Class: Simple::Immutable

Inherits:
Object
  • Object
show all
Defined in:
lib/simple/immutable.rb

Constant Summary collapse

SELF = 
self

Class Method Summary collapse

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(sym, *args, &block) ⇒ Object (private) 



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# File 'lib/simple/immutable.rb', line 39

def method_missing(sym, *args, &block)
  if args.empty? && !block
    begin
      value = @hsh.fetch(sym.to_sym) { @hsh.fetch(sym.to_s) }
      return SELF.create(value)
    rescue KeyError
      # STDERR.puts "Missing attribute #{sym} for Immutable w/#{@hsh.inspect}"
      nil
    end
  end

  super
end

Class Method Details

.create(object, max_depth = 8) ⇒ Object

turns an object, which can be a hash or array of hashes, arrays, and scalars into an object which you can use to access with dot methods.



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# File 'lib/simple/immutable.rb', line 9

def self.create(object, max_depth = 8)
  case object
  when Array
    raise ArgumentError, "Object nested too deep (or inner loop?)" if max_depth < 0

    object.map { |obj| create obj, max_depth - 1 }
  when Hash
    new(object)
  else
    object
  end
end

.raw_data(immutable) ⇒ Object 



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# File 'lib/simple/immutable.rb', line 22

def self.raw_data(immutable)
  case immutable
  when SELF
    immutable.instance_variable_get :@hsh
  when Array
    immutable.map { |e| raw_data(e) }
  else
    immutable
  end
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/simple/immutable.rb', line 69

def ==(other)
  @hsh == other
end

#inspect ⇒ Object 



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# File 'lib/simple/immutable.rb', line 55

def inspect
  "<#{self.class.name}: #{@hsh.inspect}>"
end

#respond_to?(sym) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/simple/immutable.rb', line 65

def respond_to?(sym)
  super || @hsh.key?(sym.to_s) || @hsh.key?(sym.to_sym)
end

#respond_to_missing?(method_name, include_private = false) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/simple/immutable.rb', line 59

def respond_to_missing?(method_name, include_private = false)
  @hsh.key?(method_name.to_sym) ||
    @hsh.key?(method_name.to_s) ||
    super
end