Class: Whoosh::Router

Inherits:
Object
  • Object
show all
Defined in:
lib/whoosh/router.rb

Defined Under Namespace

Classes: TrieNode

Constant Summary collapse

EMPTY_PARAMS = 
{}.freeze

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Router

Returns a new instance of Router.



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# File 'lib/whoosh/router.rb', line 18

def initialize
  @root = TrieNode.new
  @routes = []
  @frozen = false
  @static_cache = nil
end

Instance Method Details

#add(method, path, handler, **metadata) ⇒ Object 



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# File 'lib/whoosh/router.rb', line 25

def add(method, path, handler, **metadata)
  raise "Router is frozen — cannot add routes after boot" if @frozen

  node = @root
  segments = split_path(path)

  segments.each do |segment|
    if segment.start_with?(":")
      child = node.children[:_param] ||= TrieNode.new
      child.is_param = true
      child.param_name = segment[1..].to_sym
      node = child
    else
      node = node.children[segment] ||= TrieNode.new
    end
  end

  node.handlers[method] = { handler: handler, metadata: metadata }
  @routes << { method: method, path: path, handler: handler, metadata: metadata }
end

#freeze! ⇒ Object 



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# File 'lib/whoosh/router.rb', line 86

def freeze!
  @frozen = true
  build_static_cache
end

#match(method, path) ⇒ Object 



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# File 'lib/whoosh/router.rb', line 46

def match(method, path)
  # Fast path: static route cache (O(1))
  if @static_cache
    cached = @static_cache["#{method}:#{path}"]
    if cached
      return { handler: cached[:handler], params: EMPTY_PARAMS, metadata: cached[:metadata] }
    end
  end

  # Slow path: trie walk for param routes
  # Trailing slash (e.g. "/health/") is treated as a distinct path from "/health"
  return nil if path.end_with?("/") && path != "/"

  node = @root
  params = {}
  segments = split_path(path)

  segments.each do |segment|
    if node.children[segment]
      node = node.children[segment]
    elsif node.children[:_param]
      node = node.children[:_param]
      params[node.param_name] = segment
    else
      return nil
    end
  end

  entry = node.handlers[method]
  return nil unless entry

  { handler: entry[:handler], params: params.empty? ? EMPTY_PARAMS : params, metadata: entry[:metadata] }
end

#routes ⇒ Object 



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# File 'lib/whoosh/router.rb', line 80

def routes
  @routes.map do |route|
    { method: route[:method], path: route[:path], metadata: route[:metadata] }
  end
end