method

const_regexp

v4.2.7 - Show latest stable - 0 notes - Class: ActiveSupport::Inflector

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What's this?

const_regexp(camel_cased_word) private

Mounts a regular expression, returned as a string to ease interpolation, that will match part by part the given constant.

const_regexp("Foo::Bar::Baz") # => "Foo(::Bar(::Baz)?)?"
const_regexp("::")            # => "::"

Show source

# File activesupport/lib/active_support/inflector/methods.rb, line 355
    def const_regexp(camel_cased_word) #:nodoc:
      parts = camel_cased_word.split("::")

      return Regexp.escape(camel_cased_word) if parts.blank?

      last  = parts.pop

      parts.reverse.inject(last) do |acc, part|
        part.empty? ? acc : "#{part}(::#{acc})?"
      end
    end

const_regexp

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