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 12

def initialize(parent, value)
  @parent = parent
  @value = value
  @lookup = Hash.new
  @greedy_lookup = Hash.new
  @exclusive_type = nil
end

Instance Attribute Details

#exclusive_type ⇒ Object

Returns the value of attribute exclusive_type.


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# File 'lib/usher/node.rb', line 10

def exclusive_type
  @exclusive_type
end

#greedy_lookup ⇒ Object (readonly)

Returns the value of attribute greedy_lookup.


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# File 'lib/usher/node.rb', line 9

def greedy_lookup
  @greedy_lookup
end

#lookup ⇒ Object (readonly)

Returns the value of attribute lookup.


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# File 'lib/usher/node.rb', line 9

def lookup
  @lookup
end

#parent ⇒ Object

Returns the value of attribute parent.


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# File 'lib/usher/node.rb', line 10

def parent
  @parent
end

#request_methods ⇒ Object

Returns the value of attribute request_methods.


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# File 'lib/usher/node.rb', line 10

def request_methods
  @request_methods
end

#terminates ⇒ Object

Returns the value of attribute terminates.


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# File 'lib/usher/node.rb', line 10

def terminates
  @terminates
end

#value ⇒ Object

Returns the value of attribute value.


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# File 'lib/usher/node.rb', line 10

def value
  @value
end

Class Method Details

.root(route_set, request_methods) ⇒ Object 


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# File 'lib/usher/node.rb', line 36

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

Instance Method Details

#add(route) ⇒ Object 


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# File 'lib/usher/node.rb', line 56

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 62

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 28

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

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


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# File 'lib/usher/node.rb', line 80

def find(usher, request, original_path, path, params = [], position = 0)
  if exclusive_type
    [lookup[request.send(exclusive_type)], lookup[nil]].each do |n|
      if n && (ret = n.find(usher, request, original_path, path.dup, params.dup, position))
        return ret
      end
    end
    nil
  elsif terminates? && (path.size.zero? || terminates.route.partial_match?)
    if terminates.route.partial_match?
      Response.new(terminates, params, original_path[position, original_path.size], original_path[0, position])
    else
      Response.new(terminates, params, nil, original_path)
    end
    
  elsif !path.size.zero? && (greedy? && (match_with_result_output = greedy_lookup.match_with_result(whole_path = original_path[position, original_path.size])))
next_path, matched_part = match_with_result_output
    position += matched_part.size
    params << [next_path.value.name, whole_path.slice!(0, matched_part.size)]
    next_path.find(usher, request, original_path, whole_path.size.zero? ? whole_path : usher.splitter.url_split(whole_path), params, position)
  elsif !path.size.zero? && (next_part = lookup[part = path.shift] || lookup[nil])
    position += part.size
    case next_part.value
    when Route::Variable::Glob
      params << [next_part.value.name, []] unless params.last && params.last.first == next_part.value.name
      loop do
        if (next_part.value.look_ahead === part || (!usher.delimiter_chars.include?(part[0]) && next_part.value.regex_matcher && !next_part.value.regex_matcher.match(part)))
          path.unshift(part)
          position -= part.size
          if usher.delimiter_chars.include?(next_part.parent.value[0])
            path.unshift(next_part.parent.value)
            position -= next_part.parent.value.size
          end
          break
        elsif !usher.delimiter_chars.include?(part[0])
          next_part.value.valid!(part)
          params.last.last << part
        end
        if path.size.zero?
          break
        else
          part = path.shift
        end
      end
    when Route::Variable::Single
      var = next_part.value
      var.valid!(part)
      params << [var.name, part]
      until (var.look_ahead === path.first) || path.empty?
        next_path_part = path.shift
        position += next_path_part.size
        params.last.last << next_path_part
      end
    end
    next_part.find(usher, request, original_path, path, params, position)
  else
    nil
  end
end

#greedy? ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/usher/node.rb', line 32

def greedy?
  !@greedy_lookup.empty?
end

#pp ⇒ Object 


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# File 'lib/usher/node.rb', line 46

def pp
  $stdout << " " * depth
  $stdout << "#{depth}: #{value.inspect} #{!!terminates?}\n"
  @lookup.each do |k,v|
    $stdout << " " * (depth + 1)
    $stdout << "#{k} ==> \n"
    v.pp
  end
end

#terminates? ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/usher/node.rb', line 42

def terminates?
  @terminates
end

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


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# File 'lib/usher/node.rb', line 68

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

#upgrade_greedy_lookup ⇒ Object 


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

def upgrade_greedy_lookup
  @greedy_lookup = FuzzyHash.new(@greedy_lookup)
end

#upgrade_lookup ⇒ Object 


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# File 'lib/usher/node.rb', line 20

def upgrade_lookup
  @lookup = FuzzyHash.new(@lookup)
end