Class: Keisan::StringAndGroupParser::StringPortion

Inherits:
Portion
  • Object
show all
Defined in:
lib/keisan/string_and_group_parser.rb

Instance Attribute Summary collapse

Attributes inherited from Portion

#end_index, #start_index

Instance Method Summary collapse

Constructor Details

#initialize(expression, start_index) ⇒ StringPortion

Returns a new instance of StringPortion.

Raises:



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# File 'lib/keisan/string_and_group_parser.rb', line 14

def initialize(expression, start_index)
  super(start_index)

  @string = expression[start_index]
  @escaped_string = expression[start_index]
  @end_index = start_index + 1

  while @end_index < expression.size
    if expression[@end_index] == quote_type
      @string << quote_type
      @escaped_string << quote_type
      @end_index += 1
      # Successfully parsed the string
      return
    end

    n, c = get_potentially_escaped_next_character(expression, @end_index)
    @escaped_string << c
    @end_index += n
  end

  raise Keisan::Exceptions::TokenizingError.new("Tokenizing error, no closing quote #{quote_type}")
end

Instance Attribute Details

#escaped_string ⇒ Object (readonly)

Returns the value of attribute escaped_string.



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# File 'lib/keisan/string_and_group_parser.rb', line 12

def escaped_string
  @escaped_string
end

#string ⇒ Object (readonly)

Returns the value of attribute string.



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# File 'lib/keisan/string_and_group_parser.rb', line 12

def string
  @string
end

Instance Method Details

#size ⇒ Object 



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# File 'lib/keisan/string_and_group_parser.rb', line 38

def size
  string.size
end

#to_s ⇒ Object 



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# File 'lib/keisan/string_and_group_parser.rb', line 42

def to_s
  string
end