Class: Transpec::AST::Node

Inherits:
Parser::AST::Node
  • Object
show all
Defined in:
lib/transpec/ast/node.rb

Constant Summary collapse

TYPES = 
%w(
  true false nil
  int float
  str dstr
  sym dsym
  xstr
  regexp regopt
  array splat
  hash pair kwsplat
  irange erange
  self
  lvar ivar cvar gvar
  nth_ref back_ref
  const cbase
  defined?
  lvasgn ivasgn cvasgn gvasgn
  casgn
  masgn mlhs
  op_asgn or_asgn and_asgn
  module class sclass
  def defs undef
  alias
  args
  arg optarg restarg blockarg shadowarg kwarg kwoptarg kwrestarg
  send
  super zsuper
  yield
  block block_pass
  and or not
  if
  case when
  while until while_post until_post for
  break next redo return
  begin
  rescue resbody ensure retry
  preexe postexe
  iflipflop eflipflop
  match_current_line match_with_lvasgn
).map(&:to_sym).freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(type, children = [], properties = {}) ⇒ Node

Returns a new instance of Node.



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# File 'lib/transpec/ast/node.rb', line 50

def initialize(type, children = [], properties = {})
  @metadata = {}
  @mutable_attributes = {}

  # ::AST::Node#initialize freezes itself.
  super

  each_child_node do |child_node|
    child_node.parent_node = self
  end
end

Instance Attribute Details

#metadata ⇒ Object (readonly)

Returns the value of attribute metadata.



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# File 'lib/transpec/ast/node.rb', line 48

def metadata
  @metadata
end

Instance Method Details

#ancestor_nodes ⇒ Object 



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# File 'lib/transpec/ast/node.rb', line 90

def ancestor_nodes
  each_ancestor_node.to_a
end

#child_nodes ⇒ Object 



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# File 'lib/transpec/ast/node.rb', line 105

def child_nodes
  each_child_node.to_a
end

#descendent_nodes ⇒ Object 



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# File 'lib/transpec/ast/node.rb', line 118

def descendent_nodes
  each_descendent_node.to_a
end

#each_ancestor_node(&block) ⇒ Object 



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# File 'lib/transpec/ast/node.rb', line 79

def each_ancestor_node(&block)
  return to_enum(__method__) unless block_given?

  if parent_node
    yield parent_node
    parent_node.each_ancestor_node(&block)
  end

  self
end

#each_child_node ⇒ Object 



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# File 'lib/transpec/ast/node.rb', line 94

def each_child_node
  return to_enum(__method__) unless block_given?

  children.each do |child|
    next unless child.is_a?(self.class)
    yield child
  end

  self
end

#each_descendent_node(&block) ⇒ Object 



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# File 'lib/transpec/ast/node.rb', line 109

def each_descendent_node(&block)
  return to_enum(__method__) unless block_given?

  each_child_node do |child_node|
    yield child_node
    child_node.each_descendent_node(&block)
  end
end

#each_node {|_self| ... } ⇒ Object

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/transpec/ast/node.rb', line 122

def each_node(&block)
  return to_enum(__method__) unless block_given?
  yield self
  each_descendent_node(&block)
end

#parent_node ⇒ Object 



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# File 'lib/transpec/ast/node.rb', line 69

def parent_node
  @mutable_attributes[:parent_node]
end