Class: Lrama::Lexer::Token

Inherits:
Object
  • Object
show all
Defined in:
lib/lrama/lexer/token.rb,
lib/lrama/lexer/token/tag.rb,
lib/lrama/lexer/token/char.rb,
lib/lrama/lexer/token/ident.rb,
lib/lrama/lexer/token/user_code.rb,
lib/lrama/lexer/token/instantiate_rule.rb

Direct Known Subclasses

Char, Ident, InstantiateRule, Tag, UserCode

Defined Under Namespace

Classes: Char, Ident, InstantiateRule, Tag, UserCode

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(s_value:, alias_name: nil, location: nil) ⇒ Token

Returns a new instance of Token.



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# File 'lib/lrama/lexer/token.rb', line 19

def initialize(s_value:, alias_name: nil, location: nil)
  s_value.freeze
  @s_value = s_value
  @alias_name = alias_name
  @location = location
end

Instance Attribute Details

#alias_name ⇒ Object

: String



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# File 'lib/lrama/lexer/token.rb', line 15

def alias_name
  @alias_name
end

#location ⇒ Object (readonly)

: Location



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# File 'lib/lrama/lexer/token.rb', line 14

def location
  @location
end

#referred ⇒ Object

: bool



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# File 'lib/lrama/lexer/token.rb', line 16

def referred
  @referred
end

#s_value ⇒ Object (readonly)

: String



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# File 'lib/lrama/lexer/token.rb', line 13

def s_value
  @s_value
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/lrama/lexer/token.rb', line 37

def ==(other)
  self.class == other.class && self.s_value == other.s_value
end

#first_column ⇒ Object Also known as: column 



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# File 'lib/lrama/lexer/token.rb', line 48

def first_column
  location.first_column
end

#first_line ⇒ Object Also known as: line 



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# File 'lib/lrama/lexer/token.rb', line 42

def first_line
  location.first_line
end

#invalid_ref(ref, message) ⇒ Object 



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# File 'lib/lrama/lexer/token.rb', line 64

def invalid_ref(ref, message)
  location = self.location.partial_location(ref.first_column, ref.last_column)
  raise location.generate_error_message(message)
end

#last_column ⇒ Object 



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# File 'lib/lrama/lexer/token.rb', line 59

def last_column
  location.last_column
end

#last_line ⇒ Object 



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# File 'lib/lrama/lexer/token.rb', line 54

def last_line
  location.last_line
end

#referred_by?(string) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lrama/lexer/token.rb', line 32

def referred_by?(string)
  [self.s_value, self.alias_name].compact.include?(string)
end

#to_s ⇒ Object 



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# File 'lib/lrama/lexer/token.rb', line 27

def to_s
  "value: `#{s_value}`, location: #{location}"
end