Class: PurpleHash

Inherits:
Hash
  • Object
show all
Defined in:
lib/purple_hash.rb

Defined Under Namespace

Classes: HashFrozen

Instance Method Summary collapse

Constructor Details

#initialize(hash = {}) ⇒ PurpleHash

Returns a new instance of PurpleHash.



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# File 'lib/purple_hash.rb', line 8

def initialize(hash={})
  configure_from_hash(hash)
  @__frozen = false
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/purple_hash.rb', line 34

def [](key)
  super(key.to_sym)
end

#[]=(key, value) ⇒ Object

Raises:



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# File 'lib/purple_hash.rb', line 38

def []=(key, value)
  raise HashFrozen if frozen?

  if value.is_a?(Hash) && !value.is_a?(self.class)
    self[key].configure_from_hash(value)
  else
    super(key.to_sym, value)
  end
end

#configure_from_hash(hash) ⇒ Object 



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# File 'lib/purple_hash.rb', line 24

def configure_from_hash(hash)
  hash.each do |key, value|
    if value.is_a?(Hash)
      self[key].configure_from_hash(value)
    else
      self[key] = value
    end
  end
end

#default(key) ⇒ Object 



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# File 'lib/purple_hash.rb', line 48

def default(key)
  return nil if frozen?
  self[key] = PurpleHash.new
end

#default=(*args) ⇒ Object

Raises:

  • (RuntimeError) 


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# File 'lib/purple_hash.rb', line 53

def default=(*args)
  raise RuntimeError, "#{self.class} does not allow changing the default hash value"
end

#freeze! ⇒ Object 



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# File 'lib/purple_hash.rb', line 13

def freeze!
  self.each do |k, h|
    h.freeze! if h.respond_to?(:freeze!)
  end
  @__frozen = true
end

#frozen? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/purple_hash.rb', line 20

def frozen?
  @__frozen === true
end