Class: Grape::Util::StackableValues

Inherits:
BaseInheritable show all
Defined in:
lib/grape/util/stackable_values.rb

Direct Known Subclasses

ReverseStackableValues

Instance Attribute Summary collapse

Attributes inherited from BaseInheritable

#inherited_values, #new_values

Instance Method Summary collapse

Methods inherited from BaseInheritable

#delete, #initialize_copy, #keys

Constructor Details

#initialize(*_args) ⇒ StackableValues

Returns a new instance of StackableValues.



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# File 'lib/grape/util/stackable_values.rb', line 10

def initialize(*_args)
  super

  @frozen_values = {}
end

Instance Attribute Details

#frozen_values ⇒ Object (readonly)

Returns the value of attribute frozen_values.



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# File 'lib/grape/util/stackable_values.rb', line 8

def frozen_values
  @frozen_values
end

Instance Method Details

#[](name) ⇒ Object

Even if there is no value, an empty array will be returned.



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# File 'lib/grape/util/stackable_values.rb', line 17

def [](name)
  return @frozen_values[name] if @frozen_values.key? name

  inherited_value = @inherited_values[name]
  new_value = @new_values[name] || []

  return new_value unless inherited_value

  concat_values(inherited_value, new_value)
end

#[]=(name, value) ⇒ Object 



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# File 'lib/grape/util/stackable_values.rb', line 28

def []=(name, value)
  raise if @frozen_values.key? name
  @new_values[name] ||= []
  @new_values[name].push value
end

#freeze_value(key) ⇒ Object 



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# File 'lib/grape/util/stackable_values.rb', line 40

def freeze_value(key)
  @frozen_values[key] = self[key].freeze
end

#to_hash ⇒ Object 



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# File 'lib/grape/util/stackable_values.rb', line 34

def to_hash
  keys.each_with_object({}) do |key, result|
    result[key] = self[key]
  end
end