Class: Jsus::Util::Tree::Node

Inherits:

Object

• Object
• Jsus::Util::Tree::Node

show all

Defined in:

lib/jsus/util/tree.rb

Overview

Instance Attribute Summary (collapse)

• - (Object) full_path

  Contains full path to the node, such as '/hello/world'.

• - (Object) name readonly

  Contains node basename, such as 'world' for '/hello/world'.

• - (Object) parent

  Contains reference to parent node, nil for root node.

• - (Object) path_components

  Contains array with path components.

• - (Object) value

  Contains assigned value.

Instance Method Summary (collapse)

• - (Array) children

  Node's direct descendants.

• - (Jsus::Util::Tree::Node) create_child(name, value = nil)

  Creates a child with given name and value.

• - (Jsus::Util::Tree::Node) find_child(name)

  Direct node child with given basename.

• - (Array) find_children_matching(pathspec)

  Finds children matching the given pathspec Pathspec format:.

• - (Object) find_or_create_child(name, value = nil)

  Finds a child with given name or creates a child with given name and value.

• - (Boolean) has_children?

  Whether this node has children.

• - (Node) initialize(full_path, value = nil) constructor

  Initializes full path and value for the node.

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# File 'lib/jsus/util/tree.rb', line 63

def initialize(full_path, value = nil)
  self.full_path = full_path
  self.value = value
end

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# File 'lib/jsus/util/tree.rb', line 69

def full_path
  @full_path
end

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# File 'lib/jsus/util/tree.rb', line 71

def name
  @name
end

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# File 'lib/jsus/util/tree.rb', line 55

def parent
  @parent
end

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# File 'lib/jsus/util/tree.rb', line 57

def path_components
  @path_components
end

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# File 'lib/jsus/util/tree.rb', line 53

def value
  @value
end

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# File 'lib/jsus/util/tree.rb', line 83

def children
  @children ||= []
end

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# File 'lib/jsus/util/tree.rb', line 99

def create_child(name, value = nil)
  full_path = Tree.path_from_components(path_components + [name])
  node = Node.new(full_path, value)
  children << node
  node.parent = self
  node
end

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# File 'lib/jsus/util/tree.rb', line 90

def find_child(name)
  children.detect {|child| child.name == name }
end

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# File 'lib/jsus/util/tree.rb', line 127

def find_children_matching(pathspec)
  case pathspec
    when "**"
      [self] + children.select {|child| child.has_children? }
    when /\*/
      regexp = Regexp.new("^" + Regexp.escape(pathspec).gsub("\\*", ".*") + "$")
      children.select {|child| !child.has_children? && child.name =~ regexp }
    else
      [find_child(pathspec)].compact
  end
end

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# File 'lib/jsus/util/tree.rb', line 113

def find_or_create_child(name, value = nil)
  find_child(name) || create_child(name, value)
end

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# File 'lib/jsus/util/tree.rb', line 141

def has_children?
  !children.empty?
end