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Contents
module Tins
module DeepConstGet
if ::Object.method(:const_defined?).arity == 1
# :nocov:
# We do not create coverage on 1.8
def self.const_defined_in?(modul, constant)
modul.const_defined?(constant)
end
# :nocov:
else
def self.const_defined_in?(modul, constant)
modul.const_defined?(constant, false)
end
end
def deep_const_get(path, start_module = Object)
path.to_s.split('::').inject(start_module) do |p, c|
case
when c.empty?
if start_module == Object
Object
else
raise ArgumentError, "top level constants cannot be reached from"\
" start module #{start_module.inspect}"
end
when ::Tins::DeepConstGet.const_defined_in?(p, c) then p.const_get(c)
else
begin
p.const_missing(c)
rescue NameError => e
raise ArgumentError, "can't get const #{path}: #{e}"
end
end
end
end
end
end
Version data entries
29 entries across 28 versions & 3 rubygems