Drop retained regexes

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 #### Features
 
-* Your contribution here.
+* [#2011](https://github.com/ruby-grape/grape/pull/2011): Reduce total retained regexes - [@ericproulx](https://github.com/ericproulx).
 
 #### Fixes
 

lib/grape/router.rb

@@ -8,10 +8,9 @@ class Router
  attr_reader :map, :compiled
 
  class Any < AttributeTranslator
- attr_reader :pattern, :regexp, :index
- def initialize(pattern, regexp, index, **attributes)
+ attr_reader :pattern, :index
+ def initialize(pattern, index, **attributes)
  @pattern = pattern
- @regexp = regexp
  @index = index
  super(attributes)
  end
@@ -39,18 +38,20 @@ def self.supported_methods
 
  def initialize
  @neutral_map = []
+ @neutral_regexes = []
  @map = Hash.new { |hash, key| hash[key] = [] }
  @optimized_map = Hash.new { |hash, key| hash[key] = // }
  end
 
  def compile!
  return if compiled
- @union = Regexp.union(@neutral_map.map(&:regexp))
+ @union = Regexp.union(@neutral_regexes)
+ @neutral_regexes = nil
  self.class.supported_methods.each do |method|
  routes = map[method]
  @optimized_map[method] = routes.map.with_index do |route, index|
  route.index = index
- route.regexp = Regexp.new("(?<_#{index}>#{route.pattern.to_regexp})")
+ Regexp.new("(?<_#{index}>#{route.pattern.to_regexp})")
  end
  @optimized_map[method] = Regexp.union(@optimized_map[method])
  end
@@ -62,8 +63,8 @@ def append(route)
  end
 
  def associate_routes(pattern, **options)
- regexp = Regexp.new("(?<_#{@neutral_map.length}>)#{pattern.to_regexp}")
- @neutral_map << Any.new(pattern, regexp, @neutral_map.length, **options)
+ @neutral_regexes << Regexp.new("(?<_#{@neutral_map.length}>)#{pattern.to_regexp}")
+ @neutral_map << Any.new(pattern, @neutral_map.length, **options)
  end
 
  def call(env)

lib/grape/router/route.rb

@@ -12,7 +12,7 @@ class Route
  SOURCE_LOCATION_REGEXP = /^(.*?):(\d+?)(?::in `.+?')?$/.freeze
  FIXED_NAMED_CAPTURES = %w[format version].freeze
 
- attr_accessor :pattern, :translator, :app, :index, :regexp, :options
+ attr_accessor :pattern, :translator, :app, :index, :options
 
  alias attributes translator