Class: MotionMap::Map

Inherits:
Hash
  • Object
show all
Defined in:
lib/motion-map/map.rb

Constant Summary collapse

Dup = 
instance_method(:dup)

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args, &block) ⇒ Map

Returns a new instance of Map.



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# File 'lib/motion-map/map.rb', line 101

def initialize(*args, &block)
  case args.size
    when 0
      super(&block)
    when 1
      first = args.first
      case first
        when nil, false
          nil
        when Hash             
          initialize_from_hash(first)
        when Array      
          initialize_from_array(first)
        else
          if first.respond_to?(:to_hash)
            initialize_from_hash(first.to_hash)
          else
            initialize_from_hash(first)
          end
      end        
    else
      initialize_from_array(args)
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(*args, &block) ⇒ Object

a sane method missing that only supports writing values or reading *previously set* values



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# File 'lib/motion-map/map.rb', line 487

def method_missing(*args, &block)
  method = args.first.to_s
  case method
    when /=$/
      key = args.shift.to_s.chomp('=')
      value = args.shift
      self[key] = value
    when /\?$/
      key = args.shift.to_s.chomp('?')
      self.has?( key )
    else
      key = method
      unless has_key?(key)
        return(block ? fetch(key, &block) : super(*args))
      end
      self[key]
  end
end

Class Method Details

._explode(key, value, accum = {:branches => [], :leaves => []}) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 740

def self._explode(key, value, accum = {:branches => [], :leaves => []})
  key = Array(key).flatten

  case value
    when Array
      accum[:branches].push([key, Array])

      value.each_with_index do |v, k|
        MotionMap::Map._explode(key + [k], v, accum)
      end

    when Hash
      accum[:branches].push([key, MotionMap::Map])
      value.each do |k, v|
        MotionMap::Map._explode(key + [k], v, accum)
      end

    else
      accum[:leaves].push([key, value])
  end

  accum
end

.add(*args) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 764

def self.add(*args)
  args.flatten!
  args.compact!

  MotionMap::Map.for(args.shift).tap do |map|
    args.each{|arg| map.add(arg)}
  end
end

.allocate ⇒ Object 



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# File 'lib/motion-map/map.rb', line 4

def allocate
  super.instance_eval do
    @keys = []
    self
  end
end

.alphanumeric_key_for(key) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 869

def self.alphanumeric_key_for(key)
  return key if key.is_a?(Numeric)

  digity, stringy, digits = %r/^(~)?(\d+)$/iomx.match(key).to_a

  digity ? stringy ? String(digits) : Integer(digits) : key
end

.blank?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/motion-map/map.rb', line 577

def self.blank?(value)
  return value.blank? if value.respond_to?(:blank?)

  case value
    when String
      value.strip.empty?
    when Numeric
      value == 0
    when false
      true
    else
      value.respond_to?(:empty?) ? value.empty? : !value
  end
end

.breadth_first_each(enumerable, accum = [], &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 942

def self.breadth_first_each(enumerable, accum = [], &block)
  levels = []

  keys = MotionMap::Map.depth_first_keys(enumerable)

  keys.each do |key|
    key.size.times do |i|
      k = key.slice(0, i + 1)
      level = k.size - 1
      levels[level] ||= Array.new
      last = levels[level].last
      levels[level].push(k) unless last == k
    end
  end

  levels.each do |level|
    level.each do |key|
      val = enumerable.get(key)
      block ? block.call(key, val) : accum.push([key, val])
    end
  end

  block ? enumerable : accum
end

.coerce(other) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 26

def coerce(other)
  case other
    when MotionMap::Map
      other
    else
      allocate.update(other.to_hash)
  end
end

.collection_has?(collection, key, &block) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/motion-map/map.rb', line 619

def self.collection_has?(collection, key, &block)
  has_key =
    case collection
      when Array
        key = (Integer(key) rescue -1)
        (0...collection.size).include?(key)

      when Hash
        collection.has_key?(key)

      else
        raise(IndexError, "(#{ collection.inspect })[#{ key.inspect }]")
    end

  block.call(key) if(has_key and block)

  has_key
end

.collection_key(collection, key, &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 597

def self.collection_key(collection, key, &block)
  case collection
    when Array
      begin
        key = Integer(key)
      rescue
        raise(IndexError, "(#{ collection.inspect })[#{ key.inspect }]")
      end
      collection[key]

    when Hash
      collection[key]

    else
      raise(IndexError, "(#{ collection.inspect })[#{ key.inspect }]")
  end
end

.collection_set(collection, key, value, &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 642

def self.collection_set(collection, key, value, &block)
  set_key = false

  case collection
    when Array
      begin
        key = Integer(key)
      rescue
        raise(IndexError, "(#{ collection.inspect })[#{ key.inspect }]=#{ value.inspect }")
      end
      set_key = true
      collection[key] = value

    when Hash
      set_key = true
      collection[key] = value

    else
      raise(IndexError, "(#{ collection.inspect })[#{ key.inspect }]=#{ value.inspect }")
  end

  block.call(key) if(set_key and block)

  [key, value]
end

.combine(*args) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 773

def self.combine(*args)
  MotionMap::Map.add(*args)
end

.convert_key(key) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 150

def self.convert_key(key)
  key = key.kind_of?(Symbol) ? key.to_s : key
end

.convert_value(value) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 162

def self.convert_value(value)
  case value
    when Hash
      coerce(value)
    when Array
      value = value.map{|v| convert_value(v)}
    else
      value
  end
end

.depth_first_each(enumerable, path = [], accum = [], &block) ⇒ Object

TODO - technically this returns only leaves so the name isn’t quite right. re-factor for 3.0



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# File 'lib/motion-map/map.rb', line 891

def self.depth_first_each(enumerable, path = [], accum = [], &block)
  self.pairs_for(enumerable) do |key, val|
    path.push(key)
    if((val.is_a?(Hash) or val.is_a?(Array)) and not val.empty?)
      MotionMap::Map.depth_first_each(val, path, accum)
    else
      accum << [path.dup, val]
    end
    path.pop()
  end
  if block
    accum.each{|keys, val| block.call(keys, val)}
  else
    accum
  end
end

.depth_first_keys(enumerable, path = [], accum = [], &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 908

def self.depth_first_keys(enumerable, path = [], accum = [], &block)
  accum = self.depth_first_each(enumerable, path = [], accum = [], &block)
  accum.map!{|kv| kv.first}
  accum
end

.depth_first_values(enumerable, path = [], accum = [], &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 914

def self.depth_first_values(enumerable, path = [], accum = [], &block)
  accum = self.depth_first_each(enumerable, path = [], accum = [], &block)
  accum.map!{|kv| kv.last}
  accum
end

.each_pair(*args, &block) ⇒ Object

iterate over arguments in pairs smartly.



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# File 'lib/motion-map/map.rb', line 37

def each_pair(*args, &block)
  size = args.size
  parity = size % 2 == 0 ? :even : :odd
  first = args.first

  if block.nil?
    result = []
    block = lambda{|*kv| result.push(kv)}
  else
    result = args
  end

  return args if size == 0

  if size == 1
    if first.respond_to?(:each_pair)
      first.each_pair do |key, val|
        block.call(key, val)
      end
      return args
    end

    if first.respond_to?(:each_slice)
      first.each_slice(2) do |key, val|
        block.call(key, val)
      end
      return args
    end
    raise(ArgumentError, 'odd number of arguments for Map')
  end

  array_of_pairs = args.all?{|a| a.is_a?(Array) and a.size == 2}

  if array_of_pairs
    args.each do |pair|
      key, val, *ignored = pair
      block.call(key, val)
    end
  else
    0.step(args.size - 1, 2) do |a|
      key = args[a]
      val = args[a + 1]
      block.call(key, val)
    end
  end

  args
end

.explode(hash) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 722

def self.explode(hash)
  accum = {:branches => [], :leaves => []}

  hash.each do |key, value|
    MotionMap::Map._explode(key, value, accum)
  end

  branches = accum[:branches]
  leaves = accum[:leaves]

  sort_by_key_size = proc{|a,b| a.first.size <=> b.first.size}

  branches.sort!(&sort_by_key_size)
  leaves.sort!(&sort_by_key_size)

  accum
end

.for(*args, &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 19

def for(*args, &block)
  if(args.size == 1 and block.nil?)
    return args.first if args.first.class == self
  end
  new(*args, &block)
end

.from_hash(hash, order = nil) ⇒ Object

support for building ordered hasshes from a Map’s own image



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# File 'lib/motion-map/map.rb', line 424

def self.from_hash(hash, order = nil)
  map = MotionMap::Map.for(hash)
  map.reorder!(order) if order
  map
end

.intersection(a, b) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 86

def intersection(a, b)
  a, b, i = MotionMap::Map.for(a), MotionMap::Map.for(b), MotionMap::Map.new
  a.depth_first_each{|key, val| i.set(key, val) if b.has?(key)}
  i
end

.key_for(*keys) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 881

def self.key_for(*keys)
  return keys.flatten
end

.keys_for(enumerable) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 967

def self.keys_for(enumerable)
  keys = enumerable.respond_to?(:keys) ? enumerable.keys : Array.new(enumerable.size){|i| i}
end

.map_for(hash) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 141

def self.map_for(hash)
  hash = klass.coerce(hash)
  hash.default = hash.default
  hash
end

.match(haystack, needle) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 92

def match(haystack, needle)
  intersection(haystack, needle) == needle
end

.new(*args, &block) ⇒ Object Also known as: [] 



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# File 'lib/motion-map/map.rb', line 11

def new(*args, &block)
  allocate.instance_eval do
    initialize(*args, &block)
    self
  end
end

.pairs_for(enumerable, *args, &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 920

def self.pairs_for(enumerable, *args, &block)
  if block.nil?
    pairs, block = [], lambda{|*pair| pairs.push(pair)}
  else
    pairs = false
  end

  result =
    case enumerable
      when Hash
        enumerable.each_pair(*args, &block)
      when Array
        enumerable.each_with_index(*args) do |val, key|
          block.call(key, val)
        end
      else
        enumerable.each_pair(*args, &block)
    end

  pairs ? pairs : result
end

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 398

def <=>(other)
  cmp = keys <=> klass.coerce(other).keys
  return cmp unless cmp.zero?
  values <=> klass.coerce(other).values
end

#==(other) ⇒ Object

equality / sorting / matching support



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# File 'lib/motion-map/map.rb', line 384

def ==(other)
  case other
    when MotionMap::Map
      return false if keys != other.keys
      super(other)

    when Hash
      self == MotionMap::Map.from_hash(other, self)

    else
      false
  end
end

#=~(hash) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 404

def =~(hash)
  to_hash == klass.coerce(hash).to_hash
end

#[](key) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 227

def [](key)
  key = convert_key(key)
  __get__(key)
end

#[]=(key, val) ⇒ Object Also known as: store 



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# File 'lib/motion-map/map.rb', line 220

def []=(key, val)
  key, val = convert(key, val)
  keys.push(key) unless has_key?(key)
  __set__(key, val)
end

#__get__ ⇒ Object 



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# File 'lib/motion-map/map.rb', line 217

alias_method '__get__', '[]'

#__set__ ⇒ Object

writer/reader methods



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# File 'lib/motion-map/map.rb', line 216

alias_method '__set__', '[]='

#__update__ ⇒ Object 



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# File 'lib/motion-map/map.rb', line 218

alias_method '__update__', 'update'

#add(*args) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 696

def add(*args)
  case
    when args.empty?
      return []
    when args.size == 1 && args.first.is_a?(Hash)
      hash = args.shift
    else
      hash = {}
      value = args.pop
      key = Array(args).flatten
      hash[key] = value
  end

  exploded = MotionMap::Map.explode(hash)

  exploded[:branches].each do |key, type|
    set(key, type.new) unless get(key).is_a?(type)
  end

  exploded[:leaves].each do |key, value|
    set(key, value)
  end

  self
end

#alphanumeric_key_for(key) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 877

def alphanumeric_key_for(key)
  MotionMap::Map.alphanumeric_key_for(key)
end

#apply(other) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 862

def apply(other)
  MotionMap::Map.for(other).depth_first_each do |keys, value|
    set(keys => value) unless !get(keys).nil?
  end
  self
end

#blank?(*keys) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/motion-map/map.rb', line 592

def blank?(*keys)
  return empty? if keys.empty?
  !has?(*keys) or MotionMap::Map.blank?(get(*keys))
end

#breadth_first_each(*args, &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 983

def breadth_first_each(*args, &block)
  MotionMap::Map.breadth_first_each(enumerable=self, *args, &block)
end

#clear ⇒ Object 



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# File 'lib/motion-map/map.rb', line 315

def clear
  keys.clear
  super
end

#clone ⇒ Object 



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# File 'lib/motion-map/map.rb', line 202

def clone
  copy
end

#collection_has?(*args, &block) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/motion-map/map.rb', line 638

def collection_has?(*args, &block)
  MotionMap::Map.collection_has?(*args, &block)
end

#collection_key(*args, &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 615

def collection_key(*args, &block)
  MotionMap::Map.collection_key(*args, &block)
end

#collection_set(*args, &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 668

def collection_set(*args, &block)
  MotionMap::Map.collection_set(*args, &block)
end

#combine(*args, &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 781

def combine(*args, &block)
  dup.tap do |map|
    map.combine!(*args, &block)
  end
end

#combine!(*args, &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 777

def combine!(*args, &block)
  add(*args, &block)
end

#convert(key, val) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 182

def convert(key, val)
  [convert_key(key), convert_value(val)]
end

#convert_key(key) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 154

def convert_key(key)
  if klass.respond_to?(:convert_key)
    klass.convert_key(key)
  else
    MotionMap::Map.convert_key(key)
  end
end

#convert_value(value) ⇒ Object Also known as: convert_val 



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# File 'lib/motion-map/map.rb', line 172

def convert_value(value)
  if klass.respond_to?(:convert_value)
    klass.convert_value(value)
  else
    MotionMap::Map.convert_value(value)
  end
end

#copy ⇒ Object 



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# File 'lib/motion-map/map.rb', line 186

def copy
  default = self.default
  self.default = nil
  copy = Marshal.load(Marshal.dump(self)) rescue Dup.bind(self).call()
  copy.default = default
  copy
ensure
  self.default = default
end

#default(key = nil) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 206

def default(key = nil)
  key.is_a?(Symbol) && include?(key = key.to_s) ? self[key] : super
end

#default=(value) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/motion-map/map.rb', line 210

def default=(value)
  raise ArgumentError.new("Map doesn't work so well with a non-nil default value!") unless value.nil?
end

#delete(key) ⇒ Object

mutators



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# File 'lib/motion-map/map.rb', line 309

def delete(key)
  key = convert_key(key)
  keys.delete(key)
  super(key)
end

#delete_if ⇒ Object 



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# File 'lib/motion-map/map.rb', line 320

def delete_if
  to_delete = []
  keys.each{|key| to_delete.push(key) if yield(key,self[key])}
  to_delete.each{|key| delete(key)}
  self
end

#depth_first_each(*args, &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 971

def depth_first_each(*args, &block)
  MotionMap::Map.depth_first_each(enumerable=self, *args, &block)
end

#depth_first_keys(*args, &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 975

def depth_first_keys(*args, &block)
  MotionMap::Map.depth_first_keys(enumerable=self, *args, &block)
end

#depth_first_values(*args, &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 979

def depth_first_values(*args, &block)
  MotionMap::Map.depth_first_values(enumerable=self, *args, &block)
end

#dup ⇒ Object 



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# File 'lib/motion-map/map.rb', line 198

def dup
  copy
end

#each ⇒ Object Also known as: each_pair 



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# File 'lib/motion-map/map.rb', line 301

def each
  keys.each{|key| yield(key, self[key])}
  self
end

#each_key ⇒ Object 



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# File 'lib/motion-map/map.rb', line 291

def each_key
  keys.each{|key| yield(key)}
  self
end

#each_value ⇒ Object 



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# File 'lib/motion-map/map.rb', line 296

def each_value
  keys.each{|key| yield self[key]}
  self
end

#each_with_index ⇒ Object

iterator methods



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# File 'lib/motion-map/map.rb', line 286

def each_with_index
  keys.each_with_index{|key, index| yield([key, self[key]], index)}
  self
end

#fetch(key, *args, &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 232

def fetch(key, *args, &block)
  key = convert_key(key)
  super(key, *args, &block)
end

#first ⇒ Object 



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# File 'lib/motion-map/map.rb', line 276

def first
  [keys.first, self[keys.first]]
end

#forcing(forcing = nil, &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 841

def forcing(forcing=nil, &block)
  @forcing ||= nil

  if block
    begin
      previous = @forcing
      @forcing = forcing
      block.call()
    ensure
      @forcing = previous
    end
  else
    @forcing
  end
end

#forcing?(forcing = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/motion-map/map.rb', line 857

def forcing?(forcing=nil)
  @forcing ||= nil
  @forcing == forcing
end

#get(*keys) ⇒ Object

support for compound key indexing and depth first iteration



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# File 'lib/motion-map/map.rb', line 520

def get(*keys)
  keys = key_for(keys)

  if keys.size <= 1
    if !self.has_key?(keys.first) && block_given?
      return yield
    else
      return self[keys.first]
    end
  end

  keys, key = keys[0..-2], keys[-1]
  collection = self

  keys.each do |k|
    if MotionMap::Map.collection_has?(collection, k)
      collection = MotionMap::Map.collection_key(collection, k)
    else
      collection = nil
    end

    unless collection.respond_to?('[]')
      leaf = collection
      return leaf
    end
  end

  if !MotionMap::Map.collection_has?(collection, key) && block_given?
    default_value = yield
  else
    MotionMap::Map.collection_key(collection, key)
  end
end

#has?(*keys) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/motion-map/map.rb', line 554

def has?(*keys)
  keys = key_for(keys)
  collection = self

  return MotionMap::Map.collection_has?(collection, keys.first) if keys.size <= 1

  keys, key = keys[0..-2], keys[-1]

  keys.each do |k|
    if MotionMap::Map.collection_has?(collection, k)
      collection = MotionMap::Map.collection_key(collection, k)
    else
      collection = nil
    end

    return collection unless collection.respond_to?('[]')
  end

  return false unless(collection.is_a?(Hash) or collection.is_a?(Array))

  MotionMap::Map.collection_has?(collection, key)
end

#id ⇒ Object

Raises:

  • (NoMethodError) 


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# File 'lib/motion-map/map.rb', line 512

def id
  return self[:id] if has_key?(:id)
  return self[:_id] if has_key?(:_id)
  raise NoMethodError
end

#initialize_from_array(array) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 132

def initialize_from_array(array)
  map = self    
  MotionMap::Map.each_pair(array){|key, val| map[key] = val}
end

#initialize_from_hash(hash) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 126

def initialize_from_hash(hash)
  map = self
  map.update(hash)
  map.default = hash.default
end

#inspect(*args, &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 452

def inspect(*args, &block)
  super.inspect
end

#invert ⇒ Object 



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# File 'lib/motion-map/map.rb', line 430

def invert
  inverted = klass.allocate
  inverted.default = self.default
  keys.each{|key| inverted[self[key]] = key }
  inverted
end

#keep_if(&block) ⇒ Object

See: github.com/rubinius/rubinius/blob/98c516820d9f78bd63f29dab7d5ec9bc8692064d/kernel/common/hash19.rb#L476-L484

Raises:

  • (RuntimeError) 


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# File 'lib/motion-map/map.rb', line 328

def keep_if( &block )
  raise RuntimeError.new( "can't modify frozen #{ self.class.name }" ) if frozen?
  return to_enum( :keep_if ) unless block_given?
  each { | key , val | delete key unless yield( key , val ) }
  self
end

#key?(key) ⇒ Boolean Also known as: include?, has_key?, member?

Returns:

  • (Boolean) 


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# File 'lib/motion-map/map.rb', line 237

def key?(key)
  super(convert_key(key))
end

#key_for(*keys) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 885

def key_for(*keys)
  self.class.key_for(*keys)
end

#keys ⇒ Object 



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# File 'lib/motion-map/map.rb', line 97

def keys
  @keys ||= []
end

#klass ⇒ Object 



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# File 'lib/motion-map/map.rb', line 137

def klass
  self.class
end

#last ⇒ Object 



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# File 'lib/motion-map/map.rb', line 280

def last
  [keys.last, self[keys.last]]
end

#leaf_for(key, options = {}, &block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 787

def leaf_for(key, options = {}, &block)
  leaf = self
  key = Array(key).flatten
  k = key.first

  key.each_cons(2) do |a, b|
    exists = MotionMap::Map.collection_has?(leaf, a)

    case b
      when Numeric
        if options[:autovivify]
          MotionMap::Map.collection_set(leaf, a, Array.new) unless exists
        end

      when String, Symbol
        if options[:autovivify]
          MotionMap::Map.collection_set(leaf, a, MotionMap::Map.new) unless exists
        end
    end

    leaf = MotionMap::Map.collection_key(leaf, a)
    k = b
  end

  block ? block.call(leaf, k) : [leaf, k]
end

#map_for(hash) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 146

def map_for(hash)
  klass.map_for(hash)
end

#merge(*args) ⇒ Object Also known as: + 



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# File 'lib/motion-map/map.rb', line 250

def merge(*args)
  copy.update(*args)
end

#pop ⇒ Object 



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# File 'lib/motion-map/map.rb', line 374

def pop
  unless empty?
    key = keys.last
    val = delete(key)
    [key, val]
  end
end

#push(*args) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 362

def push(*args)
  MotionMap::Map.each_pair(*args) do |key, val|
    if key?(key)
      delete(key)
    else
      keys.push(key)
    end
    __set__(key, val)
  end
  self
end

#reject(&block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 437

def reject(&block)
  dup.delete_if(&block)
end

#reject!(&block) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 441

def reject!(&block)
  hash = reject(&block)
  self == hash ? nil : hash
end

#reorder(order = {}) ⇒ Object

reordering support



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# File 'lib/motion-map/map.rb', line 410

def reorder(order = {})
  order = MotionMap::Map.for(order)
  map = MotionMap::Map.new
  keys = order.depth_first_keys | depth_first_keys
  keys.each{|key| map.set(key, get(key))}
  map
end

#reorder!(order = {}) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 418

def reorder!(order = {})
  replace(reorder(order))
end

#replace(*args) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 335

def replace(*args)
  clear
  update(*args)
end

#respond_to?(method, *args, &block) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/motion-map/map.rb', line 506

def respond_to?(method, *args, &block)
  has_key = has_key?(method)
  setter = method.to_s =~ /=\Z/o
  !!((!has_key and setter) or has_key or super)
end

#reverse_merge(hash) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 255

def reverse_merge(hash)
  map = copy
  map.each{|key, val| MotionMap::Map[key] = val unless MotionMap::Map.key?(key)}
  map
end

#reverse_merge!(hash) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 261

def reverse_merge!(hash)
  replace(reverse_merge(hash))
end

#rm(*args) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 814

def rm(*args)
  paths, path = args.partition{|arg| arg.is_a?(Array)}
  paths.push(path)

  paths.each do |path|
    if path.size == 1
      delete(*path)
      next
    end

    branch, leaf = path[0..-2], path[-1]
    collection = get(branch)

    case collection
      when Hash
        key = leaf
        collection.delete(key)
      when Array
        index = leaf
        collection.delete_at(index)
      else
        raise(IndexError, "(#{ collection.inspect }).rm(#{ path.inspect })")
    end
  end
  paths
end

#select ⇒ Object 



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# File 'lib/motion-map/map.rb', line 446

def select
  array = []
  each{|key, val| array << [key,val] if yield(key, val)}
  array
end

#set(*args) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 672

def set(*args)
  case
    when args.empty?
      return []
    when args.size == 1 && args.first.is_a?(Hash)
      hash = args.shift
    else
      hash = {}
      value = args.pop
      key = Array(args).flatten
      hash[key] = value
  end

  strategy = hash.map{|key, value| [Array(key), value]}

  strategy.each do |key, value|
    leaf_for(key, :autovivify => true) do |leaf, k|
      MotionMap::Map.collection_set(leaf, k, value)
    end
  end

  self
end

#shift ⇒ Object

ordered container specific methods



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# File 'lib/motion-map/map.rb', line 342

def shift
  unless empty?
    key = keys.first
    val = delete(key)
    [key, val]
  end
end

#to_array ⇒ Object Also known as: to_a 



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# File 'lib/motion-map/map.rb', line 465

def to_array
  array = []
  each{|*pair| array.push(pair)}
  array
end

#to_hash ⇒ Object 



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# File 'lib/motion-map/map.rb', line 456

def to_hash
  hash = Hash.new(default)
  each do |key, val|
    val = val.to_hash if val.respond_to?(:to_hash)
    hash[key] = val
  end
  hash
end

#to_list ⇒ Object 



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# File 'lib/motion-map/map.rb', line 472

def to_list
  list = []
  each_pair do |key, val|
    list[key.to_i] = val if(key.is_a?(Numeric) or key.to_s =~ %r/^\d+$/)
  end
  list
end

#to_s ⇒ Object 



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# File 'lib/motion-map/map.rb', line 480

def to_s
  to_array.to_s
end

#unshift(*args) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 350

def unshift(*args)
  MotionMap::Map.each_pair(*args) do |key, val|
    if key?(key)
      delete(key)
    else
      keys.unshift(key)
    end
    __set__(key, val)
  end
  self
end

#update(*args) ⇒ Object Also known as: merge! 



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# File 'lib/motion-map/map.rb', line 244

def update(*args)
  MotionMap::Map.each_pair(*args){|key, val| store(key, val)}
  self
end

#values ⇒ Object Also known as: vals 



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# File 'lib/motion-map/map.rb', line 265

def values
  array = []
  keys.each{|key| array.push(self[key])}
  array
end

#values_at(*keys) ⇒ Object 



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# File 'lib/motion-map/map.rb', line 272

def values_at(*keys)
  keys.map{|key| self[key]}
end