class RuboCop::AST::NodePattern


- With no block and no captures: #match returns ‘true`.
- With no block, but multiple captures: captures are returned as an array.
- With no block, but one capture: the capture is returned.
value of the block through.
- With block: #match yields the captures (if any) and passes the return
from a matching AST.)
whether the pattern contained any “captures” (values which are extracted
return value depends on whether a block was provided to `#match`, and
If the match fails, `nil` will be returned. If the match succeeds, the
macros in `NodePattern::Macros` to define your own pattern-matching method.
pass an AST node to `NodePattern#match`. Alternatively, use one of the class
Initialize a new `NodePattern` with `NodePattern.new(pattern_string)`, then
Detailed syntax: /docs/modules/ROOT/pages/node_pattern.adoc
This class performs a pattern-matching operation on an AST node.

def self.descend(element, &block)


Yields its argument and any descendants, depth-first. 
def self.descend(element, &block)
  return to_enum(__method__, element) unless block
  yield element
  if element.is_a?(::RuboCop::AST::Node)
    element.children.each do |child|
      descend(child, &block)
    end
  end
  nil
end

def ==(other) 

def ==(other)
  other.is_a?(NodePattern) && other.ast == ast
end

def as_json(_options = nil) # :nodoc:

:nodoc: 
def as_json(_options = nil) # :nodoc:
  pattern
end

def encode_with(coder) # :nodoc:

:nodoc: 
def encode_with(coder) # :nodoc:
  coder['pattern'] = pattern
end

def freeze 

def freeze
  @match_code.freeze
  @compiler.freeze
  super
end

def init_with(coder) # :nodoc:

:nodoc: 
def init_with(coder) # :nodoc:
  initialize(coder['pattern'])
end

def initialize(str, compiler: Compiler.new) 

def initialize(str, compiler: Compiler.new)
  @pattern = str
  @ast = compiler.parser.parse(str)
  @compiler = compiler
  @match_code = @compiler.compile_as_node_pattern(@ast, var: VAR)
  @cache = {}
end

def marshal_dump # :nodoc:

:nodoc: 
def marshal_dump # :nodoc:
  pattern
end

def marshal_load(pattern) # :nodoc:

:nodoc: 
def marshal_load(pattern) # :nodoc:
  initialize pattern
end

def match(*args, **rest, &block) 

def match(*args, **rest, &block)
  @cache[:lambda] ||= as_lambda
  @cache[:lambda].call(*args, block: block, **rest)
end

def to_s 

def to_s
  "#<#{self.class} #{pattern}>"
end