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?? class_loader.rb(1.88 KB)
?? coder.rb(2.02 KB)
?? core_ext.rb(751 B)
?? deprecated.rb(2.49 KB)
?? exception.rb(234 B)
?? handler.rb(7.02 KB)
?? handlers
?? json
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?? nodes.rb(2.33 KB)
?? omap.rb(45 B)
?? parser.rb(1.64 KB)
?? scalar_scanner.rb(4.24 KB)
?? set.rb(44 B)
?? stream.rb(893 B)
?? streaming.rb(637 B)
?? syntax_error.rb(555 B)
?? tree_builder.rb(2.05 KB)
?? visitors
?? visitors.rb(206 B)
?? y.rb(160 B)

Editing: parser.rb

module Psych
  ###
  # YAML event parser class.  This class parses a YAML document and calls
  # events on the handler that is passed to the constructor.  The events can
  # be used for things such as constructing a YAML AST or deserializing YAML
  # documents.  It can even be fed back to Psych::Emitter to emit the same
  # document that was parsed.
  #
  # See Psych::Handler for documentation on the events that Psych::Parser emits.
  #
  # Here is an example that prints out ever scalar found in a YAML document:
  #
  #   # Handler for detecting scalar values
  #   class ScalarHandler < Psych::Handler
  #     def scalar value, anchor, tag, plain, quoted, style
  #       puts value
  #     end
  #   end
  #
  #   parser = Psych::Parser.new(ScalarHandler.new)
  #   parser.parse(yaml_document)
  #
  # Here is an example that feeds the parser back in to Psych::Emitter.  The
  # YAML document is read from STDIN and written back out to STDERR:
  #
  #   parser = Psych::Parser.new(Psych::Emitter.new($stderr))
  #   parser.parse($stdin)
  #
  # Psych uses Psych::Parser in combination with Psych::TreeBuilder to
  # construct an AST of the parsed YAML document.

class Parser
    class Mark < Struct.new(:index, :line, :column)
    end

# The handler on which events will be called
    attr_accessor :handler

# Set the encoding for this parser to +encoding+
    attr_writer :external_encoding

###
    # Creates a new Psych::Parser instance with +handler+.  YAML events will
    # be called on +handler+.  See Psych::Parser for more details.

def initialize handler = Handler.new
      @handler = handler
      @external_encoding = ANY
    end
  end
end

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Editing: parser.rb

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