class NeverBounce::CLI::Feature::Envars::ExamplesMapper

A simple transformer/validator for examples argument.

@see process

Public Instance Methods

[](input)
Alias for: process
process(input) click to toggle source

Process input, render output.

process([1, 2, 3])            # => {values: [1, 2, 3]}
process([1, 2, default: 3])   # => {values: [1, 2, 3], default: 3}

@param input [Array] Items to process. @return [Hash] A hash with values and optionally default.

# File lib/never_bounce/cli/feature/envars/examples_mapper.rb, line 16
def process(input)
  values, default = [], nil

  input.each do |elem|
    if elem.is_a? Hash
      # Validate, then use.
      raise ArgumentError, "Unknown element format: #{elem.inspect}" if elem.keys != [:default]
      values << (default = elem[:default])
    else
      values << elem
    end
  end

  # Return result.
  {}.tap do |h|
    h[:values] = values
    h[:default] = default if default
  end
end
Also aliased as: []