File: C:/Ruby27-x64/share/doc/ruby/html/REXML/Parsers/TreeParser.html
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<li ><a href="#method-i-parse">#parse</a>
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<h1 id="class-REXML::Parsers::TreeParser" class="class">
class REXML::Parsers::TreeParser
</h1>
<section class="description">
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<section id="5Buntitled-5D" class="documentation-section">
<section id="public-class-5Buntitled-5D-method-details" class="method-section">
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<h3>Public Class Methods</h3>
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<div id="method-c-new" class="method-detail ">
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<span class="method-name">new</span><span
class="method-args">( source, build_context = Document.new )</span>
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<pre><span class="ruby-comment"># File lib/rexml/parsers/treeparser.rb, line 8</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>( <span class="ruby-identifier">source</span>, <span class="ruby-identifier">build_context</span> = <span class="ruby-constant">Document</span>.<span class="ruby-identifier">new</span> )
<span class="ruby-ivar">@build_context</span> = <span class="ruby-identifier">build_context</span>
<span class="ruby-ivar">@parser</span> = <span class="ruby-constant">Parsers</span><span class="ruby-operator">::</span><span class="ruby-constant">BaseParser</span>.<span class="ruby-identifier">new</span>( <span class="ruby-identifier">source</span> )
<span class="ruby-keyword">end</span></pre>
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<h3>Public Instance Methods</h3>
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<div id="method-i-add_listener" class="method-detail ">
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<span class="method-name">add_listener</span><span
class="method-args">( listener )</span>
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<div class="method-description">
<div class="method-source-code" id="add_listener-source">
<pre><span class="ruby-comment"># File lib/rexml/parsers/treeparser.rb, line 13</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">add_listener</span>( <span class="ruby-identifier">listener</span> )
<span class="ruby-ivar">@parser</span>.<span class="ruby-identifier">add_listener</span>( <span class="ruby-identifier">listener</span> )
<span class="ruby-keyword">end</span></pre>
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<div id="method-i-parse" class="method-detail ">
<div class="method-heading">
<span class="method-name">parse</span><span
class="method-args">()</span>
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<div class="method-description">
<div class="method-source-code" id="parse-source">
<pre><span class="ruby-comment"># File lib/rexml/parsers/treeparser.rb, line 17</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">parse</span>
<span class="ruby-identifier">tag_stack</span> = []
<span class="ruby-identifier">in_doctype</span> = <span class="ruby-keyword">false</span>
<span class="ruby-identifier">entities</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-keyword">begin</span>
<span class="ruby-keyword">while</span> <span class="ruby-keyword">true</span>
<span class="ruby-identifier">event</span> = <span class="ruby-ivar">@parser</span>.<span class="ruby-identifier">pull</span>
<span class="ruby-comment">#STDERR.puts "TREEPARSER GOT #{event.inspect}"</span>
<span class="ruby-keyword">case</span> <span class="ruby-identifier">event</span>[<span class="ruby-value">0</span>]
<span class="ruby-keyword">when</span> <span class="ruby-value">:end_document</span>
<span class="ruby-keyword">unless</span> <span class="ruby-identifier">tag_stack</span>.<span class="ruby-identifier">empty?</span>
<span class="ruby-identifier">raise</span> <span class="ruby-constant">ParseException</span>.<span class="ruby-identifier">new</span>(<span class="ruby-node">"No close tag for #{@build_context.xpath}"</span>,
<span class="ruby-ivar">@parser</span>.<span class="ruby-identifier">source</span>, <span class="ruby-ivar">@parser</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">return</span>
<span class="ruby-keyword">when</span> <span class="ruby-value">:start_element</span>
<span class="ruby-identifier">tag_stack</span>.<span class="ruby-identifier">push</span>(<span class="ruby-identifier">event</span>[<span class="ruby-value">1</span>])
<span class="ruby-identifier">el</span> = <span class="ruby-ivar">@build_context</span> = <span class="ruby-ivar">@build_context</span>.<span class="ruby-identifier">add_element</span>( <span class="ruby-identifier">event</span>[<span class="ruby-value">1</span>] )
<span class="ruby-identifier">event</span>[<span class="ruby-value">2</span>].<span class="ruby-identifier">each</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">key</span>, <span class="ruby-identifier">value</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">el</span>.<span class="ruby-identifier">attributes</span>[<span class="ruby-identifier">key</span>]=<span class="ruby-constant">Attribute</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">key</span>,<span class="ruby-identifier">value</span>,<span class="ruby-keyword">self</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">when</span> <span class="ruby-value">:end_element</span>
<span class="ruby-identifier">tag_stack</span>.<span class="ruby-identifier">pop</span>
<span class="ruby-ivar">@build_context</span> = <span class="ruby-ivar">@build_context</span>.<span class="ruby-identifier">parent</span>
<span class="ruby-keyword">when</span> <span class="ruby-value">:text</span>
<span class="ruby-keyword">if</span> <span class="ruby-keyword">not</span> <span class="ruby-identifier">in_doctype</span>
<span class="ruby-keyword">if</span> <span class="ruby-ivar">@build_context</span>[<span class="ruby-value">-1</span>].<span class="ruby-identifier">instance_of?</span> <span class="ruby-constant">Text</span>
<span class="ruby-ivar">@build_context</span>[<span class="ruby-value">-1</span>] <span class="ruby-operator"><<</span> <span class="ruby-identifier">event</span>[<span class="ruby-value">1</span>]
<span class="ruby-keyword">else</span>
<span class="ruby-ivar">@build_context</span>.<span class="ruby-identifier">add</span>(
<span class="ruby-constant">Text</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">event</span>[<span class="ruby-value">1</span>], <span class="ruby-ivar">@build_context</span>.<span class="ruby-identifier">whitespace</span>, <span class="ruby-keyword">nil</span>, <span class="ruby-keyword">true</span>)
) <span class="ruby-keyword">unless</span> (
<span class="ruby-ivar">@build_context</span>.<span class="ruby-identifier">ignore_whitespace_nodes</span> <span class="ruby-keyword">and</span>
<span class="ruby-identifier">event</span>[<span class="ruby-value">1</span>].<span class="ruby-identifier">strip</span>.<span class="ruby-identifier">size</span><span class="ruby-operator">==</span><span class="ruby-value">0</span>
)
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">when</span> <span class="ruby-value">:comment</span>
<span class="ruby-identifier">c</span> = <span class="ruby-constant">Comment</span>.<span class="ruby-identifier">new</span>( <span class="ruby-identifier">event</span>[<span class="ruby-value">1</span>] )
<span class="ruby-ivar">@build_context</span>.<span class="ruby-identifier">add</span>( <span class="ruby-identifier">c</span> )
<span class="ruby-keyword">when</span> <span class="ruby-value">:cdata</span>
<span class="ruby-identifier">c</span> = <span class="ruby-constant">CData</span>.<span class="ruby-identifier">new</span>( <span class="ruby-identifier">event</span>[<span class="ruby-value">1</span>] )
<span class="ruby-ivar">@build_context</span>.<span class="ruby-identifier">add</span>( <span class="ruby-identifier">c</span> )
<span class="ruby-keyword">when</span> <span class="ruby-value">:processing_instruction</span>
<span class="ruby-ivar">@build_context</span>.<span class="ruby-identifier">add</span>( <span class="ruby-constant">Instruction</span>.<span class="ruby-identifier">new</span>( <span class="ruby-identifier">event</span>[<span class="ruby-value">1</span>], <span class="ruby-identifier">event</span>[<span class="ruby-value">2</span>] ) )
<span class="ruby-keyword">when</span> <span class="ruby-value">:end_doctype</span>
<span class="ruby-identifier">in_doctype</span> = <span class="ruby-keyword">false</span>
<span class="ruby-identifier">entities</span>.<span class="ruby-identifier">each</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">entities</span>[<span class="ruby-identifier">k</span>] = <span class="ruby-ivar">@build_context</span>.<span class="ruby-identifier">entities</span>[<span class="ruby-identifier">k</span>].<span class="ruby-identifier">value</span> }
<span class="ruby-ivar">@build_context</span> = <span class="ruby-ivar">@build_context</span>.<span class="ruby-identifier">parent</span>
<span class="ruby-keyword">when</span> <span class="ruby-value">:start_doctype</span>
<span class="ruby-identifier">doctype</span> = <span class="ruby-constant">DocType</span>.<span class="ruby-identifier">new</span>( <span class="ruby-identifier">event</span>[<span class="ruby-value">1</span><span class="ruby-operator">..</span><span class="ruby-value">-1</span>], <span class="ruby-ivar">@build_context</span> )
<span class="ruby-ivar">@build_context</span> = <span class="ruby-identifier">doctype</span>
<span class="ruby-identifier">entities</span> = {}
<span class="ruby-identifier">in_doctype</span> = <span class="ruby-keyword">true</span>
<span class="ruby-keyword">when</span> <span class="ruby-value">:attlistdecl</span>
<span class="ruby-identifier">n</span> = <span class="ruby-constant">AttlistDecl</span>.<span class="ruby-identifier">new</span>( <span class="ruby-identifier">event</span>[<span class="ruby-value">1</span><span class="ruby-operator">..</span><span class="ruby-value">-1</span>] )
<span class="ruby-ivar">@build_context</span>.<span class="ruby-identifier">add</span>( <span class="ruby-identifier">n</span> )
<span class="ruby-keyword">when</span> <span class="ruby-value">:externalentity</span>
<span class="ruby-identifier">n</span> = <span class="ruby-constant">ExternalEntity</span>.<span class="ruby-identifier">new</span>( <span class="ruby-identifier">event</span>[<span class="ruby-value">1</span>] )
<span class="ruby-ivar">@build_context</span>.<span class="ruby-identifier">add</span>( <span class="ruby-identifier">n</span> )
<span class="ruby-keyword">when</span> <span class="ruby-value">:elementdecl</span>
<span class="ruby-identifier">n</span> = <span class="ruby-constant">ElementDecl</span>.<span class="ruby-identifier">new</span>( <span class="ruby-identifier">event</span>[<span class="ruby-value">1</span>] )
<span class="ruby-ivar">@build_context</span>.<span class="ruby-identifier">add</span>(<span class="ruby-identifier">n</span>)
<span class="ruby-keyword">when</span> <span class="ruby-value">:entitydecl</span>
<span class="ruby-identifier">entities</span>[ <span class="ruby-identifier">event</span>[<span class="ruby-value">1</span>] ] = <span class="ruby-identifier">event</span>[<span class="ruby-value">2</span>] <span class="ruby-keyword">unless</span> <span class="ruby-identifier">event</span>[<span class="ruby-value">2</span>] <span class="ruby-operator">=~</span> <span class="ruby-regexp">/PUBLIC|SYSTEM/</span>
<span class="ruby-ivar">@build_context</span>.<span class="ruby-identifier">add</span>(<span class="ruby-constant">Entity</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">event</span>))
<span class="ruby-keyword">when</span> <span class="ruby-value">:notationdecl</span>
<span class="ruby-identifier">n</span> = <span class="ruby-constant">NotationDecl</span>.<span class="ruby-identifier">new</span>( <span class="ruby-operator">*</span><span class="ruby-identifier">event</span>[<span class="ruby-value">1</span><span class="ruby-operator">..</span><span class="ruby-value">-1</span>] )
<span class="ruby-ivar">@build_context</span>.<span class="ruby-identifier">add</span>( <span class="ruby-identifier">n</span> )
<span class="ruby-keyword">when</span> <span class="ruby-value">:xmldecl</span>
<span class="ruby-identifier">x</span> = <span class="ruby-constant">XMLDecl</span>.<span class="ruby-identifier">new</span>( <span class="ruby-identifier">event</span>[<span class="ruby-value">1</span>], <span class="ruby-identifier">event</span>[<span class="ruby-value">2</span>], <span class="ruby-identifier">event</span>[<span class="ruby-value">3</span>] )
<span class="ruby-ivar">@build_context</span>.<span class="ruby-identifier">add</span>( <span class="ruby-identifier">x</span> )
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">rescue</span> <span class="ruby-constant">REXML</span><span class="ruby-operator">::</span><span class="ruby-constant">Validation</span><span class="ruby-operator">::</span><span class="ruby-constant">ValidationException</span>
<span class="ruby-identifier">raise</span>
<span class="ruby-keyword">rescue</span> <span class="ruby-constant">REXML</span><span class="ruby-operator">::</span><span class="ruby-constant">ParseException</span>
<span class="ruby-identifier">raise</span>
<span class="ruby-keyword">rescue</span>
<span class="ruby-identifier">raise</span> <span class="ruby-constant">ParseException</span>.<span class="ruby-identifier">new</span>( <span class="ruby-identifier">$!</span>.<span class="ruby-identifier">message</span>, <span class="ruby-ivar">@parser</span>.<span class="ruby-identifier">source</span>, <span class="ruby-ivar">@parser</span>, <span class="ruby-identifier">$!</span> )
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
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