Class: KPeg::LiteralString

Inherits:
Operator show all
Defined in:
lib/kpeg/grammar.rb

Instance Attribute Summary collapse

Attributes inherited from Operator

#action

Instance Method Summary collapse

Methods inherited from Operator

#detect_tags, #inspect_type, #prune_values, #set_action, #|

Constructor Details

#initialize(str) ⇒ LiteralString 



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# File 'lib/kpeg/grammar.rb', line 73

def initialize(str)
  super()
  @string = str
  @reg = Regexp.new Regexp.quote(str)
end

Instance Attribute Details

#string ⇒ Object (readonly)

Returns the value of attribute string.



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# File 'lib/kpeg/grammar.rb', line 79

def string
  @string
end

Instance Method Details

#==(obj) ⇒ Object 



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# File 'lib/kpeg/grammar.rb', line 89

def ==(obj)
  case obj
  when LiteralString
    @string == obj.string
  else
    super
  end
end

#inspect ⇒ Object 



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# File 'lib/kpeg/grammar.rb', line 98

def inspect
  inspect_type 'str', @string.inspect
end

#match(x) ⇒ Object 



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# File 'lib/kpeg/grammar.rb', line 81

def match(x)
  if str = x.scan(@reg)
    MatchString.new(self, str)
  else
    x.fail(self)
  end
end