Class: DeepStruct::HashWrapper

Inherits:
DeepWrapper show all
Defined in:
lib/deepstruct.rb

Instance Method Summary collapse

Methods inherited from DeepWrapper

#initialize, #inspect, #to_json, #unwrap

Constructor Details

This class inherits a constructor from DeepStruct::DeepWrapper

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object 



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# File 'lib/deepstruct.rb', line 65

def method_missing(method, *args, &block)
  return @value.send(method, *args, &block) if @value.respond_to?(method)
  method = method.to_s
  if method.chomp!('?')
    key = method.to_sym
    self.has_key?(key) && !!self[key]
  elsif method.chomp!('=')
    raise ArgumentError, "wrong number of arguments (#{arg_count} for 1)", caller(1) if args.length != 1
    self[method] = args[0]
  elsif args.length == 0 && self.has_key?(method)
    self[method]
  else
    raise NoMethodError, "undefined method `#{method}' for #{self}", caller(1)
  end
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/deepstruct.rb', line 57

def [](key)
  indifferently(key) { |key| DeepStruct.wrap(@value[key]) }
end

#[]=(key, value) ⇒ Object 



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

def []=(key, value)
  indifferently(key) { |key| @value[key] = value }
end

#has_key?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/deepstruct.rb', line 61

def has_key?(key)
  indifferently(key) { |key| @value.has_key?(key) }
end

#indifferently(key, &block) ⇒ Object Also known as: indiffrently

Given a symbol or a string this yields the variant of the key that exists in the wrapped hash if any. If none exists (or the key is not a symbol or string) the input value is passed through unscathed.



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# File 'lib/deepstruct.rb', line 45

def indifferently(key, &block)
  return yield(key) if @value.has_key?(key)
  return yield(key.to_s) if key.is_a?(Symbol) && @value.has_key?(key.to_s)
  return yield(key.to_sym) if key.is_a?(String) && @value.has_key?(key.to_sym)
  return yield(key)
end

#respond_to?(name, include_private = false) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/deepstruct.rb', line 31

def respond_to?(name, include_private = false)
  super || @value.respond_to?(name, include_private) || case name.to_s
    when /\A(.*)\?\z/
      has_key?($1)
    when /\=\z/
      true
    else
      has_key?(name.to_s)
  end
end