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Diffstat (limited to 'actionpack/lib/action_controller/routing/optimisations.rb')
| -rw-r--r-- | actionpack/lib/action_controller/routing/optimisations.rb | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/actionpack/lib/action_controller/routing/optimisations.rb b/actionpack/lib/action_controller/routing/optimisations.rb deleted file mode 100644 index 714cf97861..0000000000 --- a/actionpack/lib/action_controller/routing/optimisations.rb +++ /dev/null @@ -1,130 +0,0 @@ -module ActionController - module Routing - # Much of the slow performance from routes comes from the - # complexity of expiry, <tt>:requirements</tt> matching, defaults providing - # and figuring out which url pattern to use. With named routes - # we can avoid the expense of finding the right route. So if - # they've provided the right number of arguments, and have no - # <tt>:requirements</tt>, we can just build up a string and return it. - # - # To support building optimisations for other common cases, the - # generation code is separated into several classes - module Optimisation - def generate_optimisation_block(route, kind) - return "" unless route.optimise? - OPTIMISERS.inject("") do |memo, klazz| - memo << klazz.new(route, kind).source_code - memo - end - end - - class Optimiser - attr_reader :route, :kind - GLOBAL_GUARD_CONDITIONS = [ - "(!defined?(default_url_options) || default_url_options.blank?)", - "(!defined?(controller.default_url_options) || controller.default_url_options.blank?)", - "defined?(request)", - "request" - ] - - def initialize(route, kind) - @route = route - @kind = kind - end - - def guard_conditions - ["false"] - end - - def generation_code - 'nil' - end - - def source_code - if applicable? - guard_condition = (GLOBAL_GUARD_CONDITIONS + guard_conditions).join(" && ") - "return #{generation_code} if #{guard_condition}\n" - else - "\n" - end - end - - # Temporarily disabled <tt>:url</tt> optimisation pending proper solution to - # Issues around request.host etc. - def applicable? - true - end - end - - # Given a route - # - # map.person '/people/:id' - # - # If the user calls <tt>person_url(@person)</tt>, we can simply - # return a string like "/people/#{@person.to_param}" - # rather than triggering the expensive logic in +url_for+. - class PositionalArguments < Optimiser - def guard_conditions - number_of_arguments = route.required_segment_keys.size - # if they're using foo_url(:id=>2) it's one - # argument, but we don't want to generate /foos/id2 - if number_of_arguments == 1 - ["args.size == 1", "!args.first.is_a?(Hash)"] - else - ["args.size == #{number_of_arguments}"] - end - end - - def generation_code - elements = [] - idx = 0 - - if kind == :url - elements << '#{request.protocol}' - elements << '#{request.host_with_port}' - end - - elements << '#{ActionController::Base.relative_url_root if ActionController::Base.relative_url_root}' - - # The last entry in <tt>route.segments</tt> appears to *always* be a - # 'divider segment' for '/' but we have assertions to ensure that - # we don't include the trailing slashes, so skip them. - (route.segments.size == 1 ? route.segments : route.segments[0..-2]).each do |segment| - if segment.is_a?(DynamicSegment) - elements << segment.interpolation_chunk("args[#{idx}].to_param") - idx += 1 - else - elements << segment.interpolation_chunk - end - end - %("#{elements * ''}") - end - end - - # This case is mostly the same as the positional arguments case - # above, but it supports additional query parameters as the last - # argument - class PositionalArgumentsWithAdditionalParams < PositionalArguments - def guard_conditions - ["args.size == #{route.segment_keys.size + 1}"] + - UrlRewriter::RESERVED_OPTIONS.collect{ |key| "!args.last.has_key?(:#{key})" } - end - - # This case uses almost the same code as positional arguments, - # but add a question mark and args.last.to_query on the end, - # unless the last arg is empty - def generation_code - super.insert(-2, '#{\'?\' + args.last.to_query unless args.last.empty?}') - end - - # To avoid generating "http://localhost/?host=foo.example.com" we - # can't use this optimisation on routes without any segments - def applicable? - super && route.segment_keys.size > 0 - end - end - - OPTIMISERS = [PositionalArguments, PositionalArgumentsWithAdditionalParams] - end - end -end |