Class: Interfacets::Shared::Entities::CollectionProxy

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/interfacets/shared/entities/collection_proxy.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(collection, wrap:, unwrap:) ⇒ CollectionProxy

Returns a new instance of CollectionProxy.



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 10

def initialize(collection, wrap:, unwrap:)
  @collection = collection
  @wrap = wrap
  @unwrap = unwrap
end

Instance Attribute Details

#unwrap ⇒ Object (readonly)

Returns the value of attribute unwrap.



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 9

def unwrap
  @unwrap
end

#wrap ⇒ Object (readonly)

Returns the value of attribute wrap.



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 9

def wrap
  @wrap
end

Instance Method Details

#<<(item) ⇒ Object

Mutation operations - unwrap items and delegate to underlying collection



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 52

def <<(item)
  @collection << @unwrap.call(item)
  self
end

#[](index) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 27

def [](index)
  val = @collection[index]
  val.nil? ? nil : @wrap.call(val)
end

#[]=(index, item) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 77

def []=(index, item)
  @collection[index] = @unwrap.call(item)
end

#at(index) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 32

def at(index)
  val = @collection.at(index)
  val.nil? ? nil : @wrap.call(val)
end

#clear ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 92

def clear
  @collection.clear
  self
end

#compact ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 172

def compact
  compacted = @collection.compact
  CollectionProxy.new(compacted, wrap: @wrap, unwrap: @unwrap)
end

#concat(other_array) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 102

def concat(other_array)
  @collection.concat(other_array.map { |item| @unwrap.call(item) })
  self
end

#delete(item) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 81

def delete(item)
  unwrapped = @unwrap.call(item)
  val = @collection.delete(unwrapped)
  val.nil? ? nil : @wrap.call(val)
end

#delete_at(index) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 87

def delete_at(index)
  val = @collection.delete_at(index)
  val.nil? ? nil : @wrap.call(val)
end

#drop(n) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 134

def drop(n)
  dropped = @collection.drop(n)
  CollectionProxy.new(dropped, wrap: @wrap, unwrap: @unwrap)
end

#drop_while(&block) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 139

def drop_while(&block)
  dropped = @collection.drop_while { |item| block.call(@wrap.call(item)) }
  CollectionProxy.new(dropped, wrap: @wrap, unwrap: @unwrap)
end

#each(&block) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 37

def each(&block)
  @collection.each { |item| block.call(@wrap.call(item)) }
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 47

def empty?
  @collection.empty?
end

#first ⇒ Object

Read operations - wrap items when accessing



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 17

def first
  val = @collection.first
  val.nil? ? nil : @wrap.call(val)
end

#insert(index, *items) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 97

def insert(index, *items)
  @collection.insert(index, *items.map { |item| @unwrap.call(item) })
  self
end

#last ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 22

def last
  val = @collection.last
  val.nil? ? nil : @wrap.call(val)
end

#pop ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 62

def pop
  val = @collection.pop
  val.nil? ? nil : @wrap.call(val)
end

#push(*items) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 57

def push(*items)
  @collection.push(*items.map { |item| @unwrap.call(item) })
  self
end

#reject(&block) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 119

def reject(&block)
  rejected = @collection.reject { |item| block.call(@wrap.call(item)) }
  CollectionProxy.new(rejected, wrap: @wrap, unwrap: @unwrap)
end

#replace(other_array) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 107

def replace(other_array)
  @collection.replace(other_array.map { |item| @unwrap.call(item) })
  self
end

#reverse ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 144

def reverse
  reversed = @collection.reverse
  CollectionProxy.new(reversed, wrap: @wrap, unwrap: @unwrap)
end

#select(&block) ⇒ Object Also known as: filter

Enumerable methods that return arrays should return CollectionProxy



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 113

def select(&block)
  selected = @collection.select { |item| block.call(@wrap.call(item)) }
  CollectionProxy.new(selected, wrap: @wrap, unwrap: @unwrap)
end

#shift ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 67

def shift
  val = @collection.shift
  val.nil? ? nil : @wrap.call(val)
end

#size ⇒ Object Also known as: length, count 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 41

def size
  @collection.size
end

#slice(*args) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 177

def slice(*args)
  sliced = @collection.slice(*args)
  if sliced.is_a?(Array)
    CollectionProxy.new(sliced, wrap: @wrap, unwrap: @unwrap)
  else
    # Single element access returns wrapped item
    sliced.nil? ? nil : @wrap.call(sliced)
  end
end

#sort(&block) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 149

def sort(&block)
  if block
    sorted = @collection.sort { |a, b| block.call(@wrap.call(a), @wrap.call(b)) }
  else
    sorted = @collection.sort
  end
  CollectionProxy.new(sorted, wrap: @wrap, unwrap: @unwrap)
end

#sort_by(&block) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 158

def sort_by(&block)
  sorted = @collection.sort_by { |item| block.call(@wrap.call(item)) }
  CollectionProxy.new(sorted, wrap: @wrap, unwrap: @unwrap)
end

#take(n) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 124

def take(n)
  taken = @collection.take(n)
  CollectionProxy.new(taken, wrap: @wrap, unwrap: @unwrap)
end

#take_while(&block) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 129

def take_while(&block)
  taken = @collection.take_while { |item| block.call(@wrap.call(item)) }
  CollectionProxy.new(taken, wrap: @wrap, unwrap: @unwrap)
end

#uniq(&block) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 163

def uniq(&block)
  if block
    uniqued = @collection.uniq { |item| block.call(@wrap.call(item)) }
  else
    uniqued = @collection.uniq
  end
  CollectionProxy.new(uniqued, wrap: @wrap, unwrap: @unwrap)
end

#unshift(*items) ⇒ Object 



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# File 'lib/interfacets/shared/entities/collection_proxy.rb', line 72

def unshift(*items)
  @collection.unshift(*items.map { |item| @unwrap.call(item) })
  self
end