module Minitel::StrictArgs

Public Instance Methods

enforce(args, required, allowed=[], uuid_field=nil) click to toggle source
# File lib/minitel/strict_args.rb, line 4
def enforce(args, required, allowed=[], uuid_field=nil)
  ensure_strict_args(args.keys, required, allowed)
  ensure_no_nils(args, required)
  ensure_is_uuid(args[uuid_field]) if uuid_field
end
ensure_is_uuid(uuid) click to toggle source
# File lib/minitel/strict_args.rb, line 28
def ensure_is_uuid(uuid)
  unless uuid =~ /\A[a-f0-9]{8}-[a-f0-9]{4}-4[a-f0-9]{3}-[89ab][a-f0-9]{3}-[a-f0-9]{12}\z/i
    raise ArgumentError, "'#{uuid.inspect}' not formated like a uuid"
  end
end
ensure_no_nils(args, keys) click to toggle source
# File lib/minitel/strict_args.rb, line 22
def ensure_no_nils(args, keys)
  keys.each do |key|
   raise ArgumentError, "keyword #{key} is nil" unless args[key]
  end
end
ensure_strict_args(keys, required, allowed) click to toggle source

A Ruby 2.1 required keyword argument sorta backport

# File lib/minitel/strict_args.rb, line 11
def ensure_strict_args(keys, required, allowed)
  missing = required - keys
  unless missing.empty?
    raise ArgumentError, "missing keywords: #{missing.join(', ')}"
  end
  unknown = keys - (required + allowed)
  unless unknown.empty?
    raise ArgumentError, "extra keywords: #{unknown.join(', ')}"
  end
end