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Contents
# coding: utf-8
require 'i18n/tasks/data/tree/traversal'
module I18n::Tasks::Data::Tree
# A list of nodes
class Nodes
include Enumerable
include Traversal
attr_reader :list
def initialize(opts = {})
@list = opts[:nodes] ? opts[:nodes].to_a.clone : []
end
delegate :each, :present?, :empty?, :blank?, :size, :to_a, to: :@list
def to_nodes
self
end
def attributes
{nodes: @list}
end
def derive(new_attr = {})
attr = attributes.except(:nodes, :parent).merge(new_attr)
node_attr = new_attr.slice(:parent)
attr[:nodes] ||= @list.map { |node| node.derive(node_attr) }
self.class.new(attr)
end
def to_hash(sort = false)
(@hash ||= {})[sort] ||= begin
if sort
self.sort { |a, b| a.key <=> b.key }
else
self
end.map { |node| node.to_hash(sort) }.reduce({}, :deep_merge!)
end
end
delegate :to_json, to: :to_hash
delegate :to_yaml, to: :to_hash
def inspect
if present?
map(&:inspect) * "\n"
else
Term::ANSIColor.dark '{∅}'
end
end
# methods below change state
def remove!(node)
@list.delete(node) or raise "#{node.full_key} not found in #{self.inspect}"
dirty!
self
end
def append!(other)
@list += other.to_a
dirty!
self
end
def append(other)
derive.append!(other)
end
alias << append
def merge!(nodes)
@list += nodes.to_a
dirty!
self
end
alias + merge!
def children(&block)
return to_enum(:children) { map { |c| c.children.size }.reduce(:+) } unless block
each do |node|
node.children.each(&block) if node.children?
end
end
alias children? any?
protected
def dirty!
@hash = nil
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems