Class: Rubocop::Cop::VariableInspector::Scope::ASTScanner

Inherits:
Object
  • Object
show all
Defined in:
lib/rubocop/cop/variable_inspector/scope.rb

Overview

This class provides a ways to scan AST with tracking ancestor nodes.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ASTScanner

Returns a new instance of ASTScanner.



51
52
53
 
# File 'lib/rubocop/cop/variable_inspector/scope.rb', line 51

def initialize
  @ancestor_nodes = []
end

Class Method Details

.scan(node, &block) ⇒ Object 



47
48
49
 
# File 'lib/rubocop/cop/variable_inspector/scope.rb', line 47

def self.scan(node, &block)
  new.scan(node, &block)
end

Instance Method Details

#scan(node, &block) ⇒ Object 



55
56
57
58
59
60
61
62
63
64
65
 
# File 'lib/rubocop/cop/variable_inspector/scope.rb', line 55

def scan(node, &block)
  @ancestor_nodes.push(node)

  node.children.each do |child|
    next unless child.is_a?(Parser::AST::Node)
    yield child, @ancestor_nodes
    scan(child, &block)
  end

  @ancestor_nodes.pop
end