding</span>, <span class="ruby-operator">*</span><span class="ruby-ivar">@binding</span>.<span class="ruby-identifier">source_location</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-ivar">@binding</span>.<span class="ruby-identifier">local_variable_set</span>(<span class="ruby-value">:_</span>, <span class="ruby-keyword">nil</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-__evaluate__" class="method-detail method-alias">
<div class="method-heading">
<span class="method-name">__evaluate__</span><span
class="method-args">(context, statements, file = nil, line = nil)</span>
</div>
<div class="method-description">
</div>
<div class="aliases">
Alias for: <a href="WorkSpace.html#method-i-evaluate">evaluate</a>
</div>
</div>
<div id="method-i-code_around_binding" class="method-detail ">
<div class="method-heading">
<span class="method-name">code_around_binding</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="code_around_binding-source">
<pre><span class="ruby-comment"># File lib/irb/workspace.rb, line 138</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">code_around_binding</span>
<span class="ruby-keyword">if</span> <span class="ruby-ivar">@binding</span>.<span class="ruby-identifier">respond_to?</span>(<span class="ruby-value">:source_location</span>)
<span class="ruby-identifier">file</span>, <span class="ruby-identifier">pos</span> = <span class="ruby-ivar">@binding</span>.<span class="ruby-identifier">source_location</span>
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">file</span>, <span class="ruby-identifier">pos</span> = <span class="ruby-ivar">@binding</span>.<span class="ruby-identifier">eval</span>(<span class="ruby-string">'[__FILE__, __LINE__]'</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">if</span> <span class="ruby-keyword">defined?</span>(<span class="ruby-operator">::</span><span class="ruby-constant">SCRIPT_LINES__</span>[<span class="ruby-identifier">file</span>]) <span class="ruby-operator">&&</span> <span class="ruby-identifier">lines</span> = <span class="ruby-operator">::</span><span class="ruby-constant">SCRIPT_LINES__</span>[<span class="ruby-identifier">file</span>]
<span class="ruby-identifier">code</span> = <span class="ruby-operator">::</span><span class="ruby-constant">SCRIPT_LINES__</span>[<span class="ruby-identifier">file</span>].<span class="ruby-identifier">join</span>(<span class="ruby-string">''</span>)
<span class="ruby-keyword">else</span>
<span class="ruby-keyword">begin</span>
<span class="ruby-identifier">code</span> = <span class="ruby-constant">File</span>.<span class="ruby-identifier">read</span>(<span class="ruby-identifier">file</span>)
<span class="ruby-keyword">rescue</span> <span class="ruby-constant">SystemCallError</span>
<span class="ruby-keyword">return</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-comment"># NOT using #use_colorize? of IRB.conf[:MAIN_CONTEXT] because this method may be called before IRB::Irb#run</span>
<span class="ruby-identifier">use_colorize</span> = <span class="ruby-constant">IRB</span>.<span class="ruby-identifier">conf</span>.<span class="ruby-identifier">fetch</span>(<span class="ruby-value">:USE_COLORIZE</span>, <span class="ruby-keyword">true</span>)
<span class="ruby-keyword">if</span> <span class="ruby-identifier">use_colorize</span>
<span class="ruby-identifier">lines</span> = <span class="ruby-constant">Color</span>.<span class="ruby-identifier">colorize_code</span>(<span class="ruby-identifier">code</span>).<span class="ruby-identifier">lines</span>
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">lines</span> = <span class="ruby-identifier">code</span>.<span class="ruby-identifier">lines</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">pos</span> <span class="ruby-operator">-=</span> <span class="ruby-value">1</span>
<span class="ruby-identifier">start_pos</span> = [<span class="ruby-identifier">pos</span> <span class="ruby-operator">-</span> <span class="ruby-value">5</span>, <span class="ruby-value">0</span>].<span class="ruby-identifier">max</span>
<span class="ruby-identifier">end_pos</span> = [<span class="ruby-identifier">pos</span> <span class="ruby-operator">+</span> <span class="ruby-value">5</span>, <span class="ruby-identifier">lines</span>.<span class="ruby-identifier">size</span> <span class="ruby-operator">-</span> <span class="ruby-value">1</span>].<span class="ruby-identifier">min</span>
<span class="ruby-keyword">if</span> <span class="ruby-identifier">use_colorize</span>
<span class="ruby-identifier">fmt</span> = <span class="ruby-node">" %2s #{Color.colorize("%#{end_pos.to_s.length}d", [:BLUE, :BOLD])}: %s"</span>
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">fmt</span> = <span class="ruby-node">" %2s %#{end_pos.to_s.length}d: %s"</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">body</span> = (<span class="ruby-identifier">start_pos</span><span class="ruby-operator">..</span><span class="ruby-identifier">end_pos</span>).<span class="ruby-identifier">map</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">current_pos</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">sprintf</span>(<span class="ruby-identifier">fmt</span>, <span class="ruby-identifier">pos</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">current_pos</span> <span class="ruby-operator">?</span> <span class="ruby-string">'=>'</span> <span class="ruby-operator">:</span> <span class="ruby-string">''</span>, <span class="ruby-identifier">current_pos</span> <span class="ruby-operator">+</span> <span class="ruby-value">1</span>, <span class="ruby-identifier">lines</span>[<span class="ruby-identifier">current_pos</span>])
<span class="ruby-keyword">end</span>.<span class="ruby-identifier">join</span>(<span class="ruby-string">""</span>)
<span class="ruby-node">"\nFrom: #{file} @ line #{pos + 1} :\n\n#{body}#{Color.clear}\n"</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-evaluate" class="method-detail ">
<div class="method-heading">
<span class="method-name">evaluate</span><span
class="method-args">(context, statements, file = nil, line = nil)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<p>Evaluate the context of this workspace and use the <a href="../Tracer.html"><code>Tracer</code></a> library to output the exact lines of code are being executed in chronological order.</p>
<p>See <code>lib/tracer.rb</code> for more information.</p>
<div class="method-source-code" id="evaluate-source">
<pre><span class="ruby-comment"># File lib/irb/ext/tracer.rb, line 69</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">evaluate</span>(<span class="ruby-identifier">context</span>, <span class="ruby-identifier">statements</span>, <span class="ruby-identifier">file</span> = <span class="ruby-keyword">nil</span>, <span class="ruby-identifier">line</span> = <span class="ruby-keyword">nil</span>)
<span class="ruby-keyword">if</span> <span class="ruby-identifier">context</span>.<span class="ruby-identifier">use_tracer?</span> <span class="ruby-operator">&&</span> <span class="ruby-identifier">file</span> <span class="ruby-operator">!=</span> <span class="ruby-keyword">nil</span> <span class="ruby-operator">&&</span> <span class="ruby-identifier">line</span> <span class="ruby-operator">!=</span> <span class="ruby-keyword">nil</span>
<span class="ruby-constant">Tracer</span>.<span class="ruby-identifier">on</span>
<span class="ruby-keyword">begin</span>
<span class="ruby-identifier">__evaluate__</span>(<span class="ruby-identifier">context</span>, <span class="ruby-identifier">statements</span>, <span class="ruby-identifier">file</span>, <span class="ruby-identifier">line</span>)
<span class="ruby-keyword">ensure</span>
<span class="ruby-constant">Tracer</span>.<span class="ruby-identifier">off</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">__evaluate__</span>(<span class="ruby-identifier">context</span>, <span class="ruby-identifier">statements</span>, <span class="ruby-identifier">file</span> <span class="ruby-operator">||</span> <span class="ruby-keyword">__FILE__</span>, <span class="ruby-identifier">line</span> <span class="ruby-operator">||</span> <span class="ruby-keyword">__LINE__</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
<div class="aliases">
Also aliased as: <a href="WorkSpace.html#method-i-__evaluate__">__evaluate__</a>
</div>
</div>
<div id="method-i-filter_backtrace" class="method-detail ">
<div class="method-heading">
<span class="method-name">filter_backtrace</span><span
class="method-args">(bt)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<p>error message manipulator</p>
<div class="method-source-code" id="filter_backtrace-source">
<pre><span class="ruby-comment"># File lib/irb/workspace.rb, line 126</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">filter_backtrace</span>(<span class="ruby-identifier">bt</span>)
<span class="ruby-keyword">return</span> <span class="ruby-keyword">nil</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">bt</span> <span class="ruby-operator">=~</span> <span class="ruby-regexp">/\/irb\/.*\.rb/</span>
<span class="ruby-keyword">return</span> <span class="ruby-keyword">nil</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">bt</span> <span class="ruby-operator">=~</span> <span class="ruby-regexp">/\/irb\.rb/</span>
<span class="ruby-keyword">case</span> <span class="ruby-constant">IRB</span>.<span class="ruby-identifier">conf</span>[<span class="ruby-value">:CONTEXT_MODE</span>]
<span class="ruby-keyword">when</span> <span class="ruby-value">1</span>
<span class="ruby-keyword">return</span> <span class="ruby-keyword">nil</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">bt</span> <span class="ruby-operator">=~</span> <span class="ruby-regexp">%r!/tmp/irb-binding!</span>
<span class="ruby-keyword">when</span> <span class="ruby-value">3</span>
<span class="ruby-identifier">bt</span> = <span class="ruby-identifier">bt</span>.<span class="ruby-identifier">sub</span>(<span class="ruby-regexp">/:\s*in `irb_binding'/</span>, <span class="ruby-string">''</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">bt</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-local_variable_get" class="method-detail ">
<div class="method-heading">
<span class="method-name">local_variable_get</span><span
class="method-args">(name)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="local_variable_get-source">
<pre><span class="ruby-comment"># File lib/irb/workspace.rb, line 121</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">local_variable_get</span>(<span class="ruby-identifier">name</span>)
<span class="ruby-ivar">@binding</span>.<span class="ruby-identifier">local_variable_get</span>(<span class="ruby-identifier">name</span>)
<span class="ruby-keyword">end</span></pre>
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<div id="method-i-local_variable_set" class="method-detail ">
<div class="method-heading">
<span class="method-name">local_variable_set</span><span
class="method-args">(name, value)</span>
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<div class="method-description">
<div class="method-source-code" id="local_variable_set-source">
<pre><span class="ruby-comment"># File lib/irb/workspace.rb, line 117</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">local_variable_set</span>(<span class="ruby-identifier">name</span>, <span class="ruby-identifier">value</span>)
<span class="ruby-ivar">@binding</span>.<span class="ruby-identifier">local_variable_set</span>(<span class="ruby-identifier">name</span>, <span class="ruby-identifier">value</span>)
<span class="ruby-keyword">end</span></pre>
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