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Module: RuboCop::YAMLDuplicationChecker Private

Do not use. This module is for internal use only.
Relationships & Source Files
Defined in: lib/rubocop/yaml_duplication_checker.rb

Overview

Find duplicated keys from YAML.

Class Method Summary

Class Method Details

.check(yaml_string, filename, &on_duplicated)

[ GitHub ] 

  


# File 'lib/rubocop/yaml_duplication_checker.rb', line 7



def self.check(yaml_string, filename, &on_duplicated)
  # Ruby 2.6+
  tree = if Gem::Version.new(Psych::VERSION) >= Gem::Version.new('3.1.0')
           # Specify filename to display helpful message when it raises
           # an error.
           YAML.parse(yaml_string, filename: filename)
         else
           YAML.parse(yaml_string, filename)
         end
  return unless tree

  traverse(tree, &on_duplicated)
end


  








  

    .traverse(tree, &on_duplicated)   (private)
  

  [ GitHub ]


  

  


# File 'lib/rubocop/yaml_duplication_checker.rb', line 21



def self.traverse(tree, &on_duplicated)
  case tree
  when Psych::Nodes::Mapping
    tree.children.each_slice(2).with_object([]) do |(key, value), keys|
      exist = keys.find { |key2| key2.value == key.value }
      yield(exist, key) if exist
      keys << key
      traverse(value, &on_duplicated)
    end
  else
    children = tree.children
    return unless children

    children.each { |c| traverse(c, &on_duplicated) }
  end
end