Class: RBF::Interpreter::Storage

Inherits:
Hash
  • Object
show all
Defined in:
lib/rbf/interpreter/storage.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data) ⇒ Storage

Returns a new instance of Storage.



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# File 'lib/rbf/interpreter/storage.rb', line 18

def initialize (data)
  if data.is_a?(Array)
    parent = {}

    data.each_with_index {|value, index|
      parent[index] = value
    }

    super(parent)
  else
    super
  end

  @position = 0
end

Instance Attribute Details

#position ⇒ Object

Returns the value of attribute position.



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# File 'lib/rbf/interpreter/storage.rb', line 16

def position
  @position
end

Instance Method Details

#backward! ⇒ Object 



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# File 'lib/rbf/interpreter/storage.rb', line 44

def backward!
  @position -= 1
end

#check! ⇒ Object 



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# File 'lib/rbf/interpreter/storage.rb', line 34

def check!
  unless self[@position].is_a?(Integer)
    self[@position] = 0
  end
end

#clear! ⇒ Object 



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# File 'lib/rbf/interpreter/storage.rb', line 68

def clear!
  self.clear
end

#decrease! ⇒ Object 



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# File 'lib/rbf/interpreter/storage.rb', line 54

def decrease!
  check!

  self[@position] -= 1
end

#forward! ⇒ Object 



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# File 'lib/rbf/interpreter/storage.rb', line 40

def forward!
  @position += 1
end

#get(position = nil) ⇒ Object 



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# File 'lib/rbf/interpreter/storage.rb', line 64

def get (position=nil)
  self[position ? position.to_i : @position.to_i].to_i rescue 0
end

#increase! ⇒ Object 



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# File 'lib/rbf/interpreter/storage.rb', line 48

def increase!
  check!

  self[@position] += 1
end

#inspect ⇒ Object 



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# File 'lib/rbf/interpreter/storage.rb', line 77

def inspect
  "#<Storage(#{position}): #{super}>"
end

#reset! ⇒ Object 



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# File 'lib/rbf/interpreter/storage.rb', line 72

def reset!
  clear!
  @position = 0
end

#set(value, position = nil) ⇒ Object 



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# File 'lib/rbf/interpreter/storage.rb', line 60

def set (value, position=nil)
  self[position ? position.to_i : @position.to_i] = value.ord
end