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# File 'lib/arguments/class.rb', line 2
def named_arguments_for *methods
methods = instance_methods - Object.methods if methods.empty?
methods.each do |meth|
meth = meth.to_s
klass = meth.sub!(/^self./, '') ? (class << self; self; end) : self
names = Arguments.names klass, meth
next if names.empty? or names.inject(false) { |bol, pair| bol || /^\*/ === pair.first.to_s }
assigns = []
names.pop if /^&/ === names[-1][0].to_s
names.each_with_index do |name, index|
unless name.size == 1
assigns << " \#{ name.first } =\n if opts.key? :\#{ name.first }\n opts.delete :\#{ name.first }\n else\n args.size >= \#{ index + 1 } ? args[\#{ index }] : \#{ name.last }\n end\n RUBY_EVAL\n else\n assigns << <<-RUBY_EVAL \n begin\n \#{ name.first } = opts.key?(:\#{ name.first }) ? opts.delete(:\#{ name.first }) : args.fetch(\#{ index })\n rescue \n raise ArgumentError.new('passing `\#{ name.first }` is required')\n end\n RUBY_EVAL\n end\n end\n\n klass.module_eval <<-RUBY_EVAL, __FILE__, __LINE__\n def __\#{ meth }_with_keyword_arguments *args, &block\n opts = args.last.kind_of?( Hash ) && args.size < \#{ names.size } ? args.pop : {}\n \#{ assigns.join(\"\\n\") }\n unless opts.empty?\n raise ArgumentError.new(\"`\\\#{ opts.keys.join(', ') }` \\\#{ opts.size == 1 ? 'is not a recognized argument keyword' : 'are not recognized argument keywords' }\") \n end\n __original_\#{ meth } \#{ names.collect{ |n| n.first }.join(', ') }, &block\n end\n \n alias __original_\#{ meth } \#{ meth }\n alias \#{ meth } __\#{ meth }_with_keyword_arguments\n RUBY_EVAL\n end\nend\n"
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