module Roda::RodaPlugins::Base::RequestClassMethods

def cached_matcher(obj)

basic pattern to a pattern that does not match partial segments.
not already cached, yield to get the basic pattern, and convert the
Return the cached pattern for the given object. If the object is 
def cached_matcher(obj)
  cache = @match_pattern_cache
  unless pattern = cache[obj]
    pattern = cache[obj] = consume_pattern(yield)
  end
  pattern
end

def consume_pattern(pattern)

segments.
pattern requires the path starts with a string and does not match partial
The pattern to use for consuming, based on the given argument. The returned 
def consume_pattern(pattern)
  /\A\/(?:#{pattern})(?=\/|\z)/
end

def inspect

reflect the likely name for the class.
and then assigned to a constant of the Roda subclass, make inspect
Since RodaRequest is anonymously subclassed when Roda is subclassed, 
def inspect
  "#{roda_class.inspect}::RodaRequest"
end