Class: Stupidedi::Zipper::Hole

Inherits:
AbstractPath show all
Defined in:
lib/stupidedi/zipper/path.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(left, parent, right) ⇒ Hole


91
92
93
94
# File 'lib/stupidedi/zipper/path.rb', line 91

def initialize(left, parent, right)
  @left, @parent, @right =
    left, parent, right
end

Instance Attribute Details

#leftArray<#leaf?, #children, #copy> (readonly)

Contains the node's rightward siblings, sorted nearest to furthest


83
84
85
# File 'lib/stupidedi/zipper/path.rb', line 83

def left
  @left
end

#parentAbstractPath (readonly)


86
87
88
# File 'lib/stupidedi/zipper/path.rb', line 86

def parent
  @parent
end

#rightArray<#leaf?, #children, #copy> (readonly)

Contains the node's leftward siblings, sorted nearest to furthest


89
90
91
# File 'lib/stupidedi/zipper/path.rb', line 89

def right
  @right
end

Instance Method Details

#==(other) ⇒ Boolean


121
122
123
124
# File 'lib/stupidedi/zipper/path.rb', line 121

def ==(other)
  depth    == other.depth and
  position == other.position
end

#depthInteger

Distance from the root node


107
108
109
# File 'lib/stupidedi/zipper/path.rb', line 107

def depth
  1 + @parent.depth
end

#first?Boolean


102
103
104
# File 'lib/stupidedi/zipper/path.rb', line 102

def first?
  @left.empty?
end

#inspectString


116
117
118
# File 'lib/stupidedi/zipper/path.rb', line 116

def inspect
  "#{@parent.inspect}/#{@left.length}"
end

#last?Boolean


97
98
99
# File 'lib/stupidedi/zipper/path.rb', line 97

def last?
  @right.empty?
end

#position


111
112
113
# File 'lib/stupidedi/zipper/path.rb', line 111

def position
  @left.length
end