Class: Yaparc::ManyOne

Inherits:
Object
  • Object
show all
Includes:
Parsable
Defined in:
lib/yaparc/many_one.rb

Overview

requires at least one successfull application of parser.

Constant Summary

Constants included from Parsable

Parsable::IS_ALPHANUM, Parsable::IS_CR, Parsable::IS_DIGIT, Parsable::IS_LOWER, Parsable::IS_SPACE, Parsable::IS_WHITESPACE

Instance Method Summary collapse

Methods included from Parsable

#parse

Constructor Details

#initialize(parser, identity = []) ⇒ ManyOne

Returns a new instance of ManyOne.



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# File 'lib/yaparc/many_one.rb', line 8

def initialize(parser, identity = [])
  @parser = lambda do |_input|
    Seq.new(parser, Many.new(parser, identity)) do |head, tail|
      case head
      when ::String, ::Array, ::Integer
        head + tail
      when ::Hash
        head.merge(tail)
      else
        if tail.nil?
          head
        else
          [head] + tail
        end
      end
    end
  end
end