Class: ConstStricter::ConstResolver::ConstLookup

Inherits:
Object
  • Object
show all
Defined in:
lib/const_stricter/const_resolver.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ConstLookup

Returns a new instance of ConstLookup.



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# File 'lib/const_stricter/const_resolver.rb', line 37

def initialize
  @resolved_paths = []
end

Instance Attribute Details

#cache ⇒ Object

Returns the value of attribute cache.



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# File 'lib/const_stricter/const_resolver.rb', line 35

def cache
  @cache
end

#resolved_paths ⇒ Object

Returns the value of attribute resolved_paths.



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# File 'lib/const_stricter/const_resolver.rb', line 35

def resolved_paths
  @resolved_paths
end

Instance Method Details

#find_constant(namespace:, const_name:, inherit: false) ⇒ Object 



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# File 'lib/const_stricter/const_resolver.rb', line 41

def find_constant(namespace:, const_name:, inherit: false)
  cache_key = { namespace:, const_name: }
  return @cache[cache_key] if @cache.key?(cache_key)

  resolved_paths << cache_key

  (namespace ? Object.const_get(namespace) : Object).const_get(const_name, inherit)
rescue NameError => e
  missing_name =
    if e.respond_to?(:missing_name)
      # activesupport/lib/active_support/core_ext/name_error.rb
      e.missing_name
    else
      e.message[/uninitialized constant (.+)$/, 1]
    end

  if missing_name != const_name &&
     !const_name.start_with?(missing_name) &&
     missing_name.delete_prefix("#{namespace}::") != const_name
    # срабатывание может быть вызвано не искомой константой,
    # а тем, что есть несвязанная ошибка в коде вызываемого класса/модуля
    raise
  end

  if namespace
    const_path = ConstName.new(ConstName.split(namespace))
    const_path.pop

    find_constant(namespace: const_path.full_name, const_name:, inherit:)
  end
end