Class: Map

Inherits:
Hash
  • Object
show all
Defined in:
lib/map.rb,
lib/map/params.rb,
lib/map/struct.rb,
lib/map/options.rb,
lib/map/integrations/active_record.rb

Defined Under Namespace

Modules: Arguments, Integrations, Options, Param Classes: Struct

Constant Summary collapse

Version =
'6.6.0'
Load =
Kernel.method(:load)
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/map.rb', line 204

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/map.rb', line 639

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/map.rb', line 892

def Map._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|
        Map._explode(key + [k], v, accum)
      end

    when Hash
      accum[:branches].push([key, Map])

      value.each do |k, v|
        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/map.rb', line 917

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

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

.add_conversion_method!(method) ⇒ Object


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# File 'lib/map.rb', line 98

def add_conversion_method!(method)
  if define_conversion_method!(method)
    method = method.to_s.strip
    raise ArguementError if method.empty?
    module_eval(<<-__, __FILE__, __LINE__)
      unless conversion_methods.include?(#{ method.inspect })
        conversion_methods.unshift(#{ method.inspect })
      end
    __
    true
  else
    false
  end
end

.allocateObject


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# File 'lib/map.rb', line 33

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

.alphanumeric_key_for(key) ⇒ Object


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# File 'lib/map.rb', line 1022

def Map.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

.args_for_arity(args, arity) ⇒ Object


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

def args_for_arity(args, arity)
  arity = Integer(arity.respond_to?(:arity) ? arity.arity : arity)
  arity < 0 ? args.dup : args.slice(0, arity)
end

.bcall(*args, &block) ⇒ Object


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# File 'lib/map.rb', line 192

def bcall(*args, &block)
  args = Map.args_for_arity(args, block.arity)
  block.call(*args)
end

.blank?(value) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'lib/map.rb', line 729

def Map.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/map.rb', line 1095

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

  keys = 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

.call(object, method, *args, &block) ⇒ Object


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# File 'lib/map.rb', line 187

def call(object, method, *args, &block)
  args = Map.args_for_arity(args, object.method(method).arity)
  object.send(method, *args, &block)
end

.coerce(other) ⇒ Object


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# File 'lib/map.rb', line 54

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

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

Returns:

  • (Boolean)

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# File 'lib/map.rb', line 771

def Map.collection_has?(collection, key, &block)
  has_key =
    case collection
      when Array
        key = (Integer(key) rescue nil)
        !!collection.fetch(key) rescue false

      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/map.rb', line 749

def Map.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/map.rb', line 794

def Map.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/map.rb', line 926

def Map.combine(*args)
  Map.add(*args)
end

.conversion_methodsObject


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# File 'lib/map.rb', line 69

def conversion_methods
  @conversion_methods ||= (
    map_like = ancestors.select{|ancestor| ancestor <= Map}
    type_names = map_like.map do |ancestor|
      name = ancestor.name.to_s.strip
      next if name.empty?
      name.downcase.gsub(/::/, '_')
    end.compact
    list = type_names.map{|type_name| "to_#{ type_name }"}
    list.each{|method| define_conversion_method!(method)}
    list
  )
end

.convert_key(key) ⇒ Object


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# File 'lib/map.rb', line 257

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

.convert_value(value) ⇒ Object


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# File 'lib/map.rb', line 269

def self.convert_value(value)
  conversion_methods.each do |method|
    #return convert_value(value.send(method)) if value.respond_to?(method)
    hashlike = value.is_a?(Hash)
    if hashlike and value.respond_to?(method)
      value = value.send(method)
      break
    end
  end

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

.define_conversion_method!(method) ⇒ Object

Raises:

  • (ArguementError)

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# File 'lib/map.rb', line 83

def define_conversion_method!(method)
  method = method.to_s.strip
  raise ArguementError if method.empty?
  module_eval(<<-__, __FILE__, __LINE__)
    unless public_method_defined?(#{ method.inspect })
      def #{ method }
        self
      end
      true
    else
      false
    end
  __
end

.demongoize(object) ⇒ Object


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# File 'lib/map.rb', line 1164

def Map.demongoize(object)
  Map.for(object)
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/map.rb', line 1044

def Map.depth_first_each(enumerable, path = [], accum = [], &block)
  Map.pairs_for(enumerable) do |key, val|
    path.push(key)
    if((val.is_a?(Hash) or val.is_a?(Array)) and not val.empty?)
      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/map.rb', line 1061

def Map.depth_first_keys(enumerable, path = [], accum = [], &block)
  accum = Map.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/map.rb', line 1067

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

.descriptionObject


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

def description
  "the awesome ruby container you've always wanted: a string/symbol indifferent ordered hash that works in all rubies"
end

.each_pair(*args, &block) ⇒ Object

iterate over arguments in pairs smartly.


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# File 'lib/map.rb', line 115

def each_pair(*args, &block)
  size = args.size
  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
    conversion_methods.each do |method|
      if first.respond_to?(method)
        first = first.send(method)
        break
      end
    end

    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|
      k, v = pair[0..1]
      block.call(k, v)
    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

.evolve(object) ⇒ Object


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# File 'lib/map.rb', line 1168

def Map.evolve(object)
  Map.for(object)
end

.explode(hash) ⇒ Object


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# File 'lib/map.rb', line 874

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

  hash.each do |key, value|
    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/map.rb', line 47

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/map.rb', line 541

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

.intersection(a, b) ⇒ Object


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

def intersection(a, b)
  a, b, i = Map.for(a), Map.for(b), 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/map.rb', line 1034

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

.keys_for(enumerable) ⇒ Object


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# File 'lib/map.rb', line 1120

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

.libdir(*args, &block) ⇒ Object


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# File 'lib/map.rb', line 15

def libdir(*args, &block)
  @libdir ||= File.expand_path(__FILE__).sub(/\.rb$/,'')
  libdir = args.empty? ? @libdir : File.join(@libdir, *args.map{|arg| arg.to_s})
ensure
  if block
    begin
      $LOAD_PATH.unshift(libdir) unless $LOAD_PATH.first==libdir
      module_eval(&block)
    ensure
      $LOAD_PATH.shift() if $LOAD_PATH.first==libdir
    end
  end
end

.load(*args, &block) ⇒ Object


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# File 'lib/map.rb', line 29

def load(*args, &block)
  libdir{ Load.call(*args, &block) }
end

.map_for(hash) ⇒ Object


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# File 'lib/map.rb', line 248

def Map.map_for(hash)
  map = klass.coerce(hash)
  map.default = hash.default
  map
end

.match(haystack, needle) ⇒ Object


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# File 'lib/map.rb', line 178

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

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


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# File 'lib/map.rb', line 40

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

.options_for(*args, &block) ⇒ Object


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# File 'lib/map/options.rb', line 160

def Map.options_for(*args, &block)
  Map::Options.for(*args, &block)
end

.options_for!(*args, &block) ⇒ Object


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# File 'lib/map/options.rb', line 164

def Map.options_for!(*args, &block)
  Map::Options.for(*args, &block).pop
end

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


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# File 'lib/map.rb', line 1073

def Map.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

.struct(*args, &block) ⇒ Object


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# File 'lib/map/struct.rb', line 49

def Map.struct(*args, &block)
  new(*args, &block).struct
end

.tap(*args, &block) ⇒ Object


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# File 'lib/map.rb', line 63

def tap(*args, &block)
  new(*args).tap do |map|
    map.tap(&block) if block
  end
end

.update_options_for!(args, &block) ⇒ Object


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# File 'lib/map/options.rb', line 168

def Map.update_options_for!(args, &block)
  options = Map.options_for(args)
  block.call(options)
end

.versionObject


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# File 'lib/map.rb', line 7

def version
  Map::Version
end

Instance Method Details

#<=>(other) ⇒ Object


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# File 'lib/map.rb', line 515

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/map.rb', line 501

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

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

    else
      false
  end
end

#=~(hash) ⇒ Object


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# File 'lib/map.rb', line 521

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

#[](key) ⇒ Object


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

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

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


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

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/map.rb', line 332

alias_method '__get__', '[]'

#__set__Object

writer/reader methods


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# File 'lib/map.rb', line 331

alias_method '__set__', '[]='

#__update__Object


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# File 'lib/map.rb', line 333

alias_method '__update__', 'update'

#add(*args) ⇒ Object


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# File 'lib/map.rb', line 848

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 = Map.explode(hash)

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

  exploded[:leaves].each do |lkey, lvalue|
    set(lkey, lvalue)
  end

  self
end

#alphanumeric_key_for(key) ⇒ Object


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# File 'lib/map.rb', line 1030

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

#apply(other) ⇒ Object


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# File 'lib/map.rb', line 1015

def apply(other)
  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/map.rb', line 744

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

#breadth_first_each(*args, &block) ⇒ Object


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# File 'lib/map.rb', line 1137

def breadth_first_each(*args, &block)
  Map.breadth_first_each(self, *args, &block)
end

#clearObject


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

def clear
  keys.clear
  super
end

#cloneObject


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# File 'lib/map.rb', line 317

def clone
  copy
end

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

Returns:

  • (Boolean)

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# File 'lib/map.rb', line 790

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

#collection_key(*args, &block) ⇒ Object


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# File 'lib/map.rb', line 767

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

#collection_set(*args, &block) ⇒ Object


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# File 'lib/map.rb', line 820

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

#combine(*args, &block) ⇒ Object


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# File 'lib/map.rb', line 934

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

#combine!(*args, &block) ⇒ Object


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# File 'lib/map.rb', line 930

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

#contains(other) ⇒ Object Also known as: contains?


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# File 'lib/map.rb', line 1141

def contains(other)
  other = other.is_a?(Hash) ? Map.coerce(other) : other
  breadth_first_each{|key, value| return true if value == other}
  return false
end

#conversion_methodsObject

conversions


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# File 'lib/map.rb', line 576

def conversion_methods
  self.class.conversion_methods
end

#convert(key, val) ⇒ Object


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# File 'lib/map.rb', line 297

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

#convert_key(key) ⇒ Object


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

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

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


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# File 'lib/map.rb', line 288

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

#copyObject


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

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/map.rb', line 321

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/map.rb', line 325

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/map.rb', line 424

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

#delete_if(&block) ⇒ Object


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# File 'lib/map.rb', line 435

def delete_if(&block)
  to_delete = []

  each do |key, val|
    args = [key, val]
    to_delete.push(key) if !!Map.bcall(*args, &block)
  end

  to_delete.each{|key| delete(key)}

  self
end

#depth_first_each(*args, &block) ⇒ Object


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# File 'lib/map.rb', line 1125

def depth_first_each(*args, &block)
  Map.depth_first_each(self, *args, &block)
end

#depth_first_keys(*args, &block) ⇒ Object


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# File 'lib/map.rb', line 1129

def depth_first_keys(*args, &block)
  Map.depth_first_keys(self, *args, &block)
end

#depth_first_values(*args, &block) ⇒ Object


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# File 'lib/map.rb', line 1133

def depth_first_values(*args, &block)
  Map.depth_first_values(self, *args, &block)
end

#deserialize(object) ⇒ Object


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# File 'lib/map.rb', line 1160

def deserialize(object)
  ::Map.for(object)
end

#dupObject


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# File 'lib/map.rb', line 313

def dup
  copy
end

#eachObject Also known as: each_pair


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# File 'lib/map.rb', line 416

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

#each_keyObject


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# File 'lib/map.rb', line 406

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

#each_valueObject


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# File 'lib/map.rb', line 411

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

#each_with_indexObject

iterator methods


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# File 'lib/map.rb', line 401

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

#extractable_options?Boolean

for rails' extract_options! compat

Returns:

  • (Boolean)

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# File 'lib/map.rb', line 1150

def extractable_options?
  true
end

#fetch(key, *args, &block) ⇒ Object


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# File 'lib/map.rb', line 347

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

#firstObject


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# File 'lib/map.rb', line 391

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

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


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# File 'lib/map.rb', line 994

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/map.rb', line 1010

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/map.rb', line 672

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 Map.collection_has?(collection, k)
      collection = Map.collection_key(collection, k)
    else
      collection = nil
    end

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

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

#has?(*keys) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'lib/map.rb', line 706

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

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

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

  keys.each do |k|
    if Map.collection_has?(collection, k)
      collection = 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))

  Map.collection_has?(collection, key)
end

#idObject

Raises:

  • (NoMethodError)

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# File 'lib/map.rb', line 664

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/map.rb', line 237

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

#initialize_from_hash(hash) ⇒ Object


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# File 'lib/map.rb', line 231

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/map.rb', line 569

def inspect(*args, &block)
  require 'pp' unless defined?(PP)
  PP.pp(self, '')
end

#invertObject


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# File 'lib/map.rb', line 547

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

#keep_if(&block) ⇒ Object

Raises:

  • (RuntimeError)

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# File 'lib/map.rb', line 449

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/map.rb', line 352

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

#key_for(*keys) ⇒ Object


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# File 'lib/map.rb', line 1038

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

#keysObject

instance constructor


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# File 'lib/map.rb', line 200

def keys
  @keys ||= []
end

#klassObject

support methods


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

def klass
  self.class
end

#lastObject


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# File 'lib/map.rb', line 395

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

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


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# File 'lib/map.rb', line 940

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

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

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

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

    leaf = 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/map.rb', line 253

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

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


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# File 'lib/map.rb', line 365

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

#mongoizeObject


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# File 'lib/map.rb', line 1172

def mongoize
  self
end

#name_for(*args, &block) ⇒ Object


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# File 'lib/map/params.rb', line 26

def name_for(*args, &block)
  options = Map.options_for!(args)
  options[:value] = nil
  args.push(options)
  param_for(*args, &block)
end

#param_for(*args, &block) ⇒ Object


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# File 'lib/map/params.rb', line 2

def param_for(*args, &block)
  options = Map.options_for!(args)

  prefix = options[:prefix] || 'map'

  src_key = args.flatten.map{|arg| Map.alphanumeric_key_for(arg)}

  dst_key = src_key.map{|k| k.is_a?(Numeric) ? 0 : k}

  src = self
  dst = Map.new

  value =
    if options.has_key?(:value)
      options[:value]
    else
      src.get(src_key).to_s
    end

  dst.set(dst_key, value)

  Param.param_for(dst, prefix)
end

#popObject


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# File 'lib/map.rb', line 491

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

#push(*args) ⇒ Object


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# File 'lib/map.rb', line 481

def push(*args)
  Map.each_pair(*args) do |key, val|
    key = convert_key(key)
    delete(key)
    keys.push(key)
    __set__(key, val)
  end
  self
end

#reject(&block) ⇒ Object


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

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

#reject!(&block) ⇒ Object


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# File 'lib/map.rb', line 558

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

#reorder(order = {}) ⇒ Object

reordering support


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# File 'lib/map.rb', line 527

def reorder(order = {})
  order = Map.for(order)
  map = 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/map.rb', line 535

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

#replace(*args) ⇒ Object


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

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

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

Returns:

  • (Boolean)

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# File 'lib/map.rb', line 658

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/map.rb', line 370

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

#reverse_merge!(hash) ⇒ Object


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# File 'lib/map.rb', line 376

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

#rm(*args) ⇒ Object


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

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

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

    branch, leaf = p[0..-2], p[-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(#{ p.inspect })")
    end
  end
  paths
end

#selectObject


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# File 'lib/map.rb', line 563

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

#serialize(object) ⇒ Object

for mongoid type system support


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# File 'lib/map.rb', line 1156

def serialize(object)
  ::Map.for(object)
end

#set(*args) ⇒ Object


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# File 'lib/map.rb', line 824

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{|skey, svalue| [Array(skey), svalue]}

  strategy.each do |skey, svalue|
    leaf_for(skey, :autovivify => true) do |leaf, k|
      Map.collection_set(leaf, k, svalue)
    end
  end

  self
end

#shiftObject

ordered container specific methods


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# File 'lib/map.rb', line 463

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

#stringify_keysObject


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# File 'lib/map.rb', line 628

def stringify_keys; dup end

#stringify_keys!Object

oh rails - would that map.rb existed before all this non-sense…


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# File 'lib/map.rb', line 627

def stringify_keys!; self end

#structObject


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# File 'lib/map/struct.rb', line 45

def struct
  @struct ||= Struct.new(self)
end

#symbolize_keysObject


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# File 'lib/map.rb', line 630

def symbolize_keys; dup end

#symbolize_keys!Object


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# File 'lib/map.rb', line 629

def symbolize_keys!; self end

#to_arrayObject Also known as: to_a


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# File 'lib/map.rb', line 606

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

#to_hashObject Also known as: to_h


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

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_listObject


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# File 'lib/map.rb', line 613

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_optionsObject


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# File 'lib/map.rb', line 632

def to_options; dup end

#to_options!Object


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# File 'lib/map.rb', line 631

def to_options!; self end

#to_paramsObject


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# File 'lib/map/params.rb', line 33

def to_params
  to_params = Array.new

  depth_first_each do |key, val|
    to_params.push(param_for(key))
  end

  to_params.join('&')
end

#to_sObject


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# File 'lib/map.rb', line 621

def to_s
  to_array.to_s
end

#to_yaml(*args, &block) ⇒ Object


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# File 'lib/map.rb', line 602

def to_yaml(*args, &block)
  to_hash.to_yaml(*args, &block)
end

#unshift(*args) ⇒ Object


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# File 'lib/map.rb', line 471

def unshift(*args)
  Map.each_pair(*args) do |key, val|
    key = convert_key(key)
    delete(key)
    keys.unshift(key)
    __set__(key, val)
  end
  self
end

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


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# File 'lib/map.rb', line 359

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

#valuesObject Also known as: vals


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# File 'lib/map.rb', line 380

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

#values_at(*keys) ⇒ Object


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# File 'lib/map.rb', line 387

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

#with_indifferent_accessObject


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# File 'lib/map.rb', line 634

def with_indifferent_access; dup end

#with_indifferent_access!Object


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# File 'lib/map.rb', line 633

def with_indifferent_access!; self end