Class: AntiSamy::Stack

Inherits:
Object
  • Object
show all
Defined in:
lib/antisamy/html/sax_filter.rb

Overview

Quick and Dirty Stack class

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Stack

Returns a new instance of Stack.



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# File 'lib/antisamy/html/sax_filter.rb', line 4

def initialize
  @stack = []
end

Instance Method Details

#empty? ⇒ Boolean

is the stack empty

Returns:

  • (Boolean) 


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# File 'lib/antisamy/html/sax_filter.rb', line 20

def empty?
  @stack.empty?
end

#peek ⇒ Object 



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# File 'lib/antisamy/html/sax_filter.rb', line 29

def peek
  @stack.last
end

#peek?(v) ⇒ Boolean

peek to see what next element is

Returns:

  • (Boolean) 


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# File 'lib/antisamy/html/sax_filter.rb', line 24

def peek?(v)
  return false if @stack.empty?
  return @stack.last.eql?(v)
end

#pop ⇒ Object

pop an element off the stack



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# File 'lib/antisamy/html/sax_filter.rb', line 12

def pop
  @stack.pop
end

#push(v) ⇒ Object

push an emement ont he stack



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# File 'lib/antisamy/html/sax_filter.rb', line 8

def push(v)
  @stack.push v
end

#size ⇒ Object

size of stack



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# File 'lib/antisamy/html/sax_filter.rb', line 16

def size
  @stack.size
end