Class: Parser::VariablesStack

Inherits:
Object
  • Object
show all
Defined in:
lib/parser/variables_stack.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ VariablesStack

Returns a new instance of VariablesStack.



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# File 'lib/parser/variables_stack.rb', line 6

def initialize
  @stack = []
  push
end

Instance Method Details

#declare(name) ⇒ Object 



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# File 'lib/parser/variables_stack.rb', line 27

def declare(name)
  @stack.last << name.to_sym
end

#declared?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/parser/variables_stack.rb', line 31

def declared?(name)
  @stack.last.include?(name.to_sym)
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/parser/variables_stack.rb', line 11

def empty?
  @stack.empty?
end

#pop ⇒ Object 



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# File 'lib/parser/variables_stack.rb', line 19

def pop
  @stack.pop
end

#push ⇒ Object 



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# File 'lib/parser/variables_stack.rb', line 15

def push
  @stack << Set.new
end

#reset ⇒ Object 



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# File 'lib/parser/variables_stack.rb', line 23

def reset
  @stack.clear
end