class ArchSpec::Rules::MustImplementOneOfRule

# File lib/archspec/rules/protocol_rules.rb, line 186
def initialize(source, method_names, scope: :instance)
  ProtocolEvidence.validate_scope!(scope, for_rule: 'must_implement_one_of')
  @source = source.to_sym
  names = Array(method_names).flatten.compact
  raise Error, 'must_implement_one_of requires at least one method' if names.empty?

  @method_names = names.map(&:to_sym)
  @scope = scope
end

# File lib/archspec/rules/protocol_rules.rb, line 209
def evaluate(graph)
  constants_for(graph).filter_map do |constant|
    methods, unresolved =
      if scope == :class
        graph.effective_class_methods(constant.name)
      else
        graph.effective_instance_methods(constant.name)
      end
    next if method_names.any? { |method_name| methods.include?(method_name) }

    sigil = scope == :class ? '.' : '#'
    choices = method_names.map { |name| "#{sigil}#{name}" }.join(', ')
    Diagnostic.new(
      rule: id,
      message: "#{constant.name} must implement one of #{choices}",
      location: constant.location,
      evidence: ProtocolEvidence.for(constant, methods, unresolved, scope: scope),
      confidence: unresolved.empty? ? :high : :medium
    )
  end
end

# File lib/archspec/rules/protocol_rules.rb, line 205
def id
  'protocol.must_implement_one_of'
end

# File lib/archspec/rules/protocol_rules.rb, line 200
def merge!(other)
  @method_names |= other.method_names
  self
end

# File lib/archspec/rules/protocol_rules.rb, line 196
def merge_key
  [self.class, source, scope]
end