Class: BetterHtml::Tokenizer::TokenArray

Inherits:
Object
  • Object
show all
Defined in:
lib/better_html/tokenizer/token_array.rb

Instance Method Summary collapse

Constructor Details

#initialize(list) ⇒ TokenArray

Returns a new instance of TokenArray.



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# File 'lib/better_html/tokenizer/token_array.rb', line 4

def initialize(list)
  @list = list
  @current = 0
  @last = @list.size
end

Instance Method Details

#any? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/better_html/tokenizer/token_array.rb', line 37

def any?
  !empty?
end

#current ⇒ Object 



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# File 'lib/better_html/tokenizer/token_array.rb', line 41

def current
  @list[@current] unless empty?
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/better_html/tokenizer/token_array.rb', line 33

def empty?
  size <= 0
end

#last ⇒ Object 



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# File 'lib/better_html/tokenizer/token_array.rb', line 45

def last
  @list[@last - 1] unless empty?
end

#pop ⇒ Object

Raises:

  • (RuntimeError) 


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# File 'lib/better_html/tokenizer/token_array.rb', line 17

def pop
  raise RuntimeError, 'no tokens left to pop' if empty?
  item = @list[@last - 1]
  @last -= 1
  item
end

#shift ⇒ Object

Raises:

  • (RuntimeError) 


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# File 'lib/better_html/tokenizer/token_array.rb', line 10

def shift
  raise RuntimeError, 'no tokens left to shift' if empty?
  item = @list[@current]
  @current += 1
  item
end

#size ⇒ Object 



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# File 'lib/better_html/tokenizer/token_array.rb', line 49

def size
  @last - @current
end

#trim(type) ⇒ Object 



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# File 'lib/better_html/tokenizer/token_array.rb', line 24

def trim(type)
  while current&.type == type
    shift
  end
  while last&.type == type
    pop
  end
end