Class: Aws::Templates::Utils::Contextualized::Filter::Override

Inherits:
Aws::Templates::Utils::Contextualized::Filter show all
Defined in:
lib/aws/templates/utils/contextualized/filter/override.rb

Overview

Override specified keys in options hash

The filter performs merge the hash passed at initialization with options hash. Either hash itself or block returning a hash can be specified. The block will be evaluated in instance context so all instance methods are accessible.

Example

class Piece
  include Aws::Templates::Utils::Contextualized

  contextualize filter(:copy) & filter(:override, a: 12, b: 15, c: { d: 30 })
end

i = Piece.new
opts = Options.new(c: { e: 1 })
opts.filter(i.filter) # => { a: 12, b: 15, c: { d: 30, e: 1 } }

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Aws::Templates::Utils::Contextualized::Filter

#&, #to_filter, #to_proc

Constructor Details

#initialize(override = nil, &override_block) ⇒ Override

Returns a new instance of Override.



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# File 'lib/aws/templates/utils/contextualized/filter/override.rb', line 32

def initialize(override = nil, &override_block)
  @override = _check_override_type(override || override_block)
end

Instance Attribute Details

#override ⇒ Object (readonly)

Returns the value of attribute override.



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# File 'lib/aws/templates/utils/contextualized/filter/override.rb', line 30

def override
  @override
end

Instance Method Details

#filter(_, memo, instance) ⇒ Object 



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# File 'lib/aws/templates/utils/contextualized/filter/override.rb', line 36

def filter(_, memo, instance)
  Utils.merge(
    memo,
    if override.respond_to?(:to_hash)
      override
    elsif override.respond_to?(:to_proc)
      instance.instance_eval(&override)
    end
  )
end