Class: ReVIEW::YAMLLoader

Inherits:
Object show all
Defined in:
lib/review/yamlloader.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ YAMLLoader

Returns a new instance of YAMLLoader.



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# File 'lib/review/yamlloader.rb', line 5

def initialize
end

Instance Method Details

#load_file(yamlfile) ⇒ Object

load YAML files

‘inherit: [3.yml, 6.yml]` in 7.yml; `inherit: [1.yml, 2.yml]` in 3.yml; `inherit: [4.yml, 5.yml]` in 6.yml

=> 7.yml > 6.yml > 5.yml > 4.yml > 3.yml > 2.yml > 1.yml



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# File 'lib/review/yamlloader.rb', line 13

def load_file(yamlfile)
  file_queue = [File.expand_path(yamlfile)]
  loaded_files = {}
  yaml = {}

  loop do
    # Check exit condition
    if file_queue.empty?
      return yaml
    end

    current_file = file_queue.shift
    current_yaml = YAML.load_file(current_file)
    yaml = current_yaml.deep_merge(yaml)

    if yaml.key?('inherit')
      buf = []
      yaml['inherit'].reverse_each do |item|
        inherit_file = File.expand_path(item, File.dirname(yamlfile))

        # Check loop
        if loaded_files[inherit_file]
          raise "Found circular YAML inheritance '#{inherit_file}' in #{yamlfile}."
        end

        loaded_files[inherit_file] = true
        buf << inherit_file
      end
      yaml.delete('inherit')
      file_queue = buf + file_queue
    end
  end
end