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[DIR] ..
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[DIR] bundler
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[DIR] cgi
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[DIR] csv
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[DIR] digest
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[DIR] drb
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[DIR] e2mmap
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[DIR] fiddle
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[DIR] fileutils
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[DIR] forwardable
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[DIR] io
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[DIR] irb
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[DIR] json
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[DIR] matrix
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[DIR] net
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[DIR] openssl
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[DIR] optparse
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[DIR] psych
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[DIR] racc
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[DIR] rdoc
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[DIR] rexml
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[DIR] rinda
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[DIR] ripper
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[DIR] rss
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[DIR] rubygems
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[DIR] shell
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[DIR] syslog
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[DIR] thwait
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[DIR] tracer
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[DIR] unicode_normalize
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[DIR] uri
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[DIR] webrick
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[DIR] x86_64-linux
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[DIR] yaml
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English.rb
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abbrev.rb
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base64.rb
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benchmark.rb
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bigdecimal.rb
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bundler.rb
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cgi.rb
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cmath.rb
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coverage.rb
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csv.rb
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date.rb
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debug.rb
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delegate.rb
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digest.rb
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drb.rb
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e2mmap.rb
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erb.rb
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expect.rb
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fiddle.rb
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fileutils.rb
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find.rb
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forwardable.rb
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getoptlong.rb
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ipaddr.rb
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irb.rb
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json.rb
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kconv.rb
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logger.rb
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matrix.rb
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mkmf.rb
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monitor.rb
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mutex_m.rb
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observer.rb
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open-uri.rb
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open3.rb
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openssl.rb
469 bytes
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optionparser.rb
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optparse.rb
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ostruct.rb
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pathname.rb
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pp.rb
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prettyprint.rb
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prime.rb
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profile.rb
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profiler.rb
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pstore.rb
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psych.rb
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rdoc.rb
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resolv-replace.rb
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resolv.rb
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ripper.rb
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rss.rb
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rubygems.rb
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scanf.rb
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securerandom.rb
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set.rb
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shell.rb
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shellwords.rb
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singleton.rb
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socket.rb
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sync.rb
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tempfile.rb
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thwait.rb
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time.rb
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timeout.rb
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tmpdir.rb
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tracer.rb
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tsort.rb
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un.rb
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uri.rb
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weakref.rb
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webrick.rb
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yaml.rb
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# frozen_string_literal: true require 'ripper/core' require 'ripper/lexer' require 'ripper/filter' require 'ripper/sexp' # Ripper is a Ruby script parser. # # You can get information from the parser with event-based style. # Information such as abstract syntax trees or simple lexical analysis of the # Ruby program. # # == Usage # # Ripper provides an easy interface for parsing your program into a symbolic # expression tree (or S-expression). # # Understanding the output of the parser may come as a challenge, it's # recommended you use PP to format the output for legibility. # # require 'ripper' # require 'pp' # # pp Ripper.sexp('def hello(world) "Hello, #{world}!"; end') # #=> [:program, # [[:def, # [:@ident, "hello", [1, 4]], # [:paren, # [:params, [[:@ident, "world", [1, 10]]], nil, nil, nil, nil, nil, nil]], # [:bodystmt, # [[:string_literal, # [:string_content, # [:@tstring_content, "Hello, ", [1, 18]], # [:string_embexpr, [[:var_ref, [:@ident, "world", [1, 27]]]]], # [:@tstring_content, "!", [1, 33]]]]], # nil, # nil, # nil]]]] # # You can see in the example above, the expression starts with +:program+. # # From here, a method definition at +:def+, followed by the method's identifier # <code>:@ident</code>. After the method's identifier comes the parentheses # +:paren+ and the method parameters under +:params+. # # Next is the method body, starting at +:bodystmt+ (+stmt+ meaning statement), # which contains the full definition of the method. # # In our case, we're simply returning a String, so next we have the # +:string_literal+ expression. # # Within our +:string_literal+ you'll notice two <code>@tstring_content</code>, # this is the literal part for <code>Hello, </code> and <code>!</code>. Between # the two <code>@tstring_content</code> statements is a +:string_embexpr+, # where _embexpr_ is an embedded expression. Our expression consists of a local # variable, or +var_ref+, with the identifier (<code>@ident</code>) of +world+. # # == Resources # # * {Ruby Inside}[http://www.rubyinside.com/using-ripper-to-see-how-ruby-is-parsing-your-code-5270.html] # # == Requirements # # * ruby 1.9 (support CVS HEAD only) # * bison 1.28 or later (Other yaccs do not work) # # == License # # Ruby License. # # - Minero Aoki # - aamine@loveruby.net # - http://i.loveruby.net class Ripper; end
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