module TimeScales

# File lib/time_scales.rb, line 12
def self.[](hash_or_first_part, *args)
  defines_type =
    Symbol === hash_or_first_part ||
    hash_or_first_part.respond_to?(:to_time_scales_part) ||
    hash_or_first_part.respond_to?(:to_time_scales_unit)
  if defines_type
    TimeScales::Frame.type_for( hash_or_first_part, *args )
  elsif hash_or_first_part.respond_to?( :to_hash ) || hash_or_first_part.respond_to?( :to_h )
    raise ArgumentError, "Must supply only a hash argument when first argument is a hash" unless args.empty?
    hash = hash_or_first_part.to_hash if hash_or_first_part.respond_to?( :to_hash )
    hash = hash_or_first_part.to_h if hash_or_first_part.respond_to?( :to_h )
    TimeScales::Frame[ hash_or_first_part ]
  else
    raise ArgumentError, "Must supply time-part key arguments or a single hash as arguments"
  end
end