class RSpec::Core::Metadata

@see Configuration#filter_run_excluding
@see Configuration#filter_run_including
@see FilterManager
@see ExampleGroup.metadata
@see Example#metadata
run (e.g. ‘filter_run_including`, `filter_run_excluding`, etc).
the command line, or several methods on `Configuration` used to filter a
then be used to select which examples are run using the `–tag` option on
`:slow => true` is stored in the Metadata owned by the example. These can
`:type => :ui` is stored in the Metadata owned by the example group, and
end
end
# …
it “does something”, :slow => true do
describe Something, :type => :ui do
user-supplied metadata, e.g.
In addition to metadata that is used internally, this also stores
associated with keys that may or may not be used by any example or group.
Metadata, which is Hash extended to support lazy evaluation of values
Each ExampleGroup class and Example instance owns an instance of

def self.relative_path(line) 

def self.relative_path(line)
  line = line.sub(File.expand_path("."), ".")
  line = line.sub(/\A([^:]+:\d+)$/, '\\1')
  return nil if line == '-e:1'
  line
rescue SecurityError
  nil
end

def all_apply?(filters)

Other tags:
    Private: - 
def all_apply?(filters)
  filters.all? {|k,v| filter_applies?(k,v)}
end

def any_apply?(filters)

Other tags:
    Private: - 
def any_apply?(filters)
  filters.any? {|k,v| filter_applies?(k,v)}
end

def configure_for_example(description, user_metadata) 

def configure_for_example(description, user_metadata)
  store(:description_args, [description]) if description
  store(:caller, user_metadata.delete(:caller) || caller)
  update(user_metadata)
end

def ensure_valid_keys(user_metadata) 

def ensure_valid_keys(user_metadata)
  RESERVED_KEYS.each do |key|
    if user_metadata.has_key?(key)
      raise <<-EOM
      #{"*"*50}
} is not allowed
reserves some hash keys for its own internal use,
ing :#{key}, which is used on:
      #{CallerFilter.first_non_rspec_line}.
re all of RSpec's reserved hash keys:
      #{RESERVED_KEYS.join("\n  ")}
      #{"*"*50}
      EOM
    end
  end
end

def example_group_declaration_line(locations) 

def example_group_declaration_line(locations)
  locations[File.expand_path(self[:example_group][:file_path])] if self[:example_group]
end

def filter_applies?(key, value, metadata=self)

Other tags:
    Private: - 
def filter_applies?(key, value, metadata=self)
  return metadata.filter_applies_to_any_value?(key, value) if Array === metadata[key] && !(Proc === value)
  if key == :line_numbers
    unless Metadata.line_number_filter_deprecation_issued
      RSpec.deprecate("Filtering by `:line_numbers`",
                      :replacement => "filtering by `:locations`")
    end
    return metadata.line_number_filter_applies?(value)
  end
  return metadata.location_filter_applies?(value)          if key == :locations
  return metadata.filters_apply?(key, value)               if Hash === value
  return false unless metadata.has_key?(key)
  case value
  when Regexp
    metadata[key] =~ value
  when Proc
    case value.arity
    when 0 then value.call
    when 2 then value.call(metadata[key], metadata)
    else value.call(metadata[key])
    end
  else
    metadata[key].to_s == value.to_s
  end
end

def filter_applies_to_any_value?(key, value)

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    Private: - 
def filter_applies_to_any_value?(key, value)
  self[key].any? {|v| filter_applies?(key, v, {key => value})}
end

def filters_apply?(key, value)

Other tags:
    Private: - 
def filters_apply?(key, value)
  value.all? {|k, v| filter_applies?(k, v, self[key])}
end

def for_example(description, user_metadata)

Other tags:
    Private: - 
def for_example(description, user_metadata)
  dup.extend(ExampleMetadataHash).configure_for_example(description, user_metadata)
end

def initialize(parent_group_metadata=nil) 

def initialize(parent_group_metadata=nil)
  if parent_group_metadata
    update(parent_group_metadata)
    store(:example_group, {:example_group => parent_group_metadata[:example_group].extend(GroupMetadataHash)}.extend(GroupMetadataHash))
  else
    store(:example_group, {}.extend(GroupMetadataHash))
  end
  yield self if block_given?
end

def line_number_filter_applies?(line_numbers)

Other tags:
    Private: - 
def line_number_filter_applies?(line_numbers)
  preceding_declaration_lines = line_numbers.map {|n| RSpec.world.preceding_declaration_line(n)}
  !(relevant_line_numbers & preceding_declaration_lines).empty?
end

def location_filter_applies?(locations)

Other tags:
    Private: - 
def location_filter_applies?(locations)
  # it ignores location filters for other files
  line_number = example_group_declaration_line(locations)
  line_number ? line_number_filter_applies?(line_number) : true
end

def process(*args)

Other tags:
    Private: - 
def process(*args)
  user_metadata = args.last.is_a?(Hash) ? args.pop : {}
  ensure_valid_keys(user_metadata)
  self[:example_group].store(:description_args, args)
  self[:example_group].store(:caller, user_metadata.delete(:caller) || caller)
  self[:example_group][:description_arg_behavior_changing_in_rspec_3] = user_metadata.delete(:description_arg_behavior_changing_in_rspec_3)
  update(user_metadata)
end

def relevant_line_numbers(metadata=self)

metadata[:example_group] is not always a kind of GroupMetadataHash.
TODO - make this a method on metadata - the problem is 
def relevant_line_numbers(metadata=self)
  [metadata[:line_number]] + (metadata[:example_group] ? relevant_line_numbers(metadata[:example_group]) : [])
end