Class: Miasma::Utils::Smash

Inherits:

Hash

• Object
• Hash
• Miasma::Utils::Smash

show all

Includes:

Hashie::Extensions::Coercion, Hashie::Extensions::DeepMerge, Hashie::Extensions::IndifferentAccess, Hashie::Extensions::MergeInitializer

Defined in:

lib/miasma/utils/smash.rb

Overview

Instance Method Summary (collapse)

• - (String) checksum

  Calculate checksum of hash (sha256).

• - (Object) fetch(*args)

  Fetch value at given path or return a default value.

• - (Smash) initialize(*args) constructor

  Create new instance.

• - (Object) merge!(hash)
• - (Object, NilClass) retrieve(*args) (also: #get)

  Get value at given path.

• - (Object) set(*args)

  Set value at given path.

• - (Hash) to_hash(*args)

  Convert to Hash.

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# File 'lib/miasma/utils/smash.rb', line 20

def initialize(*args)
  base = nil
  if(args.first.is_a?(::Hash))
    base = args.shift
  end
  super *args
  if(base)
    self.replace(base.to_smash)
  end
end

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# File 'lib/miasma/utils/smash.rb', line 90

def checksum
  Digest::SHA256.hexdigest(self.to_smash(:sorted).to_s)
end

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# File 'lib/miasma/utils/smash.rb', line 55

def fetch(*args)
  default_value = args.pop
  retrieve(*args) || default_value
end

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# File 'lib/miasma/utils/smash.rb', line 31

def merge!(hash)
  hash = hash.to_smash
  super(hash)
end

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# File 'lib/miasma/utils/smash.rb', line 40

def retrieve(*args)
  args.inject(self) do |memo, key|
    if(memo.is_a?(Hash))
      memo.to_smash[key]
    else
      nil
    end
  end
end

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# File 'lib/miasma/utils/smash.rb', line 64

def set(*args)
  unless(args.size > 1)
    raise ArgumentError.new 'Set requires at least one key and a value'
  end
  value = args.pop
  set_key = args.pop
  leaf = args.inject(self) do |memo, key|
    unless(memo[key].is_a?(Hash))
      memo[key] = Smash.new
    end
    memo[key]
  end
  leaf[set_key] = value
  value
end

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# File 'lib/miasma/utils/smash.rb', line 83

def to_hash(*args)
  self.to_type_converter(::Hash, :to_hash, *args)
end