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|
# frozen_string_literal: true
require "action_dispatch/journey/router/utils"
require "action_dispatch/journey/routes"
require "action_dispatch/journey/formatter"
before = $-w
$-w = false
require "action_dispatch/journey/parser"
$-w = before
require "action_dispatch/journey/route"
require "action_dispatch/journey/path/pattern"
module ActionDispatch
module Journey # :nodoc:
class Router # :nodoc:
class RoutingError < ::StandardError # :nodoc:
end
attr_accessor :routes
def initialize(routes)
@routes = routes
end
def eager_load!
# Eagerly trigger the simulator's initialization so
# it doesn't happen during a request cycle.
simulator
nil
end
def serve(req)
find_routes(req).each do |match, parameters, route|
set_params = req.path_parameters
path_info = req.path_info
script_name = req.script_name
unless route.path.anchored
req.script_name = (script_name.to_s + match.to_s).chomp("/")
req.path_info = match.post_match
req.path_info = "/" + req.path_info unless req.path_info.start_with? "/"
end
req.path_parameters = set_params.merge parameters
status, headers, body = route.app.serve(req)
if "pass" == headers["X-Cascade"]
req.script_name = script_name
req.path_info = path_info
req.path_parameters = set_params
next
end
return [status, headers, body]
end
return [404, { "X-Cascade" => "pass" }, ["Not Found"]]
end
def recognize(rails_req)
find_routes(rails_req).each do |match, parameters, route|
unless route.path.anchored
rails_req.script_name = match.to_s
rails_req.path_info = match.post_match.sub(/^([^\/])/, '/\1')
end
yield(route, parameters)
end
end
def visualizer
tt = GTG::Builder.new(ast).transition_table
groups = partitioned_routes.first.map(&:ast).group_by(&:to_s)
asts = groups.values.map(&:first)
tt.visualizer(asts)
end
private
def partitioned_routes
routes.partition { |r|
r.path.anchored && r.ast.grep(Nodes::Symbol).all? { |n| n.default_regexp? }
}
end
def ast
routes.ast
end
def simulator
routes.simulator
end
def custom_routes
routes.custom_routes
end
def filter_routes(path)
return [] unless ast
simulator.memos(path) { [] }
end
def find_routes(req)
routes = filter_routes(req.path_info).concat custom_routes.find_all { |r|
r.path.match(req.path_info)
}
routes =
if req.head?
match_head_routes(routes, req)
else
match_routes(routes, req)
end
routes.sort_by!(&:precedence)
routes.map! { |r|
match_data = r.path.match(req.path_info)
path_parameters = r.defaults.dup
match_data.names.zip(match_data.captures) { |name, val|
path_parameters[name.to_sym] = Utils.unescape_uri(val) if val
}
[match_data, path_parameters, r]
}
end
def match_head_routes(routes, req)
verb_specific_routes = routes.select(&:requires_matching_verb?)
head_routes = match_routes(verb_specific_routes, req)
if head_routes.empty?
begin
req.request_method = "GET"
match_routes(routes, req)
ensure
req.request_method = "HEAD"
end
else
head_routes
end
end
def match_routes(routes, req)
routes.select { |r| r.matches?(req) }
end
end
end
end
|
