class Thor::Option

:nodoc:

def self.parse(key, value)


By default all options are optional, unless :required is given.

string (--foo=value) or booleans (just --foo).
is given a default type is assumed. This default type accepts arguments as
The valid types are :boolean, :numeric, :hash, :array and :string. If none

#=> Option foo with default value true and type boolean
parse :foo => true

#=> Option foo without default value and type numeric
parse :foo => :numeric

#=> Option foo with default value 2 and type numeric
parse :foo => 2

#=> Required option foo without default value
parse :foo => :required

#=> Option foo with default value bar and alias :baz
parse [:foo, :baz] => "bar"

#=> Option foo with default value bar
parse :foo => "bar"

assumptions, but you can be more specific using the option method.
This parse quick options given as method_options. It makes several 
def self.parse(key, value)
  if key.is_a?(Array)
    name, *aliases = key
  else
    name = key
    aliases = []
  end
  name    = name.to_s
  default = value
  type = case value
  when Symbol
    default = nil
    if VALID_TYPES.include?(value)
      value
    elsif required = (value == :required) # rubocop:disable AssignmentInCondition
      :string
    end
  when TrueClass, FalseClass
    :boolean
  when Numeric
    :numeric
  when Hash, Array, String
    value.class.name.downcase.to_sym
  end
  new(name.to_s, :required => required, :type => type, :default => default, :aliases => aliases)
end

def dasherize(str) 

def dasherize(str)
  (str.length > 1 ? "--" : "-") + str.tr("_", "-")
end

def dasherized? 

def dasherized?
  name.index("-") == 0
end

def human_name 

def human_name
  @human_name ||= dasherized? ? undasherize(name) : name
end

def initialize(name, options = {}) 

def initialize(name, options = {})
  @check_default_type = options[:check_default_type]
  options[:required] = false unless options.key?(:required)
  @repeatable     = options.fetch(:repeatable, false)
  super
  @lazy_default   = options[:lazy_default]
  @group          = options[:group].to_s.capitalize if options[:group]
  @aliases        = Array(options[:aliases])
  @hide           = options[:hide]
end

def switch_name 

def switch_name
  @switch_name ||= dasherized? ? name : dasherize(name)
end

def undasherize(str) 

def undasherize(str)
  str.sub(/^-{1,2}/, "")
end

def usage(padding = 0) 

def usage(padding = 0)
  sample = if banner && !banner.to_s.empty?
    "#{switch_name}=#{banner}".dup
  else
    switch_name
  end
  sample = "[#{sample}]".dup unless required?
  if boolean?
    sample << ", [#{dasherize('no-' + human_name)}]" unless (name == "force") || name.start_with?("no-")
  end
  if aliases.empty?
    (" " * padding) << sample
  else
    "#{aliases.join(', ')}, #{sample}"
  end
end

def validate! 

def validate!
  raise ArgumentError, "An option cannot be boolean and required." if boolean? && required?
  validate_default_type!
end

def validate_default_type! 

def validate_default_type!
  default_type = case @default
  when nil
    return
  when TrueClass, FalseClass
    required? ? :string : :boolean
  when Numeric
    :numeric
  when Symbol
    :string
  when Hash, Array, String
    @default.class.name.downcase.to_sym
  end
  expected_type = (@repeatable && @type != :hash) ? :array : @type
  if default_type != expected_type
    err = "Expected #{expected_type} default value for '#{switch_name}'; got #{@default.inspect} (#{default_type})"
    if @check_default_type
      raise ArgumentError, err
    elsif @check_default_type == nil
      Thor.deprecation_warning "#{err}.\n" +
        'This will be rejected in the future unless you explicitly pass the options `check_default_type: false`' +
        ' or call `allow_incompatible_default_type!` in your code'
    end
  end
end