Class: Synvert::Rewriter::Scope

Inherits:
Object
  • Object
show all
Defined in:
lib/synvert/rewriter/scope.rb

Overview

Scope finds the child nodes which match rules.

Instance Method Summary collapse

Constructor Details

#initialize(instance, rules, &block) ⇒ Scope

Initialize a scope

Parameters:



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# File 'lib/synvert/rewriter/scope.rb', line 11

def initialize(instance, rules, &block)
  @instance = instance
  @rules = rules
  @block = block
end

Instance Method Details

#process ⇒ Object

Find the matching nodes. It checks the current node and iterates all child nodes, then run the block code for each matching node.



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# File 'lib/synvert/rewriter/scope.rb', line 19

def process
  current_node = @instance.current_node
  return unless current_node
  process_with_node current_node do
    matching_nodes = []
    matching_nodes << current_node if current_node.match? @instance, @rules
    current_node.recursive_children do |child_node|
      matching_nodes << child_node if child_node.match? @instance, @rules
    end
    matching_nodes.each do |matching_node|
      process_with_node matching_node do
        @instance.instance_eval &@block
      end
    end
  end
end