Class: Usher::Node

Inherits:
Object
  • Object
show all
Defined in:
lib/usher/node.rb

Defined Under Namespace

Classes: Response

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parent, value) ⇒ Node

Returns a new instance of Node.



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# File 'lib/usher/node.rb', line 24

def initialize(parent, value)
  @parent = parent
  @value = value
  @request = nil
  @normal = nil
  @greedy = nil
  @request_method_type = nil
end

Instance Attribute Details

#greedy ⇒ Object (readonly)

Returns the value of attribute greedy.



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# File 'lib/usher/node.rb', line 21

def greedy
  @greedy
end

#normal ⇒ Object (readonly)

Returns the value of attribute normal.



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# File 'lib/usher/node.rb', line 21

def normal
  @normal
end

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/usher/node.rb', line 22

def parent
  @parent
end

#request ⇒ Object (readonly)

Returns the value of attribute request.



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# File 'lib/usher/node.rb', line 21

def request
  @request
end

#request_method_type ⇒ Object

Returns the value of attribute request_method_type.



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# File 'lib/usher/node.rb', line 22

def request_method_type
  @request_method_type
end

#request_methods ⇒ Object

Returns the value of attribute request_methods.



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# File 'lib/usher/node.rb', line 22

def request_methods
  @request_methods
end

#terminates ⇒ Object

Returns the value of attribute terminates.



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# File 'lib/usher/node.rb', line 22

def terminates
  @terminates
end

#value ⇒ Object

Returns the value of attribute value.



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# File 'lib/usher/node.rb', line 22

def value
  @value
end

Class Method Details

.root(route_set, request_methods) ⇒ Object 



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# File 'lib/usher/node.rb', line 65

def self.root(route_set, request_methods)
  root = self.new(route_set, nil)
  root.request_methods = request_methods
  root
end

Instance Method Details

#activate_greedy! ⇒ Object 



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# File 'lib/usher/node.rb', line 37

def activate_greedy!
  @greedy ||= Hash.new
end

#activate_normal! ⇒ Object 



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# File 'lib/usher/node.rb', line 33

def activate_normal!
  @normal ||= Hash.new
end

#activate_request! ⇒ Object 



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# File 'lib/usher/node.rb', line 41

def activate_request!
  @request ||= Hash.new
end

#add(route) ⇒ Object 



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# File 'lib/usher/node.rb', line 95

def add(route)
  route.paths.each do |path|
    set_path_with_destination(path)
  end
end

#delete(route) ⇒ Object 



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# File 'lib/usher/node.rb', line 101

def delete(route)
  route.paths.each do |path|
    set_path_with_destination(path, nil)
  end
end

#depth ⇒ Object 



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# File 'lib/usher/node.rb', line 57

def depth
  @depth ||= @parent.is_a?(Node) ? @parent.depth + 1 : 0
end

#find(usher, request_object, original_path, path, params = [], position = 0) ⇒ Object 



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# File 'lib/usher/node.rb', line 122

def find(usher, request_object, original_path, path, params = [], position = 0)
  if terminates? && (path.empty? || terminates.route.partial_match? || (usher.ignore_trailing_delimiters? && path.all?{|p| usher.delimiters.include?(p)}))
    terminates.route.partial_match? ?
      Response.new(terminates, params, original_path[position, original_path.size], original_path[0, position]) :
      Response.new(terminates, params, nil, original_path)
  elsif !path.empty? and greedy and match_with_result_output = greedy.match_with_result(whole_path = original_path[position, original_path.size])
next_path, matched_part = match_with_result_output
    position += matched_part.size
    whole_path.slice!(0, matched_part.size)
    params << [next_path.value.name, matched_part] if next_path.value.is_a?(Route::Variable)
    next_path.find(usher, request_object, original_path, whole_path.empty? ? whole_path : usher.splitter.url_split(whole_path), params, position)
  elsif !path.empty? and normal and next_part = normal[path.first] || normal[nil]
    part = path.shift
    position += part.size
    case next_part.value
    when String
      # do nothing
    when Route::Variable::Single
      # get the variable
      var = next_part.value
      # do a validity check
      var.valid!(part)
      # because its a variable, we need to add it to the params array
      params << [var.name, part]
      until path.empty? || (var.look_ahead === path.first)                # variables have a look ahead notion, 
        next_path_part = path.shift                                       # and until they are satified,
        position += next_path_part.size                                   # keep appending to the value in params
        params.last.last << next_path_part
      end if var.look_ahead && usher.delimiters.size > 1
    when Route::Variable::Glob
      params << [next_part.value.name, []]
      while true
        if (next_part.value.look_ahead === part || (!usher.delimiters.unescaped.include?(part) && next_part.value.regex_matcher && !next_part.value.regex_matcher.match(part)))
          path.unshift(part)
          position -= part.size
          if usher.delimiters.unescaped.include?(next_part.parent.value)
            path.unshift(next_part.parent.value)
            position -= next_part.parent.value.size
          end
          break
        elsif !usher.delimiters.unescaped.include?(part)
          next_part.value.valid!(part)
          params.last.last << part
        end
        if path.empty?
          break
        else
          part = path.shift
        end
      end
    end
    next_part.find(usher, request_object, original_path, path, params, position)
  elsif request_method_type
    return_value = if (specific_node = request[request_object.send(request_method_type)] and ret = specific_node.find(usher, request_object, original_path, path.dup, params.dup, position))
      usher.priority_lookups? ? [ret] : ret
    end
    
    if usher.priority_lookups? || return_value.nil? and general_node = request[nil] and ret = general_node.find(usher, request_object, original_path, path.dup, params.dup, position)
      return_value = usher.priority_lookups? && return_value ? [return_value, ret] : ret
    end
    
    unless usher.priority_lookups?
      return_value
    else
      return_value = Array(return_value).flatten.compact
      return_value.sort!{|r1, r2| r1.path.route.priority <=> r2.path.route.priority}
      return_value.last
    end
  else
    nil
  end
end

#greedy? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/usher/node.rb', line 61

def greedy?
  @greedy
end

#pp ⇒ Object 



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# File 'lib/usher/node.rb', line 75

def pp
  $stdout << " " * depth
  $stdout << "#{terminates? ? '* ' : ''}#{depth}: #{value.inspect}\n"
  normal.each do |k,v|
    $stdout << " " * (depth + 1)
    $stdout << ". #{k.inspect} ==> \n"
    v.pp
  end if normal
  greedy.each do |k,v|
    $stdout << " " * (depth + 1)
    $stdout << "g #{k.inspect} ==> \n"
    v.pp
  end if greedy
  request.each do |k,v|
    $stdout << " " * (depth + 1)
    $stdout << "r #{k.inspect} ==> \n"
    v.pp
  end if request
end

#terminates? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/usher/node.rb', line 71

def terminates?
  @terminates && @terminates.route.recognizable?
end

#unique_routes(node = self, routes = []) ⇒ Object 



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# File 'lib/usher/node.rb', line 107

def unique_routes(node = self, routes = [])
  routes << node.terminates.route if node.terminates
  node.normal.values.each do |v|
    unique_routes(v, routes)
  end if node.normal
  node.greedy.values.each do |v|
    unique_routes(v, routes)
  end if node.greedy
  node.request.values.each do |v|
    unique_routes(v, routes)
  end if node.request
  routes.uniq!
  routes
end

#upgrade_greedy! ⇒ Object 



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# File 'lib/usher/node.rb', line 49

def upgrade_greedy!
  @greedy = FuzzyHash.new(@greedy)
end

#upgrade_normal! ⇒ Object 



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# File 'lib/usher/node.rb', line 45

def upgrade_normal!
  @normal = FuzzyHash.new(@normal)
end

#upgrade_request! ⇒ Object 



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# File 'lib/usher/node.rb', line 53

def upgrade_request!
  @request = FuzzyHash.new(@request)
end