File: C:/Ruby27-x64/share/doc/ruby/html/Racc/GrammarFileParser.html
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<li ><a href="#method-c-new">::new</a>
<li ><a href="#method-c-parse">::parse</a>
<li ><a href="#method-c-parse_file">::parse_file</a>
<li ><a href="#method-i-add_rule">#add_rule</a>
<li ><a href="#method-i-add_rule_block">#add_rule_block</a>
<li ><a href="#method-i-add_user_code">#add_user_code</a>
<li ><a href="#method-i-canonical_label">#canonical_label</a>
<li ><a href="#method-i-embedded_action">#embedded_action</a>
<li ><a href="#method-i-location">#location</a>
<li ><a href="#method-i-next_token">#next_token</a>
<li ><a href="#method-i-on_error">#on_error</a>
<li ><a href="#method-i-parse">#parse</a>
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<main role="main" aria-labelledby="class-Racc::GrammarFileParser">
<h1 id="class-Racc::GrammarFileParser" class="class">
class Racc::GrammarFileParser
</h1>
<section class="description">
</section>
<section id="5Buntitled-5D" class="documentation-section">
<section class="constants-list">
<header>
<h3>Constants</h3>
</header>
<dl>
<dt id="USER_CODE_LABELS">USER_CODE_LABELS
<dd>
</dl>
</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">(debug_flags = DebugFlags.new)</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/grammarfileparser.rb, line 172</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>(<span class="ruby-identifier">debug_flags</span> = <span class="ruby-constant">DebugFlags</span>.<span class="ruby-identifier">new</span>)
<span class="ruby-ivar">@yydebug</span> = <span class="ruby-identifier">debug_flags</span>.<span class="ruby-identifier">parse</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-c-parse" class="method-detail ">
<div class="method-heading">
<span class="method-name">parse</span><span
class="method-args">(src, filename = '-', lineno = 1)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="parse-source">
<pre><span class="ruby-comment"># File lib/racc/grammarfileparser.rb, line 168</span>
<span class="ruby-keyword">def</span> <span class="ruby-constant">GrammarFileParser</span>.<span class="ruby-identifier ruby-title">parse</span>(<span class="ruby-identifier">src</span>, <span class="ruby-identifier">filename</span> = <span class="ruby-string">'-'</span>, <span class="ruby-identifier">lineno</span> = <span class="ruby-value">1</span>)
<span class="ruby-identifier">new</span>().<span class="ruby-identifier">parse</span>(<span class="ruby-identifier">src</span>, <span class="ruby-identifier">filename</span>, <span class="ruby-identifier">lineno</span>)
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-c-parse_file" class="method-detail ">
<div class="method-heading">
<span class="method-name">parse_file</span><span
class="method-args">(filename)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="parse_file-source">
<pre><span class="ruby-comment"># File lib/racc/grammarfileparser.rb, line 164</span>
<span class="ruby-keyword">def</span> <span class="ruby-constant">GrammarFileParser</span>.<span class="ruby-identifier ruby-title">parse_file</span>(<span class="ruby-identifier">filename</span>)
<span class="ruby-identifier">parse</span>(<span class="ruby-constant">File</span>.<span class="ruby-identifier">read</span>(<span class="ruby-identifier">filename</span>), <span class="ruby-identifier">filename</span>, <span class="ruby-value">1</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-parse" class="method-detail ">
<div class="method-heading">
<span class="method-name">parse</span><span
class="method-args">(src, filename = '-', lineno = 1)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="parse-source">
<pre><span class="ruby-comment"># File lib/racc/grammarfileparser.rb, line 176</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">parse</span>(<span class="ruby-identifier">src</span>, <span class="ruby-identifier">filename</span> = <span class="ruby-string">'-'</span>, <span class="ruby-identifier">lineno</span> = <span class="ruby-value">1</span>)
<span class="ruby-ivar">@filename</span> = <span class="ruby-identifier">filename</span>
<span class="ruby-ivar">@lineno</span> = <span class="ruby-identifier">lineno</span>
<span class="ruby-ivar">@scanner</span> = <span class="ruby-constant">GrammarFileScanner</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">src</span>, <span class="ruby-ivar">@filename</span>)
<span class="ruby-ivar">@scanner</span>.<span class="ruby-identifier">debug</span> = <span class="ruby-ivar">@yydebug</span>
<span class="ruby-ivar">@grammar</span> = <span class="ruby-constant">Grammar</span>.<span class="ruby-identifier">new</span>
<span class="ruby-ivar">@result</span> = <span class="ruby-constant">Result</span>.<span class="ruby-identifier">new</span>(<span class="ruby-ivar">@grammar</span>)
<span class="ruby-ivar">@embedded_action_seq</span> = <span class="ruby-value">0</span>
<span class="ruby-identifier">yyparse</span> <span class="ruby-ivar">@scanner</span>, <span class="ruby-value">:yylex</span>
<span class="ruby-identifier">parse_user_code</span>
<span class="ruby-ivar">@result</span>.<span class="ruby-identifier">grammar</span>.<span class="ruby-identifier">init</span>
<span class="ruby-ivar">@result</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
</section>
<section id="private-instance-5Buntitled-5D-method-details" class="method-section">
<header>
<h3>Private Instance Methods</h3>
</header>
<div id="method-i-add_rule" class="method-detail ">
<div class="method-heading">
<span class="method-name">add_rule</span><span
class="method-args">(target, list, sprec)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="add_rule-source">
<pre><span class="ruby-comment"># File lib/racc/grammarfileparser.rb, line 235</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">add_rule</span>(<span class="ruby-identifier">target</span>, <span class="ruby-identifier">list</span>, <span class="ruby-identifier">sprec</span>)
<span class="ruby-keyword">if</span> <span class="ruby-identifier">list</span>.<span class="ruby-identifier">last</span>.<span class="ruby-identifier">kind_of?</span>(<span class="ruby-constant">UserAction</span>)
<span class="ruby-identifier">act</span> = <span class="ruby-identifier">list</span>.<span class="ruby-identifier">pop</span>
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">act</span> = <span class="ruby-constant">UserAction</span>.<span class="ruby-identifier">empty</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">list</span>.<span class="ruby-identifier">map!</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">s</span><span class="ruby-operator">|</span> <span class="ruby-identifier">s</span>.<span class="ruby-identifier">kind_of?</span>(<span class="ruby-constant">UserAction</span>) <span class="ruby-operator">?</span> <span class="ruby-identifier">embedded_action</span>(<span class="ruby-identifier">s</span>) <span class="ruby-operator">:</span> <span class="ruby-identifier">s</span> }
<span class="ruby-identifier">rule</span> = <span class="ruby-constant">Rule</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">target</span>, <span class="ruby-identifier">list</span>, <span class="ruby-identifier">act</span>)
<span class="ruby-identifier">rule</span>.<span class="ruby-identifier">specified_prec</span> = <span class="ruby-identifier">sprec</span>
<span class="ruby-ivar">@grammar</span>.<span class="ruby-identifier">add</span> <span class="ruby-identifier">rule</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-add_rule_block" class="method-detail ">
<div class="method-heading">
<span class="method-name">add_rule_block</span><span
class="method-args">(list)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="add_rule_block-source">
<pre><span class="ruby-comment"># File lib/racc/grammarfileparser.rb, line 211</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">add_rule_block</span>(<span class="ruby-identifier">list</span>)
<span class="ruby-identifier">sprec</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-identifier">target</span> = <span class="ruby-identifier">list</span>.<span class="ruby-identifier">shift</span>
<span class="ruby-keyword">case</span> <span class="ruby-identifier">target</span>
<span class="ruby-keyword">when</span> <span class="ruby-constant">OrMark</span>, <span class="ruby-constant">UserAction</span>, <span class="ruby-constant">Prec</span>
<span class="ruby-identifier">raise</span> <span class="ruby-constant">CompileError</span>, <span class="ruby-node">"#{target.lineno}: unexpected symbol #{target.name}"</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">curr</span> = []
<span class="ruby-identifier">list</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">i</span><span class="ruby-operator">|</span>
<span class="ruby-keyword">case</span> <span class="ruby-identifier">i</span>
<span class="ruby-keyword">when</span> <span class="ruby-constant">OrMark</span>
<span class="ruby-identifier">add_rule</span> <span class="ruby-identifier">target</span>, <span class="ruby-identifier">curr</span>, <span class="ruby-identifier">sprec</span>
<span class="ruby-identifier">curr</span> = []
<span class="ruby-identifier">sprec</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-keyword">when</span> <span class="ruby-constant">Prec</span>
<span class="ruby-identifier">raise</span> <span class="ruby-constant">CompileError</span>, <span class="ruby-string">"'=<prec>' used twice in one rule"</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">sprec</span>
<span class="ruby-identifier">sprec</span> = <span class="ruby-identifier">i</span>.<span class="ruby-identifier">symbol</span>
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">curr</span>.<span class="ruby-identifier">push</span> <span class="ruby-identifier">i</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">add_rule</span> <span class="ruby-identifier">target</span>, <span class="ruby-identifier">curr</span>, <span class="ruby-identifier">sprec</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-add_user_code" class="method-detail ">
<div class="method-heading">
<span class="method-name">add_user_code</span><span
class="method-args">(label, src)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="add_user_code-source">
<pre><span class="ruby-comment"># File lib/racc/grammarfileparser.rb, line 288</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">add_user_code</span>(<span class="ruby-identifier">label</span>, <span class="ruby-identifier">src</span>)
<span class="ruby-ivar">@result</span>.<span class="ruby-identifier">params</span>.<span class="ruby-identifier">send</span>(<span class="ruby-constant">USER_CODE_LABELS</span>[<span class="ruby-identifier">label</span>]).<span class="ruby-identifier">push</span> <span class="ruby-identifier">src</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-canonical_label" class="method-detail ">
<div class="method-heading">
<span class="method-name">canonical_label</span><span
class="method-args">(src)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="canonical_label-source">
<pre><span class="ruby-comment"># File lib/racc/grammarfileparser.rb, line 280</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">canonical_label</span>(<span class="ruby-identifier">src</span>)
<span class="ruby-identifier">label</span> = <span class="ruby-identifier">src</span>.<span class="ruby-identifier">to_s</span>.<span class="ruby-identifier">strip</span>.<span class="ruby-identifier">downcase</span>.<span class="ruby-identifier">slice</span>(<span class="ruby-regexp">/\w+/</span>)
<span class="ruby-keyword">unless</span> <span class="ruby-constant">USER_CODE_LABELS</span>.<span class="ruby-identifier">key?</span>(<span class="ruby-identifier">label</span>)
<span class="ruby-identifier">raise</span> <span class="ruby-constant">CompileError</span>, <span class="ruby-node">"unknown user code type: #{label.inspect}"</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">label</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-embedded_action" class="method-detail ">
<div class="method-heading">
<span class="method-name">embedded_action</span><span
class="method-args">(act)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="embedded_action-source">
<pre><span class="ruby-comment"># File lib/racc/grammarfileparser.rb, line 247</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">embedded_action</span>(<span class="ruby-identifier">act</span>)
<span class="ruby-identifier">sym</span> = <span class="ruby-ivar">@grammar</span>.<span class="ruby-identifier">intern</span>(<span class="ruby-node">"@#{@embedded_action_seq += 1}"</span>.<span class="ruby-identifier">intern</span>, <span class="ruby-keyword">true</span>)
<span class="ruby-ivar">@grammar</span>.<span class="ruby-identifier">add</span> <span class="ruby-constant">Rule</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">sym</span>, [], <span class="ruby-identifier">act</span>)
<span class="ruby-identifier">sym</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-location" class="method-detail ">
<div class="method-heading">
<span class="method-name">location</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="location-source">
<pre><span class="ruby-comment"># File lib/racc/grammarfileparser.rb, line 207</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">location</span>
<span class="ruby-node">"#{@filename}:#{@lineno - 1 + @scanner.lineno}"</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-next_token" class="method-detail ">
<div class="method-heading">
<span class="method-name">next_token</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="next_token-source">
<pre><span class="ruby-comment"># File lib/racc/grammarfileparser.rb, line 192</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">next_token</span>
<span class="ruby-ivar">@scanner</span>.<span class="ruby-identifier">scan</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-on_error" class="method-detail ">
<div class="method-heading">
<span class="method-name">on_error</span><span
class="method-args">(tok, val, _values)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="on_error-source">
<pre><span class="ruby-comment"># File lib/racc/grammarfileparser.rb, line 196</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">on_error</span>(<span class="ruby-identifier">tok</span>, <span class="ruby-identifier">val</span>, <span class="ruby-identifier">_values</span>)
<span class="ruby-keyword">if</span> <span class="ruby-identifier">val</span>.<span class="ruby-identifier">respond_to?</span>(<span class="ruby-value">:id2name</span>)
<span class="ruby-identifier">v</span> = <span class="ruby-identifier">val</span>.<span class="ruby-identifier">id2name</span>
<span class="ruby-keyword">elsif</span> <span class="ruby-identifier">val</span>.<span class="ruby-identifier">kind_of?</span>(<span class="ruby-constant">String</span>)
<span class="ruby-identifier">v</span> = <span class="ruby-identifier">val</span>
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">v</span> = <span class="ruby-identifier">val</span>.<span class="ruby-identifier">inspect</span>
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">raise</span> <span class="ruby-constant">CompileError</span>, <span class="ruby-node">"#{location()}: unexpected token '#{v}'"</span>
<span class="ruby-keyword">end</span></pre>
</div>
</div>
</div>
<div id="method-i-parse_user_code" class="method-detail ">
<div class="method-heading">
<span class="method-name">parse_user_code</span><span
class="method-args">()</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<p>User Code Block</p>
<div class="method-source-code" id="parse_user_code-source">
<pre><span class="ruby-comment"># File lib/racc/grammarfileparser.rb, line 257</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">parse_user_code</span>
<span class="ruby-identifier">line</span> = <span class="ruby-ivar">@scanner</span>.<span class="ruby-identifier">lineno</span>
<span class="ruby-identifier">_</span>, <span class="ruby-operator">*</span><span class="ruby-identifier">blocks</span> = <span class="ruby-operator">*</span><span class="ruby-ivar">@scanner</span>.<span class="ruby-identifier">epilogue</span>.<span class="ruby-identifier">split</span>(<span class="ruby-regexp">/^----/</span>)
<span class="ruby-identifier">blocks</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">block</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">header</span>, <span class="ruby-operator">*</span><span class="ruby-identifier">body</span> = <span class="ruby-identifier">block</span>.<span class="ruby-identifier">lines</span>.<span class="ruby-identifier">to_a</span>
<span class="ruby-identifier">label0</span>, <span class="ruby-identifier">pathes</span> = <span class="ruby-operator">*</span><span class="ruby-identifier">header</span>.<span class="ruby-identifier">sub</span>(<span class="ruby-regexp">/\A-+/</span>, <span class="ruby-string">''</span>).<span class="ruby-identifier">split</span>(<span class="ruby-string">'='</span>, <span class="ruby-value">2</span>)
<span class="ruby-identifier">label</span> = <span class="ruby-identifier">canonical_label</span>(<span class="ruby-identifier">label0</span>)
(<span class="ruby-identifier">pathes</span> <span class="ruby-operator">?</span> <span class="ruby-identifier">pathes</span>.<span class="ruby-identifier">strip</span>.<span class="ruby-identifier">split</span>(<span class="ruby-string">' '</span>) <span class="ruby-operator">:</span> []).<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">path</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">add_user_code</span> <span class="ruby-identifier">label</span>, <span class="ruby-constant">SourceText</span>.<span class="ruby-identifier">new</span>(<span class="ruby-constant">File</span>.<span class="ruby-identifier">read</span>(<span class="ruby-identifier">path</span>), <span class="ruby-identifier">path</span>, <span class="ruby-value">1</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-identifier">add_user_code</span> <span class="ruby-identifier">label</span>, <span class="ruby-constant">SourceText</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">body</span>.<span class="ruby-identifier">join</span>(<span class="ruby-string">''</span>), <span class="ruby-ivar">@filename</span>, <span class="ruby-identifier">line</span> <span class="ruby-operator">+</span> <span class="ruby-value">1</span>)
<span class="ruby-identifier">line</span> <span class="ruby-operator">+=</span> (<span class="ruby-value">1</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">body</span>.<span class="ruby-identifier">size</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
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