Class: Usher::Grapher
- Inherits:
-
Object
- Object
- Usher::Grapher
- Defined in:
- lib/usher/grapher.rb
Instance Attribute Summary collapse
-
#cache ⇒ Object
readonly
Returns the value of attribute cache.
-
#key_count ⇒ Object
readonly
Returns the value of attribute key_count.
-
#orders ⇒ Object
readonly
Returns the value of attribute orders.
-
#router ⇒ Object
readonly
Returns the value of attribute router.
-
#routes ⇒ Object
readonly
Returns the value of attribute routes.
Instance Method Summary collapse
- #add_route(route) ⇒ Object
- #find_matching_path(params) ⇒ Object
-
#initialize(router) ⇒ Grapher
constructor
A new instance of Grapher.
- #process_routes ⇒ Object
- #reset! ⇒ Object
- #significant_keys ⇒ Object
Constructor Details
#initialize(router) ⇒ Grapher
Returns a new instance of Grapher.
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# File 'lib/usher/grapher.rb', line 6 def initialize(router) @router = router reset! end |
Instance Attribute Details
#cache ⇒ Object (readonly)
Returns the value of attribute cache.
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# File 'lib/usher/grapher.rb', line 4 def cache @cache end |
#key_count ⇒ Object (readonly)
Returns the value of attribute key_count.
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# File 'lib/usher/grapher.rb', line 4 def key_count @key_count end |
#orders ⇒ Object (readonly)
Returns the value of attribute orders.
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# File 'lib/usher/grapher.rb', line 4 def orders @orders end |
#router ⇒ Object (readonly)
Returns the value of attribute router.
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# File 'lib/usher/grapher.rb', line 4 def router @router end |
#routes ⇒ Object (readonly)
Returns the value of attribute routes.
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# File 'lib/usher/grapher.rb', line 4 def routes @routes end |
Instance Method Details
#add_route(route) ⇒ Object
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# File 'lib/usher/grapher.rb', line 19 def add_route(route) routes << route end |
#find_matching_path(params) ⇒ Object
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# File 'lib/usher/grapher.rb', line 65 def find_matching_path(params) unless params.empty? process_routes set = params.keys & significant_keys if cached = cache[set] return cached end set.size.downto(1) do |o| set.each do |k| orders[o][k].each do |r| if r.can_generate_from_keys?(set) cache[set] = r return r elsif router.consider_destination_keys? && r.can_generate_from_params?(params) return r end end end end end nil end |
#process_routes ⇒ Object
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# File 'lib/usher/grapher.rb', line 23 def process_routes return if @processed routes.each do |route| route.paths.each do |path| if path.dynamic? path.dynamic_keys.each do |k| orders[path.dynamic_keys.size][k] << path key_count[k] += 1 end dynamic_parts_with_defaults = path.dynamic_parts.select{|part| part.default_value }.map{|dp| dp.name} dynamic_parts_without_defaults = path.dynamic_parts.select{|part| !part.default_value }.map{|dp| dp.name} (1...(2 ** (dynamic_parts_with_defaults.size))).each do |i| current_set = dynamic_parts_without_defaults.dup dynamic_parts_with_defaults.each_with_index do |dp, index| current_set << dp unless (index & i) == 0 end current_set.each do |k| orders[current_set.size][k] << path key_count[k] += 1 end end end if router.consider_destination_keys? path.route.destination_keys.each do |k| orders[path.route.destination_keys.size][k] << path key_count[k] += 1 end end end end @processed = true end |
#reset! ⇒ Object
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# File 'lib/usher/grapher.rb', line 11 def reset! @significant_keys = nil @orders = Hash.new{|h,k| h[k] = Hash.new{|h2, k2| h2[k2] = []}} @key_count = Hash.new(0) @cache = {} @routes = [] end |
#significant_keys ⇒ Object
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# File 'lib/usher/grapher.rb', line 61 def significant_keys @significant_keys ||= key_count.keys.uniq end |