Class: RubyParser

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby_parser_extras.rb

Overview

RubyParser is a compound parser that first attempts to parse using the 1.9 syntax parser and falls back to the 1.8 syntax parser on a parse error.

Defined Under Namespace

Classes: SyntaxError

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ RubyParser

Returns a new instance of RubyParser.



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# File 'lib/ruby_parser_extras.rb', line 1346

def initialize
  @p18 = Ruby18Parser.new
  @p19 = Ruby19Parser.new
  @p20 = Ruby20Parser.new
  @p21 = Ruby21Parser.new
end

Class Method Details

.for_current_ruby ⇒ Object 



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# File 'lib/ruby_parser_extras.rb', line 1374

def self.for_current_ruby
  case RUBY_VERSION
  when /^1\.8/ then
    Ruby18Parser.new
  when /^1\.9/ then
    Ruby19Parser.new
  when /^2.0/ then
    Ruby20Parser.new
  when /^2.1/ then
    Ruby21Parser.new
  else
    raise "unrecognized RUBY_VERSION #{RUBY_VERSION}"
  end
end

Instance Method Details

#process(s, f = "(string)", t = 10) ⇒ Object Also known as: parse 



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# File 'lib/ruby_parser_extras.rb', line 1353

def process s, f = "(string)", t = 10
  e = nil
  [@p21, @p20, @p19, @p18].each do |parser|
    begin
      return parser.process s, f, t
    rescue Racc::ParseError, RubyParser::SyntaxError => exc
      e = exc
    end
  end
  raise e
end

#reset ⇒ Object 



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# File 'lib/ruby_parser_extras.rb', line 1367

def reset
  @p18.reset
  @p19.reset
  @p20.reset
  @p21.reset
end